The oil content of cottonseed is about 20% to 25%. After detoxification, shelling, crushing, pressing and other processes, cottonseed oil can be extracted. Depending on the production process, cottonseed oil can be processed into pressed cottonseed oil, extracted cottonseed oil, cottonseed crude oil and other products. Cottonseed oil contains a large amount of essential nutrients that the human body must grow, and is very suitable for mixing with animal oil. However, the cotton present in cottonseed oil is One of the important factors affecting the quality of cottonseed oil.

Gossypol present in cottonseed oil is a polyphenolic substance. Gossypol is a toxic substance that can cause redness, swelling and bleeding, loss of appetite, neurological disorders, weight loss, and affect fertility. Cotton oil without special treatment cannot be eaten, otherwise it may cause poisoning. In order to ensure the safety of cottonseed oil, oil factories will use oil refining equipment to refine cottonseed oil to remove impurities and harmful substances in the oil, making it safe for consumption before selling it.

During the cottonseed oil refining process, because gossypol is weakly acidic, it can react with alkali to form gossypol sodium salt, which is soluble in water but insoluble in organic solvents. Therefore, it can be refined through alkali refining deacidification process and react with alkali solution during the deacidification process. , attached to the soap locust and discharged.

Oil refining equipment is equipment that removes phospholipids, pigments, odor substances, moisture, free fatty acids and other impurities in crude oil. It mainly includes degumming, deacidification, dehydration, decolorization, deodorization, dewaxing and other processes. It is the main equipment to improve the quality of oil. . The oil refining equipment can be divided into three types: intermittent refining equipment, semi-continuous refining equipment and fully continuous refining equipment. These three types of oil refining equipment have different degrees of automation and are suitable for oil plant processing with different outputs.