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Catalytic cracking catalyst, preparation method thereof, and method for catalytic cracking of hydrocarbon oil

A catalytic cracking and catalyst technology, used in catalytic cracking, physical/chemical process catalyst, hydrocarbon cracking to produce hydrocarbons, etc. The effect of high yield and ethylene selectivity and high cracking capacity

Active Publication Date: 2022-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the prior art, the effect of modulating the properties of molecular sieves on the improvement of ethylene yield and selectivity is not obvious enough

Method used

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  • Catalytic cracking catalyst, preparation method thereof, and method for catalytic cracking of hydrocarbon oil
  • Catalytic cracking catalyst, preparation method thereof, and method for catalytic cracking of hydrocarbon oil
  • Catalytic cracking catalyst, preparation method thereof, and method for catalytic cracking of hydrocarbon oil

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Embodiment approach

[0057]A specific embodiment, based on the dry basis weight of the phosphorus-aluminum inorganic binder, the phosphorus-aluminum inorganic binder includes Al 2 o 3 15-40% by weight aluminum component, with P 2 o 5 45-80% by weight of the phosphorus component and 0-40% by weight of the first clay based on dry weight, and its P / Al weight ratio is 1.0-6.0, the pH value is 1-3.5, and the solid content is 15- 60% by weight; for example including Al 2 o 3 15-40% by weight aluminum component, with P 2 o 5 A phosphorus component of 45-80% by weight and a first clay of 1-40% by weight on a dry basis; preferably containing Al 2 o 3 15-35% by weight of the aluminum component, as P 2 o 5 50-75% by weight of the phosphorus component and 8-35% by weight of the first clay based on dry weight, and its P / Al weight ratio is preferably 1.2-6.0, more preferably 2.0-5.0, and the pH value is preferably 1.5-3.0.

[0058] Another specific embodiment, based on the dry basis weight of the pho...

Embodiment 1

[0109] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch, synthesized without amine method, n(SiO 2 ) / n(Al 2 o 3 )=27) filter out mother liquor, wash with water to Na 2O content is lower than 5.0% by weight, and filter cake is obtained by filtration; Get above-mentioned molecular sieve 100g (dry basis) and add in 1000g 2.0% NaOH solution, heat up to 65 ℃, after reacting for 30min, after rapidly cooling to room temperature, filter, wash to filtrate neutral. Then, add 800g water to the filter cake to make a slurry, add 40gNH 4 Cl, heated to 75°C, exchanged for 1h, to Na 2 The O content is lower than 0.2% by weight, filtered and washed to obtain a molecular sieve filter cake; take 50 g (dry basis) of the above molecular sieve filter cake, add water to the filter cake and beat to obtain a molecular sieve slurry with a solid content of 40% by weight, add 9.7gH 3 PO 4 (Concentration 85% by weight), 4.6gFe(NO 3 ) 3 9H 2 O and 8.1gLa(NO 3 ) 3 ·6H 2 O, mi...

Embodiment 2

[0111] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch, synthesized without amine method, n(SiO 2 ) / n(Al 2 o 3 )=27) filter out mother liquor, wash with water to Na 2 O content is lower than 5.0% by weight, and filter cake is obtained by filtration; Get above-mentioned molecular sieve 100g (dry basis) and add in 1000g 2.0% NaOH solution, heat up to 65 ℃, after reacting for 30min, after rapidly cooling to room temperature, filter, wash to filtrate neutral. Then, add 800g water to the filter cake to make a slurry, add 40g NH 4 Cl, heated to 75°C, exchanged for 1h, to Na 2 O content is lower than 0.2% by weight, filters, washes, and obtains molecular sieve filter cake; Get above-mentioned molecular sieve filter cake 50g (dry basis), filter cake is added water beating and obtains the molecular sieve slurry that solid content is 40% by weight, adds 5.8gH 3 PO 4 (concentration 85% by weight), 3.1gFe(NO 3 ) 3 9H 2 O and 4.9gCe(NO 3 ) 2 ·6H 2 O, mixed ...

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Abstract

The invention relates to a catalytic cracking catalyst and a preparation method thereof and a method for catalytic cracking of hydrocarbon oil. Based on the dry basis weight of the catalyst, the catalyst contains 1-30% by weight of Y-type molecular sieve based on the dry basis weight. 5-55% by weight of mesoporous-rich phosphorous and metal-containing MFI structured molecular sieve, 1-60% by weight of inorganic binder on dry basis and optionally 0-60% by weight of The second clay, the inorganic binder includes phosphorus aluminum inorganic binder and / or other inorganic binders. The catalyst of the invention has better ethylene selectivity in the petroleum hydrocarbon catalytic cracking reaction, and can produce more propylene and BTX at the same time.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst, a preparation method thereof and a method for catalytic cracking of hydrocarbon oil. Background technique [0002] Fluid catalytic cracking (FCC) has been one of the main processing methods for lightening crude oil in China due to its short process and good economic benefits. At present, the contradiction between the supply and demand of domestic refined oil products is prominent, while important organic chemical raw materials such as ethylene and propylene need to be imported in large quantities for a long time. In order to meet market demand, the development of competitive chemical raw material production technology has attracted attention. [0003] The cracking reaction of hydrocarbons at high temperature is to convert long-chain hydrocarbons into low-carbon olefins such as ethylene and propylene with high added value. In general, according to different mechanisms, the cracking of hydrocarbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/40B01J35/10B01J35/08C07C4/06C07C11/04C07C11/06C10G11/05
CPCB01J29/405C07C4/06C10G11/05B01J35/60B01J35/51C07C11/04C07C11/06Y02P20/52
Inventor 欧阳颖刘建强罗一斌庄立李明罡舒兴田毛国芳张巍
Owner CHINA PETROLEUM & CHEM CORP
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