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Catalytic cracking catalyst and preparation method thereof

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

Active Publication Date: 2010-06-09
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

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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 the step (2), the aqueous solution of the zirconium salt is mixed with ammonia water to react to form a suspension, and then aged for 10 to 48 hours. For the aging temperature No special requirements, preferably 15-50°C, more preferably 25-35°C, after aging, separate the precipitate from the mother liquor, wash with water, until no anions are detected in the washing liquid after washing (anion content≤0.1% by weight, The anion is that of the zirconium salt used, for example chloride, sulfate or nitrate). The washed precipitate is dried and calcined. The present invention has no special requirements on drying conditions. For example, the drying temperature can be 100-200°C, and the drying time is 15-48 hours; the roasting temperature is 400-800°C, preferably 500-700°C, and the roasting time is 2-48 hours 15 hours, preferably 5 to 10 hours. The zirconium salt is, for example, one or more of ...

example 1

[0032] (1) 20Kg decationized water is mixed with 11.9Kg pseudo-boehmite (industrial product of Shandong Aluminum Plant, solid content 63m%), beating, and its pH value is 3 with hydrochloric acid adjustment;

[0033] (2) 5.19Kg of ZrOCl 2 (zirconia content 36% by weight, industrial grade, Zibo Huantuo Chemical Co., Ltd.) mixed with decationized water to obtain a concentration of 1mol / L aqueous solution, then add ammonia (Beijing Chemical Plant, 25% by weight) to pH under stirring The value is 9, then aged at 25°C for 26 hours under stirring, and filtered to obtain ZrO(OH) 2 Gel, washed with deionized water until no Cl was detected in the washing solution after washing - , drying at 120°C for 24 hours, and calcining at 550°C for 2 hours to obtain zirconia powder;

[0034] (3) 18.15Kg halloysite (industrial product of Suzhou China Clay Company, solid content 72.3% by weight) is added in the slurry that step (1) obtains, beats for 5 minutes, then adds 0.61Kg of zirconia powder p...

example 2

[0038] (1) 20Kg decationized water is mixed with 11.9Kg pseudo-boehmite (industrial product of Shandong Aluminum Factory, solid content 63m%), beating, and its pH value is 2.5 with hydrochloric acid adjustment;

[0039] (2) 15.45Kg ZrOCl 2 (Zirconium oxide content 36% by weight, industrial grade, Zibo Huantuo Chemical Co., Ltd.) to make a concentration of 1.5mol / L aqueous solution, then add ammonia (Beijing Chemical Plant, 25% by weight) under stirring to a pH value of 9, Aged for 16 hours under stirring at about 30°C, filtered to obtain ZrO(OH) 2 Gel, washed with deionized water until Cl-free in the washed water - Detected, dried at 115°C for 26 hours, and calcined at 600°C for 5 hours to obtain zirconia powder;

[0040] (3) Add 18.15Kg halloysite (industrial product of Suzhou China Clay Company, solid content 72.3% by weight) into the slurry obtained in step (1) and mix, beat for 5 minutes, then add 3.21Kg of zirconia powder prepared in step (2) , beating for 15 minutes; ...

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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] Calcium in crude oil exists in part in the form of inorganic salts such as chloride, carbonate and sulfate, and a considerable amount exists in the form of non-porphyrin organic metal bonds, such as calcium naphthenate These organic calcium cannot be removed by common desalination methods (such as filtration and electric desalination). Calcium-containing oils are used for catalytic cracking, and the calcium in them 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 yield of light oil in the device, but also causes the catalyst to agglomerate. Scaling of the smoke machine and cyclone will increase the consumption of the device, and even cause the device to stop working. One way to solve this problem is to us...

Claims

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Application Information

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Patent Type & Authority Applications(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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