乙酸脱水膜研究进展

Acetic acid dehydration membranes

乙酸是基本的有机化工原料及重要的有机中间体,无论是在制备乙酸还是乙酸作为原料生产化工产品时,都伴随着水的生成,因此乙酸脱水是与乙酸相关的化工工业生产中十分重要的环节.相对于传统的高能耗精馏技术,渗透汽化膜分离技术具有操作条件简单、能源消耗少、分离效率高等优点.总结了近些年来用于乙酸脱水的渗透汽化膜的研究进展,从膜材料、膜制备、膜分离性能方面对现有乙酸脱水膜进行了总结分析.最后,对乙酸脱水膜的发展前景作出了展望.

Acetic acid is a basic organic chemical raw material and an essential organic intermediate.Water is produced either in the preparation of acetic acid or in the production of chemical products from acetic acid related to acetic acid.Therefore,acetic acid dehydration is an essential process in chemical industry production.Compared with traditional high-energy-consumption distillation technology,pervaporation membrane separation technology shows the advantages of simple operating conditions,low energy consumption and high separation efficiency.In this study,the researches progress of pervaporation membranes for acetic acid dehydration is reviewed.Moreover,membrane materials,membrane preparation and membrane separation performance are summarized and compared.Finally,perspectives of acetic acid dehydration membrane are prospected.