After oil press machine or oil extraction machine, all the crude oil will be delivered here for cooking oil refinery. Cooking oil refinery plant can be widely used for soybean oil refining, mustard oil refining, rapeseed oil refining ,cottonseed oil refining, palm oil refining , and sunflower oil refining etc .
For different capacity by different way of deacidifcation, cooking oil refining process can be divided into chemical oil refining and physical oil refining. Normally small scale cooking oil refinery with capacity less than 20 tons per day adopts chemical refining, thinking about cost performance. and cooking oil refining equipment is normally with low automation (called batch oil refining)
Cooking oil refining process :
1. Degumming and deacidification
Degumming is using phosphoric acid ,water to react crude oil and then separate phosphatide from oil. But in order to reduce more phosphatide, after enough phosphoric acid treatment, adding alkali inside oil to neutralize free fatty acid , and washing before gum separation , this process is called deacidification. Here the byproduct is soap stock which can be used for making soap.
Main cooking oil refining equipment : alkali bin, oil refining kettles
Decoloration is using clay to bleach oil , in this step, clay will absorb dark colorant of oil .The quantity of clay is depending on the deepness of crude oil. After bleaching , used clay will be screened out by vibrating screen.
Main cooking oil refining equipment : decoloring kettle, vibrating screen, pumps
This step is to remove some unnecessary odors from crude oil. Normally for chemical oil refining ,it adopts plate deodorizing tower using high temperature steam to remove odors.
Main cooking oil refining equipment : deodorizing kettle, pumps
After above steps , the final product is refined cooking oil ,but some cooking oil need more treatment such as dewaxing for sunflower oil, fractionation for palm oil etc.
We are professional cooking oil refinery plant manufacturer and supplier, if you have interest in oil refining equipment, please don’t hesitate to contact us . Just telling us what type of oil and capacity , we will quote you best price with advanced oil refining technology and high quality equipment.