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Method for preparing binary denitration sulfur-resistant catalyst-loaded filter material by using one-step in-situ synthesis method

An in-situ synthesis and catalyst technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve good sulfur resistance, fast reaction, uniform loading capacity and firm effect

Active Publication Date: 2017-05-31
厦门格锐特环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carrier-free MnO x -CeO 2 The catalyst is currently the most active low-temperature SCR in such reports, and NOx can be almost completely converted to N at a temperature of 120°C. 2 , but there is no suitable technology to successfully apply it to the filter material

Method used

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  • Method for preparing binary denitration sulfur-resistant catalyst-loaded filter material by using one-step in-situ synthesis method
  • Method for preparing binary denitration sulfur-resistant catalyst-loaded filter material by using one-step in-situ synthesis method
  • Method for preparing binary denitration sulfur-resistant catalyst-loaded filter material by using one-step in-situ synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] First weigh 32ml of concentrated nitric acid and add it to 68ml of deionized water to make a 30% dilute nitric acid solution. Then put in 0.753g of PPS and treat it in a water bath at 80°C for 1 hour. After the treatment, wash the PPS with deionized water and ethanol until it is neutral (PH=6~7), and put it in a vacuum drying oven at about 100°C Dry for 1-2h, and dry for later use.

[0030] Add 0.3545 g of cerium trichloride heptahydrate into a beaker with 50 ml of deionized water, stir well, then ultrasonically or shake the solution until the solute is completely dissolved; then add PPS to the cerium chloride solution, and then place it at room temperature Stir for 12 hours until enough Ce is adsorbed on the surface of PPS 2+ After the cations are removed, move them into a water bath, and then configure a potassium permanganate solution with a concentration of 0.02M (according to the mass ratio, polyphenylene sulfide: potassium permanganate = 1:0.2), and slowly dissol...

Embodiment 2

[0033] First weigh 32ml of concentrated nitric acid and add it to 68ml of deionized water to make a 30% dilute nitric acid solution. Then put in 0.6249gPPS and treat it in a water bath at 80°C for 1h. After the treatment, wash the PPS with deionized water and ethanol until it is neutral (PH=6~7), and dry it in a vacuum oven at about 100°C for 1 hour. -2h, dry for later use.

[0034] Add 0.5886g of cerium trichloride heptahydrate into a beaker with 50ml of deionized water, stir evenly, then ultrasonically or shake the prepared solution until the solute is completely dissolved; then add PPS to the cerium chloride solution, and then place it at room temperature Stir for 12 hours until enough Ce is adsorbed on the surface of PPS 2+After the cations are removed, move them into a water bath, and then configure a potassium permanganate solution with a concentration of 0.03M (according to the mass ratio, polyphenylene sulfide: potassium permanganate = 1:0.4), and slowly dissolve the ...

Embodiment 3

[0037] First weigh 32ml of concentrated nitric acid and add it to 68ml of deionized water to make a 30% dilute nitric acid solution. Then put in 0.6830gPPS and treat it in a water bath at 80°C for 1h. After the treatment, wash the PPS with deionized water and ethanol until it is neutral (PH=6~7), and dry it in a vacuum drying oven at about 100°C for 1 hour. -2h, dry for later use.

[0038] Add 0.90416g of cerium chloride trihydrate heptahydrate into a beaker with 50ml of deionized water, stir evenly, then ultrasonically or shake the solution until the solute is completely dissolved; then add PPS to the cerium chloride solution, and then place it at room temperature Stir for 12 hours until enough Ce is adsorbed on the surface of PPS 2+ After the cations are removed, move them into a water bath, and at this time configure a potassium permanganate solution with a concentration of 0.05M (according to the mass ratio, polyphenylene sulfide: potassium permanganate = 1:0.6), and slow...

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Abstract

The invention provides a method for preparing a binary denitration sulfur-resistant catalyst-loaded filter material by using a one-step in-situ synthesis method. The method provided by the invention is characterized in that the binary denitration sulfur-resistant catalyst-loaded filter material is prepared by taking a polyphenylene sulfide filter material treated by concentrated nitric acid as a catalyst carrier, potassium permanganate and cerous chloride heptahydrate as a catalyst precursor and deionized water is utilized as a solvent, and by using an in-situ polymerization method. The loaded filter material can be used as a dedusting agent and a denitration sulfur-resistant agent at the same time, and relatively good denitration sulfur-resistant performance can be achieved when the catalyst loading capacity is greater than 5mg / cm<2>.

Description

technical field [0001] The invention belongs to the technical field of functional composite filter materials, and in particular relates to a method for preparing binary denitrification and antisulfur catalyst-loaded filter materials by a one-step in-situ synthesis method. Background technique [0002] Atmospheric NO X As well as the solid particles and toxic gases contained in the tail gas emitted by industry, it not only has a great impact on the environment, but also has an irreversible impact on people's daily life and health. Countries have successively promulgated laws and regulations to strictly control the emission of nitrogen oxides from coal-fired power plants. The emission standard of air pollutants for thermal power plants (GB13223-2011) stipulates that the emission limit of nitrogen oxides is 100 mg / m 3 , so as much as possible to remove NO in the exhaust gas x It is imperative that a lot of research work has been carried out and great progress has been made. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01J31/32B01D53/86B01D53/56
CPCB01D39/14B01D53/8628B01J31/32
Inventor 郑玉婴郑伟杰
Owner 厦门格锐特环保科技有限公司
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