化学工程2018，Vol.46Issue(5)：18-22,58,6.DOI:10.3969/j.issn.1005-9954.2018.05.004
变压精馏分离甲醇-苯体系的模拟与优化
Simulation and optimization of the pressure-swing distillation for methanol-benzene separation
摘要
Abstract
Both methanol and benzene as important organic solvents are widely used in paints,coatings,pharmaceutical and other fields.Based on the pressure-sensitive of the mixture of methanol-benzene,the process of separating this azeotropic system via pressure-swing distillation (PSD)is simulated by Aspen Plus.The process is optimized by sequential iterative method which takes the minimum total annual cost (TAC) as the objective function,and the optimum process parameters are determined:for low pressure column,theoretical plate number 19,feed plate 12th and reflux ratio 0.7;for high pressure column,theoretical plate number 21,feed plate 14th and reflux ratio 1.0.The purity of the methanol and benzene obtained 99.9％.Meanwhile,the partial heat integration schemes of methanol-benzene process via pressure swing distillation have been explored,and the results show that it can reduce the energy consumption by 42.7％ compared with the conventional pressure swing distillation.And those results provide a reference for the further experimental study of the separation of methanol benzene and the other systems.关键词
甲醇-苯/变压精馏/分离/模拟优化Key words
methanol-benzene/pressure-swing distillation/separation/simulation and optimization分类
化学化工引用本文复制引用
吕利平,梁爽,诸林,李航,孙诗瑞,曾行艳,陈淑蓉..变压精馏分离甲醇-苯体系的模拟与优化[J].化学工程,2018,46(5):18-22,58,6.基金项目
重庆市教委项目(KJ1712307) （KJ1712307）
重庆市涪陵区科委项目(FLKJ,2016ABA1026) （FLKJ,2016ABA1026）
长江师范学院青年项目(2015XJXM03) （2015XJXM03）
长江师范学院大学生创新训练项目(2016cxx089) （2016cxx089）
长江师范学院创新创业项目(2016cxx090) （2016cxx090）
全国大学生创新创业训练项目(201710647001) （201710647001）
