Patent ID: 8703082

Claim:
A method for capturing CO 2 from exhaust gas in an absorber, wherein the CO 2 containing gas is passed through an aqueous absorbent slurry, wherein the aqueous absorbent slurry comprises an inorganic alkali carbonate, bicarbonate and at least one of an absorption promoter and a catalyst, and wherein the CO 2 is converted to solids by precipitation in the absorber, and where the slurry having the precipitated solids is conveyed to a separating device, in which the solids are separated off in the form of a filter cake, which is washed, and, by which, essentially all of the at least one of the absorption promoter and the catalyst is recycled together with a remaining aqueous phase to the absorber, and the filter cake, containing a minimum of the promoter, is dewatered, heated and conveyed to a desorber for the release of CO 2 , and is subsequently returned to the absorber.