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Scraper Thin Film Evaporator Structure and Application Benefits
- Apr 28, 2018 -

Scraper type thin film evaporator belongs to an efficient evaporation and distillation equipment. In practical applications, it can also be used to complete deodorization, defoaming reaction and heating, cooling and other unit operations. It can be widely used in Chinese and Western pharmaceuticals, food, Light industry, petroleum, chemical industry, environmental protection and other industries. Based on its working principle, scraper type thin film evaporators mainly use high-speed rotation to distribute the liquid into a uniform thin film for evaporation or distillation.


Next, we briefly understand the performance and characteristics of the scraped film evaporator. For example, the newer type of evaporators currently in use on the market use a centrifugal sliding grooved rotor, which can form a thin film even when the flow rate is small. The sludge attached to the inner wall surface of the barrel evaporation section can be activated. The scraper is quickly removed, and the vaporization can be increased by 40-69% compared to a scraper evaporator with a fixed gap.


Combining the actual application effects to analyze, in fact, this type of scraped film evaporator has a large heat transfer coefficient and a large evaporation capacity. Under normal circumstances, its evaporation intensity can reach 200kg/m2•hr and thermal efficiency is high. Secondly, in the process of evaporation, the heating time for the material is short, about 5 seconds to 10 seconds, and it is working under vacuum conditions, which is more favorable to the heat-sensitive material, and does not cause any decomposition of various components. , to ensure product quality.


Not only that, but for different users, choosing this type of wiped film evaporator can be used to evaporate materials with different viscosities. For high and low viscosity materials can be handled. Because it changes the direction of rotation of the scraper groove, the material can be adjusted in the evaporator time.


In addition, the production and processing accuracy of this type of scraped film evaporator is also very strict, especially the inner wall of the evaporation section cylinder is precision boring and polishing treatment, the surface is not easy to produce coking and scaling. At the same time, the scraped film evaporator is easy to operate and the product index is easy to adjust. Under the confined conditions, continuous production can be controlled automatically.