摘要
综述了聚乙烯醇和精对苯二甲酸生产过程中分离回收醋酸甲酯的主要方法,并对加盐萃取精馏等盐效分离方法、催化精馏方法和萃取精馏方法进行比较研究。结果表明,加盐萃取精馏方法能分离出高纯度醋酸甲酯,且生产工艺简单,有较好的应用前景。
As main purification and recycling methods for methyl acetate from production of pure terephthalic acid and the polyvinyl alcohol,catalytic distillation,extractive distillation,and some separation adding salt such as alt extractive distillation were reviewed and compared in this paper.Furthermore,it could be concluded that the liquid-liquid extraction process could refine high purity methyl acetate and had better prospect due to its simplicity and low energy consumption.
出处
《河北化工》
2011年第12期35-37,共3页
Hebei Chemical Industry
关键词
醋酸甲酯
加盐萃取精馏
催化精馏
萃取精馏
methyl acetate
salt extractive distillation
catalytic distillation
extractive distillation
