CN201799172U - Special composite filter material for electric bag combined project of coal fired power plant - Google Patents
Special composite filter material for electric bag combined project of coal fired power plant Download PDFInfo
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- CN201799172U CN201799172U CN2010201659371U CN201020165937U CN201799172U CN 201799172 U CN201799172 U CN 201799172U CN 2010201659371 U CN2010201659371 U CN 2010201659371U CN 201020165937 U CN201020165937 U CN 201020165937U CN 201799172 U CN201799172 U CN 201799172U
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Abstract
The utility model discloses a special composite filter material for an electric bag combined project of a coal fired power plant. The composite filter material comprises a base fabric, a dust facing surface and a bottom layer, wherein the dust facing surface manufactured by blending polytetrafluoroethylene (PTFE) fibers and polyphenylene sulfide (PPS) fibers is arranged on the upper surface of the base fabric; the bottom layer manufactured by blending the PTFE fibers and the PPS fibers is arranged on the lower surface of the base fabric; the base fabric is formed by warp-weft interweaving of complete PTFE filaments; the weight proportion of the PTFE fibers in the dust facing surface is 30 to 70 percent; and the weight proportion of the PTFE fibers in the bottom layer is 30 to 70 percent. The fibers are entwisted to form a blank felt by adopting a composite process of needling and spunlacing, and the corrosion resistance and the chemical resistance of the blank felt are further improved by chemical solvent dipping treatment. The composite filter material has a smooth surface, improves the ash cleaning capability, reduces the running resistance of equipment, prolongs the service life, and is suitable for the electric bag combined project of the coal fired power plant.
Description
Technical field
The utility model 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 utility model purpose 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 utility model purpose is 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 the described dust-collecting face of being made by PTFE fiber and PPS fiber blend is arranged on the upper surface of base cloth; The bottom that is formed by PTFE fiber and PPS fiber blend is arranged on the lower surface of the base cloth that is interwoven by 100% PTFE long filament longitude and latitude; The part by weight of PTFE fiber is 30-70% in the dust-collecting face; The part by weight of PTFE fiber is 30-70% in the bottom.
The grammes per square metre of base cloth is 120-150g/m in the utility model
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 in the utility model; 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.
The utility model base cloth 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.
The utility model adopts the PTFE fiber with the PPS fiber blend on the one hand, 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 utility model has improved the ultimate strength through broadwise, and gas permeability also is improved, and improves the deashing ability, has reduced the running resistance of equipment, has improved service life greatly, can guarantee to use 35000 hours in electric bag integration project.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
A kind of specific composite filter material for coal-fired power plant electric bag integration project described in the utility model 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%.
The preparation method of specific composite filter material for coal-fired power plant electric bag integration project 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 described in the utility model 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%.
The concrete preparation method of specific composite filter material for coal-fired power plant electric bag integration project such as embodiment 1.
Of the present utility modelly 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%.
The concrete preparation method of specific composite filter material for coal-fired power plant electric bag integration project such as embodiment 1.
Of the present utility modelly 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 (2)
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 the described dust-collecting face of being made by PTFE fiber and PPS fiber blend (2) is arranged on the upper surface of base cloth (1); The bottom (3) that is formed by PTFE fiber and PPS fiber blend is arranged on the lower surface of the base cloth (1) that is interwoven by 100% PTFE long filament longitude and latitude.
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
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201659371U CN201799172U (en) | 2010-04-20 | 2010-04-20 | Special composite filter material for electric bag combined project of coal fired power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201659371U CN201799172U (en) | 2010-04-20 | 2010-04-20 | Special composite filter material for electric bag combined project of coal fired power plant |
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| Publication Number | Publication Date |
|---|---|
| CN201799172U true CN201799172U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201659371U Expired - Fee Related CN201799172U (en) | 2010-04-20 | 2010-04-20 | Special composite filter material for electric bag combined project of coal fired power plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230708A (en) * | 2013-04-11 | 2013-08-07 | 安吉县盛丰玻璃纤维有限公司 | A filter material for filtering and a manufacturing process thereof |
| CN105688510A (en) * | 2016-01-28 | 2016-06-22 | 苏州辉龙净化过滤有限公司 | P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and preparation method thereof |
| CN108187419A (en) * | 2018-03-27 | 2018-06-22 | 鑫蓝环保科技（昆山）有限公司 | Filter bag type composite fibre hot precipitator |
| CN109224631A (en) * | 2018-09-28 | 2019-01-18 | 安徽元琛环保科技股份有限公司 | A kind of dedusting demercuration integration filtrate and preparation method thereof |
-
2010
- 2010-04-20 CN CN2010201659371U patent/CN201799172U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230708A (en) * | 2013-04-11 | 2013-08-07 | 安吉县盛丰玻璃纤维有限公司 | A filter material for filtering and a manufacturing process thereof |
| CN105688510A (en) * | 2016-01-28 | 2016-06-22 | 苏州辉龙净化过滤有限公司 | P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and preparation method thereof |
| CN108187419A (en) * | 2018-03-27 | 2018-06-22 | 鑫蓝环保科技（昆山）有限公司 | Filter bag type composite fibre hot precipitator |
| CN108187419B (en) * | 2018-03-27 | 2020-07-14 | 鑫蓝环保科技（昆山）有限公司 | Filter bag type composite fiber high-temperature dust remover |
| CN109224631A (en) * | 2018-09-28 | 2019-01-18 | 安徽元琛环保科技股份有限公司 | A kind of dedusting demercuration integration filtrate and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING JIHUA 3521 ENVIRONMENTAL TECHNOLOGY CO., L Free format text: FORMER OWNER: NANJING JIHUA 3521 SPECIAL EQUIPMENT CO., LTD. Effective date: 20130401 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210007 NANJING, JIANGSU PROVINCE TO: 210000 NANJING, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130401 Address after: Jiangsu province Nanjing City Road 210000, Jiangning Binjiang Development Zone Patentee after: Nanjing Jihua 3521 Environmental Protection Science & Technology Co., Ltd. Address before: 210007 Jiangsu city of Nanjing Province in Baixia District Agricultural Road No. 1 Patentee before: Nanjing Jihua 3521 Special Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20170420 |