JP2020099885A - Combustible material treatment apparatus, and combustible material treatment method - Google Patents

Abstract

To recover flammable gas which can be easily effectively used as an alternative for fossil fuel from a combustible material containing chlorine content and/or sulfur content at a low cost.SOLUTION: A combustible material treatment apparatus 1 comprises: a heater 22 which heats a combustible material W1 containing chlorine content and/or sulfur content in a non-oxidative environment; and a gas recovery apparatus 31 which recovers flammable gas G1 discharged from the heater 22, in which the heater 22, by heating an immobilizing material F1 containing alkaline metal and/or alkaline earth metal together with the combustible material W1, allows the chlorine content and/or the sulfur content contained in the combustible material W1 to react with alkaline metal and/or alkaline earth metal contained in the immobilizing material F1.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an apparatus and a method for heating and processing a combustible material containing a chlorine content and/or a sulfur content.

A combustible material refers to a substance that can be continuously burned (including a flame-retardant substance that burns slowly). When a combustible material is subjected to a heat treatment (pyrolysis) in a non-oxidizing atmosphere, a combustible gas (carbon monoxide gas, hydrocarbon gas, hydrogen gas, etc.) is generated. Since the generated combustible gas has calories, it is preferable to use it as a substitute for fossil fuel (fuel substitute).

However, in the case of thermally decomposing a combustible material containing chlorine, it is difficult to effectively use the combustible gas generated by this thermal decomposition as a substitute for fossil fuel in a combustion facility. That is, when a combustible material containing a chlorine component is thermally decomposed, acidic and highly corrosive hydrogen chloride is released by the thermal decomposition and is mixed into the combustible gas. As a result, the reactor and pipes that come in contact with this flammable gas are likely to deteriorate, and this hydrogen chloride may be released into the atmosphere from the combustion equipment, which may lead to air pollution. You will need it.

Therefore, in Patent Document 1 below, the combustible waste is heated in a carbonization furnace, the combustible gas discharged from the carbonization furnace is washed with alkaline water, and the combustible gas from which chlorine has been removed is burned by this washing. It is described to be supplied to facilities and used as a substitute for fossil fuels.

However, in the technique described in Patent Document 1 below, there is a problem that the treatment for removing the chlorine content from the combustible gas (cleaning with alkaline water) requires a great cost. That is, in the technique described in Patent Document 1 below, a combustible gas that is easy to effectively use as a substitute for fossil fuel (a combustible gas that contains almost no chlorine) is recovered from a combustible containing chlorine. A great deal of cost is required for processing.

On the other hand, even when heat-treating (pyrolysis) a combustible material containing sulfur in a non-oxidizing atmosphere, it is easy to effectively use it as a substitute for fossil fuel (combustible gas containing almost no sulfur content). It is desirable to recover gas) at low cost.

Japanese Patent No. 4899484

Therefore, an object of the present invention is to recover, from a combustible material containing a chlorine content and/or a sulfur content, a combustible gas that can be effectively used as a substitute for a fossil fuel at low cost.

In order to solve the above problems, a combustible substance processing device according to the present invention is a heating device for heating a combustible substance containing a chlorine content or/and a sulfur content in a non-oxidizing atmosphere, and a combustible gas discharged from the heating device. And a gas recovery device for recovering the gas, wherein the heating device heats an immobilizing material containing an alkali metal or/and an alkaline earth metal together with the combustible substance, thereby the chlorine content in the combustible substance or/ And a sulfur content and the alkali metal and/or alkaline earth metal contained in the immobilizing material are reacted.

According to the present invention, the chlorine content and/or the sulfur content (hereinafter referred to as “chlorine content”) contained in the combustible material and the alkali metal or/and the alkaline earth metal contained in the immobilization material (hereinafter referred to as “alkali metal”). Etc.)) can be reacted with a heating device. As a result, chlorine content or the like contained in the combustible material supplied to the heating device can be reacted with an alkali metal or the like to form an inorganic solid matter, and the combustible gas discharged from the heating device contains the chlorine content or the like. It can be prevented. For this reason, it is possible to recover the combustible gas that can be effectively used as a fuel alternative without providing a step of desalting or/and desulfurizing the combustible gas discharged from the heating device. Therefore, it is possible to recover at low cost a combustible gas that can be effectively used as a fuel substitute from combustible substances containing chlorine and the like.

Further, in the above-described combustible substance processing device, it is preferable that the heating device heats the combustible substance and the immobilizing material at 900° C. or less. As a result, it is possible to more effectively prevent the combustible gas discharged from the heating device from containing chlorine and the like. That is, when the heating temperature in the heating device exceeds 900° C., even if the chlorine content or the like reacts with the alkali metal or the like to form an inorganic solid, the inorganic solid is decomposed and hydrogen chloride is regenerated. Mix in flammable gas. However, by heating the combustible material and the immobilizing material in the heating device at 900° C. or lower, it is possible to avoid the decomposition of the inorganic solid matter generated by the reaction between the chlorine content and the alkali metal, and to decompose hydrogen chloride. Can be prevented from being generated again. Therefore, it is possible to prevent hydrogen chloride from mixing into the combustible gas due to the above-described decomposition, and to more effectively prevent the combustible gas discharged from the heating device from containing a chlorine component or the like.

Further, in the above-described combustible substance processing device, the gas recovery device includes a gas reforming device that heats and reforms the combustible gas discharged from the heating device to 1000° C. or more, and the gas reforming device. It is preferable to recover the combustible gas discharged from the.

As a result, it is possible to prevent troubles such as pipe clogging due to tar generation, and increase the utility value of the combustible gas recovered by the gas recovery device as a fuel substitute. This is because the combustible gas discharged from the heating device contains almost no chlorine, etc., so that the gas reforming device efficiently heats the combustible gas without heating the excess gas (hydrogen chloride gas). However, it is possible to efficiently reform (lighten) the combustible gas. If the heating temperature in the gas reformer is lower than 1000°C, heavy components such as tar contained in the combustible gas cannot be sufficiently decomposed (lightened).

In addition, it is preferable that the combustible substance processing apparatus further includes a water supply device that supplies water or/and steam to the heating device, and the heating device heats the water or/and steam together with the combustible material. As a result, the solid carbon content contained in the combustible material can be reacted with water, and the amount of carbon monoxide gas that is a combustible gas can be increased. Therefore, most of the carbon content contained in the combustible material can be contained in the combustible gas. Further, by reacting the solid carbon content contained in the combustible material with moisture, hydrogen gas, which is a combustible gas, can be generated. Therefore, it is possible to further increase the amount of combustible gas generated in the heating device and increase the amount of combustible gas that can be recovered in the gas recovery device.

Further, in the above-mentioned combustible substance processing device, the immobilization material may be waste or by-product containing abundant alkali metal and/or alkaline earth metal. Thereby, since the waste or by-product which is generally low in utility value is used as the immobilizing material, the cost required to secure the immobilizing material (raw material cost of the immobilizing material) can be kept low.

In addition, the combustible material treatment device further includes a solid material recovery device that recovers solid material remaining after the heating in the heating device, and the heating device includes the combustible material and the immobilization material at 500° C. or higher and 900° C. It can be heated below.

Thereby, the usability of the solid matter recovered by the solid matter recovery device can be enhanced. That is, when the heating temperature in the heating device is lower than 500° C., a part of the solid organic component contained in the combustible material changes into a tar shape. Therefore, there is a possibility that the tar-like organic components will be dense during heating of the combustible material, and the dense tar-like organic components will become a lump solid after the heating is completed. In this case, it is difficult to effectively use the lumpy solid matter even if it is collected by the solid matter collecting device. On the other hand, when the heating temperature in the heating device exceeds 900° C., a part of the solid inorganic component contained in the combustible material changes to a liquid state. For this reason, there is a possibility that the liquid inorganic components will be dense when the combustible material is heated, and the dense liquid inorganic components will become a lump solid after the heating is completed. In this case, it is difficult to effectively use the lumpy solid matter even if it is collected by the solid matter collecting device. Therefore, by recovering the solid matter generated by heating the combustible material and the immobilizing material at 500° C. or more and 900° C. or less, it is possible to prevent the organic content from becoming a lumpy solid material in the heating device, and to eliminate the inorganic content. Prevents lumpy solids. Thereby, the usability of the solid matter recovered by the solid matter recovery device can be enhanced.

Further, the combustible material treatment method according to the present invention, the combustible material containing chlorine content and/or sulfur content, and the immobilization material containing an alkali metal or/and an alkaline earth metal are both heated, Characterized in that the chlorine content and/or the sulfur content contained in and the alkali metal or/and alkaline earth metal contained in the immobilization material are reacted to recover the combustible gas generated by the heating. To do.

According to the present invention, the chlorine content or the like contained in the combustible material and the alkali metal or the like contained in the immobilizing material can be reacted by heating the combustible material and the immobilizing material. With this, it is possible to react chlorine content or the like contained in the combustible material with an alkali metal or the like to form an inorganic solid material, and it is possible to prevent the combustible gas generated by the heating from containing the chlorine content or the like. .. Therefore, the combustible gas that can be effectively used as a fuel alternative can be recovered without providing a step of desalting or/and desulfurizing the combustible gas generated by the heating. Therefore, it is possible to recover at low cost a combustible gas that can be effectively used as a fuel substitute from combustible substances containing chlorine and the like.

As described above, according to the present invention, it is possible to recover at low cost a combustible gas that can be effectively used as a substitute for a fossil fuel, from a combustible material containing a chlorine content and/or a sulfur content.

It is the whole lineblock diagram showing the combustible waste disposal equipment to which the combustible waste disposal equipment concerning the present invention is applied.

Next, modes for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram showing a combustible waste processing apparatus to which the combustible material processing apparatus according to the present invention is applied. As shown in the figure, the combustible waste treatment device 1 includes a pre-heat treatment device 11, a heat treatment device 21, a gas recovery device 31, a solids recovery device 41, and a fuel alternative utilization facility 51. ..

The heating pretreatment device 11 includes a waste supply device 12, a waste crushing device 13 that crushes the combustible waste W1 (combustible material) supplied from the waste supply device 12, and an immobilizing material supply device 14. An immobilizing material crushing device 15 for crushing the immobilizing material F1 supplied from the immobilizing material supplying device 14.

Here, the waste W1 contains an organic content (carbon content), a chlorine content, a sulfur content, and a heavy metal content. Further, the waste W1 can be, for example, waste plastic containing polyvinyl chloride or the like.

Further, the immobilization material F1 is a material containing an alkali metal and/or an alkaline earth metal. As the immobilizing material F1, a material containing Na content, Mg content, Ca content, or the like can be used. However, as the immobilizing material F1, it is preferable to use a material containing Ca (particularly calcium hydroxide), which has a low raw material cost, in order to keep the cost required for securing the immobilizing material F1 low. A material containing Ca other than calcium hydroxide may be used, for example, a material containing calcium oxide or calcium carbonate may be used.

In addition, wastes and factory by-products containing alkali metals and/or alkaline earth metals can be used as the immobilizing material F1, for example, fly ash and dust generated from incineration treatment, and generated in the cement burning process. Chlorine bypass dust etc. can be used. In this way, by using waste or factory by-product, which is generally low in utility value, as the immobilizing material F1, it is possible to keep the cost required to secure the immobilizing material F1 (raw material cost of the immobilizing material F1) low. it can.

The waste crushing device 13 is provided for discharging the crushed waste W2 by crushing the waste W1 supplied from the waste supply device 12. As the waste crushing device 13, for example, a shear crusher such as a biaxial crusher can be used. The immobilization material crushing device 15 is provided for discharging the crushed immobilization material F2 by crushing the immobilization material F1 supplied from the immobilization material supply device 14. As the immobilization material crushing device 15, for example, an impact crushing machine such as a hammer crusher can be used. Further, the crushed waste W2 and the crushed immobilization material F2 are mixed to form a mixture M.

The heat treatment device 21 includes a heating device 22, a water supply device 23 that supplies water L to the heating device 22, and a non-oxidizing gas supply device 24 that supplies a non-oxidizing gas I to the heating device 22.

The heating device 22 is provided to heat the crushed immobilization material F2 together with the crushed waste W2 (heat the mixture M). Further, the heating device 22 discharges the supply unit 22a to which the mixture M is supplied, the heating unit 22b that heats the mixture M supplied to the supply unit 22a, and the combustible gas G1 and the solid matter S1 generated by this heating. And a discharge unit 22c for discharging. As the heating device 22, for example, a rotary kiln or a fluidized bed furnace can be used.

Inside the heating part 22b, the mixture M is heated at 500° C. or higher and 900° C. or lower. Here, the inside of the heating unit 22b is heated by the non-oxidizing gas I supplied from the non-oxidizing gas supply device 24 so that the oxygen concentration (of the “oxygen occupying the inside of the heating unit 22b with respect to the “internal volume of the heating unit 22b” is The ratio of “volume” is maintained at 1% or less in a non-oxidizing atmosphere.

As a result, the organic components contained in the mixture M are thermally decomposed without burning inside the heating unit 22b. Further, since the mixture M is heated in a non-oxidizing atmosphere, it is possible to suppress the generation of extremely toxic dioxin. Further, inside the heating unit 22b, the chlorine content and the sulfur content contained in the mixture M react with the alkali metal and the alkaline earth metal also contained in the mixture M, so that the alkali metal and the alkaline earth metal Chlorides and sulfides are produced. Further, a heavy metal sulfide contained in the mixture M reacts with a sulfur content to generate a heavy metal sulfide.

Further, when the water L is supplied from the water supply device 23 inside the heating unit 22b, the carbon content contained in the mixture M and the water L react with each other to generate carbon monoxide gas and hydrogen gas.

The non-oxidizing gas supply device 24 supplies steam, nitrogen gas, carbon dioxide gas, argon gas or the like as the non-oxidizing gas I into the heating unit 22b.

The gas recovery device 31 further includes a gas reformer 32 that further heats and reforms (lightens) the flammable gas G1 discharged from the heating device 22, and oxygen that supplies the oxygen-containing gas O to the gas reformer 32. A contained gas supply device 33, a dust collector 34 that collects the combustible gas G2 discharged from the gas reforming device 32, and an attracting fan 35 that attracts the combustible gas G3 discharged from the dust collector 34. Prepare

The gas reforming device 32 heats the combustible gas G1 at 1000° C. or higher and 1200° C. or lower (preferably 1100° C. or lower) with an oxygen amount equal to or less than the theoretical oxygen required amount required for complete combustion, thereby converting the combustible gas G1 into the combustible gas G1. The carbon content (organic content) contained is partially burned. As a result, in the gas reforming device 32, the combustible gas G2 having a higher calorie (heat amount) than the combustible gas G1 is generated. The flammable gas G2 contains light components (carbon monoxide gas, methane gas, etc.) generated by decomposing the heavy hydrocarbons contained in the flammable gas G1.

The oxygen-containing gas supply device 33 is provided to supply the oxygen-containing gas O for partially burning the combustible gas G1 to the gas reforming device 32. Pure oxygen, air, or the like can be used as the oxygen-containing gas O.

The dust collector 34 collects carbon particles contained in the flammable gas G2 discharged from the gas reforming device 32 as dust D, and discharges the flammable gas G3. As the dust collector 34, a bag filter or a cyclone can be used.

The solid matter recovery device 41 temporarily removes the solid matter S1 which is the residue after heating the mixture M from the heating device 22 and the solid matter S2 taken out by the solid matter retrieval device 42. A solid substance storage device 43 for storing and a desalination/desulfurization device 44 for desalting/desulfurizing the solid substance S3 supplied from the solid substance storage device 43 are provided. A water washing device can be used as the desalination/desulfurization device 44, for example.

Here, the solid S1 is a mixture of an inorganic solid and an organic solid. The inorganic solids include chlorides and sulfides of alkali metals, chlorides and sulfides of alkaline earth metals, sulfides of heavy metals, and the like. In addition, the organic solids include carbides that have not become the flammable gas G1 among the organic components contained in the mixture M.

The fuel alternative utilization facility 51 can be, for example, a cement firing device, a power generation device, or the like. In the fuel substitute utilization facility 51, the combustible gas G3 discharged from the dust collector 34, the dust D collected by the dust collector 34, and the solid matter S4 discharged from the desalination/desulfurization device 44 are used as fuel substitutes. It

Next, the combustible material processing method according to the present invention will be described by taking the case of using the combustible waste processing apparatus 1 shown in FIG. 1 as an example.

First, the waste W1 is supplied to the waste crushing device 13 by the waste supply device 12, and the waste W1 is crushed in the waste crushing device 13. On the other hand, the immobilizing material F1 is supplied to the immobilizing material crushing device 15 by the immobilizing material supplying device 14, and the immobilizing material F1 is crushed in the immobilizing material crushing device 15.

Next, the crushed waste W2 discharged from the waste crusher 13 and the crushed immobilization material F2 discharged from the immobilization material crusher 15 are mixed to form a mixture M. On the other hand, the non-oxidizing gas supply device 24 supplies the non-oxidizing gas I to the inside of the heating unit 22b of the heating device 22 to maintain the inside of the heating unit 22b in a non-oxidizing atmosphere. Next, the mixture M is supplied to the supply unit 22a of the heating device 22, and the mixture M supplied to the supply unit 22a is conveyed to the heating unit 22b and heated by the heating unit 22b. At this time, the water L is supplied from the water supply device 23 to the inside of the heating unit 22b. In addition, the heating temperature of the mixture M in the heating unit 22b is 500° C. or higher and 900° C. or lower. As a result, the combustible gas G1 and the solid S1 are generated in the heating section 22b, and the combustible gas G1 is discharged from the discharge section 22c.

Further, the combustible gas G1 discharged from the discharge part 22c of the heating device 22 is supplied to the gas reforming device 32. On the other hand, the oxygen-containing gas O is supplied from the oxygen-containing gas supply device 33 to the gas reforming device 32. Thereby, in the gas reforming apparatus 32, the combustible gas G1 is heated to 1000° C. or higher and 1200° C. or lower to be reformed (lightened). Further, the dust collector 34 collects dust from the combustible gas G2 discharged from the gas reformer 32. Then, the combustible gas G3 discharged from the dust collector 34 is introduced into the fuel substitute utilization facility 51, and the combustible gas G3 is used as the fuel substitute in the fuel substitute utilization facility 51. Further, the dust D collected by the dust collector 34 is also used as a fuel substitute in the fuel substitute utilization equipment 51.

On the other hand, the solid matter S1 remaining in the heating unit 22b of the heating device 22 is conveyed to the discharge unit 22c, and the solid matter extracting device 42 takes out the solid matter S1 to the outside of the heating device 22. Further, the solid S2 taken out of the heating device 22 is stored in the solid storage device 43. Further, the solid material S3 is appropriately supplied from the solid material storage device 43 to the desalting/desulfurizing device 44, and the solid material S3 is desalted/desulfurizing in the desalting/desulfurizing device 44. Further, the solid matter S4 discharged from the desalination/desulfurization device 44 is supplied to the fuel substitute utilization equipment 51, and the solid matter S4 is used as a fuel substitute in the fuel substitute utilization equipment 51.

As described above, according to the above-described embodiment, the chlorine content contained in the waste W1 and the alkali metal contained in the immobilization material F1 can be reacted in the heating device 22. As a result, chlorine content or the like contained in the mixture M supplied to the heating device 22 can be reacted with an alkali metal or the like to form an inorganic solid matter, and the combustible gas G1 discharged from the heating device 22 can contain chlorine content or the like. Can be prevented from being included. Therefore, it is possible to recover the combustible gas G1 that can be effectively used as a fuel substitute without providing a step of desalting or desulfurizing the combustible gas G1 discharged from the heating device 22. Therefore, the combustible gas G1 that can be effectively used as a fuel alternative can be recovered from the waste W1 containing chlorine and the like at a low cost.

Further, according to the above-described embodiment, it is possible to more effectively prevent the combustible gas G1 discharged from the heating device 22 from containing chlorine and the like. That is, when the heating temperature in the heating device 22 exceeds 900° C., even if the chlorine content or the like reacts with the alkali metal or the like to form an inorganic solid matter, the inorganic solid matter is decomposed and the chlorine content-containing gas is reduced. Generate again. However, by heating the mixture M at 900° C. or lower in the heating device 22, it is possible to avoid the decomposition of the inorganic solid matter generated by the reaction between the chlorine content etc. and the alkali metal etc. Can be prevented from being generated again. Therefore, it is possible to prevent the gas containing chlorine and the like from being mixed into the combustible gas G1 due to the above-described decomposition, and to more effectively prevent the combustible gas G1 discharged from the heating device 22 from containing chlorine and the like. be able to.

Further, according to the above-described embodiment, the combustible gas G1 discharged from the heating device 22 is reformed (lightened) by the gas reforming device 32, thereby preventing troubles such as pipe clogging due to tar generation. Therefore, the utility value of the combustible gas G3 recovered by the gas recovery device 31 as a fuel alternative can be increased. This is because the combustible gas G1 discharged from the heating device 22 contains almost no chlorine and the like, and thus the gas reforming device 32 does not heat the excess gas (gas containing chlorine and the like) and is combustible. This is because the gas G1 can be efficiently heated and the flammable gas G1 can be efficiently reformed (made lighter). If the heating temperature in the gas reformer 32 is lower than 1000° C., heavy components such as tar contained in the combustible gas G1 cannot be sufficiently decomposed (lightened).

Further, according to the above-described embodiment, the solid carbon content contained in the mixture M can be reacted with water (water L), and the amount of carbon monoxide gas that is a combustible gas can be increased. Therefore, most of the carbon content contained in the mixture M can be contained in the combustible gas G1. Furthermore, by reacting the solid carbon content contained in the mixture M with water (water L), hydrogen gas that is a combustible gas can be generated. Therefore, the amount of the flammable gas G1 generated in the heating device 22 can be further increased, and the amount of the flammable gas G1 that can be recovered in the gas recovery device 31 can be increased.

Further, according to the above-described embodiment, it is possible to improve the usability of the solid matter S4 collected by the solid matter collecting device 41. That is, when the heating temperature in the heating device 22 is lower than 500° C., a part of the solid organic component contained in the mixture M changes into a tar shape. Therefore, when the mixture M is heated, the tar-like organic components may be dense, and the dense tar-like organic components may become a solid mass after the heating is completed. In this case, it is difficult to effectively use the lumped solid matter even if it is collected by the solid matter collection device 41. On the other hand, when the heating temperature in the heating device 22 exceeds 900° C., part of the solid inorganic component contained in the mixture M changes to a liquid state. Therefore, when the mixture M is heated, the liquid inorganic content may be dense, and the dense liquid inorganic content may become a solid mass after heating. In this case, it is difficult to effectively use the lumped solid matter even if it is collected by the solid matter collection device 41. Therefore, by collecting the solid S1 generated by heating the mixture M at 500° C. or higher and 900° C. or lower, it is possible to prevent the carbide from becoming a lump solid in the heating device 22 and to make the inorganic content a lump solid. Prevent becoming. Thereby, the usability of the solid matter S4 collected by the solid matter collecting device 41 can be enhanced.

In the above-described embodiment, the waste W1 containing chlorine, sulfur and heavy metal is used, but at least one of chlorine and sulfur may be contained.

Further, in the above-mentioned embodiment, when the fuel substitute utilization equipment 51 is a cement calcination device, it is particularly preferable to use a material containing Ca as the immobilizing material F1. As a result, the solid content S4 contains Ca (calcium hydroxide, calcium carbonate, etc.), and the Ca content contained in the solid S4 is used as a cement raw material in the cement firing device (fuel alternative utilization facility 51). be able to. Therefore, even if a large amount of Ca is used as the immobilizing material F1, the Ca is not wasted, and a large amount of Ca can be supplied to the heating device 22 as the mixture M.

Further, the Ca content used as the immobilizing material F1 acts as a catalyst in the thermal decomposition reaction of the carbon content in the heating device 22, and a large amount of combustible gas G1 can be generated from the carbon content contained in the mixture M. Therefore, the generation rate of the combustible gas G1 in the heating device 22 (the ratio of the generated amount of the combustible gas G1 to the amount of carbon contained in the mixture M) can be increased.

Further, although the waste crushing device 13 is installed in the above embodiment, the waste crushing device 13 can be omitted when the waste W1 is small. Further, although the immobilizing material crushing device 15 is installed in the above-described embodiment, the immobilizing material crushing device 15 can be omitted when the immobilizing material F1 is small. In this case, the mixture M is a mixture of the waste W1 supplied from the waste supply device 12 and the immobilization material F1 supplied from the immobilization material supply device 14. Further, in the above embodiment, the mixture M is supplied to the heating device 22, but the crushed waste W2 and the crushed immobilization material F2 may be separately supplied to the heating device 22 without being mixed. However, in this case, when supplying the crushed waste W2 and the crushed immobilization material F2 to the heating device 22, it is preferable to adjust the supply rate so that a predetermined ratio is obtained. The supply method may be a continuous type, an intermittent type, or a batch type depending on the type of the heating device 22.

Further, although the non-oxidizing gas supply device 24 is installed in the above-described embodiment, a suction device for sucking the internal air of the heating portion 22b may be used instead of the non-oxidizing gas supply device 24. .. Further, in the above-described embodiment, the water supply device 23 that supplies the water L to the heating device 22 is installed. However, instead of the water L, or a device that supplies water vapor to the heating device 22 together with the water L. It can also be used.

Further, in the above embodiment, the gas recovery device 31 includes the gas reforming device 32, but a gas recovery device that does not include the gas reforming device 32 may be provided instead of the gas recovery device 31.

Further, although the desalination/desulfurization device 44 is installed in the above-mentioned embodiment, the desalination/desulfurization device 44 may not be installed when the chlorine content concentration and the sulfur content concentration of the solid S3 are low. .. Further, instead of the desalination/desulfurization device 44, only the desalination device or only the desulfurization device can be installed.

1 Combustible waste treatment device 11 Heat pretreatment device 12 Waste supply device 13 Waste crushing device 14 Immobilization material supply device 15 Immobilization material crushing device 21 Heat treatment device 22 Heating device 22a Supply part 22b Heating part 22c Discharge part 23 Moisture Supply Device 24 Non-Oxidizing Gas Supply Device 31 Gas Recovery Device 32 Gas Reforming Device 33 Oxygen-Containing Gas Supply Device 34 Dust Collection Device 35 Induction Fan 41 Solids Recovery Device 42 Solids Removal Device 43 Solids Storage Device 44 Desorption Salt/desulfurization equipment 51 Fuel alternative utilization equipment D Dust F1 Immobilizing material F2 Crushing immobilizing material G1 Combustible gas G2 Combustible gas G3 Combustible gas I Non-oxidizing gas L Water M Mixture O Oxygen-containing gas S1 to S4 Solid matter W1 waste W2 crushed waste

Claims (7)

A heating device for heating a combustible material containing chlorine or/and sulfur in a non-oxidizing atmosphere;
A gas recovery device for recovering the flammable gas discharged from the heating device,
The heating device heats an immobilizing material containing an alkali metal or/and an alkaline earth metal together with the combustible material, so that the chlorine content or/and the sulfur content contained in the combustible material and the immobilizing material are included in the immobilizing material. A combustible substance treating apparatus, wherein the combustible substance treating apparatus reacts with the alkali metal and/or the alkaline earth metal. The combustible substance treating apparatus according to claim 1, wherein the heating device heats the combustible substance and the immobilizing material at 900°C or less. The gas recovery device,
A gas reforming device for heating and reforming the combustible gas discharged from the heating device to 1000° C. or higher, and recovering the flammable gas discharged from the gas reforming device. The combustible material processing device according to claim 1 or 2. Further comprising a water supply device for supplying water or/and steam to the heating device,
The combustible substance processing device according to claim 1, wherein the heating device heats the water and/or the steam together with the combustible substance. The combustible material treating apparatus according to claim 1, wherein the immobilizing material is a waste or a by-product containing the alkali metal and/or the alkaline earth metal. The heating device further comprises a solids recovery device for recovering solids remaining after the heating,
The combustible substance treating apparatus according to claim 1, wherein the heating device heats the combustible substance and the immobilizing material at 500° C. or more and 900° C. or less. By heating both a combustible material containing a chlorine content and/or a sulfur content and an immobilizing material containing an alkali metal or/and an alkaline earth metal in a non-oxidizing atmosphere, the chlorine content contained in the combustible material or And/or a sulfur content is reacted with the alkali metal or/and alkaline earth metal contained in the immobilization material,
A combustible substance processing method, characterized in that the combustible gas generated by the heating is recovered.

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