浸渍-抽真空-浸渍方法制备焦化汽油加氢精制催化剂  

Preparation of coking gasoline hydrorefining catalyst by the impregnation-vacuum-impregnation method

作　　者：王丹[1] 周清华 温广明 郭金涛 张文成 Wang Dan;Zhou Qinghua;Wen Guangming;Guo Jintao;Zhang Wencheng(Daqing Chemical Research Center,Petrochemical Research Institute of CNPC,Daqing Heilongjiang 163714,China;Oil Refinery of Daqing Petrochemical Company,Daqing Heilongjiang 163711,China)

机构地区：[1]中国石油石油化工研究院大庆化工研究中心,黑龙江大庆163714 [2]中国石油大庆石化公司炼油厂,黑龙江大庆163711

出　　处：《石油化工》2020年第11期1055-1061,共7页Petrochemical Technology

摘　　要：采用浸渍-抽真空-浸渍的方法制备了高活性Mo-Co-Ni型焦化汽油加氢催化剂GH-01,利用BET,NH3-TPD,XRD,SEM,SEM-EDS,H2-TPR等方法对催化剂结构进行了表征,并与原工业催化剂进行了对比,同时考察了催化剂的加氢活性和稳定性。实验结果表明,GH-01相比原工业催化剂具有更大的孔体积和更高的比表面积。GH-01的活性金属更易于均匀地富集于催化剂外表面,截面呈片状层级分布,活性金属组分易形成楞角活性位,更易还原硫化。以高硫焦化汽油为原料,在工艺参数基本相同、产品精制石脑油硫含量小于0.5μg/g的条件下,GH-01的反应温度较原工业催化剂低8℃,在1500 h的评价试验中,具有良好的活性稳定性。The high-activity Mo-Co-Ni coking gasoline hydrogenation catalyst GH-01 was prepared by the impregnation-vacuum-impregnation method.The structure of the catalyst was characterized by BET,NH3-TPD,XRD,SEM,SEM-EDS,H2-TPR and compared with the original industrial catalyst.The hydrogenation activity and stability of the catalyst were also investigated.The result shows that GH-01 has a larger pore volume and a higher specific surface area than the original industrial catalyst.The active metals of GH-01 are more likely to be evenly concentrated on the outer surface of the catalyst,and the cross-section is distributed in flaky layers.The active metal components are easy to form the active sites of the edges or corners,and they are easier to reduce and sulfide.Using high-sulfur coking gasoline as feed,under the condition that the process parameters are basically the same,and the product refined naphtha sulfur content is less than 0.5μg/g,the reaction temperature of GH-01 is 8℃lower than that of the original industrial catalyst,and in the 1500 h evaluation test,the GH-01 catalyst has good activity stability.

关 键 词：焦化汽油 加氢 催化剂 浸渍 

分 类 号：TQ426.96[化学工程]