Mechanical vapor recompression (MVR) evaporator & compressor from Leheng
For high viscosity liquid, it is difficult to form film by raising film or falling film. Mechanical method should be adopted to make the liquid to form film and reach better heat transfer effect. The gap between the scraper & wall of evaporator is about 0.7~1.5mm. The scraper rotates continuously with mechanical transmission, to keep the film status.
Scraper film evaporator is specialized for high viscous raw material liquid. When the fluids viscosity exceed 50~100mPa.S, heat transfer coefficient of falling film or rising film will decrease sharply; When the fluids viscosity exceed 1000~10000mPa.S, falling film or rising film cannot be adopted fully. Scraper film evaporator can give better performance. Scraper evaporator is widely used in petroleum, chemical, pharmaceutical and other industries, especially suitable for high viscosity, easy fouling and heat sensitive materials.
The scraper film evaporator is mainly composed of motor & reducer, separating bowl, distributor, vapor liquid separator, evaporation body.