Preparation method of hydrodemetallization catalyst

Abstract

The invention discloses a hydrogenation and metal removing catalyst preparation method, which comprises: (1) impregnating a physical pore expanding agent by using a silicon-containing solution, carrying out mixing kneading on the physical pore expanding agent, pseudo-boehmite, an auxiliary extrusion agent and a glue solvent after the impregnating to form a plastic body, extruding strips, drying, calcining the dried material in a nitrogen atmosphere, and then calcining in an air atmosphere to produce a silica-containing alumina carrier; and (2) impregnating the carrier by using a hydrogenation activity component impregnating liquid, drying the material, and calcining to prepare the hydrogenation and metal removing catalyst. According to the present invention, the catalyst prepared through the method has advantages of high mechanical strength, suitable pore structure, high catalytic activity, and high activity stability.

Description

technical field

[0001] The invention relates to a preparation method of a hydrodemetallization catalyst. Background technique

[0002] With the increasing requirements for deep processing of raw materials worldwide, the main energy structure is gradually developing in the direction of macromolecules and high carbon, especially for my country where crude oil is generally heavy. In order to effectively solve the problems of excessive diffusion resistance of heavy oil components in the catalyst pores, heavy metal impurity deposition and coking caused by catalyst activity decline or deactivation, it is urgently required that the alumina carrier widely used in the petrochemical industry has a large pore volume and The characteristic of large aperture. The large pore size is conducive to the diffusion of macromolecular compounds into the catalyst particles, and the large pore volume is conducive to improving the ability to accommodate metals or coke.

[0003] US4448896 discloses...

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