成型过程对加氢催化剂载体孔结构的影响  

Effects of molding process on pore structure of hydrotreating catalyst supporters

作　　者：杨义 赵振 付超超 刘占宇 Yang Yi;Zhao Zhen;Fu Chaochao;Liu Zhanyu(SINOPEC Catalyst Dalian Co.,Ltd.,Dalian 116043,Liaoning,China;Fushun Divisionof SINOPEC Catalyst Co.,Ltd.,Fushun 113122,Liaoning,China)

机构地区：[1]中石化催化剂大连有限公司,辽宁大连116043 [2]中国石化催化剂有限公司抚顺分公司,辽宁抚顺113122

出　　处：《工业催化》2020年第6期35-39,共5页Industrial Catalysis

摘　　要：采用挤出成型法制备加氢催化剂载体,研究载体制备过程中捏合工艺、水粉比及不同挤出设备对载体孔结构的影响。结果表明,缩短捏合时间有利于载体孔结构向较大孔区域集中;提高水粉比有利于提高载体的总孔容;与螺杆挤条机相比,柱塞式挤条机生产的载体总孔容较大,且孔径更趋向(6~10) nm集中。采用优化的工艺条件,制备的载体满足产品质量要求,催化剂活性相对较高。To study the influence of molding process,water/powder ratio and different extruding machines on the supporters’ pole structure,hydrotreating catalyst supporters were produced using extrusion molding method. The results indicated that shortening the kneading time facilitated the concentration of carrier’pore structure towards larger pore diameter. The total pore volume was increased by increasing the water/powder ratio. Compared with screw extruder,plunger type extruder produced supporters with larger total pore volume,whose pore diameter aggregated more in the range of (6-10) nm. By adopting the optimized process parameters,the supporters produced met the quality control requirements. The hydrodesulfurization activities of catalysts with plunger type extruder were higher than that of screw extruder.

关 键 词：催化剂工程 成型 载体 孔结构 挤条机 活性 

分 类 号：TQ426.6[化学工程] TE624.9+3[石油与天然气工程—油气加工工程]