Patent ID: 7846407
Filing Date: 2010-12-07
Classification: B01D,C10L

Abstract:
1. A method for deacidizing a gaseous mixture comprising an acid gas, comprising: contacting the gaseous mixture with an absorbent in an absorption unit, wherein the absorbent comprises an amine dissolved in a solvent at a first concentration; allowing the absorbent to absorb the acid gas to form a concentrated-amine phase, wherein the concentrated-amine phase is mechanically separable from the remaining of the absorbent and comprises a concentrated amine at a concentration higher than the first concentration and an absorbed acid gas, wherein the concentrated amine comprises the amine or the amine having a chemical modification, and the absorbed acid gas comprises the acid gas or the acid gas having a chemical modification; separating the concentrated-amine phase from the remaining of the absorbent; cycling the remaining of the absorbent back into the absorption unit without regeneration; providing the concentrated-amine phase to a regeneration unit, so as to obtain the acid gas and the concentrated amine; and cycling the regenerated concentrated amine back into the absorption unit.