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A kind of hydrogenation pretreatment catalyst and its preparation method and application

A hydrogenation pretreatment and catalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of catalyst pore structure performance degradation, etc., to avoid local coking, reduce migration, increase The effect of surface hydrophobicity

Active Publication Date: 2022-03-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pore volume and specific surface area of ​​titanium dioxide are small, and a large amount of this component is introduced into the carrier to reduce the pore structure performance of the catalyst. It is not suitable for the treatment of coal tar components containing macromolecular aromatics, colloids and asphaltenes.

Method used

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  • A kind of hydrogenation pretreatment catalyst and its preparation method and application
  • A kind of hydrogenation pretreatment catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh the powder according to the fact that the alumina powder a accounts for 30% of the total alumina weight. Calculating that magnesium oxide accounts for 4% of the weight of alumina powder a, weigh magnesium citrate to prepare an aqueous solution, and impregnate alumina powder a in equal volume; calculate that phosphorus accounts for 3.5% of the weight of alumina powder b, weigh ten The octaalkyl phosphate is configured into an aqueous solution, and an equal volume of alumina powder b is impregnated. The alumina powder loaded with additives was dried at 90°C for 18 hours. The alumina powder modified by the two additives was mixed with 2.3% of citric acid and 3.6% of the weight of the alumina, and then added to the acidic solution. The concentration of nitric acid in the acidic solution was 2.3wt%, and the rest was distilled water. Mix in a kneader for 15 minutes to form a plastic body and extrude into 1.7mm clover strips. The molding material was dried at 110° C. f...

Embodiment 2

[0046] Weigh the powder according to the alumina powder a accounting for 43% of the total alumina weight. Other subsequent steps were the same as in Example 1 to obtain catalyst Cat-2.

Embodiment 3

[0048] Weigh the powder according to the fact that the alumina powder a accounts for 60% of the total alumina weight. Other subsequent steps were the same as in Example 1 to obtain catalyst Cat-3.

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Abstract

The invention discloses a hydrogenation pretreatment catalyst and its preparation method and application. The method comprises the following steps: (1) a magnesium-containing compound solution is loaded on alumina powder a, and dried; (2) a phosphorus-containing compound solution Loaded to the alumina powder b and dried; (3) The alumina powder after the drying treatment in steps (1) and (2) is formed, dried, and roasted to obtain a catalyst carrier; (4) The active metal is loaded on The carrier obtained in step (3) is dried and calcined to obtain the final hydrogenation pretreatment catalyst. The catalyst prepared by the method has a suitable pore size, concentrated distribution, excellent stability and strong raw material adaptability. The catalyst can be used for oxygen content Hydrogenation pretreatment process of low-quality hydrocarbon feedstocks with high nitrogen content and high aromatics content.

Description

technical field [0001] The invention relates to a hydrogenation pretreatment catalyst and its preparation method and application, in particular to a hydrocarbon raw material with the characteristics of high oxygen content, high nitrogen content and high aromatic hydrocarbon content, which has good anti-coking performance and hydrothermal Properties of Hydroprocessing Catalyst Preparation Method. Background technique [0002] With the rapid development of my country's economy, the demand for fuel oil and chemical raw materials continues to increase, and the amount of crude oil processed every year continues to rise. At present, most of my country's processed crude oil depends on foreign crude oil imports. With the increase of crude oil extraction, the quality of crude oil at home and abroad is gradually deteriorating, and the trend of heavy quality is becoming more and more obvious. In order to meet the requirements of environmental protection and maximize the use of existi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/188B01J35/10B01J23/888B01J37/02B01J37/08C10G45/08
CPCB01J27/188B01J23/888B01J37/0201B01J37/0203B01J37/082B01J37/0018C10G45/08C10G2300/202B01J35/633B01J35/615
Inventor 王会刚杨占林姜虹刘奕丁思佳王继锋
Owner CHINA PETROLEUM & CHEM CORP
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