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Catalytic cracking catalyst and its preparation

A catalytic cracking and catalyst technology, used in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of cracks and poor wear resistance of catalysts

Active Publication Date: 2008-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved in the present invention is to overcome the problems of cracks and poor wear resistance of existing catalysts after aging, and provide a new catalyst and its preparation method

Method used

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  • Catalytic cracking catalyst and its preparation

Examples

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example 1

[0038] This example illustrates the preparation of catalysts according to the methods provided by the present invention.

[0039] Under stirring, 3.57 kilograms of deionized water are added in the beating tank, followed by adding 2.86 kilograms of kaolin (the product of Suzhou Kaolin Company, with a solid content of 84% by weight), and 1.36 kilograms of aluminum sol (produced by Qilu Catalyst Factory, with an alumina content of 22% by weight) ), 1.41 kilograms of pseudo-boehmite (produced by Shandong Aluminum Factory, with an alumina content of 64% by weight), 0.65 kilograms of fibrous γ-alumina (preparation method: the concentration is 0.1mol / L aluminum nitrate solution, which contains The polyethylene glycol 6000 of aluminum mass fraction 7%, the concentration is the ammonium bicarbonate solution of 0.8mol / L, n (HCO3 - ) / n (Al 3+ ) = 0.68, co-current precipitation, precipitation aged at room temperature for 24 hours, filtered and dried, then calcined at a temperature ...

example 2

[0041] This example illustrates the preparation of catalysts according to the methods provided by the present invention.

[0042] The catalyst is prepared according to the method of Example 1, except that 0.67 kg of fibrous anatase titanium oxide (produced by Shanghai Yuejiang Titanium White Chemical Products Co., Ltd., titanium oxide content of 89% by weight, fiber length of 30nm, and diameter of 5nm) is used instead Fibrous γ-alumina. Catalyst A2 was obtained, and its physical properties are shown in Table 1.

example 3

[0044] This example illustrates the preparation of catalysts according to the methods provided by the present invention.

[0045] Prepare the catalyst by the method of Example 1, the difference is that 0.68 kg of fibrous magnesia (produced by Shijiazhuang Longli Zinc Industry Co., Ltd., magnesia content 96% by weight, fiber length 3 μm, diameter 20nm) replaces fibrous γ-oxidation aluminum. Catalyst A3 was obtained, and its physical properties are shown in Table 1.

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Abstract

The invention relates to a preparation method of catalytic cracking catalyst, which comprises a step of mixing a matrix, a molecular sieve with water for beating. The invention is characterized in that the matrix includes at least one component having a fibrous structure and taking the weight of the solid in the slurry as reference, the content of the matrix in the slurry is 40 to 95 percent by weight, and the content of the molecular sieve is 5 to 60 percent by weight, wherein, the content of the component having a fibrous structure is 1 to 50 percent by weight. The catalytic prepared by themethod has less surface crack, high strength and strong anti-Ni pollution capability.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst and a preparation method thereof. Background technique [0002] In the process of catalytic cracking, there are collisions and mechanical friction between the catalysts, between the catalyst and the wall or components, resulting in the pulverization of the catalyst particles, which requires the catalyst to have good wear resistance. Due to the different preparation methods of catalytic cracking catalysts, the sphericity and anti-wear properties of the catalysts vary greatly; and during the high-temperature reaction-regeneration process, different points of the catalyst particles are subjected to different stresses, resulting in cracks on the catalyst surface and easy wear of the catalyst. [0003] CN 1098130A discloses a method for preparing a cracking catalyst. The method uses a double aluminum-based binder, wherein aluminum sol is used to improve the strength of the catalyst, and pseudo-boehmite ...

Claims

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Application Information

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IPC IPC(8): B01J29/06B01J21/04B01J21/16B01J21/10
Inventor 潘晖华何鸣元宋家庆田辉平朱玉霞
Owner CHINA PETROLEUM & CHEM CORP
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