CN101804273A - Specific composite filter material for coal-fired power plant electric bag integration project - Google Patents
Specific composite filter material for coal-fired power plant electric bag integration project Download PDFInfo
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- CN101804273A CN101804273A CN 201010152295 CN201010152295A CN101804273A CN 101804273 A CN101804273 A CN 101804273A CN 201010152295 CN201010152295 CN 201010152295 CN 201010152295 A CN201010152295 A CN 201010152295A CN 101804273 A CN101804273 A CN 101804273A
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Abstract
The invention discloses a specific composite filter material for a coal-fired power plant electric bag integration project; the composite filter material comprises base cloth, a dust facing surface and a bottom layer; the dust facing surface is arranged on the upper surface of the base cloth; the bottom layer is arranged on the lower surface of the base cloth; the dust facing surface is mixedly blended from PTFE fibers and PPS fibers, wherein the weight proportion of the PTFE fibers is 30 to 70 percent; the base cloth is interwoven from 100 percent PTFE long filaments in the longitudinal and latitude directions; and the bottom layer is mixedly blended from the PTFE fibers and the PPS fibers, wherein the weight proportion of the PTFE fibers is 30 to 70 percent. The fibers tangle through an acupuncture and spunlace composite process to form a plain blanket which is soaked into chemical solvent, so as to further improve the corrosion resistance and chemical performance resistance. The specific composite filter material for the coal-fired power plant electric bag integration project has smooth surface, improves the dust removing capability, reduces the operation resistance of equipment, prolongs the service life, can ensure the use for 35000h in the electric bag integration project, and is applicable to the coal-fired power plant electric bag integration project.
Description
Technical field
The present invention relates to a kind of filtering material, specifically a kind of specific composite filter material for coal-fired power plant electric bag integration project.
Background technology
At present, in coal-fired plant flue gas bag-type dusting field, the PPS needle punched filter material is because heat resistance is good, bearing temperature is 140-190 ℃, have strong acid and alkali resistance corrosivity and be widely used, but its maximum shortcoming is that antioxidant anticorrosive is relatively poor, has limited its application in electric bag integration project.
For the electric bag integration project of coal-burning power plant, adopt electric precipitation and bag-type dusting to combine, corona discharge can produce ozone, ozone is very unstable, under high temperature and certain humidity easily and other composition in the flue gas react rapidly, particularly with NO, SO
2Reaction generates SO
3, NO
2, SO
3, NO
2Be the aggressivity oxidant, the PPS filtrate is had very strong corrosivity.100% PPS filtrate can not reach service life because of chemical attack causes powerful decline acutely.And 100%PTFE (polytetrafluoroethylene (PTFE)) filtrate can satisfy this special working condition requirement on performance, but it costs an arm and a leg, and is unfavorable for large-scale popularization.
Summary of the invention
In order to overcome the problem that composite filtering material exists in the coal-fired power plant electric bag integration project in the prior art, the object of the invention provides a kind of specific composite filter material for coal-fired power plant electric bag integration project, this composite filtering material has improved the restriction that pure PPS is subjected to oxygen content, and smooth surface, improve the deashing ability, reduced the running resistance of equipment, prolonged service life, can guarantee in electric bag integration project, to use 35000 hours.
The present invention seeks to be achieved through the following technical solutions:
A kind of specific composite filter material for coal-fired power plant electric bag integration project is characterized in that: this composite filtering material comprises base cloth, dust-collecting face and bottom, and described dust-collecting face is arranged on the upper surface of base cloth; Bottom is arranged on the lower surface of base cloth; Dust-collecting face is made by PTFE fiber and PPS fiber blend, and wherein the part by weight of PTFE fiber is 30-70%; Base cloth is interwoven by 100% PTFE long filament longitude and latitude; Bottom is formed by PTFE fiber and PPS fiber blend, and wherein the part by weight of PTFE fiber is 30-70%.
The grammes per square metre of base cloth is 120-150g/m among the present invention
2
Base cloth, dust-collecting face together through clot after the pre-needling, are reinforced the formin felt through the water thorn with bottom again among the present invention; Plain felt is further made specific composite filter material for coal-fired power plant electric bag integration project through chemical solvent processing, stoving process, described chemical solvent is made up of PTFE emulsion, water, wherein PTFE emulsion solid content is 60%, and the PTFE percentage by weight is 10-15% in the chemical solvent.
Base cloth of the present invention adopts the 100%PTFE long filament, has extremely strong resistance to chemical corrosion, and is powerful unattenuated; Dust-collecting face and bottom adopt PTFE fiber and PPS fiber blend, have improved the restriction that pure PPS is subjected to oxygen content greatly, and smooth surface, improve deashing ability and corrosion resistance, have reduced the running resistance of equipment.
One aspect of the present invention adopts the PTFE fiber with the PPS fiber blend, has overcome the shortcoming that electric bag integration project flue gas oxidisability is strong, acid corrosion causes the 100%PPS filtrate to lose efficacy because of oxidation, chemical attack by force, improves oxidative resistance, increases the service life; On the other hand, adopt acupuncture and water thorn combination process, through after the pre-needling,, form higher porosity and littler micro-pore diameter earlier, realize the transparent performance of filtrate inside, guarantee its filtration efficiency fiber being tangled through High-Pressure Water.Improve gas permeability, fracture strength, the filtering accuracy of this filtering material, reduced the running resistance of equipment.
Compared with prior art, the present invention adopts acupuncture and water thorn complex machining process, improved ultimate strength through broadwise, gas permeability also is improved, improve the deashing ability, reduced the running resistance of equipment, improved service life greatly, can guarantee in electric bag integration project, to use 35000 hours.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is preparation technology's flow chart of the present invention.
The specific embodiment
A kind of specific composite filter material for coal-fired power plant electric bag integration project of the present invention is seen Fig. 1, and this composite filtering material comprises base cloth 1, dust-collecting face 2 and bottom 3, and dust-collecting face 2 is arranged on the upper surface of base cloth 1; Bottom 3 is arranged on the lower surface of base cloth 1; Dust-collecting face 2 is made by PTFE fiber and PPS fiber blend, and wherein the part by weight of PTFE fiber is 30-70%; Base cloth 1 is interwoven by 100% PTFE long filament longitude and latitude; The grammes per square metre of base cloth is 120-150g/m
2Bottom 3 is formed by PTFE fiber and PPS fiber blend, and wherein the part by weight of PTFE fiber is 30-70%.
Embodiment 1
Dust-collecting face 2 adopts 2.2dtexPTFE fiber and 2.2dtexPPS fiber to mix, and obtains composite fibre, and wherein the ratio of PTFE fiber is 30%; Base cloth 1 interweaves through broadwise for 2.2dtex PTFE long filament, and wherein grammes per square metre is 120g/m
2Bottom 3 is for 2.2dtexPTFE fiber and 2.2dtexPPS fiber blend form, and wherein the part by weight of PTFE fiber is 30%.
Process according to processing technology shown in Figure 2, make specific composite filter material for coal-fired power plant electric bag integration project, the preparation method is as follows:
1) at first PTFE fiber and PPS fiber are carried out pre-shredding, carry out shredding just again;
2) will carry out cross lapping after the composite fibre combing after the shredding then, form dust-collecting face; The part by weight of PTFE fiber is 30% in the dust-collecting face;
3) again according to above-mentioned same flow process, form bottom, bottom is formed by PTFE fiber and PPS fiber blend, and wherein the part by weight of PTFE fiber is 30%;
4) add the base cloth that is interwoven by 100% PTFE long filament longitude and latitude between dust-collecting face and the two-layer fibre web of bottom, the grammes per square metre of base cloth is 120g/m
2.。Through the laggard entry thorn of pre-needling machine equipment, fibre web links reinforcing, through oven dry, chemical solvent impregnation process, obtains specific composite filter material for coal-fired power plant electric bag integration project.
Chemical solvent is made up of PTFE emulsion, water, and wherein PTFE emulsion solid content is 60%, and the PTFE percentage by weight is 10% in chemical solvent.
Specific composite filter material for coal-fired power plant electric bag integration project of the present invention all surpass 1200N/5*20cm through broadwise tension brute force, compare and adopt the 100%PPS filtering material brute force of needle point method preparation to improve 20%, especially the warp-wise ultimate strength has improved nearly 50%, and approaching through the broadwise ultimate strength, effectively improved service life; Its filtering accuracy reaches 99.9999%, and running resistance is about 800Pa, and Air permenbility is 12.8cm
3/ cm
2S, surface evenness is better.Filtering accuracy, equipment running resistance aspect all have remarkable advantages.
Dust-collecting face 2 adopts 2.2dtexPTFE fiber and 2.2dtexPPS fiber to mix, and obtains composite fibre, and wherein the ratio of PTFE fiber is 50%; Base cloth 1 interweaves through broadwise for 2.2dtex PTFE long filament, and wherein grammes per square metre is 150g/m
2Bottom 3 is for 2.2dtexPTFE fiber and 2.2dtexPPS fiber blend form, and wherein the part by weight of PTFE fiber is 50%.
Process according to processing technology shown in Figure 2, make specific composite filter material for coal-fired power plant electric bag integration project, concrete preparation method such as embodiment 1.
Of the present inventionly all surpass 1200N/5*20cm through broadwise tension brute force, compare and adopt the 100%PPS filtering material brute force of needle point method preparation to improve 20%, especially the warp-wise ultimate strength has improved closely 50%, and approaching through the broadwise ultimate strength, has effectively improved service life; Its filtering accuracy reaches 99.9999%, and running resistance is about 700Pa, and Air permenbility is 11.5cm
3/ cm
2S, the surface evenly.The equipment running resistance reduces effectively, improves service life.
Embodiment 3
Dust-collecting face 2 adopts 2.2dtexPTFE fiber and 2.2dtexPPS fiber to mix, and obtains composite fibre, and wherein the ratio of PTFE fiber is 70%; Base cloth 1 interweaves through broadwise for 2.2dtex PTFE long filament, and wherein grammes per square metre is 140g/m
2Bottom 3 is for 2.2dtexPTFE fiber and 2.2dtexPPS fiber blend form, and wherein the part by weight of PTFE fiber is 70%.
Process according to processing technology shown in Figure 2, make specific composite filter material for coal-fired power plant electric bag integration project, concrete preparation method such as embodiment 1.
Of the present inventionly all surpass 1200N/5*20cm through broadwise tension brute force, compare and adopt the 100%PPS filtering material brute force of needle point method preparation to improve 20%, especially the warp-wise ultimate strength has improved closely 50%, and approaching through the broadwise ultimate strength, has effectively improved service life; Its filtering accuracy reaches 99.9999%, and running resistance is about 600Pa, and Air permenbility is 10.2cm
3/ cm
2S, surface evenness further improves.The equipment running resistance reduces effectively, improves service life.
Claims (3)
1. specific composite filter material for coal-fired power plant electric bag integration project, it is characterized in that: this composite filtering material comprises base cloth (1), dust-collecting face (2) and bottom (3), and described dust-collecting face (2) is arranged on the upper surface of base cloth (1); Bottom (3) is arranged on the lower surface of base cloth (1); Dust-collecting face (2) is made by PTFE fiber and PPS fiber blend, and wherein the part by weight of PTFE fiber is 30-70%; Base cloth (1) is interwoven by 100% PTFE long filament longitude and latitude; Bottom (3) is formed by PTFE fiber and PPS fiber blend, and wherein the part by weight of PTFE fiber is 30-70%.
2. according to claims 1 described a kind of specific composite filter material for coal-fired power plant electric bag integration project, it is characterized in that: the grammes per square metre of base cloth (1) is 120-150g/m
2
3. according to claims 1 described a kind of specific composite filter material for coal-fired power plant electric bag integration project, it is characterized in that: described base cloth (1), dust-collecting face (2) and bottom (3) together pass through clot after one pre-needling, reinforce the formin felt through the water thorn again; Plain felt is further made specific composite filter material for coal-fired power plant electric bag integration project through chemical solvent processing, stoving process, described chemical solvent is made up of PTFE emulsion, water, wherein PTFE emulsion solid content is 60%, and the PTFE percentage by weight is 10-15% in the chemical solvent.
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|---|---|---|---|
| CN 201010152295 CN101804273A (en) | 2010-04-20 | 2010-04-20 | Specific composite filter material for coal-fired power plant electric bag integration project |
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|---|---|---|---|
| CN 201010152295 CN101804273A (en) | 2010-04-20 | 2010-04-20 | Specific composite filter material for coal-fired power plant electric bag integration project |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657979A (en) * | 2011-08-24 | 2012-09-12 | 上海特安纶纤维有限公司 | Composite filter material for bag-type dust removal system of coal-fired power plant and preparation method for composite filter material |
| CN103071341A (en) * | 2013-01-11 | 2013-05-01 | 安徽省元琛环保科技有限公司 | Method for preparing asymmetric gradient filter materials for electric bag composite dust removal |
| CN103170185A (en) * | 2013-03-29 | 2013-06-26 | 福建龙净环保股份有限公司 | Filter material for coal-fired boilers and preparation method thereof |
| CN103301686A (en) * | 2013-06-19 | 2013-09-18 | 南京际华三五二一环保科技有限公司 | Processing method of spunlace environment-friendly filter material |
| CN105107268A (en) * | 2015-07-21 | 2015-12-02 | 安徽省元琛环保科技有限公司 | Preparation method of polyphenylene sulfide composite filter material filter bag |
| CN105133193A (en) * | 2015-07-21 | 2015-12-09 | 安徽省元琛环保科技有限公司 | Needle hole sealing technology of polyphenylene sulfide compound filter material |
| CN105688512A (en) * | 2016-01-28 | 2016-06-22 | 辽宁鸿盛环境技术集团有限公司 | Spunlace precise surface filter material and preparation method thereof |
| CN113828062A (en) * | 2021-09-23 | 2021-12-24 | 厦门中创环保科技股份有限公司 | Preparation method of gradient filter material |
| CN115382301A (en) * | 2022-08-24 | 2022-11-25 | 南京际华三五二一环保科技有限公司 | High-temperature-resistant glass fiber composite base fabric spunlace filter material and preparation method thereof |
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| CN2912762Y (en) * | 2006-05-30 | 2007-06-20 | 上海华成针刺材料有限公司 | Coal-burning boiler thermostable acid-proof composite filter felt |
| CN201257337Y (en) * | 2008-09-04 | 2009-06-17 | 上海博格工业用布有限公司 | Polyphenyl thioether and polytetrafluoroethylene fiber composite high-temperature resistant acupuncture filter felt |
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| CN1724111A (en) * | 2005-05-30 | 2006-01-25 | 东北大学 | Process for mfg. high temp. filtering material of composite fibre |
| CN2912762Y (en) * | 2006-05-30 | 2007-06-20 | 上海华成针刺材料有限公司 | Coal-burning boiler thermostable acid-proof composite filter felt |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657979A (en) * | 2011-08-24 | 2012-09-12 | 上海特安纶纤维有限公司 | Composite filter material for bag-type dust removal system of coal-fired power plant and preparation method for composite filter material |
| CN102657979B (en) * | 2011-08-24 | 2015-09-09 | 上海特安纶纤维有限公司 | The composite filtering material of coal-burning power plant's bag-type dust removing system and preparation method |
| CN103071341A (en) * | 2013-01-11 | 2013-05-01 | 安徽省元琛环保科技有限公司 | Method for preparing asymmetric gradient filter materials for electric bag composite dust removal |
| CN103170185B (en) * | 2013-03-29 | 2014-12-31 | 福建龙净环保股份有限公司 | Filter material for coal-fired boilers and preparation method thereof |
| CN103170185A (en) * | 2013-03-29 | 2013-06-26 | 福建龙净环保股份有限公司 | Filter material for coal-fired boilers and preparation method thereof |
| CN103301686A (en) * | 2013-06-19 | 2013-09-18 | 南京际华三五二一环保科技有限公司 | Processing method of spunlace environment-friendly filter material |
| CN103301686B (en) * | 2013-06-19 | 2014-11-19 | 南京际华三五二一环保科技有限公司 | Processing method of spunlace environment-friendly filter material |
| CN105107268A (en) * | 2015-07-21 | 2015-12-02 | 安徽省元琛环保科技有限公司 | Preparation method of polyphenylene sulfide composite filter material filter bag |
| CN105133193A (en) * | 2015-07-21 | 2015-12-09 | 安徽省元琛环保科技有限公司 | Needle hole sealing technology of polyphenylene sulfide compound filter material |
| CN105688512A (en) * | 2016-01-28 | 2016-06-22 | 辽宁鸿盛环境技术集团有限公司 | Spunlace precise surface filter material and preparation method thereof |
| CN113828062A (en) * | 2021-09-23 | 2021-12-24 | 厦门中创环保科技股份有限公司 | Preparation method of gradient filter material |
| CN115382301A (en) * | 2022-08-24 | 2022-11-25 | 南京际华三五二一环保科技有限公司 | High-temperature-resistant glass fiber composite base fabric spunlace filter material and preparation method thereof |
| CN115382301B (en) * | 2022-08-24 | 2024-01-26 | 南京际华三五二一环保科技有限公司 | High-temperature-resistant glass fiber composite-based water-jet filter material and preparation method thereof |
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Open date: 20100818 |