How does an edible oil refinery plant works？
There are three types of edible oil refinery plant: batch type edible oil refinery plant, semi continuous edible oil refinery plant and fully continuous edible oil refinery plant. They have a little differences.
1-20tpd batch type edible oil refinery plant
10-50tpd semi continuous edible oil refinery plant
50-2000tpd fully continuous edible oil refinery plant
First, the refining method used in edible oil refinery plant is different. Usually, batch type edible oil refinery plant and semi continuous edible oil refinery plant use chemical refining method of edible oil, and fully continuous edible oil refinery plant use physical refining method of edible oil.
The difference of degumming section:
In batch type and semi-continuous edible oil refinery plant, degumming tanks are used, where the crude oil reacts with alkali. At the same time, little hot water and phosphoric acid is added to move the gum.
After reaction, it need natural sinking about 4-6 hours. Then the gum and nigre are separated from the oil. Several tans are used alternately, because the sinking time is a little long.
In the continuous edible oil refinery plant, centrifugal mixer and centrifugal are used. Crude oil, lye, hot water and phosphoric acid are reacted in the centrifugal mixer. Then the centrifugal will separate the water and nigre from the oil. The whole process can finished continuously.
The difference of deodorization section:
In batch type edible oil refinery plant, the deodorization pot is used. It only can remove the smell of the oil by hot steam. In semi-continuous and continuous edible oil refinery plant, the deodorization and deacidification tower is used. It uses to the physical oil refining method to move the acid and smell at the same time.
The general working process of edible oil refinery plant:
Crude edible oil → degumming and deacidification → decolorization → deodorization → dewaxing or winterization or fractionation → refined edible oil.
What's more, different kinds of crude edible oil need different refining process.
Related reading: edible oil refining process(In this article, there is detailed introduction of edible oil refining process. )
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