DE202015007876U1 - Compact reformer for the production of a hydrogen-containing gas from liquid gas - Google Patents

Compact reformer for the production of a hydrogen-containing gas from liquid gas Download PDF

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DE202015007876U1
DE202015007876U1 DE202015007876.1U DE202015007876U DE202015007876U1 DE 202015007876 U1 DE202015007876 U1 DE 202015007876U1 DE 202015007876 U DE202015007876 U DE 202015007876U DE 202015007876 U1 DE202015007876 U1 DE 202015007876U1
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DBI GAS und UMWELTTECHNIK GmbH
DBI GAS- und UMWELTTECHNIK GmbH
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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
    • C01B3/48—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
    • 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
    • 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
    • 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
    • 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
    • C01B2203/0445—Selective methanation
    • 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
    • C01B2203/047—Composition of the impurity the impurity being 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
    • C01B2203/06—Integration with other chemical processes
    • C01B2203/066—Integration with other chemical processes with fuel cells
    • 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
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C01B2203/0827—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel at least part of the fuel being a recycle stream
    • 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
    • C01B2203/1288—Evaporation of one or more of the different feed components
    • 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
    • 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

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

Abstract

Flüssiggasbetriebener Kompaktreformer, dadurch gekennzeichnet, dass eine kompakte Reformereinheit bestehend aus mindestens einer, bevorzugt zwei Vorreformierungsstufen zur Spaltung höherer Kohlenwasserstoffverbindungen kombiniert mit einer mindestens einstufigen Dampfreformierung und anschließender Gasreinigung (optional) ausgeführt wird.Liquefied gas operated compact reformer, characterized in that a compact reformer unit consisting of at least one, preferably two Vorreformierungsstufen for cleaving higher hydrocarbon compounds combined with at least one-stage steam reforming and subsequent gas purification (optional) is performed.

Description

Der erfindungsgemäße Kompaktreformer ist eine verfahrenstechnisch optimierte Dampf-Reformereinheit zur Erzeugung von wasserstoffreichen Gasen aus kohlenwasserstoffhaltigen Ausgangsstoffen, vorzugsweise Flüssiggas. Der Kompaktreformer kann beispielsweise zur Bereitstellung von Wasserstoff für den Betrieb eines PEM-Brennstoffzellen-BHKW verwendet werden. Die Größe der Reformiereinheit ist für die Erzeugung von Wasserstoff im Bereich von 1,5 bis 5 m3/h konzipiert, ist aber skalierbar und kann somit für spezielle Anwendungsfälle angepasst werden.The compact reformer according to the invention is a process-technically optimized steam reformer unit for producing hydrogen-rich gases from hydrocarbon-containing starting materials, preferably liquid gas. The compact reformer can be used, for example, to provide hydrogen for the operation of a PEM fuel cell CHP. The size of the reforming unit is designed to produce hydrogen in the range of 1.5 to 5 m 3 / h, but is scalable and can therefore be adapted for special applications.

Es sind zahlreiche apparative Anwendungen bekannt, welche nach dem Verfahren der Dampfreformierung kohlenwasserstoffreiche Ausgangsstoffe in ein wasserstoffhaltiges Reformatgas aufspalten. Das so erzeugte Synthesegas bzw. der darin enthaltene Wasserstoff kann zum Beispiel in Brennstoffzellen zur Stromerzeugung verwendet werden. Bei den meisten dieser Anordnungen wird Erdgas mit der Hauptkomponente Methan (CH4) als Ausgangsstoff genutzt. Eine flächendeckende Anwendung ist somit nicht gewährleistet, da selbst in Ländern mit sehr gut ausgebauter Erdgasinfrastruktur Gebiete ohne Erdgasversorgung bestehen. Eine alternative Möglichkeit ist der Einsatz von Flüssiggas, welches mittels Eisenbahnkesselwagen und Straßentankfahrzeugen oder entsprechenden Transportbehältern an beliebige Orte transportiert werden kann. Die typischerweise bei der Erdgasreformierung eingesetzten Katalysatoren (nickelhaltige oder Edelmetallkatalysatoren) sind für die Reformierung von Flüssiggas nur bedingt geeignet. Zudem neigen die höheren Kohlenwasserstoffe, die mit dem Flüssiggas zugeführt werden, aufgrund ihrer chemischen Eigenschaften zur Zersetzung unter Bildung von festem Kohlenstoff. Letzterer lagert sich an Wandungen, Katalysatoren etc. ab und begrenzt somit die Betriebsdauer. Zur Vermeidung der genannten Probleme haben sich in der großindustriellen Anwendung Prereformer etabliert, in denen die höheren Kohlenwasserstoffe zunächst an speziellen Katalysatoren bei Temperaturen zwischen 350 und 550°C ohne Kohlenstoffbildung aufgespalten werden, bevor in der eigentlichen Reformierung bei höheren Temperaturen das Synthesegas bzw. der Wasserstoff erzeugt wird. Die bekannten Anordnungen basieren auf zwei separaten Reaktionseinheiten, die unabhängig voneinander thermisch regelbar sind, womit insbesondere bei kleinen Reformereinheiten ein unverhältnismäßiger apparativer und regelungstechnischer Aufwand verbunden ist.There are numerous apparatus applications known which split by the process of steam reforming hydrocarbon-rich starting materials in a hydrogen-containing reformate gas. The synthesis gas or the hydrogen contained therein can be used for example in fuel cells for power generation. Most of these arrangements use natural gas with the main component methane (CH 4 ) as the starting material. An area-wide application is thus not guaranteed, since even in countries with well-developed natural gas infrastructure there are areas without natural gas supply. An alternative possibility is the use of liquefied petroleum gas, which can be transported by rail tank cars and road tankers or appropriate transport containers to any location. The catalysts typically used in natural gas reforming (nickel-containing or noble metal catalysts) are only of limited suitability for the reforming of liquefied petroleum gas. In addition, the higher hydrocarbons which are supplied with the liquefied gas, due to their chemical properties, tend to decompose to form solid carbon. The latter is deposited on walls, catalysts etc. and thus limits the service life. In order to avoid the problems mentioned, pre-formers have become established in large-scale industrial applications in which the higher hydrocarbons are first split on specific catalysts at temperatures between 350 and 550 ° C. without carbon formation, before the synthesis gas or the hydrogen in the actual reforming at higher temperatures is produced. The known arrangements are based on two separate reaction units, which are independently thermally controllable, which is associated with a disproportionate apparatus and control engineering effort, especially for small reformer units.

Der erfindungsgemäße Reformer zeichnet sich gegenüber dem Stand der Technik durch die in den Schutzansprüchen zu diesem Gebrauchsmuster aufgeführten Aspekte aus, vor allem durch den apparativen und energetischen Zusammenhang von Prereformer und Reformer. Die wärmetechnische Verschaltung innerhalb des Reformersystems gewährleistet die Einhaltung der erforderlichen Betriebstemperaturen im Prereformer ohne separate Regelung. Aufgrund der Anordnung und Gestaltung des Prereformers sind die Bereitstellung der benötigten Reaktionswärme und die Vermeidung der Überhitzung der Katalysatoren sichergestellt.The reformer according to the invention is distinguished from the prior art by the aspects listed in the claims for protection of this utility model, in particular by the apparatus and energetic relationship between the preformer and the reformer. The thermal connection within the reformer system ensures compliance with the required operating temperatures in the Prereformer without separate control. Due to the arrangement and design of the Prereformers the provision of the required heat of reaction and the prevention of overheating of the catalysts are ensured.

Neben dem Prereformer und dem Reformer sind auch die weiteren, für den Betrieb erforderlichen Bestandteile vollständig in das System integriert, dazu gehören:

  • – Brennersystem zur Reformerbeheizung mit Flüssiggas und/oder wasserstoffhaltigen Gasen (z. B. Brennstoffzellen-Restgas)
  • – Verdampfer inkl. Dampfstrahlpumpe und Wasserdosierung
  • – Optionale Katalytische Gasreinigung zur Reduzierung des CO-Gehaltes unter Nutzung der Wasser-Gas-Shirt-Reaktion und ggf. anschließender CO-Feinreinigung, z. B. durch eine selektive Methanisierung
  • – Verbrennungsluftvorwärmung zur Erhöhung der Effizienz
In addition to the Prereformer and the Reformer, the other components required for operation are also fully integrated into the system, including:
  • - Burner system for reform heating with LPG and / or hydrogen-containing gases (eg fuel cell residual gas)
  • - Evaporator incl. Steam jet pump and water metering
  • - Optional catalytic gas cleaning to reduce the CO content using the water-gas shirt reaction and possibly subsequent CO fine cleaning, z. B. by a selective methanation
  • - Combustion air preheating to increase efficiency

Zusammenfassend besteht der wesentliche Bestandteil des Gebrauchsmusters in einer apparativen Anordnung zur Reformierung von kohlenwasserstoffhaltigen Gasen, bevorzugt Flüssiggas mit einer neuartigen energetischen Verschaltung der Reaktionsbereiche. Höhere Kohlenwasserstoffverbindungen des zugeführten Flüssiggases werden zunächst in einer integrierten Prefreformingzone aufgespalten. In der anschließenden Reformierungszone erfolgt die Umwandlung zu Wasserstoff, Kohlenmonoxid und Kohlendioxid. Nach einem Wärmeübertrager schließt sich optional eine bevorzugt zweistufige CO-Reinigung an, so dass ein nahezu CO-freies Wasserstoff-Kohlendioxidgemisch den Kompaktreformer verlässt.In summary, the essential part of the utility model in an apparatus arrangement for the reforming of hydrocarbon-containing gases, preferably liquid gas with a novel energetic interconnection of the reaction areas. Higher hydrocarbon compounds of the supplied liquefied gas are first split in an integrated preforming zone. In the subsequent reforming zone, the conversion to hydrogen, carbon monoxide and carbon dioxide takes place. After a heat exchanger optionally followed by a preferably two-stage CO purification, so that a nearly CO-free hydrogen-carbon dioxide mixture leaves the compact reformer.

Beispiele zum Stand der Technik: DE19833644 , DE60311029 , DE 10 2009 052 649 und DE 10 2011 109 105 Examples of the prior art: DE19833644 . DE60311029 . DE 10 2009 052 649 and DE 10 2011 109 105

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 19833644 [0006] DE 19833644 [0006]
  • DE 60311029 [0006] DE 60311029 [0006]
  • DE 102009052649 [0006] DE 102009052649 [0006]
  • DE 102011109105 [0006] DE 102011109105 [0006]

Claims (8)

Flüssiggasbetriebener Kompaktreformer, dadurch gekennzeichnet, dass eine kompakte Reformereinheit bestehend aus mindestens einer, bevorzugt zwei Vorreformierungsstufen zur Spaltung höherer Kohlenwasserstoffverbindungen kombiniert mit einer mindestens einstufigen Dampfreformierung und anschließender Gasreinigung (optional) ausgeführt wird.Liquefied gas operated compact reformer, characterized in that a compact reformer unit consisting of at least one, preferably two Vorreformierungsstufen for cleaving higher hydrocarbon compounds combined with at least one-stage steam reforming and subsequent gas purification (optional) is performed. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass die benötigte Reaktionswärme durch die Verbrennung von Flüssiggas und/oder wasserstoffhaltigen Gasen, bevorzugt Restgasen der Brennstoffzelle bereitgestellt wird.Arrangement according to claim 1, characterized in that the required heat of reaction by the combustion of liquid gas and / or hydrogen-containing gases, preferably residual gases of the fuel cell is provided. Anordnung nach Anspruch 2, dadurch gekennzeichnet, dass die Prereformingzone zur Vermeidung einer Überhitzung thermisch vollständig oder zumindest größtenteils durch die Reformierungszone vom Verbrennungsbereich abgeschirmt wird.Arrangement according to claim 2, characterized in that the Prereformingzone to prevent overheating is thermally completely or at least largely shielded by the reforming zone of the combustion region. Anordnung nach Anspruch 2, dadurch gekennzeichnet, dass der Wärmebedarf der Prereformingzone im Wesentlichen nicht aus den Verbrennungsgasen gedeckt wird, sondern durch interne Wärmeübertragung von Prozessgasen.Arrangement according to claim 2, characterized in that the heat requirement of the Prereformingzone is essentially not covered by the combustion gases, but by internal heat transfer of process gases. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass in der Reformereinheit eine mindestens einstufige Gasreinigung integriert ist, welche die Reduzierung des CO-Anteils im Produktgas ermöglicht, wobei bevorzugt Gehalte unter 10 ppm erreicht werden.Arrangement according to claim 1, characterized in that in the reformer unit at least one-stage gas cleaning is integrated, which allows the reduction of the CO content in the product gas, wherein preferably contents below 10 ppm are achieved. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass das zugeführte Flüssiggas durch eine mit Wasserdampf betriebene Strahlpumpe gefördert wird.Arrangement according to claim 1, characterized in that the supplied liquid gas is conveyed through a jet pump operated with steam. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Verbrennungsluft durch Kühlung einzelner Prozessstufen vorgewärmt wird.Arrangement according to claim 1, characterized in that the combustion air is preheated by cooling individual process stages. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Wasserstofferzeugung bis 10 m3/h, bevorzugt bis 5 m3/h, beträgt und über weite Bereiche, bevorzugt zwischen 30% und 100%, stufenlos geregelt werden kann.Arrangement according to claim 1, characterized in that the hydrogen production is up to 10 m 3 / h, preferably to 5 m 3 / h, and over wide ranges, preferably between 30% and 100%, can be controlled continuously.
DE202015007876.1U 2015-11-12 2015-11-12 Compact reformer for the production of a hydrogen-containing gas from liquid gas Expired - Lifetime DE202015007876U1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833644A1 (en) 1998-07-25 2000-02-03 Dbb Fuel Cell Engines Gmbh Reactor unit in a system for generating a hydrogen-rich gas from a liquid raw fuel
DE60311029T2 (en) 2002-03-26 2007-05-03 Matsushita Electric Industrial Co., Ltd., Kadoma System for generating hydrogen and fuel cell operated therewith
DE102009052649A1 (en) 2009-11-10 2011-05-12 Linde Aktiengesellschaft Heating a pre-reformer in a synthesis gas system, comprises supplying methane-feed to steam reformer, converting the stream into gas, using part of methane-feed for the formation hot gas, and passing the hot gas through the pre-reformer
DE102011109105B3 (en) 2011-08-02 2013-01-31 Enymotion Gmbh The fuel cell system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833644A1 (en) 1998-07-25 2000-02-03 Dbb Fuel Cell Engines Gmbh Reactor unit in a system for generating a hydrogen-rich gas from a liquid raw fuel
DE60311029T2 (en) 2002-03-26 2007-05-03 Matsushita Electric Industrial Co., Ltd., Kadoma System for generating hydrogen and fuel cell operated therewith
DE102009052649A1 (en) 2009-11-10 2011-05-12 Linde Aktiengesellschaft Heating a pre-reformer in a synthesis gas system, comprises supplying methane-feed to steam reformer, converting the stream into gas, using part of methane-feed for the formation hot gas, and passing the hot gas through the pre-reformer
DE102011109105B3 (en) 2011-08-02 2013-01-31 Enymotion Gmbh The fuel cell system

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