Retention of amines in the removal of acid gases by means of amine absorbents

摘要

In a method for removing acid gases from a fluid stream, a) the fluid stream is treated in an absorption zone with an absorbent that comprises an aqueous solution of at least one amine, b) the treated fluid stream is conducted through at least two wash zones and is treated with a non-acidic aqueous phase in order to transfer entrained amine and/or entrained amine decomposition products at least in part into the aqueous phase, wherein aqueous phase is recycled through at least one wash zone and aqueous phase is conducted through at least one wash zone without recycling. The method permits an efficient retention of amines from the treated fluid streams.