Type of evaporator and its choice

The evaporator is a special heat transfer device. It differs from a general heat exchanger in that it is necessary to continuously remove the secondary steam generated by evaporation. Therefore, the evaporator is structurally provided with a heating chamber for heat exchange, and a vapor-liquid separation evaporation chamber. In addition, in order to effectively separate the steam and the liquid foam, a demister is also provided.

In chemical production, most of the evaporators use saturated steam as the heating medium, so the heat exchange side of the evaporator is saturated with water vapor condensation and the other side is solution boiling, so the key to heat transfer is liquid boiling. One side. In order to adapt to the evaporation and concentration of various materials, various types of evaporators have appeared, and with the development of production technology, its structure is continuously improved. The partition wall heat exchange evaporator commonly used in industry can be divided into circulation type according to the flow characteristics of the solution in the evaporator (central circulation tube type, hanging basket type, external heating type, column type, forced circulation type, etc.) And non-circulating type (rise film, falling film, lifting film, scraper, etc.) two types.https://www.heczb.com/