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Hydrocracking catalyst, and preparation method and application thereof

A hydrocracking and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of high reaction temperature, low activity, poor raw material adaptability, etc., to achieve lower reaction temperature, strong acid Effect of reducing and improving nitrogen resistance performance

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this catalyst can also be used as a medium-oil type hydrocracking catalyst, due to the characteristics of the β zeolite used, the content range of β zeolite in the medium-oil type catalyst is generally limited to 2.5w%-10w%, and generally must be used together A dispersed in γ-Al 2 o 3 Such as silica-alumina on a macroporous alumina substrate, the medium-oil catalyst involved in this patent has to lower the activity in order to ensure the selectivity of medium-oil, so that the reaction temperature is relatively high, generally above 390 ° C, which leads to poor raw material adaptability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The carrier T-1 of Comparative Example 1 was impregnated with an impregnation solution containing tungsten compound and nickel compound for 2 hours at room temperature, and dried at 120°C for 4 hours to prepare dimethylhydrazine NH with a concentration of 30% by weight. 2 N(CH 3 ) 2 solution, impregnate the above-mentioned dried carrier with the prepared solution for 2 hours, dry at 100°C for 4 hours, and then reductively activate the above-mentioned impregnated carrier under a hydrogen atmosphere. The reduction and activation procedure is 5°C / min from room temperature The catalyst C-1 of the present invention was prepared by raising the temperature to 500°C at a heating rate of 2°C / min and keeping the temperature at 500°C for 2 hours.

Embodiment 2

[0044] The carrier T-2 of Comparative Example 2 was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 2 hours, and dried at 100°C for 6 hours to prepare dimethylhydrazine NH with a concentration of 40% by weight. 2 N(CH 3 ) 2 Solution, impregnate the above-mentioned dried carrier with the prepared solution for 2 hours, dry at 100°C for 5 hours, and then activate the above-mentioned impregnated carrier under a hydrogen atmosphere, firstly, rise from room temperature at 10°C / min From 300°C to 600°C at a heating rate of 1°C / min to 300°C, and kept at 600°C for 4 hours to prepare catalyst C-2.

Embodiment 3

[0049] The carrier T-3 of Comparative Example 3 was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 2 hours, and dried at 110°C for 6 hours to prepare dimethylhydrazine NH with a concentration of 60% by weight. 2 N(CH 3 ) 2 Solution, impregnate the above-mentioned dried carrier with the prepared solution for 2 hours, dry at 110°C for 5 hours, and then perform activation treatment on the above-mentioned impregnated carrier under a hydrogen atmosphere. From 400°C to 500°C at a heating rate of 1°C / min to 400°C, and kept at 500°C for 4 hours to prepare catalyst C-3.

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Abstract

The invention discloses a hydrocracking catalyst, comprising an acidic component and active metal component compounds, wherein the acidic component at least includes a molecular sieve, the active metal component compounds comprise compounds of Mo and / or W and compounds of Ni and / or Co, Mo and W are group VI-B elements, and Ni and Co are group VIII elements. The hydrocracking catalyst is prepared through loading of active components, dipping with a hydrazine derivative, drying and hydrogen activation. A preparation method for the hydrocracking catalyst comprises the following steps: (1) preparing a molecular sieve and a porous inorganic refractory oxide carrier and carrying out molding; (2) loading the active metal component compounds on the carrier; (3) carrying out dipping with the hydrazine derivative and drying; and (4) carrying out hydrogen activation so as to obtain the finished catalyst. The catalyst has good comprehensive performance and good nitrogen resistance, is used for treating heavy hydrocarbon materials and can realize maximum production of intermediate distillate oil.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and its preparation method and application. The catalyst has excellent hydrocracking performance, high medium oil selectivity, and can produce more jet fuel and diesel oil. Background technique [0002] The hydrocracking catalyst is a dual-functional catalyst with hydrogenation and cracking properties. Non-precious metal hydrocracking catalysts generally use Group VIB and Group VIII metals as hydrogenation components, and the cracking performance is mainly provided by acidic components. Crystalline zeolite and / or amorphous silica-alumina can be used. Simple use of amorphous silica-alumina, although the selectivity is high, but the activity is low, and the flexibility of operation is limited. In most hydrocracking catalysts, crystalline zeolite is used as the acidic component, or crystalline zeolite and amorphous Silica and aluminum are common acidic components. [0003] Most of the medium-oil hydrocra...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J29/78C10G47/20C10G65/12
Inventor 姜虹杨占林唐兆吉王继锋温德荣魏登凌
Owner CHINA PETROLEUM & CHEM CORP
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