A new combination process of distillation with salt extraction for separating organic solvent-water azeotropes  

利用分批精馏和盐效萃取分离有机溶剂-水共沸物的新工艺(英文)

作　　者：潘晓梅[1] 肖国民[1] 杨志才[2] 

机构地区：[1]东南大学化学化工系,南京210096 [2]天津大学化学工程研究所,天津300072

出　　处：《Journal of Southeast University(English Edition)》2004年第2期226-228,共3页东南大学学报（英文版）

摘　　要：A novel process which can purify the organic solvents from their azeotropes with water is proposed. In this process,water can be drained off both from bottom and overhead of tower at the same time,and the organic solvent is concentrated in the tower and accumulated in the middle vessel at last. So the progress is time-shortened and energy-saving. The product purity is 99. 8% and the product yield is more than 99.5%. Simulation of liquid-liquid equilibrium (LLE) and the equipment operation data agree well with the experiment.建立了一种带有中间储罐的间歇精馏盐效萃取联合装置 .通过塔顶盐效萃取器和中间罐的作用 ,使原料中的水既能从塔顶除去 ,又能从塔釜除去 .缩短了操作时间 ,节约了塔釜加热量 .单批操作产品的质量浓度达 99.8%以上 ,收率达 99.5 % .对盐效萃取器中的液液平衡进行了实验研究和模型关联 ,并在此基础上对整个装置进行了数学模拟 ,模型计算结果与实验数据吻合良好 .

关 键 词：AZEOTROPE SEPARATION bath distillation salt extraction 

分 类 号：TQ026.3[化学工程]