Catalytic cracking catalyst for producing low-carbon olefin and application thereof

A low-carbon olefin, catalytic cracking technology, applied in catalytic cracking, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problem of low ethylene yield, etc. high rate effect

Active Publication Date: 2013-07-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved in the present invention is to provide a kind of cracking catalyst for the production of low-carbon olefins by catalytic cracking of heavy oil for the low ethylene yield of the existing catalytic cracking catalyst containing rectorite for producing low-carbon olefins. The ethylene productive rate, another technical problem to be solved in the present invention is to provide the application method of described catalyst

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  • Catalytic cracking catalyst for producing low-carbon olefin and application thereof

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preparation example Construction

[0016] In the preparation method of the catalytic cracking catalyst provided by the invention, the particle A containing molecular sieve and aluminum binder and the particle B containing rectorite and silicon oxide are respectively prepared, and then the two particles are mixed. In order to make the prepared catalyst have better wear resistance and higher low-carbon olefins yield and lower coke yield, a kind of preferred preparation method of catalyst provided by the present invention comprises the following steps:

[0017] (1) prepare aluminum binder slurry;

[0018] (2) adding molecular sieves to the slurry obtained in step (1), beating;

[0019] (3) adding kaolin to the slurry obtained in step (2), beating;

[0020] (4) Spray drying the slurry obtained in step (3) to obtain particle A;

[0021] (5) with H 2 SO 4 Acidify the water glass while stirring until the pH of the resulting mixture is 1.0 to 3.0;

[0022] (6) retort earth is added in the mixture that step (5) obt...

Embodiment 1

[0037] (1) 20Kg decationized water is mixed with 10Kg pseudo-boehmite (industrial product of Shandong Aluminum Factory, solid content 63% by weight), beating, and its pH value is adjusted to 3 with hydrochloric acid (concentration 30% by weight, the same below); Add 10Kg aluminum sol (produced by Qilu Petrochemical Catalyst Factory, Al 2 o 3 content is 21.7% by weight), and stirred for 40 minutes to obtain an aluminum binder slurry with a pH value of 2.7;

[0038] (2) Add 20Kg of molecular sieve slurry to the aluminum bonding slurry obtained in step (1) (which contains 8Kg of ZRP zeolite, ZRP zeolite silicon-aluminum ratio 40, phosphorus 2.5% by weight, rare earth (RE 2 o 3 )1% by weight, which is a product of Sinopec Catalyst Qilu Branch);

[0039] (3) 19Kg halloysite (industrial product of Suzhou China Clay Co., Ltd., solid content 72.3% by weight) was added to the slurry obtained in step (2), and beaten for 30 minutes;

[0040] (4) Spray drying the slurry obtained in st...

Embodiment 2

[0046] (1) 20Kg decationized water is mixed with 10Kg pseudo-boehmite (industrial product of Shandong Aluminum Factory, solid content 63% by weight), beating, and its pH value is adjusted to 3 with hydrochloric acid; Add 10Kg aluminum sol (Qilu Petrochemical Catalyst Factory Produced by Al 2 o 3 Content is 21.7% by weight), stirred for 40 minutes. Obtain an aluminum binder slurry with a pH value of 2.7;

[0047] (2) Add 20Kg of molecular sieve slurry to the aluminum binder slurry obtained in step (1) (wherein containing ZRP zeolite 5Kg, DASY2.0 zeolite 1Kg; ZRP zeolite silicon-aluminum ratio 60, containing phosphorus 2.5% by weight, containing rare earth (RE 2 o 3 )1% by weight; DASY2.0 zeolite containing rare earth (RE 2 o 3 ) 2% by weight; two kinds of zeolites are products of Sinopec Catalyst Qilu Branch);

[0048] (3) 15Kg halloysite (industrial product of Suzhou China Clay Co., Ltd., solid content 72.3% by weight) was added to the slurry obtained in step (2), beatin...

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Abstract

The invention discloses a catalytic cracking catalyst for producing low-carbon olefin. The catalyst consists of 0.5-15 parts by weight of particles A and 1 part by weight of particles B, wherein the particles A include 10-85 percent by weight of aluminum binder, 15-60 percent by weight of molecular sieve and 0-75 percent by weight of clay based on the total weight of the particles A; the molecular sieve is MFI zeolite or MFI zeolite and Y type zeolite; the clay is one or more of montmorillonoid, diatomite, halloysite, soapstone, sepiolite, attapulgite, hydrotalcite and bentonite; and the particles B include 20-80 percent by weight of rectorite and 20-80 percent by weight of silicon oxide binder in terms of silicon oxide based on the total weight of the particles B. The catalyst provided by the invention has high olefin yield and excellent wear resistance.

Description

technical field [0001] The invention relates to a catalyst for producing light olefins by catalytic cracking of heavy oil and its preparation and application. Background technique [0002] Ethylene and propylene are important chemical raw materials with strong and growing demand. At present, more than 95% of ethylene and propylene in the market are provided by naphtha steam cracking and heavy oil catalytic production of low-carbon olefins. In recent years, as petroleum raw materials have gradually become heavier and worse, the technology of heavy oil catalytic production of low-carbon olefins has been greatly developed due to low energy consumption, low raw material requirements, and flexible adjustment of product distribution. Great prospects for development. [0003] Rectorite is a regular interlayer mineral between dioctahedral sodium mica and montmorillonite. The montmorillonite layer has cation exchange and expansion properties, while the mica layer does not have this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/40B01J29/80C10G11/05C07C4/06C07C11/04C07C11/06
CPCY02P20/52
Inventor 刘宇键许昀赵留周田辉平
Owner CHINA PETROLEUM & CHEM CORP
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