Hydrocracking after-treatment catalyst and preparing method thereof

Abstract

The invention discloses a processing catalyzer after hydrogenated cracking and preparing method, adopting alumina as carrier, Mo and / or Wu as well as Ni and Co as active components, and P as catalyst promoting component. Firstly, it carries a part of Ni on the carrier by mixed kneading, and then uses Ni-Mo-Co-P mixed solution for dipping to make the catalyzer. It has higher NiO content, higher Ni / Ni+Mo atomic ratio, especially applied to processing the course of producing low-mercaptan product after hydrogenated cracking.

Description

technical field

[0001] The invention relates to a hydroprocessing catalyst and a preparation method thereof, in particular to a hydrocracking post-treatment catalyst and a preparation method thereof. Background technique

[0002] Hydrocracking is a petroleum refining process that breaks high-boiling hydrocarbons through C-C bonds to form small molecules and low-boiling target products. During the hydrocracking process, the raw material is cracked to produce a small amount of olefins and H in the system 2 S reacts to form thiols. Generally, too high a reaction temperature will be unfavorable for olefin saturation and more likely to form mercaptans. The presence of mercaptan in the product can not only cause the product to produce stench and reduce the quality and stability of the oil product, but also the mercaptan itself is corrosive. With the increase of high-sulfur crude oil refining volume and the strengthening of environmental protection regulations, the problem of me...