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A kind of hydrocracking catalyst and its preparation method and application

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low activity, poor raw material adaptability, and high reaction temperature

Active Publication Date: 2016-03-02
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

[0031] The prepared weight concentration is 30% dimethyl hydrazine NH 2 N(CH 3 ) 2 and the impregnation solution of tungsten and nickel. The carrier T-1 of Comparative Example 1 was impregnated with the prepared impregnation solution for 2 hours, dried at 120°C for 4 hours, heat-treated at 250°C for 6 hours in an air atmosphere, and then heated under a hydrogen atmosphere. Reduction activation, the reduction activation procedure is to rise from room temperature to 450°C at 5°C / min, from 450°C to 700°C at a heating rate of 2°C / min, and keep the temperature at 700°C for 2 hours to prepare the catalyst of the present invention C-1.

Embodiment 2

[0036] The prepared weight concentration is 40% dimethyl hydrazine NH 2 N(CH 3 ) 2 and an impregnation solution containing tungsten and nickel, the carrier T-2 of Comparative Example 2 was impregnated with the prepared impregnation solution for 2 hours, dried at 100°C for 6 hours, heat-treated at 400°C for 1 hour in an air atmosphere, and then heated in a hydrogen atmosphere Under the condition of hydrogen activation, the first step is to raise the temperature from room temperature to 350°C at 10°C / min, then from 350°C to 600°C at a rate of 1°C / min, and keep the temperature at 600°C for 4 hours to prepare a phosphating transition Metal Catalyst C-2.

Embodiment 3

[0041] The prepared weight concentration is 40% dimethyl hydrazine NH 2 N(CH 3 ) 2 and an impregnation solution containing tungsten and nickel, the carrier T-3 of Comparative Example 3 was impregnated with the prepared impregnation solution for 2 hours, dried at 110°C for 6 hours, heat-treated at 350°C for 2 hours in an air atmosphere, and then heated in a hydrogen atmosphere Activation treatment is carried out at 8°C / min from room temperature to 450°C, then at a rate of 1°C / min, from 450°C to 650°C, and kept at 650°C for 4 hours to prepare a phosphating transition Metal Catalyst C-3.

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Abstract

The invention discloses a hydrocracking catalyst. In terms of the weight of a catalyst carrier, the content of a molecular sieve is normally 2 to 45%, preferably, 4 to 15%; in terms of the weight of the catalyst, the content of a group VI-B metal component (in terms of the oxide of W and / or Mo) is normally 10 to 40%, preferably, 15 to 35%, most preferably, 18 to 28%, the content of a group VIII metal component (in terms of the oxide of Ni and / or Co) is normally 1 to 10%, preferably, 2 to 9%, most preferably, 4 to 8%, and the content of elemental nitrogen is 1 to 1.5%, preferably, 1.2 to 1.4%. The hydrocracking catalyst provided by the invention 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 activity and high medium oil selectivity. 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 currently us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16B01J29/78C10G47/20C10G65/12
Inventor 谷明镝卜岩曹春清王刚白振民黄薇
Owner CHINA PETROLEUM & CHEM CORP
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