CO2 RECOVERY DEVICE AND OPERATION CONTROL METHOD OF CO2 RECOVERY DEVICE

摘要

A CO 2 recovering apparatus 10A according to this embodiment includes a cooling tower 11; a CO 2 absorber 12, a regenerator 13; an absorbing solution level meter 72 that measures the amount of liquid at a tower bottom of the CO 2 absorber 12; and a level controller 77 that performs automatic control or manual control for one or both of a supply amount of makeup water 76 and a condensation amount of water contained in an exhaust gas 15B based on the liquid amount of at the bottom of the CO 2 absorber 12 detected by the absorbing solution level meter 72. While the gas supply amount of the exhaust gas 15B is not changed, the level controller 77 is switched to the automatic control, and while the gas supply amount of the exhaust gas 15B is changed, the level controller 77 is switched to the manual control, thereby maintaining the supply amount of the makeup water 76 at a constant level.