Hydrogenation catalyst containing vb metal component and its preparation and application

Abstract

The invention relates to a group VB metal component-containing hydrogenation catalyst, preparation and an application thereof. The catalyst contains a carrier and a hydrogenation activity metal component loaded on the carrier, wherein the hydrogenation activity metal component is a combination comprising one at least selected from a group VIB metal component and one at least selected from a group VB metal component, the carrier contains alumina, the pore volume of the alumina is 0.9-1.2 ml / g, the specific surface area is 50-300 m<2> / g, the pore volume of the pores having a diameter of 10-30 nm accounts for 55-80% of the total pore volume, and the pore volume of the pores having a diameter of 300-500 nm accounts for 10-35% of the total pore volume, wherein the carrier preparation method comprises: mixing pseudoboehmite-containing hydrated alumina P1 and a modifier P2 of the P1, molding, drying and calcinating, wherein a weight mixing ratio of the P1 to the P2 is 20-95:5-80, the k value of the P2 is more than or equal to 0 and is less than or equal to 0.9, the k is equal to DI2 / DI1, the DI1 is the acid dispersion index of the pseudoboehmite-containing hydrated alumina P1, and the DI2 is the acid dispersion index of the modifier P2 of the P1. Compared with the group VB metal component-containing hydrogenation catalyst in the prior art, the group VB metal component-containing hydrogenation catalyst of the present invention has significantly-increased hydrogenation demetallization and asphaltene-removing activity.

Description

technical field [0001] The invention relates to a hydrogenation catalyst, its preparation and application, in particular to a hydrogenation catalyst suitable for heavy oil processing, its preparation and its application. Background technique [0002] As the world-wide contradiction between heavy and low-quality crude oil and diversified and light-weight demand for petrochemical products becomes increasingly acute, the main task of the petrochemical industry will focus on lightening heavy oil. Residual oil is the heaviest fraction in crude oil. After crude oil is distilled, species with large molecular weight and complex structures are enriched in the residual oil. These impurities have an important impact on the subsequent processing and product properties. These impurities are removed. Compared with distillate oil, in addition to impurities such as sulfur and nitrogen, heavy oil also contains a higher proportion of metal impurities such as Ni and V, and has a higher asphal...

AI Technical Summary

Problems solved by technology

Among them, if metal impurities such as Ni and V are not effectively removed, they will have an adverse effect on the downstream catalyst, block the pores of the downstream catalyst, and cause the deactivation of the downstream catalyst.

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