分子蒸馏精制L-乳酸的研究

The Study on Refining L-Lactic Acid by Molecular Distillation

研究了用分子蒸馏方法对L 乳酸进行精制的工艺。粗乳酸不需要进行其他脱水及脱色方法处理 ,只需通过 2次分子蒸馏 ,即可得到高纯度的L 乳酸。考察了操作过程中蒸馏温度、进料速率、刮膜器转速等对L 乳酸收率及纯度的影响。

The technology of refining L lactic acid by molecular distillation has been studied in this paper Pure lactic acid was produced by two steps of molecular distillation without using other methods for decoloration and dehydration The effects of the operation parameters,such as the evaporator temperature,the feed rate and agitation speed also have been studied