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Manganese-based low-temperature SCR (selective catalytic reduction) denitration catalyst supported on glass fiber cloth and preparation method of catalyst

A technology of glass fiber cloth and denitrification catalyst, which is applied in the field of industrial waste gas treatment and environmental protection catalytic materials, can solve the problems of poor firmness and uneven load, and achieve the effects of uniform load, good insulation and good denitrification performance

Active Publication Date: 2016-04-06
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a manganese-based low-temperature SCR denitration catalyst loaded on glass fiber cloth and its preparation method. The method is simple and easy to operate, and can solve the uneven loading and poor firmness of the manganese-based low-temperature SCR denitrification catalyst in the load. and other issues, suitable for promotion and application

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0033] A method for preparing a manganese-based low-temperature SCR denitration catalyst supported by glass fiber cloth, comprising the following steps:

[0034] 1) Cut the glass fiber cloth into a certain size and shape according to the actual use, soak it in soapy water, wash and dry it, and then corrode it in 1mol / L hydrochloric acid for 20 minutes to obtain the pretreated glass fiber cloth, dry it and After weighing, put it aside for later use;

[0035] 2) Put the low-temperature glue for low-temperature denitrification manganese-based catalyst loading and the manganese-based low-temperature SCR denitration catalyst into the container at a ratio of 2:1 between the volume of the low-temperature glue and the mass of the manganese-based low-temperature SCR denitration catalyst, and stir with a stirring bar to mix Evenly, stand for later use;

[0036] 3) Spread the pretreated glass fiber cloth obtained in step 1) on a stainless steel workbench, and use a sprayer to evenly coat ...

Embodiment 2

[0041] A method for preparing a manganese-based low-temperature SCR denitration catalyst supported by glass fiber cloth, comprising the following steps:

[0042] 1) Cut the glass fiber cloth into a certain size and shape according to the actual use, soak it in soapy water, wash and dry it, and then corrode it in 2mol / L hydrochloric acid for 30 minutes to obtain the pretreated glass fiber cloth, dry it and After weighing, put it aside for later use;

[0043] 2) Put the low-temperature gel for low-temperature denitrification manganese-based catalyst loading and the manganese-based low-temperature SCR denitrification catalyst into the container at a ratio of 4:1 between the volume of the low-temperature gel and the mass of the manganese-based low-temperature SCR denitrification catalyst, and stir with a stirring bar to mix Evenly, stand for later use;

[0044] 3) Spread the pretreated glass fiber cloth obtained in step 1) on a stainless steel workbench, and use a sprayer to even...

Embodiment 3

[0049] A method for preparing a manganese-based low-temperature SCR denitration catalyst supported by glass fiber cloth, comprising the following steps:

[0050] 1) Cut the glass fiber cloth into a certain size and shape according to the actual use, soak it in soapy water, wash and dry it, and then corrode it in 3mol / L hydrochloric acid for 40min to obtain the pretreated glass fiber cloth, dry it and After weighing, put it aside for later use;

[0051] 2) Put the low-temperature gel for low-temperature denitrification manganese-based catalyst loading and the manganese-based low-temperature SCR denitrification catalyst into the container at a ratio of 8:1 between the volume of the low-temperature gel and the mass of the manganese-based low-temperature SCR denitrification catalyst, and stir with a stirring bar to mix Evenly, stand for later use;

[0052] 3) Spread the pretreated glass fiber cloth obtained in step 1) on a stainless steel workbench, and use a sprayer to evenly co...

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Abstract

The invention discloses a preparation method of a manganese-based low-temperature SCR (selective catalytic reduction) denitration catalyst supported on glass fiber cloth. The preparation method comprises steps including pretreatment of the glass fiber cloth, a process for supporting a manganese-based low-temperature SCR denitration catalyst on the glass fiber cloth by the aid of low-temperature glue for supporting of low-temperature denitration manganese-based catalysts, thermal treatment, infrared radiation treatment and the like. The prepared manganese-based low-temperature SCR denitration catalyst supported on the glass fiber cloth keeps the characteristics of good glass fiber insulativity, high thermal resistance, good corrosion resistance, high mechanical strength and the like; meanwhile, the catalyst is uniformly supported on glass fibers in the prepared material and has better firmness and excellent denitration performance under the low temperature condition (80-180 DEG C), the highest denitration rate can reach 98%, and the manganese-based low-temperature SCR denitration catalyst has wide application prospect.

Description

technical field [0001] The invention belongs to the field of industrial waste gas treatment and environmental protection catalytic materials, and in particular relates to a manganese-based low-temperature SCR denitrification catalyst supported by glass fiber cloth and a preparation method thereof. Background technique [0002] Nitrogen oxides (NO x ) can not only lead to the formation of acid rain, but also react with ozone to form photochemical smog. At present, photochemical smog has become an important air pollutant after inhalable particulate matter and sulfur dioxide. It is worth noting that with NO x Emissions are increasing year by year, the trend of regional acid deposition is deteriorating, secondary particulate matter ozone (O 3 ) and fine inhalable particulate matter (PM2.5) remain high, posing a huge threat to human health and the ecological environment. The control and treatment of nitrogen oxides is imperative. [0003] Among many denitrification technolog...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J23/889B01J35/02B01D53/86B01D53/56
CPCB01D53/8628B01J23/002B01J23/34B01J23/8892B01D2258/02B01J35/00B01J35/30
Inventor 谢峻林董盼盼何峰胡华金其奇
Owner WUHAN UNIV OF TECH
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