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Winter dewaxing

Dewaxing

Dewaxing of waxes is the separation process at low temperature, as the temperature decreases, the polarity of the ester bond in enhanced oil wax molecules at less than 30 ℃ (about 0 ℃) i.e. formation of crystallized, forming more stable colloidal system. In this low for some time after the wax crystals agglomerate to form larger solid grains to increase the proportion to form a suspension. Finally, wax separation.
Typical dewaxing process: the oil is slowly cooled to 5-10 ℃, holding at least 6h wax crystals. After crystallization stable, then the oil temperature rise is usually around 15 ℃, in order to reduce the viscosity for easy filtering.

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