Patent ID: 8282899
Filing Date: 2012-10-09
Classification: B01D,Y02C

Abstract:
1. A two-stage gas purification process comprising: a) contacting an impure feed gas stream comprising methane and CO b) providing a second stage solvent effluent bottoms stream and contacting the first stage solvent effluent bottoms stream and a recycled vapor fraction of the second stage solvent effluent bottoms stream in a counter-current stripper to provide a second methane-enriched overhead gas stream; c) flash separating the second stage solvent effluent bottoms stream in one or more flash separators to provide (i) one or more vapor fractions of the second stage solvent effluent bottoms stream and (ii) a gas-depleted liquid fraction of the second stage solvent effluent bottoms stream; and d) recovering a purified CO