关键词: 固定床渣油加氢, 加氢脱金属催化剂, 氧化铝, 孔结构, 活性金属, 助剂

Abstract: Residue hydrodemetallization (HDM) catalyst is one of the key catalysts in residue hydrogenation technology. Development of high-performance HDM catalysts is of great significance for improving the adaptability of inferior raw material and extending the operation period of the fixed bed residue hydrotreating unit. The research progress of HDM catalysts is reviewed from three aspects of supports, active metals and promoters. Firstly, the influence of support pore structure on HDM catalysts was analyzed, and various pore-enlarging methods of Al2O3 support such as pore-enlarging additives method, hydrothermal treatment method and low-temperature sintering method were introduced. Secondly, after comparing the HDM activity of various active metal components, Mo shows the best hydrodemetallization performance. The addition of Co, Ni, Fe, W and other active metals can further improve the catalytic performance of the HDM catalyst to various degrees. Preparation methods of catalysts such as impregnation method, kneading method and co-precipitation method were summarized. Finally, the influence of P, B and other promoters on the activity and stability of HDM catalyst was discussed. It is pointed out that the main research direction of HDM catalyst in the future is to improve hydrodemetallization activity, metal-storage capacity, resistance to coking and reduction of catalysts bulk density.

Key words: fixed bed residue hydrotreating;hydrodemetallization catalyst;alumina;pore structure, active metal;promoter