Filter medium

A filter material and aggregate technology, applied in the fields of filtration separation, climate change adaptation, climate sustainability, etc., can solve problems such as peeling, and achieve the effects of less pressure loss rise, uniform texture, and excellent thermal dimensional stability

Inactive Publication Date: 2006-05-03
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the fiber web layer composed of laminated polytetrafluoroethylene short chemical fibers has the problem of peeling off due to impact when used as a bag filter.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] Using PPS staple fiber with a fineness of 3.0 dtex (fiber diameter 17μm) and a length of 76mm (Toray Co., Ltd. "Tolucon (R)" S101-3.0T76mm), a single yarn count of 20s and a number of twisted yarns were obtained. Short fiber yarn (total fineness 600 dtex). It was woven flat to obtain a PPS staple fiber plain weave fabric with a warp density of 26 strands / 2.54 cm and a weft density of 18 strands / 2.54 cm. Use the fabric as the bone material, with 194g / m on one side 2 The weight per unit area of ​​the laminated fiber web, the fiber web is 2.2 dtex (fiber diameter 14.5μm), 51mm length of PPS staple fiber (Toray Co., Ltd. "Torucon (R)" S101-2.2T51mm) and a fineness of 1.0 Decitex (fiber diameter 9.7μm), PPS staple fiber with a length of 51mm (Toray Co., Ltd. "Tolucon (R)" S101-1.0T51mm) blended at a weight ratio of 50: 50 to open cotton, After carding, the needle density is 50 needles / cm 2 Obtained by fake needle punching. This fiber web forms a filter layer on the air inflow si...

Embodiment 2

[0129] As the fibers constituting the fiber web on the air inflow side, PPS short fibers with a fineness of 1.0 dtex (fiber diameter of 9.7 μm) and a pith length of 51 mm and a fineness of 2.2 dtex (fiber diameter of 14.5 μm) were combined at a ratio of 30:30:40. ), PPS staple fiber with a length of 51mm, and PPS staple fiber with a fineness of 7.8 dtex (fiber diameter 27.2μm) and a length of 51mm are mixed. Furthermore, as the fibers constituting the fiber web on the side of the air discharge surface, PPS staple fibers with a fineness of 2.2 dtex and a length of 51 mm and PPS staple fibers with a fineness of 7.8 dtex and a length of 51 mm were mixed in a ratio of 50:50. . Except for these, the same method as in Example 1 was used to obtain a filter material. The performance of the obtained filter material is shown in Table 1 and Figure 4 , 5 in.

Embodiment 3

[0131] Except for the fibers that constitute the fiber web on the side of the air inflow surface, the PPS short fibers with a fineness of 1.0 dtex (fiber diameter of 9.7 μm) and a bundle length of 51 mm and a fineness of 2.2 dtex (fiber diameter of 14.5 μm) are combined at a ratio of 20:80 The filter material was obtained by the same method as in Example 1, except that PPS short fibers with a length of 51 mm were mixed and used. The performance of the obtained filter material is shown in Table 1 and Figure 4 , 5 in.

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Abstract

A filter material containing polyphenylene sulfide fiber satisfies the following characteristics (1) and (2), thereby providing a filter material with excellent dust collection efficiency and high mechanical strength and a composition thereof The bag filter, (1) contains at least 2 layers of fiber mesh, the fiber mesh on the air inflow side contains 50wt% or more heat-resistant fibers with a fiber diameter of less than or equal to 15 μm, and the fiber on the air discharge side The net contains 50wt% or more of heat-resistant fibers with a fiber diameter greater than or equal to 20 μm; (2) contains a fiber net, which contains polyphenylene sulfide short fibers with a fineness in the range of 1 to 3 decitex and a fineness in the range of Short fibers of fluorine-based fibers in the range of 2 to 4 dtex.

Description

Technical field [0001] The present invention relates to filter materials with the function of capturing and removing pollutants in the air, such as dust, to purify the air. The filter material of the present invention is particularly suitable for use as a dust-collecting filter cloth for filtering high-temperature exhaust gases discharged from garbage incinerators, coal-fired boilers, metal smelting furnaces, etc., and bag filters sewn with the filter cloth. Background technique [0002] The filter materials used to purify the air include internal filter materials and surface filter materials. Dust collectors use surface filter materials. The so-called surface filtration is to capture dust on the surface of the filter material. A dust layer is formed on the surface of the filter material. The dust is gradually collected through this dust layer. When the dust layer reaches a certain thickness, the dust layer is removed from the surface of the filter material with the help of ...

Claims

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Application Information

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IPC IPC(8): B01D39/16
CPCY02A50/2351
Inventor 山田贤孝长濑元树
Owner TORAY IND INC
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