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How does a thin-film evaporator work?
2021-01-14
Thin-film evaporator A type of evaporator, characterized by the material liquid flowing as a film along the heating tube wall for heat transfer and evaporation. Its advantages include high heat transfer efficiency, fast evaporation speed, and short material residence time, making it particularly suitable for evaporating heat-sensitive substances. According to the cause of film formation and flow direction, it can be divided into three types: rising film evaporator, falling film evaporator, and wiped film evaporator.
Thin-film evaporator The unit consists of three components: an evaporator, a vapor-liquid separator, and a preheater, as well as a simple separator. The evaporator is a rising film type of shell and tube heat exchanger. Thin-film evaporator It features high production capacity, high efficiency, and short material heating time, suitable for concentrating dilute solutions in the pharmaceutical, food, and chemical industries. Thin-film evaporator The parts in contact with the materials are made of stainless steel, exhibiting good corrosion resistance, durability, and compliance with pharmaceutical hygiene requirements.
Thin-film evaporator How does it work? The material radially enters the evaporator from above the heating zone; it is distributed to the heating wall of the evaporator via a distributor. Then, the rotating wiper continuously and uniformly scrapes the material into a film of uniform thickness on the heating surface and pushes it downward in a spiral. During this process, the rotating wiper ensures continuous and uniform film generation with high-speed turbulence, and prevents the film from coking or scaling on the heating surface, thus improving the overall heat transfer coefficient.
When using it, we must first pay attention to whether the raw materials can pass through. Thin-film evaporator Achieving the desired results, and paying attention to the operating methods to avoid unnecessary errors.
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