化学工程2012，Vol.40Issue(12)：19-23,5.DOI:10.3969/j.issn.1005-9954.2012.12.005
萃取精馏分离丙酮-四氢呋喃的研究
Separation of acetone-tetrahydrofuran by extractive distillation
摘要
Abstract
In order to separate acetone-tetrahydrofuran mixture, ethylbenzene as the solvent for separating acetone-tetrahydrofuran mixture by extractive distillation was chosen according to the basic selection rules. The simulation of vapor-liquid equilibrium using NRTL model for acetone-tetrahydrofuran system with and without ethylbenzene under atmospheric pressure and the vapor-liquid equilibrium experiment were performed. The simulation results agree well with the experimental data. The effectiveness of the solvent selected was also investigated by the batch extractive distillation experiments. The results show that ethylbenzene can eliminate the azeotropic point of acetone-tetrahydrofuran system. The batch distillation was carried out in a packed column of 40 theoretical plates. With the reflux ratio of 5 and the solvent mole ratio of 2. 5 : 1 ,the product mass fraction of acetone reaches 99. 34% , which reveals that the extractive distillation with ethylbenzene as solvent is useful in the separation of acetone-tetrahydrofuran. At last,the flow sheet of separating this azeotrope by batch and continual extractive distillation were simulated. The technological parameters obtained can provide the theoretical basis for further industrial application.关键词
萃取精馏/乙苯/丙酮/四氢呋喃Key words
extractive distillation/ ethylbenzene/ acetone /tetrahydrofuran分类
化学化工引用本文复制引用
刘岩,白鹏..萃取精馏分离丙酮-四氢呋喃的研究[J].化学工程,2012,40(12):19-23,5.
