Electrostatic precipitator (ESP) is dust removal equipment to purify exhaust gas containing dust, tar, sulfuric acid mist, oily particulate, etc. It is widely used in power plant, cement plant, iron & steel works, building material, chemical industry, etc.
Electrostatic precipitator could be classified into dry ESP or wet ESP. Wet ESP has plate configuration or tubular configuration.
Air molecules are ionized in the eletric field between discharge and collecting electrodes. When exhaust gas enters ESP, fine particles are electrically charged and move towards oppositely charged electrodes. Particulates collected on electrodes will be cleaned regularly by mechanical rapping system or water flushing.
A complete ESP system includes steel casing, rapping or flushing system, power source, electrodes, air distribution device, ash hopper, manhole, etc.
As policy for environment protection is getting more and more stringent, electrostatic precipitator is widely used for industrial pollution control. It could effectively minimize contamination to surroundings after flue gas/tail gas leaves from stack.
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