石油化工2016，Vol.45Issue(7)：834-840,7.DOI:10.3969/j.issn.1000-8144.2016.07.011
萃取精馏法精制1，2-环氧丁烷的研究
Purification of 1,2-butylene oxide by extractive distillation
辜乌根 1胡松 1李木金 1杨卫胜1
作者信息
- 1. 中国石化 上海石油化工研究院，上海 201208
- 折叠
摘要
Abstract
The crude 1,2-butylene oxide(BO) which was produced with the catalytic epoxidation of 1-butylene contained water,methanol,propanal,acetone and other impurities. The relative volatilities of these impurities to BO were close to 1,so it was hard to separate the impurities by the conventional distillation to obtain high purity BO. The extractive distillation approach was applied to purify BO with the selected extraction solvent 3-methyloctane. The extractive distillation process was simulated and investigated by using NRTL model in Aspen Plus,and the condition was obtained as follow:crude BO flowrate of 1 000 kg/h, solvent ratio of 4,theoretical plate number of the extractive distillation column of 40,crude BO feed stage of 21st,feed temperature of extraction solvent of 42℃,organic reflux flowrate and water flowrate of the extractive distillation column of 89 kg/h and 62 kg/h respectively,theoretical plate number of the product column of 16,feed stage of 12th, reflux ratio of 0.9. The results demonstrated that the purity of BO product can reach 99.79%(w) with the proposed extractive distillation process, and the water and aldehydes mass fraction of BO product were less than 200×10-6(w) and 50×10-6(w) respectively,which can be used as the polymeric monomer.关键词
1,2-环氧丁烷/萃取精馏/流程模拟Key words
1,2-butylene oxide/extractive distillation/process simulation分类
化学化工引用本文复制引用
辜乌根,胡松,李木金,杨卫胜..萃取精馏法精制1，2-环氧丁烷的研究[J].石油化工,2016,45(7):834-840,7.
