间歇精馏分离乙醇-DEM体系的研究  

Study on the separation of ethanol-DEM system by distillation

作　　者：林军[1] 顾正桂[1] 苏复[1] 冯佳佳[1] 

机构地区：[1]南京师范大学化学与环境科学学院,江苏南京210097

出　　处：《计算机与应用化学》2008年第8期975-977,共3页Computers and Applied Chemistry

基　　金：江苏省普通高校自然科学研究计划资助项目07KJD530114.

摘　　要：为除去DEM粗产品中的少量乙醇,获得高纯度DEM产品,测定乙醇-DEM体系的汽液平衡数据,采用间歇精馏法将体系分离精制。确定了精馏工艺条件,考查了原料组成、填料高度等因素对分离的影响,采用理论板数n≥28的填料蒸馏塔,当原料中乙醇含量等于2%时,产品DEM纯度可高于99.6%,回收率超过88%。为以后的工业装置设计及工业化生产提供了充足的实验依据。Based on the determined vapor-liquid equilibrium of the ethanol-DEM system, the distillation process was adopted to separate ethanol from DEM. The experimental works was done to investigate the effects of the ratio of raw materials and height of packed tower, the one-way recovery rate of the final DEM product with the purity higher than 99. 6% and recovery rate exceeded 88% , which provided more reliable experimental data for the design and operation of industrial equipments.

关 键 词：DEM 间歇精馏 汽液平衡 

分 类 号：TQ028.1[化学工程]