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Title: Apparatus and method for operation of a high temperature fuel cell system using recycled anode exhaust

Abstract

A method for improving the efficiency of a hydrocarbon catalytic reformer and close-coupled fuel cell system by recycling a percentage of the anode exhaust syngas directly into the reformer in a range between about 20% and about 60%. Oxygen is supplied to the reformer at start-up. Under equilibrium conditions, oxygen required for reforming of hydrocarbon fuel is derived entirely from endothermic reforming of water and carbon dioxide in the recycled syngas. Recycling of anode syngas into the reformer increases fuel efficiency, adds excess water to the reformate to increase protection against anode coking, and protects the fuel cell stack against air- and water-borne contaminants. A method for producing an excess amount of syngas for exporting for other purposes is also provided.

Inventors:
; ; ;
Publication Date:
Research Org.:
Delphi Technologies, Inc., Troy, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531547
Patent Number(s):
7,326,482
Application Number:
10/793,302
Assignee:
Delphi Technologies, Inc. (Troy, MI)
DOE Contract Number:  
FC26-02NT41246
Resource Type:
Patent
Resource Relation:
Patent File Date: 2004-03-04
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 10 SYNTHETIC FUELS; 42 ENGINEERING; 30 DIRECT ENERGY CONVERSION

Citation Formats

Haltiner, Jr., Karl J., Grieve, Malcolm J., Keegan, Kevin R., and Schumann, David R. Apparatus and method for operation of a high temperature fuel cell system using recycled anode exhaust. United States: N. p., 2008. Web.
Haltiner, Jr., Karl J., Grieve, Malcolm J., Keegan, Kevin R., & Schumann, David R. Apparatus and method for operation of a high temperature fuel cell system using recycled anode exhaust. United States.
Haltiner, Jr., Karl J., Grieve, Malcolm J., Keegan, Kevin R., and Schumann, David R. Tue . "Apparatus and method for operation of a high temperature fuel cell system using recycled anode exhaust". United States. https://www.osti.gov/servlets/purl/1531547.
@article{osti_1531547,
title = {Apparatus and method for operation of a high temperature fuel cell system using recycled anode exhaust},
author = {Haltiner, Jr., Karl J. and Grieve, Malcolm J. and Keegan, Kevin R. and Schumann, David R.},
abstractNote = {A method for improving the efficiency of a hydrocarbon catalytic reformer and close-coupled fuel cell system by recycling a percentage of the anode exhaust syngas directly into the reformer in a range between about 20% and about 60%. Oxygen is supplied to the reformer at start-up. Under equilibrium conditions, oxygen required for reforming of hydrocarbon fuel is derived entirely from endothermic reforming of water and carbon dioxide in the recycled syngas. Recycling of anode syngas into the reformer increases fuel efficiency, adds excess water to the reformate to increase protection against anode coking, and protects the fuel cell stack against air- and water-borne contaminants. A method for producing an excess amount of syngas for exporting for other purposes is also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {2}
}

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Works referenced in this record:

Molten carbonate fuel cell sulfur scrubber and method using same
patent, May 1994


Fuel cell electric power production
patent, June 1985


    Works referencing / citing this record:

    Anode exhaust recycle system
    patent, September 2013


    Fuel cell system operating process
    patent, January 2014


    Fuel cell system operated on liquid fuels
    patent, September 2014