A kind of catalytic cracking catalyst and its preparation method and application

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, and achieve good shape selectivity and rich mesopores Effect of high structure, ethylene yield and ethylene selectivity

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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  • A kind of catalytic cracking catalyst and its preparation method and application
  • A kind of catalytic cracking catalyst and its preparation method and application
  • A kind of catalytic cracking catalyst and its preparation method and application

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Experimental program
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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 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 Al2 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 phos...

Embodiment 1

[0113] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch, synthesized without amine method, n(SiO 2 ) / n(Al 2 o3 )=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, mixed evenly for dipping, drying,...

Embodiment 2

[0115] 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, 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, mixed evenly for dipping, drying, an...

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Abstract

The present invention relates to a catalytic cracking catalyst and its preparation method and application. Based on the dry basis weight of the catalytic cracking catalyst, on a dry basis, the catalytic cracking catalyst contains 1-25 wt% Y-type molecular sieve, 5-50 wt% MFI structure molecular sieve rich in mesopores, 1-60% by weight of an inorganic binder and optionally 0-60% by weight of a second clay, the inorganic binders include phosphor-aluminum inorganic binders and / or other inorganic binders. The catalytic cracking catalyst provided by the invention has high ethylene selectivity in the catalytic cracking reaction of petroleum hydrocarbons.

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 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 mechanism ...

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
CPCB01J29/405B01J35/10B01J35/08C07C4/06C10G11/05C07C11/04C07C11/06Y02P20/52
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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