加氢法生产环己烷1,2-二甲酸二(2-乙基己)酯工艺  

Preparation of di(2-ethylhexyl)1,2-cyclohexane dicarboxylate by hydrogenation

作　　者：费亚南[1] 赵甲[1] 李孝国[1] 孙国方[1] 高鹏[1] 郑修新[1] 刘有鹏[1] 于海斌[1] 

机构地区：[1]中海油天津化工研究设计院,天津300131

出　　处：《化工进展》2014年第11期3057-3060,3081,共5页Chemical Industry and Engineering Progress

摘　　要：以邻苯二甲酸二(2-乙基己)酯(DEHP,工业级)为原料,采用固定床加氢工艺和贵金属Ru-Pd催化剂,制备环己烷1,2-二甲酸二(2-乙基己)酯。分别考察了温度、压力、空速、氢气与原料的体积比对反应活性的影响。试验结果表明:在反应温度190℃、压力15MPa、体积空速0.5h-1、氢气与原料的体积比为800∶1的条件下,原料DEHP转化率保持在99.99%以上,目标产物选择性高于99.7%。连续运行1000h,催化剂仍具有优异的加氢活性。Di（2-ethylhexyl）1,2-cyclohexane dicarboxylate was prepared,by using bis（2-ethylhexyl） phthalate （DEHP,industrial grade） as raw material,and with fixed-bed hydrogenation process and noble metal Ru-Pd catalyst. The influence of temperature,pressure,space velocity and volumetric ratio of hydrogen to oil on catalytic activity were investigated. Under process conditions of reaction temperature 190℃,pressure 15MPa,space velocity 0.5h^-1 and volumetric ratio of hydrogen to oil 800∶1,DEHP conversion was above 99.99%and selectivity was higher than 99.7%. Moreover,the catalyst kept excellent hydrogenation activity during 8000h test running.

关 键 词：邻苯二甲酸二(2-乙基己)酯 加氢 环己烷1 2-二甲酸二(2-乙基己)酯 环保增塑剂 

分 类 号：TQ414.99[化学工程]