Regenerable method and system for desulfurizing reformate

Details Regenerable method and system for desulfurizing reformate Regenerable method and system for desulfurizing reformate

2011-04-26

2011-04-26

Neckel, Alexa D (Department: 1723)

Gas: heating and illuminating

Generators

C048S1970FM, C422S129000, C422S168000, C422S177000, C422S180000

Reexamination Certificate

active

07931707

ABSTRACT:
A system for removing sulfur from a continuous reformate stream feeding a fuel cell stack. First and second sulfur traps are disposed in parallel between a hydrocarbon reformer and the fuel cell stack. The ends of the sulfur traps are connected to conventional four-way valves such that either trap may be selected for trapping sulfur from the reformate stream, while the other trap is undergoing regeneration by backflushing the accumulated adsorbed sulfur deposits. Thus, the sulfur traps may be used and stripped alternately, permitting continuous supply of desulfurized reformate to the fuel cell assembly. In a currently preferred embodiment, the hot cathode air exhaust is used to assist in stripping the out-of-service trap. In an alternative embodiment, two reformers are provided and the reformers are alternately regenerated along with their respective traps.

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patent: 11159322 (1999-06-01), None
JPO Machine Translation of JP11-159322 (translated Jun. 24, 2009).

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