JP2008059871A - Reactor, fuel cell system and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaction apparatus comprising a plurality of reaction parts having different appropriate reaction temperatures and capable of controlling each reaction part to an efficient and appropriate temperature, and a fuel cell system and an electronic device provided with the reaction apparatus. And
A reaction apparatus includes a reforming reaction chamber and a reformer combustion chamber that is adjacent to the reforming reaction chamber through a partition and generates heat to be supplied to the reforming reaction chamber. The reformer 4, the removal reaction chamber 35 in which a chemical reaction is performed at a lower temperature than the reforming reaction chamber 31, and the removal reaction chamber 35 are adjacent to each other via a partition wall, and heat supplied to the removal reaction chamber 35 is generated. A CO remover 5 in which the remover combustion chamber 34 is formed, and a connecting portion 6 that connects the reformer 4 and the CO remover 5 are provided. Furthermore, the reformer 4 and the CO remover 5 are arranged apart from each other, joined to the partition wall 26 of the reformer 4 to form a flow path in the reforming reaction chamber 31, and the CO remover 5 At least one of the fins 27 that is joined to the partition wall 28 and forms a flow path in the CO remover 5 is provided.
[Selection] Figure 1

Description

  The present invention relates to a reaction device, a fuel cell system including the reaction device, and an electronic device including the fuel cell system.

  As a clean power source with high energy conversion efficiency, a fuel cell that generates electric energy by an electrochemical reaction between oxygen and hydrogen is used in automobiles and portable devices. Since hydrogen is difficult to handle, it is not a supply of stored hydrogen to the fuel cell. Instead of storing alcohol or hydrocarbons and reacting the stored alcohol or hydrocarbons, the main gas is hydrogen. Is generated and supplied to the fuel cell. A reaction apparatus is used to generate a gas containing hydrogen as a main component.

  A conventional reaction apparatus is disclosed in Patent Document 1, for example. The reaction apparatus shown in Patent Document 1 includes a reformer that reforms an organic compound to obtain hydrogen. The reformer supplies a reformed gas containing reformed hydrogen and carbon monoxide to a CO converter and a CO remover that cause a reaction at a lower temperature.

JP 2005-166283 A

  In the reaction apparatus shown in Patent Document 1, since the reaction temperature of the reformer section and the CO remover (or CO converter) is different from each other, heat conduction between the reformer and the CO remover is not possible as much as possible. preferable. However, if a reformer, a CO remover, and a connecting pipe connecting these with a material having low thermal conductivity are configured, there is a problem that each reactor cannot be heated to a uniform temperature quickly. On the other hand, in order to quickly heat the reformer and the carbon monoxide remover, the inventors have developed that the reformer and the carbon monoxide remover are formed using a metal having good thermal conductivity. ing. In this case, each reactor can be quickly heated and the entire reactor can be made to have a uniform temperature, but generally the proper reaction temperature in the carbon monoxide remover is lower than the proper reaction temperature in the reformer. Since the reformer heat is excessively propagated to the carbon monoxide remover and the reformer is cooled, or the carbon monoxide remover is overheated, a particularly small reformer and carbon monoxide In the case of a remover, it has never been easy to control the proper reaction temperature.

  An object of the present invention is to provide a reaction device that includes a plurality of reaction units having different appropriate reaction temperatures, and that can control each reaction unit to an efficient and appropriate temperature, and a fuel cell system and an electronic device including the reaction device. That is.

The present invention provides a reactor,
A high temperature reaction section in which a high temperature reaction chamber is formed;
A low-temperature reaction part in which a low-temperature reaction chamber in which a chemical reaction is performed at a lower temperature than the high-temperature reaction chamber is formed;
Connecting the high temperature reaction part and the low temperature reaction part, and provided with a connection part provided in a ceramic region in which a communication path for communicating the high temperature reaction chamber and the low temperature reaction chamber is formed,
A flow path is formed in the high temperature reaction chamber and the low temperature reaction chamber,
At least one of the high temperature reaction chamber and the low temperature reaction chamber has a side wall that partitions the flow path and is formed of a member having a higher thermal conductivity than the connection portion.

  In the present invention, the ceramic region is preferably formed by laminating a plurality of ceramic layers.

  The heat generating part further heats at least one of the high temperature reaction part and the low temperature reaction part, and the heat generation part includes a partition wall provided on at least one side of the high temperature reaction part and the low temperature reaction part, and the partition wall Preferably, it is formed in combination with a substrate having a thermal conductivity lower than that of the partition wall, which is provided opposite to the partition wall.

  The side wall provided in at least one of the high temperature reaction chamber and the low temperature reaction chamber and partitioning the flow path is preferably a plurality of fins.

The high temperature reaction part preferably performs a reaction that generates hydrogen.
The low-temperature reaction part preferably performs a reaction for removing carbon monoxide.

Further, the present invention provides a fuel cell system, the reaction apparatus,
And a fuel cell that generates electric power using the reaction product generated by the reactor as a fuel.

According to the present invention, in the electronic device, the fuel cell system is provided.
The present invention is also an electronic device,
An operation unit and a display unit provided in the housing;
An operation control unit for controlling display contents of the display unit based on input information from the operation unit;
The fuel cell system is housed in the housing and supplies power to the operation unit, the display unit, and the operation control unit.

  According to the present invention, since the thermal conductivity of the connecting portion is lower than the thermal conductivity of at least one side wall of the high temperature reaction chamber and the low temperature reaction chamber, While suppressing the propagation of heat and at least one of the high temperature reaction chamber and the low temperature reaction chamber, the side wall partitioning the flow path is formed of a member having a higher thermal conductivity than the connecting portion, so that the reaction chamber can be quickly heated to a uniform temperature. Can be.

  Further, according to the present invention, the reaction product generated by the reaction device can be used as a fuel to generate power in the fuel cell. Therefore, the raw material that is easier to handle than the gaseous fuel supplied to the fuel cell is used as the reaction device. The reaction product can be used as fuel for the fuel cell. Therefore, by storing a raw material that is easier to handle than gaseous fuel, it is possible to generate power with the fuel cell and to realize a fuel cell system that is easy to handle.

  In addition, according to the present invention, it is possible to realize an electronic device that is driven by generating electricity with a fuel cell system.

  Moreover, according to this invention, electric power required by an operation part, a display part, and an operation control part can be generated with a fuel cell system, and can be supplied. In this way, it is possible to realize an electronic device that generates and drives the fuel cell system.

  FIG. 1 is a cross-sectional view showing a reaction apparatus 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the reaction apparatus 1. FIG. 3 is a block diagram of the fuel cell system 2 including the reaction device 1. The reaction apparatus 1 is an apparatus for chemically reacting raw materials to generate a reaction product. In the present embodiment, the reactor 1 is provided in the fuel cell system 2 and is used as a reformer for generating fuel used for power generation in the fuel cell 3.

  The reactor 1 selects a reformer 4 that is a high-temperature reaction section that reforms a fuel containing a compound containing hydrogen in its composition to generate hydrogen gas, and carbon monoxide in a temperature range lower than that of the high-temperature reaction section. A carbon monoxide remover (hereinafter referred to as “CO remover”) 5, which is a low-temperature reaction part that oxidizes automatically, and a connecting part 6 are provided. The reformer 4 and the CO remover 5 are disposed apart from each other and are connected by a connecting portion 6. Therefore, in the reaction apparatus 1, the reformer 4, the connecting part 6, and the CO remover 5 are provided in this order in the first direction x. The reformer 4, the CO remover 5, and the connecting portion 6 are accommodated in an insulating material such as ceramic or a metal heat insulating package 21, and the heat insulating package 21, the reformer 4, the CO remover 5, and the connecting portion 6 are connected. The space is at a pressure lower than atmospheric pressure, preferably less than 1 Pa.

At least one of the reformer 4 and the CO remover 5, in the present embodiment, both have ceramic regions 11 and 12 made of ceramics and lids 15 and 16 made of metal material, for example, stainless steel, which are metal parts. Composed in combination. As ceramics, for example, alumina ceramics (thermal conductivity: 16 W / (m · K), thermal expansion coefficient: 7 × 10 ⁻⁶ / ° C.) mainly composed of alumina (Al ₂ O ₃ ), Al ₂ O ₃ and glass Is a glass ceramic (thermal conductivity 2 W / (m · K), thermal expansion coefficient 5.5 × 10 ⁻⁶ / ° C.). As the metal material for the lids 15 and 16, there is stainless steel such as SUS304, the thermal conductivity is 16.3 W / (m · K), and the thermal expansion coefficient from room temperature to 100 ° C. is 17.3 × 10 ^{−. 6} / ° C. The connecting portion 6 includes a ceramic region 13 made of ceramics. In the present embodiment, the connecting portion 6 is composed only of the ceramic region 13. “Thermal expansion coefficient” means a linear expansion coefficient, and is an average thermal expansion coefficient in a temperature range of 0 to 1000 ° C. unless otherwise specified.

  FIG. 4 is a perspective view showing the ceramic substrate 14 in a state where the reformer joining member 18 and the remover joining member 20 are provided. Referring to FIGS. 1 and 2 together, a ceramic region (hereinafter referred to as “reformer ceramic region”) 11 constituting the reformer 4 and a ceramic region (hereinafter referred to as “removal ceramic region”) constituting the CO remover 5. ) 12 and a ceramic region (hereinafter referred to as “connecting portion ceramic region”) 13 constituting the connecting portion 6 are arranged along the same plane to form a monolithic ceramic substrate 14. That is, the ceramic substrate 14 extends over the reformer ceramic region 11, the remover ceramic region 12, and the connecting portion ceramic region 13 along a plane parallel to the first direction x and the second direction y perpendicular to the first direction. A plurality of continuous ceramic layers are laminated along the third direction z.

  The reformer ceramic region 11 has a rectangular plate shape whose long side is parallel to the second direction y. The remover ceramic region 12 has a rectangular plate shape whose long side is parallel to the first direction x. In the ceramic substrate 14, the first direction x is the longitudinal direction, and the second direction y is the width direction. The dimensions of the reformer ceramic region 11 and the remover ceramic region 12 in the second direction y are the same, and the dimensions of the connecting ceramic region 13 in the second direction y are the reformer ceramic region 11 and the remover ceramic. It is smaller than the dimension of the region 12 in the second direction y. Therefore, the ceramic substrate 14 is seen from the connecting portion ceramic region 13 between the wide portion made of the reformer ceramic region 11 and the wide portion made of the remover ceramic region 12 when viewed in the third direction z which is the thickness direction. It has a narrow part. The third direction z is orthogonal to the plane along the first direction x and the second direction y.

  As described above, the connecting portion ceramic region 13 having the small second direction dimension y may be configured to connect the end portions in the second direction y of the reformer ceramic region 11 and the remover ceramic region 12. In the present embodiment, the central portions of the reformer ceramic region 11 and the remover ceramic region 12 in the second direction y are connected to each other. The connecting portion ceramic region 13 which becomes the narrow portion in the ceramic substrate 14 has at least the outer surface of the portion connected to the reformer ceramic region 11 and the remover ceramic region 12 which becomes the wide portion in the ceramic substrate 14 having a concave curved surface. The reformer ceramic region 11 and the remover ceramic region 12 which are formed in a wide shape and are smoothly connected to the outer surfaces of the reformer ceramic region 11 and the remover ceramic region 12. In the present embodiment, the connecting portion ceramic region 13 is formed in a concave curved shape on both sides in the second direction y, more specifically in a circular concave shape, and the reformer ceramic region 11 and the remover ceramic region 12. Are smoothly connected to the end face in the first direction x. As described above, the connecting portion ceramic region 13 has a narrower width in the second direction y than the reformer ceramic region 11 and the remover ceramic region 12 and has a structure in which stress is likely to be concentrated relatively. Since the connecting end portions of the reformer ceramic region 11 and the remover ceramic region 12 are wider than the central portion, the stress is easily dispersed and the stress is not concentrated on the connecting end portion. The damage at the connecting end can be suppressed.

  Further, the ceramic substrate 14 may be formed so that the dimensions in the third direction z that are the thickness dimensions of the reformer ceramic region 11, the remover ceramic region 12, and the connecting portion ceramic region 13 are the same or different. May be formed. Although the same dimensions are shown in the figure, in the present embodiment, the dimensions in the third direction z of the connecting portion ceramic region 13 that becomes the narrow portion are the reformer ceramic region 11 that becomes the wide portion and the removal. The ceramic ceramic region 12 is formed to be smaller than the dimension in the third direction z. In this embodiment, the connection part ceramic area | region 13 is formed so that it may become an arc-shaped concave curved surface shape in detail, as shown in FIG. The dimension in the second direction y of the end surface connected to the removal part ceramic region 12 and the dimension in the second direction y of the end surface connected to the remover ceramic region 12 are the dimensions in the second direction y at the central portion of the connection part ceramic region 13. The side surfaces that are longer and extend along the first direction x are smoothly connected.

  FIG. 5 is a perspective view showing the reformer lid 15. Referring to FIGS. 1, 2 and 4 together, a lid (hereinafter referred to as “reformer lid”) 15 constituting the reformer 4 and a lid (hereinafter “remover”) constituting the CO remover 5. 16 is provided on one side in the thickness direction of the ceramic substrate 14. The thickness direction of the ceramic substrate 14 is also the third direction z. The reformer lid 15 is joined to the reformer ceramic region 11 and seals the space above the reformer ceramic region 11, and the remover lid 16 is joined to the remover ceramic region 12. The space above the remover ceramic region 12 is sealed.

  The reformer lid body 15 has a substantially rectangular parallelepiped housing shape that opens to one side, and has a peripheral wall that extends all around and a top plate that closes one of the peripheral walls. Although not shown in FIG. 1, the reformer lid 15 is provided with the open end 17 where the outward flange portion is formed facing the reformer ceramic region 11 as shown in FIG. 2. An annular bonding member (hereinafter referred to as “reformer bonding member”) 18 extending over the entire circumference is provided on the outer peripheral portion of the reformer ceramic region 11 on the surface portion on one side in the thickness direction of the reformer ceramic region 11. ing. The reformer lid 15 has a structure in which an open end 17 is joined to the reformer ceramic region 11 via a reformer joining member 18.

  FIG. 6 is a perspective view showing the remover lid body 16. Referring to FIGS. 1, 2 and 4 together, the remover lid body 16 has a substantially rectangular parallelepiped housing shape opened to one side, and has a peripheral wall extending all around and a top plate closing one of the peripheral walls. is doing. Although not shown in FIG. 1, the remover lid body 16 is provided with the open end 19 where the outward flange portion is formed facing the remover ceramic region 12 as shown in FIG. 2. An annular joining member (hereinafter referred to as “removal member joining member”) 20 extending over the entire circumference is provided on the outer peripheral portion of the remover ceramic region 12 on the surface portion on one side in the thickness direction of the remover ceramic region 12. The remover lid 16 has a structure in which an open end 19 is joined to the remover ceramic region 12 via a remover joining member 20.

The reformer joining member 18 and the remover joining member 20 are, for example, an iron-nickel-cobalt (Fe-Ni-Co) alloy (thermal expansion coefficient 10 × 10 ⁻⁶ / ° C.) or an iron-nickel (Fe—Ni) alloy. (Thermal expansion coefficient 12 × 10 ⁻⁶ / ° C.). The thermal expansion coefficients of the reformer joining member 18 and the remover joining member 20 (average thermal expansion coefficients in the temperature range of 0 to 1000 ° C.) are respectively the thermal expansion coefficients of the reformer lid body 15 and the remover lid body 16. A value between the coefficient of thermal expansion of the reformer ceramic region 11 and the remover ceramic region 12. The reformer joining member 18 is joined to the reformer ceramic region 11 by brazing or the like, and the reformer lid 15 is joined to the reformer joining member 18 by welding such as seam welding or brazing. . The remover joining member 20 is joined to the remover ceramic region 12 by brazing or the like, and the remover lid 16 is joined to the remover joining member 20 by welding such as seam welding or brazing. In this way, the reformer lid 15 and the remover lid 16 are joined to the reformer ceramic region 11 and the remover ceramic region 12, respectively, and an internal space is formed in the reformer 4 and the remover 5, respectively. The

  FIG. 7 is a perspective view showing the reformer partition wall 26 in a state where the reformer fins 25 that are heat diffusion members are provided. FIG. 8 is a perspective view showing the remover partition wall 28 in a state where the remover fins 27 that are heat diffusion members are provided. FIG. 9 is a perspective view showing the reaction apparatus 1 with the reformer lid 15 and the remover lid 16 removed. Referring to FIGS. 1 and 4 in combination, partition walls 26 and 28 for partitioning the internal space are provided in at least one of reformer 4 and CO remover 5, respectively, in the present embodiment. A partition wall (hereinafter referred to as “reformer partition wall”) 26 provided in the reformer 4 and a partition wall (hereinafter referred to as “removal partition wall”) 28 provided in the CO remover 5 have long sides parallel to the second direction y. It is substantially rectangular.

  A partition wall support base (hereinafter referred to as “reformer partition wall support base”) is separated from the reformer joint member 18 on the inner side of the reformer joint member 18 on the surface portion on one side in the thickness direction of the reformer ceramic region 11. 29) is provided. The reformer partition wall support 29 is an annular member extending over the entire circumference. The reformer partition wall 26 is disposed in parallel with the reformer ceramic region 11, and the outer periphery is joined to the reformer ceramic region 11 via the reformer partition support 29. By providing the reformer partition wall 26, the reformer 4 includes a reformer combustion chamber 30 that is a heat generation part inside the reformer partition support 29 and a reformer partition support 29. A reforming reaction chamber 31 which is an outer high temperature reaction chamber is formed. The reforming reaction chamber 31 corresponds to a housing part. The reformer combustion chamber 30 and the reforming reaction chamber 31 are adjacent to each other via the reformer partition wall 26. The reformer combustion chamber 30 is formed away from the reformer joint member 18 inward.

  A partition wall support base (hereinafter referred to as “removal partition wall support base”) 33 is provided on the surface portion on one side in the thickness direction of the remover ceramic region 12 and is spaced apart from the remover joint member 20 on the inner side of the remover joint member 20. Is provided. The remover partition support 33 is an annular member extending over the entire circumference. The remover partition 28 is disposed in parallel with the remover ceramic region 12, and the outer peripheral portion is joined to the remover ceramic region 12 via the remover partition support 33. By providing the remover partition wall 28, the CO remover 5 is provided with a remover combustion chamber 34 that is a heat generating part inside the remover partition support 33 and a low temperature outside the remover partition support 33. A removal reaction chamber 35 which is a reaction chamber is formed. The removal reaction chamber 35 corresponds to a storage unit. The remover combustion chamber 34 and the removal reaction chamber 35 are adjacent to each other through the remover partition wall 28. The remover partition support 33 is provided in a region near the reformer 4 in the CO remover 5, and the remover combustion chamber 34 is formed in a region near the reformer 4 in the CO remover 5. . Further, the remover combustion chamber 34 is formed inwardly away from the remover joining member 20.

  The reformer partition wall 26 and the remover partition wall 28 are made of a metal such as stainless steel, iron-nickel-cobalt alloy, or iron-nickel alloy, which is the same material as the reformer lid body 15 and the remover lid body 16. The reformer partition support base 29 and the remover partition support base 33 are made of an iron-nickel-cobalt (Fe-Ni-Co) alloy or the like, which is the same material as the reformer joint member 18 and the remover joint member 20. Become. The thermal expansion coefficients (average thermal expansion coefficient in the temperature region of 0 to 1000 ° C.) of the reformer partition support 29 and the remover partition support 33 are the thermal expansion coefficients of the reformer partition 26 and the remover partition 28, and It is a value between the thermal expansion coefficients of the reformer ceramic region 11 and the remover ceramic region 12. The reformer partition support 29 is joined to the reformer ceramic region 11 by brazing or the like, and the reformer partition 26 is joined to the reformer partition support 29 by welding such as seam welding or brazing. The The remover partition support 33 is joined to the remover ceramic region 12 by brazing or the like, and the remover partition 28 is joined to the remover partition support 33 by welding such as seam welding or brazing.

  Moreover, as shown in FIG. 1, the joining site | part with the reformer partition wall support base 29 in the surface of the thickness direction one side of the reformer ceramic area | region 11 is depressed in the concave shape. Alternatively, the surface on one side in the thickness direction of the reformer ceramic region 11 on the inner side of the reformer partition support 29 in the reformer ceramic region 11 is raised in a convex shape. Alternatively, the dimension in the third direction z, which is the height dimension of the reformer partition wall support 29, is formed smaller than the dimension in the third direction z, which is the height dimension of the reformer connection member 18. With such a configuration, the thickness direction dimension of the reformer combustion chamber 30, that is, the dimension in the third direction z can be reduced, and the raw material can easily come into contact with the inner surface that defines the reformer combustion chamber 30. Therefore, by making the catalyst adhere to the inner surface that defines the reformer combustion chamber 30, the catalyst can be easily contacted and the reaction efficiency can be increased.

  Further, although not shown in FIG. 4, as shown in FIG. 1, the reformer combustion chamber 30 is provided with a partition member (hereinafter referred to as “reformer partition member”) 32 on the reformer ceramic region 11. In the remover combustion chamber 34, a partition member (hereinafter referred to as “remover partition member”) 36 is provided on the remover ceramic region 12. The reformer partition member 32 is a member extending in the second direction y. By providing the reformer partition member 32, a flow path that snakes in the second direction y is formed in the reformer combustion chamber 30. The The remover partition member 36 is a member extending in the second direction y. By providing the remover partition member 36, a flow path that meanders in the second direction y is formed in the reformer combustion chamber 30. The reformer partition member 32 and the remover partition member 36 are made of an iron-nickel-cobalt (Fe-Ni-Co) alloy or the like, which is the same material as the reformer partition support base 29. The reformer partition member 32 is joined to the reformer ceramic region 11 by brazing or the like, and the remover partition member 36 is joined to the remover ceramic region 12 by brazing or the like.

A catalyst is deposited on the reformer partition wall 26 or the reformer partition member 32 in order to promote the combustion reaction to be performed in the reformer combustion chamber 30. The remover partition wall 28 or the remover partition member 36 is coated with a catalyst on the surface in order to promote a combustion reaction to be performed in the remover combustion chamber 34. The catalyst deposited on the reformer partition 26 and the reformer partition member 32 is, for example, the reforming catalyst CuZnO / Al ₂ O ₃ , and the catalyst deposited on the remover partition 28 and the remover partition member 36 is For example, removal catalyst Pt / Al ₂ O ₃ .

  Moreover, as shown in FIG. 1, the joining site | part with the remover partition wall support base 33 in the surface of the thickness direction one side of the remover ceramic area | region 12 is depressed in concave shape. Or the surface of the thickness direction one side of the remover ceramic area | region 12 in the inward side of the remover partition support base 33 of the remover ceramic area | region 12 protrudes in convex shape. Or the dimension of the 3rd direction z which is the height dimension of the remover partition support base 33 is formed smaller than the dimension of the 3rd direction z which is the height dimension of the remover connection member 20. With such a configuration, the thickness direction dimension of the remover combustion chamber 34, that is, the dimension in the third direction z can be reduced, and the raw material can easily come into contact with the inner surface defining the remover combustion chamber 34. Therefore, by making the catalyst adhere to the inner surface that defines the remover combustion chamber 34, the catalyst can be easily contacted and the reaction efficiency can be increased.

  As shown in FIG. 1, the reforming reaction chamber 31 includes a plurality of fins (hereinafter referred to as “reformer fins”) 25 as shown in FIG. 7, a reformer partition wall 26 and a reformer lid 15. It is provided between the top plate. Each reformer fin 25 is a rectangular plate-like fin extending in the first and third directions x and z, and is provided with the longitudinal direction arranged in the first direction x and spaced in the second direction y. It is done. The reformer fins 25 are alternately shifted in the first direction x. The reformer fin 25 partitions an internal space of the reforming reaction chamber 31 that is a flow path formed in the reforming reaction chamber 31, and the reformer reaction chamber 31 includes a reformer combustion chamber 30 and a reformer. Adjacent through the partition wall 26, a meandering flow path is formed so that there is an amplitude in the first direction x.

  Each reformer fin 25 is joined and erected on the reformer partition wall 26. Although not shown in FIG. 1, each reformer fin 25 is formed in a bowl shape with an end portion 37 on the reformer partition wall 26 side bent vertically as shown in FIGS. 7 and 9. Each reformer fin 25 is made of iron-nickel-cobalt alloy, iron-nickel alloy, stainless steel, or the like, and is spot-welded at a bowl-shaped end portion 37 and is erected on the reformer partition wall 26. Each reformer fin 25 is separated from the inner surface defining the reforming reaction chamber 31 excluding the surface of the reformer partition wall 26. That is, a slight gap is provided between the upper part of each reformer fin 25 and the inner surface of the reformer lid 15. For this reason, even if the reformer fin 25 made of metal thermally expands in the third direction z when the reformer 4 is heated to, for example, 280 ° C. to 350 ° C., the reformer 4 is reformed by stress due to thermal expansion. Similarly, even if the reformer lid 15 does not push the reformer lid 15 and the reformer lid 15 is bent to some extent toward the reformer fin 25 due to thermal expansion, the reformer lid 15 is modified. Since the material fin 25 is not pushed, the reformer lid 15 or the reformer fin 25 is prevented from being damaged or deformed, and the reformer lid 15 is detached from the ceramic region 11. It is possible to prevent a gap in which the fluid leaks at the joined portion joined by the reformer joining member 18.

  Each reformer fin 25 is coated with a catalyst on both sides in order to promote a chemical reaction to be performed in the reforming reaction chamber 31. For this reason, since the fluid can efficiently contact the catalyst by the reformer fin 25 that separates the left and right of the flow path, the reaction can be promptly promoted. In addition, since the same catalyst as the reformer fin 25 is provided on the reformer partition wall 26, the amount of the catalyst supported further increases, and the same catalyst as the reformer fin 25 is formed on the inner surface of the top plate of the reformer lid 15. By being provided, the amount of catalyst supported can be increased. As described above, the reformer fin 25, the reformer partition wall 26, and the reformer lid 15 are all made of the above-described metal parts, so that they have excellent heat propagation properties, quickly heat the catalyst, and efficiently. Can cause a reaction.

The catalyst deposited on each reformer fin 25 is, for example, a copper (Cu) / zinc oxide (ZnO) catalyst. The Cu / ZnO-based catalyst may be a catalyst in which a Cu component is supported on a ZnO component, or may be a catalyst in which a Cu component and a ZnO component are supported on aluminum oxide (Al ₂ O ₃ ). . Further, a Cu / ZnO-based catalyst containing a platinum group element may be used. Examples of the platinum group element include ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and platinum (Pt).

  As shown in FIG. 1, the removal reaction chamber 35 has a plurality of fins (hereinafter referred to as “removal device fins”) 27 as shown in FIG. 8 near the reformer 4 in which the removal device combustion chamber 34 is provided. In the region, it is provided between the remover partition 28 and the top plate of the remover lid 16. Each remover fin 27 is a rectangular plate-like fin extending in the second and third directions y and z, and is arranged side by side in the first direction x with the longitudinal direction arranged in the second direction y. . The remover fins 27 are alternately displaced in the second direction y. The reformer fins 27 divide the internal space of the removal reaction chamber 35, which is a flow path formed in the removal reaction chamber 35. The reformer fins 27 partition the removal reaction chamber 35 through the remover partition wall 28. Adjacent and meandering flow paths having an amplitude in the second direction y are formed.

  Each remover fin 27 is joined and erected to the remover partition wall 28. Although not shown in FIG. 1, each of the remover fins 27 is formed in a bowl shape with an end portion 38 on the remover partition wall 28 side bent vertically as shown in FIGS. Each remover fin 27 is made of iron-nickel-cobalt alloy, iron-nickel alloy, stainless steel, or the like, which is the same material as each reformer fin 25, and is spot-welded at a bowl-shaped end 38 to remove the remover. Standing on the partition wall 28. Each remover fin 27 is separated from the inner surface defining the removal reaction chamber 35 excluding the surface of the remover partition wall 28. That is, a slight gap is provided between the upper portion of each remover fin 27 and the inner surface of the remover lid body 16. For this reason, even when the CO remover 5 is heated to, for example, 150 ° C. to 200 ° C., even if the remover fin 27 made of metal is thermally expanded in the third direction z, the remover fin is caused by stress due to thermal expansion. 27 does not push the remover lid 16. Similarly, even if the remover lid 16 is bent to some extent toward the remover fin 27 due to thermal expansion, the remover lid 16 pushes the remover fin 27. Therefore, it is possible to prevent the remover lid 16 from being removed from the remover ceramic region 12 or the remover lid 16 or the remover fin 27 to be damaged or deformed, and further joined by the remover joining member 20. It is possible to prevent a gap from leaking fluid from occurring at the joined portion or the joined portion joined by the remover partition support 33.

  Further, as shown in FIGS. 1 and 4, the removal reaction chamber 35 includes the reformer 4 in a region opposite to the reformer 4 in the CO remover 5, and thus in a region where the remover combustion chamber 34 is formed. A plurality of auxiliary fins 40 are provided in a region adjacent on the opposite side. Each auxiliary fin 40 is a rectangular plate-like fin extending in the second and third directions y and z, and is arranged in the first direction x with the longitudinal direction arranged in the second direction y and spaced apart. The auxiliary fins 40 are alternately displaced in the second direction y. The auxiliary fin 40 partitions the internal space of the removal reaction chamber 35, which is a flow path formed in the removal reaction chamber 35, and the removal reaction chamber 35 is connected to the flow path formed by each of the remover fins 27. A meandering flow path is formed so that there is an amplitude in two directions y. The flow path formed by each auxiliary fin 40 is not adjacent to the remover combustion chamber 34.

  On the surface portion on one side in the thickness direction of the remover ceramic region 12, it is separated from the remover joining member 20 on the inner side of the remover joining member 20, and is opposite to the reformer 4 from the remover partition wall support 33. A plurality of auxiliary fin support bases 44 are provided apart from each other. Each auxiliary fin support base 44 is a substantially rectangular plate-like member extending in the first and second directions x and y. The longitudinal direction is arranged in the second direction y, and the first direction x is spaced from each other. It is provided side by side. As with the auxiliary fins 40, the auxiliary fin support bases 44 are alternately displaced in the second direction y. The auxiliary fin support 44 is made of iron-nickel-cobalt (Fe-Ni-), which is the same material as the reformer joining member 18 and the remover joining member 20, and the reformer partition support 29 and the remover partition support 33. Co) alloy and joined to the remover ceramic region 12 by brazing or the like.

  Each auxiliary fin 40 is joined and erected on the auxiliary fin support 44. Although not shown in FIG. 1, each auxiliary fin 40 is formed in a hook shape with an end 45 on the auxiliary fin support base 44 side bent vertically as shown in FIGS. 4 and 9. Each auxiliary fin 40 is made of iron-nickel-cobalt alloy, iron-nickel alloy, stainless steel, or the like, which is the same material as each reformer fin 25 and each remover fin 27, and is spotted at a bowl-shaped end 45. It is welded and erected on the auxiliary fin support 44. Each auxiliary fin 40 is separated from the inner surface defining the removal reaction chamber 35 excluding the surface of the auxiliary fin support 44. Accordingly, each auxiliary fin 40 is retracted inward from the remover lid 16 and is slightly separated. For this reason, even if the auxiliary fin 40 made of metal is thermally expanded in the third direction z when the CO remover 5 is heated to, for example, 150 ° C. to 200 ° C., the auxiliary fin 40 is caused by stress due to thermal expansion. Since the remover lid 16 is not pushed, and similarly, even if the remover lid 16 is bent to the auxiliary fin 40 side by thermal expansion to some extent, the remover lid 16 does not push the auxiliary fin 40. Further, it is possible to prevent the remover lid 16 from being detached from the ceramic substrate 14 and a gap in which fluid leaks at the joint.

  The thermal conductivity of the reformer fin 25, the remover fin 27, and the auxiliary fin 40 is 17 to 24 W / (m · K).

  Each remover fin 27 and each auxiliary fin 40 are coated with a catalyst on both sides in order to promote a chemical reaction to be performed in the removal reaction chamber 35. For this reason, since the fluid can efficiently contact the catalyst by the remover fins 27 separating the left and right of the flow path, the reaction can be promptly promoted. Further, the same catalyst as that of the remover fin 27 is provided in each auxiliary fin 40, whereby the reaction can be promoted more rapidly and the amount of the catalyst supported can be increased. Further, since the same catalyst as the remover fin 27 is provided on the remover partition wall 28, the amount of catalyst supported is further increased, and the same catalyst as the remover fin 27 is provided on the inner surface of the top plate of the remover lid 16. Further, the amount of catalyst supported can be increased. As described above, the remover fin 27, the remover partition wall 28, and the remover lid body 16 are all made of the above-described metal parts, so that they have excellent heat propagation characteristics, quickly heat the catalyst, and cause a reaction efficiently. be able to.

The catalyst deposited on each remover fin 27 is, for example, a Pt-based catalyst. By using these catalysts, CO can be selectively oxidized. The Pt-based catalyst may be a catalyst in which Pt is supported on Al ₂ O _{3 or} a catalyst in which Pt and a platinum group element other than Pt are supported on Al ₂ O ₃ . Examples of platinum group elements other than Pt include Ru, Rh, Pd, Os, and Ir.

  Each reformer fin 25 and each remover fin 27 may have a configuration in which only one of them is provided, but in this embodiment, both the reformer fin 25 and each remover fin 27 are provided. Is provided. Moreover, when it is the structure where each remover fin 27 is not provided, each auxiliary device fin 40 may be provided or may not be provided.

  As shown in FIG. 1, a heater 48 and a heater 49 are provided in the reformer ceramic region 11 and the remover ceramic region 12, respectively. The heater 48 and the heater 49 are provided at positions facing the reformer 4 and the CO remover 5 in the reformer ceramic region 11 and the remover ceramic region 12, respectively. For this reason, the heater 48 and the heater 49 can directly heat the reformer 4 and the CO remover 5, respectively. In particular, the reformer 4 and the CO remover 5 can be heated to temperatures that cause a reaction, respectively, even if off-gas described later has not reached the reformed combustion chamber 30 and the remover combustion chamber 34. If the heating temperatures of the reformer 4 and the CO remover 5 are the same, the heater is an integral structure built in the reformer ceramic region 11, the remover ceramic region 12, and the connecting portion ceramic region 13. May be.

  Both the heater 48 and the heater 49 are so-called heating resistors that generate heat quickly when electric power is supplied, and the generated heat is generated so that the reforming reaction chamber 31 and the removal reaction chamber 35 have predetermined temperatures, respectively. Can be supplied to the reforming reaction chamber 31 and the removal reaction chamber 35. The heater 48 and the heater 49 apply reforming reactions to the reforming reaction chamber 31 and the removal reaction chamber 35, respectively, when the fuel cell system 2 is activated, that is, before the hydrogen is supplied to the fuel cell 3. And rapidly heating to a temperature that causes a carbon monoxide removal reaction.

  FIG. 10 is a cross-sectional view of the ceramic substrate 14 as seen from the section line S10-S10 in FIG. FIG. 10 shows an example of the flow path 50 formed in the ceramic substrate 14. In the ceramic substrate 14, a flow path (hereinafter referred to as “substrate internal flow path”) 50 through which a fluid related to a chemical reaction in the reformer 4 and the CO remover 5 flows is formed. The substrate internal flow path 50 is a flow path for pre-processing the fluid, and the pre-processing includes preheating and vaporization.

  The substrate internal flow path 50 has first to eighth flow paths 51 to 58. The first to eighth flow paths 51 to 58 are formed independently so as not to communicate with each other. The first to eighth flow paths 51 to 58 have portions extending in the first and second directions x and y along a plane basically perpendicular to the third direction z, as in the example of FIG. Although the flow path may expand in a plane, it may be a three-dimensional flow path having a portion extending in the first to third directions x to z and expanding three-dimensionally. In the example shown in FIG. 10, the first to eighth channels 51 to 58 are shifted from each other in the first and second directions x and y in the same layer region in the third direction z that is the thickness direction of the ceramic substrate 14. However, they may be formed at positions shifted in the third direction z so as not to communicate with each other.

  The first flow path 51 is a raw material vaporization path that serves as a raw material vaporizer that vaporizes the raw material for the reforming reaction, and is a flow path that supplies the vaporized raw material to the reforming reaction chamber 31. The first flow path 51 has an inlet 51a that opens in a pipeline connection region in the remover ceramic region 12, and meanders in the remover ceramic region 12 so as to have an amplitude in the second direction y. Passing through, extending to the reformer ceramic region 11, meandering in the second direction y within the reformer ceramic region 11, and the outlet 51 b faces the reforming reaction chamber 31 of the reformer ceramic region 11. It opens at the surface part on one side in the thickness direction. The first flow path 51 is connected to the upstream end of the flow path in the reforming reaction chamber 31 formed by each reformer fin 25 at the outlet 51b. The first flow path 51 is formed so as to meander in the region where the reforming combustion chamber 30 and the remover combustion chamber 34 are provided, at least when projected onto a plane perpendicular to the third direction z. ing.

  Here, the pipe connection region is a pipe consisting of a pipe 22 or the like for guiding the raw material of the reforming reaction from the supply source to the reactor 1, and the product generated in the reactor 1 is supplied to the fuel cell 3 as fuel. A pipe for guiding the raw material necessary for the CO removal reaction in the removal reaction chamber 35 from the supply source, a pipe for guiding the raw material for the combustion reaction from the supply source, and the combustion reaction in the reformer combustion chamber 30 A conduit for guiding the product to be discharged to the discharge location, a conduit for guiding the raw material of the combustion reaction from the supply source, and a conduit for guiding the product generated by the combustion reaction in the reformer combustion chamber 30 to the discharge location. An area for connecting to the reaction apparatus 1.

  Such a pipe connection region is preferably provided, for example, in the region of the surface portion on the other side in the thickness direction of the remover ceramic region 12. In other words, the pipe line and the remover are provided in the remover ceramic region 12 that reacts in a temperature range lower than the reforming reaction, rather than in the reformer ceramic region 11 that performs the high temperature reaction. The stress generated by the difference in thermal expansion of the connection portion with the ceramic region 12 can be reduced, and the connection portion can be effectively prevented from being damaged.

  The inlet 51a of the first flow path 51 is connected to a pipe line that guides the raw material for the reforming reaction from the supply source. The amount of heat necessary for the raw material vaporizer is the amount of heat required to heat the raw material to the boiling point of the raw material. If the raw material is a methanol aqueous solution, it is sufficient if the raw material is heated to about 100 ° C to 120 ° C. For this reason, even if the periphery of the first flow path 51 is made of a material having a relatively lower thermal conductivity than a metal such as ceramic, it can be heated sufficiently. The first flow path 51 overlaps with the reformer 4 and the CO remover 5 that react at a higher temperature than the raw material vaporizer when viewed in plan from the third direction z. The raw material can be vaporized by the residual heat of the reformer combustion chamber 30 and the remover combustion chamber 34 to be heated, and the residual heat of the heaters 48 and 49, respectively, and can be accommodated in a thin substrate like the ceramic substrate 14.

  The second flow path 52 is a flow path that guides the fluid containing the product (hydrogen) generated by the reforming reaction in the reforming reaction chamber 31 and carbon monoxide to the removal reaction chamber 35. The second flow path 52 opens at the surface portion on one side in the thickness direction where the inlet 52a faces the reforming reaction chamber 31 of the reformer ceramic region 11, passes through the connecting portion ceramic region 13, and enters the remover ceramic region 12. The outlet 52b is open at the surface portion on one side in the thickness direction facing the removal reaction chamber 35 of the remover ceramic region 12. The second flow path 52 is connected to the downstream end of the flow path in the reforming reaction chamber 31 formed by each reformer fin 25 at the inlet 52a, and each remover fin 27 and each auxiliary is connected at the outlet 52b. The series of removal reaction chambers 35 formed by the fins 40 are connected to the upstream end of the flow path. The second flow path 52 is a communication path that allows the reforming reaction chamber 31 and the removal reaction chamber 35 to communicate with each other, and is formed so as to pass through the connecting portion 6.

  The third flow channel 53 removes carbon monoxide from the product produced by the reforming reaction in the reforming reaction chamber 31 by the CO removal reaction in the removal reaction chamber 35, and the product finally produced is removed. This is a flow path for sending out from the reaction apparatus 1. The third flow channel 53 is formed to extend in the third direction z, which is the thickness direction, in the remover ceramic region 12, and is a surface portion on one side in the thickness direction where the inlet 53 a faces the removal reaction chamber 35 of the remover ceramic region 12. Opened, the outlet is opened in the pipe connection region, and penetrates the ceramic substrate 14. The third flow channel 53 is connected to the downstream end of the flow channel in the series of removal reaction chambers 35 formed by the respective remover fins 27 and the auxiliary fins 40 at the inlet 53a. A pipe 22 for supplying the product generated in the reaction apparatus 1 as fuel to the fuel cell 3 is connected to the outlet 53 b of the third flow path 53.

  The fourth flow path 54 is a flow path for supplying the raw material (oxygen or air) necessary for the CO removal reaction in the removal reaction chamber 35 to the removal reaction chamber 35, and is supplied to the removal reaction chamber 35 by the fourth flow path 54. The raw material to be mixed is mixed with the product guided from the reforming reaction chamber 31 by the second flow path 52. The fourth flow path 54 has an inlet 54a that opens in the pipeline connection region, meanders in the second direction y within the remover ceramic region 12, and faces the removal reaction chamber 35 in the remover ceramic region 12. It opens at the surface part on one side in the thickness direction. The fourth flow channel 54 is connected to the upstream end portion of the flow channel in the series of removal reaction chambers 35 formed by the remover fins 27 and the auxiliary fins 40 at the outlet 54b. The fourth flow path 54 is formed so as to meander in the region where the remover combustion chamber 34 is provided, at least when projected onto a plane perpendicular to the third direction z. Connected to the inlet 54a of the fourth flow path 54 is a pipe line that mixes with the product guided from the reforming reaction chamber 31 and guides the raw material necessary for the CO removal reaction in the removal reaction chamber 35 from the supply source. .

  The fifth channel 55 is a channel for supplying a raw material for the combustion reaction to the reformer combustion chamber 30. The fifth flow channel 55 has an inlet 55a that opens in the pipe connection region, meanders in the remover ceramic region 12 so as to have an amplitude in the second direction y, passes through the connecting portion ceramic region 13 and is reformer. Extending to the ceramic region 11, meandering so as to have an amplitude in the second direction y within the reformer ceramic region 11, and the outlet 55 b on one side in the thickness direction facing the reformer combustion chamber 30 of the reformer ceramic region 11. Open at the surface. The fifth channel 55 is connected to the upstream end of the channel in the reformer combustion chamber 30 formed by the reformer partition member 32 at the outlet 55b. Further, the fifth flow path 55 is formed so as to meander in a region where the reforming combustion chamber 30 and the remover combustion chamber 34 are provided, at least when projected onto a plane perpendicular to the third direction z. ing. The inlet 55a of the fifth flow path 55 is connected to a conduit that guides the raw material for the combustion reaction from the supply source.

  The sixth flow path 56 is a flow path for discharging the fluid after the combustion reaction in the reformer combustion chamber 30 from the reaction apparatus 1. The sixth flow path 56 opens at the surface portion on one side in the thickness direction where the inlet 56a faces the reformer combustion chamber 30 of the reformer ceramic region 11, passes through the connecting portion ceramic region 13, and the remover ceramic region 12. The outlet 56b is opened in the pipeline connection region. The sixth flow path 56 is connected to the downstream end of the flow path in the reformer combustion chamber 30 formed by the reformer partition member 32 at the inlet 56a. The outlet 56b of the sixth flow path 56 is connected to a pipe for guiding the product generated by the combustion reaction in the reformer combustion chamber 30 to the discharge location.

  The seventh flow path 57 is a flow path for supplying the raw material for the combustion reaction to the remover combustion chamber 34. The seventh flow path 57 has a thickness in which the inlet 57a opens in the pipe connection region, meanders in the second direction y in the remover ceramic region 12, and the outlet 57b faces the remover combustion chamber 34 in the remover ceramic region 12. It opens at the surface portion on one side in the direction. The seventh flow path 57 is connected to the upstream end of the flow path in the remover combustion chamber 34 formed by the remover partition member 36 at the outlet 57b. Further, the seventh flow path 57 is formed so as to meander in a region where the remover combustion chamber 34 is provided at least when projected onto a plane perpendicular to the third direction z. Connected to the inlet 57a of the seventh flow path 57 is a conduit for guiding the raw material of the combustion reaction from the supply source.

  The eighth flow path 58 is a flow path for discharging the fluid after the combustion reaction in the remover combustion chamber 34 from the reaction apparatus 1. The eighth flow path 58 opens at the surface portion on one side in the thickness direction where the inlet 58a faces the remover combustion chamber 34 of the remover ceramic region 12, and the outlet 58b opens at the pipe connection region. The eighth channel 58 is connected to the downstream end of the channel in the remover combustion chamber 34 formed by the remover partition member 36 at the inlet 58a. The outlet 58b of the eighth flow path 58 is connected to a conduit for guiding the product generated by the combustion reaction in the reformer combustion chamber 30 to the discharge location. The inlets 51 a, 54 a, 55 a, 57 a and the outlets 53 b, 56 b, 58 b are connected to the pipes 22, and each pipe 22 penetrates the heat insulating package 21 so as to maintain the airtightness of the heat insulating package 21, and will be described later. 60, the fuel cell 3 and the like. Further, the wiring for supplying a voltage to the heater 48 and the heater 49 also penetrates the heat insulating package 21 so as to maintain the airtightness of the heat insulating package 21. When the heat insulation package 21 is a conductive member such as a metal, in the through hole through which the heat insulation package 21 is penetrated by the wiring so that the wiring for supplying voltage to the heater 48 and the heater 49 does not short-circuit through the heat insulation package 21, It is preferable to seal the periphery of the wiring with an insulating material such as ceramic or low melting point glass.

The ceramic substrate 14 in which the heaters 48 and 49 are provided and the substrate internal flow path 50 is formed is formed by laminating a plurality of ceramic layers. The ceramic substrate 14 is formed by sintering a plurality of materials before sintering, for example, a laminate in which green sheets are laminated. Examples of the raw material before sintering include alumina (Al ₂ O ₃ ), aluminum nitride (AlN), glass ceramic powder (a mixture of glass powder and filler powder), and the like. The heaters 48 and 49 are built in the ceramic substrate 14 by laminating and sintering the heaters 48 and 49 between the materials when the materials before sintering are laminated. In addition, by forming holes or grooves in appropriate portions of the material before sintering, laminating the materials including such holes or grooves, and then sintering, a complicated internal flow is formed inside the ceramic substrate 14. A path 50 is formed.

  1, 3, and 10, the fuel cell system 2 includes a raw material container 60 that stores a raw material and the above-described reactor 1 that generates hydrogen by chemically reacting the raw material stored in the raw material container 60. And a fuel cell 3 that generates electricity by an electrochemical reaction between oxygen and hydrogen. The raw materials stored in the raw material container 60 are a compound containing a hydrogen atom in a chemical composition such as alcohol such as methanol and ethanol and gasoline (hereinafter referred to as “hydrogen compound”) and water. The hydrogen compound and water are stored in separate spaces in the raw material container 60. In this embodiment, methanol is used as a raw material.

In the reaction apparatus 1, methanol and water stored in the raw material container 60 serving as a supply source are mixed and guided to the inlet of the first flow path 51 and vaporized while flowing down the first flow path 51. The reforming reaction chamber 31 is supplied. In the reforming reaction chamber 31, as shown in the chemical reaction formulas (1) and (2), a reforming reaction for reforming a mixed gas of methanol and water into hydrogen is performed.
CH ₃ OH + H ₂ O → 3H ₂ + CO ₂ (1)
H ₂ + CO ₂ → H ₂ O + CO (2)

If carbon monoxide is contained in the fluid supplied to the fuel cell 3, the catalyst provided in the fuel cell 3 is adversely affected. In order to remove the carbon monoxide, the reforming reaction chamber 31 The generated product is guided to the removal reaction chamber 35 by the second flow path 52. In the removal reaction chamber 35, as shown in the chemical reaction formula (3), carbon monoxide in the mixed gas of the product generated in the reforming reaction chamber 30 is supplied as a raw material through the fourth channel 54. Selectively oxidize with oxygen to remove carbon monoxide. This oxidation reaction is a CO removal reaction. By taking in ambient air, oxygen contained in this air is used. Therefore, the fourth flow path 54 uses the space outside the reaction apparatus 1 as a supply source and takes in and supplies air.
2CO + O ₂ → 2CO ₂ (3)

  The product produced by the reforming reaction in the reforming reaction chamber 31, and hence the product finally produced by removing carbon monoxide from the hydrogen, carbon dioxide and carbon monoxide by the oxidation reaction in the removal reaction chamber 35. Substances, and therefore hydrogen and carbon dioxide, are sent from the reactor 1 through the third flow path 53 and supplied to the fuel cell 3.

  The removal reaction chamber 35 that is a low temperature reaction chamber is a reaction chamber that performs a reaction at a lower temperature than the reforming reaction chamber 31 that is a high temperature reaction chamber. In the reforming reaction chamber 31, the reaction is performed at a temperature of, for example, 350 ° C., and in the removal reaction chamber 35, the reaction is performed at a temperature of, for example, 150 ° C.

The fuel cell 3 includes a fuel electrode carrying catalyst fine particles, an air electrode carrying catalyst fine particles, and a film-like solid polymer electrolyte membrane interposed between the fuel electrode and the air electrode. . A mixed gas of hydrogen and carbon dioxide is supplied from the reactor 1 to the fuel electrode of the fuel cell 3, and air from the outside is supplied to the air electrode of the fuel cell 3. In the fuel electrode, as shown in the electrochemical reaction formula (4), hydrogen in the mixed gas is separated into hydrogen ions and electrons under the action of the catalyst particles of the fuel electrode. Hydrogen ions are conducted to the oxygen electrode through the solid polymer electrolyte membrane, and electrons are taken out by the fuel electrode. At the oxygen electrode, as shown in the electrochemical reaction formula (5), water is generated by the reaction of electrons moved to the oxygen electrode, oxygen in the air, and hydrogen ions that have passed through the solid polymer electrolyte membrane. Yes.
H ₂ → 2H ⁺ + 2e ⁻ (4)
2H ⁺ + 1 / 2O ₂ + e ⁻ → H ₂ O (5)
The fuel cell 3 generates power by such an electrochemical reaction.

  In the reformer combustion chamber 30, heat for promoting the reforming reaction in the reforming reaction chamber 31 is generated. Further, the heat generated in the reformer combustion chamber 30 is supplied to the substrate internal flow path 50. Thereby, the raw material flowing down the substrate internal flow path 50 is heated. A fluid containing hydrogen and oxygen is supplied to the reformer combustion chamber 30 as a raw material through the fifth flow path 55. Hydrogen combusted in the reformer combustion chamber 30 remained without causing an electrochemical reaction in the fuel cell 3 among hydrogen contained in the products generated through the reforming reaction chamber 31 and the removal reaction chamber 35. Hydrogen, that is, unreacted hydrogen in the off-gas that is the gas discharged from the fuel cell 3 can be used. In this case, hydrogen is supplied from the reforming reaction chamber 31 and the removal reaction chamber 35 via the fuel cell. At this time, carbon dioxide generated in the removal reaction chamber 35 may be supplied together, or only hydrogen may be extracted from the product and supplied. Similarly to oxygen used for the oxidation reaction in the removal reaction chamber 35, oxygen contained in this air is used by taking in ambient air. The combustion exhaust gas, which is a product generated by this combustion reaction, is discharged to the outside through the sixth flow path 56. Thus, since the reformer combustion chamber 30 reuses unreacted hydrogen in the off-gas discharged from the fuel cell 3, it takes time to burn, but at the time of starting the fuel cell system 2, That is, before the hydrogen is supplied to the fuel cell 3, the reforming reaction chamber 31 can be heated to such an extent that the heater 48 promptly causes a reforming reaction, so that the fuel cell 3 can generate electricity quickly.

  Further, in the remover combustion chamber 34, heat for promoting the oxidation reaction in the removal reaction chamber 35 is generated. Further, the heat generated in the remover combustion chamber 34 is propagated to the substrate internal flow path 50. Thereby, the raw material flowing down the substrate internal flow path 50 is heated. A fluid containing hydrogen and oxygen is supplied to the remover combustion chamber 34 as a raw material through the seventh flow path 57. Hydrogen combusted in the remover combustion chamber 34 is hydrogen remaining in the fuel cell 3 without causing an electrochemical reaction among hydrogen contained in the products generated through the reforming reaction chamber 31 and the removal reaction chamber 35. It is possible to utilize unreacted hydrogen in the off-gas. In this case, hydrogen is supplied from the reforming reaction chamber 31 and the removal reaction chamber 35 via the fuel cell 3. At this time, carbon dioxide generated in the removal reaction chamber 35 may be supplied together, or only hydrogen may be extracted from the product and supplied. Similarly to oxygen used for the oxidation reaction in the removal reaction chamber 35, oxygen contained in this air is used by taking in ambient air. The combustion exhaust gas that is a product generated by this combustion reaction is discharged to the outside through the eighth flow path 58. In this way, the remover combustion chamber 34 reuses unreacted hydrogen in the off-gas discharged from the fuel cell 3, and thus it takes time to burn, but when the fuel cell system 2 is started, that is, Before the hydrogen is supplied to the fuel cell 3, the removal reaction chamber 35 can be heated to such an extent that the heater 49 quickly causes the carbon monoxide removal reaction, so that the fuel cell 3 can quickly generate power.

  In the initial stage of operation of the reactor 1, it is difficult for the combustion reaction in the reformer combustion chamber 30 and the remover combustion chamber 34 to occur, and heaters 48 and 49 are provided to assist this. Therefore, the heaters 48 and 49 are operated at least at the beginning of the operation of the reaction apparatus 1, but may be operated after that. The heaters 48 and 49 are provided in regions where the reformer combustion chamber 30 and the remover combustion chamber 34 are provided, respectively, when projected onto a plane perpendicular to the third direction z. Although the heaters 48 and 49 may be provided on one side in the thickness direction with respect to the substrate internal flow path 50, in the present embodiment, the heaters 48 and 49 are provided on the other side in the thickness direction with respect to the substrate internal flow path 50.

  According to this embodiment, since the reaction apparatus 1 includes the reformer 4 and the CO remover 5, the reforming reaction at a high temperature in the reformer 4 and the CO removal reaction at a low temperature in the CO remover 5. And can be done. The reformer 4 and the CO remover 5 are only connected via the connecting portion 6 whose width in the second direction y is narrower than the width of the reformer 4 and the CO remover 5 in the second direction y. Since there is little mutual heat transfer, it can be made less susceptible to thermal influences, and the chemical reaction at a high temperature in the reformer 4 and the chemical reaction at a low temperature in the CO remover 5 are preferably realized. be able to. Further, the reformer 4 is configured by combining the ceramic region 11 and the metal reformer lid 15, and the CO remover 5 is configured by combining the ceramic region 12 and the remover lid 16. . Ceramics are excellent in heat resistance and corrosion resistance, and have a low thermal conductivity compared to metals, silicon, etc., so by using ceramic regions 11 and 12, heat resistance and corrosion resistance are excellent, and it is difficult to leak heat to the outside. A suitable reactor can be realized. Moreover, the metal is excellent in workability and can form a complicated shape easily. Therefore, by combining the ceramic regions 11, 12 with the reformer lid 15 and the remover lid 16, the complex shape is excellent in heat resistance and corrosion resistance, hardly leaks heat to the outside, and easily promotes a chemical reaction. A suitable reaction apparatus having an internal structure having the above can be realized.

  In the present embodiment, both the reformer 4 and the CO remover 5 are configured by combining the ceramic regions 11, 12, the reformer lid body 15 and the remover lid body 16, which is more preferable. A reactor can be realized. Even if any one of the reformer 4 and the CO remover 5 is configured by combining a ceramic substrate and a metallic part, a suitable reaction apparatus can be realized.

  Further, the ceramic substrate 14 is formed by sintering a material having a plurality of layer structures, and is formed by sintering in a state in which the heaters 48 and 49 are sandwiched between the materials before sintering. Since the ceramic substrate 14 can be manufactured with the built-in 49, the heaters 48 and 49 can be built in at the same time when the ceramic substrate 14 is formed, thereby reducing the number of manufacturing steps and facilitating the manufacturing. And since the ceramic substrate 14 is excellent in heat retention compared with a metal, the heat | fever of the heaters 48 and 49 can be thermally radiated efficiently.

  A reformer reaction chamber 31 and a reformer combustion chamber 30 are adjacent to the reformer 4 via a reformer partition wall 26. As a result, the heat generated in the reformer combustion chamber 30 can be easily supplied to the reforming reaction chamber 31. In addition, the CO remover 5 is adjacent to a removal reaction chamber 35 and a remover combustion chamber 34 via a remover partition wall 28. Thus, the heat generated in the remover combustion chamber 34 can be easily supplied to the removal reaction chamber 35. Therefore, when the raw material is chemically reacted in the reforming reaction chamber 31 and the removal reaction chamber 35, heat can be efficiently supplied to the raw material.

  Reformer fins 25 that are joined to the reformer partition walls 26 to form flow paths in the reforming reaction chamber 31 are provided. Thus, the reformer fin 25 joined to the reformer partition wall 26 is easy to transfer heat generated in the reformer combustion chamber 30 as a heat generating part through the reformer partition wall 26, By forming the flow path, heat can be efficiently supplied to the raw material in the flow path. Also, a remover fin 27 that is joined to the remover partition wall 28 to form a flow path in the removal reaction chamber 35 is provided. In this way, the remover fin 27 joined to the remover partition wall 28 allows heat generated in the remover combustion chamber 34, which is a heat generating part, to be easily transmitted through the remover partition wall 28, and this fin forms a flow path. By doing so, heat can be efficiently supplied to the raw material in the flow path.

  In the present embodiment, since the reformer fins 25 and the remover fins 27 are both formed on the partition walls, a more suitable reaction apparatus can be realized. Even if any one of the reformer fin 25 and the remover fin 27 is formed on the partition wall, a suitable reaction apparatus can be realized.

  Furthermore, the reformer fins 25 are separated from the inner surface defining the reformer 4 excluding the surface of the reformer partition wall 26 of the reformer 4, for example, the reformer lid 15. This makes it difficult for heat to be transmitted from the reformer fin 25 to the members forming the reformer 4 other than the reformer partition wall 26, and prevents heat from leaking to the outside. Furthermore, the distance between the reformer fin 25 and the reformer lid 15 is preferably 0.05 mm or more and 0.3 mm or less. Thereby, the effect that the above-described heat leaks to the outside can be sufficiently exhibited.

  The remover fins 27 are separated from the inner surface defining the CO remover 5 excluding the surface of the remover partition wall 28 of the CO remover 5, for example, the remover lid 16. This makes it difficult for heat to be transmitted from the remover fins 27 to the members forming the CO remover 5 other than the remover partition wall 28, and prevents heat from leaking to the outside. Further, the distance between the remover fin 27 and the remover lid body 16 is preferably 0.05 mm or more and 0.3 mm or less. Thereby, the effect that the above-described heat leaks to the outside can be sufficiently exhibited.

  Since the fin is joined to the partition wall by spot welding, the fin can be easily provided on the partition wall.

  A substrate internal flow path 50 through which a fluid related to a chemical reaction in the reformer 14 and the CO remover 15 flows is formed inside the ceramic substrate 14, and a fluid related to the chemical reaction, for example, hydrogen flows down the flow path 50. By configuring to do so, it is possible to perform processing including pretreatment on the fluid related to the chemical reaction. Although this process is not specifically limited, If an example is given, it will be pre-processing, such as preheating and vaporization, for example.

  The ceramic substrate 14 is formed by laminating a plurality of ceramic layers. Such a ceramic substrate 14 is formed by laminating the materials of the ceramic layers and sintering them. Therefore, by forming grooves, holes, etc. in the material of each ceramic layer, laminating and sintering, it is possible to realize a ceramic substrate in which a flow path that is tightly partitioned from the outside is formed inside. .

  In the reaction apparatus 1, the ceramic regions 11, 12, and 13 of the reformer 4, the CO remover 5, and the connecting portion 6 are formed of a monolithic ceramic substrate 14. As a result, the number of parts can be reduced, the assembly can be facilitated, and high strength can be obtained. Moreover, the ceramic substrate 14 has a narrow portion constituting the connecting portion 6 in each wide portion constituting the reformer 4 and the CO remover 5. In this way, the cross-sectional area of the connecting portion 6 that connects the reformer 4 and the CO remover 5 can be reduced. Therefore, the heat transfer between the reformer 4 and the CO remover 5 can be kept small.

  FIG. 11 is a cross-sectional view of the ceramic substrate 14 as seen from the section line S11-S11 in FIG. FIG. 12 is a perspective view showing the ceramic substrate 14 in a state where the reformer bonding member 18 and the remover bonding member 20 are provided when viewed from the other side in the thickness direction z of the ceramic substrate 14. Among the laminated ceramic layers of the ceramic substrate 14, the layers in contact with the upper and lower surfaces of the heaters 48 and 49 are peripheral regions where the distance between the reformer 4 and the CO remover 5 is connected to the connecting portion 6. 71 and 73 (hereinafter, also referred to as “connecting portion peripheral region”) are as long as the distance L1 and are far from the connecting portion 6, specifically, the connecting portion peripheral regions 71 and 73 of the reformer 4 and the CO remover 5. In other areas, the recesses 46 and 46 are provided so as to be set to be equal to the distance L2 between the reformer 4 and the CO remover 5 in the layer above the upper layer in contact with the heaters 48 and 49 and shorter than the distance L1. It has been. As a result, of the remaining region excluding the connecting portion peripheral region 71 of the reformer 4, the projecting portion 90 projecting toward the CO remover 5 in the end facing region 80 facing the CO remover 5 in the second direction y. Is formed. Each concave portion 46 provided in the connection portion peripheral region 71 of the reformer 4 has a radius of curvature of the first curved portion 85 connected to the connection portion 6 relative to that of the second curved portion 86 connected to the protruding portion 90. It is formed to be smaller.

  By providing the recess 46, the distance L1 between the reformer 4 and the CO remover 5 in the connecting portion peripheral regions 71 and 73 is the second of the remaining regions excluding the connecting portion peripheral regions 71 and 73. It becomes longer than the distance L2 between the reformer 4 and the CO remover 5 in the end facing regions 80 and 81 facing each other in the direction y. The “distance between the reformer 4 and the CO remover 5 in the connection portion peripheral regions 71 and 73” refers to the remover ceramic region of the recess 46 provided in the connection portion peripheral region 71 of the reformer ceramic region 11. 12 is a distance farthest from the surface portion facing the reformer ceramic region 11 in the connection portion peripheral region 73 of the remover ceramic region 12 in the surface portion facing 12. The “distance between the reformer 4 and the CO remover 5 in the end facing regions 80 and 81” refers to the remover ceramic of the protrusion 90 formed in the end facing region 80 of the reformer ceramic region 11. It is the distance between the surface portion facing the region 12 and the surface portion facing the reformer ceramic region 11 in the end portion facing region 81 of the remover ceramic region 12.

  Due to such a configuration, the thickness in the third direction z of the peripheral region 71 connected to the connecting portion 6 in the reformer ceramic region 11 of the ceramic substrate 14 is the other region in the reformer ceramic region 11. For example, it is thinner than the thickness of the central region 72 in the third direction z. Therefore, in the ceramic layer in contact with the heaters 48 and 49, the dimensions of the reformer ceramic region 11 are shortened in the first direction x, and the dimensions of the connecting portion ceramic region 13 are relatively long in the first direction x. Further, the reformer ceramic region 11 has a cross-sectional area in a plane parallel to the second direction y and the third direction z in the connecting portion peripheral region 71, that is, a cross-sectional area in the thickness direction of the reformer ceramic region 11 is the center. Since it is set to be smaller than the cross-sectional area in the thickness direction in the region 72, the heat of the heater 48 of the reformer 4 heated to a higher temperature than the heater 49 of the CO remover 5 and the burner combustion of the CO remover 5. The heat of the reformer combustion chamber 30 of the reformer 4 that is heated to a higher temperature than the chamber 34 can be prevented from propagating to the CO remover 5 through the connecting portion ceramic region 13.

  Moreover, the layer which touches each upper and lower surface of the heaters 48 and 49 among the laminated ceramic layers of the ceramic substrate 14 is not limited to the structure shown in FIG. 11, but may be as shown in FIG. In other words, the distance between the reformer 4 and the CO remover 5 is a portion close to the connecting portion 6, that is, the distance L3 in the connecting portion peripheral regions 71 and 73, and is a portion far from the connecting portion 6, specifically an end portion. In the opposed regions 80 and 81, the reforming is performed so as to be set equal to the distance L2 (shorter than the distance L3) between the reformer 4 and the CO remover 5 in the layer above the upper layer in contact with the heaters 48 and 49. Recessed ceramic region 11 may be provided with recesses 46 and 46, and remover ceramic region 12 may be provided with recesses 47 and 47. By providing the recess 46 in the reformer ceramic region 11, a protruding portion 90 is formed in the same manner as shown in FIG. 11 described above, and by providing the recess 47 in the remover ceramic region 12, the CO remover 5 A protruding portion 91 that protrudes toward the reformer 4 is formed in the end facing region 81. Each concave portion 47 provided in the connecting portion peripheral region 73 of the CO remover 5 is such that the radius of curvature of the first curved portion 87 connected to the connecting portion 6 is relative to the radius of curvature of the second curved portion 88 connected to the protruding portion 91. It is formed to be smaller.

  The reformer ceramic region 11 is provided with the recesses 46 and 46, and the remover ceramic region 12 is provided with the recesses 47 and 47, so that the reformer 4 and the CO remover 5 in the connection portion peripheral regions 71 and 73 are connected. The distance L3 is longer than the distance L2 between the reformer 4 and the CO remover 5 in the end facing regions 80 and 81 among the remaining regions excluding the connecting portion peripheral regions 71 and 73. For this reason, the thickness in the third direction z of the peripheral region 71 connected to the connecting portion 6 in the reformer ceramic region 11 of the ceramic substrate 14 is the other region in the reformer ceramic region 11, for example, the central region 72. The thickness in the third direction z of the peripheral region 73 connected to the connecting portion 6 in the remover ceramic region 12 of the ceramic substrate 14 is smaller than the thickness in the third direction z of the ceramic substrate 14. For example, the thickness of the central region 74 in the third direction z. Therefore, in each ceramic layer in contact with the upper and lower sides of the heaters 48 and 49, the dimensions of the reformer ceramic region 11 and the remover ceramic region 12 are shortened in the first direction x, and the dimensions of the connecting ceramic region 13 are relatively small. It becomes longer in the first direction x. The reformer ceramic region 11 has a cross-sectional area in a plane parallel to the second direction y and the third direction z in the connecting portion peripheral region 71, that is, a cross-sectional area in the thickness direction of the reformer ceramic region 11 is the central region 72. And the remover ceramic region 12 is a cross-sectional area in a plane parallel to the second direction y and the third direction z in the connecting portion peripheral region 73, that is, the remover ceramic region. 12 is set to be smaller than the cross-sectional area in the thickness direction in the central region 74, the heater 48 of the reformer 4 heated to a higher temperature than the heater 49 of the CO remover 5. Heat and heat of the reformer combustion chamber 30 of the reformer 4 heated to a higher temperature than the remover combustion chamber 34 of the CO remover 5 are propagated to the CO remover 5 through the connecting ceramic region 13. The It is possible to win.

  In the above description, in the reformer 4 or the reformer 4 and the CO remover 5, a recess is provided in the ceramic region in the vicinity of the connecting portion 6 to reduce the cross-sectional area in the vicinity of the connecting portion 6 and the length of the connecting portion 6. The temperature difference between the reformer 4 and the CO remover 5 can be easily maintained by increasing the length of the CO. Similarly, only the CO remover 5 is provided with a recess in the ceramic region in the vicinity of the connection portion 6, and the connection portion The cross-sectional area in the vicinity of 6 may be reduced and the length of the connecting portion 6 may be increased.

  A narrow portion in the ceramic substrate 14, that is, a portion connected to at least each wide portion of the connecting portion 6, that is, a portion connected to the reformer 4 and the CO remover 5 is formed in a concave curved surface so as not to have corners. And smoothly connected to the outer surface of each wide portion. As a result, when an external force is applied to the ceramic substrate 14, stress can be dispersed so as not to concentrate at the connection portions between the wide portions and the narrow portions, and the strength of the ceramic substrate 14 can be increased.

  Further, when the ceramic regions 11 and 12 made of materials having different characteristics such as thermal expansion coefficient, the reformer lid 15 and the remover lid 16 are combined, the ceramic regions 11 and 12 and the reformer lid 15 and the removal are removed. Joining members 18 and 20 are used in order to join the container lid 16 well. By using the joining members 18 and 20 in this manner, the ceramic region and the metal part can be easily and firmly joined.

  The thermal expansion coefficient of the joining members 18 and 20 is between the thermal expansion coefficient of the reformer lid body 15 and the remover lid body 16 and the thermal expansion coefficient of the ceramic regions 11 and 12. Therefore, compared with the thermal stress which generate | occur | produces in the junction part at the time of directly joining the ceramic area | regions 11 and 12, the modifier lid | cover 15 and the remover lid | cover 16, it joins the ceramic area | regions 11 and 12 and the joining members 18 and 20. , The reformer lid body 15 and the remover lid body 16 and the thermal stress generated at the joint portion between the joint members 18 and 20 can be kept small. Therefore, the bonding strength between the ceramic region and the metal member can be increased.

  The thermal expansion coefficient of the support bases 29 and 33 is between the thermal expansion coefficient of the partition walls 26 and 28 and the thermal expansion coefficient of the ceramic regions 11 and 12. Therefore, compared with the thermal stress generated in the joint portion when the ceramic regions 11 and 12 and the partition walls 26 and 28 are directly joined, the joint portion between the ceramic regions 11 and 12 and the support bases 29 and 33, the partition walls 26 and 28 and the support. The thermal stress generated at the joint between the bases 29 and 33 can be kept small. Therefore, the bonding strength between the ceramic region and the partition wall can be increased.

  The reformer combustion chamber 30 is formed inwardly spaced from the reformer joint member 18. As a result, the reformer combustion chamber 30 is insulated and formed with respect to the reformer joining member 18, and the heat generated in the reformer combustion chamber 30 can be made difficult to leak to the outside. Further, the reformer combustion chamber 30 is formed away from the reformer joining member 18, thereby joining the reformer ceramic region 11 and the reformer lid 15 via the reformer joining member 18. Sometimes, it is possible to prevent external force from being applied to the members forming the reformer combustion chamber 30. Similarly to the reformer combustion chamber 30, the remover combustion chamber 34 is also insulated from the remover joining member 20, and heat generated in the remover combustion chamber 34 can be prevented from leaking to the outside. It is possible to prevent external force from being applied to the member forming the remover combustion chamber 34.

  On the inner side of the joining members 18 and 20, the surface of the ceramic substrate 14 protrudes in a convex shape. As a result, the thickness direction dimensions of the reformer combustion chamber 30 and the remover combustion chamber 34 can be reduced, and the raw material can easily come into contact with the inner surfaces that define the reformer combustion chamber 30 and the remover combustion chamber 34. Therefore, by attaching the catalyst to the inner surfaces that define the reformer combustion chamber 30 and the remover combustion chamber 34, the catalyst can be easily contacted and the reaction efficiency can be increased. Moreover, it is not necessary to reduce the thickness of the joining members 18 and 20, and the strength of the joining members 18 and 20 is prevented from being lowered.

  The joint portion between the ceramic substrate 14 and the joint members 18 and 20 is recessed. As a result, the thickness direction dimensions of the reformer combustion chamber 30 and the remover combustion chamber 34 can be reduced, and the raw material can easily come into contact with the inner surfaces that define the reformer combustion chamber 30 and the remover combustion chamber 34. Therefore, by attaching the catalyst to the inner surfaces that define the reformer combustion chamber 30 and the remover combustion chamber 34, the catalyst can be easily contacted and the reaction efficiency can be increased. Moreover, it is not necessary to reduce the thickness of the joining members 18 and 20, and the strength of the joining members 18 and 20 is prevented from being lowered.

  The reformer combustion chamber 30 and the remover combustion chamber 34 that are formed inwardly spaced from the joining members 18, 20 are formed on the ceramic substrate 14 on the inner side of the joining members 18, 20. It is configured by joining partition walls via 33. With such a configuration, the reformer combustion chamber 30 and the remover combustion chamber 34 can be formed away from the joining members 18 and 20 inward.

  The height dimension of the partition support bases 29 and 30 is smaller than the height dimension of the connection members 18 and 20. As a result, the thickness direction dimensions of the reformer combustion chamber 30 and the remover combustion chamber 34 can be reduced, and the raw material can easily come into contact with the inner surfaces that define the reformer combustion chamber 30 and the remover combustion chamber 34. Therefore, by attaching the catalyst to the inner surfaces that define the reformer combustion chamber 30 and the remover combustion chamber 34, the catalyst can be easily contacted and the reaction efficiency can be increased. Moreover, it is not necessary to reduce the thickness of the joining members 18 and 20, and the strength of the joining members 18 and 20 is prevented from being lowered.

  The reformer 4 is a reaction unit that performs a chemical reaction that generates hydrogen. Therefore, in the reactor 1, hydrogen can be generated. The CO remover 5 is a reaction unit that performs a reaction for removing carbon monoxide. Therefore, by using the reactor 1, it is possible to prevent carbon monoxide from being supplied to the supply destination.

  Furthermore, since the fuel cell 3 can generate electric power using the reaction product generated by the reaction device 1 as a fuel, the raw material that is easier to handle than the fuel of the fuel cell 3 is reacted by the reaction device 1, The reaction product can be used as fuel for the fuel cell 3. Therefore, by storing a raw material that is easier to handle than the fuel of the fuel cell 3, it is possible to generate power in the fuel cell 3 and realize a fuel cell system that is easy to handle.

  FIG. 13 is a perspective view showing an example of an electronic device 70 on which the fuel cell system 2 is mounted. FIG. 14 is a block diagram illustrating an electrical configuration of the electronic device 70. The electronic device 70 includes an operation unit 62 and a display unit 63 provided in the housing 61, an operation control unit 64 that controls display contents of the display unit 63 based on input information from the operation unit 62, And a fuel cell system 3 that supplies power to the operation unit 62, the display unit 63, and the operation control unit 64. Such an electronic device 3 is an electronic computer used for arithmetic operations, for example.

  Further, the electronic device on which the fuel cell system 2 is mounted is not limited to the electronic computer as shown in FIGS. 13 and 14, but a digital camera, a mobile phone device, a notebook computer, a wristwatch, a PDA, and other electronic devices. It may be. The fuel cell system 2 has a configuration excluding at least the raw material container 60 provided inside the casing of the electronic device, and the raw material container 60 is detachably provided at a portion excluding the raw material container 60 of the electronic device. The raw material container 60 may also be provided inside the housing of the electronic device. When the raw material container 60 is attached to a portion other than the raw material container 60 of the electronic device, the raw material in the raw material container 60 can be supplied to the reaction apparatus 1 by a pump.

  According to the above embodiment, the fuel cell system 2 can generate and supply the electric power necessary for the operation unit 62, the display unit 63, and the operation control unit 64. In this way, it is possible to realize an electronic device that generates and drives the fuel cell system.

  Moreover, the electronic device which is not provided with the operation part 62 and the display part 63 may be sufficient, and the electronic device which generate | occur | produces and drives with a fuel cell system by mounting the fuel cell system 2 is realizable.

  The above-described embodiment is merely an example of the present invention, and the configuration can be changed. For example, the reaction apparatus 1 may be used for reactions other than the reaction that generates hydrogen.

  Further, in the above-described embodiment, the reactor 1 removes the product generated by the reaction in the reforming reaction chamber 31 that is the high temperature reaction chamber of the reformer 4 that is the high temperature reaction section, and removes CO that is the low temperature reaction section. It is comprised so that it may guide and react to the removal reaction chamber 35 which is a low temperature reaction chamber of the vessel 5. The reaction apparatus of this invention is not limited to this, For example, you may comprise so that the product produced | generated by the reaction in the low temperature reaction chamber of a low temperature reaction part may be guide | induced to the high temperature reaction chamber of a high temperature reaction part, and may be made to react.

  In the above-described embodiment, the reformer lid 15 and the remover lid 16 are made of the same material, but are not limited to this, and may be made of different materials. When the reformer lid 15 and the remover lid 16 are made of different materials, the thermal expansion coefficient of the reformer joint member 18 is the thermal expansion coefficient of the reformer lid 15 and the heat of the reformer ceramic region 11. The thermal expansion coefficient of the remover joining member 20 is selected to be a value between the thermal expansion coefficient of the remover lid 16 and the thermal expansion coefficient of the remover ceramic region 12.

  In the above-described embodiment, the reformer joining member 18 is interposed between the reformer lid 15 and the reformer ceramic region 11. However, the present invention is not limited to this, and the reformer lid 15 Further, one or a plurality of joining members may be interposed between any one or both between the reformer joining member 18 and between the reformer joining member 18 and the reformer ceramic region 11. Good. Further, a remover joining member 20 is interposed between the remover lid 16 and the remover ceramic region 12, but is not limited thereto, and between the remover lid 16 and the remover joining member 20, and One or more joining members may be interposed between one or both of the remover joining member 20 and the remover ceramic region 12.

  In the above-described embodiment, each reformer fin 25 is joined to the reformer partition wall 26 by spot welding. However, the present invention is not limited to this, and other joining methods such as bonding or brazing with an adhesive are used. It may be joined. Each remover fin 27 is joined to the remover partition wall 28 by spot welding, but is not limited thereto, and may be joined by other joining methods such as adhesion or brazing with an adhesive.

  In the above-described embodiment, each reformer fin 25 and the reformer partition wall 26 are configured by separate members, but are not limited to this, and may be an integrated structure. Moreover, although each remover fin 27 and the remover partition 28 are comprised by a separate member, it is not limited to this, An integral structure may be sufficient.

  In the above-described embodiment, the reformer lid 15 is joined to the reformer ceramic region 11 via the reformer joining member 18, but is not limited to this, and the reformer lid 15 is placed via the reformer joining member 18. Instead, it may be directly joined to the reformer ceramic region 11. Further, the remover lid 16 is joined to the remover ceramic region 12 via the remover joining member 20, but is not limited to this, and is joined directly to the remover ceramic region 12 without going through the remover joining member 20. May be.

  The substrate internal flow path 50 may or may not meander. Further, the dimensions of the reformer 4 and the CO remover 5 are not limited to the present embodiment. For example, the second direction y dimension of the reformer 4 and the CO remover 5 may be different from each other, and the area of the reformer 4 in plan view and the area of the CO remover 5 in plan view are the same, The reformer 4 may be larger.

It is sectional drawing which shows the reaction apparatus 1 of one Embodiment of this invention. 1 is a perspective view showing a reaction device 1. FIG. 1 is a block diagram of a fuel cell system 2 including a reaction device 1. It is a perspective view which shows the ceramic substrate 14 in the state in which the reformer joining member 18, the remover joining member 20, etc. were provided. FIG. 3 is a perspective view showing a reformer lid body 15. It is a perspective view which shows the remover cover body 16. FIG. It is a perspective view which shows the reformer partition 26 in the state in which the reformer fin 25 which is a heat-diffusion member was provided. It is a perspective view which shows the remover partition 28 in the state in which the remover fin 27 which is a heat-diffusion member was provided. FIG. 2 is a perspective view showing the reaction apparatus 1 with the reformer lid 15 and the remover lid 16 removed. It is sectional drawing of the ceramic substrate 14 seen from cut surface line S10-S10 of FIG. It is sectional drawing of the ceramic substrate 14 seen from cut surface line S11-S11 of FIG. FIG. 3 is a perspective view showing the ceramic substrate 14 in a state where the reformer bonding member 18 and the remover bonding member 20 are provided when viewed from the other side in the thickness direction z of the ceramic substrate 14. It is sectional drawing of the ceramic substrate 14 seen from cut surface line S11-S11 of FIG. 1 in a modification. It is a perspective view which shows an example of the electronic device 70 with which the fuel cell system 2 is mounted. 3 is a block diagram showing an electrical configuration of an electronic device 70. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reactor 2 Fuel cell system 3 Fuel cell 4 Reformer 5 CO remover 6 Connecting part 11 Reformer ceramic area 12 Remover ceramic area 13 Connecting part ceramic area 14 Ceramic substrate 15 Reformer lid 16 Remover lid Body 17, 19 Open end 18 Reformer joint member 20 Remover joint member 25 Reformer fin 26 Reformer partition wall 27 Remover fin 28 Remover partition wall 29 Reformer partition wall support base 30 Reformer combustion chamber 31 Reformation reaction chamber 32 Reformer partition member 33 Remover partition support base 34 Remover combustion chamber 35 Removal reaction chamber 36 Remover partition member 37, 38, 45 End 40 Auxiliary fin 44 Auxiliary fin support base 48, 49 Heater 50 Substrate internal flow path 51 1st flow path 52 2nd flow path 53 3rd flow path 54 4th flow path 55 5th flow path 56 6th flow path 57 7th flow path 58 8th flow Path 60 Raw material container 61 Case 62 Operation unit 63 Display unit 64 Operation control unit 70 Electronic device

Claims (9)

A high temperature reaction section in which a high temperature reaction chamber is formed;
A low-temperature reaction part in which a low-temperature reaction chamber in which a chemical reaction is performed at a lower temperature than the high-temperature reaction chamber is formed;
A connecting portion provided in a ceramic region in which a communication path connecting the high temperature reaction portion and the low temperature reaction portion and communicating the high temperature reaction chamber and the low temperature reaction chamber is formed;
With
A flow path is formed in the high temperature reaction chamber and the low temperature reaction chamber,
At least one of the high temperature reaction chamber and the low temperature reaction chamber has a side wall that partitions the flow path and is formed of a member having a higher thermal conductivity than the connecting portion.   The reactor according to claim 1, wherein the ceramic region is formed by laminating a plurality of ceramic layers.   The heat generating part further heats at least one of the high temperature reaction part and the low temperature reaction part, and the heat generation part includes a partition wall provided on at least one side of the high temperature reaction part and the low temperature reaction part, and the partition wall The reaction apparatus according to claim 1, wherein the reaction apparatus is formed in combination with a substrate having a thermal conductivity lower than that of the partition wall, which is provided opposite to the partition wall.   The reaction apparatus according to claim 1, wherein the side wall that is provided in at least one of the high temperature reaction chamber and the low temperature reaction chamber and partitions the flow path is a plurality of fins.   The reaction apparatus according to claim 1, wherein the high-temperature reaction section performs a reaction that generates hydrogen.   The reaction apparatus according to claim 1, wherein the low-temperature reaction unit performs a reaction for removing carbon monoxide. A reactor according to claim 1;
A fuel cell system comprising: a fuel cell that generates electric power using the reaction product generated by the reaction device as a fuel.   An electronic apparatus comprising the fuel cell system according to claim 7. An operation unit and a display unit provided in the housing;
An operation control unit for controlling display contents of the display unit based on input information from the operation unit;
An electronic apparatus comprising: the fuel cell system according to claim 7, which is housed in the housing and supplies power to the operation unit, the display unit, and the operation control unit.

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