Spray tower, also known as spray tower. There is no filler plate in the tower, but there are nozzles set up in the absorption tower. The liquid enters the top of the tower, is sprayed into mist raindrops through the nozzles; the gas enters the lower part of the tower, the mist raindrops are in close contact with the liquid for mass transfer. The soluble components in the gas are absorbed. Simple structure, easy to be blocked, low resistance, easy to operate maintain.