Patent ID: 8906141

Claim:
An apparatus for separating and recovering CO 2 from a CO 2 absorbent that has absorbed CO 2 , comprising: a regeneration tower for regenerating the CO 2 absorbent that has absorbed CO 2 by heating it to separate and remove CO 2 therefrom and to exhaust CO 2 gas; a compressor for compressing the CO 2 gas exhausted from the regeneration tower to yield compressed CO 2 ; a heat exchanger for heating the CO 2 absorbent in the regeneration tower by executing heat exchange with a part of the compressed CO 2 introduced into the regeneration tower; and a reboiler for heating a part of the CO 2 absorbent extracted from a bottom portion of the regeneration tower, the reboiler being different from the heat exchanger, wherein the heat exchanger is located in the regeneration tower and has a shape of a gas pipe through which the compressed CO 2 flows to exchange heat between the compressed CO 2 and the absorbent flowing in an outer periphery of the gas pipe.