Preparation method of hydrocarbon hydrotreatment catalyst

Abstract

The invention relates to a preparation method for a catalyst to hydrotreat hydrocarbons, which comprises gama- Al2O3 as carrier, metal from VIB group and VIII group as active constituents, and Ti as active adjuvant. The prepraration method comprises: adding titanate solution to bring said Ti during the gelatinization for preparing aluminum hydroxide; adding basic solution contained Mo or W into the dried aluminum hydroxide powder, mixing till the powder wet fully by solution; adding acid solution contained Co or Ni, mixing till plastic, extruding to form, drying, baking, and obtaining the catalyst. This invention improves the catalyst property obviously.

Description

technical field [0001] The invention relates to a preparation method of a hydrocarbon hydrogenation treatment catalyst, in particular to a preparation method of a hydrocarbon hydrogenation desulfurization catalyst. 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 catalyst, such as US Patent 4,443,558, which uses a complete kneading method instead of the "impregnation method" or "mixed impregnation combi...

AI Technical Summary

Problems solved by technology

CN 1324687A discloses a method for preparing titanium-containing and silicon-containing aluminum hydroxide by adding finely ground metatitanic acid and silicon-containing compound solution by carbonization method. Although the environmental pollution is reduced, due to the addition of solid particles (although the particle size is less than 65 μm) in the When sodium metaaluminate solution reacts with carbon dioxide to form a gel, aggregates will be produced, which will affect the particle size of aluminum hydroxide, and the distribution of titanium and silicon in aluminum hydroxide will not be uniform, which will reduce its performance