Product introduction
Wet electrostatic precipitator can also be divided into plate type and honeycomb type according to the electric field of waste gas flow. Honeycomb bundle wet electrostatic precipitator is a kind of dust collecting anode wall is composed of a plurality of regular hexagonal tube type, its shape looks like bee nest, as the name implies, it is called honeycomb bundle wet electrostatic precipitator.
Working Principle
The basic principle of wet electrostatic precipitator is basically the same as that of dry electrostatic precipitator. Both of them have to go through three stages: charge, collection and ash removal. The dry and wet flue gas environments are different. The DC high-voltage electricity ionizes the gas in the space near the cathode line, and the dust particles move and deposit on the surface of the dust collecting anode after being charged by the electric field force. The dry electrostatic precipitator (ESP) removes the dust by hard vibration, and the wet electrostatic precipitator (WESP) removes the dust by water film or washing on the surface of the dust collecting anode. Wet-type electrostatic precipitator is used to separate aerosol and suspended dust particles in gas by means of electric dust removal. It mainly includes the following four complex and interrelated physical processes:
(1) Ionization of gas.
(2) condensation and charge of aerosol and suspended floating dust particles.
(3) Charged dust particles and aerosols move to the electrode.
(4) the water film makes the plate clean.
Tens of thousands of volts of DC high voltage is applied between the anode and cathode line of wet dust removal device. Under the action of strong electric field, the corona layer is generated around the corona line, and the air in the corona layer occurs avalanche ionization, thus producing a large number of negative ions and a small number of positive ions. This process is called corona discharge. The dust (fog) particles in the wet electric dust removal device collide with these positive and negative ions and are charged. The charged dust (fog) particles move toward the anode due to the action of Coulomb force in the high voltage electrostatic field. After reaching the anode, the charge is released, the dust (fog) particles are collected by the anode, the dust is collected to form a water film, by gravity or washing from the upper to the lower liquid tank or absorption tower, and the flue gas separation.
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