原料组成对甲苯歧化和烷基转移反应的影响  

Effects of raw material composition on the toluene disproportionation and transalkylation reaction

作　　者：王兆瑞 叶帅 张森 

机构地区：[1]中石化洛阳分公司,河南洛阳471012

出　　处：《聚酯工业》2016年第6期11-16,共6页Polyester Industry

摘　　要：讨论了原料中各组分含量对甲苯歧化和烷基转移反应的影响，C9A的加入促使C8A的生成，其中贡献最大的是三甲苯（T），C10A在原料中的含量应该控制在3％～7％，其中乙基苯、丙基苯同分异构体可以较多的生成目标产物。应严格控制原料中苯、C8A、非芳烃和其他杂质的含量，甲基基团是甲苯歧化与烷基转移反应顺利进行的保证，计量中使用T／C9A＋C10A会更加准确。The effects of different components content in the raw materials on the toluene disproportionation and transalkylation were studied and discussed. The addition of C9A promotes the formation of CsA, of which the largest contribution is trimethylbenzene （T）. The content of C10A in raw materials should be controlled at 3% - 7%. Among them, ethylbenzene and propylbenzene isomers can produce more target products. The content of benzene, CsA, non aromatic and other impurities in raw materials should be strictly controlled. The methyl group is the guarantee for the smooth progress of the toluene disproportionation and transalkylation reaction. Metering in the use of T//C9A ＋ C10A will be more accurate.

关 键 词：PX 甲苯歧化 烷基转移 

分 类 号：TQ241.1[化学工程—有机化工]