Operation process: Crude oil -- degumming (water washing) -- deacidification (alkali refining) -- decolorization (clay adsorption) -- dehydration (heating and drying) -- Product Oil

Small refining equipment is used to heat and stir crude oil (peanut oil, rapeseed oil, tea seed oil, soybean oil, sunflower seed oil, flax oil, walnut oil, sesame oil and other edible oils) for hydration degumming, deacidification, decolorization and deodorization.

     1. Hydration degumming is a kind of degumming that uses the hydrophilicity of colloidal impurities such as phospholipids to add a certain amount of water or dilute electrolyte solution to the crude oil under stirring, so that the colloidal impurities in the crude oil can absorb water, expand, condense and remove. In the process of hydration degumming, phospholipids are the main substances that can be coagulated and precipitated. In addition, there are proteins, mucus and trace metal ions combined with phospholipids.

     2. Alkali refining deacidification: unrefined crude oil contains a certain amount of free fatty acids. The process of removing free fatty acids from oil is called deacidification. Deacidification includes alkali refining, distillation, solvent extraction and esterification. Alkali refining and steam distillation (i.e. physical refining) are widely used in industrial production

     3. Oil decolorization, oil adsorption decolorization, is to use some substances (such as bleaching soil, activated clay, activated carbon, etc.) with strong selective adsorption on pigments to adsorb pigments and other impurities in oils under certain conditions, so as to achieve the purpose of decolorization. The oil treated with adsorbent can not only improve the oil color and remove the gum, but also effectively remove some trace metal ions and substances that can cause poisoning of hydrogenation catalyst in the oil, so as to provide good conditions for further (hydrogenation and deodorization) of the oil.

      4. Oil deodorization refers to the process of deodorizing substances by steam distillation under high temperature and vacuum conditions by using the difference between the volatilization of odor substances in oil and triglyceride.

Treatment effect:

The oil treated by the refiner has transparent color, no precipitation after long-term storage, no foaming and oil smoke. It can be directly filled and sold. It is suitable for processing with supplied materials and small-scale oil processing plants

Operation process:

Crude oil -- degumming (water washing) -- deacidification (alkali refining) -- decolorization (clay adsorption) -- dehydration (heating and drying) -- Product Oil