Batch Refinery
In batch refining process a measured batch of crude oil is processed in sequence of Nutralizing , Bleaching, Dewaxing & Deodorizing.
Crude oil from obtained from expellers, solvent extraction plant contains foreign impurities such as mucilage, gums and unfiltered proteinous matter from the seed. It also contains gums which making it unfit for edible purpose.
Batch refining consists of following sections.
1) Nutralizing
2) Bleaching
3) Dewaxing
4) Deodorizing
Therefore the first stage of refining is to separate these gums & foreign impurities with chemicals and hot water treatment called as degumming process. Thereafter the degummed oil is further processed in bleaching section under vacuum and treated with bleaching earth and carbon for reduction of colour pigments. Next it will be deodorized under high vacuum.
The edible oil obtained from batch refinery is of good quality meeting all requirements of international standards.
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