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Catalyst for removing nitrogen oxide and organic pollutant discharged in burning and method for preparing same

A technology for organic pollutants and nitrogen oxides, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as cost increase and flue gas heating, etc. To achieve the effect of increased adsorption capacity, strong adsorption capacity and strong thermal stability

Inactive Publication Date: 2009-08-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the current operating temperature of mature SCR commercial catalysts is generally 300-400°C, a large amount of flue gas needs to be heated, resulting in increased costs

Method used

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  • Catalyst for removing nitrogen oxide and organic pollutant discharged in burning and method for preparing same
  • Catalyst for removing nitrogen oxide and organic pollutant discharged in burning and method for preparing same
  • Catalyst for removing nitrogen oxide and organic pollutant discharged in burning and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put the carbon nanotubes into 60% nitric acid solution, heat at reflux for 2h, then wash with deionized water until neutral, dry at 80°C, add 0.1g of the above-mentioned HNO 3 Purified CNTs were sonicated in isopropanol for 30 minutes, and then poured into a three-necked flask placed in a 70°C water bath as the bottom solution; after grinding 3 g of aluminum isopropoxide, added to 60 ml of isopropanol and sonicated for 30 minutes, poured The liquid bottle is used as the aluminum alcohol phase, pour 10ml of deionized water into 20ml of isopropanol, add 0.2g of peptizer ammonium bifluoride and 0.2g of surfactant polyethylene glycol 1000 until completely dissolved, and pour into another drop bottle as Water phase: insert the dropping bottle into the side of the three-necked flask, open the valve of the dropping bottle while the bottom liquid is stirring, control the flow rate of the water phase to 0.5ml / s, and the flow rate of the aluminum alcohol phase to 1ml / s, after the ...

Embodiment 2

[0023] Put the carbon nanotubes into 60% nitric acid solution, heat at reflux for 2h, then wash with deionized water until neutral, dry at 80°C, add 0.1g of the above-mentioned HNO 3 Purified CNTs were sonicated in isopropanol for 30 minutes, and then poured into a three-necked flask placed in a 70°C water bath as the bottom solution; 2 g of aluminum isopropoxide was ground and added to 50 ml of isopropanol for 30 minutes of sonication, and then poured into a drop The liquid bottle is used as the aluminum alcohol phase, pour 6ml of deionized water into 19ml of isopropanol, add 0.15g of peptizer ammonium bifluoride and 0.15g of surfactant polyethylene glycol 1000 until completely dissolved, and pour into another drop bottle as Water phase: insert the dropping bottle into the side of the three-necked flask, open the valve of the dropping bottle while the bottom liquid is stirring, control the flow rate of the water phase to 0.5ml / s, and the flow rate of the aluminum alcohol phase...

Embodiment 3

[0026] Put the carbon nanotubes into 60% nitric acid solution, heat at reflux for 2h, then wash with deionized water until neutral, dry at 80°C, add 0.1g of the above-mentioned HNO 3 Purified CNTs were sonicated in isopropanol for 30 minutes, and then poured into a three-necked flask placed in a water bath at 70°C as the bottom solution; after grinding 2.2g of aluminum isopropoxide, added 56ml of isopropanol to sonicate for 30 minutes and poured into The drop bottle is used as the aluminum alcohol phase, pour 8ml of deionized water into 20ml of isopropanol, add 0.18g of peptizer ammonium bifluoride and 0.18g of surfactant polyethylene glycol 1000 until completely dissolved, and pour into another drop bottle As the water phase; insert the dropping bottle into the side of the three-necked flask, open the valve of the dropping bottle while the bottom liquid is stirring, control the flow rate of the water phase to 0.5ml / s, and the flow rate of the aluminum alcohol phase to 1ml / s, a...

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Abstract

The invention discloses a catalyst for removing nitrogen oxide and organic pollutant discharged in burning, comprising carbon nanotube and alumina as the carrier and manganese oxide as the active ingredient, the active ingredient in the catalyst accounts for 1 to 10% of the total catalyst mass. The catalyst is prepared by a solvent-thermal method. In the inventive catalyst, CNTs and Al2O3 are simultaneously used as the carrier for the first time, thus the catalyst has big specific surface area and high mechanical strength, at the same tine the temperature of the selective catalytic reaction is reduced, 94.2% of chlorobenzene removing ratio can be obtained at the temperature of 150 DEG C, 88.8% of NOx removing ratio is obtained at the temperature of 200 DEG C. The catalyst can be used for removing the nitrogen oxide (NOx)and dioxin organic pollutant discharged in the high-temperature process in the fire coal power plant, metallurgy industry, garbage burning and the like.

Description

technical field [0001] The invention relates to a method for removing nitrogen oxides (NOx) emitted from high-temperature processes such as coal-fired power plants, metallurgical industries, and garbage incineration. X ) and dioxin (Dioxin) type persistent organic pollutants catalyst and preparation method. Background technique [0002] With the improvement of my country's comprehensive national strength, people's living standards have been continuously improved at the same time, accompanied by a large amount of energy consumption and the deterioration of the environment. Among them, nitrogen oxides (NO X ) and dioxin (Dioxin) persistent organic pollutants are two main factors of environmental pollution. For example, in 2000 China's NO emissions into the atmosphere X The total amount reached 15 million tons, far exceeding the amount of NO produced by natural processes such as lightning. X amount (estimated at 380,000 tons per year in China). The emission of PCDD / DFs in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01D53/56B01D53/86A62D3/38A62D101/28
Inventor 田维樊孝玉杨杭生张孝彬
Owner ZHEJIANG UNIV
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