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System for adding sulfur to a fuel cell stack system for improved fuel cell stability

United States Patent

August 13, 2013
View the Complete Patent at the US Patent & Trademark Office
A system for adding sulfur to a reformate stream feeding a fuel cell stack, having a sulfur source for providing sulfur to the reformate stream and a metering device in fluid connection with the sulfur source and the reformate stream. The metering device injects sulfur from the sulfur source to the reformate stream at a predetermined rate, thereby providing a conditioned reformate stream to the fuel cell stack. The system provides a conditioned reformate stream having a predetermined sulfur concentration that gives an acceptable balance of minimal drop in initial power with the desired maximum stability of operation over prolonged periods for the fuel cell stack.
Mukerjee; Subhasish (Pittsford, NY), Haltiner, Jr.; Karl J (Fairport, NY), Weissman; Jeffrey G. (West Henrietta, NY)
Delphi Technologies, Inc. (Troy, MI)
13/ 357,774
January 25, 2012
GOVERNMENT-SPONSORED STATEMENT This invention was made with the United States Government support under Contract DE-FC26-02NT41246 awarded by the U.S. Department of Energy. The Government has certain rights in this invention.