Dual-porous alumina carrier, demetallization catalyst and preparation method thereof

A technology of alumina carrier and double pores, which is applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problem of lower carrier utilization and reaction molecules staying in pores Short time in the channel, large pore size, etc., to achieve the effects of improving permeability, facilitating mass transfer and diffusion, and high metal capacity
CN109718747BActive Publication Date: 2021-10-08CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-10-08

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Abstract

The invention discloses a double hole alumina carrier, a hydrogenation demetallization catalyst and a preparation method thereof. The double-porous alumina carrier contains rod-shaped alumina clusters, and the rod-shaped alumina clusters are formed by the disordered interlacing of rod-shaped alumina. The preparation method of the dual-porous alumina carrier comprises: roasting pseudo-boehmite A to obtain alumina; immersing the alumina in an aqueous solution of ammonium bicarbonate for sealing and heat treatment, drying, and immersing in polyethylene glycol solution. The material is dried to obtain rod-shaped alumina clusters; then the pseudo-boehmite B is kneaded with the rod-shaped alumina clusters obtained above to form, and the molded product is dried and calcined to obtain a double-porous alumina carrier. The double hole alumina support prepared by the method has higher pore volume and unique double hole distribution. The hydrodemetallization catalyst prepared by the carrier not only ensures the activity of the catalyst, but also makes the catalyst have good stability.
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Description

technical field

[0001] The present invention relates to an alumina carrier, a catalyst containing the carrier and a preparation method thereof, in particular to a double-porous alumina carrier, a hydrodemetallization catalyst and a preparation method thereof, the catalyst is particularly suitable for preparing residual oil in the hydrogen treatment process. Background technique

[0002] With the intensification of crude oil deterioration and heaviness, the efficient conversion of heavy oil and the improvement of the yield of light oil products have become an important trend in the development of refining technology. The fixed bed hydrogenation technology of residual oil is an effective means to realize the efficient conversion of heavy oil. Adopting this technical route can effectively remove impurities such as metals, sulfur, nitrogen and residual carbon in residual oil, provide high-quality feed for catalytic cracking, and meet stricter environmental protection regulation...

Claims

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