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A kind of ozone catalytic oxidation catalyst and its preparation method and application

An ozone catalytic oxidation and catalyst technology, which is applied in catalyst activation/preparation, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to increase added value, save tower equipment investment, and significantly economical effect of benefit

Active Publication Date: 2022-08-05
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few patent reports on ozone catalytic oxidation catalysts for denitrification. In view of the shortcomings of existing ozone oxidation technology, it is necessary to develop a denitrification catalyst with high catalytic efficiency, stable catalytic performance and no secondary pollution.

Method used

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  • A kind of ozone catalytic oxidation catalyst and its preparation method and application
  • A kind of ozone catalytic oxidation catalyst and its preparation method and application
  • A kind of ozone catalytic oxidation catalyst and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0050] The present embodiment is used to illustrate the preparation method of the ozone catalytic oxidation catalyst of the present invention and the ozone catalytic oxidation catalyst prepared by the method, and the present embodiment adopts the following method to prepare the catalyst:

[0051] (1) Grind the collected fly ash into fine powder, pass through an 80-mesh sieve, take 200 g of the fine powder and place it in a muffle furnace, roast at 600 ° C for 4 hours, wash and dry with water, and add a concentration of 5wt% nitric acid 6 g of the solution was extruded, and then calcined at 500 °C for 3 h to obtain a pretreated carrier;

[0052] (2), take 8.2 mL of cobalt nitrate aqueous solution containing 0.5 g / mL cobalt, 11.8 mL manganese nitrate aqueous solution containing 0.5 g / mL manganese, 13.6 mL copper nitrate aqueous solution containing 0.5 g / mL copper, and 0.5 g / mL iron containing 14.4mL of ferric nitrate aqueous solution and 212.3mL of calcium nitrate aqueous soluti...

Embodiment 2

[0054] The present embodiment is used to illustrate the preparation method of the ozone catalytic oxidation catalyst of the present invention and the ozone catalytic oxidation catalyst prepared by the method, and the present embodiment adopts the following method to prepare the catalyst:

[0055] (1) Grind the collected fly ash into fine powder, pass through a 200-mesh sieve, take 200 g of the fine powder and place it in a muffle furnace, roast it at 700 ° C for 5 hours, wash and dry it, and add a concentration of 5wt% nitric acid The solution was 8g, extruded, and then calcined at 550°C for 4h to obtain a pretreated carrier;

[0056] (2), using ultraviolet modified lamp radiation treatment above-mentioned pretreatment carrier, ultraviolet modified lamp power 250W, dominant wavelength 365nm, irradiation time 6h, obtain the carrier of ultraviolet radiation modification;

[0057] (3), take 10.4 mL of cobalt nitrate aqueous solution containing 0.5 g / mL cobalt, 10.2 mL manganese n...

Embodiment 3

[0059] The present embodiment is used to illustrate the preparation method of the ozone catalytic oxidation catalyst of the present invention and the ozone catalytic oxidation catalyst prepared by the method, and the present embodiment adopts the following method to prepare the catalyst:

[0060] (1) Grind the collected fly ash into fine powder, pass through a 200-mesh sieve, take 200 g of the fine powder and place it in a muffle furnace, roast it at 700 ° C for 5 hours, wash and dry it, and add a concentration of 5wt% nitric acid 10 g of the solution was extruded, and then calcined at 500 °C for 3 h to obtain a pretreated carrier;

[0061] (2), using ultraviolet modified lamp radiation treatment above-mentioned pretreatment carrier, ultraviolet modified lamp power 500W, dominant wavelength 365nm, irradiation time 12h, obtain the carrier of ultraviolet radiation modification;

[0062] (3), take 11.6 mL of cobalt nitrate aqueous solution containing 0.5 g / mL cobalt, 11.6 mL mang...

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Abstract

The invention discloses an ozone catalytic oxidation catalyst and a preparation method and application thereof. The carrier of the catalyst is fly ash, and the active components include cobalt, manganese, copper, iron and calcium in oxidized form. The fly ash comes from solid waste discharged from power plants. The method for preparing the catalyst of the present invention is inexpensive, environmentally friendly, and realizes the resource utilization of solid waste. At the same time, the catalyst prepared by the method of the present invention has the characteristics of multiple recycling, high catalytic activity and stable catalytic performance.

Description

technical field [0001] The invention relates to the field of industrial waste gas treatment and environmental protection catalytic materials, in particular to an ozone catalytic oxidation catalyst and a preparation method thereof, which can be used for a method for treating NOx waste gas. Background technique [0002] With the development of the power industry, fly ash emissions from coal-fired power plants are increasing year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere, and after a long period of accumulation, the heavy metal elements in the fly ash will diffuse into the soil and water, which will seriously endanger the survival and health of human beings. It has a huge negative impact on my country's national economic construction and ecological environment. Fly ash has a large specific surface area and high adsorption activity. How to realize the resource utilization and high-value utilization of fly ash is a big ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J37/02B01J37/34B01J35/10B01D53/86B01D53/56
CPCB01J23/8892B01J37/0207B01J37/345B01D53/8628B01D53/90B01D2251/104B01J35/613Y02A50/20
Inventor 赵文凯杜永顺段美荣刘小高张宏科华卫琦
Owner WANHUA CHEM GRP CO LTD
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