Our company is specialized in cooking oil refinery machine. We can provide the cooking oil refinery machine from 1 ton to 600 tons. The popular capacity is mini cooking oil refinery machine from 1-5 tons, small scale oil refinery from 5-20 tons and other oil refinery from 20-600 tons. Our equipment suitable for various edible oil refining machine. For example, rice bran oil refining machine, peanut oil refining/refinery machine, soybean oil refining machine, sunflower oil refining machine and so on.
Main processes of cooking oil refinery machine :
This is the most important section of hydrate de-gumming, the water (there is a little P-acid in water) amount, temperature and water adding speed are very important.
Using alkali like (NaOH) to neutralize FFA in oil, during this process it will produce soapstock , then separating it from the oil. NAOH solution not only neutralize free fatty acid, but also can act with other substances like protein, mucus, phospholipid, pigment. In the batch type and semi-continuous refinery , separating the nigre by sedimentation method . But in the continuous refinery , we usually using the centrifugal to separate the soapstock.
Because there is pigment in crude oil, the oil color is dark. In order to improve oil color, we need to using the active clay to absorb the pigment away , then using vibrating filter to separate the waste clay. If you want to get light color oil, you need to add more active clay. Customer can accord to his requirement to control the oil color.
D.Deodorization and Dehydration Section:
General speaking , the crude oil smells not good, it will affect of oil storge and selling prices. So we usually use the direct steam to take odors. At the meanwhile, there is about 0.5% water content in refined oil, because the high temperature in the deodorization tower or pot, dehydration section is also finished in this part.
E. Filtering section:
After getting the deodored oil , in order to get the most purified cooking oil , we usually using the SS safety filter to filter refined oil once again.
Because there is some wax in the sunflower oil , corn oil, rice bran oil , etc. , if you want to get the first grade cooking oil , dewaxing machine is required. It depends on the customer.