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Fast regeneration of sulfur deactivated Ni-based hot biomass syngas cleaning catalysts

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A new regeneration method has been developed which can effectively and efficiently remove sulfur from Ni-based steam reforming catalysts. In its simplest form the present invention comprises the steps of oxidizing a catalyst with a dilute O.sub.2 stream; decomposing the nickel sulfate under inert gas stream and removing sub-surface sulfur under steam reforming conditions. In some embodiments these steps can all be accomplished and the regenerated catalyst be reintroduced to a steam reforming operation in a matter of eight hours or less.
Li, Liyu (Richland, WA), Howard, Christopher J. (Richland, WA), King, David L. (Richland, WA), Gerber, Mark A. (Richland, WA), Dagle, Robert A. (Richland, WA), Stevens, Don J. (Kennewick, WA)
12/ 856,239
August 13, 2010
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT [0002] This invention was made with Government support under Contract DE-AC0576RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.