Dry fractionation is used to separate RBD palm oil into olein and stearin. The typical process consists of a crystallisation section and a filtration section. During crystallisation, RBD palm oil is heated and then cooled under a controlled cooling program. The fractionation system uses a vertical cylindrical vessel full of water which is temperature regulated and mechanically agitated at a low speed. When the palm oil enters the vessel, crystal formation and growth occurs as the oil is agitated and cooled by the chilled water. The cooling rate is regulated by controlling the water temperature. The oil becomes a slurry of crystals and remaining liquid oil. The slurry is then fed into a plate and frame type filter press to separate the RBD palm stearin from the RBD palm olein. The solid crystals of the palm stearin are retained on the filter plates.

Dry fractionation has the advantages of simple process, high degree of automatic control, low steam consumption, good product quality, no need for centrifugal separator, no other solvents, and no waste water.

Henan Huatai Cereals and Oils Machinery Co.,Ltd supply palm oil processing, crude palm oil refinery, palm oil fractionation, palm oil dry fractionation technology, any need please email to info01@cnoilmachine.com