CN201692730U - Nano-photocatalyst-activated carbon fiber composite filter medium - Google Patents
Nano-photocatalyst-activated carbon fiber composite filter medium Download PDFInfo
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- CN201692730U CN201692730U CN2010201707125U CN201020170712U CN201692730U CN 201692730 U CN201692730 U CN 201692730U CN 2010201707125 U CN2010201707125 U CN 2010201707125U CN 201020170712 U CN201020170712 U CN 201020170712U CN 201692730 U CN201692730 U CN 201692730U
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Abstract
The utility model belongs to the technical field of air filter materials, and particularly relates to a nano-photocatalyst-activated carbon fiber composite filter medium, which is characterized in that the filter medium consists of nano-photocatalyst-activated carbon fiber non-woven cloth and a filter substrate. The filter medium can lead organic molecule aerosol which can not be captured by a conventional high-efficiency filter layer to be fast adsorbed by activated carbon particles of nano carbon fibers, is waterproof, does not drop carbon particles, and can be rolled with other materials to form various high-efficient filter media to be in combination usage. In addition, after being in adsorption saturation, a filter can be placed under sunlight or ultraviolet lamps to realize illumination regeneration, thereby greatly prolonging the service life of the total filter.
Description
Technical field
The utility model belongs to the air filting material technical field, be specifically related to a kind of nano photo-catalytic-activated carbon fiber composite filter media, be mainly used in the household electrical appliance filter element, be a kind ofly have high dust catching rate, gel powder with high adsorptive, antibiotic, deodorizing, water-fastly wash, the functional air filtering material of characteristic such as long-life.
Background technology
Along with the fast development of industry, traffic convenient fast and the going from bad to worse of environment, the use of various chemistry and biological products is more and more, be released in airborne pollutant and micro organism quantity or concentration and worsen day by day, various novel bacterials, disease is increasing and harmfulness is huge.In daily life, as room, kitchen, lavatory and public place etc., because the frequent life activity of people all can inevitably bring certain pollution to surrounding environment.According to the related data investigation, its airborne pollutant mainly contains H
2S, SO
2, CO, NH
3, the finishing these gases such as volatile solvent, oil smoke and sweat acid smell mostly exist with the molecule of gas phase.In addition, the stink that people's sense of smell can be differentiated mainly is the little molecular organic compound that contains ammonia nitrogen and sulfydryl sulfide (as hydrogen sulfide, mercaptan, thioether, isovaleric acid, amido and amino), and this class gas molecule diameter is all less than 0.3um usually.
Most of indoor air-purifier is a main purpose to remove visual particle mainly on the present stage market, and its screen pack mostly adopts HEPA level filter paper (99.97%@0.3um aerosol), and this class filter mainly is that the particle more than the 0.3um is carried out isolated by filtration.But effectively do not remove for the harmful aerosol less than 0.3um, the secondary pollution that causes influences our living environment once more.Therefore people press for various can long-term role, effectively remove indoor poisonous, pernicious gas, and do not produce the absorption high efficiency filter material of secondary pollution.
Although it is a variety of that the harmful aerocolloidal method of removal has, experience shows, adopts active carbon adsorption the most effective and rapid.Active carbon is made of crystallite charcoal and unformed charcoal as a kind of important carbon materials, contains the ash content that quantity does not wait, it is a kind of black porosu solid, the prosperity of voidage structure has huge specific area and superpower adsorption capacity, and specific area can be up to 1000-3000m
2/ g has very strong adsorption capacity to inorganic or organic substance and colloidal solid etc. in gas, the solution.The finiteness of active carbon specific area mainly occurs in the Gas Phase Adsorption field, owing to even have very high adsorptive value, after absorption a period of time, also can reach capacity with graininess, powdery, form such as fibrous.Therefore how active carbon is become renewablely, be a difficult problem always.
Because therefore disengaging non-caked and at random mutually between the activated carbon granule mainly uses with fluffy forms such as active carbon bag, adhesive active carbon nonwoven fabrics when designing and producing active carbon filter.But in the narrow and small filter element in space, be difficult to this class active carbon is effectively utilized.
In addition, conventional activated carbon filter layer all is non-renewable, if be used with some long-life high efficiency particulate air filters, the absorption life-span of its active carbon is well below the life-span of high efficiency filter filter paper, often a filter will be joined several activated carbon filter layers and satisfied the demands, and causes the rising and the inconvenience of customer using cost.
Summary of the invention
The purpose of this utility model provides a kind of filtration efficiency that both had, and has the long-life filtering material of renewable adsorption function again, a kind of nano photo-catalytic-activated carbon fiber composite filter media.
The technical solution of the utility model is:
Nano photo-catalytic-active carbon fiber composite filter medium is characterized in that described filter medium is made of nano photo-catalytic-activated carbon fiber non-woven cloth and filtering substrate.
Described nano photo-catalytic-activated carbon fiber non-woven cloth makes by spunbond or melt-blown process.
Described filtering substrate is a kind of of ptfe composite, melt-blown non-woven thing, polyester nonwoven thing.
The complex method of described nano photo-catalytic-activated carbon fiber non-woven cloth and filtering substrate is by hot rolling or gluing applying.
Described nano active charcoal is taken from bamboo charcoal or the shell charcoal after the pulverizing.
Concrete technology path of the present utility model is that nano photo-catalytic is deposited on the macrovoid inwall of the surface of carbon nano powder and powdered carbon by sedimentation, forms uniform photocatalyst-NACF composite particles; Again particle is mixed in proportion with carrier and make master batch, at last master batch and carrier are mixed in proportion put into spunbond, the non-woven fabrics apparatus spinned fiber such as melt and spray, make the surface of every fiber evenly be covered with composite particles, and high molecular vector resin play bonding, the fixedly effect of composite particles.The fiber that contains photocatalyst-active carbon composite particles of its spinning is evenly distributed in accepting on the curtain of adjustable-speed, through elevated temperature heat roll pressure point bonding, rolling, cut edge into containing 1.0-3.0wt% nano active charcoal, containing the fabric nonwoven cloth of 0.5-1.0wt% nano photo-catalytic of required grammes per square metre, at last this photocatalyst-activated carbon fiber non-woven cloth and high efficiency air-permeative filter base material are composited by technologies such as viscose glue, hot rollings, can be processed into various shape filter.
Usually filter is in order to reduce overall resistance and to improve dust containing capacity, the capital increases filter area with the pleating accordion that is processed into of material, and active carbon is to utilize its abundant specific area to come adsorbed gas, the gas of big more its absorption of volume is many more, and its adsorption mechanism depends on its abundant specific area.And general granular active carbon is because very loose and fluffy is difficult to the processing use that directly fits together of filtration filter paper with calendering, even widely used folder charcoal nonwoven on the market, also be because its fluffy thickness causes the non-renewable of the reduction of its effective area and active carbon, and can only under the particular environment space, use reluctantly.For the finiteness of non-renewable active carbon, also determined its to be difficult to reach the requirement of scrapping synchronously with long-life high efficiency filter layer combination owing to its adsorption area.
Adopt the utility model filter medium, the organic molecule aerosol that conventional efficient filter layer can't be captured is adsorbed very fast by the activated carbon granule of nano carbon fiber, because nano photo-catalytic-activated carbon granule is dispersed in the surface of carrier fibre, the carrier macromolecule plays the effect of fixing bonding nano particle, has the water-fast characteristic of washing, not falling the charcoal particle.
In addition, the every index of made nonwoven is near its pure carrier nonwoven index parameter, and this will be very beneficial for expanding nano photo-catalytic-activated carbon fiber non-woven cloth and other and roll all kinds of high-efficiency filtration media and be used in combination.In addition, nano active charcoal layer is placed in the outlet air surface of filter element usually in the use of reality, the Wave-shaped structural that its pleating material provided can facilitate for uviol lamp fully shines active carbon layer, more help the regeneration operation of active carbon layer, help active carbon layer and obtain higher regeneration rate.
The regeneration principle of the utility model nano photo-catalytic-NACF is as follows:
Under the irradiation of ultraviolet light,
1. the surface or the inside, large aperture of its active carbon after a period of time absorption of the nano active charcoal on nano photo-catalytic-NACF are covered with the organic gas molecule;
2. be carried on photocatalyst in activated carbon surface and the large aperture under the effect of ultraviolet light, electronics generation transition on the photocatalyst conduction band generates hole-duplet, and spreads to photocatalyst surface;
3. hole-electronics produces at the photocatalyst outer surface and induces absorption, respectively with the OH of the organic gas of activated carbon surface
-And O
2Effect produces extremely strong activity hydroxy-OH and the super oxygen particle O of oxidisability
2 -
4. because activity hydroxy-OH and super oxygen particle O
2 -Strong oxidation, being adsorbed on the adsorbate that the active carbon outer surface is positioned at around the photocatalyst at first degrades, in the photo reversal process of active carbon, ultraviolet light can shine directly into the photocatalyst of institute's load in the active carbon macropore, adsorbed organic matter is upright around it connects by photocatalytic degradation, pollution organic substance concentration in the macropore is reduced, form the active carbon macropore concentration difference of organic adsorbate on every side.Under the effect of concentration difference, the adsorbate in the activated carbon capillary spreads in mesopore and macropore, and photocatalyst is proceeded the degraded of the organic pollution materials in the macropore.Through some intermediate steps, be decomposed into small-molecule substance gradually, finally be decomposed into H
2O, CO
2And harmless salt.
Practice shows that the utility model is the composite filter media that basic framework is made with nano photo-catalytic-activated carbon fiber nonwoven, and made filter saturatedly is placed on illumination and regeneration operation under the sun or the uviol lamp through adsorbing, and organic gas is resolved into CO
2Thereby make active carbon obtain living again with water, nano photo-catalytic-acf layer has recovered its adsorptivity again.This will prolong the service life of monolithic filter greatly.
It is nano photo-catalytic-activated carbon composite particles of 100-800nm that technical solutions of the utility model preferably adopt particle diameter, and wherein the particle diameter of nanocarbon particle is 300-800nm, and specific area is greater than 2000m
2/ g, iodine sorption value is greater than 1000mg/g; The nano photo-catalytic diameter that adopts is 5-20nm, and nano photo-catalytic-activated carbon fiber diameter is 1-5um.
Nano photo-catalytic of the present utility model-activated carbon fiber nonwoven is the adsorption filtration layer, can be combined into composite filter media with the filtering material of any different efficient, different stiffness, different-thickness, all can be configured any desired filtered version, for example: filter cylinder, square position, filling, plate, bag and bag.Inside in said structure, this medium basically can by pleating, curl or place supporting construction.Composite filter media of the present utility model can be used for any traditional structure, comprise flat-panel filter, elliptical filter, cartridge filter, coiled coil shape filtration device structure, and can be used for the Z type filter, V-bank of pleated or other comprise that this medium becomes the geometrical construction of useful shape or profile.
Description of drawings
Fig. 1 is the utility model nano photo-catalytic-activated carbon fiber composite filter media hot pressing compound section structural representation
Fig. 2 is the utility model nano photo-catalytic-activated carbon fiber composite filter media adhesive compound section structural representation
Wherein: nano photo-catalytic-activated carbon fiber nonwoven 1, stiffening air-permeative filter base material 2, hot rolling point 3, adhesive 4.
The specific embodiment
Below by some examples the utility model is elaborated.
Nano photo-catalytic-activated carbon fiber and highly efficient gas permeable filtering material compound; the structure cutaway view as depicted in figs. 1 and 2; wherein the arrow direction is an airflow direction; it is to be noted; the present invention not only is confined to the complex method of cited nano photo-catalytic-activated carbon fiber of embodiment and highly efficient gas permeable filtering material, every utilize nano photo-catalytic-activated carbon fiber and highly efficient gas permeable filtering material compound all should think fall into protection domain of the present utility model.
Embodiment 1
One deck PET nonwoven A0 as supporting layer, is adopted one deck nylon 30g/m
2Nano Silver-compound the A1 that is prepared into of the direct hot pressing of cocoanut active charcoal fabric nonwoven cloth E.Its composite air permeability of the compound back test of material hot pressing, filter efficiency, resistance and iodine sorption value data are as shown in table 1.
One deck melt spraying non-woven fabrics B0 as supporting layer, is adopted one deck polypropylene 30g/m
2Nano zine oxide-compound the B1 that is prepared into of the direct hot pressing of active bamboo fabric nonwoven cloth F, its composite air permeability of the compound back test of material hot pressing, filter efficiency, resistance and iodine sorption value data are as shown in table 1.
The composite filter material C0 that one deck is contained the polytetrafluoroethylene (PTFE) breathable films adopts one deck terylene 30g/m as supporting layer
2Nano-titanium oxide-active bamboo (TiO
2/ BC) the compound C1 that is prepared into of the direct hot pressing of fabric nonwoven cloth G.Its composite air permeability of the compound back test of material hot pressing, filter efficiency, resistance and iodine sorption value data are as shown in table 1.
One deck PET nonwoven A0 as supporting layer, is adopted one deck nylon 30g/m
2Nano Silver-cocoanut active charcoal fabric nonwoven cloth E is by the compound A2 that is prepared into of adhesive.Its composite air permeability of the compound back test of material hot pressing, filter efficiency, resistance and iodine sorption value data are as shown in table 1.
Embodiment 5
One deck melt spraying non-woven fabrics B0 as supporting layer, is adopted one deck polypropylene 30g/m
2Nano zine oxide-active bamboo (ZnO/BC) fabric nonwoven cloth F is by the compound B2 that is prepared into of adhesive.Its composite air permeability of the compound back test of material hot pressing, filter efficiency, resistance and iodine sorption value data are as shown in table 1.
Embodiment 6
The composite filter material C0 that one deck is contained the polytetrafluoroethylene (PTFE) breathable films adopts one deck terylene 30g/m as supporting layer
2(TiO
2/ BC) fabric nonwoven cloth G is by the compound C2 that is prepared into of adhesive.Its composite air permeability of the compound back test of material hot pressing, filter efficiency, resistance and iodine sorption value data are as shown in table 1.
Table 1 test result contrast table
| The material model | Gas permeability [l/ (m 2.s)] | Resistance (Pa) | Filter efficiency (@0.3um NaCl%) | Iodine sorption value (mg/g) |
| A0 | 125 | 35 | 56 | 0 |
| A1 | 115 | 37 | 57 | 115 |
| A2 | 120 | 38 | 57 | 120 |
| B0 | 85 | 58 | 95 | 0 |
| B1 | 83 | 63 | 97 | 105 |
| B2 | 82 | 62 | 96 | 110 |
| C0 | 17 | 265 | 99.985 | 0 |
| C1 | 18 | 275 | 99.99 | 125 |
| C2 | 18 | 280 | 99.985 | 108 |
By above correction data as can be seen: nano photo-catalytic-activated carbon fiber material and any highly efficient gas permeable filtering material are compound, and its complex method and carrier do not influence its adsorptive value to organic gas.
Choose prepared in the above-described embodiments B1 and C2 and 30g/m
2TiO2/BC fabric nonwoven cloth (F) material is as nano photo-catalytic-NACF photocatalysis regeneration tests, method of testing and step:
1. with 0.5m
2Material is put into 1 cubic metre of standard thermostatic constant humidity test box.
2. feed 100 grades of pure airs and enter container 8-10 minute, the test container presence of pollution sources need be lower than the instrument test limiting value.
3. logical micro pressure gas will be analyzed pure formaldehyde and import in the experimental box, open then and make its even dispersion in agitation fan 1-2 minute.Test the initial concentration of its formaldehyde with automatic concentration of formaldehyde analyzer
4. test the concentration of formaldehyde value with automatic concentration of formaldehyde analyzer every 6hr, test its initial concentration value with the carbon dioxide tester, and then carry out regeneration reducing with ultra violet lamp laboratory sample 2hr, gas concentration lwevel value after degrading with carbon dioxide tester test material again, and fill in relevant parameter and calculate adsorption rate
5. refill formaldehyde gas and carry out adsorption test, carry out associative operation and fill in a form according to step 3 step 4
Table 2 regeneration tests tables of data
Table 3 B1 photocatalysis regeneration tests tables of data
Table 4 C2 photocatalysis regeneration tests tables of data
Annotate: the carbon dioxide recruitment is considered to all be generated by Degradation Formaldehyde
We can draw by above-mentioned experiment: greater than more than 95%, its regeneration rate can maintain 90% higher level along with regeneration times increase regeneration rate slightly reduces to nano photo-catalytic-NACF air filtration media to organic pollution 6hr purifying rate.
Claims (6)
1. nano photo-catalytic-active carbon fiber composite filter medium is characterized in that described filter medium is made of nano photo-catalytic-activated carbon fiber non-woven cloth and filtering substrate.
2. composite filter media according to claim 1 is characterized in that described nano photo-catalytic-activated carbon fiber non-woven cloth makes by spunbond or melt-blown process.
3. composite filter media according to claim 1 is characterized in that described filtering substrate is a kind of of ptfe composite, melt-blown non-woven thing, polyester nonwoven thing.
4. composite filter media according to claim 1, the complex method that it is characterized in that described nano photo-catalytic-activated carbon fiber non-woven cloth and filtering substrate are by hot rolling or gluing or ultrasonic wave applying.
5. composite filter media according to claim 1 is characterized in that described nano photo-catalytic is nano titanium oxide, nano zine oxide or Nano Silver.
6. composite filter media according to claim 1 is characterized in that bamboo charcoal or shell charcoal after described nano active charcoal is taken from pulverizing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201707125U CN201692730U (en) | 2010-04-26 | 2010-04-26 | Nano-photocatalyst-activated carbon fiber composite filter medium |
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| CN2010201707125U CN201692730U (en) | 2010-04-26 | 2010-04-26 | Nano-photocatalyst-activated carbon fiber composite filter medium |
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| CN201692730U true CN201692730U (en) | 2011-01-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103285665A (en) * | 2013-03-28 | 2013-09-11 | 卢普伦 | A fiber filter material |
| CN103610432A (en) * | 2013-11-27 | 2014-03-05 | 苏州凯丽达电器有限公司 | Multifunctional filter screen of dust collector |
| CN106178686A (en) * | 2016-07-29 | 2016-12-07 | 爱芯环保科技（厦门）股份有限公司 | Composite Nano photocatalyst electrospinning fibre filter material and preparation method thereof |
| CN107138156A (en) * | 2017-05-24 | 2017-09-08 | 黄丽英 | Except formaldehyde photocatalyst preparation |
-
2010
- 2010-04-26 CN CN2010201707125U patent/CN201692730U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103285665A (en) * | 2013-03-28 | 2013-09-11 | 卢普伦 | A fiber filter material |
| CN103610432A (en) * | 2013-11-27 | 2014-03-05 | 苏州凯丽达电器有限公司 | Multifunctional filter screen of dust collector |
| CN106178686A (en) * | 2016-07-29 | 2016-12-07 | 爱芯环保科技（厦门）股份有限公司 | Composite Nano photocatalyst electrospinning fibre filter material and preparation method thereof |
| CN107138156A (en) * | 2017-05-24 | 2017-09-08 | 黄丽英 | Except formaldehyde photocatalyst preparation |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: Hangzhou City, Zhejiang province Binjiang District 310023 shore road 1197 building 7 room 316 Patentee after: HANGZHOU FILTECH INTELLIGENT CO., LTD. Address before: 311114 3 blocks of Jing Feng Feng Industrial Zone, Yuhang District, Zhejiang, Hangzhou Patentee before: Hangzhou CACL Technology Co., Ltd. Address after: Hangzhou City, Zhejiang province Binjiang District 310023 shore road 1197 building 7 room 316 Patentee after: HANGZHOU FILTECH INTELLIGENT CO., LTD. Address before: 311114 3 blocks of Jing Feng Feng Industrial Zone, Yuhang District, Zhejiang, Hangzhou Patentee before: Hangzhou CACL Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110105 |
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| CX01 | Expiry of patent term |