Preparation method for honeycomb carrier catalyst for gasoline conversion

A technology of honeycomb carrier and catalyst, which is applied in the field of preparation of honeycomb carrier catalyst, which can solve the problems of easy falling off and poor firmness of molecular sieve composition coating, and achieve the effects of not easy falling off, good activity and selectivity, and high conversion rate of olefins

Active Publication Date: 2013-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular sieve composition coating prepared by the method provided by this patent has poor firmness and is easy to fall off during use.

Method used

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  • Preparation method for honeycomb carrier catalyst for gasoline conversion
  • Preparation method for honeycomb carrier catalyst for gasoline conversion

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preparation example Construction

[0014] In the preparation method of the honeycomb-supported catalyst for gasoline conversion provided by the present invention, the coating slurry is preferably prepared by a method comprising the following steps:

[0015] (1) mixing molecular sieve with water and grinding to obtain molecular sieve slurry with molecular sieve particle diameter d90 of 1 to 10 microns;

[0016] (2) mixing the molecular sieve slurry, the silicon oxide component and the dispersant solution obtained in step (1); wherein the content of the dispersant in the dispersant solution is 1 to 10% by weight, and the weight ratio of the dispersant solution to the molecular sieve dry base is 0.01~20:100. The silicon oxide component is silicon oxide with a particle diameter of less than 100 nm and / or a precursor substance that can form silicon oxide with a particle diameter of less than 100 nm. The particle diameter of the silicon oxide component is preferably 1-60 nm, more preferably 5-60 nm.

[0017] Wherein...

Embodiment 1

[0026] Mix 108 grams (on a dry basis, the same below) HY type molecular sieve powder (d90=14 microns, industrial grade, product of Sinopec Catalyst Qilu Branch) with 68.76 grams of deionized water, wet ball mill into molecular sieve slurry, molecular sieve particle diameter d90=5 microns; add 180 grams of water glass (containing 15% by weight of silicon oxide, produced by Sinopec Catalyst Qilu Branch, the modulus is 3.2, the particle diameter is 1 to 5 nm, and the average particle size is 3 nm.) in the slurry to oxidize The addition of silicon water glass is 25% by weight of the molecular sieve weight, stirred for 10 minutes, and 3.24 grams of polyethylene glycol solution is added (the weight percentage of polyethylene glycol is 2% by weight), and the addition of this solution is the weight of the molecular sieve. 3 wt %, stirring for 20 minutes to obtain a catalyst coating preparation mixture slurry (coating slurry), and the molecular sieve content in the slurry is 30 wt %.

...

Embodiment 2

[0030] 120 grams of rare earth Y-type molecular sieve powder (d90=12 microns, RE 2 O 3 The content is 3% by weight, the product of Sinopec Catalyst Qilu Branch) is mixed with 252 grams of deionized water, wet ball milled into a slurry, the molecular sieve particle diameter d90 in the slurry is 8 microns; 96 grams of silica gel (containing 15 % by weight, a product of Sinopec Catalyst Qilu Branch, the viscosity of the silica gel is 600cst (viscosity at 25°C), the particle diameter is 5-15nm, the average particle size is 12nm), and the amount of silica added is 12% by weight of the molecular sieve weight, stirring 15 minutes; add 12 grams of polyacrylic acid solution (polyacrylic acid content is 1% by weight), the amount of polyacrylic acid solution added is 10% by weight of the molecular sieve weight, and stirred for 30 minutes to obtain a catalyst coating slurry, wherein the molecular sieve content is 25% by weight. The obtained catalyst coating slurry was filled with all the...

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Abstract

The present invention relates to a preparation method for a honeycomb carrier catalyst for gasoline conversion. The method comprises the following step, wherein the step comprises: coating a honeycomb carrier by a coating slurry, the coating slurry comprises a molecular sieve, a silicon oxide component and water, the coating slurry contains or does not contain the dispersing agent. With adopting the weight of the coating slurry as the reference, the weight of the molecular sieve is 3-60% of the weight of the coating slurry. The particle diameter of the silicon oxide component is less than 100 nm. The particle diameter d90 of the molecular sieve is 1-10 mum. The molecular sieve composition-containing honeycomb carrier catalyst prepared by the method of the present invention has the solid coating, and the prepared gasoline conversion catalyst has high olefin conversion rate and high propylene yield.

Description

technical field [0001] The invention relates to a preparation method of a honeycomb carrier catalyst containing a molecular sieve composition coating for gasoline conversion. Background technique [0002] Molecular sieve is an important catalytic material for heterogeneous catalytic reaction and is widely used in petroleum refining and processing, petrochemical and fine chemical production. In the process of use, molecular sieve or molecular sieve composition is usually made into a certain particle shape, for example, a bar-shaped particle catalyst applied to a particle packed bed, and a microsphere catalyst applied to a fluidized bed. In recent years, honeycomb-supported catalysts loaded with molecular sieve components have begun to be applied in industrial catalysis. Such catalysts usually include a honeycomb support and a molecular sieve component (molecular sieve or molecular sieve-containing composition) supporting layer, wherein the honeycomb support has been shaped an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/06B01J29/08B01J29/40B01J29/80B01J29/85B01J35/04C07C11/06C07C4/06C10G11/05
CPCY02P20/52
Inventor 田辉平邵潜王鹏孙言
Owner CHINA PETROLEUM & CHEM CORP
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