天然气化工Issue(6)：54-58,5.
苯-环己烯-环己烷物系的萃取精馏工艺模拟及优化
Simulation and optimization of extractive distillation process of benzene-cyclohexene-cyclohexane system
佟瑞鑫 1米万良 1乐恺 1陆平 2白芳 2华超2
作者信息
- 1. 北京科技大学机械工程学院，北京 100183
- 2. 中国科学院过程工程研究所绿色过程与工程重点实验室，北京 100190
- 折叠
摘要
Abstract
To optimize operation conditions, the NRTL thermodynamic model in Aspen Plus was used to simulate the extractive distillation process of benzene (BZ)-cyclohexene (HE)-cyclohexane (HA) system with N,N-dimethyl acetamide as extractant. The optimum operation parameters for the first extractive distillation column were determined as follows: theoretical stage number of 36, feedstock feeding at stage 12, solvent feeding at stage 5, reflux ratio of 2.33, solvent/feedstock mass ratio of 3.2 and solvent inlet temperature of 65℃. Under above optimized conditions, the requirement for industrial separation of BZ-HE-HA could be satisfied-the total mass fraction of HE and HA in the column bottom product is lower than 0.01%, the recovery rate of BZ is over 99.9%and the mass fraction of BZ in the column top product is below 0.01%, and the energy consumption could be reduced.关键词
萃取精馏/苯/环己烯/环己烷/模拟Key words
extractive distillation/benzene/cyclohexene/cyclohexane/simulation分类
化学化工引用本文复制引用
佟瑞鑫,米万良,乐恺,陆平,白芳,华超..苯-环己烯-环己烷物系的萃取精馏工艺模拟及优化[J].天然气化工,2013,(6):54-58,5.
