Filter material and use

A filter material and filter surface technology, which is applied in the direction of filtration separation, dispersed particle filtration, and dispersed particle separation, etc., can solve the problems of reduced cleaning interval of filter felt, easy breakage, high pressure loss of filter felt, and increase the pressure loss Small size, excellent dust collection efficiency, and good thermal dimensional stability

Inactive Publication Date: 2009-04-15
TORAY IND INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the publication number CN 2907835Y, glass fibers are added to the dust-facing layer (i.e. the filter surface layer) and the adhesion layer (i.e. the non-filter surface layer). Due to the poor folding resistance of the glass fiber, it is easy to break under repeated pulse cleaning. Thus affecting the service life of the filter felt; in addition, the dust layer contains ultra-fine high temperature resistant synthetic fibers and glass fibers, and the adhesion layer is a mixture of coarse fibers and glass fibers
Due to the existence of ultra-fine fibers and glass fibers, the pressure loss of the filter mat will be relatively high, and the air flo

Method used

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  • Filter material and use

Examples

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Comparison scheme
Effect test

Embodiment 1

[0052] Using PPS staple fibers with a fineness of 2.2 decitex (average fiber diameter of 14.5 μm) and a piece length of 51 mm (“Tecon” manufactured by Toray Co., Ltd.), warp yarn 20S / 2 and weft yarn 20s were obtained. It was flat-woven to obtain a PPS staple fiber plain weave fabric with a warp density of 36 threads / 2.54 cm and a weft density of 15 threads / 2.54 cm.

[0053] Using this fabric as the base fabric, use 198g / m on one side 2 The weight per unit area of ​​the laminated fiber web is 2.2 decitex (average fiber diameter 14.5 μm), PPS staple fiber with a length of 51 mm ("Tecon" S101-2.2T 51mm manufactured by Toray Co., Ltd.) and a fineness of 1.0 Dtex (average fiber diameter 9.7μm), PPS staple fiber with a length of 51mm is mixed at a weight ratio of 80:20. After the staple fiber is opened and carded, the needle density is 50 / cm 2 Obtained by needle punching, this fiber web forms the filter layer on the filter surface side. On the other side of the fabric at 198g / m 2...

Embodiment 2

[0055] As the fibers constituting the fiber web on one side of the filter surface, PPS staple fibers with a fineness of 2.2 dtex (average fiber diameter of 14.5 μm), a length of 51 mm and a length of 1.0 dtex (fiber diameter of 9.7 μm), and a length of 51 mm were divided into 70:30 The weight ratio is used in combination. As fibers constituting the fiber web on the non-filter surface side, 100 wt % of PPS staple fibers with a fineness of 2.2 decitex (average fiber diameter of 14.5 μm) and a piece length of 51 mm were used. Except for these, the filter material was obtained by the same method as Example 1. According to the JIS L 1096 standard, the tensile strength of the filter material is 780N / 5cm in the radial direction and 1530N / 5cm in the weft direction.

Embodiment 3

[0057] As the fibers constituting the fiber web on one side of the filter surface, PPS short fibers with a denier of 2.2 dtex (average fiber diameter of 14.5 μm), a length of 51 mm and a length of 51 mm of a piece of 1.0 dtex (fiber diameter of 9.7 μm) were mixed in a ratio of 60:40 Mixed use by weight ratio. As fibers constituting the fiber web on the non-filter surface side, 100 wt % of PPS staple fibers with a fineness of 2.2 decitex and a piece length of 51 mm were used. Except for these, the filter material was obtained by the same method as Example 1. According to the JIS L1096 standard, the tensile strength of the filter material is 775N / 5cm in the radial direction and 1510N / 5cm in the weft direction.

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Abstract

The invention discloses a filter material and application thereof. The filter material has a three-layer structure, namely, a filter surface layer, an unfilterable surface layer and a middle fabric reinforced layer, wherein the filter surface layer is a fiber net formed by mixing 10 to 90 weight percent of heat resistant fiber of which the average diameter is below 10 mu m, and 10 to 90 weight percent of the heat resistant fiber of which is the average diameter between 10 and 20 mu m; the unfilterable surface layer is the fiber net formed by the heat resistant fiber of which the average diameter is between 10 and 20 mu m; and the middle layer is a fabric reinforced layer. The filter material has the advantages of high dust collecting efficiency, small raise of pressure loss after the dust on the surface of the filter material is removed, and prolonged service life of the filter material because damage of the filter material caused by blowing times of compressed air is reduced due to long dust cleaning period. The filter material can be used for preparing filter bags and the like.

Description

Technical field: [0001] The invention relates to a filter material and its application. Background technique: [0002] With the continuous development of our country's society and economy and the continuous improvement of people's living standards, people's requirements for the quality of the atmospheric environment will become higher and higher. In order to control the emission of air pollutants from coal-fired power plants, protect the living and ecological environment, and implement sustainable development In 2004, my country began to implement the newly revised national pollutant emission standards, which stipulated the emission limits of air pollutants for thermal power plants in three periods, and proposed that thermal power plants should implement sulfur dioxide and soot emissions by 2005 and 2010. Emission limits, in which the lower limits of smoke and dust emission standards are close to or meet the standards of developed countries. Moreover, this year (2007) the Bag...

Claims

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Application Information

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IPC IPC(8): B01D39/16B01D46/02B32B5/26
Inventor 沈雪松李星
Owner TORAY IND INC
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