In oil refining equipment working process of degumming process in detail:
Oil contained in phospholipid, protein, slime and sugar-based impurities such as diacylglycerol, with the oil of sol system while the glue is soluble impurities.The presence of these glue soluble impurities not only reduces the use value and storage stability of grease, and in the oil refining and processing, a series of adverse effects, lead to the decrease of the quality of the product.Such as gelatin produced in excessive emulsification of the alkali refining, oil, soap cannot very good separation, namely honeylocust with neutral oil, has led to an increased consumption of smelting, at the same time make the oil contains the increase increase the number of water washing and water washing soap grease loss;Decolorizing the active surface glue will cover part of decoloring agent, lower the decolorizing efficiency;Deodorization temperature is higher, colloid happens, carbide increase oil color;Hydrogenated will reduce the rate of hydrogenation, etc.So the oil refining process is generally come unglued.
Glue soluble impurities in oil of hair removal process is called degumming.Because hair oil glue soluble impurity mainly phospholipids, so often called degumming dephosphorization industrial production.Before alkali degumming soluble impurities, can reduce the wastage of the neutral oil, improve the quality of refined oil, can save with alkaline, and can obtain valuable byproducts, phospholipids.  
Degumming method are many, such as hydration degumming, acid degumming smelting, adsorption of degumming, thermal poly degumming and chemical degumming, etc.The oil industry is the most common application hydration degumming and acid degumming.For phospholipid content more or want phospholipids extracted oil as a byproduct, usually before acid hydration degumming.And to meet the requirements of higher degumming, may need to use acid gel, mainly with phosphoric acid, citric acid, such as weak acid, sulfuric acid and rarely used in edible oil degumming.General role in acid degumming get oil deep, and part of phospholipids, cannot serve as the raw material of producing edible phospholipids.