摘要
以改性氧化铝为载体,采用等体积浸渍法负载活性金属组分W和Ni,制备出润滑油加氢催化剂CAT-A,分别对其进行扩孔、酸改性处理,制得相应催化剂CAT-B,CAT-C。利用X射线粉末衍射、N2吸附-脱附、氨气程序升温脱附、扫描电子显微镜等分析手段,对所制备催化剂进行了表征;同时,以减四线馏分油为原料,在中试固定床加氢装置上,对催化剂进行了加氢性能评价。结果表明:扩孔处理使CAT-A催化剂上的可接触活性位点增加,有利于深度脱硫脱氮,酸改性则有利于硫化物在高温下的裂化脱除;在反应温度为390℃时,CAT-B催化剂加氢反应脱硫率、脱氮率分别为99.5%,99.7%,不低于280℃馏分收率(质量分数,下同)为94%,CAT-C催化剂的上述各值依次为99.6%,99.8%,90%。
The lubricating oil hydrogenation catalyst CAT-A was prepared with modified alumina as carrier,isovolumic impregnation method loaded W and Ni as active metal components.Then catalysts CAT-B and CAT-C were prepared by pore enlargement and acid modification respectively.These catalysts were characterized by the methods of X-ray powder diffraction,N2 adsorption-desorption,ammonia temperature-programmed desorption,electron transmission microscopy,and the hydrogenation performances of these catalysts were evaluated in a pilot-scale fixed bed hydrogenation device with the vacuum cut 4th distillate oil as raw material.The results showed that the accessible active sites on CAT-A was increased through pore enlargement treatment,which was beneficial to deep desulfurization and denitrification,and acid modification was beneficial to the cracking removal of sulfide at high temperature.At the reaction temperature 390℃,the desulfurization rate and denitrification rate of catalyst CAT-B was 99.5%and 99.7%respectively,and the yield of distillates not lower than 280℃was 94%.The above parameters of catalyst CAT-C was 99.6%,99.8%and 90%in sequence.
作者
刘雪军
甄涛
宋君辉
金吉海
焦祖凯
LIU Xue-jun;ZHEN Tao;SONG Jun-hui;JIN Ji-hai;JIAO Zu-kai(Production Operation Department of Asphalt Limited Liability Company,CNOOC,Binzhou 256600,China;Research Institute of Oil&Petrochemical Co Ltd,CNOOC,Beijing 102200,China)
出处
《石化技术与应用》
CAS
2022年第5期302-306,共5页
Petrochemical Technology & Application
基金
中海石油炼化有限责任公司资助项目(项目编号:LHTISA 20190035)。
关键词
润滑油
加氢催化剂
扩孔处理
酸改性
加氢脱硫
加氢脱氮
lubricating oil
hydrogenation catalyst
pore enlargement treatment
acid modification
hydrodesulfurization
hydrodenitrification
