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Catalytic cracking catalyst and preparation method thereof

A catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of insufficient propylene yield, small pore volume, and high bulk density, and achieve high propylene yield and heavy oil High conversion rate and high activity effect

Active Publication Date: 2011-08-10
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst is used for the conversion of calcium-containing raw materials, and the propylene yield is not high enough
[0005] USP4022714 and USP4107088 disclose a catalytic cracking catalyst prepared by titanium, zirconium, iron, cerium, boron modified sodium-containing silica sol and the preparation method, and the silica sol is modified by these metals to improve the specific surface and cracking of the fresh catalyst Active, but there are problems such as high packing density and small pore volume

Method used

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  • Catalytic cracking catalyst and preparation method thereof

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preparation example Construction

[0018] In the preparation method of the catalyst provided by the present invention, in step (2), the aqueous solution of zirconium salt is mixed with ammonia water to react to form a suspension, and then the aging is carried out. The aging time is 10 to 48 hours. No special requirements, preferably 15-50°C, more preferably 25-35°C. After aging, the precipitate is separated from the mother liquor and washed with water until no anions are detected in the washing liquid after washing (anion content≤0.1% by weight, The anion is the anion of the zirconium salt used, such as chloride ion, sulfate ion or nitrate ion). The washed precipitate is dried and roasted. The present invention has no special requirements for drying conditions. For example, the drying temperature can be 100-200°C, and the drying time is 15-48 hours; the baking temperature is 400-800°C, preferably 500-700°C, and the baking time is 2~ 15 hours, preferably 5-10 hours. The zirconium salt is one or more of zirconiu...

example 1

[0032] (1) Mix 20Kg of decationized water with 11.9Kg of pseudo-boehmite (an industrial product of Shandong Aluminum Factory, with a solid content of 63m%), beaten it, and adjust its pH to 3 with hydrochloric acid;

[0033] (2) Put 5.19Kg of ZrOCl 2 (Zirconium oxide content 36% by weight, industrial grade, Zibo Huantuo Chemical Co., Ltd.) was mixed with decationized water to obtain an aqueous solution with a concentration of 1 mol / L, and then ammonia water (Beijing Chemical Plant, 25% by weight) was added with stirring to pH The value is 9, then aging at 25°C for 26 hours under stirring, and filtering to obtain ZrO(OH) 2 Gel, wash with decationized water until Cl is not detected in the washing solution after washing - , Drying at 120°C for 24 hours and calcination at 550°C for 2 hours to obtain zirconia powder;

[0034] (3) Add 18.15Kg of halloysite (industrial product of Suzhou Porcelain Clay Company, 72.3% by weight) into the slurry obtained in step (1), beat the slurry for 5 minu...

example 2

[0038] (1) Mix 20Kg of decationized water with 11.9Kg of pseudo-boehmite (an industrial product of Shandong Aluminum Factory, with a solid content of 63m%), beating, and adjusting the pH to 2.5 with hydrochloric acid;

[0039] (2) Put 15.45Kg ZrOCl 2 (Zirconium oxide content 36% by weight, industrial grade, Zibo Huantuo Chemical Co., Ltd.) was made into an aqueous solution with a concentration of 1.5 mol / L, and then ammonia water (Beijing Chemical Plant, 25% by weight) was added with stirring to a pH of 9, Aged for 16 hours under stirring at about 30°C and filtered to obtain ZrO(OH) 2 Gel, wash with decationized water until there is no Cl in the washed water - It was detected that it was dried at 115°C for 26 hours and calcined at 600°C for 5 hours to obtain zirconia powder;

[0040] (3) Add 18.15Kg of halloysite (industrial product of Suzhou Porcelain Clay Company, solid content 72.3% by weight) into the slurry obtained in step (1) and mix, beat the slurry for 5 minutes, and then a...

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Abstract

The invention provides a zirconium-containing cracking catalyst and a preparation method thereof. The catalyst comprises 10 to 40 weight percent of aluminum binding agent, 0.5 to 50 weight percent of molecular screen, 0 to 60 weight percent of clay, and 3 to 25 weight percent of zirconia. The method is characterized in that in the catalyst preparing process, the zirconium is introduced at twice. The zirconium-containing catalyst prepared by the method has the advantages of good abrasion resistance, high crystallization degree, high calcium pollution resistance, application in cracking calcium-containing hydrocarbon oil and high propylene yield.

Description

Technical field [0001] The invention relates to a catalytic cracking catalyst and a preparation method thereof. Background technique [0002] In addition to some of the calcium in crude oil exists in the form of inorganic salts such as chlorides, carbonates and sulfates, there is also a considerable amount of non-porphyrin organic metal bonds, such as calcium naphthenates. Exist in the form of its homologues, these organic calcium cannot be removed by the usual desalination methods (such as filtration and electric desalination). Calcium-containing oil is used for catalytic cracking. The calcium in it can combine with the phosphorus in the phosphorus-containing catalyst to form calcium phosphate, which not only deteriorates the catalytic performance of the catalyst, reduces the light oil yield of the device, but also causes the catalyst to agglomerate. The hood and the cyclone were fouled, the agent consumption of the device increased, and even the device was shut down. One way ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80C10G11/05
Inventor 龙军许昀田辉平朱玉霞刘宇键赵留周王振波唐立文任飞陈振宇杨青
Owner CHINA PETROLEUM & CHEM CORP
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