Method for absorption of acid gases using amino acids

摘要

The invention is directed to a method for preparing a gas mixture depleted in gaseous acid compounds, comprising the steps of: a) contacting in a first container a gas mixture comprising gaseous acid compounds with a slurry comprising a first solution of an amino acid and a solid salt of said amino acid, thereby obtaining a slurry loaded with at least part of said acid compounds and a semi-lean gas mixture; and b) contacting in a second container said semi-lean gas mixture with a second solution of an amino acid, thereby obtaining a second solution loaded with at least part of the acid compounds from the semi-lean gas mixture and a lean gas mixture depleted in said gaseous acid compounds.