CN101898059A - 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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- CN101898059A CN101898059A CN 201010238714 CN201010238714A CN101898059A CN 101898059 A CN101898059 A CN 101898059A CN 201010238714 CN201010238714 CN 201010238714 CN 201010238714 A CN201010238714 A CN 201010238714A CN 101898059 A CN101898059 A CN 101898059A
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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 is used for coal-burning boiler and flue gas of garbage furnace purification 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) 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 the low temperature or the condition of high temperature, move, very easily cause sticking with paste bag, influence the effect of gas cleaning.Be generally 1～2 year the normal service life of PPS Nomex.Though 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, influenced 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 a 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 filter bag to lose efficacy easily.
How to select proper raw material to make 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, be the long-term major subjects of paying close attention in this area always.
Summary of the invention
The objective of the invention is to:, proposes filtering material of a kind of corrosion-resistant and high-temperature resistant by multiple fiber composite making and preparation method thereof at 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.
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 last filter course of dust-collecting face, and the filter felt that is overlying on lower surface is following filter course; Surface at last filter course is covered with poly tetrafluoroethylene; Described base cloth is through the maceration extract impregnation process; The described filter felt of going up 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 described filter felt of filter course down 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 last filter course and the following filter course is 60-70mm.
In the present invention: described base cloth is the woven cloth of glass fibre, and the weight per unit area of base cloth is 300g/m
2
In the present invention: described maceration extract is made up 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 made up 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 cloth, 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, drop removes maceration extract again, and it is standby that drying is handled the back;
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 last filter course, the weight per unit area of last 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 following filter course, the weight per unit area of following 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 the upper and lower surface of the standby base cloth of b step acquisition respectively, forms the combined filtration felt;
E) the combined filtration felt that the d step is obtained is through behind the dipping of ptfe emulsion, and drop removes ptfe emulsion again, and drying is handled;
F) adopt conventional method filter course surface on the combined filtration felt after the end of process e step to carry out overlay film with polytetrafluoroethylene (PTFE) and handle, 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 handled and is meant: air-dry or dry naturally or dry through baking device; The method of making upper and lower filter felt in the c step is a needle point method; The d step is a needle point method with the method that the filter felt of upper and lower filter course is overlying on the upper and lower surface of standby base cloth respectively.
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, resistance and high temperature resistance property, in as filter course, use four kinds or five kinds of fibers in terylene chemical fibre, glass fibre, polyphenylene sulfide fibre, Fypro and the polytetrafluoroethylene fibre simultaneously, both can remedy the deficiency in the use of PPS Nomex, can avoid the exigent drawback of PTFE Nomex again, reduce the enterprise operation cost equipment for after-treatment; 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, go up filter course, 3, filter course down, 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 last filter course 2 of dust-collecting face, and the filter felt that is overlying on lower surface is following filter course 3; Be covered with poly tetrafluoroethylene 4 on the surface of last filter course.
The filter felt of last 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 following 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 last filter course 2 and the following filter course 3 is 60mm-70mm.
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 the back that stirs is standby.
The preparation of corrosion-resisting and heat-resisting compound filter material
1) processing of base cloth:
Base cloth is by the woven cloth of glass fibre (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, treat that base cloth soaks into fully after, drop removes maceration extract again, through air-dry or standby after baking device oven dry.
2) making of upper and lower filter course:
The polytetrafluoroethylene fibre of selecting for use 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 mixed the back make filter felt with needle point method or other method, as last filter course, the weight per unit area of filter felt is 220-230g/m
2The Fypro of selecting for use 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 mixed the back make filter felt with needle point method or other method, as following 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 of having made as upper and lower filter course is overlying on respectively through the upper and lower surface of base cloth air-dry or after the baking device oven dry, they is integrated, form the combined filtration felt by needle point method or other method.
Through maceration extract (embodiment 1 provides) dipping back (dipping method is with the processing of 1 base cloth of embodiment 2), drop removes maceration extract again with the combined filtration felt, through air-dry or dry naturally or dry through baking device.
Utilizing traditional technology 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 last 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 (7)
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 last filter course of dust-collecting face, and the filter felt that is overlying on lower surface is following filter course; Surface at last filter course is covered with poly tetrafluoroethylene; Described base cloth is through the maceration extract impregnation process; The described filter felt of going up 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 described filter felt of filter course down 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 last filter course and the following filter course is 60-70mm.
2. corrosion-resisting and heat-resisting compound filter material according to claim 1 is characterized in that: described base cloth is the woven cloth of glass fibre, and the weight per unit area of base cloth is 300g/m
2
3. corrosion-resisting and heat-resisting compound filter material according to claim 2 is characterized in that: described maceration extract is made up of ptfe emulsion, 285-1 polymethylphenyl siloxane fluid emulsion and water, and their weight ratio is 12: 4: 59.
4. according to claim 1 or 2 or 3 described corrosion-resisting and heat-resisting compound filter materials, 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
5. preparation method as composite filtering material as described in claim 1 or 2 or 3, it is characterized in that: the maceration extract of base cloth is made up of ptfe emulsion, 285-1 polymethylphenyl siloxane fluid emulsion and water, their weight ratio is 12: 4: 59, and the preparation process of composite filtering material is:
A) fiberglass weaving is become woven cloth, 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, drop removes maceration extract again, and it is standby that drying is handled the back;
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 last filter course, the weight per unit area of last 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 following filter course, the weight per unit area of following 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 the upper and lower surface of the standby base cloth of b step acquisition respectively, forms the combined filtration felt;
E) the combined filtration felt that the d step is obtained is through behind the dipping of ptfe emulsion, and drop removes ptfe emulsion again, and drying is handled;
F) adopt conventional method filter course surface on the combined filtration felt after the end of process e step to carry out overlay film with polytetrafluoroethylene (PTFE) and handle, finally form corrosion-resisting and heat-resisting compound filter material, the weight per unit area of composite filtering material is 760-800g/m
2
6. the preparation method of composite filtering material according to claim 5, 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.
7. the preparation method of composite filtering material according to claim 5 is characterized in that: the drying described in b step and the e step is handled and is meant: air-dry or dry naturally or dry through baking device; The method of making upper and lower filter felt in the c step is a needle point method; The d step is a needle point method with the method that the filter felt of upper and lower filter course is overlying on the upper and lower surface of standby base cloth respectively.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275373A (en) * | 2011-04-26 | 2011-12-14 | 中材科技股份有限公司 | Preparation method of PPs (polyphenylene sulfite) composite punched felt membrane filter material |
| 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 |
| CN102877369A (en) * | 2012-09-20 | 2013-01-16 | 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 |
| CN102995498A (en) * | 2012-10-31 | 2013-03-27 | 蚌埠首创滤清器有限公司 | High-temperature-resistant corrosion-resistant filter paper for filter and preparation method of filter paper |
| CN102995499A (en) * | 2012-10-31 | 2013-03-27 | 蚌埠首创滤清器有限公司 | Modified montmorillonite powder-containing filter paper and preparation method thereof |
| CN104674452A (en) * | 2015-01-14 | 2015-06-03 | 上海特安纶纤维有限公司 | Filter material of blend fiber containing polyimide fiber and sulphone and manufacturing 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 |
| CN104941317A (en) * | 2015-07-06 | 2015-09-30 | 江苏菲斯特滤料有限公司 | High temperature resistant filter material used for straw boiler or heating boiler and preparation method thereof |
| CN105365305A (en) * | 2014-08-27 | 2016-03-02 | 徐珂 | Glass fiber and polyester composite needle-punched felt and manufacturing method thereof |
| CN105401364A (en) * | 2015-11-30 | 2016-03-16 | 安徽省元琛环保科技有限公司 | Nanometer fiber surface layer filtering material after-treatment technology and equipment |
| 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 |
| 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 |
| CN108261838A (en) * | 2018-02-05 | 2018-07-10 | 安徽元琛环保科技股份有限公司 | A kind of special filtrate of waste incineration and its preparation method and application |
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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 |
| CN102275373A (en) * | 2011-04-26 | 2011-12-14 | 中材科技股份有限公司 | Preparation method of PPs (polyphenylene sulfite) composite punched felt membrane filter material |
| 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 |
| CN102877369A (en) * | 2012-09-20 | 2013-01-16 | 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 |
| 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 |
| CN102995498A (en) * | 2012-10-31 | 2013-03-27 | 蚌埠首创滤清器有限公司 | High-temperature-resistant corrosion-resistant filter paper for filter and preparation method of filter paper |
| CN102995499A (en) * | 2012-10-31 | 2013-03-27 | 蚌埠首创滤清器有限公司 | Modified montmorillonite powder-containing filter paper 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 |
| CN104674452A (en) * | 2015-01-14 | 2015-06-03 | 上海特安纶纤维有限公司 | Filter material of blend fiber containing polyimide fiber and sulphone and manufacturing method thereof |
| 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 |
| CN104941317A (en) * | 2015-07-06 | 2015-09-30 | 江苏菲斯特滤料有限公司 | High temperature resistant filter material used for straw boiler or heating boiler and preparation method thereof |
| CN105401364A (en) * | 2015-11-30 | 2016-03-16 | 安徽省元琛环保科技有限公司 | Nanometer fiber surface layer filtering material after-treatment technology and 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 |
| CN108261838A (en) * | 2018-02-05 | 2018-07-10 | 安徽元琛环保科技股份有限公司 | A kind of special filtrate of waste incineration and its preparation method and application |
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