WO2008022611A2 - Système de piles à combustible et procédé pour faire fonctionner un ensemble de piles à combustible - Google Patents

Système de piles à combustible et procédé pour faire fonctionner un ensemble de piles à combustible Download PDF

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Publication number
WO2008022611A2
WO2008022611A2 PCT/DE2007/001224 DE2007001224W WO2008022611A2 WO 2008022611 A2 WO2008022611 A2 WO 2008022611A2 DE 2007001224 W DE2007001224 W DE 2007001224W WO 2008022611 A2 WO2008022611 A2 WO 2008022611A2
Authority
WO
WIPO (PCT)
Prior art keywords
fuel cell
reformate
reformer
cell system
cell stack
Prior art date
Application number
PCT/DE2007/001224
Other languages
German (de)
English (en)
Other versions
WO2008022611A3 (fr
Inventor
Matthias Boltze
Michael Rozumek
Stefan Käding
Manfred Pfalzgraf
Andreas Engl
Beate Bleeker
Michael Süßl
Markus Bedenbecker
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 WO2008022611A2 publication Critical patent/WO2008022611A2/fr
Publication of WO2008022611A3 publication Critical patent/WO2008022611A3/fr

Links

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
    • C01B3/36—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 oxygen or mixtures containing oxygen as gasifying agents
    • 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
    • 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
    • C01B2203/06—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
    • C01B2203/1235—Hydrocarbons
    • 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
    • C01B2203/141—At least two reforming, decomposition or partial oxidation steps in parallel
    • 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

Definitions

  • the invention relates to a fuel cell system with a reformer for supplying reformate to a fuel cell stack.
  • Fuel cell systems are used to generate electricity and heat from hydrocarbons, such as diesel or gasoline.
  • a reformer is usually used, to which fuel and air are supplied.
  • the reformer supplies as starting material the desired hydrogen-rich reformate, which is then processed in the fuel cell stack with further reaction with air.
  • the depleted in the fuel cell stack reformate can then be fed to an afterburner, in which, with further use of air, the residual energy is converted into heat; this heat can then be returned to the system.
  • the object of the invention is to design a fuel cell system and a method for operating a fuel cell system in such a way that increased power requirements can be met without delay and without the need for a high-performance battery.
  • the invention is based on the generic fuel cell system in that at least one further device for supplying reformate to the fuel cell stack is provided.
  • the additional amount of gas required for the provision of the increased power can thus be made available in a very short time, without this having to be accomplished solely by the previously operated reformer.
  • the reformer and the further device are connected to the same reformate feed of the fuel cell stack.
  • the reformer is thus too. the further device connected in parallel, so that these components occupy circuit-technically equivalent positions.
  • the further device comprises a further reformer.
  • a further reformer for example, is maintained at the same temperature level during continuous operation as the primary reformer. If there is a higher performance requirement, the other reformer would immediately be available to provide additional reformat in parallel with the primary reformer.
  • the reformers are designed for different operating points.
  • the additional reformer which in itself is used for satisfying higher load requirements, can thus bring the additional advantage that it can optionally be used for the primary reformer, namely when it is optimized for a different operating point than the primary reformer.
  • the system can thus either use one or the other reformer or, if the power requirement is very high, both reformers.
  • the device comprises a reformate memory.
  • a reformate memory Such a memory can be charged during normal operation of the fuel cell system, that is filled with reformate. If the power requirement is increased, this reformate can then be taken out of the store, which discharges the store.
  • the reformate memory is connected via a switchable valve with the same common reflection. is connected to the format Zubuch the fuel cell stack as the reformer and that in the common Reformatzuive- tion a pressure increasing valve is provided, which allows a filling of the Reformat acidss to a pressure that exceeds the pressure between pressure increasing valve and fuel cell stack.
  • the pressure increasing valve in the common reformate supply provides a throttling action toward the fuel cell stack in the activated state.
  • the Reformat1:00 can be filled with a gas pressure, the gas pressure in the direction
  • the invention is based on the generic method characterized in that at an increased power requirement reformate is supplied to the fuel cell stack by a further device.
  • reformate is supplied to the fuel cell stack by a further device.
  • the further device comprises a further reformer which is activated with increased power requirement. It can also be provided that the device comprises a reformate memory which is charged at a low power requirement and is discharged at an increased power requirement.
  • the invention is developed in a particularly advantageous manner by the fact that for loading the Reformat boatss a pressure increase valve in the Reformat1:00 and the reformer common ReformatZu Unit is activated, so that a filling of the Reformat acidss is allowed to a pressure that exceeds the pressure between the pressure increase valve and fuel cell stack, in that a shut-off valve, which is provided in a line connecting the common reformate feed with the reformate store, is closed to terminate the loading of the reformate store, and in that the shut-off valve is opened in the deactivated state of the pressure increase valve to discharge the reformate store.
  • Figure 1 is a schematic representation of a first embodiment of a fuel cell system according to the invention.
  • FIG. 2 is a schematic representation of a second embodiment of a fuel cell system according to the invention.
  • like reference characters designate like or similar components.
  • FIG. 1 shows a schematic representation of a first embodiment of a fuel cell system according to the invention.
  • the fuel cell system has a reformer 10, which is supplied by means of a fuel pump 32 and a blower 34 with fuel or air.
  • reformate 12 is produced, which is supplied to a fuel cell stack 14 via a format feed 28.
  • the fuel cell stack 14 is further supplied by a Katoden Kunststoffgebläse 36 cathode air.
  • the fuel cell stack 14 leaves depleted reformate 38, which is oxidized using afterburner air, which is introduced into a reheater 42 by a blower 40 in addition to the depleted reformate 38.
  • the afterburner 42 exits exhaust 44, which contains low levels of CO and NO and is thus low in undesirable emissions.
  • a further reformer 16 is arranged parallel to the primary reformer 10, which is also supplied via a fuel pump 18 and an air blower 20.
  • the always tempered reformer 16 is switched on, so as to meet the increased power requirements without delay.
  • the reformers 10, 16 are designed differently with regard to their operating point. For example, either one reformer or the other reformer can be used, or with high performance requirements, both reformers can be operated in parallel. the.
  • the reformers are designed for operation with different fuels. On this basis, a system capable of operating with different fuels is available, and in the event that different fuels are available, the demands for increased power demand can be fulfilled without delay.
  • FIG. 2 shows a schematic representation of a second embodiment of a fuel cell system according to the invention.
  • a reformate memory 22 is connected in parallel to the primary reformer 10.
  • the reformate storage 22 is filled with the reformate 10 generated in the reformer, that is brought to a certain pressure level.
  • a pressure increasing valve 26 is activated, which is arranged in the reformer 10 common to the reformer 10 and the reformate accumulator 22.
  • the reformate reservoir 22 can be filled to a pressure level which, with the pressure-increasing valve deactivated, is sufficient to allow reformate to flow over from the format memory 22 into the fuel cell stack 14.
  • a valve 24 is closed which is arranged in a line 30 connecting the common reformate feed 28 to the reformate reservoir 22. If reformate 22 is to be reformed, this valve 24 is opened and reformate can flow into the fuel cell stack when pressure-increasing valve 26 is deactivated and corresponding pressure conditions are reached.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un système de piles à combustible comprenant un reformeur (10) qui fournit un reformat (12) à un empilement de piles à combustible (14). Selon l'invention, au moins un autre dispositif (16, 18, 20, 22, 24, 26) fournit du reformat (12) à l'empilement de piles à combustible (14). L'invention porte également sur procédé pour faire fonctionner un système de piles à combustible.
PCT/DE2007/001224 2006-08-23 2007-07-10 Système de piles à combustible et procédé pour faire fonctionner un ensemble de piles à combustible WO2008022611A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006039527A DE102006039527A1 (de) 2006-08-23 2006-08-23 Brennstoffzellensystem und Verfahren zum Betreiben eines Brennstoffzellensystems
DE102006039527.1 2006-08-23

Publications (2)

Publication Number Publication Date
WO2008022611A2 true WO2008022611A2 (fr) 2008-02-28
WO2008022611A3 WO2008022611A3 (fr) 2008-04-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/001224 WO2008022611A2 (fr) 2006-08-23 2007-07-10 Système de piles à combustible et procédé pour faire fonctionner un ensemble de piles à combustible

Country Status (2)

Country Link
DE (1) DE102006039527A1 (fr)
WO (1) WO2008022611A2 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193218A1 (fr) * 2000-09-28 2002-04-03 Peugeot Citroen Automobiles SA Générateur d'hydrogène et procédé de génération d'hydrogène pour l'alimentation d'une pile à combustile
DE10139608A1 (de) * 2001-08-11 2003-02-27 Ballard Power Systems Brennstoffzellenanlage mit einem Gaserzeugungssystem und einem Brennstoffzellensystem
US20030134166A1 (en) * 2002-01-11 2003-07-17 Skala Glenn W. Dynamic fuel processor mechanization and control
FR2879026A1 (fr) * 2004-12-08 2006-06-09 Renault Sas Systeme de generation d'energie electrique embarque sur un vehicule automobile equipe d'une pile a combustible et procede associe
US20060147768A1 (en) * 2002-12-24 2006-07-06 Fabien Boudjemaa System for reformation of fuel for supply to a fuel cell on a motor vehicle and method for operation thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10039797B4 (de) * 2000-08-16 2010-12-30 Robert Bosch Gmbh Brennstoffzellenanlage mit einer Reformereinheit und deren Verwendung
DE10044786A1 (de) * 2000-09-11 2002-04-04 Emitec Emissionstechnologie Brennstoffzellenanlage und Verfahren zum Betreiben einer Brennstoffzellenanlage
JP2006040597A (ja) * 2004-07-23 2006-02-09 Mitsubishi Heavy Ind Ltd ガス供給システム、エネルギ供給システム及びガス供給方法
DE102004063151A1 (de) * 2004-12-22 2006-07-06 Webasto Ag Reformer für eine Brennstoffzelle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193218A1 (fr) * 2000-09-28 2002-04-03 Peugeot Citroen Automobiles SA Générateur d'hydrogène et procédé de génération d'hydrogène pour l'alimentation d'une pile à combustile
DE10139608A1 (de) * 2001-08-11 2003-02-27 Ballard Power Systems Brennstoffzellenanlage mit einem Gaserzeugungssystem und einem Brennstoffzellensystem
US20030134166A1 (en) * 2002-01-11 2003-07-17 Skala Glenn W. Dynamic fuel processor mechanization and control
US20060147768A1 (en) * 2002-12-24 2006-07-06 Fabien Boudjemaa System for reformation of fuel for supply to a fuel cell on a motor vehicle and method for operation thereof
FR2879026A1 (fr) * 2004-12-08 2006-06-09 Renault Sas Systeme de generation d'energie electrique embarque sur un vehicule automobile equipe d'une pile a combustible et procede associe

Also Published As

Publication number Publication date
DE102006039527A1 (de) 2008-02-28
WO2008022611A3 (fr) 2008-04-17

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