WO2008083657A1 - Procédé de fonctionnement d'un reformeur, système de reformage et installation à pile à combustible - Google Patents

Procédé de fonctionnement d'un reformeur, système de reformage et installation à pile à combustible Download PDF

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Publication number
WO2008083657A1
WO2008083657A1 PCT/DE2007/002297 DE2007002297W WO2008083657A1 WO 2008083657 A1 WO2008083657 A1 WO 2008083657A1 DE 2007002297 W DE2007002297 W DE 2007002297W WO 2008083657 A1 WO2008083657 A1 WO 2008083657A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
reformer
supplied
reforming system
control unit
Prior art date
Application number
PCT/DE2007/002297
Other languages
German (de)
English (en)
Inventor
Matthias Boltze
Michael Rozumek
Stefan Käding
Manfred Pfalzgraf
Andreas Engl
Beate Bleeker
Michael Süßl
Markus Bedenbecker
Stefan Kah
Andreas Lindermeir
Norbert GÜNTHER
Johannes EICHSTÄDT
Original Assignee
Webasto Ag
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 Webasto Ag filed Critical Webasto Ag
Publication of WO2008083657A1 publication Critical patent/WO2008083657A1/fr

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Classifications

    • 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
    • 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
    • C01B3/386—Catalytic partial combustion
    • 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
    • C01B2203/0261—Processes for making hydrogen or synthesis gas containing a partial oxidation step containing a catalytic partial oxidation step [CPO]
    • 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
    • C01B2203/16—Controlling the process
    • C01B2203/1614—Controlling the temperature
    • C01B2203/1619—Measuring the temperature
    • 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
    • C01B2203/16—Controlling the process
    • C01B2203/169—Controlling the feed
    • 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 method for operating a reformer for producing a hydrogen-rich reformate, wherein the reformer fuel and oxidant are supplied.
  • the invention further relates to a reforming system with a reformer and an electronic control unit, wherein the reformer fuel and oxidant are supplied.
  • the invention relates to a fuel cell system.
  • Reformers are used to produce a hydrogen-rich mixture, which is used in particular for generating electrical energy in a reformer downstream fuel cell assembly.
  • the reformer hydrocarbons are supplied as fuel and an oxidizing agent.
  • atmospheric oxygen is used as the oxidizing agent.
  • the fuels can be supplied in liquid and gaseous form, with the fuels supplied to an internal combustion engine, in particular, also being used as fuels for the reformer in the field of mobile use.
  • a reformer can be run on different fuels.
  • structurally identical reformers in systems that are designed for different fuels On the other hand, the basis can be created in this way for one and the same plant to run on different fuels without loss of efficiency.
  • a motor vehicle that is equipped with such an internal combustion engine should therefore, if possible, also have a reformer that can implement various fuels in a suitable manner.
  • the invention is based on the object of developing methods, systems and systems of the prior art in such a way that suitable reforming processes can take place with varying fuel properties.
  • the invention is based on the generic method characterized in that at least one property of the fuel supplied to the reformer is determined and that, depending on the at least one property, the quantitative ratio of supplied fuel and oxidant is adjusted.
  • a property of the fuel supplied to the reformer is first determined.
  • the air ratio can then be determined, a size that has a decisive influence on the functioning of the reformer.
  • the air ratio is closely linked to the temperature profile in the reformer, so that desired temperature profiles and thus optimized reformer operation can be provided by a suitable adjustment of the air ratio.
  • the at least one property characterizes the fuel type. It can therefore be distinguished in particular between different fuel gases, diesel and gasoline.
  • the at least one characteristic characterizes the fuel quality.
  • the fuel quality is indicated by the octane number. Comparable key figures also exist for other fuel types.
  • the at least one property characterizes the purity of the fuel.
  • diesel is sold with varying purity. This especially affects sulfur contaminants in diesel, which can affect the performance of the reformer and a fuel cell system to which the reformer belongs. If the level of sulfur impurities is known, then the operating point of the reformer can be adapted to it, in particular in view of the fact that the smallest possible sulfur deposits occur in the reformer.
  • a temperature is measured at at least two positions in the region of the reformer and the temperature information is additionally measured when the Position of the ratio of supplied fuel and oxidant is taken into account.
  • the quantitative ratio of supplied fuel and oxidant is adjusted so that the temperatures measured in the region of the reformer have the smallest possible difference.
  • the invention is further developed in a particularly advantageous manner in that the quantitative ratio of supplied fuel and oxidant is regulated on the basis of maps stored in an electronic control unit, wherein different maps for different properties of the fuel supplied to the reformer are present.
  • Such a control on the basis of characteristic maps is advisable, since the systematic dependencies between the lambda values and the operating behavior of the reformer are hardly detectable in any other way.
  • the invention is based on the generic reforming system in that at least one property of the fuel supplied to the reformer can be determined and detected by the electronic control unit and that the quantity ratio of supplied fuel and oxidant can be adjusted by the electronic control unit as a function of the at least one property ,
  • the advantages and peculiarities of the method according to the invention are implemented in the context of a reforming system. This also applies to the particularly preferred embodiments of the system specified below.
  • At least one sensor is provided for detecting the fuel quality, wherein the at least one property characterizes the fuel quality.
  • At least one sensor for detecting the purity of the fuel is provided, wherein the at least one property characterizes the purity of the fuel.
  • the reforming system according to the invention is usefully further developed in that at least two temperature sensors are provided at at least two positions in the region of the reformer and that the thus determined temperature information can be additionally taken into account in the adjustment of the ratio of supplied fuel and Oxidati- onsffen by the electronic control unit ,
  • the quantitative ratio of supplied fuel and oxidant can be adjusted by the electronic control unit so that the temperatures measured in the region of the reformer have the smallest possible difference.
  • the quantitative ratio of supplied fuel and oxidizing agent can be regulated on the basis of characteristic diagrams stored in the electronic control unit, with different characteristic diagrams being present for different properties of the fuel fed to the reformer.
  • the invention is based on the finding that the temperature level in the reformer can be adjusted by the lambda value adaptation to the type of fuel.
  • a constant supply of oxidizing agent and fuel constant conditions arise after some time, in particular with regard to the state variables of temperature and pressure.
  • a limitation is required so as not to overload the reformer, especially with regard to a catalyst. Due to the fuel-dependent lambda value adjustment, therefore, the position of the thermodynamic equilibrium and thus the temperature level in the reformer can be advantageously set, and in connection with advantageous embodiments of the invention, attention can also be paid to a homogeneous temperature profile.
  • Typical lambda values for gasoline and diesel are in the range greater than or equal to 0.35, while lambda values for natural gas are in the range greater than or equal to 0.25.
  • the invention further relates to a fuel cell system with a reforming system according to the invention.
  • the presently described reformers serve to supply low-temperature fuel cell systems with reforming, in particular those systems which are used in the mobile sector, for example for providing electrical energy for motor vehicle air conditioning systems.
  • Figure 1 is a schematic representation of a reforming system according to the invention.
  • FIG. 2 shows a flowchart for explaining a method according to the invention.
  • FIG. 1 shows a schematic representation of a reforming system according to the invention.
  • the reforming system according to the invention comprises a reformer 10, to which a fuel supply device 12 and an oxidant supply device 14 are assigned.
  • the fuel supply device 12 is generally a pump, while the Oxidantkarzu soup Anlagen 14 a Air blower is.
  • the fuel 10 and oxidizer 18 are supplied to the reformer 10.
  • After suitable implementation of these substances in the reformer 10 of the reformer 10 provides a hydrogen-rich reformate 20, which can then be fed in particular a fuel cell stack for generating electrical energy.
  • the fuel supply device 12 and the oxidant supply device 14 are controlled by an electronic control unit 22.
  • the electronic control unit 22 can also control or regulate other functions of the fuel cell system.
  • a sensor 24 is provided in the fuel supply, the output signal of the electronic control unit 22 is supplied.
  • two temperature sensors 26, 28 are arranged in the reformer 10, which also supply the determined information to the electronic control unit 22.
  • the air ratio For fine adjustment of the air ratio, that is, in particular for providing a setpoint for a Lambdarege- ment, then the from the temperature sensors 26, 28 temperatures are taken into account. If it is desired, for example, that the temperature profile in the reformer 10 is as constant as possible, the air ratio can be varied until the difference between - B -
  • FIG. 2 shows a flow chart for explaining a method according to the invention.
  • the fuel type is detected in step S02.
  • the detection of the fuel type is used here by way of example to explain the method according to the invention. It is therefore determined whether a motor vehicle is fueled, for example, with diesel or gasoline.
  • the air ratio is then set as a function of the determined type of fuel. This process may imply that only the fuel pump and / or the air blower are adjusted so that a certain air ratio is expected. However, the setting of the air ratio can also further imply that a setpoint value is provided for a lambda control, that is to say a fuel-type-dependent setpoint value, on which basis a lambda control known per se can then take place.
  • a lambda control that is to say a fuel-type-dependent setpoint value, on which basis a lambda control known per se can then take place.
  • Step S04 determines the temperature profile in the reformer, for example by detecting two temperatures at different positions. If it is subsequently determined in step S05 that the temperature profile is still unacceptable, the air ratio is varied in step S06. Following this, the temperature profile is again determined in step S04. If it is determined in step S05 that an acceptable temperature profile is present, then in step SO7 the reforming system is converted into its continuous operation. The presence of this continuous operation does not exclude that there is a permanent detection of the fuel type. This has the background that even during a progressive reformer operation, a change of Fuel can be done when, for example, a motor vehicle is refueled. Here too, it is thus possible to react if continuous testing of the fuel type takes place in the context of continuous operation, in particular in connection with a determination of the temperature profile in the reformer.

Abstract

L'invention concerne un procédé de fonctionnement d'un reformeur (10) destiné à produire un reformat (20) riche en hydrogène, ledit reformeur étant alimenté en combustible (16) et en oxydant (18). Selon la présente invention, au moins une propriété du combustible (16) introduit dans le reformeur (10) est déterminée et le rapport quantitatif entre le combustible (16) et l'oxydant (18) introduits est réglé en fonction de ladite au moins une propriété. L'invention concerne également un système de reformage et une installation à pile à combustible.
PCT/DE2007/002297 2007-01-09 2007-12-20 Procédé de fonctionnement d'un reformeur, système de reformage et installation à pile à combustible WO2008083657A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007001375A DE102007001375A1 (de) 2007-01-09 2007-01-09 Verfahren zum Betreiben eines Reformers, Reformierungssystem und Brennstoffzellenanlage
DE102007001375.4 2007-01-09

Publications (1)

Publication Number Publication Date
WO2008083657A1 true WO2008083657A1 (fr) 2008-07-17

Family

ID=39226830

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/DE2007/002094 WO2008083645A1 (fr) 2007-01-09 2007-11-19 Procédé de fonctionnement d'un reformeur, système de reformage et installation à pile à combustible
PCT/DE2007/002297 WO2008083657A1 (fr) 2007-01-09 2007-12-20 Procédé de fonctionnement d'un reformeur, système de reformage et installation à pile à combustible

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/002094 WO2008083645A1 (fr) 2007-01-09 2007-11-19 Procédé de fonctionnement d'un reformeur, système de reformage et installation à pile à combustible

Country Status (2)

Country Link
DE (1) DE102007001375A1 (fr)
WO (2) WO2008083645A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013221618A1 (de) * 2013-10-24 2015-04-30 Robert Bosch Gmbh Brennstoffzellenvorrichtung
DE102017203516A1 (de) * 2017-03-03 2018-09-06 Thyssenkrupp Ag Außenintegrierte Reformer-Steuereinheit für ein Unterseeboot

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1231665A2 (fr) * 2001-02-07 2002-08-14 Delphi Technologies, Inc. Estimation de la composition de réformat
WO2002090251A1 (fr) * 2001-02-15 2002-11-14 Delphi Technologies, Inc. Systeme reformeur et procede de reformage
EP1273552A2 (fr) * 2001-07-04 2003-01-08 Hitachi, Ltd. Dispositif de préparation d'hydrogène et système de génération d'énergie
US6641625B1 (en) * 1999-05-03 2003-11-04 Nuvera Fuel Cells, Inc. Integrated hydrocarbon reforming system and controls
DE10360031A1 (de) * 2003-01-23 2004-08-05 Arvin Technologies, Inc., Troy Mittels Gasflamme gezündeter Teiloxidationskraftstoffreformer und Verfahren zum Betreiben desselben
WO2006060999A1 (fr) * 2004-12-10 2006-06-15 Webasto Ag Procede pour regenerer un reformeur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10010069A1 (de) * 2000-03-02 2001-09-20 Xcellsis Gmbh Verfahren zum Betreiben einer Gaserzeugungsvorrichtung bzw. eines Brennstoffzellensystems, Gaserzeugungsvorrichtung und Brennstoffzellensystem
US6569551B2 (en) * 2001-01-15 2003-05-27 General Motors Corporation Oxidant injection control
DE10125588C1 (de) * 2001-05-25 2002-06-06 Webasto Thermosysteme Gmbh Zusatzheizgerät für ein Fahrzeug mit Erfassung der Brennstoffqualität
DE10142578A1 (de) * 2001-09-02 2003-04-10 Webasto Thermosysteme Gmbh System zum Erzeugen elektrischer Energie und Verfahren zum Betreiben eines Systems zum Erzeugen elektrischer Energie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6641625B1 (en) * 1999-05-03 2003-11-04 Nuvera Fuel Cells, Inc. Integrated hydrocarbon reforming system and controls
EP1231665A2 (fr) * 2001-02-07 2002-08-14 Delphi Technologies, Inc. Estimation de la composition de réformat
WO2002090251A1 (fr) * 2001-02-15 2002-11-14 Delphi Technologies, Inc. Systeme reformeur et procede de reformage
EP1273552A2 (fr) * 2001-07-04 2003-01-08 Hitachi, Ltd. Dispositif de préparation d'hydrogène et système de génération d'énergie
DE10360031A1 (de) * 2003-01-23 2004-08-05 Arvin Technologies, Inc., Troy Mittels Gasflamme gezündeter Teiloxidationskraftstoffreformer und Verfahren zum Betreiben desselben
WO2006060999A1 (fr) * 2004-12-10 2006-06-15 Webasto Ag Procede pour regenerer un reformeur

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Publication number Publication date
WO2008083645B1 (fr) 2008-09-04
DE102007001375A1 (de) 2008-07-10
WO2008083645A1 (fr) 2008-07-17

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