CO2 RECOVERY DEVICE AND CO2 RECOVERY METHOD

摘要

Provided are a CO2 recovery device and a CO2 recovery method with which it is possible to reduce the thermal degradation of a CO2 absorption liquid at the time of regeneration. This CO2 recovery device (1) comprises: a CO2 absorption tower (14) in which CO2 included in an exhaust gas (11A) is absorbed by a CO2 absorption liquid (13); and a CO2 absorption liquid regeneration tower (15) that heats and regenerates the CO2 absorption liquid (13) that has absorbed CO2. The CO2 absorption liquid regeneration tower (15) includes: a main body part (151) in which the CO2 absorption liquid (13) is temporarily stored; a boot part (153) that is provided downward from a mirror surface part (152) of the main body part (151), and that has a relatively smaller capacity than the main body part (151); a liquid level meter (101) that is provided to the boot part (153), and that measures the liquid surface level of the CO2 absorption liquid (13) that changes between the main body part (151) and the boot part (153); and a control device (102) that controls the liquid surface level of the CO2 absorption liquid (13) between the main body part (151) and the boot part (153) on the basis of the measurement result of the liquid level meter (101).