Crude palm oil refining process and refining purpose introduction
Rrude palm oil refining generally refers to the process of removing impurities in crude palm oil and improving the purity of final vegetable oil. The existence of impurities in crude palm oil not only affects the edible value and safe storage of oil, but also brings difficulties to palm oil deep processing. The refining process of crude palm oil can be divided into four process steps: hydration degumming, alkali refining deacidification, adsorption decolorization and high temperature deodorization. [Related reading: Palm oil refining machine types and their characteristics ] Hydration degumming is to separate the peptizing impurities in the crude oil. Its working principle utilizes the hydrophilicity of peptized impurities to add an appropriate amount of warm water to the crude oil and stir to make it absorb water and aggregate into agglomerates. Alkali refining deacidification is to separate the free fatty acids in the crude oil, reduce the acid value of the ...