Patent ID: 7585479
Filing Date: 2009-09-08
Classification: B01D,Y02E

Abstract:
1. Method of deacidizing a gaseous effluent comprising at least one of the acid compounds as follows: H 2 S, mercaptans, CO 2 , COS, SO 2 , CS 2 , using an absorbent solution comprising reactive compounds with at least two amine functions, wherein the following stages are carried out: a) contacting the gaseous effluent with a first fraction of the absorbent solution, so as to obtain a gaseous effluent depleted in acid compounds and a liquid effluent laden with acid compounds, b) contacting the liquid effluent obtained in stage a) with a second fraction of absorbent solution laden with molecules more acid than the acid compounds, so as to cause formation of a first liquid phase depleted in acid compounds and of a second liquid phase enriched in acid compounds and laden with more acid molecules, c) separating the first phase from the second phase, d) regenerating the second phase so as to release a gas stream rich in compounds and a liquid stream poor in acid compounds and laden with more acid molecules.