Spray scrubber with defoamer spray unit

摘要

An air pollution control apparatus 1 includes: an absorber 2 that serves as a passage for flue gas; an absorbent spraying unit 5 that sprays an absorbent into the absorber 2; and a reservoir tank 3 that reserves therein the absorbent. The air pollution control apparatus 1 brings the flue gas into gas-liquid contact with the absorbent to process the flue gas, while sending the flue gas in the absorber 2. The air pollution control apparatus 1 also collects and reserves therein the absorbent after processing the flue gas in the reservoir tank 3. The air pollution control apparatus 1 also includes a defoaming agent diffusing unit 6 that diffuses a defoaming agent over foams of the absorbent in the reservoir tank 3.