润滑油基础油加氢处理催化剂的研制及性能研究
Development and Performance of Hydrotreating Catalyst for Lube Base Oil

本研究针对润滑油异构脱蜡段进料满足硫氮含量低和粘度指数高的要求，开发出一种高活性的深度脱氮兼具芳烃饱和功能的加氢处理催化剂，该催化剂能够将原料中多环芳烃、环烷烃等低粘度指数的非理想组分转化为高粘度指数的理想组分，达到提高粘度指数的目的。以大孔径氧化铝为载体，采用高分散络合技术制备II类活性相催化剂，并对其物性进行表征。以减四线蜡油评价，本加氢处理催化剂可以生产N含量 < 2 ppm，粘度指数 > 140的处理产品，满足异构脱蜡进料要求。
In order to meet the requirements of low sulfur and nitrogen contents and high viscosity index to provide qualified feedstock for hydroisomerization unit, we developed a highly active hydrotreating catalyst with deep hydrodenitrification and aromatics saturation function. This hydrotreating catalyst can convert the unsatisfactory components such as polycyclic aromatic hydrocarbons and cycloalkanes in feeds into the ideal components with high viscosity index, so as to improve the viscos-ity index. II active phase catalysts were prepared by the incipient wetness impregnation approach with organic additives and large porous γ-Al₂O₃ as support, and their physical properties were characterized. The nitrogen content of the hydrotreating products can be reduced to 2 ppm and the VI can be improved from 132 to 145 after hydrotreatment, which is qualified for feeds of hydroisomerization units.