焦化粗苯加氢脱硫脱氮催化剂工艺条件研究  

Research on the process conditions of the catalysts for hydrogenation desulfurization and denitrification of coking crude benzol

作　　者：赵国强[1] 赖崇伟[1] 陈耀壮[1] 王莉[1] 应理[1] 

机构地区：[1]西南化工研究设计院有限公司,四川成都610225

出　　处：《工业催化》2014年第11期881-884,共4页Industrial Catalysis

摘　　要：对研制的焦化粗苯预加氢催化剂HDA016和主加氢脱硫催化剂HDB017进行工艺条件试验,在预加氢温度180℃、主加氢温度270℃、液体流速0.15 L·h-1、氢油体积比600∶1、预加氢段液体空速1.88 h-1、主加氢段液体空速0.75 h-1和反应压力2.5 MPa条件下,进行催化剂连续寿命考察。结果表明,产品中硫含量低于0.7 mg·L-1,氮含量约维持在1 mg·L-1。采用压汞法对催化剂的比表面积以及孔结构进行测试,结果表明,预加氢催化剂HDA016比表面积219.3 m2·g-1,平均孔径1.56 nm,最可几孔径1.71 nm,孔容0.19 m L·g-1;主加氢催化剂HDB017比表面积196.6 m2·g-1,平均孔径1.58 nm,最可几孔径1.88 nm,孔容0.15 m L·g-1。XRD测试结果显示,活性金属组分负载在γ-Al2O3上,达到了非常高的分散度。The process condition experiments of the catalysts for coking crude benzol hydrogenation desul-furization were carried out. Under the condition of prehydrogenation temperature 180℃,main hydrogenation temperature 270 ℃,liquid flow rate 0. 15 L·h-1 ,volume ratio of hydrogen to oil 600：1,liquid airspeed of preliminary and main reactor 1. 88 h-1 and 0. 75 h-1 respectively,and reaction pressure 2. 5 MPa,the continuous life span experiments of HDA016 and HDB017 catalysts were investigated. The results indicated that the sulfur content and the nitrogen content in the product were less than 0. 7 mg·L-1 and 1 mg·L-1 , respectively. The specific surface area and pore structure of the catalysts were characterized by mercury injection method. The results showed that specific surface area of 219. 3 m2 ·g-1,average pore size of 1. 56 nm,most probable aperture 1. 71 nm and pore volume 0. 19 mL·g-1 of HDA016 prehydrogenation catalyst were attained;The specific surface area,average pore size,most probable aperture and pore vol-ume of HDB017 hydrogenation catalyst reached 196. 6 m2 ·g-1 ,1. 58 nm,1. 88 nm and 0. 15 mL·g-1 , respectively. The results of XRD characterization showed that the active metal component loaded onγ-Al2 O3 possessed a very high degree of dispersion.

关 键 词：有机化学工程 粗苯 加氢 脱硫 脱氮 HDA016预加氢催化剂 HDB017主加氢催化剂 

分 类 号：TQ426.94[化学工程] TQ241.11