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Sour Pressure Swing Adsorption Process

United States Patent Application

View the Complete Application 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)
14/ 808,069
July 24, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] 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.