APPARATUS FOR RECOVERING CO2 AND METHOD OF RECOVERING CO2

摘要

An apparatus for CO2 recovery which comprises: an absorption column (1003) in which a CO2-containing discharge gas (1001A) and a CO2-absorbing liquid (1002) are countercurrently contacted with each other to remove the CO2; and a regeneration column (1005) in which a rich solution (1004) containing the CO2 absorbed therein is regenerated. In the apparatus, a lean solution (1006) from which CO2 has been removed in the regeneration column (1005) is reutilized in the absorption column (1003). The absorption column (1003) has a CO2 absorption part (1010) in which the CO2 contained in the discharge gas (1001A) is recovered. The CO2-absorbing liquid (1002) which has absorbed CO2 is discharged outside from the rich side of the CO2 absorption part (1010), cooled, and then supplied to that part of the absorption column (1003) which is located on the lean side of the position where the CO2-absorbing liquid (1002) has been discharged.