Discussion
Which air pollution control equipment works on the principle of centrifugal separation ?
Answer: B
The cyclone works by centrifugal separation.
In a cyclone separator, dusty gas enters tangentially and spirals down the cylinder. The heavier particles are thrown outward by the centrifugal force onto the wall, slide down into a hopper, and the cleaned gas leaves upward through the central outlet. It suits coarse particles above about 10 µm.
An electrostatic precipitator charges particles and collects them on plates by electric force. A wet scrubber captures them in liquid droplets, and a bag filter traps them by filtration through fabric.
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