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1. WO2011006964 - METHOD FOR OPERATING A HIGH-TEMPERATURE FUEL CELL

Publication Number WO/2011/006964
Publication Date 20.01.2011
International Application No. PCT/EP2010/060214
International Filing Date 15.07.2010
IPC
H01M 8/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
H01M 8/06 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
06Combination of fuel cells with means for production of reactants or for treatment of residues
CPC
H01M 2008/1293
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
10Fuel cells with solid electrolytes
12operating at high temperature, e.g. with stabilised ZrO2 electrolyte
1293Fuel cells with solid oxide electrolytes
H01M 8/04097
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04082Arrangements for control of reactant parameters, e.g. pressure or concentration
04089of gaseous reactants
04097with recycling of the reactants
H01M 8/04111
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04082Arrangements for control of reactant parameters, e.g. pressure or concentration
04089of gaseous reactants
04111using a compressor turbine assembly
H01M 8/04231
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04223during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
04231Purging of the reactants
H01M 8/0618
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
06Combination of fuel cells with means for production of reactants or for treatment of residues
0606with means for production of gaseous reactants
0612from carbon-containing material
0618Reforming processes, e.g. autothermal, partial oxidation or steam reforming
Y02E 60/50
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
50Fuel cells
Applicants
  • AVL LIST GMBH [AT]/[AT] (AllExceptUS)
  • PRENNINGER, Peter [AT]/[AT] (UsOnly)
  • RECHBERGER, Jürgen [AT]/[AT] (UsOnly)
Inventors
  • PRENNINGER, Peter
  • RECHBERGER, Jürgen
Agents
  • BABELUK, Michael
Priority Data
A 1115/200916.07.2009AT
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUM BETRIEB EINER HOCHTEMPERATUR-BRENNSTOFFZELLE
(EN) METHOD FOR OPERATING A HIGH-TEMPERATURE FUEL CELL
(FR) PROCÉDÉ PERMETTANT DE FAIRE FONCTIONNER UNE PILE À COMBUSTIBLE HAUTE TEMPÉRATURE
Abstract
(DE)
Die Erfindung betrifft ein Verfahren zum Betrieb einer Hochtemperatur-Brennstoffzelle (1), welche im Normalbetrieb zur Stromerzeugung mit flüssigem Brennstoff (B), vorzugsweise Diesel, versorgt wird und anodenseitig einen Reformer (2) für den flüssigen Brennstoff vorgeschaltet hat, wobei zumindest ein Teil des heißen Anodenabgases über eine Rückführleitung (3) in den Anodenkreislauf rückgeführt wird, wobei der flüssige Brennstoff (B) stromaufwärts eines dem Reformer (2) vorgeschalteten Verdichters (4) in das heiße Anodenabgas eingesprüht oder eingespritzt wird und wobei die für die Reformierung des flüssigen Brennstoffes benötigte Luftmenge dem Gemisch aus Anodenabgas und Brennstoff zugesetzt wird. Erfindungsgemäß wird bei einem Wechsel vom Normalbetrieb in einen Standby-Betrieb ohne Stromerzeugung die Zufuhr von flüssigem Brennstoff (B) und Luft (L) gestoppt und das sich im Anodenkreislauf befindliche Gasgemisch permanent im Kreis geführt, wobei zur Beseitigung von Ablagerungen und Verunreinigungen in der Hochtemperatur-Brennstoffzelle (1) - ausgehend vom Standby-Betrieb - dem Anodenkreislauf eine definierte Luftmenge zugeführt wird.
(EN)
The invention relates to a method for operating a high-temperature fuel cell (1) which, in the normal mode for generating power, is supplied with liquid fuel (B), preferably diesel, and, at the anode end, has a reformer (2) for the liquid fuel connected upstream, wherein at least a portion of the hot anode exhaust gas is returned to the anode circuit via a return line (3), wherein the liquid fuel (B) is sprayed or injected into the hot anode exhaust gas upstream of a compressor (4) which is connected upstream of the reformer (2), and wherein the quantity of air required for reforming the liquid fuel is added to the mixture comprising anode exhaust gas and fuel. According to the invention, the supply of liquid fuel (B) and air (L) is stopped and the gas mixture located in the anode circuit is permanently circulated when a changeover is made from the normal mode to a standby mode without power generation, wherein a defined quantity of air is supplied to the anode circuit in order to remove deposits and impurities from the high-temperature fuel cell (1) – starting from the standby mode.
(FR)
L'invention concerne un procédé permettant de faire fonctionner une pile à combustible haute température (1) qui, en fonctionnement normal, est alimentée en un combustible liquide (B), de préférence du gazole, pour la production de courant, et présente côté anode un reformeur (2) du combustible liquide monté en amont. Au moins une partie du gaz d'échappement anodique chaud est remise en circulation dans le circuit anodique par l'intermédiaire d'une conduite de recirculation (3), le combustible liquide (B) étant pulvérisé ou injecté dans le gaz d'échappement anodique chaud en amont d'un compresseur (4) monté en amont du reformeur (2), et le volume d'air nécessaire au reformage du combustible liquide étant ajouté au mélange de gaz d'échappement anodique et de combustible. Selon l'invention, lors d'un passage du mode normal à un mode d'attente sans production de courant, l'alimentation en combustible liquide (B) et en air (L) est arrêtée et le mélange de gaz se trouvant dans le circuit anodique est mis en circulation permanente, une quantité d'air définie étant amenée au circuit anodique pour éliminer les dépôts et les impuretés dans la pile à combustible haute température (1), à partir du mode d'attente.
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