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Physical refining

Physical refining, oil physical refining distillation acid, namely system according to the triglyceride and free fatty acids have significant volatility, the characteristics of the water vapor distillation under high vacuum and high temperature, the principle of the removal of free fatty acids in oil and other volatile substances.In distillation acid at the same time, also accompanied by exsolution decolorization, deodorization, detoxification and parts comprehensive effect.

Grease physical refining process consists of two parts, namely oil pretreatment and distillation of crude acid.Pretreatment including oil removing impurity, degumming, three decolorization process.Through pretreatment, make crude oil in distillation deacidifying process conditions of pretreatment of oil, which is the precondition of physical refining, if pretreatment is not good, can make distillation acid could not be, or not qualified products.Distillation acid mainly include oil heating, cooling, distillation and fatty acid recycling process.Physical refining process is as follows:
Physical refining the use of main equipment in the machine, filter, degumming cans, decoloring pot, heat transfer oil tank, oil tank heating, distillation, acid tank, fatty acid condenser and vacuum devices, etc.