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Dedusting filter material containing MnO2 catalyst, and preparation method and application thereof

A catalyst and filter material technology, which is applied in the field of dust removal filter material containing MnO2 catalyst and its preparation, can solve the problems of complicated tail flue gas purification system and high treatment cost, and achieves processing cost saving, strong economic practicability, and site space saving. Effect

Active Publication Date: 2013-07-24
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of containing MnO 2 Catalytic dust removal filter material and its preparation method and application. The catalytic filter material has the function of removing PM2.5 and NOx simultaneously, which can solve the shortcomings of the complex and high treatment cost of the tail flue gas purification system in the prior art.

Method used

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  • Dedusting filter material containing MnO2 catalyst, and preparation method and application thereof
  • Dedusting filter material containing MnO2 catalyst, and preparation method and application thereof
  • Dedusting filter material containing MnO2 catalyst, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0028] First, weigh 0.8g of the purified pyrrole monomer and dissolve it in 40mL of acetone to make a 0.3mol / L pyrrole acetone solution, then immerse a circular PPS filter material with a diameter of 3.8cm in the above solution and wait for adsorption for 12 hours Afterwards, the PPS filter material was taken out and dried at room temperature for 1 h. Then add the filter material into 40 mL acidic potassium permanganate solution for ultrasonic reaction for 1 hour, the concentration of potassium permanganate is 0.05 mol / L, and the concentration of sulfuric acid is 1 mol / L. Finally, take out the filter material, wash the residual liquid on it with water and ethanol, put it in an oven and dry it for 6 hours at 110°C for testing. The filter media loading is about 3.5 mg / cm 2 .

[0029] The denitrification performance of the composite filter material was evaluated in a self-made tubular SCR reactor. NO and NH 3 Volume fraction is 0.05%, O 2 The volume fraction is 5%, the rest ...

Embodiment 2

[0031] First, weigh 0.8g of the purified pyrrole monomer and dissolve it in 40mL of acetone to make a 0.3mol / L pyrrole acetone solution, then immerse a circular PPS filter material with a diameter of 3.8cm in the above solution and wait for adsorption for 12 hours Afterwards, the PPS filter material was taken out and dried at room temperature for 0.5 h. Then add the filter material into 40mL acidic potassium permanganate solution for immersion reaction for 12 hours, the concentration of potassium permanganate is 0.025mol / L, and the concentration of sulfuric acid is 1mol / L. Finally, take out the filter material, wash the residual liquid on it with water and ethanol, put it in an oven and dry it for 6 hours at 110°C for testing. The filter media loading is about 2.2 mg / cm 2 .

[0032] The denitrification performance of the composite filter material was evaluated in a self-made tubular SCR reactor. NO and NH 3 Volume fraction is 0.05%, O 2 The volume fraction is 5%, the rest...

Embodiment 3

[0034] First, weigh 1.3g of purified pyrrole monomer and dissolve it in 40mL of acetone to make a 0.5mol / L pyrrole acetone solution, then immerse a circular PPS filter material with a diameter of 3.8cm in the above solution and wait for adsorption for 6h Afterwards, the PPS filter material was taken out and dried at room temperature for 2 h. Then add the filter material into 40 mL of acidic potassium permanganate solution for ultrasonic reaction for 0.5 h, the concentration of potassium permanganate is 0.1 mol / L, and the concentration of sulfuric acid is 1 mol / L. Finally, take out the filter material, wash the residual liquid on it with water and ethanol, put it in an oven and dry it for 3 hours at 110°C for testing. The filter media loading is about 10 mg / cm 2 .

[0035] The denitrification performance of the composite filter material was evaluated in a self-made tubular SCR reactor. NO and NH 3 Volume fraction is 0.05%, O 2 The volume fraction is 5%, the rest is N 2 , ...

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Abstract

The invention discloses a dedusting filter material containing a MnO2 catalyst, and a preparation method and application of the dedusting filter material. A polyphenylene sulfide punched felt is taken as the filter material; potassium permanganate is reduced into an amorphous MnO2 denitrification catalyst, which is inserted and disperses into a polypyrrole matrix, through in-situ reaction of acidic potassium permanganate and pyrrole monomer on the surface of the punched felt, so that the MnO2 has a high denitration rate; and besides, the polypyrrole formed in situ is taken as a medium for connecting the catalyst and the filter material, and therefore, the catalyst is unlikely to drop. The catalytic filter material has a function of removing PM2.5 and NOx simultaneously, and can overcome the disadvantages of complexity, high treatment costs and the like of a tail flue gas purification system in the prior art.

Description

technical field [0001] The invention belongs to the technical field of tail gas control, in particular to a 2 Catalyst dust removal filter material and its preparation method and application. Background technique [0002] my country is a large coal-burning country, and the combustion of coal will emit a large amount of pollutants. According to relevant statistics, 87% of SO in air pollutants 2 , 67% NO x , 71% of CO and 60% of soot come from coal combustion. Among all kinds of coal-fired equipment, the smoke and dust emitted by power plant boilers accounted for more than 40%, and the nitrogen oxide emissions accounted for more than 36.1% of the country's total emissions. growing trend. With the development of our economy and the enhancement of people's awareness of environmental protection, the pollution problem of coal-fired boilers has attracted more and more attention. At present, the industry mainly uses dust removal equipment to filter the dust in the exhaust gas,...

Claims

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Application Information

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IPC IPC(8): B01D39/14B01D46/00B01D53/86B01D53/56B01J31/32
CPCY02C20/10
Inventor 郑玉婴林锦贤汪谢徐哲
Owner FUZHOU UNIV
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