磁稳定床反应器中己内酰胺加氢精制应用研究  

Study on Purification of Caprolactam in Magnetically Stabilized Bed Reactor

作　　者：傅送保[1] 朱泽华[1] 罗耀邦[1] 孟祥堃[2] 慕旭宏[2] 闵恩泽[2] 

机构地区：[1]中国石油化工股份有限公司巴陵分公司,湖南岳阳414003 [2]中国石油化工股份有限公司石油化工科学研究院,北京100083

出　　处：《石油化工》2004年第4期364-367,共4页Petrochemical Technology

基　　金：国家重点基础研究发展规划项目(2000048005)。

摘　　要：采用工业原料在6 kt/a中试装置上对以镍系非晶态合金为催化剂的磁稳定床反应器中己内酰胺的加氢精制过程进行了研究,考察了各种操作参数对反应结果的影响以及催化剂的稳定性。试验结果表明,己内酰胺水溶液经预溶氢后磁稳定床反应器加氢精制或气液固三相磁稳定床反应器加氢精制,在氢液体积比0.7-1.5、反应温度80-100℃、反应压力0.4-0.9 MPa、空速30-50 h-1、磁场强度15-32 kA/m的条件下,加氢后溶液的高锰酸钾值(PM)从50 s提高到2 000 s以上,催化剂寿命达3 200 h以上;与工业上搅拌釜式己内酰胺加氢精制工艺相比,催化剂耗量可降低60％。A magnetically stabilized bed (MSB) reactor with amorphous nickel alloy catalyst (SRNA-4) was used for purification of caprolactam. Effects of various operating conditions on the hydrogenation were investigated. Lifetime of SRNA-4 catalyst was also examined. By adopting MSB hydrogenation process when hydrogen/liquid volume ratio was 0.7- 1.5, reaction temperature 80 - 100 ℃ ,reaction pressure 0.4 - 0.9 MPa, liquid hourly space velocity 30 - 50 h-1 ,and magnetic field intensity 15 - 32 kA/m,the PM number of caprolactam solution could be increased from 50 s to more than 2 000 s and the lifetime of SRNA-4 catalyst was more than 3 200 h. Catalyst consumption could be reduced by 60% compared with that of slurry reactor.

关 键 词：磁稳定床反应器 己内酰胺 非晶态合金 加氢 

分 类 号：TQ225.261[化学工程—有机化工]