Electrostatic Precipitator


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electrostatic precipitator

[i′lek·trə‚stad·ik prə′sip·ə‚tād· ər]
(engineering)
A device which removes dust or other finely divided particles from a gas by charging the particles inductively with an electric field, then attracting them to highly charged collector plates. Also known as precipitator.

Electrostatic Precipitator

 

a device used to remove liquid droplets or solid particles from an industrial gas by means of the ionization of the droplets or particles as the gas passes through a corona-discharge area and the subsequent precipitation of the droplets or particles on electrodes. In most cases, an electrostatic precipitator consists of a precipitator and a voltage source. The precipitator is a collecting chamber that contains corona-forming electrodes and collecting electrodes. The ionization area and the precipitation area may be either integrated or separated.

Electrostatic precipitators use only high-voltage (40-70 kilo-volts) direct current; the corona-forming electrodes are always connected to the negative terminal of the power supply. According to the state of the gas, electrostatic precipitators may be classified as wet or dry precipitators. In wet precipitators, the gas is saturated with moisture up to its dew point. According to the method of droplet or particle removal, a distinction is made between periodic and continuous precipitators. Electrostatic precipitators may operate at atmospheric pressure or at pressures above or below atmospheric pressure. The gas temperature may be as high as 500°C or even higher; the degree of gas cleaning may be as high as 99.9 percent.

Electrostatic precipitators are widely used to clean the flue gases of fossil-fuel-fired steam power plants. They are also used in, for example, ferrous and nonferrous metallurgy.

electrostatic precipitator

A device installed in flues, and the like, to prevent smoke and dust particles from escaping to the atmosphere; the particles are given an electric charge as they pass through a charged screen; then they are attracted to one of two electrically charged plates through which they pass; from time to time they are removed from the plates.
References in periodicals archive ?
The system comprising of the electrostatic precipitators, the ducts from the airpreheater outlet to the ESP inlet and the duct from the ESP outlet to the ID fan inlet, the transition duct from the outlet of ID fan to the inlet of the chimney and duct representation of ESP1&ESP2 were modeled to a scale of 1:10.
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EEC will supply an electrostatic precipitator and auxiliary equipment to American Soda's Yankee Gulch soda ash facility located near Piceance Creek Basin in northwest Colorado.
Like many common consumer electronics (televisions; hair dryers; copy machines), the Ionic Breeze and other electrostatic precipitator air cleaners produce trace levels of ozone as a by-product.
EEC received the first contract from Kimberly-Clark Corporation to upgrade a recovery boiler electrostatic precipitator at their Pictou, Nova Scotia, pulp mill.
The first contract, received from Cleco Corporation headquartered in Pineville, Louisiana, consisted of the refurbishment of the internal hardware for two units of an existing electrostatic precipitator, which collect particulate emissions produced during the power generation process, at their Dolet Hills Power Station in Mansfield, Louisiana.
EEC was awarded the first contract from Pacifica Papers, a major paper manufacturer headquartered in Vancouver, Canada, to install a new recovery boiler electrostatic precipitator at their Powell River facility in British Columbia.

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