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Capture and release of acid-gasses with acid-gas binding organic compounds

United States Patent

March 17, 2015
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A system and method for acid-gas capture wherein organic acid-gas capture materials form hetero-atom analogs of alkyl-carbonate when contacted with an acid gas. These organic-acid gas capture materials include combinations of a weak acid and a base, or zwitterionic liquids. This invention allows for reversible acid-gas binding to these organic binding materials thus allowing for the capture and release of one or more acid gases. These acid-gas binding organic compounds can be regenerated to release the captured acid gasses and enable these organic acid-gas binding materials to be reused. This enables transport of the liquid capture compounds and the release of the acid gases from the organic liquid with significant energy savings compared to current aqueous systems.
Heldebrant; David J. (Richland, WA), Yonker; Clement R. (Kennewick, WA), Koech; Phillip K. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
12/ 427,851
April 22, 2009
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT This invention was made with Government support under Contract DE-A C0576RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.