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Catalyst for wet flue gas denitrification and application thereof

A catalyst and denitrification technology applied in the chemical industry to achieve the effects of easy recovery, high catalytic activity, and improved denitrification efficiency

Inactive Publication Date: 2020-05-29
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But H 2 o 2 Cannot efficiently oxidize NO to NO 2 , while H 2 o 2 Under the action of the catalyst, a large number of active free radicals with strong redox ability can be generated . OH(2.80V)

Method used

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  • Catalyst for wet flue gas denitrification and application thereof
  • Catalyst for wet flue gas denitrification and application thereof

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preparation example Construction

[0023] A catalyst for wet flue gas denitrification, the active ingredient of which is composed of iron oxide and foamed copper oxide (hereinafter referred to as Fe 2 o 3 @CuO x ), the preparation method of the catalyst is as follows:

[0024] Step 1, use 13.56mol / L acetone and 0.1mol / L dilute hydrochloric acid to remove dirt from the copper foam under ultrasonic vibration, and wash with deionized water to remove residual hydrochloric acid and acetone to obtain clean copper foam;

[0025] Step 2, roasting the clean foamed copper in air at 500°C for 6 hours to obtain foamed copper oxide;

[0026] Step 3, 1.4mmol FeSO 4 ·7H 2 O was dissolved in 70 ml deionized water with stirring to form FeSO 4 solution, then the solution and foamed copper oxide were transferred to a lined stainless steel autoclave, and 2.5 mmol of sodium hydroxide tablets were added quickly to obtain a mixed solution;

[0027] Step 4, place the high-pressure reaction kettle with the mixed solution in an ov...

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Abstract

The invention relates to a catalyst for wet flue gas denitrification and application thereof, and belongs to the field of chemical engineering. The active components of the composite catalyst for wetflue gas denitrification comprise ferric oxide and foamed copper oxide, and the mass ratio of ferric oxide to foamed copper oxide is (1.8-2.3):1. The catalyst for wet flue gas denitrification providedby the invention can maintain a denitrification rate of 75% or more at a temperature of 40-60 DEG C and a hydrogen peroxide concentration of 1.5 mol / L. The catalyst is relatively stable, has relatively high industrial utilization value, and can be widely applied to wet-process simultaneous desulfurization and denitrification in the future.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a catalyst for wet flue gas denitrification and application thereof. Background technique [0002] China is the world's largest coal producer and largest coal consumer. Currently, coal accounts for about 70% of the energy structure. It is predicted that by 2050, my country's thermal power generation will still account for more than 50% of the country's total power generation. Therefore, the dominant position of coal in my country's energy framework will be difficult to change for a long period of time. [0003] The coal combustion process is accompanied by the generation of a large number of pollutants, such as nitrogen oxides, sulfur dioxide, dust and heavy metal particles, etc. These pollutants have caused serious harm to the environment. With the increasingly severe environment, the control and treatment of flue gas pollutants in power plants has received extensive attention. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J35/10B01D53/86B01D53/56
CPCB01J23/745B01J23/002B01D53/8628B01D2258/0283B01J35/60
Inventor 潘卫国秦阳郭瑞堂李雨轩郭德宇张中伟
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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