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High vacuum batch distillation of C18 fatty acid methyl esters
  
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KeyWord:high vacuum batch distillation  C18 fatty acid methyl esters  methyl oleate  methyl linoleate  methyl stearate
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XING Zhongpeng，WANG Xianqin，LI Lujun，etc  
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Abstract:
      With industrial methyl oleate as raw material, reflux ratio and operation pressure in the top of tower as the main factors, the effect of high vacuum batch distillation process conditions on the separation and purification of C18 fatty acid esters were studied，then Aspen was used to simulate the high vacuum batch distillation. The results showed that in the first distillation, total content of methyl oleate and methyl linoleate in the product was above 98%, in which the content of methyl oleate was 89.1%. Based on the first distillation, the second distillation was carried out and the content of methyl oleate increased to 94.7% in the top of tower. The simulation results of Aspen agreed well with the experimental results.
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