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Bleaching in palm oil refining process

Bleaching is one of the key processes of edible palm oil refinery. Palm oil bleaching is generally designed before deodorization in palm oil refinery. Clay which absorbs pigmentation is added to the oil then heated. Then, the oil-clay mixture is filtered and spent cake is dried to remove the oil. Color, residual phosphatides, soaps and metals will be removed in this process. The following some onsite photos of palm oil refinery workshop.
Bleaching Process of Palm Oil Refinery
To avoid the influence by air and consume less clay, earth bleaching is processed under vacuum;
The dosage of clay is based on the color requirement of final palm oil;
Bleached oil is flushed through closed stainless steel filtration discs for less residue in the meal.
To ensure stable production and easy operation, the filter is controlled automatically.

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