Wet dust remover can effectively remove liquid or solid particles with a diameter of 0.1 - 20 microns from the air flow, and can also remove some gaseous pollutants. The utility model has the advantages of simple structure, small floor area, convenient operation and maintenance, high purification efficiency, etc., and can handle the airflow of high temperature and high humidity, so that the possibility of fire and explosion can be minimized. But when the wet dust collector is used, special attention should be paid to the corrosion of the equipment and pipes, and the treatment of sewage and sludge. The process of wet dust removal is also not conducive to the recovery of by-products. If the equipment is installed indoors, it is necessary to consider the problem that the equipment may be frozen in the winter. Furthermore, if the removal efficiency of fine particles is higher, dispersion is required to liquid better, but the energy consumption.