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Title: Solid-oxide fuel cell system having means for controlling tail gas combustion temperature

Abstract

In a solid-oxide fuel cell system, the fuel cell tail gas contains significant residual amounts of combustibles which are burned in a combustor with spent cathode air to reduce system emissions and to reclaim chemical energy in the form of heat, the hot exhaust being used to pre-heat air entering the fuel cell system. The tail gas combustibles content can vary widely as can the combustion temperature. When the temperature becomes unacceptably low, a control valve in the spent cathode air return is adjusted to divert a portion of the air around the combustor, thus enriching the fuel/air mixture and causing the combustion temperature to increase. When the temperature becomes unacceptably high, a control valve in the combustor fresh air supply is adjusted to provide more air, thus causing the mixture to become leaner and the combustion temperature to decrease.

Inventors:
Issue Date:
Research Org.:
Delphi Technologies, Inc., Troy, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531503
Patent Number(s):
7001682
Application Number:
10/178,863
Assignee:
Delphi Technologies, Inc. (Troy, MI)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES 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
DOE Contract Number:  
FC26-02NT41246
Resource Type:
Patent
Resource Relation:
Patent File Date: 2002-06-24
Country of Publication:
United States
Language:
English

Citation Formats

Haltiner, Jr., Karl J. Solid-oxide fuel cell system having means for controlling tail gas combustion temperature. United States: N. p., 2006. Web.
Haltiner, Jr., Karl J. Solid-oxide fuel cell system having means for controlling tail gas combustion temperature. United States.
Haltiner, Jr., Karl J. Tue . "Solid-oxide fuel cell system having means for controlling tail gas combustion temperature". United States. https://www.osti.gov/servlets/purl/1531503.
@article{osti_1531503,
title = {Solid-oxide fuel cell system having means for controlling tail gas combustion temperature},
author = {Haltiner, Jr., Karl J.},
abstractNote = {In a solid-oxide fuel cell system, the fuel cell tail gas contains significant residual amounts of combustibles which are burned in a combustor with spent cathode air to reduce system emissions and to reclaim chemical energy in the form of heat, the hot exhaust being used to pre-heat air entering the fuel cell system. The tail gas combustibles content can vary widely as can the combustion temperature. When the temperature becomes unacceptably low, a control valve in the spent cathode air return is adjusted to divert a portion of the air around the combustor, thus enriching the fuel/air mixture and causing the combustion temperature to increase. When the temperature becomes unacceptably high, a control valve in the combustor fresh air supply is adjusted to provide more air, thus causing the mixture to become leaner and the combustion temperature to decrease.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {2}
}

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Works referenced in this record:

Combustor air flow control method for fuel cell apparatus
patent, October 2001


Method and apparatus for a fuel cell propulsion system
patent, November 2001


Reformate control valve assembly for a fuel cell
patent, September 2002


Integrated fuel reformation and thermal management system for solid oxide fuel cell systems
patent, November 2002


Solid-oxide fuel cell system having an integrated air supply system
patent, August 2003


Gas diffusion mat for fuel cells
patent, September 2003


Fluid distribution surface for solid oxide fuel cells
patent, September 2003


Solid oxide fuel cell process gas sampling for analysis
patent, October 2003


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