Preparation method of catalytic cracking catalyst

A catalytic cracking and catalyst technology, applied in the direction of catalyst activation/preparation, catalytic cracking, physical/chemical process catalysts, etc., can solve the problem of small pore size, achieve high heavy oil conversion capacity, good total liquid recovery, and improve heavy oil conversion effect of ability

Active Publication Date: 2013-08-21
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The soft template is different from the hard template. Although it can be processed into a certain shape and size in the solid state, it will dissolve and disperse to the molecular size in the reaction system. Therefore, the pore size prepared by the soft template method is relatively small.

Method used

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  • Preparation method of catalytic cracking catalyst
  • Preparation method of catalytic cracking catalyst
  • Preparation method of catalytic cracking catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] With 1.35 kilograms of kaolin (dry basis, the industrial product of China Kaolinshi Company, the same below), 4.85 kilograms of aluminum sol (containing Al 2 o 3 23.7wt%, Lanzhou Petrochemical Company Catalyst Factory production, the same below) and 2.4 kilograms of deionized water are added in the beating tank for beating, then add 2.75 kilograms of pseudo-boehmite (solid content 60.0%, Shanxi Aluminum Factory product, the same below), Stir for 2 hours, then add 172 g of 37% by weight hydrochloric acid, stir for 1 hour, then age at 70° C. for 2 hours.

[0033] 1.05 kg of REUSY molecular sieves (solid content 80.9%, Na 2 O content 1.5 wt%, RE 2 o 3 Content 8.2wt%, silicon-aluminum ratio 5.2, Lanzhou Petrochemical Company Catalyst Factory production, the same below) and 1.9 kilograms of deionized water mixing beating after 2 hours, add 62.5 grams of polydimethyldiallylammonium chloride (Hangzhou Yinhu Produced by Chemical Co., Ltd., with a solid content of 40wt%), mi...

Embodiment 2

[0037] Add 1.8 kg of kaolin, 2.53 kg of aluminum sol and 2.6 kg of deionized water into the beating tank for beating, then add 1.42 kg of pseudo-boehmite, stir for 2 hours, then add 152 grams of 37% by weight hydrochloric acid, and stir for 1 hour , aged at 80°C for 2 hours.

[0038] After mixing 2.16 kg of REUSY molecular sieves and 3.0 kg of deionized water for beating for 2 hours, add 125 grams of polydimethyldiallyl ammonium chloride, mix and add to the beating tank for the first step, beating for homogenization for 4 hours, and then Spray dry.

[0039] The catalyst obtained by spray drying was stirred in an aqueous hydrochloric acid solution with pH=2.8 for 20 minutes, filtered, dried at 120°C for 6 hours, and calcined at 600°C for 2 hours to remove polydimethyldiallylammonium chloride to obtain the present invention Cracking catalyst CAT-2.

[0040] The composition of the catalyst CAT-2 is: 36% by weight of kaolin, 17% by weight of alumina from pseudoboehmite, 12% by w...

Embodiment 3

[0042] Add 1.2 kg of kaolin, 1.48 kg of aluminum sol and 2.6 kg of deionized water into the beating tank for beating, then add 3.67 kg of pseudo-boehmite, stir for 2 hours, then add 186 grams of 37% by weight hydrochloric acid, and stir for 1 hour , aged at 70°C for 2 hours.

[0043] After mixing 1.55 kg of REUSY molecular sieve and 2.0 kg of deionized water for beating for 2 hours, add 250 grams of polydimethyldiallyl ammonium chloride, mix and add to the beating tank for the first step, beating for homogenization for 4 hours, and then Spray dry.

[0044] Stir the catalyst obtained by spray drying in an aqueous hydrochloric acid solution with pH=3.2 for 40 minutes, filter, dry at 120°C for 6 hours, and roast at 650°C for 1.5h to remove polydimethyldiallylammonium chloride to obtain the present invention cracking catalyst CAT-3.

[0045] The composition of the catalyst CAT-3 is: 24% by weight of kaolin, 44% by weight of alumina from pseudoboehmite, 7% by weight of alumina fr...

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Abstract

The invention provides a preparation method of a catalytic cracking catalyst. The method comprises mixing polydimethyl diallyl ammonium chloride with matrix slurry and molecular sieve slurry, homogenizing, molding, drying, and roasting to remove the polydimethyl diallyl ammonium chloride to obtain the catalyst, wherein an adding amount of the polydimethyl diallyl ammonium chloride is 0.4-4.5 % of a total mass of dry basis of a catalyst feeding amount, that is, the matrix and the molecular sieve. On basis of mass of the catalyst, the catalyst is 10 parts, the matrix is 90-50 parts and the molecular sieve is 10-50 parts. The method improves a heavy oil conversion capability and a total liquid yield of the catalytic cracking catalyst.

Description

technical field [0001] The invention relates to a preparation method of a catalytic cracking catalyst, in particular to a preparation method of a relatively large pore volume catalytic cracking catalyst. Background technique [0002] The rapid growth of the national economy has prompted my country's increasing dependence on imported crude oil, and the shortage of oil has increasingly become a "bottleneck" restricting my country's economic development. Therefore, how to effectively utilize the existing petroleum resources has become a major issue that needs to be solved urgently in the refining and chemical industry. The quality of domestic crude oil is poor, and the trend of heavy and inferior quality is very obvious, and the fraction above 350 °C exceeds 70%. With the further increase of oilfield exploitation depth, the trend of heavy crude oil will become more serious, and the proportion of vacuum residue in most domestic crude oil is more than 50%. [0003] The catalyti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/08B01J35/10B01J29/08B01J29/70B01J29/40B01J29/18C10G11/05
Inventor 高雄厚熊晓云黄世英赵红娟刘宏海王宝杰张莉赵晓争胡清勋曹庚振潘志爽侯凯军郑云峰刘明霞
Owner PETROCHINA CO LTD
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