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Method and system to reclaim functional sites on a sorbent contaminated by heat stable salts

United States Patent

March 8, 2016
View the Complete Patent at the US Patent & Trademark Office
The objective of this invention is to develop a method to reclaim functional sites on a CO.sub.2 sorbent that have reacted with an acid gas (other than CO.sub.2) to form heat stable salts (HSS). HSS are a significant concern for dry sorbent based CO.sub.2 capture because over time the buildup of HSS will reduce the overall functionality of the CO.sub.2 sorbent. A chemical treatment can remove the non-CO.sub.2 acid gas and reclaim functional sites that can then be used for further CO.sub.2 adsorption.
Krutka; Holly (Centennial, CO), Sjostrom; Sharon (Sedalia, CO), Morris; William J. (Evergreen, CO)
ADA-ES, Inc. (Highlands Ranch, CO)
14/ 032,030
September 19, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Contract No. DE-FE0004343 awarded by the U.S. Department of Energy.