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Dust removal and waste gas decomposition double-effect filter material and preparation method thereof

A filter material and exhaust gas technology, applied in separation methods, filtration separation, chemical instruments and methods, etc., can solve the problems of reduced catalytic effect, high filter material running resistance, membrane pore blockage, etc., to achieve simple and easy process, improve decomposition Efficiency and low running resistance

Active Publication Date: 2012-06-27
南京际华三五二一环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small pores of the PTFE microporous membrane itself, the running resistance of the filter material is large, and the PTFE microporous membrane will block the pores of the membrane when there is oil in the flue gas, resulting in the failure of the filter material. Therefore, The scope of application is limited; and the catalyst powder is completely embedded in the PTFE resin, the contact between the exhaust gas and the catalyst is insufficient, and the decomposition efficiency of the exhaust gas is not ideal. The series processing process is subject to a strong opening force, which is easy to cause loss and reduce the catalytic effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The double-effect filter material for dust removal and exhaust gas decomposition of the present invention includes plain felt made of polytetrafluoroethylene fiber and polyphenylene sulfide fiber, catalyst powder attached to the interior of the plain felt, and polystyrene coated on the surface of the plain felt. Chlorofluoroethylene microporous membrane. The content of plain felt is 550g / m 2 . The catalyst powder is vanadium pentoxide, tungsten trioxide and titanium dioxide, with a total content of 500g / m 2 . The content of polytrifluorochloroethylene microporous membrane is 20g / m 2 . The total content of filter material is 1070g / m 2 .

[0021] The filter material is prepared by the following steps:

[0022] (1) Make plain felt by making PTFE fiber and polyphenylene sulfide fiber through opening and mixing→carding→laying→needling and other processes; control the content of plain felt to 550g / m 2 .

[0023] (2) Mix vanadium pentoxide, tungsten trioxide, titanium...

Embodiment 2

[0028] The double-effect filter material for dust removal and waste gas decomposition of the present invention includes a plain felt made of polytetrafluoroethylene fiber as a raw material, catalyst powder attached to the interior of the plain felt, and a polychlorotrifluoroethylene microporous membrane coated on the surface of the plain felt . The content of plain felt is 850g / m 2 . The catalyst powder is vanadium pentoxide and tungsten trioxide, the content is 800g / m 2 . The content of polytrifluorochloroethylene microporous membrane is 25g / m 2 . The total content of filter material is 1675g / m 2 .

[0029] The filter material is prepared by the following steps:

[0030] (1) The PTFE fiber is made into a plain felt through the processes of opening and mixing→carding→laying→acupuncture; control the content of the plain felt to 850g / m 2 .

[0031] (2) Mix vanadium pentoxide, tungsten trioxide and γ-(2,3-glycidoxy)propyltrimethoxysilane at a mass ratio of 5:5:0.1, add w...

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Abstract

The invention discloses a dust removal and waste gas decomposition double-effect filter material and a preparation method thereof. The filter material comprises a raw felt, catalyst powder and a coating. The filter material utilizes the raw felt as a carrier, the catalyst powder is adhered to the inside of the raw felt, and the coating is coated on the surface of the raw felt and is of a polytrifluorochloroethylene microporous film structure. The catalyst powder is in a grade of nanometer or micron and is selected from one or more of vanadium pentoxide, vanadium trioxide, tungsten trioxide, titanium dioxide and manganese dioxide. By utilizing the preparation method to prepare the filter material, the process is simple and easy to implement, and processing costs of preparation of catalyticfibers, film covering and the like are reduced. In addition, compared with a polytetrafluoroethylene microporous film, running resistance is low, and difficulties in follow-up sewing, transportation,installation and the like of the filter material are reduced simultaneously.

Description

technical field [0001] The invention relates to a double-effect filter material for dust removal and waste gas decomposition and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection worldwide, air pollution has received more and more attention, especially the control of toxic and harmful gases such as dioxin, sulfur dioxide, nitrogen oxides, etc. has also received more and more attention. Common waste gas treatment methods such as activated carbon adsorption, dry or semi-dry desulfurization, ammonia denitrification, etc., either only through simple phase-to-phase transfer, or have only a single function. In recent years, the catalytic oxidation decomposition technology has been paid more and more attention. It can decompose exhaust gas into harmless substances at a certain temperature of 160-250 °C. At present, this type of catalyst needs to be processed into a certain shape or used with supporting equ...

Claims

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Application Information

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IPC IPC(8): B01D39/14B01D53/86B32B27/02B32B27/12B32B27/18B32B27/30
Inventor 阳建军崔月慧李敏刘建祥
Owner 南京际华三五二一环保科技有限公司
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