Palm oil fractionation process mainly include crystallization and fliter.Palm oil fractionation plant goes through the control of palm oil cooling and crystallization to make separation of palm oil into low melting point liquid (soft fat) and high melting solid (sterin).
The crystallization process follows in the palm oil fractionation process. This process involves the removal of high-melting glycerides that would cause the liquid oils to become viscous and cloudy at room temperatures.
There are three most important factors in palm oil fractionation process : time, agitation and temperature. Low temperatures will cause the components to separate due to supersaturation while formation of smaller crystals will be facilitated by agitation. With gradual decreases in temperatures, longer crystals will be formed with time.
Henan Doing Company Palm Oil Fractionation process system is designed to process crude, pre-treated or RBD palm oil. The process is divided in few steps as below.
Feed oil heating
Crystal formation under controlled cooling
Palm oil fractionation process
Palm Oil Fractionation Process Description
Dry Fractionation is a process to separate vegetable oils such as palm oil into two fractions, Olein and Stearin, by the crystallization properties of the oils. A typical dry fractionation plant consists of Crystallization Section and Filtration Section.
Preheated RBD palm oil is fed into the Henan Doing Company crystallizers and then cooled in a controlled environment to form crystals. The cooling sequence follows a defined program using PLC or programmable controllers. The slurry of crystals and oil is then pumped to the fractionation filter for separation of the solid crystals from the oil.
In the filtration section, an automated membrane filter press is usually used for filtration of oil slurry to separate the stearin crystals from the liquid olein. Stearin is retained as filter cake while olein passes through the filter as filtrate. Olein yield is maximized by squeezing the stearin cake through inflation of the membrane with air or liquid.
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