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System and process for polarity swing assisted regeneration of gas selective capture liquids

United States Patent

9,707,508
July 18, 2017
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A polarity swing-assisted regeneration (PSAR) process is disclosed for improving the efficiency of releasing gases chemically bound to switchable ionic liquids. Regeneration of the SWIL involves addition of a quantity of non-polar organic compound as an anti-solvent to destabilize the SWIL, which aids in release of the chemically bound gas. The PSAR decreases gas loading of a SWIL at a given temperature and increases the rate of gas release compared to heating in the absence of anti-solvent.
Heldebrant; David J. (Richland, WA), Tegrotenhuis; Ward E. (Kennewick, WA), Freeman; Charles J. (West Richland, WA), Elliott; Michael L. (Kennewick, WA), Koech; Phillip K. (Richland, WA), Humble; Paul H. (Kennewick, WA), Zheng; Feng (Richland, WA), Zhang; Jian (Richland, WA)
BATTELLE MEMORIAL INSTITUTE (Richland, WA)
13/ 224,680
20130056676
September 2, 2011
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.