Method of Refining Crude Oil_Oil pressing,extraction,refining machine,palm oil machine,edible oil machine
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Method of Refining Crude Oil

2021-05-20

There are three methods for refining crude oil:

1. Mechanical method: including sedimentation, filtration, centrifugal separation, mainly used to separate some peptic impurities suspended in the oil from mechanical impurities;

2. Chemical method: mainly includes acid refining and alkali refining, in addition to fatification, oxidation, etc. Acid refining is treated with acid to remove pigments and peptic impurities, and alkali refining is treated with alkali to remove free fatty acids. Oxidation is mainly used for decolorization.

3. Physical and chemical methods: mainly include hydration, decolorization, steam distillation, etc. Hydration mainly removes phospholipids, decolorization mainly removes pigments, and steam distillation is used to remove odorous substances and free fatty acids. After refining crude oil, the moisture, impurities, acid value, and peroxide value in the oil meet the national quality standards, and it is not easy to rancidity and deterioration, and is advantageous for storage. It does not produce a large amount of oily smoke during cooking and maintains the oil flavor.

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