CN101406779A - Filter material containing polyphenylene sulfide fiber and use - Google Patents
Filter material containing polyphenylene sulfide fiber and use Download PDFInfo
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- CN101406779A CN101406779A CNA2007101342631A CN200710134263A CN101406779A CN 101406779 A CN101406779 A CN 101406779A CN A2007101342631 A CNA2007101342631 A CN A2007101342631A CN 200710134263 A CN200710134263 A CN 200710134263A CN 101406779 A CN101406779 A CN 101406779A
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Abstract
The invention discloses a filter material containing polyphenyl thioether fiber reinforcing fabric and application thereof. The filter material consists of polyphenyl thioether fiber reinforcing fabric and non-woven cloth of a filter surface layer containing a fibril layer. The filter material is applied to preparing a filter bag. The filter material has the advantages of good mechanical shock resistance, good filter performance, and long service life.
Description
Technical field:
The present invention relates to a kind of filtering material and purposes.
Background technology:
The filtering material of Purge gas has the filtering material of in-depth filtration and the filtering material of surface filtration, and dust removal machine uses the surface filtration filtering material.So-called surface filtration is to capture dust on the filtering material surface, form dust layer on the filtering material surface, capture dust gradually by this dust layer, when thickness that dust layer acquires a certain degree, just remove the dust on filtering material surface, form the filtration that the operation of dust layer is carried out repeatedly on the filtering material surface again by compressed air.
As being configured for filtering from briquette boiler, the fiber of the filtering material of the high-temperature exhaust air that incinerator or Metal Melting furnace etc. are discharged, use is by hear resistance and good polyphenylene sulfide (the being designated hereinafter simply as PPS) fiber of chemical proofing, meta-aromatic polyamide fiber (meta-aramid fibers), the PTFE fiber, polyimide fiber, glass fibre, the filtering material that non-woven fabrics such as basalt fibre constitute.Especially the PPS fiber has good hydrolysis, acid resistance and alkali resistance, and therefore extensive dust removal and filtration bag as briquette boiler uses.
Nearest in addition country has proposed the requirement of energy-saving and emission-reduction, because briquette boiler is main pollution sources, therefore requires more low emission.Just require the dust pelletizing system of high arresting efficiency.Energy-conservation aspect also requires to cut down the consumption of energy simultaneously, for the bag-type dusting machine, cut down the consumption of energy and have only the pressure loss that reduces dust removal machine, just will reduce the pressure loss of filter bag.Further, because this high-temperature-resistant filtering material and keel are used, be to use pulse of air to jet in the process of deashing, therefore it should have very strong mechanical strength except wanting chemical resistance and temperature tolerance.
Openly inventing among the CN1712100, mentioning and use glass fibre as strengthening fabric, though glass fibre has very high temperature tolerance, because the folding resistance of glass fibre is relatively poor, its shock-resistant ability is relatively poor, therefore can influence its service life.Because the diameter of the fibrolaminar fiber of composition filtering surface is too little, though can improve the arresting efficiency of filtering material, abrasion performance is relatively poor simultaneously.Therefore in the use of reality, there is defective.
Summary of the invention:
It is good to the purpose of this invention is to provide a kind of strainability, and the pressure loss is low, the filtering material that contains polyphenylene sulfide fibre and the purposes of long service life.
Technical solution of the present invention is:
A kind of filtering material that contains polyphenylene sulfide fibre, it is characterized in that: form filtering material and have three-decker at least, filtering surface, non-filtering surface, middle reinforced textile wherein contains the fine fiber layer that one deck is made up of between the fine fibre of 3-12 μ m average diameter at least in the filtering surface; Middle reinforced textile is the fabric of polyphenylene sulfide or polytetrafluoroethylene (PTFE); Non-filtering surface is the fibrous fibrage of diameter greater than 12 μ m.
The throughput of this filtering material is at 5-30cc/cm
2.s.
The average diameter of other fibrage fiber exists beyond this filtering material fine fiber layer
Between the 10-40 μ m.
The grammes per square metre of this filtering material is between 300-800g/m2.
The voidage of this filtering material is at 0.60-0.90.
Reinforced textile in this filtering material is made of polyphenylene sulfide fibre.
This filtering material can be used for filter bag.
The strainability of filtering material of the present invention is good, and the pressure loss is low, long service life.
The invention will be further described below in conjunction with embodiment.
Specific implementation method
Describe the present invention below in detail.
At first, this filtering material contains the reinforced textile of polyphenylene sulfide or polytetrafluoroethylene fibre composition, and here the reinforced textile of polyphenylene sulfide is the woven scrim in the middle of two layer web, works to increase filtering material intensity in filtering material.It is very important to contain polyphenylene sulfide reinforced textile this point in the filtering material, in the use of real machine, filtering material will stand the impact of several ten thousand subpulse air, therefore play the necessary intensity of the reinforced textile of framework material and want high, simultaneously good fatigue durability to be arranged, can mate the long-term usability of filtering material.Therefore these materials should be polyphenylene sulfides, polytetrafluoroethylene (PTFE), the reinforced textile that materials such as meta-aramid are formed, the reinforced textile that preferred polyphenylene sulfide and polytetrafluoroethylene fibre form, consider the reason of cost, the more preferably reinforced textile that is made of polyphenylene sulfide fibre, forming this reinforced textile in addition can be long filament, also can be the reinforced textile that short fiber constitutes.
Secondly contain the fibrage that one deck is made up of less than the fine fibre of 12 μ m average diameter at least on the filtering surface of this filtering material.Here the face of filtering material is meant the filtering surface and the non-filtering surface of filtering material, and filtering surface is meant the one side of direct contact dusty gas, and non-filtering surface is meant the one side of the face that pure air is got rid of.The average diameter of filtering the surface layer fiber here is very important less than 12 μ m, the little while of average pore size according to the thin more formation filtering material of fiber of the theoretical surface of filtering is even, being beneficial to provides arresting efficiency, stop dust to enter the inside of filtering material simultaneously, therefore also can reduce the pressure loss.Here the fibrous fibrage less than 12 μ m can be the whole surface layer of filtering surface, it also can be a part in the filtering surface that covers on other fibrages, be relatively to be fit to for the diameter of forming this fibrage fiber between 3-12 μ m in addition, fibre diameter is during less than 3 μ m, the abrasion performance of the fiber web layer of forming is not enough, can not resist dust and wash away.The average diameter of optimum fiber is at the fiber of 5-12 μ m.Under the situation of fine fiber layer for the layer of covering, fibrage between fine fiber layer and reinforced textile interlayer, owing to be to play a part to present to remove, therefore, the diameter of the fiber formed of the fleece of level fibrous below 20 μ m more than the 12 μ m hereto, can be the mixing of several fibers, also can be single fibrous.For the fibrage of non-filtration face, consider its abrasion performance, select outstanding fibrous of abrasion performance, the fiber of optimum fiber diameter more than 12 μ m.Consider the arresting efficiency that increases filtering material, can in the fiber more than the 20 μ m, mix the fiber below the 20 μ m.Content (with respect to whole filtering material) for fine fiber layer is suitable between 10% to 70%, amount does not have the effect that improves arresting efficiency less than 10%, amount is disadvantageous greater than 70% for reducing the pressure loss, consider that the problem of cost is preferred 10% to 50%, more preferably 10%-40%.
For the raw material that constitutes this filtering material fiber layer, preferably heat resistant fibre comprises: polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), meta-aramid, polyimides, glass fibre, its chlorinated polypropylene cyanogen fiber, basalt fibre etc.Preferred polyphenylene sulfide and PTFE and meta-aramid, more preferably polyphenylene sulfide and PTFE.Here the average diameter of indication fiber is to gather the diameter of 50 fibers by ESEM, calculates its mean value then.Here polyphenylene sulfide is meant that (being designated hereinafter simply as PPS) fiber is the 90wt% of its component unit or contains more than the 90wt%-(C
6H
4-S)
nThe fiber that the polymer of the phenylene sulfide construction unit of-expression constitutes.Here adhesive-bonded fabric is meant short fiber or long filament is carried out orientation or random alignment, forms fibre net structure, adopts methods such as mechanical, hot sticky or chemistry to reinforce then and forms, and it is spunbond that concrete processing method has, acupuncture, processing methods such as water thorn.Here selecting for use of adhesive-bonded fabric is very important, because each of adhesive-bonded fabric material to the colleague, therefore can adapt to the long-term useful life longevity of filtering material, considers that filtering material is used for briquette boiler, so the method for preferred water thorn and acupuncture, the more preferably method of acupuncture.
Secondly, the throughput of this filtering material is at 5-30cc/cm
2.s, this point is crucial, and the pressure loss of the too small filtering material of throughput is bigger, is what not satisfy for the requirement of the filter bag that is used in dust removal machine.Increase filter area simultaneously, increased the size of dust removal machine, also increased cost.Therefore throughput is less than 5cc/cm
2.s be not preferred.Excessive for throughput, the average pore size of filtering material and voidage are all bigger, cause dust to enter filtering material inside easily, stop up filtering material, cause the significantly raising of the pressure loss, reduce the service life of filtering material; Do not satisfy for the requirement of arresting efficiency simultaneously, so throughput is greater than 30cc/cm
2.s also be not preferred.Therefore throughput is at 5-30cc/cm
2.s be necessary, consider arresting efficiency and the overall balance of pressing ground to lose, preferred 5-25cc/cm
2.s, more preferably 10-20cc/cm
2.s.
The average diameter of other fibrage fiber is between 10-40 μ m beyond this filtering material fine fiber layer.Here can be single fiber, also can be the mixing of several fibers.Be very important to defining of fibre diameter here, fibre diameter forms fibrolaminar insufficient strength less than 10 μ m, can not satisfy the abrasion requirement with keel.Here keel are meant: the irony frame structure that supports filtering material.Increased cost simultaneously, for fibre diameter greater than 40 μ m, though can improve fibrolaminar intensity, but,, cause that the aperture of fine fiber layer becomes big because crude fibre can be brought in the fine fiber layer in process of production, form fibrolaminar voidage and aperture and become big, dust is invaded filtering material inside easily, improves the pressure loss, and arresting efficiency is also low simultaneously.The average pore size that forms is inhomogeneous, influences the flow distribution of flue gas, and the dust that has therefore had influence on filtering material distributes.
The grammes per square metre of this filtering material is at 300-800g/m
2Between.Here the grammes per square metre of filtering material is very important, and grammes per square metre is too small, and the intensity of filtering material can not get guaranteeing, when the intensity of filtering material is excessive, has increased the cost of filtering material, also is unfavorable for the operation of dust removal machine simultaneously.Preferred 400-700g/m
2, consider that the surface contains fine fiber layer, more preferably 400-600g/m
2, grammes per square metre is too small, the insufficient strength of filtering material, and simultaneously, also having for filter efficiency can influence.The grammes per square metre of filtering material is greater than 800g/m
2The time, the cost of its filtering material strengthens, simultaneously, filtering material the pressure loss also bigger, be favourable for the dust removal machine and the aspect that cuts down the consumption of energy.Here grammes per square metre is meant the weight of unit are filtering material.
The voidage of this filtering material is at 0.60-0.90.For the voidage of filtering material, the voidage of filtering material is excessive, and the voidage of filtering material is too small, and the pressure loss is bigger, is unfavorable for applying in the dust removal machine, and when voidage was too small, the arresting efficiency of filtering material was too small, can not satisfy emission standards.In addition, voidage is too small, influences the intensity of filtering material.The complexing of fiber and fiber is poor, has influenced the intensity of filtering material.The intensity of filtering material is on the low side, influences its service life, and in addition, voidage is excessive, and dust is invaded filtering material inside easily, and dust is not easy to be gone out clearly when deashing, and along with the operation of time, the pressure loss of filtering material can significantly raise.Voidage is low excessively, between the fibrage and the associativity of fibrage and enhancing fabric.Reduce its intensity.Influence its service life.The definition of voidage here is meant: the volume ratio that air occupies in the unit volume of filtering material.
Below, illustrate in greater detail the present invention by embodiment, but the present invention is not subjected to the restriction of these embodiment.
The assay method of each rerum natura of filtering material is as follows.
[throughput]
Measure the throughput of filtering material based on the Fu Leize type fabric breathability method of testing of JISL 1096 regulations.Measuring the position is to select measure at random at 6.
[VDI3926 arresting efficiency]
Based on the performance of the standard test filtering material of VDI3926, the size of laboratory sample is Φ 150mm, and the dust concentration of feeding is at 5g/m
3, filtration velocity is 2m/min.The order of experiment is initial stage 30 times+stabilisation 5000 times+last 30 times.Initial stage here 30 times and last 30 times method are, prolongation along with running time, the pressure reduction on filtering material two sides can raise gradually, when arriving 1000Pa, pulse of air is carried out deashing to the dust on filtering material surface, carries out next process then, and this process is carried out 30 times altogether, record pressure and the variation of time in the process of experiment, detection simultaneously is not filtered the concentration of the dust of material capture.Stabilization procedures is meant in the process of operation, is the time interval filtering material to be carried out deashing with 5s, carries out altogether 5000 times.Here the pressure of the deashing of indication is 5bar.
Embodiment 1
Use the PPS short fiber (Dongli Ltd.'s system " Te Kang ") of fiber number 2.2 dtexs (average fibre diameter 14.5 μ m), coupe 51mm, obtain warp thread 20S/2, weft yarn 20s.Make its plain weave, obtain the PPS staple yarn plain cloth of 30/2.54cm of warp count, 14/2.54cm of weft count.
With this fabric as base cloth, on face of fabric with 110g/m
2The stacked fleece of weight per unit area, this fleece is after the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-1.0T 51mm) of fiber number 1.0 dtexs (average fibre diameter 9.7 μ m), coupe 51mm is implemented opener, comb and parallel cotton fibers prior to spinning processing, with 50/cm of thorn pin density
2Carrying out acupuncture obtains.To obtain fiber number with same method be 2.2 dtexs (Dongli Ltd.'s system " Te Kang " S301-2.2T 51mm) 110g/m to one deck below this fiber
2The stacked fleece of weight per unit area, form the filter course of filtering surface one side in this two layer web.On the face of the opposite side of fabric with 210g/m
2The stacked following fleece of weight per unit area, this fleece is that PPS short fiber (Dongli Ltd.'s system " Te Kang " S101-7.8T76mm) 100wt% with fiber number 7.8 dtexs (average fibre diameter 27 μ m), coupe 76mm carries out after opener, comb and parallel cotton fibers prior to spinning handle, with 50/cm of thorn pin density
2Carrying out acupuncture obtains.This fleece forms the filter course of non-filtering surface one side.Further fabric (base cloth) and above-mentioned fleece are interweaved, obtain weight per unit area 540g/m by acupuncture processing
2, total 300/cm of needling density
2Filtering material, carry out thermal finalization then and handle, in addition, in the filtering material that this obtains, see because the acupuncture processing shrinks, weight per unit area is than the tendency that uprises in theory.
Embodiment 2
Method similarly to Example 1 obtains, and forming structure is that filtering surface is 220g/m
2Fleece, this fleece is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-1.0T 51mm) of fiber number 1.0 dtexs (average fibre diameter 9.7 μ m), coupe 51mm constitutes; Non-filtering surface is 210g/m
2Fleece, this fleece is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S101-7.8T76mm) of fiber number 7.8 dtexs (average fibre diameter 27 μ m), coupe 76mm constitutes.
Embodiment 3
Method similarly to Example 1 obtains, and forming structure is that filtering surface is 220g/m
2Fleece, this fleece is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-1.0T 51mm) of fiber number 1.0 dtexs (average fibre diameter 9.7 μ m), coupe 51mm constitutes; Non-filtering surface is by 100g/m
2Fiber number be PPS short fiber (Dongli Ltd.'s system " Te Kang " S101-7.8T 76mm) and the 110g/m of 7.8 dtexs (average fibre diameter 27 μ m), coupe 76mm
2Fiber number is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-2.2T 51mm) of 2.2 dtexs (average fibre diameter 14.5 μ m), coupe 51mm mixes formation.
Embodiment 4
Method similarly to Example 1 obtains, and forming structure is that filtering surface is 110g/m
2Fiber number is PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-1.0T 51mm) and the 110g/m of 1.0 dtexs (average fibre diameter 9.7 μ m), coupe 51mm
2Fiber number is that PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-2.2T 51mm) layering of 2.2 dtexs (average fibre diameter 14.5 μ m), coupe 51mm constitutes; Non-filtering surface is by 100g/m
2Fiber number be PPS short fiber (Dongli Ltd.'s system " Te Kang " S101-7.8T 76mm) and the 110g/m of 7.8 dtexs (average fibre diameter 27 μ m), coupe 76mm
2Fiber number is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-2.2T 51mm) of 2.2 dtexs (average fibre diameter 14.5 μ m), coupe 51mm mixes formation.
The filtering material that contains polyphenylene sulfide fibre that embodiment 1～4 obtains can be used to make filter bag.
Comparative example 1
Method similarly to Example 1 obtains, and forming structure is that filtering surface is 220g/m
2Fleece, this fleece is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-2.2T 51mm) of fiber number 2.2 dtexs (average fibre diameter 14.5 μ m), coupe 51mm constitutes; Non-filtering surface is 210g/m
2Fleece, this fleece is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S101-7.8T76mm) of fiber number 7.8 dtexs (average fibre diameter 27 μ m), coupe 76mm constitutes.
Comparative example 2
Method similarly to Example 1 obtains, and forming structure is that filtering surface is 220g/m
2Fleece, this fleece is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-2.2T 51mm) of fiber number 2.2 dtexs (average fibre diameter 14.5 μ m), coupe 51mm constitutes; Non-filtering surface is 210g/m
2Fleece, this fleece is that the PPS short fiber (Dongli Ltd.'s system " Te Kang " S301-2.2T 51mm) of fiber number 2.2 dtexs (average fibre diameter 14.5 μ m), coupe 51mm constitutes.
From table 1, evaluation result as can be known, the filtering material of embodiment 1～4 is compared with the filtering material of comparative example 1～2, dust catching efficient height, and the residual pressure of filtering material loss is also low.Further, embodiment 1,3,4 is better more, and more further, embodiment 1 is best.The arresting efficiency height of filtering material, the pressure loss does not uprise yet.Therefore be possible the service life that prolongs filtering material.
Table one
Claims (7)
1, a kind of filtering material that contains polyphenylene sulfide fibre, it is characterized in that: form filtering material and have three-decker at least, filtering surface, non-filtering surface, middle reinforced textile wherein contains the fine fiber layer that one deck is made up of between the fine fibre of 3-12 μ m average diameter at least in the filtering surface; Middle reinforced textile is the fabric of polyphenylene sulfide or polytetrafluoroethylene (PTFE); Non-filtering surface is the fibrous fibrage of diameter greater than 12 μ m.
2, the filtering material that contains polyphenylene sulfide fibre according to claim 1 is characterized in that, according to the throughput of JIS L 1096 these filtering materials of standard at 5-30cc/cm
2.s.
3, the filtering material that contains polyphenylene sulfide fibre according to claim 1 and 2 is characterized in that: the average diameter of other fibrage fiber is between 10-40 μ m beyond this filtering material fine fiber layer.
4, the filtering material that contains polyphenylene sulfide fibre according to claim 1 and 2, it is characterized in that: the grammes per square metre of this filtering material is between 300-800g/m2.
5, the filtering material that contains polyphenylene sulfide fibre according to claim 1 and 2 is characterized in that, the voidage of this filtering material is at 0.60-0.90.
6, the filtering material that contains polyphenylene sulfide fibre according to claim 1 and 2, it is characterized in that: the reinforced textile in the described filtering material is made of polyphenylene sulfide fibre.
7, the described application of filtering material in the preparation filter bag that contains polyphenylene sulfide fibre of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101342631A CN101406779B (en) | 2007-10-08 | 2007-10-08 | Filter material containing polyphenylene sulfide fiber and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101342631A CN101406779B (en) | 2007-10-08 | 2007-10-08 | Filter material containing polyphenylene sulfide fiber and use |
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| Publication Number | Publication Date |
|---|---|
| CN101406779A true CN101406779A (en) | 2009-04-15 |
| CN101406779B CN101406779B (en) | 2012-01-18 |
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626573A (en) * | 2012-03-27 | 2012-08-08 | 绍兴文理学院 | Filter composite layer and filter blocking net, and application method thereof |
| CN103768866A (en) * | 2012-10-19 | 2014-05-07 | 东丽纤维研究所（中国）有限公司 | Filter material with high capture efficiency, and application thereof |
| WO2018233650A1 (en) * | 2017-06-22 | 2018-12-27 | 东丽纤维研究所（中国）有限公司 | Filtering material |
| WO2023202649A1 (en) * | 2022-04-22 | 2023-10-26 | 东丽纤维研究所（中国）有限公司 | Spunlace non-woven fabric and filter material prepared therefrom |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100506347C (en) * | 2003-03-31 | 2009-07-01 | 东丽株式会社 | Filter medium |
| CN1793449A (en) * | 2005-12-29 | 2006-06-28 | 四川得阳科技股份有限公司 | Tech. polyphenyl thioether spinning |
-
2007
- 2007-10-08 CN CN2007101342631A patent/CN101406779B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626573A (en) * | 2012-03-27 | 2012-08-08 | 绍兴文理学院 | Filter composite layer and filter blocking net, and application method thereof |
| CN102626573B (en) * | 2012-03-27 | 2015-04-22 | 绍兴文理学院 | Filter composite layer and filter blocking net, and application method thereof |
| CN103768866A (en) * | 2012-10-19 | 2014-05-07 | 东丽纤维研究所（中国）有限公司 | Filter material with high capture efficiency, and application thereof |
| WO2018233650A1 (en) * | 2017-06-22 | 2018-12-27 | 东丽纤维研究所（中国）有限公司 | Filtering material |
| CN110603083A (en) * | 2017-06-22 | 2019-12-20 | 东丽纤维研究所（中国）有限公司 | Filtering material |
| WO2023202649A1 (en) * | 2022-04-22 | 2023-10-26 | 东丽纤维研究所（中国）有限公司 | Spunlace non-woven fabric and filter material prepared therefrom |
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|---|---|
| CN101406779B (en) | 2012-01-18 |
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Effective date of registration: 20160608 Address after: Japan Tokyo central Nihonbashi Muromachi 2-1-1 Patentee after: Toray Industries, Inc. Address before: 226009 Nantong Province Economic and Technological Development Zone, the New South Road, No. 58, No. Patentee before: Toray Fiber Research Institute (China) Co., Ltd. |
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Granted publication date: 20120118 Termination date: 20201008 |
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