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综述了乙二醇与1,2-丁二醇分离方法的研究进展,介绍了不同分离纯化技术,主要包括共沸精馏、萃取精馏、萃取与共沸精馏联用、反应精馏、吸附分离等。分析了每种方法的优缺点,指出共沸精馏、共沸精馏与萃取联用的分离技术分离乙二醇与1,2-丁二醇可用于工业规模化生产,吸附分离可用于小规模生产,反应精馏可以作为未来乙二醇纯化技术的发展方向。
The progress of the research on the separation of ethylene glycol and 1,2-butanediol is reviewed. Different separation and purification techniques are introduced, including azeotropic distillation, extractive distillation, combined with azeotropic distillation, reactive distillation, adsorption Separation and so on. The advantages and disadvantages of each method are analyzed. It is pointed out that the separation technology of azeotropic distillation, azeotropic distillation and extraction can separate ethylene glycol and 1,2-butanediol for industrial scale production. The adsorption and separation can be used for small Scale production, reactive distillation can be used as the future development of ethylene glycol purification technology.