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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 fas

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] Example 1

[0046] The present embodiment provides a method for producing a filter material, comprising the steps of,

[0047] (1) at 65 ℃, of the glass fiber base material is immersed in a metal salt solution, the immersion time of 1min; wherein the metal salt solution comprises a molar ratio of 11: 1: 4.5 titanyl sulfate, cerium nitrate and acetic acid Mn mass concentration of the metal salt solution is 15wt%.

[0048](2) The glass fiber substrate placed in an atmosphere of 65 deg.] C, spray volume successively on a surface of the glass fiber base concentration after immersion was 40% and the volume concentration of aqueous ammonia solution of 30% hydrogen peroxide solution, per square meter filter base gauge material, spraying aqueous ammonia solution was 220ml / m 2 , The amount of hydrogen peroxide solution was sprayed 160ml / m 2 After the end of spraying, drying the glass fiber base material was placed under 120 deg.] C, removing excess water and other liquids.

[00...

Example Embodiment

[0051] Example 2

[0052] The present embodiment provides a method for producing a filter material, comprising the steps of,

[0053] (1) at 60 ℃, the needle felt polyimide substrate was immersed in a metal salt solution, the immersion time was 1.5min; wherein the metal salt solution comprises a molar ratio of 11: 1: 4.5 oxysulfate titanium, and manganese acetate, cerium nitrate, the metal salt concentration of the solution was 10wt%.

[0054] (2) the substrate is then placed in a polyimide needle felt atmosphere of 70 deg.] C, followed by spray mass concentration on the surface of the polyimide substrate after impregnation needle felt urea aqueous solution and the volume concentration of 12 to 40% % hydrogen peroxide solution, the substrate as a spray amount per square meter of filter urea aqueous solution is 200ml / m 2 , The amount of hydrogen peroxide solution was sprayed 140ml / m 2 After the end of spraying, the substrate is a polyimide needle felt deg.] C oven dried under c...

Example Embodiment

[0056] Example 3

[0057] The present embodiment provides a method for producing a filter material, comprising the steps of,

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

[0059] (2) The compound needle felt was then placed in 70 deg.] C in an atmosphere of a substrate, sequentially spray volume concentration needle felt surface of the composite substrate after dipping of 40% aqueous ammonia solution and the volume concentration of 40% hydrogen peroxide solution to per square meter filter substrate, the amount of ammonia solution was sprayed 320ml / m 2 , The amount of hydrogen peroxide solution was sprayed 270ml / m 2 After the end of spraying, drying the composite needle felt substrate was place...

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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
CPCB01D39/14B01J31/38B01J35/02B01D46/0001B01D53/8631B01D53/8628B01D2239/0407B01D2239/10B01D2258/0283
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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