ES2061189T3 - Procedimiento para producir hidrogeno de alta pureza. - Google Patents

Procedimiento para producir hidrogeno de alta pureza.

Info

Publication number
ES2061189T3
ES2061189T3 ES91309837T ES91309837T ES2061189T3 ES 2061189 T3 ES2061189 T3 ES 2061189T3 ES 91309837 T ES91309837 T ES 91309837T ES 91309837 T ES91309837 T ES 91309837T ES 2061189 T3 ES2061189 T3 ES 2061189T3
Authority
ES
Spain
Prior art keywords
mixture
gas
high purity
purity hydrogen
procedure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES91309837T
Other languages
English (en)
Inventor
Wing-Chiu Francis Fong
Henry Choisun Chan
Robert Murray Suggitt
Manuel Eduardo Quintana
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texaco Development Corp
Original Assignee
Texaco Development Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27087214&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2061189(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US07/614,335 external-priority patent/US5152976A/en
Priority claimed from US07/669,796 external-priority patent/US5152975A/en
Application filed by Texaco Development Corp filed Critical Texaco Development Corp
Application granted granted Critical
Publication of ES2061189T3 publication Critical patent/ES2061189T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • C01B3/48—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 followed by reaction of water vapour with carbon monoxide
    • 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
    • C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
    • 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
    • C01B2203/0288—Processes for making hydrogen or synthesis gas containing a CO-shift step, i.e. a water gas shift step containing two CO-shift steps
    • 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
    • C01B2203/042—Purification by adsorption on solids
    • C01B2203/043—Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration
    • 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
    • C01B2203/0435—Catalytic purification
    • C01B2203/045—Purification by catalytic desulfurisation
    • 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
    • C01B2203/0465—Composition of the impurity
    • 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
    • C01B2203/0465—Composition of the impurity
    • C01B2203/0485—Composition of the impurity the impurity being a sulfur compound
    • 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
    • C01B2203/0465—Composition of the impurity
    • C01B2203/0495—Composition of the impurity the impurity being water
    • 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
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C01B2203/0816—Heating by flames
    • 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
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C01B2203/0822—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel the fuel containing hydrogen
    • 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
    • C01B2203/0833—Heating by indirect heat exchange with hot fluids, other than combustion gases, product gases or non-combustive exothermic reaction product gases
    • 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
    • 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
    • C01B2203/0872—Methods of cooling
    • C01B2203/0877—Methods of cooling by direct injection of fluid
    • 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
    • C01B2203/0872—Methods of cooling
    • C01B2203/0883—Methods of cooling by indirect heat exchange
    • 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
    • C01B2203/0872—Methods of cooling
    • C01B2203/0888—Methods of cooling by evaporation of a fluid
    • C01B2203/0894—Generation of steam
    • 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
    • C01B2203/1011—Packed bed of catalytic structures, e.g. particles, packing elements
    • 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
    • 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
    • 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
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • 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
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
    • C01B2203/1235—Hydrocarbons
    • C01B2203/1241—Natural gas or methane
    • 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
    • C01B2203/146—At least two purification steps in series
    • 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
    • C01B2203/148—Details of the flowsheet involving a recycle stream to the feed of the process for making hydrogen or synthesis gas
    • 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
    • Y02P20/10—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Industrial Gases (AREA)

Abstract

UN PROCESO PARA LA PRODUCCION DE HIDROGENO DE ALTA PUREZA. ESPECIFICAMENTE, EL PROCESO INCLUYE (1) OXIDACION PARCIAL DE UN GAS DE TUBERIA DE REFINERIA O UN TUBO DE ALIMENTACION HIDROCARBONOSO GASEOSO, QUE CONTENGA UN COMPONENTE PRINCIPAL QUE INCLUYA AL MENOS UN C SUB 1-C SUB 3 HIDROCARBONO Y QUE TENGA UN PESO MOLECULAR HASTA 30, PARA PRODUCIR UNA MEZCLA DE GAS SINTESIS DE MONOXIDO DE CARBONO E HIDROGENO, (2) HACIENDO REACCIONAR LA MEZCLA DE GAS DE SINTESIS CON VAPOR PARA CONVERTIR EL MONOXIDO DE CARBONO EN UNA MEZCLA DE GAS DE CRUDO QUE PRINCIPALMENTE INCLUYE DIOXIDO DE CARBONO E HIDROGENO, Y (3) SOMETER LA MEZCLA DE GAS CRUDA A LA ABSORCION DE PRESION OSCILANTE PARA PURIFICAR LA MEZCLA DE GAS CRUDO, PRODUCIENDO ASI HIDROGENO DE ALTA PUREZA Y UNA MEZCLA DE IMPUREZAS DE LOS GASES RECHAZADOS.
ES91309837T 1990-11-16 1991-10-24 Procedimiento para producir hidrogeno de alta pureza. Expired - Lifetime ES2061189T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/614,335 US5152976A (en) 1990-11-16 1990-11-16 Process for producing high purity hydrogen
US07/669,796 US5152975A (en) 1991-03-15 1991-03-15 Process for producing high purity hydrogen

Publications (1)

Publication Number Publication Date
ES2061189T3 true ES2061189T3 (es) 1994-12-01

Family

ID=27087214

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91309837T Expired - Lifetime ES2061189T3 (es) 1990-11-16 1991-10-24 Procedimiento para producir hidrogeno de alta pureza.

Country Status (9)

Country Link
EP (1) EP0486174B1 (es)
JP (1) JP3638618B2 (es)
KR (1) KR100209982B1 (es)
CN (1) CN1025844C (es)
AU (1) AU645628B2 (es)
DE (1) DE69104461T2 (es)
ES (1) ES2061189T3 (es)
MX (1) MX9101972A (es)
TW (1) TW197997B (es)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5458808A (en) * 1994-01-07 1995-10-17 Texaco Inc. Process for continuously controlling the heat content of a partial oxidation unit feed-gas stream
CN1067348C (zh) * 1996-12-19 2001-06-20 中国石化茂名石油化工公司 氢气保温保压循环方法
DE19902926C2 (de) * 1999-01-26 2001-01-04 Daimler Chrysler Ag Reaktoranlage und Betriebsverfahren hierfür
AU2001268019A1 (en) * 2000-07-07 2002-01-21 National University Of Singapore Method for hydrogen production
JP4568448B2 (ja) * 2001-03-30 2010-10-27 出光興産株式会社 水素製造プラントおよび水素製造方法
DE10334590B4 (de) * 2003-07-28 2006-10-26 Uhde Gmbh Verfahren zur Gewinnung von Wasserstoff aus einem methanhaltigen Gas, insbesondere Erdgas und Anlage zur Durchführung des Verfahrens
DE102006045379B4 (de) * 2006-09-26 2008-07-31 Lurgi Ag Verfahren zur Herstellung von Wasserstoff
KR100884701B1 (ko) 2007-08-22 2009-02-19 한국에너지기술연구원 연료개질 장치에서 압력구동을 이용한 이산화탄소 흡착제재생방법
JP5288840B2 (ja) * 2008-03-17 2013-09-11 Ｊｘ日鉱日石エネルギー株式会社 水素製造システム
US7909913B2 (en) 2008-07-17 2011-03-22 Air Products And Chemicals, Inc. Gas purification by adsorption of hydrogen sulfide
EP2414279A1 (en) * 2009-03-30 2012-02-08 Shell Internationale Research Maatschappij B.V. Process for producing a purified synthesis gas stream
AU2010230279B2 (en) * 2009-03-30 2013-10-10 Shell Internationale Research Maatschappij B.V. Process for producing purified synthesis gas
US8808654B2 (en) 2009-09-29 2014-08-19 Praxair Technology, Inc. Process for sulfur removal from refinery off gas
CN101773765B (zh) * 2010-01-14 2012-07-25 党延斋 炼厂干气中氢气的回收方法
US8206669B2 (en) * 2010-07-27 2012-06-26 Air Products And Chemicals, Inc. Method and apparatus for treating a sour gas
US8518356B2 (en) * 2010-07-27 2013-08-27 Air Products And Chemicals, Inc. Method and apparatus for adjustably treating a sour gas
CN102614764B (zh) * 2011-01-27 2014-03-26 中科合成油工程有限公司 一种费托合成尾气处理的工艺
CN103922280B (zh) * 2014-04-18 2017-10-20 四川省达科特能源科技股份有限公司 一种灵活焦化气化气制氢工艺方法
WO2016059566A1 (en) * 2014-10-15 2016-04-21 Sabic Global Technologies B.V. Integrated syngas-based production of dimethyl carbonate
CN109414708B (zh) * 2016-04-26 2021-09-03 纽卡斯尔创新有限公司 用于颗粒分离器的进料装置、颗粒分离器和颗粒分离方法
US10622656B2 (en) * 2017-10-11 2020-04-14 Saudi Arabian Oil Company Method and system for capturing high-purity CO2 in a hydrocarbon facility
CN110937573B (zh) * 2019-10-28 2023-08-22 中科液态阳光(苏州)氢能科技发展有限公司 氢气混合余气重整方法
CN112626560B (zh) * 2020-12-14 2022-04-08 阳光电源股份有限公司 电解槽设备及其气体回收装置、电解气体回收方法
CN114348962A (zh) * 2021-12-23 2022-04-15 甘肃银光聚银化工有限公司 一种基于排放火炬废气回收提氢方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR6899414D0 (pt) * 1963-06-06 1973-01-02 Texaco Development Corp Processo para producao de hidrogenio
US4533981A (en) * 1982-08-16 1985-08-06 Ready Metal Manufacturing Company Light cornice
GB8519821D0 (en) * 1985-08-07 1985-09-11 Ici Plc Hydrogen streams
DE3667180D1 (de) * 1985-06-27 1990-01-04 Texaco Development Corp Verfahren zur teiloxydation.
DE3605811A1 (de) * 1986-02-22 1987-08-27 Uhde Gmbh Vorrichtung zum einsetzen in einem verfahren zur erzeugung von produktgas mit wasserstoff- und kohlenoxidgehalten

Also Published As

Publication number Publication date
EP0486174B1 (en) 1994-10-05
DE69104461T2 (de) 1995-02-09
MX9101972A (es) 1992-07-08
KR920009687A (ko) 1992-06-25
EP0486174A1 (en) 1992-05-20
JP3638618B2 (ja) 2005-04-13
TW197997B (es) 1993-01-11
CN1061386A (zh) 1992-05-27
CN1025844C (zh) 1994-09-07
AU8787691A (en) 1992-05-21
AU645628B2 (en) 1994-01-20
JPH0624703A (ja) 1994-02-01
DE69104461D1 (de) 1994-11-10
KR100209982B1 (ko) 1999-07-15

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