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Method for thermal swing adsorption and thermally-enhanced pressure swing adsorption

United States Patent

October 7, 2003
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.
Wegeng; Robert S. (Richland, WA), Rassat; Scot D. (Benton City, WA), Stenkamp; Victoria S. (Richland, WA), TeGrotenhuis; Ward E. (Kennewick, WA), Matson; Dean W. (Kennewick, WA), Drost; M. Kevin (Corvallis, OR), Viswanathan; Vilayanur V. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
09/ 845,776
April 30, 2001
This invention was made with Government support under contract DE-AC0676RLO 1830 awarded by the U.S. Department of Energy. The Government has certain rights in this invention.