Preheating of edible oil degumming stage

After the crude oil is preheated by the heat exchanger, weak alkali is added to make the gum impurities and some free fatty acids in the oil generate soap stock, and then the soap stock is separated. Then hot salt water is added to the oil for washing, and the soap washing water is separated. After one or two similar washings, the degumming is completed. The degummed oil enters the decolorization process, and activated white clay is added to the decolorization tower for decolorization, and then pumped into the leaf filter for filtration. The filtrate enters the next process after polishing. The leaf filter is blown dry and the waste white clay is discharged by vibration.

The dewaxing equipment mainly includes refrigeration units and plate heat exchangers.