Preparation method of polyphenylene sulfide composite filter material filter bag

A composite filter material and polyphenylene sulfide technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of affecting the service life of the filter bag, leaking and accumulating ash in the side seam, limiting the discharge accuracy of the filter bag, etc. , to achieve the effect of improving pinhole ash leakage, good temperature resistance and long service life

Inactive Publication Date: 2015-12-02
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the further improvement of the national environmental protection standards for dust emission concentration requirements, the dust removal efficiency of the bag filter also needs to be further improved. The concentration is controlled below 10 mg, which is a challenge for the selection of filter material and the processing of filter bags
The traditional filter b...

Method used

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  • Preparation method of polyphenylene sulfide composite filter material filter bag
  • Preparation method of polyphenylene sulfide composite filter material filter bag
  • Preparation method of polyphenylene sulfide composite filter material filter bag

Examples

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specific Embodiment 1

[0024] The preparation method of a kind of PPS composite filter material filter bag provided by the present embodiment comprises the following steps:

[0025] Step 1. Select polytetrafluoroethylene filter cloth with a weight of 100 per square meter as the base cloth, select 1.0-1.5 decitex ultrafine polyphenylene sulfide fibers to lay the surface layer, and select 1.0 decitex ultrafine polyphenylene sulfide fibers Fiber and common polyphenylene sulfide fiber of 2.0 dtex are mixed to lay the bottom layer; and the mass ratio of superfine polyphenylene sulfide fiber and common polyphenylene sulfide fiber in the bottom layer is 1:2, and then through needle punching or water The spines secure the top layer to the upper surface of the base fabric while securing the bottom layer to the lower surface of the base fabric.

[0026] Step 2: Cut the high-temperature-resistant, acid-alkali-resistant PTFE composite tape into specifications with a width of 2 to 5 cm according to the actual si...

specific Embodiment 2

[0032] The preparation method of a kind of PPS composite filter material filter bag provided by the present embodiment comprises the following steps:

[0033] Step 1: Select the polytetrafluoroethylene filter cloth with a weight of 130 per square meter as the base cloth, select 1.33 decitex ultrafine polyphenylene sulfide fibers to lay the surface layer, select 1.33 decitex ultrafine polyphenylene sulfide fibers and 2.2 decitex ordinary polyphenylene sulfide fibers are mixed to lay the bottom layer; and the mass ratio of ultrafine polyphenylene sulfide fibers and ordinary polyphenylene sulfide fibers in the bottom layer is 3:7, and then the the top layer is secured to the upper surface of the base fabric while securing the bottom layer to the lower surface of the base fabric;

[0034] Step 2: Cut the high-temperature-resistant, acid-alkali-resistant PTFE composite tape into specifications with a width of 2 to 5 cm according to the actual size of the lap seam of the PPS composi...

specific Embodiment 3

[0040] The preparation method of a kind of PPS composite filter material filter bag provided by the present embodiment comprises the following steps:

[0041] Step 1. Select the polytetrafluoroethylene filter cloth with a weight of 200 per square meter as the base cloth, select 1.5 decitex ultrafine polyphenylene sulfide fibers to lay the surface layer, select 1.5 decitex ultrafine polyphenylene sulfide fibers and 2.5 decitex ordinary polyphenylene sulfide fibers are mixed to lay the bottom layer; and the mass ratio of ultrafine polyphenylene sulfide fibers and ordinary polyphenylene sulfide fibers in the bottom layer is 1:3, and then the The top layer is secured to the upper surface of the base fabric while the bottom layer is secured to the lower surface of the base fabric.

[0042]Step 2: Cut the high-temperature-resistant, acid-alkali-resistant PTFE composite tape into specifications with a width of 2 to 5 cm according to the actual size of the lap seam of the PPS composit...

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Abstract

The invention discloses a preparation method of a polyphenylene sulfide composite filter material filter bag. The method includes the steps of: 1. preparation of a polyphenylene sulfide composite filter material: selecting a polytetrafluoroethylene filter cloth of 100-200 grams per square meter as the base cloth, selecting 1.0-1.5 dtex superfine polyphenylene sulfide fiber to pave a surface layer, and selecting 1.0-1.5 dtex superfine polyphenylene sulfide fiber and 2.0-2.5 dtex ordinary polyphenylene sulfide fiber to pave a bottom layer mixedly; 2. preparation of the polyphenylene sulfide composite filter material filter bag: blanching a polytetrafluoroethylene composite adhesive tape evenly to a lapped seam line of the polyphenylene sulfide composite filter material filter bag by a blancher to completely cover needle eyes and lap side seam. The polytetrafluoroethylene composite adhesive tape includes a polytetrafluoroethylene substrate and a hot melt adhesive layer, and the hot melt adhesive layer is ethylene-vinyl acetate copolymer holt melt adhesive. The method provided by the invention can improve the filtering effect and service life of the PPS composite filter material filter bag to meet the requirements of practical use.

Description

technical field [0001] The invention relates to a preparation method of a polyphenylene sulfide composite filter bag, belonging to the technical field of industrial environmental protection dust removal filter bag product processing. Background technique [0002] my country is a big coal-burning country, and coal will emit a large amount of toxic gases and dust and other pollutants during the combustion process. At present, the main equipment for controlling the emission of combustion dust particles in coal-fired thermal power plants in my country has gradually changed from the simple electric precipitator in the past to the bag filter or the electric bag composite filter with the filter bag as the core, so as to meet the requirements of ultra-low emissions. At present, the most commonly used filter bags in power plants are PPS (polyphenylene sulfide) composite filter bags. Under the conditions, and can improve the service temperature and oxidation resistance of the filter ...

Claims

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Application Information

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IPC IPC(8): B01D39/16
Inventor 朱朋飞刘江峰徐辉周冠辰
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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