Method for preparing catalytic cracking catalyst

A catalytic cracking, catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of aluminum binder fluctuations, catalyst strength and pore volume fluctuations, etc. The effect of uniform and thorough dissolution and re-dispersion process, stable pore volume and wear resistance strength

Active Publication Date: 2010-01-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a new method for preparing cracking catalysts for the problem that the fluctuation of the aluminum binder leads to the fluctuation of the strength and pore volume of the prepared catalyst

Method used

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preparation example Construction

[0015] The catalyst preparation method provided by the present invention may also include the step of introducing a substrate commonly used in cracking catalysts, such as one or more of clay, aluminum sol, rare earth and inorganic oxides. The clay is one or more of kaolin, halloysite, montmorillonite, diatomite, halloysite, saponite, retortite, sepiolite, attapulgite, hydrotalcite, and bentonite; One or more of the above-mentioned inorganic oxides such as silicon oxide, aluminum oxide, silicon oxide-alumina, titanium oxide, and zirconium oxide. At what step can the matrix be introduced, for example, when clay is introduced, it can be introduced during the process of mixing the aluminum binder with acid and beating. The preparation method includes: mixing clay and deionized water for beating, and the beating time is preferably 10- 60 minutes, more preferably 20-40 minutes, then add aluminum binder, beating for 10-30 minutes, then acidify; you can also add alkali to increase the...

example 1

[0022] 8.64Kg pseudo-boehmite N-1 (industrial product of Shandong Aluminum Plant, solid content 63% by weight) was beaten with 40Kg of decationized water, and the pH value of the slurry was adjusted to 3 with hydrochloric acid (industrial grade, 31% by weight). Then beating for 20 minutes; then add industrial ammonia (mass concentration 25%) under stirring to make the pH value of the slurry 8.5, beating for 20 minutes; then use the above-mentioned hydrochloric acid to adjust the pH value of the slurry to 3, beating for 20 minutes; then add 44.44 Kg hallowed kaolin (industrial product of Suzhou porcelain clay company, solid content 45m%), beat for 15 minutes, add water 25kg, then add ZSM-5 molecular sieve slurry 16.0kg (molecular sieve content is 37.97% by weight in the slurry) and REY molecular sieve (dry basis) 7.0kg stirred for 15 minutes, then added 7.5Kg aluminum sol (commercial product obtained by Qilu catalyst branch company, aluminum oxide content 20% by weight), 1Kg com...

example 2

[0025] 8.64Kg pseudo-boehmite N-2 (industrial product of Shandong Aluminum Factory, solid content 57% by weight) is beaten with 40Kg of decationized water, its pH is adjusted to 3.5 with hydrochloric acid (technical grade, 31% by weight), and then beaten 20 minutes; then add 4.0Kg of industrial ammonia (mass concentration 25%) to make its pH value 8, beating for 20 minutes. Then use hydrochloric acid to adjust the slurry pH to 3.5, beat for 20 minutes, add 44.44Kg polyhydrate kaolin (industrial product of Suzhou China Clay Company, solid content 45m%), beat for 15 minutes, add water 25kg, then add ZSM-5 molecular sieve slurry 16.0kg ( Slurry concentration is 37.97% by weight) and REY molecular sieve (dry basis) 7.0kg, stirred for 15 minutes, then added 7.5Kg aluminum sol (commercial product obtained by Qilu Catalyst Branch Company, aluminum oxide content 20% by weight), 1Kg composite Rare earth solution (concentration is 300g / kg, La accounts for 65%, Ce accounts for 35%), stir...

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Abstract

The invention discloses a method for preparing a catalytic cracking catalyst, which comprises steps of mixing and pulping aluminum binder and acid. The method is characterized by also comprising steps of adding alkali into slurry to improve the pH value of the slurry, and then adding the acid into the slurry to reduce the pH value of the slurry. The method can stabilize the quality of the prepared catalyst.

Description

technical field [0001] The invention relates to a preparation method of catalytic cracking catalyst. Background technique [0002] In recent years, catalytic cracking raw materials have become increasingly heavy and inferior. In order to obtain high value-added products and improve the economic benefits of refineries, it is necessary to further improve the performance of existing catalytic cracking catalysts. Improvements are increasingly valued. The catalyst matrix can not only precrack heavy oil macromolecules and accommodate metal pollutants, but also play a key role in catalyst shaping and physical and chemical properties. [0003] Aluminum binder is a commonly used binder for catalytic cracking catalysts. Semi-synthetic matrix catalytic cracking catalysts with aluminum sol and peptized pseudoboehmite as binders have the characteristics of good strength and strong heavy oil cracking ability. Pseudo-boehmite refers to hydrated alumina containing one to two water molecul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/02B01J29/80
Inventor 田辉平刘宇键赵留周许昀唐立文王振波任飞
Owner CHINA PETROLEUM & CHEM CORP
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