Screw Oil Press

The filtered crude oil will be pumped into the Multi-efficiency mixer at a controlled rate and be heated to about 90oC by the deodorized in a crude oil Economizer/Heat Exchanger as well as by steam in the Heater. A self-cleanning duplex- restrainer is installed in the oil line to protect the pump and the measuring instruments. Phosporic acid is injected at a controlled rate and intensively contracted with the oil in the Acid Mixer thereby precipitating gums which is mainly phospholipids and other hydrophilic colloid impurity. The reaction of the acid and oil occurs in the Reaction tank.
The pump conveys the mixture after reaction to the heat exchanger to cool down before adding caustic. The acid conditioned and/or heated oil is reacted with caustic soda solution injected at a controlled rate in the reactin tank after the Caustic Mixer; the caustic neutralizes the free fatty acids and the excess mineral acid in the oil. Forming soap stock which is removed together with the excess caustic solution and the other impurities in the Separator.

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