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Preparation method of filter material

A technology of filter material and filter layer, applied in the direction of filtration separation, separation method, dispersed particle filtration, etc., can solve the problems of loss of function, high filtration resistance, catalyst falling off, etc.

Active Publication Date: 2019-12-27
CHENGDU INTERMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first purpose of the present invention is to provide filter materials, the first aspect solves the problem of high filtration resistance caused by improper compounding of filter materials in the prior art, the second aspect optimizes the technical problem of the composite structure of different functional layers in the filter material, and the third Solve the technical problem of loss of function caused by catalyst shedding of chemically adsorbed gas pollutants

Method used

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  • Preparation method of filter material
  • Preparation method of filter material
  • Preparation method of filter material

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Experimental program
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Embodiment 1

[0139] Such as figure 1 As shown, the filter material of this embodiment has different functional layers, and all the functional layers are composed of a chemical filtering functional layer 120 and a protective functional layer 130, and the chemical filtering functional layer 120 and the protective functional layer 130 overlap one another along the filtering direction.

[0140] The protective functional layer 130 has a porous structure with a pore size smaller than the particle size of the catalyst in the chemical filter layer; the protective functional layer 130 is a PP fiber felt with a pore size of 90 μm and a thickness of 3 mm.

[0141] The chemical filter functional layer 120 is a chemical filter layer for filtering at least one volatile organic compound; the chemical filter layer is a formaldehyde decomposition catalytic felt, and the formaldehyde decomposition catalytic felt includes a breathable support and is attached to the breathable support. formaldehyde decomposit...

Embodiment 2

[0144] Such as figure 2 As shown, the filter material of this embodiment has different functional layers, and all the functional layers are composed of a physical filtering functional layer and a chemical filtering functional layer 120, and the physical filtering functional layer and the chemical filtering functional layer 120 overlap along the filtering direction.

[0145] The chemical filter functional layer 120 is a chemical filter layer for filtering at least one volatile organic compound; the chemical filter layer is a formaldehyde decomposition catalytic felt, and the formaldehyde decomposition catalytic felt includes a breathable support and is attached to the breathable support. formaldehyde decomposition catalyst; the thickness of the chemical filter layer is 2mm, and the air permeability is 4560m 3 / m 2 h.

[0146] Described physical filtration functional layer is the first physical filtration layer that filters solid particles in the object to be filtered; Descri...

Embodiment 3

[0149] Such as image 3 As shown, the filter material of this embodiment has different functional layers, and all the functional layers are composed of a physical filtering functional layer and a chemical filtering functional layer 120, and the physical filtering functional layer and the chemical filtering functional layer 120 overlap along the filtering direction.

[0150] The chemical filter functional layer 120 is a chemical filter layer for filtering at least one volatile organic compound; the chemical filter layer is a formaldehyde decomposition catalytic felt, and the formaldehyde decomposition catalytic felt includes a breathable support and is attached to the breathable support. formaldehyde decomposition catalyst; the thickness of the chemical filter layer is 1mm, and the air permeability is 5720m 3 / m 2 h.

[0151] The physical filter function layer is composed of a first physical filter layer that filters solid particles in the object to be filtered and a second p...

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Abstract

The invention discloses a preparation method of a filter material. The filtering material comprises a physical filtering functional layer and a chemical filtering functional layer which are overlappedfront and back along the filtering direction, wherein the physical filtering functional layer comprises a first physical filtering layer for filtering solid particles in an object to be filtered anda second physical filtering layer for filtering at least one volatile organic compound; the first physical filtering layer and the second physical filtering layer are overlapped in a manner of front and back in the filtering direction, and the second physical filtering layer comprises activated carbon. The preparation method of the filtering material comprises the following steps: (1) scattering activated carbon powder on the surface of the chemical filtering functional layer or the first physical filtering layer to form a second physical filtering layer; and (2) forming a connecting layer which is used for connecting the first physical filtering layer and the chemical filtering functional layer and is positioned at the periphery of the second physical filtering layer through glue sprayingand / or ultrasonic compounding to obtain the filtering material. The process is simple, the air purification effect can be improved, and the service life of the chemical filtering functional layer isprolonged.

Description

technical field [0001] The invention relates to the technical field of filter material preparation, in particular, to a preparation method of filter material. Background technique [0002] Pollutants in the air are mainly divided into solid pollutants and gaseous pollutants. For solid pollutants in the air (such as PM10, PM2.5) pollution, it is generally removed by physical filtration (that is, the separation of specific objects through physical means); for gas pollutants in the air (such as VOC, that is, organic gaseous substances) , generally removed by chemical filtration (that is, using the chemical properties of substances to achieve the separation of specific objects). [0003] Fine particles (such as PM2.5) in solid pollutants are more harmful to human health. In terms of removing fine particles by physical filtration, fibrous filter materials with high filtration efficiency and good air permeability (such as glass fiber, PP fiber, PET fiber, expanded PTFE fiber, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/72B01D46/00B01D46/12B01D39/16B01D53/04
CPCB01D53/8668B01D53/04B01D46/12B01D39/16B01D46/62
Inventor 高麟陈慧任德忠
Owner CHENGDU INTERMENT TECH