Palm oil bleaching 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.
Absorptive bleaching process is mainly affected by temperature and humidity. However, the quality of refinery machines, the structure and type of bleaching earth also matter.
palm oil bleaching process of palm oil refinery
The purpose of bleaching is to remove color producing substances in the crude oil. The absorbent materials is known as bleaching earth or clay.
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