EP2032248A1 - Reformer for a fuel cell system - Google Patents

Reformer for a fuel cell system

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Publication number
EP2032248A1
EP2032248A1 EP07764386A EP07764386A EP2032248A1 EP 2032248 A1 EP2032248 A1 EP 2032248A1 EP 07764386 A EP07764386 A EP 07764386A EP 07764386 A EP07764386 A EP 07764386A EP 2032248 A1 EP2032248 A1 EP 2032248A1
Authority
EP
European Patent Office
Prior art keywords
fuel
reformer
fuel supply
primary
cell system
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.)
Withdrawn
Application number
EP07764386A
Other languages
German (de)
French (fr)
Inventor
Matthias Boltze
Norbert GÜNTHER
Stefan Käding
Jeremy Lawrence
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.)
Enerday GmbH
Original Assignee
Enerday GmbH
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
Application filed by Enerday GmbH filed Critical Enerday GmbH
Publication of EP2032248A1 publication Critical patent/EP2032248A1/en
Withdrawn legal-status Critical Current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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
    • B01J8/0403—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the fluid flow within the beds being predominantly horizontal
    • B01J8/0423—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the fluid flow within the beds being predominantly horizontal through two or more otherwise shaped beds
    • B01J8/0438—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the fluid flow within the beds being predominantly horizontal through two or more otherwise shaped beds the beds being placed next to each other
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
    • B01J8/0492—Feeding reactive fluids
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
    • B01J8/0496—Heating or cooling the reactor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
    • 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
    • B01J2208/00504—Controlling the temperature by means of a burner
    • 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
    • C01B2203/0205—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
    • C01B2203/0238—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a carbon dioxide 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
    • C01B2203/06—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
    • C01B2203/12—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
    • 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
    • C01B2203/1276—Mixing of different feed components
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • 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
    • Y02P20/141—Feedstock

Definitions

  • the invention relates to a reformer for a fuel cell system, comprising an oxidation zone, which fuel is supplied by means of a primary fuel supply for reaction with oxidizing agent, and a downstream of the oxidation zone arranged mixing zone, which fuel by means of a secondary fuel supply means for mixing with emerging from the oxidation zone substances can be fed.
  • the invention relates to a fuel cell system with such a reformer.
  • Reformers serve to convert hydrocarbons and oxidants to reformate, i. a hydrogen-rich gas mixture.
  • the object of the present invention is to provide generic reformer and fuel cell systems with such - -
  • the reformer according to the invention builds on the generic state of the art in that the primary and the secondary fuel supply are of identical construction. This results in cost savings in two ways. On the one hand, it is more cost-effective to produce only one type of fuel supply device and, on the other hand, further cost savings can be realized by a piece-rate effect because twice as many fuel supply devices of the remaining type are required and the unit price decreases with increasing unit number. It has thus been recognized that the design of the reformer in such a way that it can be equipped with identically constructed fuel feeders is more rational than a differently oriented design, which requires individual selection and adaptation of the fuel feed devices. The equipping with identical fuel supply devices may even be advantageous in view of the fact that quite different physical and chemical ambient conditions exist in the area of the two fuel supply devices and quite different feed rates are to be selected.
  • a per se advantageous individual design of the individual fuel supply devices may be of less benefit, with the appropriate design of the reformer and the reforming process, than the benefits of is achieved by the mentioned piece count effect. Further advantages can be seen in the unified storage, both in production and in the workshop.
  • the primary and the secondary fuel supply are fuel injection nozzles.
  • the above-mentioned advantages may be achieved in the context that the primary and secondary fuel supply means are evaporation type fuel supply devices.
  • the invention relates to a fuel cell system with such a reformer.
  • Figure 1 is a schematic representation of an embodiment of the inventive reformer.
  • FIG. 1 shows a schematic representation of an embodiment of the reformer according to the invention.
  • a reformer 10 comprises an oxidation zone 12, which can be supplied with fuel by means of a primary fuel feed device 14.
  • fuel for example, gasoline or diesel come into consideration.
  • this primary fuel supply device 14 is an injection nozzle, but the fuel can also be supplied by means of a fuel supply.
  • Evaporating type guide device having a porous evaporator unit the oxidation zone 12 are supplied.
  • an oxidizing agent supply device 16 is provided, by means of which oxidizing agent, ie, in particular air, can be fed to the oxidation zone 12.
  • oxidizing agent ie, in particular air
  • Reformers are graphically separated by dashed lines.
  • the zones may be separated from one another by structural features or may merge into each other.
  • additional fuel is added to the resulting product gas by means of a secondary fuel supply device 20.
  • the mixing zone 18 is supplied with oxidizing agent.
  • the product gas mixed with the additional fuel enters a reforming zone 22 as a gas mixture, where it is converted into a hydrogen-rich gas mixture in an endothermic reaction, preferably by means of a catalyst arranged there.
  • This hydrogen-rich gas mixture exits at an outlet 24 and is available for further use for a fuel cell stack.
  • the primary and secondary BrennstoffZu2009 coupled are inventively identical.
  • the primary and secondary fuel supply devices 14 and 20 are designed as replaceable units, which can be installed equally in the assembly position for the primary and the secondary fuel supply device.

Abstract

The invention relates to a reformer (10) for a fuel cell system, comprising an oxidation zone (12), to which fuel can be fed by means of a primary fuel supply unit (14) in order to be reacted with oxidants, and a mixing zone (18), which is situated downstream of the oxidation zone (12) and to which fuel can be fed by means of a secondary fuel supply unit (20) in order to be mixed with substances exiting the oxidation zone (12). The invention is characterised in that the primary and secondary fuel supply units (14, 20) have an identical construction. The invention also relates to a fuel cell system comprising a reformer (10) of this type.

Description

Reformer für ein BrennstoffzellensystemReformer for a fuel cell system
Die Erfindung betrifft einen Reformer für ein Brennstoff- zellensystem, umfassend eine Oxidationszone, welcher Brennstoff mittels einer primären Brennstoffzuführeinrichtung zur Umsetzung mit Oxidationsmittel zuführbar ist, und eine stromabwärts der Oxidationszone angeordnete Mischzone, welcher Brennstoff mittels einer sekundären Brennstoffzuführeinrichtung zur Vermischung mit aus der Oxidationszone austretenden Stoffen zuführbar ist.The invention relates to a reformer for a fuel cell system, comprising an oxidation zone, which fuel is supplied by means of a primary fuel supply for reaction with oxidizing agent, and a downstream of the oxidation zone arranged mixing zone, which fuel by means of a secondary fuel supply means for mixing with emerging from the oxidation zone substances can be fed.
Darüber hinaus betrifft die Erfindung ein Brennstoffzellensystem mit solch einem Reformer.Moreover, the invention relates to a fuel cell system with such a reformer.
Reformer dienen der Umsetzung von Kohlenwasserstoffen und Oxidationsmittel zu Reformat, d.h. einem wasserstoffreichen Gasgemisch.Reformers serve to convert hydrocarbons and oxidants to reformate, i. a hydrogen-rich gas mixture.
Bisher wurden in gattungsgemäßen Reformern der zweistufigen Bauart Brennstoffzuführeinrichtungen verwendet, die auch bei herkömmlichen Brennern zum Einsatz kommen, beispielsweise bei Brennern von Kraftfahrzeugstandheizungen. Dabei wurde auf vorhandene und räumlich passende Bauteile zurückgegriffen, wobei für jede Brennstoffzuführstufe eine individuelle Auswahl und Anpassung der Brennstoffzuführeinrichtung erforderlich war. Ein derartiger Reformer ist beispielsweise in der DE 103 59 205 Al offenbart.So far, fuel feeders have been used in generic reformers of the two-stage design, which are also used in conventional burners used, for example, in burners of motor vehicle parking heaters. It was resorted to existing and spatially appropriate components, with each fuel feed an individual selection and adjustment of the fuel supply was required. Such a reformer is disclosed, for example, in DE 103 59 205 A1.
Die Aufgabe der vorliegenden Erfindung besteht darin, gattungsgemäße Reformer und Brennstoffzellensysteme mit solch - -The object of the present invention is to provide generic reformer and fuel cell systems with such - -
einem Reformer derart weiterzubilden, dass Kosteneinsparungen erzielbar sind.To educate a reformer so that cost savings can be achieved.
Diese Aufgabe wird durch den Reformer gemäß Anspruch 1 und das Brennstoffzellensystem gemäß Anspruch 4 gelöst.This object is achieved by the reformer according to claim 1 and the fuel cell system according to claim 4.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.
Der erfindungsgemäße Reformer baut auf dem gattungsgemäßen Stand der Technik dadurch auf, dass die primäre und die sekundäre Brennstoffzuführeinrichtung baugleich ausgeführt sind. Dadurch ergeben sich Kosteneinsparungen in zweifacher Hinsicht. Zum einen ist es kostengünstiger, nur eine Bauart an Brennstoffzuführeinrichtungen herzustellen und zum anderen können weitere Kosteneinsparungen durch einen Stückzahleffekt realisiert werden, weil dadurch doppelt so viele Brennstoffzuführeinrichtungen der verbliebenen Bauart benötigt werden und sich der Stückpreis mit zunehmender Stück- zahl verringert. Es wurde somit erkannt, dass die Auslegung des Reformers derart, dass er mit baugleichen Brennstoffzuführeinrichtungen bestückt werden kann, rationeller ist, als eine andersweitig orientierte Auslegung, die eine individuelle Auswahl und Anpassung der Brennstoffzuführeinrich- tungen erforderlich macht. Die Bestückung mit baugleichen Brennstoffzuführeinrichtungen kann sogar angesichts der Tatsache vorteilhaft sein, dass im Bereich der beiden Brennstoffzuführeinrichtungen durchaus unterschiedliche physikalische und chemische Umgebungsbegingungen vorliegen und durchaus unterschiedliche Zuführraten zu wählen sind.The reformer according to the invention builds on the generic state of the art in that the primary and the secondary fuel supply are of identical construction. This results in cost savings in two ways. On the one hand, it is more cost-effective to produce only one type of fuel supply device and, on the other hand, further cost savings can be realized by a piece-rate effect because twice as many fuel supply devices of the remaining type are required and the unit price decreases with increasing unit number. It has thus been recognized that the design of the reformer in such a way that it can be equipped with identically constructed fuel feeders is more rational than a differently oriented design, which requires individual selection and adaptation of the fuel feed devices. The equipping with identical fuel supply devices may even be advantageous in view of the fact that quite different physical and chemical ambient conditions exist in the area of the two fuel supply devices and quite different feed rates are to be selected.
Eine an sich vorteilhafte individuelle Auslegung der einzelnen Brennstoffzuführeinrichtungen ist bei angepasster Auslegung des Reformers und des Reformierungsprozesses unter Umständen von geringerem Nutzen, als der Nutzen, der durch den erwähnten Stückzahleffekt erzielt wird. Weitere Vorteile sind in der vereinheitlichten Lagerhaltung zu erkennen, sowohl im Produktionsbetrieb als auch in der Werkstatt.A per se advantageous individual design of the individual fuel supply devices may be of less benefit, with the appropriate design of the reformer and the reforming process, than the benefits of is achieved by the mentioned piece count effect. Further advantages can be seen in the unified storage, both in production and in the workshop.
Dabei ist vorteilhafterweise vorgesehen, dass die primäre und die sekundäre Brennstoffzuführeinrichtung Brennstoff- einspritzdüsen sind.It is advantageously provided that the primary and the secondary fuel supply are fuel injection nozzles.
Alternativ können die vorstehend genannten Vorteile in dem Zusammenhang erreicht werden, dass die primäre und die sekundäre Brennstoffzuführeinrichtung Brennstoffzuführein- richtungen der Verdampfungsbauart sind.Alternatively, the above-mentioned advantages may be achieved in the context that the primary and secondary fuel supply means are evaporation type fuel supply devices.
Ferner betrifft die Erfindung ein Brennstoffzellensystem mit solch einem Reformer.Furthermore, the invention relates to a fuel cell system with such a reformer.
Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend mit Bezug auf die begleitende Zeichnung beispielhaft erläutert.A preferred embodiment of the invention will now be described by way of example with reference to the accompanying drawings.
Es zeigt:It shows:
Figur 1 eine schematische Darstellung eines Ausführungs- beispiels des erfindungsgemäßen Reformers.Figure 1 is a schematic representation of an embodiment of the inventive reformer.
Figur 1 zeigt eine schematische Darstellung eines Ausführungsbeispiels des erfindungsgemäßen Reformers . Ein Reformer 10 umfasst eine Oxidationszone 12, welcher mittels ei- ner primären Brennstoffzuführeinrichtung 14 Brennstoff zuführbar ist. Als Brennstoff kommen beispielsweise Benzin oder Diesel in Betracht. Im vorliegenden Beispiel ist diese primäre Brennstoffzuführeinrichtung 14 eine Einspritzdüse, jedoch kann der Brennstoff auch mittels einer Brennstoffzu- führeinrichtung der Verdampfungsbauart, die eine poröse Verdampfereinheit aufweist, der Oxidationszone 12 zugeführt werden. Ferner ist eine Oxidationsmittelzuführeinrichtung 16 vorgesehen, mittels der Oxidationsmittel, d.h. insbeson- dere Luft, der Oxidationszone 12 zuführbar ist. Innerhalb der Oxidationszone 12 findet eine Umsetzung von Brennstoff und Oxidationsmittel in einer Verbrennung bzw. exothermen vollständigen Oxidationsreaktion statt. Das dabei entstehende Produktgas tritt dann stromabwärts, d.h. rechts in Fig. 1, in eine Mischzone 18 ein. Die einzelnen Zonen desFigure 1 shows a schematic representation of an embodiment of the reformer according to the invention. A reformer 10 comprises an oxidation zone 12, which can be supplied with fuel by means of a primary fuel feed device 14. As fuel, for example, gasoline or diesel come into consideration. In the present example, this primary fuel supply device 14 is an injection nozzle, but the fuel can also be supplied by means of a fuel supply. Evaporating type guide device having a porous evaporator unit, the oxidation zone 12 are supplied. Furthermore, an oxidizing agent supply device 16 is provided, by means of which oxidizing agent, ie, in particular air, can be fed to the oxidation zone 12. Within the oxidation zone 12, conversion of fuel and oxidant takes place in a combustion or exothermic complete oxidation reaction. The resulting product gas then enters the downstream, ie right in Fig. 1, in a mixing zone 18 a. The individual zones of the
Reformers sind dabei zeichnerisch durch gestrichelte Linien voneinander getrennt . Die Zonen können durch bauliche Merkmale voneinander getrennt sein oder fließend ineinander ü- bergehen. In der Mischzone 18 wird dem entstandenen Pro- duktgas mittels einer sekundären Brennstoffzuführeinrich- tung 20 zusätzlicher Brennstoff beigemischt. Zusätzlich kann vorgesehen sein, dass der Mischzone 18 Oxidationsmittel zugeführt wird. Das mit dem zusätzlichen Brennstoff vermischte Produktgas tritt als Gasgemisch in eine Refor- mierungszone 22 ein, wo es in einer endothermen Reaktion in ein Wasserstoffreiches Gasgemisch umgesetzt wird, vorzugsweise mittels eines dort angeordneten Katalysators . Dieses wasserstoffreiche Gasgemisch tritt an einem Ausgang 24 aus und steht zur weiteren Nutzung für einen Brennstoffzellen- Stapel zur Verfügung. Die primäre und die sekundäre BrennstoffZuführeinrichtung sind erfindungsgemäß identisch aufgebaut. Dabei sind die primäre und sekundäre Brennstoffzu- führeinrichtung 14 und 20 als austauschbare Einheiten ausgebildet, welche gleichermaßen in die Montageposition für die primäre als auch die sekundäre Brennstoffzuführeinrich- tung eingebaut werden können.Reformers are graphically separated by dashed lines. The zones may be separated from one another by structural features or may merge into each other. In the mixing zone 18, additional fuel is added to the resulting product gas by means of a secondary fuel supply device 20. In addition, it can be provided that the mixing zone 18 is supplied with oxidizing agent. The product gas mixed with the additional fuel enters a reforming zone 22 as a gas mixture, where it is converted into a hydrogen-rich gas mixture in an endothermic reaction, preferably by means of a catalyst arranged there. This hydrogen-rich gas mixture exits at an outlet 24 and is available for further use for a fuel cell stack. The primary and secondary BrennstoffZuführeinrichtung are inventively identical. In this case, the primary and secondary fuel supply devices 14 and 20 are designed as replaceable units, which can be installed equally in the assembly position for the primary and the secondary fuel supply device.
Die in der vorstehenden Beschreibung, in der Zeichnung sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Korabination für die Verwirklichung der Erfindung wesentlich sein.The features of the invention disclosed in the foregoing description, in the drawings and in the claims may be essential for the realization of the invention both individually and in any Korabination.
Bezugszeichenliste:LIST OF REFERENCE NUMBERS
10 Reformer10 reformers
12 Oxidationszone12 oxidation zone
14 Primäre Brennstoffzuführeinrichtung 16 Oxidationsmittelzuführeinrichtung14 Primary fuel supply 16 Oxidant supply device
18 Mischzone18 mixing zone
20 Sekundäre Brennstoffzuführeinrichtung20 Secondary fuel supply
22 Reformierungszone22 reforming zone
24 Ausgang 24 output

Claims

ANSPRUCHE
1. Reformer (10) für ein BrennstoffZeilensystem, umfassend:A reformer (10) for a fuel cell system, comprising:
eine Oxidationszone (12) , welcher Brennstoff mittels einer primären Brennstoffzuführeinrichtung (14) zur Umsetzung mit Oxidationsmittel zuführbar ist, undan oxidation zone (12), which fuel is supplied by means of a primary fuel supply means (14) for reaction with oxidizing agent, and
eine stromabwärts der Oxidationszone (12) angeordnete Mischzone (18) , welcher Brennstoff mittels einer se- kundären Brennstoffzuführeinrichtung (20) zur Vermischung mit aus der Oxidationszone (12) austretenden Stoffen zuführbar ist,a mixing zone (18) arranged downstream of the oxidation zone (12), which fuel can be supplied by means of a secondary fuel feed device (20) for mixing with substances emerging from the oxidation zone (12),
dadurch gekennzeichnet, dass die primäre und die sekundäre Brennstoffzuführeinrichtung (14, 20) baugleich ausgeführt sind.characterized in that the primary and the secondary fuel supply means (14, 20) are constructed identical.
2. Reformer (10) gemäß Anspruch 1, dadurch gekennzeichnet, dass die primäre und die sekundäre Brennstoffzuführ- einrichtung (14, 20) Brennstoffeinspritzdüsen sind.2. Reformer (10) according to claim 1, characterized in that the primary and the secondary Brennstoffzuführ- device (14, 20) are fuel injection nozzles.
3. Reformer (10) gemäß Anspruch 1, dadurch gekennzeichnet, dass die primäre und die sekundäre Brennstoffzuführeinrichtung (14, 20) Brennstoffzuführeinrichtungen der Ver- dampfungsbauart sind.3. A reformer (10) according to claim 1, characterized in that the primary and the secondary fuel supply means (14, 20) are fuel supply devices of the evaporation type.
4. BrennstoffZellensystem mit einem Reformer (10) gemäß einem der vorhergehenden Ansprüche . 4. Fuel cell system with a reformer (10) according to one of the preceding claims.
EP07764386A 2006-06-29 2007-06-20 Reformer for a fuel cell system Withdrawn EP2032248A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006029915 2006-06-29
DE102006033441A DE102006033441B4 (en) 2006-06-29 2006-07-19 Reformer for a fuel cell system
PCT/DE2007/001085 WO2008000224A1 (en) 2006-06-29 2007-06-20 Reformer for a fuel cell system

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KR (1) KR20090005235A (en)
AU (1) AU2007264253A1 (en)
BR (1) BRPI0712586A2 (en)
CA (1) CA2653443A1 (en)
DE (1) DE102006033441B4 (en)
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WO2008000224A1 (en) 2008-01-03
DE102006033441A1 (en) 2008-01-03
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AU2007264253A1 (en) 2008-01-03
DE102006033441B4 (en) 2009-05-07

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