CN101898059B - Corrosion-resisting and heat-resisting compound filter material and preparation method thereof - Google Patents
Corrosion-resisting and heat-resisting compound filter material and preparation method thereof Download PDFInfo
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- CN101898059B CN101898059B CN 201010238714 CN201010238714A CN101898059B CN 101898059 B CN101898059 B CN 101898059B CN 201010238714 CN201010238714 CN 201010238714 CN 201010238714 A CN201010238714 A CN 201010238714A CN 101898059 B CN101898059 B CN 101898059B
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- filter
- fibre
- base cloth
- felt
- filter felt
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- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 150000001875 compounds Chemical class 0.000 title claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 57
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 44
- 239000004744 fabric Substances 0.000 claims abstract description 41
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 35
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 27
- 239000003365 glass fiber Substances 0.000 claims abstract description 27
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 27
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims abstract description 22
- 239000002657 fibrous material Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000009941 weaving Methods 0.000 claims abstract description 6
- 229940058401 polytetrafluoroethylene Drugs 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 20
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 18
- 229920004933 Terylene® Polymers 0.000 claims description 16
- 238000002803 maceration Methods 0.000 claims description 15
- 239000000839 emulsion Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 4
- 238000007796 conventional method Methods 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002759 woven fabric Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 239000012528 membrane Substances 0.000 abstract 2
- 229920000728 polyester Polymers 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- 229920000784 Nomex Polymers 0.000 description 10
- 239000004763 nomex Substances 0.000 description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 241000218691 Cupressaceae Species 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Filtering Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a corrosion-resisting and heat-resisting compound filter material and a preparation method thereof. The compound filter material comprises a base fabric and filter felts, wherein the upper surface and the lower surface of the base fabric are both coated with the filter felts, and the surface of an upper filter layer of the upper surface is coated with a polytetrafluoroethylene membrane; the base fabric is impregnated with an impregnating liquid; the filter felts on the upper surface are all prepared by mixing chemical polyester fiber, glass fiber, polyphenylene sulfide fiber, polyarmide fiber and polytetrafluoroethylene fiber; the filter felt on the lower surface is prepared by mixing chemical polyester fiber, glass fiber, polyphenylene sulfide fiber and polyarmide fiber; and the lengths of all the fiber materials ranges from 60 to 70 mm. The preparation method comprises the following steps of: weaving the glass fiber into a woven base fabric; impregnating the woven base fabric, drying for use; making the filter felts on the upper surface and the lower surface, and coating the filter felts on the upper surface and the lower surface to form a compound filter felt; impregnating once again, and drying; and finally, coating the polytetrafluoroethylene membrane on the surface of the upper filter layer.
Description
Technical field
The present invention relates to a kind of filtering material and preparation method thereof, especially a kind of corrosion-resisting and heat-resisting compound filter material that purifies for coal-burning boiler and flue gas of garbage furnace and preparation method thereof.
Background technology
The present filtering material that uses at the flue gas purification system of coal-burning boiler and incinerator mainly is polyphenylene sulfide (PPS) Nomex, or polytetrafluoroethylene (PTFE) (PTFE) fiber needled felt, or adopt glass fibre to cover the filtrate of poly tetrafluoroethylene, wherein, the oxidation resistent susceptibility of PPS Nomex is bad, can't adapt to the filtration environment under the high oxygen condition, and do not have water repellency, under low temperature or the condition of high temperature, move, very easily cause sticking with paste bag, affect the effect of gas cleaning.Be generally 1～2 year the normal service life of PPS Nomex.Although the PTFE Nomex has water repellency, oxidation resistent susceptibility, its price is higher, and is also very high to the requirement of equipment for after-treatment, increased the operating cost of enterprise, affected its promoting the use of in the general enterprise of profitability.Be generally 3 years the normal service life of PTFE Nomex.The base material that glass fibre covers the polytetrafluoroethylene (PTFE) film filtering material is glass fibre, and its folding resistance is relatively poor, should not use under the high wind speed state, especially in running, after being adhered to by oil droplet etc., also causes easily filter bag to lose efficacy.
The raw material that How to choose is suitable is made Nomex, and they are combined into the filtering material of new corrosion-resistant and high-temperature resistant, to adapt to the specific environment for use of coal-burning boiler and flue gas of garbage furnace cleaning system, is the long-term major subjects of paying close attention in this area always.
Summary of the invention
The object of the invention is to: for the problem that the main filtering material that generally uses in present coal-burning boiler and the flue gas of garbage furnace gas cleaning exists, proposes filtering material of a kind of corrosion-resistant and high-temperature resistant by multiple fiber composite making and preparation method thereof.
The object of the present invention is achieved like this: a kind of corrosion-resisting and heat-resisting compound filter material, comprise base cloth and filter felt, it is characterized in that: the upper and lower surface of base cloth all is covered with filter felt, wherein: the filter felt that is overlying on upper surface is the upper filter course of dust-collecting face, and the filter felt that is overlying on lower surface is lower filter course; Surface at upper filter course is covered with poly tetrafluoroethylene; Described base cloth is through the maceration extract impregnation process; The filter felt of described upper filter course is to make after evenly being mixed by every square metre of 55-65g, 45-55g, 40-50g, 35-45g and 30-40g respectively by terylene chemical fibre, glass fibre, polyphenylene sulfide fibre, Fypro and polytetrafluoroethylene fibre; The filter felt of described lower filter course is to make after evenly being mixed by every square metre of 55-65g, 45-55g, 40-50g and 35-45g respectively by terylene chemical fibre, glass fibre, polyphenylene sulfide fibre and Fypro; The length of the various fibrous materials in upper filter course and the lower filter course is 60-70mm.
In the present invention: described base cloth is glass fiber weaving cloth, and the weight per unit area of base cloth is 300g/m
2
In the present invention: described maceration extract is comprised of ptfe emulsion, 285-1 polymethylphenyl siloxane fluid emulsion and water, and their weight ratio is 12: 4: 59.
In the present invention: the specification of described terylene chemical fibre is 2.5d-2.8d, the specification of glass fibre is 5d-7d, the specification of polyphenylene sulfide fibre is 2d-2.5d, the specification of Fypro is 5d-7d, the specification of polytetrafluoroethylene fibre is 5d-7d, the length of described fibrous material is 60mm-70mm, is overlying on base cloth upper surface and lower surface and is respectively 220-230g/m as the weight per unit area of the filter felt of filter course
2And 190-200g/m
2
A kind of preparation method of above-mentioned composite filtering material is characterized in that: the maceration extract of base cloth is comprised of ptfe emulsion, 285-1 polymethylphenyl siloxane fluid emulsion and water, and their weight ratio is 12: 4: 59, and the preparation process of composite filtering material is:
A) fiberglass weaving is become woven fabric, as the base cloth of composite filtering material, the weight per unit area of base cloth is 300g/m
2
B) base cloth is immersed in carries out impregnation process in the maceration extract, drain maceration extract again, drying is for subsequent use after processing;
C) terylene chemical fibre, glass fibre, polyphenylene sulfide fibre, Fypro and polytetrafluoroethylene fibre are evenly made filter felt after the mixing by every square metre of 55-65g, 45-55g, 40-50g, 35-45g and 30-40g respectively, as upper filter course, the weight per unit area of upper filter felt is 220-230g/m
2Terylene chemical fibre, glass fibre, polyphenylene sulfide fibre and Fypro are evenly made filter felt after the mixing by every square metre of 55-65g, 45-55g, 40-50g and 35g-45g respectively, as lower filter course, the weight per unit area of lower filter felt is 190-200g/m
2
D) filter felt as upper and lower filter course that the c step is obtained is overlying on respectively the upper and lower surface of the base cloth for subsequent use of b step acquisition, forms composite filter felt;
E) composite filter felt that the d step is obtained drains ptfe emulsion again through behind the dipping of ptfe emulsion, and drying is processed;
F) adopt conventional method filter course surface on the composite filter felt after the end of process e step to carry out overlay film with polytetrafluoroethylene (PTFE) and process, finally form corrosion-resisting and heat-resisting compound filter material, the weight per unit area of composite filtering material is 760-800g/m
2
In the preparation method of filtering material: in the c step, the specification of described terylene chemical fibre is 2.5d-2.8d, the specification of glass fibre is 5d-7d, the specification of polyphenylene sulfide fibre is 2d-2.5d, the specification of Fypro is 5d-7d, the specification of polytetrafluoroethylene fibre is 5d-7d, and the length of described fibrous material is 60mm-70mm.
In the preparation method of filtering material: drying described in b step and the e step is processed and is referred to: air-dry or naturally dry or dry through baking device; The method of making upper and lower filter felt in the c step is needle point method; The d step is needle point method with the method that the filter felt of upper and lower filter course is overlying on respectively the upper and lower surface of base cloth for subsequent use.
The invention has the advantages that: because the terylene chemical fibre has very strong coherent, glass fibre has resistant to elevated temperatures characteristics, polyphenylene sulfide fibre has stronger corrosion-resistant, resistant to elevated temperatures performance, in as filter course, use simultaneously four kinds or five kinds of fibers in terylene chemical fibre, glass fibre, polyphenylene sulfide fibre, Fypro and the polytetrafluoroethylene fibre, both can remedy the deficiency in the use of PPS Nomex, can avoid again the PTFE Nomex to the exigent drawback of equipment for after-treatment, reduce the enterprise operation cost; Estimate service life of the present invention can reach more than 3 years.
Description of drawings:
Fig. 1 is the section structure schematic diagram of the embodiment of the invention
Among the figure: 1, base cloth, 2, upper filter course, 3, lower filter course, 4, poly tetrafluoroethylene.
The specific embodiment
As seen from Figure 1, section structure of the present invention is all to cover filter felt on the upper and lower surface of base cloth 1, and wherein: the filter felt that is overlying on upper surface is the upper filter course 2 of dust-collecting face, and the filter felt that is overlying on lower surface is lower filter course 3; Be covered with poly tetrafluoroethylene 4 on the surface of upper filter course.
The filter felt of upper filter course 2 is to make after evenly being mixed by every square metre of 55-65g, 45-55g, 40-50g, 35-45g and 30-40g respectively by terylene chemical fibre, glass fibre, polyphenylene sulfide fibre, Fypro and polytetrafluoroethylene fibre.The filter felt of lower filter course 3 is to make after evenly being mixed by every square metre of 55-65g, 45-55g, 40-50g and 35-45g respectively by terylene chemical fibre, glass fibre, polyphenylene sulfide fibre and Fypro; The length of the various fibrous materials in upper filter course 2 and the lower filter course 3 is 60mm-70mm.
Embodiment 1
The preparation of maceration extract
Ptfe emulsion (Guangzhou pine and cypress chemical industry Co., Ltd provides), 285-1 polymethylphenyl siloxane fluid emulsion (Jiangyin double heroes new material Co., Ltd provides) and water are mixed according to 12: 4: 59 weight ratio, and it is rear for subsequent use to stir.
The preparation of corrosion-resisting and heat-resisting compound filter material
1) processing of base cloth:
Base cloth is by glass fiber weaving cloth (cooperation processing), and the weight per unit area of base cloth is 300g/m
2
Place the maceration extract of embodiment 1 to flood base cloth, after base cloth soaks into fully, drain again maceration extract, through air-dry or for subsequent use after the baking device oven dry.
2) making of upper and lower filter course:
The polytetrafluoroethylene fibre of selecting specification is the terylene chemical fibre of 2.5d-2.8d, glass fibre that specification is 5d-7d, specification is 2d-2.5d polyphenylene sulfide fibre, Fypro that specification is 5d-7d and specification to be 5d-7d is got the raw materials ready by every square metre of 55-65g, 45-55g, 40-50g, 35-45g and 30-40g respectively, they are evenly made filter felt with needle point method or other method after the mixing, as upper filter course, the weight per unit area of filter felt is 220-230g/m
2The Fypro of selecting specification is the terylene chemical fibre of 2.5d-2.8d, glass fibre that specification is 5d-7d, specification is 2d-2.5d polyphenylene sulfide fibre and specification to be 5d-7d is got the raw materials ready by every square metre of 55-65g, 45-55g, 40-50g and 35-45g respectively, they are evenly made filter felt with needle point method or other method after the mixing, as lower filter course, the weight per unit area of filter felt is 190-200g/m
2The length of selected fibrous material is 60mm-70mm.
3, the preparation of composite filtering material
The filter felt as upper and lower filter course of having made is overlying on respectively through the upper and lower surface of base cloth air-dry or after the baking device oven dry, by needle point method or other method they is integrated, form composite filter felt.
With composite filter felt through maceration extract (embodiment 1 provides) dipping after (dipping method is with the processing of 1 base cloth of embodiment 2), drain again maceration extract, through air-dry or naturally dry or dry through baking device.
Utilizing traditional technique is dust-collecting face carries out the overlay film processing with polytetrafluoroethylene (PTFE) (Guangzhou pine and cypress chemical industry Co., Ltd provides) after, finally to form corrosion-resisting and heat-resisting compound filter material on the filter felt surface of upper filter course.The weight per unit area of corrosion-resisting and heat-resisting compound filter material is 760g/m
2-800g/m
2
The present invention's (embodiment 2 provides) contrasts with the result of use of PPS Nomex and PTFE Nomex filtering material:
| Filtering material | Specification | Service time | Filter efficiency | Continue heatproof | Moment heatproof | Unit cost |
| The present invention | ￠130×2450 | 36 months | 99.8％ | 270℃ | 280℃ | 98 yuan |
| The PPS filtrate | ￠130×2450 | 18 months | 99.8％ | 190℃ | 220℃ | 140 yuan |
| The PTFE filtrate | ￠130×2450 | 36 months | 99.8％ | 200℃ | 230℃ | 327 yuan |
Claims (5)
1. corrosion-resisting and heat-resisting compound filter material, comprise base cloth and filter felt, it is characterized in that: the upper and lower surface of base cloth all is covered with filter felt, and wherein: the filter felt that is overlying on upper surface is the upper filter course of dust-collecting face, and the filter felt that is overlying on lower surface is lower filter course; Surface at upper filter course is covered with poly tetrafluoroethylene; Described base cloth is through the maceration extract impregnation process; The filter felt of described upper filter course is to make after evenly being mixed by every square metre of 55-65g, 45-55g, 40-50g, 35-45g and 30-40g respectively by terylene chemical fibre, glass fibre, polyphenylene sulfide fibre, Fypro and polytetrafluoroethylene fibre; The filter felt of described lower filter course is to make after evenly being mixed by every square metre of 55-65g, 45-55g, 40-50g and 35-45g respectively by terylene chemical fibre, glass fibre, polyphenylene sulfide fibre and Fypro; The length of the various fibrous materials in upper filter course and the lower filter course is 60-70mm;
Described base cloth is glass fiber weaving cloth, and the weight per unit area of base cloth is 300g/m
2
Described maceration extract is comprised of ptfe emulsion, 285-1 polymethylphenyl siloxane fluid emulsion and water, and their weight ratio is 12: 4: 59.
2. corrosion-resisting and heat-resisting compound filter material according to claim 1, it is characterized in that: the specification of described terylene chemical fibre is 2.5d-2.8d, the specification of glass fibre is 5d-7d, the specification of polyphenylene sulfide fibre is 2d-2.5d, the specification of Fypro is 5d-7d, the specification of polytetrafluoroethylene fibre is 5d-7d, and the length of described fibrous material is 60-70mm, is overlying on base cloth upper surface and lower surface and is respectively 220-230g/m as the weight per unit area of the filter felt of filter course
2And 190-200g/m
2
3. preparation method of composite filtering material as claimed in claim 1, it is characterized in that: the maceration extract of base cloth is comprised of ptfe emulsion, 285-1 polymethylphenyl siloxane fluid emulsion and water, and their weight ratio is 12: 4: 59, and the preparation process of composite filtering material is:
A) fiberglass weaving is become woven fabric, as the base cloth of composite filtering material, the weight per unit area of base cloth is 300g/m
2
B) base cloth is immersed in carries out impregnation process in the maceration extract, drain maceration extract again, drying is for subsequent use after processing;
C) terylene chemical fibre, glass fibre, polyphenylene sulfide fibre, Fypro and polytetrafluoroethylene fibre are evenly made filter felt after the mixing by every square metre of 55-65g, 45-55g, 40-50g, 35-45g and 30-40g respectively, as upper filter course, the weight per unit area of upper filter felt is 220-230g/m
2Terylene chemical fibre, glass fibre, polyphenylene sulfide fibre and Fypro are evenly made filter felt after the mixing by every square metre of 55-65g, 45-55g, 40-50g and 35g-45g respectively, as lower filter course, the weight per unit area of lower filter felt is 190-200g/m
2
D) filter felt as upper and lower filter course that the c step is obtained is overlying on respectively the upper and lower surface of the base cloth for subsequent use of b step acquisition, forms composite filter felt;
E) composite filter felt that the d step is obtained drains ptfe emulsion again through behind the dipping of ptfe emulsion, and drying is processed;
F) adopt conventional method filter course surface on the composite filter felt after the end of process e step to carry out overlay film with polytetrafluoroethylene (PTFE) and process, finally form corrosion-resisting and heat-resisting compound filter material, the weight per unit area of composite filtering material is 760-800g/m
2
4. the preparation method of composite filtering material according to claim 3, it is characterized in that: in the c step, the specification of described terylene chemical fibre is 2.5d-2.8d, the specification of glass fibre is 5d-7d, the specification of polyphenylene sulfide fibre is 2d-2.5d, the specification of Fypro is 5d-7d, and the specification of polytetrafluoroethylene fibre is 5d-7d, and the length of described fibrous material is 60-70mm.
5. the preparation method of composite filtering material according to claim 3 is characterized in that: the drying described in b step and the e step is processed and is referred to: air-dry or naturally dry or dry through baking device; The method of making upper and lower filter felt in the c step is needle point method; The d step is needle point method with the method that the filter felt of upper and lower filter course is overlying on respectively the upper and lower surface of base cloth for subsequent use.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010238714 CN101898059B (en) | 2010-07-28 | 2010-07-28 | Corrosion-resisting and heat-resisting compound filter material and preparation method thereof |
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| CN 201010238714 CN101898059B (en) | 2010-07-28 | 2010-07-28 | Corrosion-resisting and heat-resisting compound filter material and preparation method thereof |
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| CN101898059B true CN101898059B (en) | 2013-05-29 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102553354A (en) * | 2010-12-08 | 2012-07-11 | 厦门三维丝环保股份有限公司 | Acid moisture condensation corrosion resistant filtering material and production process thereof |
| CN102275373B (en) * | 2011-04-26 | 2014-08-20 | 中材科技股份有限公司 | Preparation method of PPs (polyphenylene sulfite) composite punched felt membrane filter material |
| CN102877369B (en) * | 2012-09-20 | 2014-11-05 | 蚌埠凤凰滤清器有限责任公司 | Bamboo load-bearing chitosan industrial filter paper for automobiles and preparation method of bamboo load-bearing chitosan industrial filter paper |
| CN102995499B (en) * | 2012-10-31 | 2015-10-07 | 蚌埠首创滤清器有限公司 | A kind of filter paper of filter containing smectite powder and preparation method thereof |
| CN102995498B (en) * | 2012-10-31 | 2015-10-07 | 蚌埠首创滤清器有限公司 | A kind of corrosion-and high-temp-resistant filter paper of filter and preparation method thereof |
| CN103691201B (en) * | 2013-11-25 | 2015-08-12 | 盐城工学院 | The manufacture method of chimney exhaust gas dust removal and filtration cloth |
| CN105365305A (en) * | 2014-08-27 | 2016-03-02 | 徐珂 | Glass fiber and polyester composite needle-punched felt and manufacturing method thereof |
| CN105625042A (en) * | 2014-11-04 | 2016-06-01 | 厦门三维丝环保股份有限公司 | High temperature resistant filter cartridge substrate filter material stiffening finishing method |
| CN105709503A (en) * | 2014-12-05 | 2016-06-29 | 东丽纤维研究所（中国）有限公司 | Base cloth with high gram weight and filter felt made of same |
| CN104674452B (en) * | 2015-01-14 | 2017-09-26 | 上海特安纶纤维有限公司 | The filtering material and its manufacture method of a kind of blending fiber type containing polyimide fiber and containing sulfuryl |
| CN104941317B (en) * | 2015-07-06 | 2016-09-14 | 江苏菲斯特滤料有限公司 | A kind of straw boiler, heating boiler fire resistant filter material and preparation method thereof |
| CN105401364B (en) * | 2015-11-30 | 2017-08-01 | 安徽元琛环保科技股份有限公司 | A kind of nanofiber surface layer filtering material aftertreatment technology and its equipment |
| CN106215526A (en) * | 2016-08-31 | 2016-12-14 | 何县香 | A kind of composite filter felt |
| CN107627699A (en) * | 2017-09-30 | 2018-01-26 | 张延青 | The explosion-proof composite filtering material of coal industry anti-corrosion and its production technology |
| CN108261838B (en) * | 2018-02-05 | 2020-08-14 | 安徽元琛环保科技股份有限公司 | Special filter material for waste incineration and preparation method and application thereof |
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| JP4034907B2 (en) * | 1999-05-31 | 2008-01-16 | 株式会社フジコー | Heat-resistant filter cloth and its manufacturing method |
| CN100446836C (en) * | 2006-09-13 | 2008-12-31 | 营口耐斯特滤料科技有限公司 | Method for producing anti corrosion composite filtering material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060231487A1 (en) * | 2005-04-13 | 2006-10-19 | Bartley Stuart L | Coated filter media |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4034907B2 (en) * | 1999-05-31 | 2008-01-16 | 株式会社フジコー | Heat-resistant filter cloth and its manufacturing method |
| CN100446836C (en) * | 2006-09-13 | 2008-12-31 | 营口耐斯特滤料科技有限公司 | Method for producing anti corrosion composite filtering material |
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