| abstract |
The present invention relates to a catalyst for selective hydrotreating of aromatic-rich heavy distillate oil and its preparation method and application. The catalyst, based on the total weight of the catalyst, comprises the following components: a) 1-10% NiO; b) 3-15% MoO 3 ; c) 3-30% WO 3 ; d) 45-93% composite Carrier; wherein, the composite carrier has a double-porous structure with a pore size range of 8-10 nm and 12-15 nm. The catalyst of the invention can selectively hydrogenate aromatic-rich heavy distillate oil, selectively hydrogenate and saturate fused-ring aromatic hydrocarbons to generate cycloalkylbenzene series, the conversion rate is more than 95%, the selectivity is more than 92%, and the raw materials are retained. Aromatic hydrocarbons, the retention rate of aromatic hydrocarbons is greater than 92%, and the desulfurization and nitrogen rate of heterocyclic compounds such as sulfur and nitrogen in the raw materials are removed at the same time, and the nitrogen rate is greater than 98%, and good technical effects have been achieved. |