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Multilayer composite felt for filtration

A multi-layer composite and filter layer technology, applied in the direction of filtration separation, membrane filter, dispersed particle filtration, etc., can solve the problems of limited acid and alkali resistance, and achieve excellent heat insulation performance, excellent chemical stability, and low thermal conductivity Effect

Inactive Publication Date: 2018-03-02
宿迁空天新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, for some harsh environments with high temperature and strong acidity and alkalinity, the filter materials in the above patents have high temperature resistance and limited acid and alkali resistance.

Method used

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  • Multilayer composite felt for filtration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, a multi-layer composite felt for filtering includes a base cloth, a first filter layer and a second filter layer arranged in sequence. The base cloth material is made of polyphenylene sulfide fiber and glass fiber. The material is glass fiber composite felt with different fiber diameters, and the second filter layer is made of superfine glass fiber and polytetrafluoroethylene fiber composite felt.

[0019] Polyphenylene sulfide fibers and glass fibers are mixed at a mass ratio of 1:5 and then woven into warp or weft yarns, located in the outermost layer, with a thickness of 1.00 mm and a glass fiber diameter of 20 μm.

[0020] The glass fiber composite mat is made by mixing glass fibers with a diameter of 2 μm and 30 μm at a mass ratio of 1:15, and placed on the upper surface layer of the base cloth with a thickness of 6 mm.

[0021] Ultrafine glass fiber and polytetrafluoroethylene fiber composite mat are mixed according to the mass ratio of...

Embodiment 2

[0024] Such as figure 1 As shown, a multi-layer composite felt for filtering includes a base cloth, a first filter layer and a second filter layer arranged in sequence. The base cloth material is made of polyphenylene sulfide fiber and glass fiber. The material is glass fiber composite felt with different fiber diameters, and the second filter layer is made of superfine glass fiber and polytetrafluoroethylene fiber composite felt.

[0025] Polyphenylene sulfide fibers and glass fibers are mixed at a mass ratio of 1:4 and then woven into warp or weft yarns, located in the outermost layer, with a thickness of 1.50 mm and a glass fiber diameter of 10 μm.

[0026] Glass fiber composite mats with different fiber diameters are made by mixing glass fibers with a diameter of 4 μm and 25 μm at a mass ratio of 1:10, and placed on the upper surface layer of the base cloth with a thickness of 8 mm.

[0027] Superfine glass fiber and polytetrafluoroethylene fiber composite mat are mixed a...

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Abstract

The invention discloses a multilayer composite felt for filtration. The multilayer composite felt for filtration includes a base cloth, a first filter layer and a second filter layer which are arranged in sequence, the base cloth is obtained through hybrid braiding of polyphenylene sulfide fibers and glass fibers and is positioned at the outermost layer, the first filter layer is made of a composite felt of glass fibers with the diameter being 0.5-3 [mu]m and glass fibers with the diameter being 20-50 [mu]m and is placed on the upper surface layer of the base cloth, and the second filter layeris made of an ultrafine glass fiber and polytetrafluoroethylene fiber composite felt and is placed on the upper surface layer of the first filter layer. The multilayer composite felt for filtration fully performs the respective performance advantages of the glass fibers, polytetrafluoroethylene and polyphenylene sulfide fibers, covers the mutual shortages, and has very good comprehensive effectsdue to performance synergism, so a novel filtering material having excellent high temperature resistance, excellent chemical corrosion resistance, good mechanical performances and excellent wear resistance is obtained.

Description

technical field [0001] The invention relates to a filtering material, in particular to a multilayer composite material for filtering. Background technique [0002] Glass fiber filter material is widely used in the field of high temperature filter material because of its high temperature resistance, strong corrosion resistance and good dimensional stability. It is especially popular in the recovery of flue gas in the high temperature fields of cement, metallurgy, carbon black and coal-fired boiler industries. In order to meet the needs of collecting high-temperature flue gas fine dust and recycling, glass fiber fabrics have also evolved from two-dimensional structures to three-dimensional structures, but both two-dimensional and three-dimensional glass fiber filter materials have poor cleaning performance, high running resistance, and use Short life and other limitations, especially the recovery rate of fine dust below 1 micron is not high. As the country continues to incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D46/54
CPCB01D39/14B01D46/0001B01D46/546B01D2239/0216B01D2239/1283B01D2273/20B01D2275/10
Inventor 胡雅其他发明人请求不公开姓名
Owner 宿迁空天新材料有限公司
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