What is a gas scrubber and how are gas scrubbers classified

What is a gas scrubber and how are gas scrubbers classified

gas scrubber, referred to as scrubber (Scruber), also known as wet dust collector, is a device that uses liquid to capture dust particles or gas pollutants in the airflow to purify the gas. It can not only remove particle pollutants, but also remove some air pollutants.
paraphrase
The gas scrubber is a device that realizes close contact between gas and liquid and separates pollutants from waste. It can be used not only for gas dust removal, but also for gas absorption and removal of gaseous pollutants. It can also be used for gas cooling, humidification and defogging operations. The gas scrubber has simple structure, low cost and high purification efficiency, and is suitable for purifying non-fibrous dust. Especially suitable for purifying high temperature, flammable and explosive gases.
Classification
The types of scrubbers are mainly divided according to the way of gas-liquid contact. There are several types of scrubbers used for gas dust removal, such as gravity spray, cyclone, self-excited spray, foam plate, packed bed, Venturi and mechanically induced spray. Dust removal mechanisms that play an important role in washing include gravity settling, centrifugal separation, inertial collision and retention, diffusion, coagulation and condensation, etc. Regardless of the type of scrubber, particulate matter is separated by means of one or several basic mechanisms. Special attention should be paid to the corrosion of pipes and equipment, the bad treatment of sewage and sludge, the reduction of flue gas lift, and the generation of condensed gas and water mist by exhaust in winter.

features

The gas scrubber has the advantages of simple structure, easy design and operation, can be used in high temperature conditions, low cost, high dust removal efficiency, and very effective in capturing tiny dust particles. Scrubbers are widely used in many industrial sectors such as steel, foundry and chemistry abroad. But the disadvantage is that it may convert air pollution into water pollution. Therefore, it is only suitable for occasions where polluted water is easy to treat or where liquid and solid are easily separated. Its application in the country is not yet widespread.