Degumming process

Degumming process: (1) hydration unglued its process is divided into intermittent and continuous two kinds. 
Filtered crude oil, preheated, add water of technology, standing precipitation (insulation), separation,hydration oil, water dehydration, unglued. 
(2) adding an acid degumming: adding an acid degumming is to add a certain amount of an inorganic or organic acid in the crude oil, the oil of the non-hydrophilic conversion of a phospholipid or a phospholipidhydrophilic colloid in the structure of the oil becomes close unglued easily achieve a precipitation method and separation purposes. 
After adding phosphoric acid is phosphoric acid degummed oil can in gross non-hydrophilic phospholipid into a hydrophilic phospholipid, making it easy to sedimentation separation. The procedure is to add the amount of oil from 0.1% to 1% of 85% phosphoric acid under sufficient stirring at a temperature 60 ~ 80 ℃. Contact time depending on equipment conditions and production methods may be. The mixture was then fed into a centrifuge for the removal of the gum separated.

Degumming process is the use of concentrated sulfuric acid and concentrated sulfuric acid action, the proteinof the composite resin and mucus precipitated. Specific procedure in the following oil temperature 30 ℃, add oil of 0.5% to 1.5% concentrated sulfuric acid, the strong stirring, until the oil color fades (concentrated sulfuric acid can damage the part of the pigment), glial started to gather , the addition of 1% to 4% of the water was diluted, still 2 ~ 3h, the grease can be isolated, separated and then washed with water to give oil 2 or 3 times. 
Dilute sulfuric acid degumming adding oil mass fraction of 2% to 5%. 
(3) Other unglued include the use of added citric acid, acetic anhydride and other phospholipids or condensedphosphoric acid condensation method unglued combined clay adsorption.