CN201192604Y

CN201192604Y - Filter material of environment friendly dust collector

Info

Publication number: CN201192604Y
Application number: CNU200820101475XU
Authority: CN
Inventors: 洪和平; 邱新标
Original assignee: Xiamen Meiyuda Environmental Protection Science & Technology Co Ltd
Current assignee: Xiamen Meiyuda Environmental Protection Science & Technology Co Ltd
Priority date: 2008-02-19
Filing date: 2008-02-19
Publication date: 2009-02-11
Anticipated expiration: 2018-02-19

Abstract

The utility model relates to an environment-friendly dust catcher filtering material. A polyfluortetraethylene (PTFE) protective layer is sintered on the surface of each filament in a glass fiber cloth. Through the sintering process flow, the surface of each filament in the glass fiber cloth is coated with a compact and solid polyfluortetraethylene (PTFE) protective layer. Through the high temperature hot pressing process, the polyfluortetraethylene (PTFE) protective layer and a swelling PTFE microporous membrane can be molten and combined under the conditions of high temperature and hot pressing, so that the glass fiber cloth, the PTFE protective layer and the PTFE microporous membrane can be better connected together, so as to form a novel PTFE glass fiber sintering coated filtering material with high solidness, high temperature resistance and corrosion resistance. The good acid and alkaline resistance, high temperature resistance, corrosion resistance, abrasion resistance, hydrolyzing resistance, warping strength, break resistance, water resistance, and the like, of the PTFE glass fiber sintering coated filtering material are greatly improved. The surface of the filtering material is smooth and water-repellent, so that dust can not be attached to the surface of the filtering material. The filtering material has good dust peeling property, can easily clean soot, so that the service life of the filtering material is prolonged by one time compared with the prior product.

Description

A kind of environmental protection deduster filter material

Technical field

The utility model is about a kind of environmental protection deduster filter material.

Background technology

At incinerator, iron and steel, cement, chemical industry, the power plant, carbon black, metallurgy, coal-burning boiler, gypsum industry, the gas of industries such as lime industry discharge all needs to carry out dust removal and filtration and can discharge, and reduces pollution to atmosphere with this.And now dust removal and filtration materials that adopt are that glass fibre is made more, because of glass fibre has high temperature resistant, characteristics such as intensity is high, good rigidity.Than easy fracture, promptly its pliability, fracture resistance are very poor, and be also relatively poor to the corrosion resistance of a little chemical substances such as fluoride, shorter to the service life that makes this filter cloth when but the filter cloth that glass fibre is made was rolled over.

The utility model content

The industrial fumes that the purpose of this utility model provides a kind of pliability, fold resistance is good and be applicable to high temperature, high humidity, high viscosity dust industry or have Acidity of Aikalinity, aggressive chemistry gas purify and the deduster filter material of the occasion that other operating mode is abominable.

For achieving the above object, solution of the present utility model is: a kind of environmental protection deduster filter material, and wherein the monofilament surface sintering at the glass base cloth has the polytetrafluoroethylene (PTFE) protective layer; Be laminated with the expanded polytetrafluoroethylmicroporous microporous membrane of one deck again.

After adopting such scheme; because the utility model is to utilize PTFE (polytetrafluoroethylene (PTFE)) macromolecule raw material and other chemical assistant monofilament surface in glass fibers cloth to form protective layer; adopt the sintering process flow process; every monofilament surface all superscribes one deck densification in glass cloth; firm PTFE protective layer; again by the elevated temperature heat compression technology; can the generation fusion be laminated with under the high temperature hot pressing condition with expanded PTFE microporous membrane; just can be with glass fabric; PTFE protective layer and PTFE microporous membrane link together with being good at; form a kind of firmly high novel high temperature resistant; corrosion resistant PTFE glass sintering overlay film filter material; give filter material fine resistance to acids and bases; corrosion-resistant; high temperature resistant; the antifriction scrape along is warping strength; performances such as anti-folding all improve greatly; and smooth surface; hydrophobic; dust all can't stick to filter material surface; dust peeling property is good; the filtrate easy-to-clean ash; because the PTFE microporous membrane contains micro-pore; the porosity height; can reach filter efficiency more than 99.99% to fine dust; can be enhanced about more than once than existing product its service life, be applicable to high temperature; high humidity; high viscosity dust industry or have Acidity of Aikalinity; the industrial fumes of aggressive chemistry gas purify and the abominable occasion of other operating mode.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the partial enlarged drawing of Fig. 1.

The specific embodiment

As Fig. 1; shown in 2; the utility model dust removal and filtration filter material is to adopt glass cloth as base material 1; adopt the sintering process flow process; every monofilament surface in glass cloth all superscribes one deck densification; firm polytetrafluoroethylene (PTFE) protective layer 2; high temperature hot pressing one deck has the polytetrafluoroethylene (PTFE) diaphragm 3 of micropore again on glass base cloth polytetrafluoroethylene (PTFE) protective layer 2; formation has the polytetrafluoroethylene (PTFE) glass sintering filtrate of micro porous filtration; further improve the filtrate resistance to acids and bases; corrosion-resistant; rub resistance; water proofing property; hydrolysis; performances such as warping strength and dust peeling property; and the PTFE microporous membrane contains micro-pore; the porosity height; can reach filter efficiency more than 99.99% to ultra tiny dust, can be enhanced about more than once than existing product service life.

The characteristic of this kind filtrate:

1. high temperature resistant: the temperature tolerance of this kind filtrate mainly is by glass and polytetrafluoroethylene (PTFE) itself Heat resistance determine, 260 ℃ of its long-term serviceability temperatures, short-term and moment can reach 300 ℃, and dimensional stability to heating in house＜0.5%.

2. good acid-proof alkaline is arranged: it has for Acidity of Aikalinity and most organic matter Extraordinary repellence, hydrogen fluoride is not afraid of yet, and this high temperature resistant, high-performance special filtrate is to acid The repellence of the corrosive gas such as alkalescence all obviously improves than common glass fiber filter material.

3. good wearability and endurance character, tensile strength height are arranged: this kind filtrate no matter Be its wearability and fatigue durability, or its tensile strength all is better than common glass fiber filter material.

4. have excellent hydrophobic property: this filter material surface is smooth, and is hydrophobic, and any dust all can't stick to filter material surface and easy-to-clean ash, and it is not afraid of tar, steam; Dew point is not afraid of, and freezes not to be afraid of yet, so the deduster outside does not need insulation, is applicable to contain the Acidity of Aikalinity composition, and the exhaust gas dust that moisture fluctuation is big filters.

5. thermal dimensional stability is good: 300 ℃, thermal contraction is less than 0.5%, and this characteristic has determined the security that he at high temperature uses.

6. filter the wind height: because on the filtrate working face, use the PTFE skin covering of the surface of microporous foam, make this kind filtrate easy-to-clean ash, and it has good rub resistance and fatigue durability, these characteristics have determined it to have higher filtration velocity, also determined its competent purge mode that anti-blow cleaning dust is arranged, rotary counter-blowing wind deashing, mechanical oscillation deashing, pulse dust cleaning etc.

This kind filtrate is mainly used in the following aspects:

1. the gas cleaning of incinerator high temperature, high viscosity dust.The processing of particularly discarded medical supplies (as one-shot injector, rubber gloves etc.) and house refuse can solve high temperature and burn difficult problems such as bag, high viscosity dust paste bag, chemical gas corrosion cloth bag.

2. the gas cleaning of smelting iron and steel factory blast furnace gas.Mainly can solve high temperature, high humidity, the following chemical gas corrosion cloth bag difficult problems such as bag and high temperature sulfur-bearing of sticking with paste of dew point.

3. the gas cleaning of carbon black, coking furnace.Mainly can solve the deashing difficulty that high temperature, high viscosity dust cause, the dew point oxidation reaction after the blowing out makes difficult problems such as the early stage embrittlement of filtrate.

4. the high temperature of industries such as chemical industry, metallurgy, cement, the paste bag that the high viscosity dust causes, equipment running resistance height, difficult problems such as the early stage embrittlement breakage of filtrate.

5. the flue gas dry desulfurizing of coal burning boiler of power station is compared with common glass fibre bag, cannot not have stickingly bag, easy-to-clean ash, and the equipment running resistance is low, advantages such as long service life.

Main application fields: incinerator, iron and steel, cement, chemical industry, power plant, carbon black, metallurgy, coal-burning boiler, gypsum industry, industries such as lime industry.

Claims

1. environmental protection deduster filter material, it is characterized in that: the monofilament surface sintering at the glass base cloth has the polytetrafluoroethylene (PTFE) protective layer; Be laminated with the expanded polytetrafluoroethylmicroporous microporous membrane of one deck again.