| 摘要 |
A CO 2 recovery apparatus including: a flue gas cooling apparatus (14) for allowing cooling water (13) to cool a CO 2 and O 2 containing flue gas (12); a CO 2 absorber (16) having a CO 2 recovery section (16A) for bringing the cooled CO 2 containing flue gas (12) and a CO 2 absorbent (15) into contact with each other to remove CO 2 from the flue gas (12); and an absorbent regenerator (18) for releasing CO 2 from a CO 2 absorbent (17) to regenerate the CO 2 absorbent. The apparatus further includes: a cleansing water divert line (51) for diverting partial cleansing water (19a) of circulating cleansing water (19) that has been condensed in a cleansing section (16B) in the CO 2 absorber (16); a first heat exchanger (52) disposed in the divert line (51) and in a boiler flue gas duct (11a); and a superheated cleansing solution supply line (53) for directing, into the bottom portion of the absorbent regenerator (18), a superheated cleansing solution (19b) having heat exchanged with a first heat exchanger (52). |
