Wet electrostatic precipitator

Wet electrostatic precipitator

The wet electrostatic precipitator WESP is usually set in the wet desulfurizalion device. After desulturization, the saturated flue gas carries a large amount of water droplets, which are captured when pessing through a high voltage electric field, which can reduce the probability of gypsum rain formation. At the same time, it has a good effect on collecting fine particles PM2.5, acid mist, etc., and the soot emission concentration can reach≤10 mg/m.

Features

  • he basic principle of the wet electrostatic precipitator is basically the same a8 that of the dry electrostatic precipitator, and it has to go through three stages of charging. ollcting and cleaning. The dry and wet flue gas environments are different. The DC high voltage electricity ionizes the space gas near the cathode line. Ater the dust particles are charged, they move under the actionof the electic field force and deposit on the surface of the dust ollecting anode. The dry electrostatic precipitator (ESP) hard vibration To remove dust, the wet electrostatic precipitator (WESP) uses a water film on the surface of the dust collecting anode or rinses to remove dust. The wet electrostatic he basic principle of the wet electrostatic precipitator is basically the same a8 that of the dry electrostatic precipitator, and it has to go through three stages of charging. ollcting and cleaning. The dry and wet flue gas environments are different. The DC high voltage electricity ionizes the space gas near the cathode line. Ater the dust particles are charged, they move under the actionof the electic field force and deposit on the surface of the dust ollecting anode. The dry electrostatic precipitator (ESP) hard vibration To remove dust, the wet electrostatic precipitator (WESP) uses a water film on the surface of the dust collecting anode or rinses to remove dust. The wet electrostatic precipitator is an electrostatic dust removal method for separaling aerosols and suspended dust paricles in gas, mainly incuding the fol lowing four complex and iteterelated physical processes:(1) lonization of gas. (2) Condensation and charging of aerosols and suspended dust particles. (3) The charged dust particles and the aerosol move toward the electrode. (4) The water film cleans the plates. Applying tens of thousands of VDC highvolage elecricity between the anode and cathode Ines of the wet electrostatic precipiator, under the action of a strong electric field, a corona layer is generated around the corona wire, and the air in the corona layer is avalanche ionized, thereby generaling A large number of negative ions and a small amount of positive ions, this process is called corona discharge; the dust (mist) particles entering the wet electrostalic precipitator negative ions and a small amount of positive ions, this process is called corona discharge; the dust (mist) particles entering the wet electrostalic precipitator with the flue gas ollide with these positive and negalive ions to charge, and the dust (og) after charging The particles move to the anode due to the high-pressure electrostalic field Coulomb force: after reaching the anode, the charge is released, and the dust (fog) particles are col lected by the anode, collecting dust to fom a water film, by gravity or flushing It flows up to the lower sump or absorption tower and is separated from the flue gas.