Patent ID: 8728220

Claim:
A CO 2 recovery system comprising: a CO 2 absorber for bringing a cooled CO 2 -containing exhaust gas into contact with a CO 2 -absorbent absorbing CO 2 so as to remove CO 2 , from the exhaust gas; a first absorbent regenerator for regenerating an absorbent by releasing CO 2 from a CO 2 -absorbent having absorbed CO 2 ; a second absorbent regenerator for regenerating an absorbent by releasing residual CO 2 from a first lean solution discharged from the first absorbent regenerator; and a flash drum for flashing a second lean solution discharged from the second absorbent regenerator, wherein vapor generated in the flash drum is inputted to the first absorbent regenerator, and wherein the CO 2 recovery system, further comprises a lean/lean solution heat exchanger for heat-exchanging the first lean solution with a third lean solution flashed in the flash drum.