Skip to Content
Find More Like This
Return to Search

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

United States Patent

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)
13/ 224,680
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.