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Hydrogen generation having CO.sub.2 removal with steam reforming

United States Patent

July 28, 2015
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A method for producing hydrogen using fuel cell off gases, the method feeding hydrocarbon fuel to a sulfur adsorbent to produce a desulfurized fuel and a spent sulfur adsorbent; feeding said desulfurized fuel and water to an adsorption enhanced reformer that comprises of a plurality of reforming chambers or compartments; reforming said desulfurized fuel in the presence of a one or more of a reforming catalyst and one or more of a CO.sub.2 adsorbent to produce hydrogen and a spent CO.sub.2 adsorbent; feeding said hydrogen to the anode side of the fuel cell; regenerating said spent CO.sub.2 adsorbents using the fuel cell cathode off-gases, producing a flow of hydrogen by cycling between said plurality of reforming chambers or compartments in a predetermined timing sequence; and, replacing the spent sulfur adsorbent with a fresh sulfur adsorbent at a predetermined time.
Kandaswamy; Duraiswamy (Huntington Beach, CA), Chellappa; Anand S. (Albuquerque, NM), Knobbe; Mack (Long Beach, CA)
Intelligent Energy Inc. (San Jose, CA)
13/ 324,828
December 13, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The invention was partly made with Government support under Contract No. DE-FG36-07GO17013 by the Department of Energy, and the United States Government may have certain rights in the invention.