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Dual-effect filter material for removing dust and decomposing dioxin and preparation method thereof

A filter material and dioxin technology, applied in the field of dust removal and dioxin decomposition double-effect filter material and its preparation, to achieve low running resistance, prevent breakage and loss, and improve catalytic efficiency

Inactive Publication Date: 2008-11-19
NANJING JIHUA 3521 SPECIAL EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems existing in the existing filter materials, the object of the present invention is to provide a double-effect filter material for dust removal and dioxin decomposition and its preparation method

Method used

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  • Dual-effect filter material for removing dust and decomposing dioxin and preparation method thereof
  • Dual-effect filter material for removing dust and decomposing dioxin and preparation method thereof
  • Dual-effect filter material for removing dust and decomposing dioxin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A double-effect filter material for dust removal and dioxin decomposition, such as figure 1 As shown, it includes a dust-facing surface 1, a supporting catalytic layer 6, a base cloth layer 4 and a supporting layer 5, and the dust-facing surface 1 is covered on one side of the supporting catalytic layer 6; one side of the base cloth layer 4 is placed on the supporting catalytic layer The other side of 6 and the other side of the base cloth layer 4 are placed on the supporting layer 5; the supporting catalytic layer 6 is composed of a catalytic layer 61 superimposed on a catalytic supporting layer 62. The dust-facing surface 1 is covered on the catalytic layer 61 . The base cloth layer 4 is placed on the catalytic support layer 62 .

[0039] The preparation method of the above-mentioned double-effect filter material for dust removal and dioxin decomposition comprises the following steps:

[0040] a, preparation of support layer and catalytic support layer

[0041] The p...

Embodiment 2

[0052] Another dust-removing and dioxin-decomposing double-effect filter material, the support layer is replaced by a support catalyst layer. Such as figure 2 As shown, it includes a dust-facing surface 1 , a supporting catalytic layer 7 , a supporting catalytic layer 8 and a base cloth layer 4 . The supporting catalytic layer 7 and the supporting catalytic layer 8 are respectively located on both sides of the base cloth layer 4 . The supporting catalytic layer 7 is composed of a catalytic layer 71 superimposed on a catalytic supporting layer 72 , and the supporting catalytic layer 8 is composed of a catalytic layer 81 superimposed and covering on a catalytic supporting layer 82 . The dust-facing surface 1 is covered on the catalytic layer 71 supporting the catalytic layer 7 .

[0053] The preparation method of the above-mentioned double-effect filter material for dust removal and dioxin decomposition comprises the following steps:

[0054] a. Preparation of catalytic supp...

Embodiment 3

[0066] Another kind of dedusting and dioxin decomposition double-effect filter material, structure is identical with embodiment 2, as figure 2 shown.

[0067] In the preparation method, after acupuncture, the filter material is impregnated with polytetrafluoroethylene emulsion and baked at a temperature of 260° C. for 10 minutes, and the rest of the processing is the same as in Example 2.

[0068] The dust removal and dioxin decomposition double-effect filter material with a gram weight of 1750 g / m2 obtained by the above method has a removal rate of 99% for dioxins at 200°C, and a removal efficiency of 99.9% for particles above 5 microns. The resistance is 1500Pa.

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Abstract

The invention relates to a dual-purpose filter material of dust removal and dioxin decomposition and a preparation method thereof, the filter material comprises a dust-facing surface, a supporting catalyst layer, a basic cloth layer and a supporting layer, the dust-facing surface is arranged on one side of the supporting catalyst layer; one surface of the basic cloth layer is arranged on the other side of the supporting catalyst layer, and the other surface of the basic cloth layer is arranged on the supporting layer; and the supporting catalyst layer is constituted by overlapping and covering a catalyst layer on a catalyst supporting layer. The preparation method has the steps of using the air flow of a polytetrafluoroethylene fiber containing a dioxin decomposition catalyst to form a net, taking the polytetrafluoroethylene fiber as the dust-facing surface, carrying out layer-overlapping of a plurality of structures, and using acupuncture, post-treatment and other techniques for processing. The process of the invention has simple and easy operation, low processing cost and small damage on the fiber, thereby being widely applicable to the dust removal and the dioxin decomposition of high-temperature tail gas.

Description

technical field [0001] The invention relates to a filter material, in particular to a dust removal and dioxin decomposition double-effect filter material and a preparation method thereof. Background technique [0002] With the rapid development of modern industrialization in various countries in the world, air pollution has become an increasingly serious global problem, and countries all over the world attach great importance to the emission of dioxins. Activated carbon adsorption is a common method for treating dioxins at home and abroad. Although it has a good removal efficiency, it will reach adsorption saturation if activated carbon is used for a long time. Activated carbon with saturated adsorption is often landfilled. This method actually only transfers the gaseous dioxins to the solid phase. After landfilling, it is very likely to cause secondary pollution to soil and groundwater sources. In recent years, the catalyst oxidation decomposition technology has been paid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B01D53/86B32B5/00B32B7/02
Inventor 夏前军于淼涵刘建祥郭玉海来侃孙润军
Owner NANJING JIHUA 3521 SPECIAL EQUIP
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