CO2 RECOVERY APPARATUS AND CO2 RECOVERY METHOD

摘要

A CO2 recovery apparatus provided with a CO2 absorption tower for making a purified exhaust gas and an absorbing liquid regeneration tower for regenerating a CO2 absorbing liquid by separating CO2 from the CO2 absorbing liquid, in which a lean solution removed of CO2 in the absorbing liquid regeneration tower is reused in the CO2 absorption tower, a cooling tower for cooling the CO2-containing exhaust gas containing CO2 is provided on the upstream flow side of the CO2 absorption tower so as to set a temperature (T2) of the purified exhaust gas exhausted from the CO2 absorption tower lower than a temperature (T1) of the CO2-containing exhaust gas containing CO2 cooled in the cooling tower (T1>T2), and a condensed water made by condensing water vapor discharged from the absorbing liquid regeneration tower is evaporated in an evaporation portion.

主权项

1. A CO2 recovery apparatus comprising:
a CO2 absorption tower for bringing a CO2-containing exhaust gas containing CO2 and a CO2 absorbing liquid into contact with each other so as to remove CO2 and make a purified exhaust gas; and an absorbing liquid regeneration tower for separating CO2 from the CO2 absorbing liquid which has absorbed CO2 so as to regenerate the CO2 absorbing liquid, wherein a lean solution from which CO2 has been removed in the absorbing liquid regeneration tower is reused in the CO2 absorption tower, wherein a cooling tower for cooling the CO2-containing exhaust gas containing CO2 is provided on a side of an upstream flow of the CO2 absorption tower and a temperature (T2) of the purified exhaust gas exhausted from the CO2 absorption tower is set to be lower than a temperature (T1) of the CO2-containing exhaust gas containing CO2 cooled in the cooling tower (T1>T2), and wherein an evaporation portion is configured to evaporate a condensed water made by condensing water vapor discharged from the absorbing liquid regeneration tower to outside.