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Solid oxide fuel cell process and apparatus

United States Patent

November 15, 2011
View the Complete Patent at the US Patent & Trademark Office
Conveying gas containing sulfur through a sulfur tolerant planar solid oxide fuel cell (PSOFC) stack for sulfur scrubbing, followed by conveying the gas through a non-sulfur tolerant PSOFC stack. The sulfur tolerant PSOFC stack utilizes anode materials, such as LSV, that selectively convert H.sub.2S present in the fuel stream to other non-poisoning sulfur compounds. The remaining balance of gases remaining in the completely or near H.sub.2S-free exhaust fuel stream is then used as the fuel for the conventional PSOFC stack that is downstream of the sulfur-tolerant PSOFC. A broad range of fuels such as gasified coal, natural gas and reformed hydrocarbons are used to produce electricity.
Cooper; Matthew Ellis (Morgantown, WV), Bayless; David J. (Athens, OH), Trembly; Jason P. (Durham, NC)
Ohio University (Athens, OH)
12/ 294,337
March 28, 2007
STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT This invention was made with Government support under contract awarded by the United States Department of Energy. The Government has certain rights in the invention.