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Wednesday, December 30, 2015

Emission Control Devices for Industries

Pollution control plants should be installed compulsorily in all the industries. Some emission control devices popularly used in industries and elsewhere for the control of particulates are: Fabric Filters, Wet Scrubbers, Cyclone Collectors, and Electrostatic Precipitators.

 causing heavy air pollution
An Industry

A. Fabric Filter: A unique mechanical device for filtering out particulate matter, in which fabric bags are used, is called as fabric filter.
B. Wet Scrubber: A specific device meant for scrubbing out the particulate matter present in a gas by passing the gas through wet chambers is called as wet scrubber.
C. Electrostatic Precipitator: An electric operated device for isolating fine particulate matter found in a gas by ionizing the particulates when passed through a strong electric field is called as Electrostatic Precipitator.
D. Cyclone Collector: A gas cleaning device which isolates dust particles by letting them pass along with the gas in a cyclonic manner. It works on the principle that when a gas travels in a double vertex, the particles contained in it are separated. The centrifugal force developed due to the spiral movement of the gas, expels the solid particles away from it.