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Catalytic cracking catalyst and preparing method thereof

A catalytic cracking and catalyst technology, used in catalytic cracking, cracking, petroleum industry and other directions, can solve the problem of the limited cracking capacity of cracking active catalyst macromolecules

Inactive Publication Date: 2004-12-08
中国石油化工集团公司长岭炼油化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent announcement No. 1098130A proposes the use of a composite binder matrix composed of aluminum-containing sol and pseudo-boehmite to prepare a catalytic cracking catalyst. The aluminum-based binder can combine the characteristics of peptized pseudo-boehmite with certain cracking activity and the advantages of good bonding performance of aluminum sol and less coke produced by the reaction product, which improves the wear resistance, activity and coke of the catalyst. selectivity, but the support cracking activity of this catalyst and the macromolecule cracking ability of the catalyst are still limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0039] Preparation of silica sol: prepare 2 liters of water glass solution and 1 liter of dilute acidified aluminum sulfate solution (free acid is 148g / l, aluminum oxide content is 20g / l) with 2 liters of silica concentration, and the above two solutions are simultaneously Enter into the rapid mixer reaction to obtain about 3 liters of silica sol.

[0040] Preparation of mixed slurry of kaolin, pseudo-boehmite and molecular sieve: take 300 grams of kaolin respectively, containing 15 grams of Al 2 o 3 Polyaluminum chloride, 175 grams of ground REUSY molecular sieve, 175 grams of ground PSRY molecular sieve, 200 grams of finely ground pseudo-boehmite containing alumina, mixed with deionized water for 2 hours, and then added 35 milliliters of hydrochloric acid (acid / Al 2 o 3 The weight ratio is 0.04) peptization, and the beating is continued for 30 minutes for later use, and the solid content of the mixed slurry is 42m%.

[0041] Preparation of catalyst: Mix 1.45 liters of the ...

example 2

[0043] Silica sol is prepared with example 1.

[0044] Preparation of mixed slurry of kaolin and pseudo-boehmite: take 300 grams of kaolin respectively, containing 8 grams of Al 2 o 3 Polyaluminum chloride, containing 200 grams of alumina finely ground pseudo-boehmite, mixed with deionized water for 2 hours, then added 35 milliliters of hydrochloric acid (acid / Al 2 o 3 The mass ratio is 0.04) peptization, and the beating is continued for 30 minutes for later use, and the solid content of the mixed slurry is 42m%.

[0045] Preparation of molecular sieve slurry: take 175 grams of ground REUSY molecular sieve and 175 grams of ground PSRY molecular sieve, and beat with deionized water.

[0046] Catalyst preparation: Mix 1.45 liters of silica sol, kaolin, pseudoboehmite mixed slurry and molecular sieve slurry prepared above in a rapidly stirring mixing tank to obtain a catalyst precursor slurry, which is then spray-dried and washed with ammonium sulfate aqueous solution , and d...

example 3

[0055] Catalyst F-1 of the present invention and contrast agent samples D-1 and D-2 were treated with 100% steam at 800°C for 4 hours, and then evaluated on a heavy oil micro-reactor device. Wax oil, reaction temperature 482°C, agent-oil ratio 3.5, space velocity 16.0h -1 , and the evaluation results are listed in Table 2.

[0056] As can be seen from Table 2, under the same reaction conditions, the catalyst F-1, D-1 conversion rate is higher than the catalyst D-2, indicating that the activity of the catalyst of the present invention is higher, when the pseudo-boehmite is completely peptized Catalyst D-2 is relatively poor in heavy oil conversion ability. In the product distribution, the heavy oil yield is 2 percentage points higher than that of catalyst sample F-1 of the present invention. The catalyst prepared by pseudoboehmite is not peptized and the reaction performance of catalyst sample of the present invention quite.

[0057] D-1

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Abstract

A catalytic cracking catalyst and its production are disclosed. The catalyst consists of clay 20 - 80m%, silica sol 5 - 30m%, pseudodiaspore 0 - 30%, faujusite with cell parameters of (2.432 - 2.472nm) 5 - 40%, and balanced of ZSM-5 zeolite, beta zeolite and their mixture, oxide selected from Sb, rare earths, Ti, Mg, Zn, P, Sr or their mixture. It uses silica sol as substrate or silica sol and pseudodiaspore as composite substrate to increase macromolecular cracking ability and to improve wearproof performance. It can be produced by non-continuous process or multi-stream continuous process with easy mass production.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst and a preparation method thereof, in particular to a catalytic cracking catalyst containing a silicon sol binder (hereinafter referred to as silicon binder) and a preparation method thereof. Background technique [0002] With the heavy conversion of catalytic cracking raw materials and the increasing demand for unleaded high-octane gasoline for environmental protection, catalysts are developing towards higher ultra-stable Y-type molecular sieve content and macromolecule cracking ability. The wear resistance, activity, stability, and selectivity of the material have a very important influence, especially the macromolecular cracking ability. [0003] As early as the 1980s in China, the research and development of cracking catalysts containing silicon-based binder matrix began. Heavy oil cracking catalyst CHZ-1, the results of small and medium scale tests and industrial applications show that the age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/02
Inventor 黄道培万焱波甘俊张觉吾杨睿
Owner 中国石油化工集团公司长岭炼油化工有限责任公司
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