Oil Refining Process

Cooking oil refining process photo

Oil mill machinery oil refining process

Cooking oil refining process

Cooking Oil refinery process is to refine the crude vegetable oil, get rid of the deleterious impurity, then get the high quality edible oil.According to the different capacitty,the cooking oil refinery plant can be devided thress types:batch type refinery plant,semi-continuous type refinery plant,and fully-continuous type refinery plant.

Raw materials of cooking oil refinery plant
Different raw material,the refinery process is little different.such as for peanut,soybean,cotton seed,sesame,castor,rapeseed etc,the refinery process has four steps:degumming,deacidification,decolorization and deodorization.
For corn germ,rice bran,sunflower seed,palm oil,the refinery process has five steps:degumming,deacidification,decolorization,deodorization and dewaxing(also called fractionation for palm oil).


Cooking oil refining workshop related parameters:

Steam consumption 700KG/T oil
Electric consumption 28Kwh/T oil
Water (soften water) 150Kg/T oil
Phosphoric acid 2~3 kg/T oil
Alkali acid valuex1-3kg/T oil
Circulating water cooling water yield 150M3/
Bleaching earth consumption 3-5Kg/T oil
Waste bleaching earth oil content ≤25~35%
Refining losses acid valuex1.2 (chemical refining)
acid valuex 0.6 (physics refining)
Bleaching losses the quantity of bleaching earth×0.25%
Deodorization loss consumption ≤0.5%≤0.5%
Refining rate 1-refining consumption

Capacity of cooking oil refinery plant
There are three types of refinery plant,decide by different capacity:

oil refinery plant
Cooking oil refining plant

1.batch type refinery plant:normally the capacity for this type is less than 20TPD.the refinery process of this type is refined one batch by one batch
batch oil refinery machine
Batch cooking oil refinery plant

2.Semi-continuous type refinery plant:normally the capacity for this type is 20-50TPD.the refinery process of this type is parts batch by batch,and parts continuous
semi-continuous oil refinery plant
Semi-continuous cooking oil refinery plant
3.Fully-continuous type refinery plant:normally the capacity for this type is above 30TPD.the refinery process of this type is fully continous,no need stop in the refinery process.
continuour oil refinery plant
fully-continuous cooking oil refinery plant
Process of cooking oil refinery plant:
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

2. Decoloration
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

3. Deodorization
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.

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