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Catalyst for oxygen-containing compound conversion to produce olefine microshpere and preparing method thereof

A catalyst and a technology for producing olefins, which are used in the production of hydrocarbons from oxygen-containing organic compounds, metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, etc., can solve problems such as no literature reports, and achieve suitable particle size Distribution, high wear index effect

Active Publication Date: 2010-10-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, research in this area has not been reported in the literature

Method used

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  • Catalyst for oxygen-containing compound conversion to produce olefine microshpere and preparing method thereof
  • Catalyst for oxygen-containing compound conversion to produce olefine microshpere and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 (silicon-phosphorus-aluminum system catalyst)

[0019] According to the calculation that the solid content of oxide dry basis in the feed liquid is 30wt%, the metered silica sol (content 30wt%), kaolin (content 85wt%) and SAPO-34 molecular sieve former powder are sequentially added to a certain amount of deionized water, Stir for 30min (the oxide dry basis mass content of each raw material is respectively 30%, 40%, and 30%) in sequence, and finally add the squash powder (soaked with a small amount of ethanol) equivalent to the total oxide dry basis mass of 0.25%, and stir 30min. The feed liquid is passed through a colloid mill for colloid milling, so that 70% of the particle diameters in the finally obtained slurry are less than 5 μm. After the slurry was left at room temperature for 2 h, pressure spray drying was carried out. The pressure of the pressure nozzle is 1MPa, the inlet temperature is 400°C, and the outlet temperature is not lower than 120°C. ...

Embodiment 2

[0020] Embodiment 2 (silicon-phosphorus-aluminum system catalyst)

[0021] According to the calculation that the dry basis solid content of the oxide in the feed liquid is 30wt%, the measured aluminum sol (content 20wt%), kaolin (content 85wt%) and SAPO-34 molecular sieve former powder are sequentially added to a certain amount of deionized water, and stirred 30min (the oxide dry basis mass content of each raw material is respectively 20%, 50%, 30%) in sequence, finally add the squash powder (soaked with a small amount of ethanol) that is equivalent to the total oxide dry basis mass 1%, and stir for 30min . The feed liquid is passed through a colloid mill so that 70% of the particle diameters in the finally obtained slurry are less than 5 μm. After the slurry was left at room temperature for 2 h, pressure spray drying was carried out. The pressure of the pressure nozzle is 1.5MPa, the inlet temperature is 400°C, and the outlet temperature is not lower than 120°C. The obtain...

Embodiment 3

[0022] Embodiment 3 (silicon-phosphorus-aluminum system catalyst)

[0023]Mix 1.69 kg of phosphoric acid (85 wt%) with 9 kg of deionized water and 2.95 kg of pseudo-boehmite (70 wt%), and stir for 30 minutes to form an aluminum phosphate gel. Mix 1.56kg SAPO-34 molecular sieve raw powder, 0.83kg silica sol (30% content) and 10kg deionized water, stir for 20min, and then add to the previous gel. The solid content of oxide dry basis in the feed liquid is 20wt% (the oxide dry basis mass content of each raw material is respectively 28.7%, 41.3%, 25%, 5%), and finally add 0.5% of the total oxide dry basis mass. % scallop powder (soaked with a small amount of ethanol), stirred for 30min. The feed liquid passes through the colloid mill so that 70% of the particle diameters in the finally obtained slurry are less than 5 μm. The slurry was subjected to centrifugal spray drying. The rotational speed of the centrifugal atomizer is 30Hz, the inlet temperature is 400°C, and the outlet t...

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Abstract

The present invention provides an olefin microsphere catalyst, which is manufactured by an oxygen-containing compound transformation and a preparation method of the catalyst. The catalyst system comprises a silicon oxide, a phosphorus oxide and an alumina and can also contains an alkaline earth metal oxide and a transition metal oxide. The weight contents of each component are that the silicon oxide is 2 percent to 60 percent; the phosphorus oxide is 8 percent to 50 percent; the alumina is 20 percent to 70 percent; the alkaline earth metal oxide is 0 to 10 percent; the transition metal oxide is 0 to 20 percent, and a summation of each component weight contents is 100 percent. The present invention is characterized in that a specific silicoaluminophosphate molecular sieve or a silicoaluminophosphate molecular sieve which contains a transition metal (such as SAPO-34) is adopted as a catalyst active component, which is mixed with other raw materials which contains each oxide and with an organic compound which is used as a pore-forming agent (such as a sesbania powder of natural product), thus a slurry with a certain solid content is prepared. The slurry is completely colloid milled and dried by spray then calcined at the high temperature to form a microsphere catalyst with a proper granularity distribution and attrition index and a higher catalyzing performance.

Description

technical field [0001] The invention relates to the technical field of catalysts, and relates to a microsphere catalyst for the conversion of oxygenates to olefins and a preparation method thereof, and the catalytic application of the catalyst in the reaction of converting oxygenates to light olefins. Background technique [0002] Ethylene and propylene are two basic organic chemical raw materials with the largest demand and widest application in the petrochemical industry, and are known as the mother of modern organic synthesis industry. The methods for producing low-carbon olefins such as ethylene and propylene can be generally divided into two categories: one is the petroleum route, and the domestic method mainly adopts the light oil cracking method, and the United States and some countries with rich ethane resources use the high-temperature conversion method of ethane to produce vinyl. The other is the non-petroleum route, with coal, natural gas, etc. C 1 Resources to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/85B01J29/84C07C1/20C07C11/02
CPCB01J29/84B01J37/0045B01J37/04C07C1/20B01J23/74B01J29/85B01J37/038Y02P20/52Y02P30/20Y02P30/40C07C11/04C07C11/02C07C11/06C07C11/08
Inventor 刘中民田鹏许磊杨立新吕志辉齐越何长青魏迎旭张今令孟霜鹤李铭芝袁翠峪王贤高杨越陆晓朱书魁谢鹏孙新德杨虹熠王华李冰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI