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System and process for capture of H.sub.2S from gaseous process streams and process for regeneration of the capture agent

United States Patent

February 18, 2014
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A system and process are disclosed for selective removal and recovery of H.sub.2S from a gaseous volume, e.g., from natural gas. Anhydrous organic, sorbents chemically capture H.sub.2S gas to form hydrosulfide salts. Regeneration of the capture solvent involves addition of an anti-solvent that releases the captured H.sub.2S gas from the capture sorbent. The capture sorbent and anti-solvent are reactivated for reuse, e.g., by simple distillation.
Heldebrant; David J. (Richland, WA), Koech; Phillip K. (Richland, WA), Rainbolt; James E. (Richland, WA), Bearden; Mark D. (Richland, WA), Zheng; Feng (Richland, WA)
Battelle Memorial Institute (Richland, WA)
12/ 972,125
December 17, 2010
STATEMENT REGARDING RIGHTS TO INVENTION MADE UNDER FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT This invention was made with Government support under Contract DE-AC05-76RL01830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.