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Method for manufacturing high-performance polyphenylene sulfide fibre dust removal felt cloth

A technology of polyphenylene sulfide fibers and manufacturing methods, applied in separation methods, chemical instruments and methods, non-woven fabrics, etc., can solve the problems of short life of filter cloth, high pressure loss, peeling, etc., and achieve thermal dimensional stability Good performance, excellent dust collection effect

Inactive Publication Date: 2008-05-14
SICHUAN DEYANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the air permeability in the initial state is low, and the initial pressure loss becomes high, which shortens the life of the filter cloth, and there is a problem that the exhaust gas treatment capacity is greatly reduced.
Furthermore, after making a felt with a heat-resistant base material, there are still several processing steps such as laminating and interlacing the fiber web composed of polytetrafluoroethylene short chemical fibers, which increases the processing cost and the process flow. become redundant
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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] It adopts the product manufacturing process of PPS short fiber processing → feeding, → carding → upper base cloth → needle punching → empty punching → high temperature hot pressing setting → finishing and forming. Sodium sulfide and p-dichlorobenzene are used as raw materials to synthesize polyphenylene sulfide resin in a solution with additives; the resin is spun into fiber precursors by melt spinning; the fiber precursors are subjected to thermal drawing and setting treatment Finished fiber; the fineness of polyphenylene sulfide fiber after thermal drawing treatment is generally 2.8cN / dtex, and then cut into short fibers with a length of 8-80mm. 2.8cN / dtex polyphenylene sulfide fibers, 15% polytetrafluoroethylene fibers, and 25% aluminum silicate ceramic fibers are woven into base fabrics on ordinary looms, and then spun with PPS. The short fibers of polyphenylene sulfide are treated with oil agent, and then combed into a fiber net through an opener, and then the mate...

Embodiment 2

[0018] Using the manufacturing process of Example 1, except that the polytetrafluoroethylene in the base cloth is increased to 20%, and the polyphenylene sulfide fiber is 55%, the amount of aluminum silicate ceramic fiber remains unchanged. High-performance polyphenylene sulfide fiber dust removal felt cloth products will also be obtained.

[0019] This high-performance polyphenylene sulfide fiber dust removal felt cloth has good thermal dimensional stability at a temperature of 200 °C, chemical resistance, wear resistance, excellent dust collection and removal effect, and small pressure drop. After repeated use, its dust removal effect has not changed much.

Embodiment 3

[0021] Using the manufacturing process of Example 1, in addition to increasing the polytetrafluoroethylene in the base cloth to 30%, polyphenylene sulfide and polycrystalline alumina ceramic fibers are respectively used by 50% and 20%, and high-performance polyphenylene sulfide will also be obtained. Ether fiber dust removal felt cloth products.

[0022] This high-performance polyphenylene sulfide fiber dust removal felt cloth has good thermal dimensional stability at a temperature of 200 °C, chemical resistance, wear resistance, excellent dust collection and removal effect, and small pressure drop. After repeated use, its dust removal effect has not changed much.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention discloses a manufacturing method of a high performance polyphenylene sulfide (PPS) fibre dedusting felt, adopting the steps that: treatment of short fibre, material feeding, grooming, base cloth setting, needling, idle needling, high temperature thermal compression molding and finishing and molding technique. PPS short fibre with a length ranging from 8 to 130mm is treated by spinning oil and is groomed into a fibre net; the fibre net is needled by needling machine on a base cloth woven by 15 to 25 percent of poly (tetrafluoethylene), 20 to 30 percent of ceramics fibre and about 60 percent of PPS filament, then idle needled and high temperature thermal compression molded, and finally finished and produced into high performance PPS fibre dedusting felt. Since 20 to 30 percent of ceramics fibre and 15 to 30 percent of poly (tetrafluethylene) fibre are added, the base cloth has good thermal size stability in high performance, chemical resistance, abrasion resistance, and excellent dust collecting and elimination effect, which is suitable for acted as professional filtration material in the thermal power generation plant, the rubbish burning furnace and the metallurgy industry.

Description

Technical field [0001] The invention belongs to the field of special functional cloth production. Background technique [0002] The filter material of high-performance polyphenylene sulfide fiber dust-removing felt cloth used for air purification is used for internal filtration and some for surface filtration. The filter material in the dust collector is used for surface filtration. Surface filtration is to collect dust on the surface of the filter material, and form a dust layer on the surface of the filter material. The dust is gradually collected through the dust layer. When the dust layer reaches a certain thickness, the dust layer is removed from the surface of the filter material by air pressure. A dust layer is formed on the surface of the filter material, and after such repeated operations, the air is filtered to meet the air emission standard. If these filter materials are used in garbage incinerators, the high-temperature exhaust gas or the chemical substances con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N7/00D04H1/46B01D39/14
Inventor 代晓薇李勇余大海
Owner SICHUAN DEYANG CHEM
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