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Filter material and use

A filter material and filter surface technology, applied in the fields of filtration and separation, chemical instruments and methods, separation methods, etc., can solve the problems of high use cost and high price, and achieve the effect of prolonging service life, reducing damage and small pressure loss

Inactive Publication Date: 2008-12-17
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Filter materials using PPS, PTFE and other high-performance fibers as raw materials (such as pure PPS filter materials, ePTFE membrane filter materials) have excellent filtration performance, but due to their high price and high cost of use, they will affect some small-scale and insufficient funds. The new construction or reconstruction of the dust removal system in the small thermal power plant has been carried out smoothly

Method used

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  • Filter material and use
  • Filter material and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 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 30 threads / 2.54 cm and a weft density of 14 threads / 2.54 cm.

[0054] Using this fabric as the base fabric, use 198g / m on one side 2 The weight per unit area of ​​the laminated fiber web, the fiber web is a fineness of 2.2 decitex (average fiber diameter of 14.5 μm), a length of 51mm PPS short fiber (Toray Co., Ltd. "Tecon" S101-2.2T 51mm) and a fineness of 0.75 dtex (fiber diameter 6μm) and glass fibers with a length of 50 mm are mixed at a weight ratio of 80:20. 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 The weight per unit area is laminated with the following fiber web, whi...

Embodiment 2

[0056] As the fibers constituting the fibrous web on one side of the filter surface, PPS staple fibers with a fineness of 2.2 dtex (14.5 μm in average fiber diameter) and 51 mm in length and 0.75 dtex (6 μm in fiber diameter) and glass fibers with a length of 50 mm in 70: 30 weight ratio mixed use. As fibers constituting the fiber web on the non-filter surface side, 100 wt % of PPS staple fibers with a fineness of 7.8 decitex (average fiber diameter of 27 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.

Embodiment 3

[0058] As the fibers constituting the fibrous web on one side of the filter surface, PPS short fibers with a denier of 2.2 decitex (14.5 μm in average fiber diameter) and 51 mm in length and 0.75 dtex (6 μm in fiber diameter) and glass fibers with a length of 50 mm in 60: 40 weight ratio mixed use. As fibers constituting the fiber web on the non-filter surface side, 100 wt % of PPS staple fibers with a fineness of 7.8 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.

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Abstract

The invention discloses a filter material and the application thereof. The filter material has a three-layer structure including a filter layer, a non-filter layer and an intermediate fabric strengthened layer, wherein, the filter layer is a fibre net which consists of 10wt percent to 90wt percent of glass fiber with the average diameter of being smaller than 10microns and 90wt percent to 10wt percent of heat resistant fibre with the average diameter of 10 microns to 20microns, the non-filter layer is a fibre net which consists of heat resistant fibre with the average diameter of 20microns to 200microns, and the intermediate layer is the fibre strengthened layer. The filter material has high dust trapping efficiency; the increase of the pressure loss after the removal of dusts from the surface of the filter material is low, and since that the increase of the dust removal period reduces the damage to the filter material caused by the excessive blowing by compressed air, the service life of the filter material is prolonged and the cost is reduced.

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. [0003] The implementation of the...

Claims

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Application Information

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IPC IPC(8): B01D39/08
Inventor 沈雪松李星兰春艳
Owner TORAY FIBER RES INST(CHINA) CO LTD
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