Preparation method for residual oil hydrogenation and demetalization catalyst

Abstract

The invention discloses a preparation method for a residual oil hydrogenation and demetalization catalyst. The preparation method comprises the following steps: dipping and molding an aluminum oxide carrier in an active metal component dipping solution containing polyhydric alcohols and / or saccharides, drying the dipped carrier, and then roasting the carrier under an inert gas atmosphere and an air atmosphere in sequence to prepare the hydrogenation and demetalization catalyst. The active components of the catalyst prepared by the method have weak interaction with the carrier and are likely to be completely vulcanized, so that the demetalization and desulfuration activities of the catalyst are obviously improved.

Description

Technical field [0001] The invention relates to a preparation method of a residue hydrodemetalization catalyst. Background technique [0002] At present, the most common hydrogenation catalysts are generally supported catalysts with alumina, silica, etc. as carriers and Co, Ni, Mo, W and other metals as active components. The activity of the catalyst is closely related to the dispersion of the active metal on the surface of the support and the interaction with the support. How to improve the dispersion of the active metal on the surface of the support and at the same time weaken the strong metal-support interaction becomes the key to improving the activity of the hydrogenation catalyst. The active components are usually loaded on the carrier by impregnation or kneading, and then dried and calcined to prepare the catalyst. During the calcination process, the active metal component easily interacts with the alumina carrier to form a strong MO-Al bond, causing the active component...

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Problems solved by technology

However, because the shaped support has not been roasted, the mechanical strength of the catalyst is not ideal

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