Heavy, residual oil hydrogenating catalyst and its preparation

Abstract

The invention relates to a catalyst of hydrodesulfurization of heavy oil and residual oil and its preparing method. The catalyst takes gama-Al2O3 as its carrier, with VIB family and VIII family metals as active components, and with Ti etc. as active assistants. The catalyst assistants Ti of the invention is drawn into by ultrasonic wave in aluminum hydrate gelatinization. The catalyst is prepared by complete mixed kneading method, i.e., adding alkaline solution containing Mo and / or W into aluminum hydrate dry gel powder of Ti drawn by ultrasonic wave to intensively mix until aluminum hydrate powder is wetted by alkaline solution completely, re-adding acid solution containing Co and / or Ni to be mixed until materials become plastic body, extrusion molding, drying, and roasting to get catalyst. Distribution of the catalyst assistants Ti prepared by the method is of more uniform, having pore capacity and specific area improved apparently with excellent performance in use.

Description

technical field [0001] The invention relates to a catalyst for hydrogenation of hydrocarbons and its preparation method, in particular to a catalyst for hydrogenation and hydrogenation of heavy and residual oil and its preparation method, especially to a catalyst for hydrogenation and desulfurization of heavy and residual oil and its preparation method. Background technique [0002] Hydroprocessing is an important process technology in hydrocarbon processing, mainly including hydrodesulfurization, hydrodenitrogenation, hydrocracking, etc. The key to hydroprocessing technology lies in the catalyst. At present, most catalysts for hydrocarbon hydroprocessing are alumina The carrier uses Mo and / or W and Ni and / or Co as active components. In order to achieve maximum economic benefit, improving catalyst performance and reducing cost are the goals pursued in this field. [0003] Generally, simplifying the catalyst preparation process can greatly reduce the production cost of the c...

AI Technical Summary

Problems solved by technology

U.S. Patent No. 5,089,453 introduces Ti as a promoter in the hydrodesulfurization catalyst to improve the activity of the catalyst. However, the catalyst also uses the method of adding acid first and then neutralizing it with alkali, which leads to a large reduction in the pore volume and specific surface of the final catalyst. , which ultimately affects the performance of the catalyst

EP 0339640 discloses a method for preparing titanium-containing alumina by co-precipitation, but the co-precipitation method has the problem of bulk phase retention, so that the promotion effect of TiO2 on catalyst performance cannot be fully exerted