Method for preparing catalytic cracking catalyst

A catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of catalyst strength and pore volume fluctuations, aluminum binder fluctuations, etc., and achieve uniform and thorough peptization and redispersion process , Increased particle order and stable quality

Active Publication Date: 2012-12-12
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 further 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 oxide. The clay is one or more of kaolin, halloysite, montmorillonite, diatomaceous earth, halloysite, saponite, rectorite, sepiolite, attapulgite, hydrotalcite, and bentonite; The inorganic oxide is one or more of silicon oxide, aluminum oxide, silicon oxide-alumina, titanium oxide, and zirconium oxide. In what step the matrix can be introduced, for example, when the clay is introduced, it can be introduced during the mixing and beating process of the aluminum binder and acid. The preparation method includes: mixing and beating the clay and deionized water, and the beating time is preferably 10- 60 minutes, more preferably 20-40 minutes, then add aluminum binder, beating for 10-30 minutes, then add acid to acidify; you can also add alkali to incr...

example 1

[0022] 8.64Kg pseudo-boehmite N-1 (industrial product of Shandong Aluminum Factory, 63% by weight) was beaten with 40Kg decationized water, and the pH value of the slurry was adjusted to 3 with hydrochloric acid (industrial grade, 31% by weight), Beat the slurry for another 20 minutes; then add industrial ammonia (mass concentration 25%) with stirring to make the slurry pH 8.5, beat the slurry for 20 minutes; then use the hydrochloric acid to adjust the slurry pH to 3, beat the slurry for 20 minutes; then add 44.44 Kg of halloysite (industrial product of Suzhou Porcelain Clay Company, solid content of 45%), beating for 15 minutes, adding 25kg of water, then adding 16.0kg of ZSM-5 molecular sieve slurry (the content of molecular sieve in the slurry is 37.97% by weight) and REY molecular sieve (dry basis) Stir 7.0kg for 15 minutes, then add 7.5Kg aluminum sol (commercial product obtained by Qilu Catalyst Branch, alumina content 20% by weight), 1Kg composite rare earth chloride sol...

example 2

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

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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 method for preparing a catalytic cracking catalyst. Background technique [0002] In recent years, FCC feedstocks have become increasingly heavier and inferior. In order to obtain high value-added products to the maximum under this circumstance and improve the economic benefits of oil refineries, it is necessary to further improve the performance of existing FCC catalysts. Improvements are getting more and more attention. The matrix of the catalyst can not only pre-crack heavy oil macromolecules and contain metal contaminants, but also play a key role in the formation and physical and chemical properties of the catalyst. [0003] Aluminum binder is a commonly used binder for catalytic cracking catalysts. The semi-synthetic matrix catalytic cracking catalyst using aluminum sol and peptized pseudo-boehmite as the binder has the characteristics of good strength and strong heavy oil cracking ability. Pseudo-boehmite refers to hydrated...

Claims

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Application Information

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Patent Type & Authority Patents(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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