载体孔结构对裂解汽油一段加氢Ni/Al2O3催化剂性能的影响  

Effect of support pore structure on the performance of Ni/Al2O3 catalyst for first-stage hydrogenation of pyrolytic gasoline

作　　者：施晓秋 刘仲能[1] 余强[1] 刘东东 董雁春 Shi Xiaoqiu;Liu Zhongneng;Yu Qiang;Liu Dongdong;Dong Yanchun(Shanghai Research Institute of Petrochemical Technology,Sinopec,Shanghai 201208,China)

机构地区：[1]中国石化上海石油化工研究院

出　　处：《工业催化》2019年第10期50-53,共4页Industrial Catalysis

基　　金：国家重点研发计划材料基因工程关键技术与支撑平台专项(2017YFB0702800)

摘　　要：氧化铝载体的孔结构对裂解汽油一段加氢催化剂性能的影响至关重要。通过优化原粉配比、载体焙烧温度和柠檬酸浓度优化载体孔结构,以获得较大比表面积、大孔容和大孔径的载体。与未优化载体相比,孔体积提高24%,孔径提高40%。在反应器入口温度50℃、反应压力2.6 MPa和体积空速3.0 h-1条件下,使用优化载体制备的催化剂对裂解汽油进行加氢评价试验,结果表明,催化剂稳定性好于参比剂,双烯值稳定在<1.5 gI 2·(100g油)-1。The pore structure of alumina support is very important tOthe performance of first-stage hydrogenation catalyst for pyrolytic gasoline.The pore structure of the carrier was adjusting by optimizing the ratiOof raw powder,calcination temperature of the carrier and concentration of citric acid tOobtain carrier with large specific surface area,pore volume and pore diameter.Compared with the non-optimized carrier,the pore volume and pore diameter of the optimized carrier increased by 24%and 40%.Under the conditions of reactor inlet temperature 50℃,reaction pressure 2.6 MPa and volume space velocity 3.0 h-1,the catalysts prepared by the optimized carrier were used tOevaluate the hydrogenation of pyrolysis gasoline.The results showed that the stability of the catalyst was better than the reference catalyst,and the diene value was below 1.5 gI 2·(100g oil)-1.

关 键 词：催化剂工程 氧化铝载体 孔结构 镍基催化剂 裂解汽油加氢 

分 类 号：TQ426.6[化学工程] TE624.43[石油与天然气工程—油气加工工程]