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The basic principle of thin film evaporators!
2021-01-17
There are many types of evaporators, Thin-film evaporator is a type of evaporator. In a thin-film evaporator, the material liquid flows as a film along the heating tube wall for heat transfer and evaporation. Thin-film evaporator It features high heat transfer coefficient, high evaporation intensity, and allows for vacuum operation, making it especially suitable for the evaporation and concentration of heat-sensitive, high-boiling point, and high-viscosity materials.
Thin-film evaporator Basic principle: The material liquid preheated to a certain temperature enters the evaporator from the Thin-film evaporator upper inlet and is divided into multiple streams by a rotating liquid distributor, flowing into the inner wall of the cylinder. Each stream of material forms a uniform liquid film on the heated inner wall. The liquid film absorbs the heat transferred from the heating medium to the evaporation surface, and rapid evaporation of the substance occurs on its surface. Through repeated evaporation, the material liquid is gradually concentrated.
According to the cause of film formation and the flow direction, it can be divided into three types: rising film evaporator, falling film evaporator, and scraping film evaporator. Thin-film evaporator The unit consists of three components: an evaporator, a gas-liquid separator, and a preheater, as well as a simple separator. The evaporator is a film-type heat exchanger. Thin-film evaporator It has the characteristics of high production capacity, high efficiency, and short material heating time, and is suitable for the concentration of dilute solutions in the pharmaceutical, food, and chemical industries. The thin-film evaporator has good corrosion resistance, stable operation, and a long service life.
Thin-film evaporator It is a new type of high-efficiency evaporator with a high heat transfer coefficient and high evaporation intensity. It is highly adaptable to heat-sensitive materials and also performs well with scaling and crystallizing materials. The finished product concentration of the thin-film evaporator has a large adjustable range.
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