聚甲氧基二甲醚合成工艺及产业化述评  

Review on the synthesis process and industrialization of polyoxymethylene dimethyl ethers

作　　者：耿雪丽 孟莹[1] 从海峰 李洪[1] 高鑫[1] 李鑫钢[1] GENG Xueli;MENG Ying;CONG Haifeng;LI Hong;GAO Xin;LI Xingang(School of Chemical Engineering and Technology,Tianjin University,National Engineering Research Center of Distillation Technology,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin 300350,China)

机构地区：[1]天津大学化工学院,精馏技术国家工程研究中心,天津化学化工协同创新中心,天津300350

出　　处：《化工进展》2020年第12期4993-5008,共16页Chemical Industry and Engineering Progress

基　　金：国家重点研发计划(2018YFB0604900)。

摘　　要：聚甲氧基二甲醚(DMMn)作为一种新型绿色环保柴油添加剂,因其具有较高的十六烷值和含氧量,能有效减轻燃烧后的污染物排放,同时完善以煤基甲醇为源头的煤化工产业结构,这使得其合成工艺及产业化进程受到国内外学者的广泛关注。本文对国内外DMMn合成工艺、国内工业化布局以及未来发展前景进行综述。在现有工艺基础上,归纳总结了由甲醇出发经不同中间产物合成DMM_n的各类合成路线的特点。通过分析制约DMMn工业化进程的关键因素,特别是结合当前全球性新冠肺炎疫情导致的石油价格断崖式下跌,给煤化工产业带来巨大的冲击,认为反应精馏工艺将成为未来DMMn产品推广和工业应用最具有竞争潜力的工艺技术路线。Polyoxymethylene dimethyl ethers(DMMn),as a new type of green and environmentally friendly diesel fuel additive,can effectively reduce the emission of pollutants after combustion and improve the industrial structure of coal chemical industry with coal-based methanol as the source because of its high cetane number and oxygen content.Therefore,the synthesis process and industrialization process of DMMn are widely concerned by scholars at home and abroad.The domestic and foreign DMMn synthesis process,industrial layout and future development prospects are reviewed.Based on the existing process,the characteristics of various synthesis routes of methanol to DMMn through different intermediate products are summarized.Through the analysis of the key factors restricting the DMMn industrialization process,especially the sharp drop in oil price caused by the global COVID-19,which has brought a huge impact on the coal chemical industry,reactive distillation is considered as the most competitive technology route for DMMn product promotion and industrial application in the future.

关 键 词：聚甲氧基二甲醚 柴油添加剂 Schulz-Flory分布 工艺路线 反应精馏 

分 类 号：TH3[机械工程—机械制造及自动化]