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:
- Issue Date:
- Research Org.:
- Delphi Technologies, Inc., Troy, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1531547
- Patent Number(s):
- 7326482
- Application Number:
- 10/793,302
- Assignee:
- Delphi Technologies, Inc. (Troy, MI)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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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