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Filter material, and preparation method and application thereof

A filter material and substrate surface technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve the problems of high binding fastness between filter material and catalyst, uniform distribution of catalyst, and good air permeability of integrated filter material, etc. , to achieve the effect of strong bonding fastness, small influence and high bonding fastness

Active Publication Date: 2021-10-08
NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the defects that the integrated filter material for denitrification and dust removal in the prior art cannot simultaneously ensure the high binding fastness between the filter material and the catalyst, the uniform distribution of the catalyst, and the good air permeability of the integrated filter material. Thereby provide a kind of filter material and its preparation method and application

Method used

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  • Filter material, and preparation method and application thereof
  • Filter material, and preparation method and application thereof

Examples

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Embodiment 1

[0046] The present embodiment provides a kind of preparation method of filter material, comprises the following steps,

[0047] (1) Under the condition of 65°C, immerse the glass fiber substrate in the metal salt solution for 1 min; wherein, the metal salt solution includes titanyl sulfate, cerium nitrate and acetic acid in a molar ratio of 11:1:4.5 Manganese, the mass concentration of the metal salt solution is 15wt%.

[0048](2) Then the glass fiber base material is placed under the atmosphere of 65 ℃, and the volume concentration of 40% ammonia solution and the hydrogen peroxide solution of 30% volume concentration are sprayed successively on the surface of the glass fiber base material after immersion, and the per square meter filter In terms of material base, the spraying amount of ammonia solution is 220ml / m 2 , the spraying amount of hydrogen peroxide solution is 160ml / m 2 , After spraying, place the glass fiber substrate at 120°C to dry to remove excess water and oth...

Embodiment 2

[0052] The present embodiment provides a kind of preparation method of filter material, comprises the following steps,

[0053] (1) Under the condition of 60°C, immerse the polyimide needle felt substrate in the metal salt solution for 1.5 minutes; wherein, the metal salt solution includes sulfuric acid oxygen with a molar ratio of 11:1:4.5 Titanium, cerium nitrate and manganese acetate, the concentration of the metal salt solution is 10wt%.

[0054] (2) then the polyimide needle felt base material is placed under the atmosphere of 70 ℃, and the polyimide needle felt base material surface after dipping is sprayed successively that mass concentration is 40% urea aqueous solution and volume concentration is 12 % hydrogen peroxide solution, based on per square meter of filter substrate, the spraying amount of urea solution is 200ml / m 2 , the spraying amount of hydrogen peroxide solution is 140ml / m 2 , after spraying, put the polyimide needle-punched felt substrate at 120°C to d...

Embodiment 3

[0057] The present embodiment provides a kind of preparation method of filter material, comprises the following steps,

[0058] (1) Under the condition of 70°C, the glass fiber and polyimide composite needle felt substrate were immersed in the metal salt solution, and the immersion time was 0.8min; wherein, the metal salt solution included a molar ratio of 11:1: 4.5 titanyl sulfate, cerium nitrate and manganese acetate, the concentration of the metal salt solution is 35wt%.

[0059] (2) The composite needle felt base material is then placed in an atmosphere of 70° C., and the volume concentration of 40% ammonia solution and the volume concentration of 40% hydrogen peroxide solution are sprayed on the surface of the impregnated composite needle felt base material successively, with Calculated per square meter of filter material base material, the spraying amount of ammonia solution is 320ml / m 2 , the spraying amount of hydrogen peroxide solution is 270ml / m 2 , After spraying,...

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Abstract

The invention belongs to the technical field of filter material preparation, and particularly relates to a filter material, and a preparation method and application thereof. The preparation method comprises the following steps: (1) dipping a filter material base material in a metal salt solution at 55-70 DEG C; (2) spraying a urea solution and / or an ammonia water solution on the surface of the impregnated filter material base material, and then spraying a hydrogen peroxide solution on the surface of the filter material base material; and (3) carrying out heat treatment to obtain the filter material. According to the denitration and dust removal integrated filter material obtained by the method, the catalyst can be uniformly distributed on the filter material base material while the high binding strength of the filter material base material and the catalyst can be ensured, and the air permeability of the filter material is not influenced by the existence of the catalyst.

Description

technical field [0001] The invention belongs to the technical field of filter material preparation, and in particular relates to a filter material and its preparation method and application. Background technique [0002] Energy is an important material basis for economic and social development and improvement of people's living standards. With the rapid development of the economy, my country's demand for energy has risen sharply, and heavy industries with serious pollution, such as the smelting industry and power generation industry, have developed rapidly. Most of these industries are based on Coal, as the main combustion material, has caused serious soot pollution, posing a great threat to human life and health. my country has strict restrictions on the emission of smoke and dust, and the standards are becoming more and more stringent. [0003] In the field of industrial flue gas post-treatment, bag filter has been widely used in coal-fired power plants, waste incineration...

Claims

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Application Information

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IPC IPC(8): B01D39/14B01D46/00B01D53/86B01D53/56B01J31/38B01J35/02
CPCB01D39/14B01J31/38B01D46/0001B01D53/8631B01D53/8628B01D2239/0407B01D2239/10B01D2258/0283B01J35/00B01J35/30
Inventor 张振郭晓蓓高政王屹尹奕玲徐涛费传军余佳彬匡新波吴涛
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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