C_9芳烃中连三甲苯与茚满的精密精馏和深冷分离  

Precise Distillation and Cryogenic Separation of Hemellitene and Indene from C_9 Aromatic mixtures

作　　者：田文彦[1] 

机构地区：[1]江阴职业技术学院化纺系,江阴214405

出　　处：《精细石油化工进展》2007年第9期41-42,45,共3页Advances in Fine Petrochemicals

摘　　要：介绍了采用精密精馏与深冷结晶离心分离方法从混合C_9芳烃中分离连三甲苯与茚满产品。由于连三甲苯熔点～24.5℃,茚满熔点-51.4℃,在-40℃下深冷结晶可使连三甲苯充分结晶,再经离心分离,可制得纯度达91%以上的连三甲苯产品;离心液再经精密精馏,可制得纯度达96%的茚满产品。Preparation of hemellitene （1,2,3 - trimethylbenzene） and indefie （2,3 - dihydroindene） from C9 aromatic mixture by mean of precise distillation and cryogenic centrifugal separation was introduced. Due to the melting point of hemellitene and indene being - 24.5 ℃ and - 51.4℃ separately, enough cryogenic solidification occurred at - 40℃ ; and through further centrifugal separation, the hemellitene with purity higher than 91% could be obtained ; then Key Words hydroindene） through refined distillation, the indene product with purity up to 96 % could be finally achieved.

关 键 词：C9芳烃 精密精馏 连三甲苯 茚满 

分 类 号：TQ202[化学工程—有机化工]