PURPOSE: To improve sepn. efficiency and to permit reevaporation and reheating of moisture by passing high temp. steam into the corrugated plates which are the elements of a separating device for moisture and providing many fins.

CONSTITUTION: In a separating device for moisture which uses the principle of inertia in the stage of changing directions during passage of moisture between corrugated plates, high temp. steam is introduced into the plates 2 to heat the surfaces of the corrugated plates. Many fins 10 are provided in order to increase the heat transfer areas of the surfaces of the plates 2. Thus the separator for moisture having good separating performance for moisture and plant performance is obtained, and the reevaporation and reheating of moisture are made possible.