Demister (Vapor)

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A demister, sized correctly, is exactly that. It takes the liquid mist entrained in an air stream and separates the liquid from the air. Mesh type coalescers are used to aggregate the mist into droplets that are heavy enough to separate from the air stream.


In the process of brine desalination on marine vessels, brine is flash heated into vapor.

In flashing, vapor carries over droplets of brine which have to be separated before condensing. Otherwise the distillate vapor would be contaminated. This is the role of the demister. Demisted vapor condenses on tubes in the desalination plant, and product water is collected in the distillate tray.

[edit] See also

  • CWMS
  • Separator
  • Vane type separator
  • Vessel Internals


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