电子级丙酸乙酯合成工艺的模拟及优化  

Simulation and optimization of synthesis process of electronic-grade ethyl propionate

作　　者：梁术 李光科 张卫海 王玉鑫[1] 郭建军 石磊[1,2,3] Liang Shu;Li Guangke;Zhang Weihai;Wang Yuxin;Guo Jianjun;Shi Lei(Key Laboratory of Resources Chemicals and Materials of Ministry of Education,Shenyang University of Chemical Technology,Shenyang Liaoning 110020,China;Shandong Shida Shenghua Chemical Group Co.,Ltd.,Dongying Shandong 257500,China;Institite of Industrial Chemistry and Energy Technology,Shenyang University of Chemical Technology,Shenyang Liaoning 110020,China)

机构地区：[1]沈阳化工大学资源化工与材料教育部重点实验室,辽宁沈阳110020 [2]山东石大胜华化工集团股份有限公司,山东东营257500 [3]沈阳化工大学能源与化工产业技术研究院,辽宁沈阳110020

出　　处：《石油化工》2022年第1期15-23,共9页Petrochemical Technology

基　　金：新疆建设兵团第八师科技计划(2020GY02);辽宁省教育厅重点攻关和地方服务项目(LDB2019005);国家重点研发计划(2018YFB0604500);高水平创新团队国(境)外培养重点项目(2018LNGXGJWPY-ZD002)。

摘　　要：提出了一种电子级丙酸乙酯合成的新工艺,即在酯化合成丙酸乙酯的过程中,采用无机分子筛膜脱水并经实验验证效果,打破了乙醇-丙酸乙酯-水三元恒沸体系,避免了萃取剂和带水剂的使用;利用Aspen Plus V10化工模拟软件对丙酸与乙醇摩尔比为1∶1的该丙酸乙酯连续合成工艺进行了模拟及优化。模拟结果表明,在优化工艺条件下,采用两个精馏塔可实现丙酸乙酯产品纯度大于99.9999%(w),水和乙醇含量均低于1×10^(-6)(w),丙酸乙酯设计产能为8000 t/a时总能耗为2.78×10^(6)kJ/h。新工艺不仅节约了投资成本,提升了产能,且在低能耗下实现了高品质丙酸乙酯的连续合成。A new process for the synthesis of electronic-grade ethyl propionate was proposed.In the synthesis process of ethyl propionate by esterification,inorganic molecular sieve membrane was used for dehydration and its effect was verified by experiment.The ternary azeotropic system of ethanol-ethyl propionate-water was broken,and the use of extractant and water carrying agent was avoided.The continuous synthesis process of ethyl propionate with molar ratio of propionic acid to ethanol of 1∶1 was simulated and optimized by Aspen Plus V10 chemical simulation software.Simulation results showed that under optimized process conditions,the purity of obtained ethyl propionate was higher than 99.9999%(w)with less than 1×10^(-6)(w)water and ethanol in it,which could be achieved by using only two distillation columns.The designed capacity of ethyl propionate was 8000 t/a and the total energy consumption was 2.78×10^(6) kJ/h.The new process not only saved the investment cost and enhanced the production capacity,but also realized the continuous synthesis of high-quality ethyl propionate with low energy consumption.

关 键 词：丙酸乙酯 共沸物分离 反应精馏 工艺模拟 Aspen Plus 

分 类 号：TQ225.24[化学工程—有机化工]