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The collection efficiency of cyclone separators increases with: 1) Decreasing particle size 2) Increasing particle density 3) Decreasing gas velocity 4) Increasing number of gas revolutions 5) Increasing cyclone diameter Which of the above statements are correct?

The collection efficiency of cyclone separators increases with: 1) Decreasing particle size 2) Increasing particle density 3) Decreasing gas velocity 4) Increasing number of gas revolutions 5) Increasing cyclone diameter Which of the above statements are correct? Correct Answer 2 and 4 only

Explanation:

Cyclone seperator:

  • A cyclone separator is a device that separates particles from a gas stream using centrifugal force.
  • The solid particles which are denser than the gas, have a high centrifugal force, which directs them to the walls, where they collide and lose momentum and get separated easily.
  • Hence, cyclone separator efficiency increases with increase in density of particles and size of particle.
  • Also, with increase in speed of revolution, the gas flow rate increases and it creates a swirling movement inside the separator, because of which the particles get easily separated after striking the walls.

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