Skip to Content
Find More Like This
Return to Search

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

United States Patent

March 6, 2012
View the Complete Patent at the US Patent & Trademark Office
A system for adding sulfur to a fuel cell stack, having a reformer adapted to reform a hydrocarbon fuel stream containing sulfur contaminants, thereby providing a reformate stream having sulfur; a sulfur trap fluidly coupled downstream of the reformer for removing sulfur from the reformate stream, thereby providing a desulfurized reformate stream; and a metering device in fluid communication with the reformate stream upstream of the sulfur trap and with the desulfurized reformate stream downstream of the sulfur trap. The metering device is adapted to bypass a portion of the reformate stream to mix with the desulfurized reformate stream, thereby producing 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/ 074,589
March 29, 2011
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.