Patent ID: 8211213
Filing Date: 2012-07-03
Classification: B01D,C01B,Y02C,Y02P

Abstract:
1. A process for separation, recovery and utilization of gas streams comprising sulfur compounds, carbon dioxide and carbon monoxide from a synthesis gas comprising an unshifted synthesis gas or a partially shifted synthesis gas produced from high pressure partial oxidation of a hydrocarbonaceous reactant while removing carbon monoxide from said gas streams and concentrating said CO in an unshifted or partially shifted synthesis gas stream, said process comprising: a) contacting the synthesis gas with a first liquid solvent in a first carbon dioxide absorber to selectively absorb and remove at least a portion of carbon dioxide from the synthesis gas and to produce a purified synthesis gas; b) sending a portion of said first liquid solvent and a slip stream from a treated fully shifted synthesis gas to a carbon monoxide stripping column to remove carbon monoxide, c) returning carbon monoxide to said first carbon dioxide absorber; and d) then removing said carbon dioxide from said first liquid solvent to produce a carbon dioxide product stream.