WET FLUE GAS DESULFURIZATION DEVICE

摘要

A wet flue gas desulfurization device is configured so that the device has high desulfurization performance, pressure loss in the absorption tower is low, and the device can be operated at low running cost. An absorption tower is provided with: a liquid reservoir section (5) provided at the lower part of the tower and storing an absorption liquid (S); an absorption section (6) provided above the liquid reservoir section (5) and having multiple tiers of spray headers (8) for spraying the absorption liquid (S); an absorption liquid circulation system (13) for circulating the absorption liquid (S), which is present in the liquid reservoir section (5), to the spray headers (8); an exhaust gas inlet section (3) provided in the portion of the sidewall which is located between the liquid reservoir section (5) and the absorption section (6); and a gas blow-out prevention member (19) provided along the entire circumference of the inner surface of the portion of the sidewall which is located between the exhaust gas inlet section (3) and the spray header (8) of the uppermost tier. Dams (23) are intermittently provided at the inner peripheral end of the gas blow-out prevention member (19) so as to extend along the circumferential direction thereof.