四氢呋喃双效精馏提纯工艺及其模拟  

Simulation of double-effect distillation for purification of tetrahydrofuran

作　　者：刘保柱[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,杭州310032

出　　处：《浙江工业大学学报》2005年第5期560-562,共3页Journal of Zhejiang University of Technology

摘　　要：利用四氢呋喃(THF)水溶液的共沸点随压力改变的特性,提出加压塔-常压塔双塔提纯工艺.常压塔的馏出物浓度达到94.5%左右,加压塔顶馏出液和底部产品浓度分别达到88.8%和99.9%,塔顶馏出液返回常压塔.将加压塔的冷凝器和常压塔再沸器热耦合,建立双效精馏流程.采用PRO/II对工艺过程进行模拟,结果表明该工艺达到满意的效果,并且双效精馏流程可节能42.3%.The azeotropic temperature of tetrahydrofuran（THF） and water changes with the pressure, based on this characteristic a purification process of pressurized column and atmospheric column was established. THF content of distillation of atmospheric column is about 94.5%, THF mass fraction in overhead product and bottom residue of pressurized column reach 88.8% and 99. 9 %, the overhead product return to atmospheric column. A double-effect distillation process was established with the condenser of pressurized column matching the reboiler of atmospheric column, PRO/Ⅱ has been used to simulate this distillation process ,results of simulation showed obvious improvement, the energy of double-effect distillation is decreased by 42.3 %.

关 键 词：四氢呋喃 双效精馏 模拟 节能 

分 类 号：TQ028.3[化学工程] TQ021.8