Acid alkali waste gas treatment unit
At present, most corrosive gases (such as acid and alkaline waste gas) are treated by liquid absorption method. The acid mist waste gas is introduced into the purification tower through the air duct. After passing through the packing layer, the waste gas and the sodium hydroxide absorption solution are fully contacted by the gas-liquid two-phase absorption and neutralization reaction. After purification, the acid mist waste gas is dewatered and demisted by the demister and then discharged into the atmosphere by the fan. The absorption liquid is sprayed down from the tower top after being pressurized by water pump at the tower bottom, and then returns to the tower bottom for recycling.