Patent ID: 7419646
Filing Date: 2008-09-02
Classification: B01D,C10L,Y02C

Abstract:
1. A method of deacidizing a gaseous effluent comprising at least one acid compound of the group consisting of hydrogen sulfide (H 2 S), mercaptans, carbon dioxide (CO 2 ), sulfur dioxide (SO 2 ), carbon oxysulfide (COS) and carbon disulfide (CS 2 ), wherein the following stages are carried out: a) contacting the gaseous effluent with an absorbent solution so as to obtain a gaseous effluent depleted in acid compounds and an absorbent solution laden with acid compounds, the absorbent solution being selected for its property to form two separable phases when it absorbs an amount of acid compounds, b) separating the absorbent solution laden with acid compounds into two fractions: a first absorbent solution fraction depleted in acid compounds and a second absorbent solution fraction enriched in acid compounds, c) regenerating the second fraction so as to release part of the acid compounds, d) recycling the first absorbent solution fraction obtained in stage b) and the regenerated absorbent solution obtained in stage c) as the absorbent solution to stage a).