Heavy-petroleum hydrogenating deasphaltenizing catalyst and preparation and application thereof

Abstract

The invention provides a hydrogenating deasphaltenizing catalyst and preparation and application thereof. The hydrogenating deasphaltenizing catalyst comprises a supporter and a hydrogenating active metallic compound, wherein the supporter is a doublet-hole alumina supporter which has the pore volume of 0.9 to 1.2ml/g and specific surface area of 50 to 300m<2>/g under the representation in a mercury intrusion method, and the pore volume of a hole being 10 to 30nm in diameter accounts for 55 to 80% of the total pore volume, and the pore volume of a hole being 300 to 500nm in diameter accounts for 10 to 35% of the total pore volume. The preparation method of the supporter comprises the following steps of: mixing, molding, drying and roasting hydrated alumina P1 containing pseudo-boehmite and a modifying substance P2 of the P1, wherein the mixing ratio in weight of the P1 to P2 is (20-95): (5-80; ); the k value of P2 ranges from 0 to 0.9, and the k is DI2/DI1, wherein DI1 represents the acid peptizing index of the hydrated alumina P1 containing the pseudo-boehmite; and DI2 represents the acid peptizing index of the modifying substance P2 of the P1. Compared with the prior art, the catalyst provided by the invention shows greater performance on hydrogenating deasphaltenizing and demetalizing after being applied to hydroprocessing of residual oil.

Description

technical field [0001] The invention relates to a hydrogenation deasphaltene catalyst and its preparation and application. Background technique [0002] The deep processing of heavy oil including residual oil is not only conducive to improving the utilization rate of crude oil and alleviating the tense trend of energy supply, but also reducing environmental pollution and achieving clean utilization of energy. Compared with distillate oil, heavy oil contains a large number of macromolecular reactants such as asphaltenes and colloids, while heteroatom compounds such as sulfur, nitrogen, and oxygen in heavy oil have a large Some of them are concentrated in asphaltenes, and these impurities and heavy metals will pollute the corresponding catalysts in the subsequent processing. Therefore, the hydroconversion of asphaltenes is a key step in the hydrogenation process of residual oil. In the process of converting and removing asphaltene, it is necessary to select a catalyst with hi...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of existing heavy oil hydrogenation catalysts is that their S, N removal rates, heavy metal removal rates and asphaltenes removal rates cannot be well matched. For exampl

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