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High-activity hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the field of high activity hydrocracking catalyst and its preparation, can solve the problems of high reaction temperature, low activity, poor raw material adaptability, etc.

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

[0029] Prepared dimethylhydrazine NH 2 N(CH 3 ) 2 And tungsten and nickel impregnation solution, dimethyl hydrazine NH in the impregnation solution 2 N(CH 3 ) 2 The weight concentration was 30%. The carrier T-1 of Comparative Example 1 was immersed in the prepared impregnating solution for 2 hours, dried at 120°C for 4 hours, and then reduced and activated in a hydrogen atmosphere. The reduction and activation procedure was 5°C / min from The catalyst C-1 of the present invention was prepared by raising the temperature from room temperature to 450°C, from 450°C to 700°C at a heating rate of 2°C / min, and keeping the temperature at 700°C for 2 hours.

Embodiment 2

[0034] Prepared dimethylhydrazine NH 2 N(CH 3 ) 2 And tungsten and nickel impregnation solution, dimethyl hydrazine NH in the impregnation solution 2 N(CH 3 ) 2 The weight concentration is 40%. The carrier T-2 of Comparative Example 2 is immersed in the prepared impregnation solution for 2 hours, dried at 100°C for 6 hours, and then activated by hydrogen in a hydrogen atmosphere. First, it is raised from room temperature at 10°C / min. To 350°C, the temperature was raised from 350°C to 600°C at a rate of 1°C / min, and kept at 600°C for 4 hours to prepare catalyst C-2.

Embodiment 3

[0039] Prepared dimethylhydrazine NH 2 N(CH 3 ) 2 And tungsten and nickel impregnation solution, dimethyl hydrazine NH in the impregnation solution 2 N(CH 3 ) 2 The weight concentration was 40%. The carrier T-3 of Comparative Example 3 was immersed in the prepared impregnation solution for 2 hours, dried at 110°C for 6 hours, and then activated under a hydrogen atmosphere. Raise the temperature to 450°C at a rate of 1°C / min, from 450°C to 650°C, and keep the temperature at 650°C for 4 hours to prepare catalyst C-3.

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Abstract

The present invention discloses a preparation method of a hydrocracking catalyst. The method of the present invention includes the following steps: (1) preparing a catalyst carrier containing a molecular sieve and an inorganic refractory oxide; (2) preparing a dipping solution containing a VIB group metallic compound, a VIII group metallic compound and a hydrazine derivative, (3)dipping the catalyst carrier obtained in the step (1) in the dipping solution obtained in the step (2), and then drying the carrier; and (4) activating the materials obtained in the step (3) by using hydrogen, so as to obtain the hydrocracking catalyst used for the hydrocracking reaction after the activation. The hydrocracking catalyst provided by the invention has high activity, and the preparation method is simple, can be used for the treatment of heavy hydrocarbon materials and can produce middle distillates by the maximum amount.

Description

technical field [0001] The invention relates to a high-activity hydrocracking catalyst and a preparation method thereof. The catalyst has excellent hydrocracking performance, high activity and high selectivity for middle 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 hydrocracking catalysts curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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