催化精馏法干气制乙苯新工艺的研究  

Study on Preparation of Ethylbenzene with Ethylene in Dry Gas by Catalytic Rectification

作　　者：刘军霞[1] 王云山[2] 张吉瑞[2] 刘耀芳[1] 

机构地区：[1]石油大学(北京)重质油加工国家重点实验室,北京102249 [2]北京服装学院化工研究所,北京100029

出　　处：《石油化工》2003年第4期269-272,共4页Petrochemical Technology

摘　　要：在改性的β沸石催化剂上研究了催化精馏法干气制乙苯的工艺过程,考察了各工艺参数对烷基化反应的影响,并提出了适宜的工艺条件:乙烯质量空速小于0 25h-1、进料苯烯摩尔比大于4、反应压力大于1 5MPa、反应温度150～180℃。在此条件下,乙烯转化率大于96%,乙苯选择性大于94%,反应产物中基本上无二甲苯生成。Preparation of ethylbenzene with ethylene in dry gas by catalytic rectification process over zeolite β was studied. Effects of technological parameters on the alkylation were investigated. Preferred operating conditions were: ethylene WHSV ≤0 25 h -1 , feed mole ratio of benzene/ethylene≥4, pressure≥1 5 MPa and temperaure 150～180 ℃. Conversion of ethylene was over 96% and selectivity of ethylbenzene was over 94%. Moreover, dimethylbenzene was hardly found in the product.

关 键 词：催化精馏法 干气 制备 乙苯 新工艺 研究 Β沸石催化剂 改性 

分 类 号：TQ241.15[化学工程—有机化工]