A kind of preparation method of hydrogenation catalyst

Abstract

The invention discloses a hydrogenation catalyst, and a preparation method thereof. The preparation method comprises following steps: pseudo-boehmite with a dry basis content below 55%, preferably ranges from 40% to 50%, is mixed with a salt solution containing high-concentration active metals, and an obtained material is kneaded uniformly so as to obtain a plastomer; the plastomer is subjected to moulding, is dried for 1 to 5h at a temperature of 80 to 120 DEG C, and is roasted for 1 to 6h at a temperature of 300 to 800 DEG C. Preparation processes of the preparation method are simple; cost is low; the preparation method is safe and friendly to the environment; and the hydrogenation catalyst is suitable to be used as a heavy oil hydrotreating catalyst.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst, in particular to a method for preparing a high-activity heavy oil hydrogenation catalyst by a kneading method. Background technique [0002] As the world's crude oil gradually becomes heavier and worse, and the market demand for light oil products, especially high-quality clean light oil products, grows rapidly, hydrogenation technology has received special attention worldwide. For example, hydrorefining of various light distillate oils, hydrotreating of heavy oils, etc. [0003] Heavy oil (such as atmospheric residue of crude oil, vacuum residue of crude oil, heavy crude oil, oil sands, synthetic heavy oil products, etc.) contains a large amount of heavy metals (such as nickel, vanadium), sulfur, nitrogen and other impurities, and The content of colloids and asphaltenes is relatively high. In order to meet the requirements of catalytic cracking feed and protect downstream catal...

AI Technical Summary

Problems solved by technology

Since the metal is added to the alumina powder in the form of metal salt powder, it is easy to cause uneven distribution of active metal components and the strength of the catalyst is relatively poor

[0008] In short, there are mainly the following problems in the above-mentioned prior art. Although the cost of the catalyst can be reduced when the catalyst is prepared by the kneading method, the pore volume and pore distribution of the catalyst and the dispersion of the active components will be affected to a certain extent (compared to the impregnation method), Affect the performance of the catalyst