CN103463971B - Based on the photocatalysis air cleaning device of dispersion fiber - Google Patents
Based on the photocatalysis air cleaning device of dispersion fiber Download PDFInfo
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- CN103463971B CN103463971B CN201310403899.7A CN201310403899A CN103463971B CN 103463971 B CN103463971 B CN 103463971B CN 201310403899 A CN201310403899 A CN 201310403899A CN 103463971 B CN103463971 B CN 103463971B
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- installing hole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The invention discloses the photocatalysis air cleaning device based on dispersion fiber, comprise filter element and photocatalysis unit, wherein filter element is tubular filter element, and radial cross-section is ring-type, and its upper/lower terminal is connected with bottom cover with top end cover respectively; The central authorities of top end cover are provided with gas outlet, and the surrounding in gas outlet is evenly provided with top installing hole; Bottom cover is evenly provided with bottom installing hole; Photocatalysis unit selects fibrous catalyst unit, and its one end and top installing hole are fixedly linked, and the other end and bottom installing hole are fixedly linked.Technical scheme of the present invention adopts 360 degree of side air inlets, the impact of the secondary pollution that the accessory substance that can effectively reduce light-catalyzed reaction brings, at HEPA, activated carbon fiber surface carried titanium dioxide simultaneously, while improving utilization rate of ultraviolet light, effective raising air purification efficiency, be applicable to aircraft, subway, train, factory etc. close, inflammable and explosive environment.
Description
Technical field
The invention belongs to technical field of air purification, more particularly, relate to the photocatalysis air cleaning device utilizing light-catalyzed reaction to the harmful substance high-efficient purification in air.
Background technology
Along with global modernization is carried out and the improving constantly of material spirit civilization, the environmental pollution brought by industrialization and ecological disruption are subject to everybody and extensively pay attention to.Expert have developed multiple air cleaning unit both at home and abroad for this reason, improves living environment around in order to improve.At present, the air cleaning system used both at home and abroad adopts active carbon adsorption technology, ozone purification technology, anion dedusting technology, high voltage electrostatic technique and photocatalysis technology mostly.In recent years, photocatalysis purifying technology obtains extensive research and development because of advantages such as efficient low-consume, safety non-toxic, sterilization and deodorizations.
Photocatalysis air-cleaning technology based semiconductor is theoretical, the principle of its degradation of contaminant is: when its photon energy is more than or equal to the energy gap of semi-conducting material, photo-generate electron-hole pair can be formed, when it is moved to catalyst surface, that can effectively be oxidized or reduction adsorption at the pernicious gas molecule of catalyst surface, and be the material such as nontoxic water and carbon dioxide by its thorough mineralising.Find through patent retrieval, the patent of photocatalysis purifying technology has: China Patent No. 1486778A, and name is called: photocatalysed purifier; China Patent No. 1605808A, name is called: photocatalysis air purifying device etc.Existing photo catalysis reactor mostly adopts ultraviolet lamp tube as direct light source, inevitable electricity, heat contact with the direct of working environment, mainly for room air, cannot be applicable to that aircraft, subway, train, factory etc. close, inflammable and explosive environment, and cannot solve that photocatalytic process catalytic efficiency is low, secondary pollution problems.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of photo-catalysis air purifying apparatus based on dispersion fiber is provided, and the impact of the secondary pollution that the accessory substance that binding activities charcoal adsorption technology can effectively reduce light-catalyzed reaction brings, at HEPA, activated carbon fiber surface carried titanium dioxide simultaneously, while improving utilization rate of ultraviolet light, effective raising air purification efficiency, be applicable to aircraft, subway, train, factory etc. close, inflammable and explosive environment.
Technical purpose of the present invention is achieved by following technical proposals:
Based on the photocatalysis air cleaning device of dispersion fiber, comprise filter element and photocatalysis unit, wherein:
Described filter element is tubular filter element, and its radial cross-section is ring-type, and has certain altitude, and its upper/lower terminal is connected with bottom cover with top end cover respectively;
The central authorities of described top end cover are provided with gas outlet, are connected with pump by pipeline; Surrounding in described gas outlet is evenly provided with top installing hole; Described bottom cover is evenly provided with bottom installing hole;
Described photocatalysis unit selects fibrous catalyst unit, and its one end and the top installing hole be arranged on top end cover are fixedly linked, and the other end and the bottom installing hole be arranged on bottom cover are fixedly linked.
In technique scheme, described filter element selects HEPA filter element, can contaminant particle in effectively catching air; Described HEPA filter element is cylindrical structure, and its surface is fold-type cellular structures; The material of described HEPA filter element selects PP filter paper, glass fibre, the composite filter paper be made up of PP and PET or NACF, and described cellular structures mesothyrid is chosen as triangle, square, polygon, circle or corrugated.
In technique scheme, described top installing hole is arranged on top end cover with concentric circular fashion, namely in top end cover institute in the plane, be uniformly distributed along 360 degree of circular arcs, with top end cover center for the center of circle, spaced set some circle tops installing hole in the radial direction of top end cover, such as 3-6 circles; Described bottom installing hole is arranged on bottom cover with concentric circular fashion, namely in bottom cover institute in the plane, is uniformly distributed along 360 degree of circular arcs, with bottom cover center for the center of circle, and spaced set some circle bottoms installing hole in the radial direction of bottom cover, such as 3-6 circles; The projection of described top installing hole and bottom installing hole in the vertical direction is consistent.
In technique scheme, described fibrous catalyst unit is vertically connected with top end cover, bottom cover, and parallel with tubular filter element.
In technique scheme, described fibrous catalyst unit is evenly distributed in the space formed by filter element, top end cover and bottom cover.
In technique scheme, described fibrous catalyst unit is made up of dispersion fiber and NACF, and described dispersion fiber is used for being connected with top installing hole, bottom installing hole, and described NACF is wrapped in the skin of dispersion fiber.
In technique scheme, the surface of described NACF is provided with titanium dioxide photocatalyst layers, or load there is titanium dioxide optical catalyst.
In technique scheme, the inner wall surface of described tubular filter element is provided with titanium dioxide photocatalyst layers, or load there is titanium dioxide optical catalyst.
In technique scheme, the titanium dioxide that described titanium dioxide optical catalyst selects the flaky nanocrystalline of titanium dioxide, nanotube, nano wire, Graphene and composite titania material or platinum doping to retrofit, described titanium dioxide optical catalyst is carried out load by following method on NACF surface, such as Best-Effort request, magnetron sputtering, colloidal sol-gel.After load, Structure of Activated Carbon Fibers possesses larger titanium dichloride load area, can improve the efficiency that pollutants in air is removed in photocatalysis, simultaneously because active carbon itself has stronger suction-operated, the secondary pollution that can effectively avoid light-catalyzed reaction to produce is on the impact of environment.
Above-mentioned when carrying out preparation and the load of titanium dioxide optical catalyst, with reference in prior art about the preparation method of dissimilar titanium dioxide and carrying method thereof, such as
(1) flaky nanocrystalline:
Synthesis and Characterization of TiO
2Nano-crystalline with Differ ent Morphologies byLow-temper atur e Hydrothermal Method；ZHANG Xia，ZHAO Yan，ZHANG Cai-Bei，MENGHao；ActaPhys.-Chim.Sin.，2007，23(6):856-860
(2) Graphene and composite titania material:
Preparation and photoactivity of graphene/TiO
2hybrid photocatalysts under visible lightirraditon;LIU Hui，DONG Xiao-nan，SUN Chao-chao;Journal of Shaannxi University ofScience&Technolog:1000-5811(2013)01-0023-06
(3) titanium dioxide of platinum doping remodeling:
Photocatalytic Activity of TiO
2Thin Film Doped by Ptwith Different Distribution;WANG，Jun-GangLI，Xin-Jun，ZHENG，Shao-JianHE，Ming-XingXU;ACTA CHIMICA SINICANo.7,592～596
(4) nanotube:
Research Advances in TiO
2Nanotubes;Kong Xiangrong，Peng Peng，Sun Guixiang，ZhengWenjun;ACTA CHIMICA SINICANo.8，1439～1444
(5) nano wire:
Recent Process in Metal-doped Titanium Oxide Nanowires; DU Jun, SHI Jiaguang, HUANGJingjing, ZHANG Wenlong, LIU Fei; Material Leader in February, 2012
(6) Best-Effort request:
Dip-coating method prepares TiO
2the research of film and photocatalysis performance thereof; Nanchang is wished, Quan Wurong, Zhang Jingai, Zhao Chengnan; Solar energy journal Vol.21.No.4
(7) magnetron sputtering:
AFM Analysis on Ti02 Low-E Thin Films Deposited by Magnetron Sputtering;ZHENGZi-yao，WANG Zhu，LI Chun-ling，ZHAO Qing-nan;SEMICoNDUCTORoPTOELECTRoNICS V01.26No.5
(8) colloidal sol-gel:
Sol-gel preparation and photocatalytic activities of TiO
2nanoparticles;QIAN Dong，YANZao-xue，SHI Mao;The Chinese Journal of Nonferrous Metals，NO.1004 0609(2005)05 081706
Compared with prior art, in technical scheme of the present invention, dispersion fiber-NACF photocatalysis unit is evenly arranged at barrel type reactor inner vertical, select dispersion fiber of the prior art simultaneously, to realize Omnibearing even luminescence, its structure is silica core, disperse layer and transparent silicone rubber clad, light source can be provided for whole smell photocatalysis purifier, namely optical fiber light-guiding is adopted, can effectively avoid directly connecting by ultraviolet lamp source the heat that power supply causes, the potential safety hazard that electricity brings, simultaneously can the direct introducing of power supply in avoiding device, and then can aircraft be applicable to a great extent, subway, train, factories etc. close, inflammable and explosive environment.Technical solution of the present invention, while high efficiency filter air particles pollutant, degermingly can be sterilized, and is effectively prevented secondary pollution; By the absorption property (and there is stronger absorbability to various wavelength light) of active carbon (ACF) and TiO
2photocatalysis performance organically combine, effectively can solve the saturated inefficacy of current ACF, secondary pollution and TiO
2the problems such as catalytic rate is slow, mineralising efficiency is low, the economical and effective for VOCs pollutant controls to provide a kind of practicable method, provides efficiency utilization luminous energy, continues the multifunctional air purifying system of efficient stable running.
Accompanying drawing explanation
Fig. 1 is the top view of the photocatalysis air cleaning device structure based on dispersion fiber of the present invention, and wherein 1 is filter element, and 2 is top installing hole, and 3 is gas outlet, and 4 is top end cover.
Fig. 2 is the upward view of the photocatalysis air cleaning device structure based on dispersion fiber of the present invention, and wherein 1 is filter element, and 5 is bottom cover, and 6 is bottom installing hole.
Fig. 3 is the schematic diagram of photocatalysis unit structure of the present invention, and wherein 7 is dispersion fiber, and 8 is NACF.
Fig. 4 is the side view of the photocatalysis air cleaning device structure based on dispersion fiber of the present invention, and wherein 1 is filter element, and 4 is top end cover, and 5 is bottom cover.
Fig. 5 is the internal structure schematic diagram of the photocatalysis air cleaning device based on dispersion fiber of the present invention, and wherein 4 is top end cover, and 5 is bottom cover, and 7 is dispersion fiber.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with specific embodiment.
Based on the structural representation of the photocatalysis air cleaning device of dispersion fiber as shown in accompanying drawing 1-5, wherein 1 is filter element, and 2 is top installing hole, 3 is gas outlet, and 4 is top end cover, and 5 is bottom cover, 6 is bottom installing hole, and 7 is dispersion fiber, and 8 is NACF.
Filter element is tubular filter element HEPA, and its radial cross-section is ring-type, and has certain altitude, and its upper/lower terminal is connected with bottom cover with top end cover respectively.
The central authorities of top end cover are provided with gas outlet, are used for being connected with pump by pipeline, and after the pump as air entraining device is opened, air, along 360 degree of side surrounding air intakes of tubular filter element HEPA, enters in the volume of purifier.
Top end cover and bottom cover are set respectively at the two ends up and down of purifier, are fixedly linked with tubular filter element; On top end cover, the surrounding of gas outlet is evenly provided with top installing hole, bottom cover is evenly provided with bottom installing hole, arrange with concentric circular fashion by top installing hole and bottom installing hole, and make the projection of top installing hole and bottom installing hole in the vertical direction consistent, namely top end cover and bottom cover institute in the plane, be uniformly distributed along 360 degree of circular arcs, with top end cover and bottom cover center for the center of circle, spaced set three encloses top installing hole and bottom installing hole in the radial direction thereof.
Be uniformly distributed in the volume of the purifier of top end cover, bottom cover and tubular filter element composition and be provided with photocatalysis unit, select fibrous catalyst unit, be made up of dispersion fiber and NACF, dispersion fiber is used for being connected with top installing hole, bottom installing hole, vertically be connected with top end cover, bottom cover by fibrous catalyst unit, and parallel with tubular filter element; NACF is wrapped in the skin of dispersion fiber.
The surface of NACF is provided with optically catalytic TiO 2 layer, or load there is titanium dioxide optical catalyst; The inwall of filter element is provided with titanium dioxide photocatalyst layers, or load there is titanium dioxide optical catalyst.
The HEPA used is purchased from Zhongshan Cleantop ACF Co., Ltd., and NACF is purchased from Jiangsu Ke Jing carbon fiber Co., Ltd, and dispersion fiber is purchased from Nanjing Chun Hui Science and Technology Ltd..
In tubular filter element HEPA, cylinder overall diameter 60cm, the thick 5cm of barrel, height 100cm, optical fiber arrangement 60, gas outlet is directly 20cm, according to preparation method in prior art, be 3 times by the number of times of NACF Best-Effort request in colloidal sol-gel complex material, after under an argon atmosphere with 2.5 DEG C/min be warming up to 250 DEG C insulation 1h, again with 5 DEG C/min rise to 450 DEG C insulation 2h, after obtain dispersion optical fiber photocatalysis unit; Select on the inwall of filter element HEPA, directly brush Sol-gel composites, after under an argon atmosphere with 2.5 DEG C/min be warming up to 250 DEG C insulation 1h, then with 5 DEG C/min rise to 450 DEG C insulation 2h, after obtain filter element.
The sol-gel processing of Graphene and composite titania material: by natural flake graphite and sodium nitrate 1:1 in mass ratio, mix in the 100ml concentrated sulfuric acid, keeps solution temperature to be no more than 10 DEG C, reaction 30min; Slowly add a certain amount of potassium permanganate (10 times to graphite), constantly stir, solution temperature rises to 20 DEG C-40 DEG C, reaction 30min; Gradation adds 150ml distilled water, controls solution and does not seethe with excitement, reaction 30min; Add 20ml, the H of 30%
2o
2, after stirring, centrifugation while hot, washs once with (1:10) HCl, with distilled water washing several, to filtrate pH close to neutral, is lyophilized into powder and is graphite oxide.Be respectively 1.5%, 2%, 3%, 4% and 5% by C Theoretical Mass mark, graphite oxide is fully disperseed in absolute ethyl alcohol, ultrasonic stripping 1h, add the sodium borohydride of 3 times of quality, vibration 16-17h, with absolute ethanol washing several, adds 10ml butyl titanate, take glacial acetic acid as end-capping reagent, continuous stirring a couple of days, obtain gel state product, fully dry, be warming up to 250 DEG C of insulation 1h with 2.5 DEG C/min under an argon atmosphere, then rise to 450 DEG C of insulation 2h with 5 DEG C/min.TiO
2-Gn(titanium dioxide-Graphene) composite photo-catalyst.
Air inlet at the uniform velocity passes into O
3content is the gaseous mixture (mist of ozone and air) of 0.150ppm-0.200ppm, and exit velocity controls as 2m/s, and in reactor, disperse light reacts 30min, 60min, 90min, 120min and 300min, O after detection reaction under irradiating
3concentration, calculates O
3degradation rate.From test result, as ultraviolet lighting 30min, O
3degradation rate is 25.26%; And the reaction of propagation time reaches 60min, O
3degradation rate increases fast to 66.12%; And continue to extend catalysis time, the O after degraded
3substantially no longer there is larger decline in concentration, substantially can keep stable.
Above to invention has been exemplary description; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (10)
1. based on the photocatalysis air cleaning device of dispersion fiber, it is characterized in that, comprise filter element and photocatalysis unit, wherein:
Described filter element is tubular filter element, and its radial cross-section is ring-type, and its upper/lower terminal is connected with bottom cover with top end cover respectively;
The central authorities of described top end cover are provided with gas outlet, are connected with pump by pipeline; Surrounding in described gas outlet is evenly provided with top installing hole; Described bottom cover is evenly provided with bottom installing hole;
Described photocatalysis unit selects fibrous catalyst unit, and its one end and the top installing hole be arranged on top end cover are fixedly linked, and the other end and the bottom installing hole be arranged on bottom cover are fixedly linked;
Described fibrous catalyst unit is made up of dispersion fiber and NACF, and described dispersion fiber is used for being connected with top installing hole, bottom installing hole, and described NACF is wrapped in the skin of dispersion fiber;
The surface of described NACF is provided with titanium dioxide photocatalyst layers, or load has titanium dioxide optical catalyst.
2. the photocatalysis air cleaning device based on dispersion fiber according to claim 1, is characterized in that,
Described filter element selects HEPA filter element, can contaminant particle in effectively catching air, and its surface is fold-type cellular structures;
Described top installing hole is arranged on top end cover with concentric circular fashion, namely in top end cover institute in the plane, is uniformly distributed along 360 degree of circular arcs, with top end cover center for the center of circle, and spaced set some circle tops installing hole in the radial direction of top end cover; Described bottom installing hole is arranged on bottom cover with concentric circular fashion, namely in bottom cover institute in the plane, is uniformly distributed along 360 degree of circular arcs, with bottom cover center for the center of circle, and spaced set some circle bottoms installing hole in the radial direction of bottom cover; The projection of described top installing hole and bottom installing hole in the vertical direction is consistent;
Described fibrous catalyst unit is vertically connected with top end cover, bottom cover, and parallel with tubular filter element, is evenly distributed in the space formed by filter element, top end cover and bottom cover.
3. the photocatalysis air cleaning device based on dispersion fiber according to claim 2, is characterized in that, in top end cover institute in the plane, with top end cover center for the center of circle, in the radial direction of top end cover, spaced set 3-6 encloses top installing hole.
4. the photocatalysis air cleaning device based on dispersion fiber according to claim 2, is characterized in that, in bottom cover institute in the plane, with bottom cover center for the center of circle, in the radial direction of bottom cover, spaced set 3-6 encloses bottom installing hole.
5. the photocatalysis air cleaning device based on dispersion fiber according to claim 2, is characterized in that, the material of HEPA filter element selects PP filter paper, glass fibre, the composite filter paper be made up of PP and PET or NACF.
6. the photocatalysis air cleaning device based on dispersion fiber according to claim 2, is characterized in that, in HEPA filter element, cellular structures mesothyrid is chosen as polygon, circle or corrugated.
7. the photocatalysis air cleaning device based on dispersion fiber according to claim 1 and 2, is characterized in that, the inner wall surface of described tubular filter element is provided with titanium dioxide photocatalyst layers, or load has titanium dioxide optical catalyst.
8. the photocatalysis air cleaning device based on dispersion fiber according to claim 1, it is characterized in that, described titanium dioxide optical catalyst selects the titanium dioxide of the flaky nanocrystalline of titanium dioxide, nanotube, nano wire, Graphene and composite titania material or platinum doping vario-property, described titanium dioxide optical catalyst is carried out load by following method, and described method adopts Best-Effort request, magnetron sputtering, colloidal sol-gel.
9. the photocatalysis air cleaning device based on dispersion fiber according to claim 7, it is characterized in that, described titanium dioxide optical catalyst selects the titanium dioxide of the flaky nanocrystalline of titanium dioxide, nanotube, nano wire, Graphene and composite titania material or platinum doping vario-property, described titanium dioxide optical catalyst is carried out load by following method, and described method adopts Best-Effort request, magnetron sputtering, colloidal sol-gel.
10. the application of the photocatalysis air cleaning device based on dispersion fiber closing, in inflammable and explosive environment as described in one of claim 1-9.
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| CN103992073A (en) * | 2014-06-10 | 2014-08-20 | 长白朝鲜族自治县天福硅藻土有限公司 | Diatom mud and preparation method thereof |
| CN111229028A (en) * | 2020-02-28 | 2020-06-05 | 佛山市金净创环保技术有限公司 | Photocatalytic fiber air purifier and use method thereof |
| CN112062208B (en) * | 2020-08-28 | 2021-12-31 | 南昌大学 | Photocatalysis treatment device suitable for high turbidity, high chroma waste water |
| CN114183874A (en) * | 2021-11-16 | 2022-03-15 | 广东美的制冷设备有限公司 | Purification device and air conditioner |
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| CN1702202A (en) * | 2005-06-22 | 2005-11-30 | 中山大学 | Active carbon fiber containing nano titanium dioxide particles and its preparation method and uses |
| CN101121114A (en) * | 2007-07-24 | 2008-02-13 | 西北大学 | Continuous mobile type purifying air and water nano-crystalline photocatalysis reactor |
| CN101279168A (en) * | 2008-04-28 | 2008-10-08 | 苏州纳米技术与纳米仿生研究所 | Titanic oxide nano pipe/high-efficiency glass fiber filter in situ synthesis supporting method |
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| US8709341B2 (en) * | 2007-08-08 | 2014-04-29 | Morphic Envirotech Inc. | System for purifying air through germicidal irradiation and method of manufacture |
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| CN1702202A (en) * | 2005-06-22 | 2005-11-30 | 中山大学 | Active carbon fiber containing nano titanium dioxide particles and its preparation method and uses |
| CN101121114A (en) * | 2007-07-24 | 2008-02-13 | 西北大学 | Continuous mobile type purifying air and water nano-crystalline photocatalysis reactor |
| CN101279168A (en) * | 2008-04-28 | 2008-10-08 | 苏州纳米技术与纳米仿生研究所 | Titanic oxide nano pipe/high-efficiency glass fiber filter in situ synthesis supporting method |
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