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Catalytic cracking catalyst as well as preparation method and application 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 improvement of ethylene yield and selectivity

Active Publication Date: 2020-12-29
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 as well as preparation method and application thereof
  • Catalytic cracking catalyst as well as preparation method and application thereof
  • Catalytic cracking catalyst as well as preparation method and application thereof

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Embodiment approach

[0059] 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 o5 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 45-80% by weight of the phosphorus component and 1-40% by weight of the first clay 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.

[0060] Another specific embodiment, based on the dry basis weight of the ...

Embodiment 1

[0113] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch Company, 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 9.7g H 3 PO 4 (concentration 85% by weight) and 8.1gLa (NO 3 ) 3 ·6H 2 O, mix evenly, impregnate,...

Embodiment 2

[0115] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch Company, 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 5.8g H 3 PO 4 (Concentration 85% by weight) and 4.9gCe(NO 3 ) 2 ·6H 2 O, mix evenly, impregnate, ...

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Abstract

The invention relates to a catalytic cracking catalyst as well as a preparation method and application thereof. Based on the dry basis weight of the catalytic cracking catalyst, the catalytic crackingcatalyst comprises the following components in percentage by dry basis weight: 1-25wt% of Y-type molecular sieve, 5-50wt% of mesoporous-rich MFI structure molecular sieve, 1-60wt% of inorganic binderand optionally 0-60wt% of second clay, wherein the inorganic binder comprises a phosphorus-aluminum inorganic binder and / or other inorganic binders. The catalytic cracking catalyst provided by the invention has relatively high ethylene selectivity in a petroleum hydrocarbon catalytic cracking reaction.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst and its preparation method and application. Background technique [0002] Fluid Catalytic Cracking (FCC) has always 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 hydrocarbons can be divided into carbanion mec...

Claims

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Application Information

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IPC IPC(8): B01J29/40B01J35/10B01J35/08C07C4/06C07C11/04C07C11/06C10G11/05
CPCB01J29/405C07C4/06C10G11/05B01J35/60B01J35/51C07C11/04C07C11/06Y02P20/52
Inventor 刘建强欧阳颖罗一斌李明罡庄立舒兴田张巍毛国芳
Owner CHINA PETROLEUM & CHEM CORP
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