Patent ID: 6852144

Claim:
A process for selectively removing COS with respect to CO 2 from a hydrocarbonaceous fluid stream which contains CO 2 ; and COS comprising: intimately contacting the fluid stream in an absorption or extraction zone with a scrubbing liquor consisting of an aqueous amine solution containing from 1.5 to 5 mol/l of an aliphatic alkanolamine having of from 2 to 12 carbon atoms and from 0.8 to 1.7 mol/l of at least one activator selected from the group consisting of piperazine, methyl piperazine and morpholine, removing the COS essentially completely from the fluid stream, and separating the substantially COS-decontaminated fluid stream and the COS-loaded scrubbing liquor and discharging them from the absorption or extraction zone.