When boiler use cyclone separator and why?

for the purpose of water-steam separation. High efficiency separation is very important in order to:

- prevent water droplet carryover into the superheater, where serious thermal damage can occur.

- prevent the carryover of solids entrained in water droplets into the superheater and turbine blading, where deposits may form, which are difficult to remove. These deposits end up reducing turbine efficiency and causing superheater tube temperature increases, distortion or even burnout.