共沸精馏法回收丙二醇甲醚的研究与探索  

Research and exploration on recovering the propylene glycol methyl ether by azeotropic distillation

作　　者：郗伟[1] 李涛[1] 

机构地区：[1]陕西国防工业职业技术学院化学工程学院,陕西西安710302

出　　处：《精细与专用化学品》2016年第3期41-44,共4页Fine and Specialty Chemicals

基　　金：陕西省教育厅科研计划项目资助(项目编号:15JK1062)

摘　　要：丙二醇甲醚在涂料制备、纸张表面处理、造纸助剂等化工生产过程中,作为溶剂被广泛使用。回收并循环使用丙二醇甲醚溶剂的意义,不仅在于经济效益非常可观,而且有利于环境保护。通过大量的实验研究,发现采用乙醇溶液在适宜的工艺条件下使用共沸精馏技术,在115~120℃能较好地从废弃液中连续、稳定、高回收率地分离出丙二醇甲醚,成本相对较低,便于操作与应用。Propylene glycol methyl ether is widely used in coating preparation,surface treatment of paper,paper additives in chemical production process.The significance of recovery and recycling of propylene glycol methyl ether solvent is not only the very considerable economic benefit,but also favourable to environmental protection.Through a large number of experimental studies,it was found that the using of ethanol solution can well separate propylene glycol methyl ether from the waste liquid under suitable conditions by using azeotropic distillation technology in 115~120℃with continuous,stable and high recovery rate,and relatively low-cost,convenient operation and apllication.

关 键 词：回收 丙二醇甲醚 研究 

分 类 号：TQ223.24[化学工程—有机化工]