Vegetable oil crops are generally not edible directly. The cooking oil production line needs to be refined before it can reach the edible oil standard.
The cooking process of cooking oil production line includes degumming, deacidifying, decoloring, deodorizing, dewaxing, etc. Vegetable oil seeds generally contain gum. During the refining process, the gum must be removed. We use hydration degumming, or add a small amount of acid Method to remove gelatin.
The decolorization of cooking oil production line generally adopts adsorption and decolorization methods. The adsorbent generally requires white clay or activated carbon. The deacidification includes chemical alkali refining and physical deacidification. Chemical alkali refining and deacidification uses a certain amount of caustic soda in the oil. Neutralizing free fatty acids is a method of extracting free fatty acids by physical evaporation using negative pressure during physical refining when the acid value of fats and oils reaches the edible standard.
The selection of cooking oil production line is to select the model of cooking oil machine according to the production volume of the customer. Generally less than 20 tons / day, we recommend choosing cooking oil machine with chemical refining method. For output of more than 20 tons / day, we recommend choosing a cooking oil refining production line that is semi-continuous or linked to physical refining. Oil containing waxy fat, also choose dewaxing equipment.