Patent ID: 7591879
Filing Date: 2009-09-22
Classification: B01D

Abstract:
1. A method for operating a rapid cycle pressure swing adsorption (RCPSA) system having a cycle time, t TOT , to separate a feed gas into product gas and tail (exhaust) gas with a high rate of recovery, comprising: (a) passing said feed gas having purity F % into a sorbent bed for time, t (b) co-currently depressurizing said bed for a time, t (c) counter-currently depressurizing said bed for a time, t (d) purging said bed for a time, t (e) repressurizing the bed for a time, t the cycle time, t TOT , is equal to the sum of the individual cycle times comprising the total cycle time, and, wherein such that the rate of recovery, R %>80% for a product purity to feed purity ratio, P %/F %≧1.1, and/or a rate of recovery, R %>90% for a product purity to feed purity ratio, 0<P %/F %<1.1.