1,3,5-三甲苯联产1,2,4,5-四甲苯生产工艺的研究  

Study on the Production of Mesitylene and Durene

作　　者：张卫江[1] 曲红梅[1] 孙兴华[1] 王凤东[1] 杨志才[1] 

机构地区：[1]天津大学化学工程研究所,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2002年第1期108-112,共5页Journal of Tianjin University：Science and Technology

摘　　要：开发了异构化和烷基化反应联合生产高纯 1,3,5 -三甲苯联产 1,2 ,4,5 -四甲苯的新工艺 ,确定了异构化和烷基化反应的最佳工艺条件 .主要研究了三甲苯异构化的初始反应速率、化学反应平衡和烷基化反应对甲乙苯的消除作用 ,在此基础上 ,提出了以混合芳烃为原料进行异构化和烷基化反应联合运行法生产 1,3,5 -三甲苯联产 1,2 ,4,5 -四甲苯的新工艺 .此工艺已实现了 1,3,5 -三甲苯 6 0 0 t/年的工业化生产 ,产品纯度为 98.5 % ,效益显著 .A new technique-'A combination of isomerization and alkylation to produce high pureity mesitylene and durene'is proposed. The optimum reaction conditions of isomerization and alkylation are determined; the reactive equilibrium of isomerization and the eliminating action of alkylation on the accumulation of metylethylbenzene are studied chiefly. As a result, a novel process integrating isomerization and alkylation is developed with mixed aromatic hydrocarbon as raw matetial. Moreover the reactive mechanism of isomerization is discussed. Using this combination technology, the mesitylene of 600 t/y has been produced with a purity of 98.5%,large profits can be brongt about.

关 键 词：联合生产工艺 异构化 烷基化 1 3 5-三甲苯 1 2 4 5-四甲苯 初始反应速率 化学反应平衡 

分 类 号：TQ241.12[化学工程—有机化工]