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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):
7,001,682
Application Number:
10/178,863
Assignee:
Delphi Technologies, Inc. (Troy, MI)
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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