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Method for preparing hydrogenation catalyst

A hydrogenation catalyst and hydrogenation activity technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of large loss of catalyst specific surface area, affecting the uniform distribution of active metals, affecting catalyst activity, etc. problems, to achieve the effect that is conducive to the play of metal activity, saves time and energy, and is easy to master

Active Publication Date: 2013-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned catalysts are roasted after the carrier is formed, and then impregnated with metal, so that the interaction between the metal and the carrier is strong, which affects the uniform distribution of the active metal, and the loss of the specific surface area of ​​the catalyst is large, which affects the activity of the catalyst.

Method used

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  • Method for preparing hydrogenation catalyst

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preparation example Construction

[0019] The preparation method of the hydrogenation catalyst of the present invention, the preparation method of the present invention is specifically described by taking the following catalyst as an example, with silicon oxide and aluminum oxide as the carrier, molybdenum and nickel as the hydrogenation active metal component, and phosphorus as the auxiliary agent, specifically as follows:

[0020] (1) Add macroporous aluminum hydroxide, small pore aluminum hydroxide and extrusion aid to the premixer and mix evenly, then add nano-silicon-containing compound, preferably nano-silicon dioxide, and peptizer aqueous solution to knead to form a plastic body, and shape it;

[0021] (2) drying the molded product obtained in step (1) at 100-280°C for 4-24 hours, preferably at 150-250°C for 4-24 hours;

[0022] (3) Prepare a molybdenum-nickel-phosphorus impregnation solution, then use the impregnation solution to impregnate the dried product obtained in step (2), then dry it at 90-150°C ...

Embodiment 1

[0030] In Comparative Example 1, the step of roasting the carrier at 550° C. for 4 hours under air flow was canceled, and the clover strips were dried at 110° C. for 4 hours instead of at 180° C. for 4 hours, and the rest were the same. Catalyst C1

Embodiment 2

[0034] In Comparative Example 2, the step of roasting the carrier at 600°C for 4 hours under air flow was canceled, the clover strips were dried at 120°C for 4 hours, and dried at 230°C for 5 hours, and the rest were the same. Catalyst C2 is obtained.

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Abstract

The invention discloses a method for preparing a hydrogenation catalyst. According to the method, a refractory inorganic oxide precursor is kneaded, molded and dried, and then is impregnated with an impregnating liquid containing hydrogenation active metal to obtain the hydrogenation catalyst. Compared with the conventional impregnation method, the method has the advantages that: the molded carrier does not need to be roasted, the preparation process is simplified, the time and energy are saved, the strong interaction between the active metal and the carrier is also reduced, the uniform distribution of the metal is favorable, the activity of the metal is more favorable, and the loss of specific surface area caused by multi-step roasting is also avoided. The method is particularly suitable for preparing a heavy distillate hydrotreating catalyst, and the catalyst has good hydrogenation performances.

Description

technical field [0001] The invention relates to a preparation method of a petroleum hydrocarbon hydrogenation catalyst, especially a heavy distillate hydrogenation treatment catalyst and a preparation method thereof. Background technique [0002] The preparation technology of hydrogenation catalysts is mainly improved around increasing the pore volume and specific surface, making the pore size distribution more concentrated, improving the interaction between the metal and the support, making the metal dispersion more uniform, and improving the acid strength distribution. [0003] The most commonly used preparation method for hydrogenation catalysts is the impregnation method, which is to load the active metal components on the calcined carrier. US4,568,449 and US4,446,248 introduced supported hydrogenation catalysts with nickel, molybdenum, and phosphorus as active components. The carrier was formed by molding hydrated alumina powder, dried and calcined at 500-680°C to make ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/02B01J27/19C10G45/08
Inventor 姜虹杨占林王继锋唐兆吉魏登凌温德荣
Owner CHINA PETROLEUM & CHEM CORP
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