WO2004046026A1 - Verfahren zur erzeugung eines wasserstoffhaltigen brenngases für brennstoffzellen sowie vorrichtung dafür - Google Patents
Verfahren zur erzeugung eines wasserstoffhaltigen brenngases für brennstoffzellen sowie vorrichtung dafür Download PDFInfo
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- WO2004046026A1 WO2004046026A1 PCT/EP2003/012909 EP0312909W WO2004046026A1 WO 2004046026 A1 WO2004046026 A1 WO 2004046026A1 EP 0312909 W EP0312909 W EP 0312909W WO 2004046026 A1 WO2004046026 A1 WO 2004046026A1
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- Prior art keywords
- stage
- reforming
- hydrogen
- gas
- hydrocarbons
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 43
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 43
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000002737 fuel gas Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 55
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 41
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 40
- 239000007789 gas Substances 0.000 claims abstract description 36
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 238000002453 autothermal reforming Methods 0.000 claims abstract description 23
- 238000002407 reforming Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000001833 catalytic reforming Methods 0.000 claims abstract description 10
- 238000000629 steam reforming Methods 0.000 claims description 25
- 239000010948 rhodium Substances 0.000 claims description 21
- 229910052703 rhodium Inorganic materials 0.000 claims description 17
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 14
- 229910000510 noble metal Inorganic materials 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 239000010970 precious metal Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 23
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 230000003647 oxidation Effects 0.000 description 13
- 238000007254 oxidation reaction Methods 0.000 description 13
- 238000000576 coating method Methods 0.000 description 12
- 239000004215 Carbon black (E152) Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 description 9
- 230000003197 catalytic effect Effects 0.000 description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 4
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910002830 PrOx Inorganic materials 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 239000010412 oxide-supported catalyst Substances 0.000 description 2
- -1 platinum group metals Chemical class 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000012072 active phase Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000001193 catalytic steam reforming Methods 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001195 gallium oxide Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/248—Reactors comprising multiple separated flow channels
- B01J19/2485—Monolithic reactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/22—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds
- C01B3/24—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons
- C01B3/26—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/382—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/0053—Controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/02—Processes carried out in the presence of solid particles; Reactors therefor with stationary particles
- B01J2208/023—Details
- B01J2208/024—Particulate material
- B01J2208/025—Two or more types of catalyst
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/464—Rhodium
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- B01J35/56—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0233—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a steam reforming step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0244—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being an autothermal reforming step, e.g. secondary reforming processes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0283—Processes for making hydrogen or synthesis gas containing a CO-shift step, i.e. a water gas shift step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0405—Purification by membrane separation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
- C01B2203/0838—Methods of heating the process for making hydrogen or synthesis gas by heat exchange with exothermic reactions, other than by combustion of fuel
- C01B2203/0844—Methods of heating the process for making hydrogen or synthesis gas by heat exchange with exothermic reactions, other than by combustion of fuel the non-combustive exothermic reaction being another reforming reaction as defined in groups C01B2203/02 - C01B2203/0294
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1005—Arrangement or shape of catalyst
- C01B2203/1023—Catalysts in the form of a monolith or honeycomb
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1047—Group VIII metal catalysts
- C01B2203/1064—Platinum group metal catalysts
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/14—Details of the flowsheet
- C01B2203/142—At least two reforming, decomposition or partial oxidation steps in series
- C01B2203/143—Three or more reforming, decomposition or partial oxidation steps in series
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/80—Aspect of integrated processes for the production of hydrogen or synthesis gas not covered by groups C01B2203/02 - C01B2203/1695
- C01B2203/82—Several process steps of C01B2203/02 - C01B2203/08 integrated into a single apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Definitions
- the present invention relates to a method for generating fuel gases for fuel cells.
- a hydrogen-containing fuel gas is produced by reforming hydrocarbons and cleaned in further process steps.
- a device for carrying out this method is also described.
- the method according to the invention for the production of hydrogen-containing fuel gases is based on a multi-stage reforming of hydrocarbons and a subsequent cleaning of the fuel gas by means of subsequent reformate cleaning methods. These can be based, for example, on a water gas shift reaction (WGS) or on a gas separation membrane.
- WGS water gas shift reaction
- the reforming of hydrocarbons according to the invention has two stages and consists of an autothermal reforming and a downstream steam reforming.
- an educt mixture of hydrocarbons, air and water or water vapor is incompletely converted with a catalyst in an autothermal reforming to a hydrogen-rich gas mixture.
- This mixture which still contains residual hydrocarbons, is then reformed to a hydrogen-rich fuel gas in a subsequent steam reforming.
- a fuel gas is obtained which has a temperature at the reactor outlet of 450 to 650 ° C. and has a high proportion of hydrogen.
- the device for reforming (the reactor) is constructed in two stages, with a different catalyst being used in each stage.
- the fuel gas is then subjected to further purification directly, for example in a water gas shift reactor or through gas separation membranes. Methods and devices are used to generate hydrogen-containing fuel gases for fuel cells, in particular for mobile, but also for stationary use.
- CPO catalytic partial oxidation
- ⁇ is defined as the ratio of the number of moles of oxygen used to the number of moles of oxygen required for complete oxidation [see reaction equation (3)]:
- the autothermal steam reforming (“Autothermal reforming”, abbreviated “ATR”) consists of two sub-processes. It combines the steam reforming of equation (1) with the catalytic, partial oxidation of equation (2), the exothermic, partial oxidation providing the necessary heat of reaction for the endothermic steam reforming.
- the starting material mixture can be preheated to a preheating temperature.
- the product mixture is in thermodynamic equilibrium at the temperature prevailing at the reactor outlet.
- the autothermal reforming combines the advantages of catalytic, partial oxidation (good starting behavior) with those of steam reforming (high hydrogen yields) and is therefore preferably used for the generation of hydrogen in mobile fuel cell systems with on-board reforming.
- the autothermal reforming although it consists of two sub-processes as described, is regarded as a uniform process stage.
- EP 0 112613 B1 describes a process for the autothermal reforming of hydrocarbons in which the partial oxidation in zone 1, the steam reforming spatially separated from it, takes place in zone 2. Catalysts containing Pt and Pd are used for partial oxidation, and catalysts containing noble metals for steam reforming. A combination of the autothermal reforming with another subsequent steam reforming is not described.
- US 4,415,484 discloses a catalyst for use in an autothermal reforming reactor.
- the catalyst contains 0.01 to 6% rhodium and 10 to 35% calcium oxide on a support made of aluminum oxide and magnesium oxide.
- a typical catalyst system contains an iron oxide catalyst for partial oxidation on about a third of its length and the rhodium catalyst described on two thirds of its length.
- EP 1 157 968 AI describes a single-stage, adiabatically operated process for the autothermal catalytic steam reforming of hydrocarbons, a catalyst containing noble metal being used which is applied to a support body. This catalyst catalyzes both the partial oxidation and the steam reforming of hydrocarbons.
- DE-OS 199 55 892 AI proposes a process for reforming hydrocarbons, in particular diesel, which consists of a non-catalytic step and a catalytic step which take place spatially and thermally separately from one another.
- the hydrocarbon is sent through a burner nozzle and partially burned using a flame.
- the fuel gas mixture is then catalytically reformed in the second step.
- DE-OS 197 27 841 AI describes a method and a device for the autothermal reforming of hydrocarbons, in which the fuel is fed to a two-stage reforming reactor via a feed device.
- the resulting reformate is passed in a heat exchanger in counterflow and in a heat-exchanging manner to starting materials of the reforming which are led from the outside inwards.
- the fuel supplied via the feed device is applied with the starting material directly to the reaction zone having a catalyst, in which the combustion and reforming or catalysis is carried out.
- the reforming reactor contains a honeycomb body coated with catalyst in an upper region and a bed coated with catalyst in a lower region. A honeycomb body can also be used instead of the bed.
- DE-OS 199 47 755 AI discloses an autothermal reactor for reforming hydrocarbons, which consists of an endothermic reaction zone, an exothermic reaction zone and a downstream cooling zone (quench zone), the latter being separated by a gas-permeable heat shield.
- This reactor is elaborately designed, requires additional water metering in the quench zone and is therefore expensive, both in production and in operation.
- a fundamental disadvantage of the known processes for the autothermal reforming of hydrocarbons is the relatively high reaction temperature of 650 to 1000 ° C.
- a fuel gas mixture that was produced by autothermal reforming of gasoline has a temperature of at least 650 ° C at the gas outlet.
- the concentration of carbon monoxide in the reformate is in turn coupled to the outlet temperature via the thermodynamic equilibrium.
- the fuel gas Due to the high temperatures, the fuel gas has a relatively high content of CO and a lower content of hydrogen (typical fuel gases contain about 28 to 36 vol.% Hydrogen and 10 to 15 vol.% Carbon monoxide at 650 ° C).
- the overall hydrogen yield and, associated with this, the efficiency of the reforming is therefore unsatisfactory.
- a method for reforming hydrocarbons is to be specified which enables the combustion gas temperatures to be reduced by approximately 200 ° C., for example from 650 ° C. to 450 ° C.
- the hydrogen-containing fuel gas should be able to be fed directly into the subsequent cleaning stage (s) without additional cooling, so that expensive and voluminous heat exchanger systems are not required.
- the heart of the new process for fuel gas production is a two-stage reform process.
- This process consists of the combination of an autothermal reforming (which itself consists of two stages, namely partial oxidation and steam reforming) with a subsequent endothermic steam reforming of hydrocarbons.
- ATR stage a hydrogen-containing gas is generated at temperatures above 650 ° C.
- the composition of this gas mixture is adjusted so that it still contains residual amounts of unconverted hydrocarbons in the range from 0.1 to 10% by volume.
- SR stage in which these residual hydrocarbons are converted in an endothermic steam reforming (steam reforming, SR stage)
- the temperature of the fuel gas is reduced to around 450 ° C due to the adiabatic process control.
- the hydrogen yield is thereby increased in two ways: firstly by the further conversion in the steam reforming reaction in accordance with Eq. (1) and secondly by the fact that with falling temperature the equilibrium of the water gas shift reaction
- the hydrogen-containing fuel gas cools down to temperatures around 450 ° C and can be passed directly to the subsequent cleaning stages, ie without additional heat exchangers.
- the residual hydrocarbon proportions of 0.1 to 10% by volume required for steam reforming can be added to the gas mixture before entering the second stage, for example by means of nozzles or injectors. Conventional injection nozzles, such as those used in motor vehicle engine technology, are suitable for this.
- the necessary hydrocarbon fractions can also be ensured in the form of unreacted residues (hydrocarbon "slip") through special parameter selection in the autothermal reforming.
- the proportion of residual hydrocarbons can be controlled by a high space velocity (typically over 100,000 l / h); Such high space velocities generally result in incomplete conversion of the hydrocarbons.
- the residual hydrocarbons in the fuel gas required for the downstream steam reforming can be ensured by design measures on the reactor itself. This is achieved, for example, by using monolithic catalyst supports with a cell density below 93 cell cm (600 cpsi) or by installing additional flow channels in the monoliths, which have a larger diameter than the remaining flow channels.
- ATR a monolith with a low cell density of 62 cells / cm 2 (400 cpsi)
- SR a monolith with a high cell density of 186 cells / cm 2 (1200 cpsi) be used.
- the water required for steam reforming can be added separately or together with the hydrocarbon before the second stage. In many cases, depending on the type of reaction, the external addition of water is not necessary, since a corresponding excess of water can be added in the first stage in the ATR process.
- FIG. 1 Basic structure of the device for two-stage catalytic
- Figure 2 Basic structure of the device for two-stage catalytic reforming with separate addition of stage hydrocarbons or
- the reactor device according to the invention consists of two stages (ATR stage and SR stage), which contain two monolithic supports made of metal or ceramic and are arranged directly one behind the other. These support bodies can be coated with different catalysts (see figure
- the two reactors are arranged in series one behind the other, a device for metering in hydrocarbon and / or water being arranged in an intermediate space.
- the metering can take place, for example, through nozzles or injectors.
- FIG. 3 shows the gas generation system according to the invention, consisting of the two-stage catalytic reforming reactor and a subsequent gas cleaning stage, which are built on one or more water gas shift stages (for example high-temperature WGS, low-temperature WGS or combinations thereof) or on a gas separation membrane (for example membranes) made of palladium alloys).
- a subsequent purification of the fuel gas by means of a gas separation membrane a further process step for removing carbon monoxide down to contents below 100 ppm CO is generally no longer necessary.
- WGS water gas shift stage
- PrOx preferential oxidation
- the educt mixture can also be briefly electrically preheated for quick commissioning of the entire gas generation system.
- the low thermal mass of the catalysts advantageously leads to the fact that fuel gas production begins after only a few seconds.
- Catalyst systems containing noble metals are preferably required for the two-stage reforming process according to the invention.
- the catalyst for the autothermal Reforming (ATR stage) contains, for example, a noble metal-containing catalyst mass on a support body, which is applied in the form of a coating on the geometric surfaces of the support body. Platinum and / or rhodium are preferably used as active phases; Pd-containing catalysts are also possible. Examples are catalysts with 0.1 to 5% by weight of platinum on aluminum oxide and / or 0.1 to 5% by weight of rhodium on aluminum oxide.
- Preferred supporting bodies are monolithic honeycomb bodies made of ceramic or metal, open-cell ceramic or metallic foam bodies, metal sheets or irregularly shaped components.
- the total thickness of the catalytic coating is usually between 20 and 200 ⁇ m.
- the catalyst mass can have a second, upper catalyst layer in addition to a lower catalyst layer, it being possible for the two layers to contain different platinum group metals.
- Catalysts containing noble metals are also used for the steam reforming of the residual hydrocarbons in the second stage of the reactor (SR stage).
- catalysts are suitable which contain at least one of the noble metals from the group Au, Pt, Rh.
- a catalyst consisting of 0.1 to 5% by weight of Rh on aluminum oxide, optionally with additions of gold and / or platinum, is preferably used.
- multilayer catalyst coatings for example made of Au and Rh; Au, Pt and Rh or Au and Pt can be used.
- the noble metals are used in the form of so-called supported catalysts or supported catalysts, in which the noble metal is applied to an oxidic carrier material in a high distribution (ie dispersion).
- Oxides from the group aluminum oxide, silicon dioxide, titanium dioxide or mixed oxides thereof and zeolites are suitable as the oxidic carrier material for the platinum group metals.
- Materials with a specific surface area of more than 10 m 2 / g are preferably used in order to enable a highly disperse distribution of the catalytically active components on this large surface area.
- the techniques for producing such a supported catalyst and for coating an inert support body with it are known to the person skilled in the art.
- the catalyst mass can additionally select at least one oxide from the group consisting of boron oxide, bismuth oxide, gallium oxide, oxides of the alkali metals, oxides of the alkaline earth metals, oxides of the subgroup elements and oxides of the rare earth metals in a concentration of up to 40% by weight, based on the total weight of the catalyst mass.
- the catalyst layers can additionally contain cerium oxide to reduce soot deposits and to increase sulfur resistance.
- the gas generation system according to the invention can be carried out with aliphatic (methane, propane, butane etc.), with aromatic hydrocarbons (benzene, toluene, xylene etc.), with hydrocarbon mixtures (e.g. natural gas, gasoline, heating oil or diesel oil) or alcohols (e.g. ethanol).
- hydrocarbon mixtures e.g. natural gas, gasoline, heating oil or diesel oil
- alcohols e.g. ethanol
- steam / carbon ratios S / C between 0.7 and 5 can be used.
- the air ratio ⁇ of the educt mixture and its preheating temperature are chosen so that a temperature between 600 and 800 ° C., preferably 650 ° C., is established at the exit of the first ATR stage.
- the proposed gas generation system or the device can be used for the production of hydrogen or hydrogen-containing mixtures for mobile and stationary fuel cells.
- a mixture of isooctane and toluene (50% by weight in each case) is reformed by the process according to the invention in a two-stage reactor (consisting of an ATR stage and an SR stage, construction according to FIG. 1).
- the reactor inlet temperature at the ATR stage is 400 ° C
- the air stoichiometry ( ⁇ value) is 0.3
- the S / C value is 3.
- the reformate contains about 5% by volume of residual hydrocarbons after passing the first stage; the temperature of the reformate mixture at the outlet of the ATR stage is 650 ° C.
- a monolith with a cell density of 62 cells / cm 2 (400 cpsi) and a volume of 35 cm 3 is used as catalyst for the ATR stage.
- the catalytic coating consists of a rhodium / aluminum oxide supported catalyst and is applied to the honeycomb body in a concentration of 150 grams per liter.
- the reformate is initiated at 650 ° C in the second stage (SR stage).
- a monolith with 186 cells / cm 2 (1200 cpsi) and one volume is used as the catalyst for the SR stage of 140 cm 3 used, which is coated with a rhodium / alumina supported catalyst.
- the coating concentration of the catalyst is 150 g / 1
- the temperature at the outlet of the second stage is 450 ° C.
- the hydrogen concentration of the reformate is 40% by volume, the CO concentration is 8% by volume.
- the reformate thus produced has a high hydrogen concentration and is fed directly into a WGS reactor.
- the CO content of the fuel gas is further reduced in this high-temperature shift stage.
- a mixture of isooctane and toluene (50% by weight in each case) is reformed in a two-stage reactor (consisting of an ATR stage and a separate SR stage according to FIG. 2) by the process according to the invention.
- the reactor inlet temperature at the ATR stage is 400 ° C
- the air stoichiometry ( ⁇ value) is 0.3
- the S / C value is 3.
- a mixture of isooctane / toluene (1: 1) is metered in with the aid of an injector nozzle, which is fitted between the two reactors.
- the metered quantity is adjusted so that a hydrocarbon content of 3 vol.% In the reformate gas is achieved before it enters the (second) SR stage.
- a monolith with a cell density of 62 cells / cm 2 (400 cpsi) and a volume of 70 cm 3 is again used as the catalyst for the ATR stage. It is coated with a supported catalyst containing 0.67% by weight of rhodium on aluminum oxide. The temperature of the gas mixture at the outlet of the ATR stage is
- Catalyst is 150 g / 1, that of rhodium 3 g / 1.
- SR level is 440 ° C and the hydrogen concentration of the reformate is 40.5
- the reformate thus produced has a high hydrogen concentration and is fed directly into a membrane reactor (based on a Pd gas separation membrane). In this reactor, the CO content of the
- Comparative example VB1 The one-step standard process for autothermal reforming is used to clarify the improvements of the two-step process according to the invention.
- a mixture of isooctane and toluene (50% by weight in each case) is reformed in a one-stage reactor by the standard process (described in EP 1 157 968 A1, Example 1).
- the reactor inlet temperature at the ATR stage is 500 ° C
- the air stoichiometry (lambda value) is 0.3
- the S / C value is 1.5.
- a monolith with a cell density of 62 cells / cm 2 (400 cpsi) and a volume of 35 cm 3 is used as the catalyst for the ATR stage.
- the catalytic coating consists of a rhodium / aluminum oxide supported catalyst and is applied to the honeycomb body in a concentration of 150 grams per liter.
- the temperature of the reformate mixture leaving the catalyst is 680 ° C.
- the reformate contains (in addition to nitrogen and carbon dioxide) 36% by volume hydrogen and 12% by volume carbon monoxide.
- the reformate produced therefore has a lower hydrogen concentration and must also be cooled to 450 ° C. with a heat exchanger before being introduced into the WGS stage. Only then can it be initiated in the high-temperature shift stage of the gas generation system. The superiority of the method according to the invention can be seen.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/535,605 US20060168887A1 (en) | 2002-11-19 | 2003-10-18 | Method for producing a fuel gas containing hydrogen for electrochemical cells and associated device |
AU2003302090A AU2003302090A1 (en) | 2002-11-19 | 2003-11-18 | Method for producing a fuel gas containing hydrogen for electrochemical cells and associated device |
EP03811381A EP1562853A1 (de) | 2002-11-19 | 2003-11-18 | Verfahren zur erzeugung eines wasserstoffhaltigen brenngases für brennstoffzellen sowie vorrichtung dafür |
JP2004552649A JP2006506309A (ja) | 2002-11-19 | 2003-11-18 | 燃料電池用水素含有燃料ガスの製造方法およびこの目的のための装置 |
Applications Claiming Priority (2)
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DE10253930.8 | 2002-11-19 | ||
DE10253930A DE10253930A1 (de) | 2002-11-19 | 2002-11-19 | Verfahren zur Erzeugung eines wasserstoffhaltigen Brenngases für Brennstoffzellen sowie Vorrichtung dafür |
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WO2004046026A1 true WO2004046026A1 (de) | 2004-06-03 |
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PCT/EP2003/012909 WO2004046026A1 (de) | 2002-11-19 | 2003-11-18 | Verfahren zur erzeugung eines wasserstoffhaltigen brenngases für brennstoffzellen sowie vorrichtung dafür |
Country Status (7)
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US (1) | US20060168887A1 (de) |
EP (1) | EP1562853A1 (de) |
JP (1) | JP2006506309A (de) |
KR (1) | KR20050083902A (de) |
AU (1) | AU2003302090A1 (de) |
DE (1) | DE10253930A1 (de) |
WO (1) | WO2004046026A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007005255A2 (en) * | 2005-06-30 | 2007-01-11 | General Electric Company | System and method for hydrogen production |
JP2007131513A (ja) * | 2005-11-10 | 2007-05-31 | Samsung Sdi Co Ltd | 改質器及びこれを採用した燃料電池システム |
EP2022756A2 (de) * | 2007-08-07 | 2009-02-11 | Delphi Technologies, Inc. | Abgestufter Kohlenwasserstoffumformer |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7569085B2 (en) * | 2004-12-27 | 2009-08-04 | General Electric Company | System and method for hydrogen production |
US20080155984A1 (en) * | 2007-01-03 | 2008-07-03 | Ke Liu | Reforming system for combined cycle plant with partial CO2 capture |
DE102007017501A1 (de) * | 2007-04-13 | 2008-10-16 | Enerday Gmbh | Verfahren zum Überprüfen eines Reformers und elektrische Steuereinheit |
DE102008021083A1 (de) * | 2008-04-28 | 2009-10-29 | Viessmann Werke Gmbh & Co Kg | Verfahren zur Herstellung eines wasserstoffhaltigen Gasgemisches |
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2003
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- 2003-11-18 WO PCT/EP2003/012909 patent/WO2004046026A1/de active Application Filing
- 2003-11-18 AU AU2003302090A patent/AU2003302090A1/en not_active Abandoned
- 2003-11-18 KR KR1020057009054A patent/KR20050083902A/ko not_active Application Discontinuation
- 2003-11-18 JP JP2004552649A patent/JP2006506309A/ja active Pending
- 2003-11-18 EP EP03811381A patent/EP1562853A1/de not_active Withdrawn
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Also Published As
Publication number | Publication date |
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KR20050083902A (ko) | 2005-08-26 |
US20060168887A1 (en) | 2006-08-03 |
DE10253930A1 (de) | 2004-06-09 |
AU2003302090A1 (en) | 2004-06-15 |
EP1562853A1 (de) | 2005-08-17 |
JP2006506309A (ja) | 2006-02-23 |
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