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Catalytic cracking catalyst and preparation method thereof

A catalytic cracking and catalyst technology, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of specific surface area and pore volume reduction, high binder price, and influence on catalytic performance, etc. The effect of simple process

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the total amount of binder added exceeds 32%, other physical and chemical indicators of the catalytic cracking catalyst, such as specific surface area and pore volume, decrease significantly, which affects its catalytic performance; on the other hand, the price of binder is high, and excessive addition Amount of binder increases catalyst manufacturing cost

Method used

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Examples

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preparation example Construction

[0013] The invention provides a method for preparing a catalytic cracking catalyst, wherein the method comprises: premixing a cracking active component, clay and a binder into a jelly; homogeneously dispersing the jelly; and obtaining The dispersion is acidified and then molded.

[0014] According to the preparation method of the present invention, preferably homogeneously dispersed so that the cemented particle size D (V, 0.9) of the dispersion is below 12 μm, preferably below 10 μm, more preferably 3-10 μm. In this way, the wear index of the prepared catalytic cracking catalyst can be further reduced.

[0015] In the present invention, the cemented particle size D (V, 0.9) refers to the particle size value corresponding to when the percentage reaches 90% cumulatively from the minimum particle size, for example, D (V, 0.9) = 12, which means that the particle size is Particles below 12 microns account for 90% by volume of the total material.

[0016] According to the prepara...

Embodiment 1

[0036] According to Y-type molecular sieve (trade name DOSY, purchased from Catalyst Changling Branch): kaolin (trade name Suzhou soil, purchased from Suzhou soil Co., Ltd.): double aluminum binder (purchased from Changke Basin Co., Ltd., pseudo-thin The weight ratio of diaspore and alumina sol is 2.25:1) = 36:34:30, and the obtained jelly (D (V, 0.9) is 40 μm) is sent to the colloid mill disperser for dispersion. The dispersion conditions include: the temperature is 40°C, the time is 0.1h, and the obtained dispersion (D (V, 0.9) is 10 μm) is contacted with hydrochloric acid (concentration: 20% by weight) (the temperature is 45°C, the time is 60min) , wherein the ratio of dispersion material to hydrochloric acid is 70:1, and then the acidified material is spray-dried (conditions: spray pressure 10Mpa, spray tail gas temperature 160°C), roasted (calcined at 350°C), washed (in sequence Use 16% by weight of ammonium sulfate aqueous solution, 18% by weight of ammonia water and wat...

Embodiment 2

[0040]According to Y-type molecular sieve (trade name DOSY, purchased from Catalyst Changling Branch): kaolin (trade name Suzhou soil, purchased from Suzhou soil Co., Ltd.): double aluminum binder (purchased from Changke Basin Co., Ltd., pseudo-thin The weight ratio of diaspore and aluminum sol is 1.5:1) = 35:39:26, and the obtained jelly (D (V, 0.9) is 40 μm) is sent to the colloid mill disperser for dispersion. The dispersion conditions include: the temperature is 40°C, the time is 0.15h, and the obtained dispersion material (D (V, 0.9) is 7μm) is contacted with hydrochloric acid (concentration: 20% by weight) (the temperature is 45°C, the time is 60min) , wherein the ratio of dispersion material to hydrochloric acid is 70:1, and then the acidified material is spray-dried (conditions: spray pressure 10Mpa, spray tail gas temperature 160°C), roasted (calcined at 350°C), washed (sequentially Use 16% by weight of ammonium sulfate aqueous solution, 18% by weight of ammonia water...

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Abstract

The invention provides a preparation method of a catalytic cracking catalyst. The method comprises the following steps: premixing a cracking active component, clay and a binder into a gel; performing homogenous dispersion to the gel; acidifying the obtained dispersion materials, and then forming. The catalytic cracking catalyst is prepared by adopting the method. According to the method, the homogenous dispersion step is added, so that the catalytic cracking catalyst with low wear index can be obtained without addition of the amount of the binder; and the method is simple in technological process, and very suitable for industrial application.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst and a preparation method thereof. Background technique [0002] During the fluidized catalytic cracking (FCC) reaction process, the catalyst particles in a fluidized state need to continuously circulate between the reaction and regeneration devices, and friction between catalyst particles, particles and fluidized medium, and device side walls may Wear failure will cause wear and tear, which will increase the fine powder content of the FCC catalyst, and the fine powder will escape with the product oil and gas, resulting in catalyst loss, which will lead to product pollution and increased catalyst consumption costs, and will cause deterioration of the fluidization quality of the system, affecting normal operation of the device. With the deterioration of FCC raw oil and the development of high fluidized gas velocity riser catalytic cracking technology, higher requirements are put forward for the stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08
Inventor 杨柳李育元符荣华徐奇周平李军甘孝勇
Owner CHINA PETROLEUM & CHEM CORP
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