混合碳四全加氢镍系催化剂的制备与性能评价  

Preparation and evaluation of nickel based catalysts for full hydrogenation of C4 mixtures

作　　者：郝昭[1] 陈明林 刘军 董万军[1] 展学成 吕龙刚 马好文 HAO Zhao;CHEN Ming-lin;LIU Jun;DONG Wan-jun;ZHAN Xue-cheng;LU Long-gang;MA Hao-wen(No.1 Chemical Department,Sichuan Petrochemical Co Ltd,PetroChina,Chengdu 611930,China;Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China)

机构地区：[1]中国石油四川石化有限责任公司化工一部,四川成都611930 [2]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060

出　　处：《石化技术与应用》2024年第5期319-323,共5页Petrochemical Technology & Application

基　　金：中国石油天然气股份有限公司科技开发项目(项目编号:23-LH-33-01)。

摘　　要：使用共沉淀法和挤条成型工艺小试制备了混合碳四全加氢镍系催化剂,考察了反应压力、体积空速、氢烃体积比等加氢工艺条件对催化剂性能的影响;采用打片成型工艺进行催化剂中试放大制备,并对其性能进行了评价。结果表明:在入口温度为室温,反应压力为2.0 MPa,氢烃体积比为300,进料体积空速为2.0 h^(-1)的优化加氢工艺条件下,小试催化剂可以将混合碳四原料中单烯烃质量分数降低至1.0%以下;与小试催化剂相比,中试放大催化剂堆积密度和径向抗压碎力分别提高73%,302%;中试放大催化剂与进口钯系催化剂在789 h评价周期内的不饱和烃转化率分别为94.26%,89.72%,前者比后者具有更优的低温加氢活性和加氢稳定性。A nickel based catalyst for the full hydrogenation of C4 mixtures was prepared by using co-precipitation method and extrusion molding process in a small scale trial.The effects of hydrogenation process conditions such as reaction pressure,volume space velocity,and hydrogen to hydrocarbon volume ratio on catalyst performance were investigated.The catalyst was prepared in a pilot scale by using a pressure molding process and its hydrogenation performance was evaluated.The results showed that under the optimized hydrogenation process conditions of inlet temperature at room temperature,reaction pressure of 2.0 MPa,hydrogen to hydrocarbon volume ratio of 300,and feed volume space velocity of 2.0 h^(-1),the small scale catalysts could reduce the mass fraction of single olefins in the mixed C4 feedstock to below 1.0%.Compared with small scale catalysts,the bulk density and radial compressive cracking force of the pilot scale catalysts increased by 73%and 302%,respectively.The unsaturated hydrocarbon conversion rates of the pilot scale catalysts and imported palladium based catalysts during the 789 h evaluation cycle were 94.26%and 89.72%,respectively.The pilot scale catalysts had better low temperature hydrogenation activity and excellent hydrogenation stability than the imported palladium based catalysts.

关 键 词：混合碳四 全加氢 中试放大 镍系催化剂 钯系催化剂 转化率 

分 类 号：TE624.93[石油与天然气工程—油气加工工程]