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Sour pressure swing adsorption process

United States Patent

9,808,755
November 7, 2017
View the Complete Patent at the US Patent & Trademark Office
Methods and apparatuses for separating CO.sub.2 and sulfur-containing compounds from a synthesis gas obtained from gasification of a carbonaceous feedstock. The primary separating steps are performed using a sour pressure swing adsorption (SPSA) system, followed by an acid gas enrichment system and a sulfur removal unit. The SPSA system includes multiple pressure equalization steps and a rinse step using a rinse gas that is supplied from a source other than directly from one of the adsorber beds of the SPSA system.
Bhadra; Shubhra Jyoti (Macungie, PA), Wright; Andrew David (Guildford, GB), Hufton; Jeffrey Raymond (Fogelsville, PA), Kloosterman; Jeffrey William (Allentown, PA), Amy; Fabrice (Macungie, PA), Weist, Jr.; Edward Landis (Macungie, PA)
Air Products and Chemicals, Inc. (Allentown, PA)
14/ 808,069
20170021301
July 24, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Contract Number DE-FE0013363 between Air Products and Chemicals, Inc. and the U.S. Department of Energy. The Government has certain rights to this invention.