Composition of acid mist waste gas

The common gases that can form acid mist are as follows:

(1) hydrogen halide (HX) is a colorless and pungent gas, which is easily soluble in water. The aqueous solution is acid (hydrohalic acid), which is volatile and easy to form acid mist.

(2) sulfur dioxide combined with water vapor is easy to form acid mist.

(3) SO3 is easy to be absorbed by water. If it is high temperature, it is easy to form acid mist with water vapor.
 

Process Brief

(1) system composition of process flow: it is composed of exhaust gas collection system, induced draft system, exhaust gas purification system and exhaust system.

(2) the waste gas successively enters into the first and second level acid mist waste gas purification towers. The alkaline detergent in the absorption tower is pumped to the tower by the circulating pump and flows down through the packing. The acid mist waste gas rises against the flow. A series of physical and chemical reactions occur on the wetted surface of the packing, and the mass transfer process occurs due to the concentration difference, thus the gas purification process is completed. After the purified waste gas is dehydrated, it is led out by the centrifugal fan and discharged up to the standard. The circulating liquid is regularly discharged to the sewage treatment station.