渗透汽化-酯化反应耦合生产乙酸乙酯过程模拟与分析  

Simulation and analysis of pervaporation-esterification coupling process for ethyl acetate production

作　　者：王乐 胡亚博 丁良辉 张国雯 陆佳伟 汤吉海 张竹修 崔咪芬 陈献 乔旭 WANG Le;HU Ya-bo;DING Liang-hui;ZHANG Guo-wen;LU Jia-wei;TANG Ji-hai;ZHANG Zhu-xiu;CUI Mi-fen;CHEN Xian;QIAO Xu(State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China;School of Environmental Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM),Nanjing 210009,China)

机构地区：[1]南京工业大学化工学院材料化学工程国家重点实验室,江苏南京210009 [2]南京工程学院环境工程学院,江苏南京211167 [3]国家“江苏先进生物与化学制造协同创新中心”,江苏南京210009

出　　处：《高校化学工程学报》2023年第2期249-256,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：国家重点研发计划(2017YFB0307304);国家自然科学基金(21276126,21676141,61673205);江苏省重点研发计划重大科技示范项目(BE2021710);江苏高校“青蓝工程”项目;江苏高校优势学科建设工程资助项目(PAPD)。

摘　　要：为了解决乙酸乙酯生产过程中转化率低的问题,提出渗透汽化-酯化反应耦合技术。首先利用Aspen Custom Modeler(ACM)软件建立内置式连续性渗化膜反应器(PVMR)模型并进行验证,然后利用Aspen Plus考察反应温度、进料酸醇比、膜面积与反应液体积比对PVMR过程性能的影响。结果表明,乙醇转化率增量与反应温度之间呈正相关性;随着进料酸醇比增大,乙醇转化率增量呈先增大后减小趋势;增加膜面积与反应液体积比能促进PVMR性能。在反应温度90℃,进料酸醇比为2,膜面积与反应液体积比为100 m^(-1)时,PVMR过程乙醇转化率为82.4%。研究结果为PVMR生产乙酸乙酯节能集成工艺开发提供基础和参考。In order to solve the problem of low ethanol conversion in the production of ethyl acetate via esterification of acetic acid and ethanol,a pervaporation-esterification coupling technology was proposed.A mathematic model of the pervaporation membrane reactor(PVMR)was established using the Aspen Custom Modeler and verified with the experiment results.Effects of reaction temperature,acid to alcohol ratio and membrane area to reaction liquid volume ratio on process performance were investigated in detail by Aspen Plus.The results show that there is a positive correlation between ethanol conversion increment and reaction temperature.With the increase of acid to alcohol ratio,ethanol conversion increment increases first and then decreased.The performance of PVMR is improved by enhancing the ratio of the membrane area to the volume of the reaction liquid.The optimum conditions were investigated as follows:reaction temperature 90℃,acid to alcohol ratio 2,and the ratio of the membrane area to the volume of the reaction liquid is 100 m^(-1).Under the optimal conditions,ethanol conversion was 82.4%in the PVMR process.The results are useful in energy saving integrated PVMR processes for ethyl acetate production.

关 键 词：膜反应器 渗透蒸发 乙酸乙酯 计算机模拟 酯化 

分 类 号：TQ028.8[化学工程]