WO2008009434A1 - dispositif d'Évaporation et/ou de pulvÉrisation d'un combustible, installation D'Évacuation des gaz d'Échappement pour un moteur À combustion interne et ensemble dotÉ d'un systÈme de reformage - Google Patents
dispositif d'Évaporation et/ou de pulvÉrisation d'un combustible, installation D'Évacuation des gaz d'Échappement pour un moteur À combustion interne et ensemble dotÉ d'un systÈme de reformage Download PDFInfo
- Publication number
- WO2008009434A1 WO2008009434A1 PCT/EP2007/006379 EP2007006379W WO2008009434A1 WO 2008009434 A1 WO2008009434 A1 WO 2008009434A1 EP 2007006379 W EP2007006379 W EP 2007006379W WO 2008009434 A1 WO2008009434 A1 WO 2008009434A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- catalyst
- region
- hydrocarbons
- combustion engine
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 238000001704 evaporation Methods 0.000 title claims abstract description 23
- 238000002407 reforming Methods 0.000 title claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 11
- 230000008020 evaporation Effects 0.000 title claims description 20
- 238000000889 atomisation Methods 0.000 title description 4
- 239000007789 gas Substances 0.000 claims abstract description 42
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 21
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 21
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001257 hydrogen Substances 0.000 claims abstract description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 11
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000003054 catalyst Substances 0.000 claims description 47
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 8
- 239000003225 biodiesel Substances 0.000 claims description 5
- 238000003776 cleavage reaction Methods 0.000 claims description 5
- 230000007017 scission Effects 0.000 claims description 5
- 238000005336 cracking Methods 0.000 claims description 4
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000002283 diesel fuel Substances 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000006262 metallic foam Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- -1 cerium organic compound Chemical class 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000006069 physical mixture Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/30—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel reformer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
- F01N2610/107—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance using glow plug heating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
Definitions
- the invention relates to a device for vaporizing a fuel containing hydrocarbons and for introducing a vapor generated from the fuel into a gas stream or a device for atomizing a hydrocarbon-containing fuel and introducing it into a gas stream, in particular for an exhaust system of an internal combustion engine or a Reforming means for generating a hydrogen-containing gas, said apparatus having at least one area which is exposed in operation to an elevated temperature and in which can form from the hydrocarbons of the fuel carbonaceous deposits. Furthermore, the invention relates to an exhaust system for an internal combustion engine and an assembly with a reforming device for generating a hydrogen-containing gas.
- Such an evaporation device is known, for example, from EP 1 369 557 A1 and is used in a motor vehicle exhaust system for introducing fuel into the exhaust gas flow upstream of an exhaust gas purification system, such as a particulate filter or a NO x storage catalyst, in order to regenerate this at periodic intervals .
- an exhaust gas purification system such as a particulate filter or a NO x storage catalyst
- Another possible use for such an evaporation or atomizing device is the introduction of fuel (in vapor or atomized form) into the air supply of a reforming device, such as an autothermal reformer, which generates a hydrogen-enriched gas from the fuel-air mixture. This can then be supplied to a fuel cell, serve as fuel for an internal combustion engine or also be used for the regeneration of an exhaust gas purification system.
- Regions of the devices exposed to elevated temperatures which can lead to the deposition of carbonaceous decomposition products, in particular coal or tar-like substances, in these areas, the Contaminate evaporation device and shorten its life.
- the deposition process is also referred to as "coking" and occurs increasingly in the vaporization of oxygen-enriched fuels or biodiesel.
- this is achieved in a device of the type mentioned above for vaporizing a fuel, characterized in that in the region which is exposed to an elevated temperature in operation, a catalyst for cleavage and conversion of hydrocarbons and / or deposits in at the operating temperature volatile products is provided.
- This catalyst promotes decomposition of the heavy hydrocarbon fractions in the fuel into volatiles, thus preventing the agglomeration of the hydrocarbons to form tarry deposits or "carbonizing" these deposits in the temperature-stressed region, thus increasing the life of the evaporator elevated.
- the evaporation device has an evaporation space with a heating element arranged therein, in particular a glow plug, wherein the catalyst is arranged in the evaporation space. Since high temperatures prevail during operation of the device, especially in the region of the heating element, the deposits described can form there.
- the coating may, for example, comprise a precursor, in particular a readily decomposable organometallic compound, from which the catalyst is e.g. produced by sintering or calcination.
- the heating element can be impregnated with the precursor for the catalyst and then heat treated, so that the from the
- Heating element is bonded.
- the generation of the catalyst via a Precursor leads to a finer distribution of the catalyst in the coating or the matrix and thus to a higher catalytic activity.
- a porous material containing the catalyst is arranged in the evaporation space, through which the fuel is passed. This material also surrounds the heating element directly.
- the porous material may be e.g. be a porous ceramic or a metal foam, which is catalytically activated or coated to promote the cleavage of heavy hydrocarbons and their deposit products.
- a second aspect of the invention provides, as already mentioned, a device of the type mentioned above for atomizing a hydrocarbon-containing fuel, which also in the area which is exposed to an elevated temperature in operation, a catalyst for cleavage and conversion of the hydrocarbons and / or the deposits in volatile at the operating temperature products is provided. Again, such an accumulation of coal or tarry deposits is prevented in this area and thus increases the life of the atomizing device.
- the sputtering apparatus has a section exposed to the gas flow during operation, in which the catalyst is arranged.
- This section is heated by the hot gas stream and is therefore susceptible to the formation of decomposition products from the fuel due to uneven atomization and agglomeration of heavy fuel fractions which may cake to the hot section and form tar or carbonaceous deposits.
- the introduced into the hot section catalyst favors the cleavage of the higher molecular weight fractions of the fuel into volatile products, so that a deposition of coal or tar-like substances is prevented.
- a coating containing the catalyst can be provided in the region of a nozzle exposed to the gas stream, or the catalyst is incorporated chemically or physically into the matrix material of the nozzle.
- the nozzle is used to introduce the fuel into the gas stream, so it is in direct contact with the fuel. Under certain circumstances, it may also be useful in the case of an evaporation device, which partially projects into a hot gas stream, to provide the projecting into the gas stream section with a catalyst.
- the fuel containing hydrocarbons is fuel, in particular diesel fuel. Also included are oxygen-enriched fuels or biodiesel, where a particularly high risk of the formation of tarry or carbonaceous
- Biodiesel are generally fuels from fatty acid methyl ester, in particular rapeseed oil methyl ester called.
- the catalyst preferably comprises one or more rare earth metal oxides, for example CeO 2 , either as a pure, mixed oxide or as a physical mixture with each other or together with other oxides.
- the catalyst can be considered as a cracking catalyst which produces volatiles from the heavy fuel fractions and / or carbonaceous deposits, even at relatively low temperatures, such as prevailing in an exhaust system, which do not affect the thermally stressed surfaces of the exhaust gas Settle device.
- Another aspect of the invention provides an exhaust system for a
- At least one exhaust gas purification system in particular a particulate filter with upstream oxidation catalyst or a NO x storage catalytic converter, and at least one device according to the invention, which is arranged upstream of the exhaust gas purification system.
- the device whether it is an evaporation or atomization device, serves for the regeneration of the exhaust gas purification system.
- Another application of the device according to the invention is in one
- Assembly with a reforming device for generating a hydrogen-containing gas is added, which has a feed line in addition to the device, wherein the device is arranged upstream of the reforming device.
- the device serves in this case to provide Fuel for an air-fuel mixture, which is decomposed in the Reformtechniksein ⁇ ' rect in a hydrogen-enriched gas.
- FIG. 1 is a view of an evaporation device according to a first embodiment of the invention, partially in section;
- FIG. 2 is a view of an evaporation device according to a second embodiment of the invention, partially in section;
- FIG. 3 is a sectional view of a sputtering device according to the invention.
- FIG. 4 is a schematic representation of an exhaust system according to the invention.
- FIG. 5 is a schematic representation of an assembly according to the invention with a reforming device.
- FIG. 1 shows a device 10 for evaporating a fuel, which has an elongate housing 12 in which an evaporation space 14 is formed.
- the evaporation chamber 14 is connected via an inlet 16 in connection with a fuel supply line 18, is guided in the liquid fuel.
- An air supply to the device 10 is not provided.
- the inlet 16 and the fuel supply line 18 are arranged laterally on the housing 12 in a region lying outside a line 20. In line 20, a gas flow is performed.
- a protruding into the line 20 portion 22 of the housing 12 has an outlet 24 which is arranged with respect to the cross section of the conduit 20 approximately centrally and in the flow direction of the gas stream (indicated by the arrow P 1 ).
- a heating element 26 here a glow plug, arranged in the evaporation chamber 14.
- the surface of the heating element 26 forms an area 28, which is exposed in operation of the device 10 to an elevated temperature and in the - -
- a catalyst is provided in region 28, which in the embodiment shown is contained in a coating 32 of the heating element 26.
- the catalyst serves to cleave and convert heavy hydrocarbons or carbonaceous deposits to volatile products at the operating temperature of the device, and thus may be considered as a cracking catalyst comprising, for example, a rare earth metal oxide such as CeO 2 .
- the catalyst may also be integrated chemically or physically into the surface of the heating element, which in the case of a glow plug consists of ceramic.
- the heating element can be impregnated with a cerium-containing precursor, in particular a cerium organic compound, and then the catalyst can be formed and stabilized in the ceramic matrix by sintering or calcination.
- FIG. 2 shows a device 10 according to a second embodiment of the invention, wherein the same or functionally identical components carry the same reference numerals and only the differences from the previously described embodiment will be discussed below.
- a porous material 34 containing the catalyst is arranged in the evaporation space 14.
- the porous material 34 is a metal foam which serves as a support for the catalyst.
- a porous ceramic material may also be used.
- the catalyst may be contained in a coating of the pores of the porous material 34, but may also be integrated into the porous material itself.
- the heating element 26 may also project wholly or partly into the conduit 20.
- FIG. 3 shows a device 40 according to a second aspect of the invention.
- the device 40 is a device for atomizing a fuel, again in particular fuel.
- the device 40 has a housing 42 and a fuel feed line 44, wherein a front
- Line 50 protrudes, in which a gas flow (arrow P 1 ) is guided. Since the section 46 is exposed to the gas flow with the nozzle 48, it forms a region 52, which is exposed in operation to an elevated temperature and in which thus carbonaceous deposits can form.
- a catalyst is provided in the area 52, in particular in the exit cone of the nozzle 48, which is contained in a coating 56. This splits high molecular weight fuel fractions and the resulting deposits, especially tarry substances, and converts them into volatile at the operating temperature products, whereby contamination of the nozzle 48 is prevented.
- the catalyst is also a kind of cracking catalyst which comprises, for example, a rare earth metal oxide such as CeO 2 .
- the devices 10 and 40 can, as shown in Figure 4, in an exhaust system 60 for an internal combustion engine 62, in particular in a motor vehicle, are used.
- the line 20 or 50 is then an exhaust pipe.
- the exhaust system 60 has an exhaust gas purification system 64 in the form of a particulate filter with an upstream oxidation catalyst or a NO x storage catalytic converter.
- the apparatus 10, 40 is disposed upstream of the exhaust gas purification system 64 with respect to the exhaust gas flow carried in the conduit 20, 50 to periodically regenerate it by introducing fuel into the conduit 20, 50.
- FIG. 5 shows an assembly 70 with a reforming device 72 for producing a hydrogen-containing gas.
- the assembly 70 further includes a supply line formed by the conduit 20, 50 and in which a device 10, 40 is disposed upstream of the reforming device 72.
- air is introduced, which mixes with the fuel from the device 10, 40, wherein the reforming device 72 generates a hydrogen-containing gas from the fuel-air mixture.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
Dispositif (10) destiné à évaporer un combustible contenant des hydrocarbures et à introduire une vapeur produite par le combustible dans un flux de gaz, et/ou dispositif destiné à pulvériser un combustible contenant des hydrocarbures et à introduire celui-ci dans un flux de gaz, en particulier pour une installation d'évacuation des gaz d'échappement d'un moteur à combustion interne ou un système de reformage destiné à produire un gaz contenant de l'hydrogène. Le dispositif comprend au moins une zone (28) qui est exposée en service à une température accrue et dans laquelle des dépôts carbonés provenant des hydrocarbures du combustible peuvent se former. Un catalyseur, destiné à diviser et à convertir les hydrocarbures et/ou les dépôts en produits volatiles à la température de service, est situé dans la zone (28).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102006033235.0 | 2006-07-18 | ||
DE102006033235.0A DE102006033235B8 (de) | 2006-07-18 | 2006-07-18 | Vorrichtung zum Verdampfen eines Brennstoffs, Abgasanlage für eine Verbrennungskraftmaschine sowie Baugruppe mit einer Reformierungseinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008009434A1 true WO2008009434A1 (fr) | 2008-01-24 |
Family
ID=38599370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/006379 WO2008009434A1 (fr) | 2006-07-18 | 2007-07-18 | dispositif d'Évaporation et/ou de pulvÉrisation d'un combustible, installation D'Évacuation des gaz d'Échappement pour un moteur À combustion interne et ensemble dotÉ d'un systÈme de reformage |
Country Status (2)
Country | Link |
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DE (1) | DE102006033235B8 (fr) |
WO (1) | WO2008009434A1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009053565A1 (fr) * | 2007-09-07 | 2009-04-30 | FAURECIA SYSTEMES D'ECHAPPEMENT (Société par actions simplifiée) | Dispositif de vaporisation d'un carburant |
FR2948968A1 (fr) * | 2009-08-07 | 2011-02-11 | Peugeot Citroen Automobiles Sa | Dispositif d'injection de carburant dans une ligne d'echappement pour la regeneration d'un filtre a particules |
CN102362050A (zh) * | 2009-03-23 | 2012-02-22 | 博格华纳贝鲁系统有限公司 | 用于将燃料引入机动车排气管的系统及用于该系统的燃料蒸发器 |
DE102011053021A1 (de) | 2010-08-26 | 2012-03-01 | Acandis Gmbh & Co. Kg | Elektrode für medizinische Anwendungen, System mit einer Elektrode und Verfahren zur Herstellung einer Elektrode |
WO2012025245A1 (fr) | 2010-08-26 | 2012-03-01 | Acandis Gmbh & Co. Kg | Électrode pour utilisations médicales, système comportant une électrode et procédé de fabrication d'une électrode |
DE102011009020A1 (de) | 2011-01-20 | 2012-07-26 | Acandis Gmbh & Co. Kg | Hörprothese und Verfahren zur Herstellung einer derartigen Hörprothese |
US10709588B2 (en) | 2010-08-26 | 2020-07-14 | Acandis Gmbh & Co. Kg | Medical device and system having such a device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018129884A1 (de) * | 2018-11-27 | 2020-05-28 | Thomas Magnete Gmbh | Vorrichtung zur Vermischung von Kraftstoff mit dem Abgas eines Verbrennungsmotors und eine solche Vorrichtung enthaltendes Abgasbehandlungssystem |
Citations (5)
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WO2001034950A1 (fr) * | 1999-11-10 | 2001-05-17 | Engelhard Corporation | Procede et appareil pour fournir un reducteur de no¿x? |
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US20060021332A1 (en) * | 2004-01-10 | 2006-02-02 | Gerd Gaiser | Exhaust system for an internal combustion engine and a respective operating method |
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EP1369557B1 (fr) * | 2002-06-07 | 2007-08-15 | ArvinMeritor Emissions Technologies GmbH | Véhicule entrainé par un moteur diesel comprenant un système d'épuration de gaz d'échappement à régénération discontinue par l'injection des vapeurs de carburant |
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2006
- 2006-07-18 DE DE102006033235.0A patent/DE102006033235B8/de not_active Expired - Fee Related
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2007
- 2007-07-18 WO PCT/EP2007/006379 patent/WO2008009434A1/fr active Application Filing
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DE4230054A1 (de) * | 1991-06-28 | 1994-03-10 | Man Nutzfahrzeuge Ag | Zerstäuberdüse |
WO2001034950A1 (fr) * | 1999-11-10 | 2001-05-17 | Engelhard Corporation | Procede et appareil pour fournir un reducteur de no¿x? |
US20040098975A1 (en) * | 2002-11-21 | 2004-05-27 | Van Nieuwstadt Michiel J. | Diesel aftertreatment systems |
US20060021332A1 (en) * | 2004-01-10 | 2006-02-02 | Gerd Gaiser | Exhaust system for an internal combustion engine and a respective operating method |
US20050274107A1 (en) * | 2004-06-14 | 2005-12-15 | Ke Liu | Reforming unvaporized, atomized hydrocarbon fuel |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009053565A1 (fr) * | 2007-09-07 | 2009-04-30 | FAURECIA SYSTEMES D'ECHAPPEMENT (Société par actions simplifiée) | Dispositif de vaporisation d'un carburant |
CN102362050A (zh) * | 2009-03-23 | 2012-02-22 | 博格华纳贝鲁系统有限公司 | 用于将燃料引入机动车排气管的系统及用于该系统的燃料蒸发器 |
CN102362050B (zh) * | 2009-03-23 | 2013-09-25 | 博格华纳贝鲁系统有限公司 | 用于将燃料引入机动车排气管的系统及用于该系统的燃料蒸发器 |
FR2948968A1 (fr) * | 2009-08-07 | 2011-02-11 | Peugeot Citroen Automobiles Sa | Dispositif d'injection de carburant dans une ligne d'echappement pour la regeneration d'un filtre a particules |
WO2012025246A1 (fr) | 2010-08-26 | 2012-03-01 | Acandis Gmbh & Co. Kg | Électrode pour utilisations médicales, système comportant une électrode et procédé de fabrication d'une électrode |
DE102011053018A1 (de) | 2010-08-26 | 2012-03-01 | Acandis Gmbh & Co. Kg | Elektrode für medizinische Anwendungen, System mit einer Elektrode und Verfahren zur Herstellung einer Elektrode |
WO2012025245A1 (fr) | 2010-08-26 | 2012-03-01 | Acandis Gmbh & Co. Kg | Électrode pour utilisations médicales, système comportant une électrode et procédé de fabrication d'une électrode |
DE102011053021A1 (de) | 2010-08-26 | 2012-03-01 | Acandis Gmbh & Co. Kg | Elektrode für medizinische Anwendungen, System mit einer Elektrode und Verfahren zur Herstellung einer Elektrode |
US9220899B2 (en) | 2010-08-26 | 2015-12-29 | Acandis Gmbh & Co. Kg | Electrode for medical applications, system having an electrode, and method for producing an electrode |
DE102011053018B4 (de) | 2010-08-26 | 2018-11-22 | Acandis Gmbh | Elektrode für medizinische Anwendungen, System mit einer derartigen Elektrode und Verfahren zur Herstellung einer derartigen Elektrode |
US10709588B2 (en) | 2010-08-26 | 2020-07-14 | Acandis Gmbh & Co. Kg | Medical device and system having such a device |
US11478369B2 (en) | 2010-08-26 | 2022-10-25 | Acandis Gmbh & Co. Kg | Medical device and system having such a device |
DE102011009020A1 (de) | 2011-01-20 | 2012-07-26 | Acandis Gmbh & Co. Kg | Hörprothese und Verfahren zur Herstellung einer derartigen Hörprothese |
Also Published As
Publication number | Publication date |
---|---|
DE102006033235B4 (de) | 2021-04-01 |
DE102006033235A1 (de) | 2008-01-24 |
DE102006033235B8 (de) | 2021-06-10 |
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