二氯乙烷连续催化氨化合成乙二胺  

CONTINUOUS CATALYTIC SYNTHESIS OF ETHYLENEDIAMINE FROM DICHLOROETHANE AND AMMONIA

作　　者：邓信忠[1] 裴世红[1] 程怡[1] 王晓冰[1] 李磊[1] 朱虹[1] 戴玺[1] 郭瓦力[1] 

机构地区：[1]沈阳化工大学,辽宁沈阳110142

出　　处：《精细石油化工》2013年第1期8-12,共5页Speciality Petrochemicals

基　　金：辽宁省教育厅科研项目(LT2010086)

摘　　要：以二氯乙烷为原料、氯化亚铜和2,2-联吡啶为催化剂,连续制备乙二胺。通过单因素实验考察了影响因素,通过响应面实验设计优化了工艺条件,适宜的工艺条件为:反应温度120℃,反应压力4 MPa,氨烷比24.4,催化剂加入量0.48g,氨水质量分数60%,双催化剂质量比1∶1,反应停留时间7min,在该工艺条件下乙二胺的收率为64.24%。与间歇工艺相比,连续催化氨化法制备乙二胺明显提高了收率,缩短了反应周期,降低了物耗,减少了氯化氢、氨气在空气中的逸散引起的环境污染,反应条件温和、安全性高。The continuous ethylenediamine preparation was realized by taking dichloroethane as raw material, cuprous chloride and 2,2-bipyridine as catalysts. The reaction regularity and influencing fac- tors were studied by single factor experiments. The optimum reaction conditions were obtained by re- sponse surface methodology （RSM）. Under the optimum conditions of reaction temperature 120 ℃, reaction pressure 4 MPa, the ratio of ammonia to dichloroethane 24.4, the amount of catalyst 0.48 g, ammonia concentration 60%, the quality ratio of dual-catalyst 1 ： 1, reaction time 7 min, the yield of ethylenediamine could be up to 64. 24%. Compared with batch process, the yield of continuous process was significantly improved, the reaction time was shortened, material consumption was re- duced, environmental pollution caused by the escape of ammonia and hydrogen chloride in the air was reduced. The operating condition and security got better. It can be proved that the continuous process is more efficient, energy conservation and environmentally friendly.

关 键 词：二氯乙烷 连续 催化氨化 乙二胺 

分 类 号：TQ413.26[化学工程]