A kind of preparation method of demetallization catalyst

A catalyst and demetallization technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problem that the pore volume of the catalyst needs to be further improved, so as to facilitate mass transfer and diffusion, reduce production costs, and reduce environmental pollution
CN111821994BActive Publication Date: 2022-06-07CHINA 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
2022-06-07

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Abstract

The invention discloses a preparation method of a demetallization catalyst, which comprises the following contents: (1) crushing the waste hydrogenation treatment catalyst, and then roasting; (2) immersing the material obtained in step (1) into an aqueous solution of ammonium bicarbonate and sealing Heat treatment, filtration, and drying of the material, then soaking in polyethylene glycol solution, filtering, and drying to obtain pretreatment material A; (3) kneading pseudo-boehmite and pretreatment material A to form, and drying and roasting Finally, a carrier is obtained, and the hydrogenation active component is loaded on the carrier to obtain a demetallization catalyst. The method utilizes waste catalysts to prepare hydrodemetallization catalysts, which reduces production costs and reduces environmental pollution. The hydrodemetallization catalysts not only ensure the activity of the catalysts, but also make the catalysts have good stability, which can prolong the operation period of the device. .
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Description

Technical field

[0001] The present invention relates to the field of catalyst preparation, specifically to a method for preparing a hydrodemetallic catalyst. Background

[0002] With the intensification of crude oil inferiority and heavy quality, 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. Residual oil fixed bed hydrogenation technology is an effective means to achieve efficient conversion of heavy oil. The use of this technology route can effectively remove impurities such as metals, sulfur, nitrogen and residual carbon in the residual oil, providing high-quality feed materials for catalytic cracking, and meeting stricter environmental regulations while increasing the production of light oils. In the process of heavy oil processing, the metal compounds in it will decompose, and the metal impurities will be deposited on the inner and outer surfaces of the cat...

Claims

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