Patent ID: 8728201
Filing Date: 2014-05-20
Classification: B01D,Y02A,Y02C

Abstract:
1. A method for separating carbon dioxide from a flue gas generated in a combustion plant, comprising supplying the flue gas to a membrane unit comprising at least one membrane module having a CO 2 -selective polymer membrane having a CO 2 /N 2 selectivity of 40:1, whereby a portion of the CO 2 is separated in the module from the flue gas as enriched CO 2 permeate, and a remaining portion of the flue gas that is CO 2 -depleted being retentate, supplying the retentate to at least one additional CO 2 separating unit, whereby a portion of the CO 2 in the retentate is separated from the flue gas by an absorbent.