The palm oil fractionation process seeks to obtain lipid crystals with high stability and good filtration properties. Since the crystallization occurs in the eutectic system of solid lipids and liquid oils, the complexity of the components as well as the operating conditions directly affect the palm oil fractionation process.

Factors affecting palm oil fractionation process:

1. Oil and its quality of different varieties of fats and oils, triglyceride components are different, coupled with the oil in the preparation, refining process of the process impact, so that the oil in the ease or difficulty of segregation there are differences.

2. The so-called crystal seeds and uneven nuclei, the so-called crystal seeds, is the first formation of nuclei in the cooling crystallization process, and can induce solid lipids in its surrounding precipitation, growth. In the palm oil fractionation process, generally add and solid fat in the fatty acid structure of the solid fatty acids, sometimes on the oil is not deacidification pretreatment, to contain free fatty acids as crystal seed, in order to facilitate the growth of lipid crystals. Uneven crystal nucleus refers to the crystals precipitated from palm oil refining process and conveying due to the temperature lower than the solidification point of solid fat.

3. Crystallization temperature and cooling rate palm oil fractionation process, due to triglyceride molecules in the three acyl carbon chain are longer, the crystallization will have a serious overcooling, oversaturation phenomenon, the crystallization of the temperature is often much lower than the solidification point of solid fat. Cooling rate depends on the temperature difference between the cooling medium and the oil and grease and heat transfer area, too large a temperature difference in the heat exchanger surface will form nuclei scale, affecting the heat transfer and slow down the palm oil fractionation process.

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