This selective absorption of the sulphide, 1996, of a gaseous effluent by an absorbent solution of 1,2 - bis (dimethylaminoethoethoxyethane), comprising a viscosifying agent

摘要

The invention relates to a method of selectively removing hydrogen sulfide H2S from a gaseous effluent comprising at least H2S and CO2, wherein a stage of selective absorption of hydrogen sulfide over CO2 is carried out by contacting said effluent with a solution comprising (a) water and (b) at least the following diamine: 1,2-bis(2-dimethylaminoethoxy)ethane and wherein the absorption selectivity is controlled by adding (c) a viscosifying compound to the absorbent solution.