CN101703793A - Large flux nanocrystalline photocatalysis air purifying device - Google Patents
Large flux nanocrystalline photocatalysis air purifying device Download PDFInfo
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- CN101703793A CN101703793A CN200910219200A CN200910219200A CN101703793A CN 101703793 A CN101703793 A CN 101703793A CN 200910219200 A CN200910219200 A CN 200910219200A CN 200910219200 A CN200910219200 A CN 200910219200A CN 101703793 A CN101703793 A CN 101703793A
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- air purifying
- tio
- photocatalysis air
- porous silica
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Abstract
The invention discloses a large flux nanocrystalline photocatalysis air purifying device. The key point of the technology is as follows: an optical reactor unit body jointed structure is designed as a linear type, a folded type or a spiral type; a catalyst stationary phase is porous quartz glass loaded with a nano TiO2 photocatalyst, the luminousness of the porous quartz glass is greater than 90 percent within the wavelength range of 200-800nm, the density is 0.5-0.9g/cm3, and the porosity is 65-75 percent. The unit volume of the invention has strong space processing capability and large flux, overcomes the defects of bad space processing performance of the unit volume, small contact area of the photocatalyst and a reactant, high loss ratio of a carrier to optical source energy and the like in the traditional structure design. The invention is mainly used for killing various bacteria in the air and purifying organic volatile matters such as formaldehyde and the like in the air.
Description
Technical field
The present invention relates to a kind of photocatalysis air purifying device, particularly a kind of big flux linear type, folded type or screw type nanocrystalline photocatalysis air purifying device belong to the nano-crystalline photocatalysis technical field.
Background technology
In the last few years, the excessive use along with interior architecture ornament materials, domestic chemical substance caused a large amount of VOCs, comprised that formaldehyde, benzene series thing, chloride, ketone, hydro carbons etc. all are detrimental to health to some extent; Floating various pathogenic bacterias, microorganism of the people space of depending on for existence simultaneously causes the people sick through breathing directly to enter in the body, comprise the respiratory system disease that once causes human panic SARS, bird flu and influenza A H1N1.When people showed great attention to environment and health, an urgent demand improved environmental quality, and the room and the environment of an activation that purify in the life and work seem very important.The Nano semiconductor photocatalysis air purifying device is the research focus, it can built-inly be exclusively used in the air sterilization in Biohazard Safety Equipment, aseptic superclean bench, aseptic processing room, sterile production workshop etc., also can be widely used in the air cleaning in places such as gymnasium, museum, hotel, hospital, family.
Photo catalysis reactor is that light-catalyzed reaction takes place and final the degraded removed the device of nuisance, reactant is contacted with the catalyst large tracts of land, and will conveniently use.In the mobile phase photo catalysis reactor, existing way according to catalyst, roughly can be divided into rotating plasma precursor reactant device, fluidized-bed reactor and fixed bed reactors three classes, wherein the fixed bed reactors kind is more, and it is different with structure mainly to be the catalyst carrier material: as use light transmission on the material relatively poor metal gauze class, difform ceramic-like etc. are arranged; That uses the better material of light transmission has optical fiber (Chinese patent ZL01113708.8), glass plate, capillary glass tube (Chinese patent ZL200610029643.4), glass fiber, quartz sand (Chinese patent ZL200410068952.3), a macromolecular material etc.; And for example carrier structure is different traditional sheet frame shape (Chinese patent ZL 02144673.3), graininess, cellular, tabular, tubulose (Chinese patent ZL 01265866.9) and cellular structures such as (Chinese patent ZL200710018322.9).Above mentioned various Photoreactor all has characteristics and purpose of design separately, but all exists shortcomings such as the spatial manipulation ability of unit volume,, catalyst not high to the energy of light source utilization rate and reactant contact area be little.
Summary of the invention
The spatial manipulation ability that the object of the invention provides a kind of unit volume is strong, and large flux nanocrystalline photocatalysis air purifying device is to overcome the main deficiency of prior art.
The present invention adopts following technical scheme to realize the foregoing invention purpose:
A kind of large flux nanocrystalline photocatalysis air purifying device, its Photoreactor unit comprises ultraviolet lamp tube (1), glass bushing (2), catalyst immobile phase (3) and Photoreactor unit cylindrical shell (4), and principal character is: a plurality of Photoreactors unit sidepiece is interconnected and forms linear type, folded form or screw type conjoined structure.
Described catalyst immobile phase (3) is porous silica glass loaded with nano TiO
2Photocatalyst, the light transmittance of porous silica glass in 200～800nm wave-length coverage are greater than 90%, and density is 0.5～0.9g/cm
3, voidage is 65～75%.
Described nano-TiO
2Photocatalyst is the nano-TiO of metal ion mixing (with the metal-oxide form)
2Photocatalyst, metal ion mixing amount are TiO
21～2% (weight ratio) of amount, metal ion is selected from Cu
2+, Ag
+, Fe
3+, Co
2+, Ni
2+, Tb
3+, Eu
3+, its salt such as Cu (Ac)
2, AgNO
3, FeCl
3, CoCl
2, Ni (NO
3)
2, Tb (NO
3)
3, Eu (NO
3)
3Deng.
Described glass bushing (2) is a quartz glass sleeve, and porous silica glass loaded optic catalyst immobile phase (3) is evenly installed to be laid in around the quartz glass sleeve, has guaranteed the evenly transmission effectively of ultraviolet light.
Photoreactor unit cylindrical shell (4) bottom is provided with the metal holder net (6) that ultraviolet lamp tube (1) is held up.Its purpose of design is can also guarantee air when holding ultraviolet lamp tube (1) for metal holder net (6) along the thermolysis of having flowed of uviol lamp tube wall, uses to guarantee the ultraviolet lamp tube long-term work.
Conjoined structures such as linear type, folded form and screw type have greatly reduced the volume of air purifier, have greatly improved the spatial manipulation ability of this air purifier unit volume.Simultaneously such series connection conjoined structure design is to flow according to placed in-line piston (being that fluid side is advanced the Photoreactor cell cube that side goes out) stream in order to ensure fluid to transmit, and is beneficial to reach ideal piston flow or claims laminar flow.
A kind of manufacture method of large flux nanocrystalline photocatalysis air purifying device, porous silica glass is wherein taked following processing method: quartz glass is become half garden ring cylinder shape porous silica glass through high temperature process, treat to handle 5 minutes with 3～5% hydrofluoric acid solution after its cooling, with deionized water or distilled water wash to pH=7, at last with absolute ethanol washing, dehydration and dry.
The porous silica glass that above-mentioned processing is obtained impregnated in the butyl titanate alcoholic solution coating 10 minutes, took out natural drying, and in 450 ℃～500 ℃ calcinings down, natural cooling promptly obtains the load of carrier inner surface nano-TiO again
2The photocatalyst of thin film, or be called the photocatalyst immobile phase, the nano-TiO of the carrier surface that obtains
2Size is 20-30nm.
Compared with prior art, the present invention has following outstanding advantage:
1, the photocatalysis air purifying device among the present invention is the design of unit (being fluid piston) sidepiece series connection conjoined structure with the Photoreactor cell cube, is beneficial to reach ideal piston flow (or claiming laminar flow) and the transmission of flowing.
2, the photocatalysis air purifying device among the present invention is designed to the overall volume that conjoined structures such as linear type, folded form and screw type have compressed air purifier widely with the Photoreactor for the cell cube disjunctor, has greatly improved the spatial manipulation ability of its unit volume.
3, the photocatalysis air purifying device among the present invention is with porous silica glass (loaded with nano TiO
2Adulterate body) place that takes place as photoreaction, new material new construction design, having high printing opacity (200～800nm wavelength) rate, large contact surface, long-pending (density is 0.5～0.9g/cm
3, voidage is 65～75%, catalyst nano TiO
2Specific surface area 108m
2/ g); Compare with traditional air purifier, bigger illuminating area and response area is provided, obtained higher photocatalysis efficiency, the photocatalyst load is firm, long-acting, not efflorescence, do not run off.
4, the air purifier among the present invention can be killed buoyant various pathogenic bacterias in the air in photochemical catalytic oxidation; Degradation capability is strong, speed is fast to airborne organic volatile (particularly formaldehyde), and other Organic substances of purification of can degrading simultaneously; To organic volatile non-selectivity almost, oxidation operation, decomposition finally can be degraded to CO
2And H
2O.
5, the photocatalysis air purifying device among the present invention can not cause secondary pollution to environment.
6, the photocatalysis air purifying device among the present invention can be according to different demands, be designed to linear type, folded form and screw type etc., Photoreactor cell cube disjunctor quantity wherein can design adjustment according to demand simultaneously, and applying flexible is convenient, and volume is little, flux is big, energy consumption is low.
Description of drawings
Fig. 1 is Photoreactor cell cube structural representation in the large flux nanocrystalline photocatalysis air purifying device of the present invention;
Fig. 2 is Photoreactor cell cube A-A planing surface figure;
Fig. 3 is a Photoreactor cell cube metal holder anastomose composition;
Fig. 4 is a linear type disjunctor air purifier planing surface structure chart of the present invention;
Fig. 5 digs diagrammatic sketch for folded form disjunctor air purifier structure of the present invention;
Fig. 6 digs diagrammatic sketch for screw type disjunctor air purifier structure of the present invention;
Fig. 7 is embodiment of the invention disjunctor air purifier internal structure and air flow schematic diagram;
Fig. 8 is the TiO on the carrier in the photocatalysis air purifying device of the present invention
2The TEM figure and the electron diffraction pattern of crystallite film.
Description of reference numerals:
1-ultraviolet lamp tube 4-Photoreactor unit cylindrical shell
2-glass bushing 5-air purifier housing
3-catalyst immobile phase 6-metal holder net
The specific embodiment
Embodiment 1: the assembly of photocatalysis air purifying device
1, the processing of porous silica glass carrier
Quartz glass is processed into the semicircular ring bar shape porous silica glass of appropriate size through technological process for blowing methods such as drop-down thin, the bending of high temperature, kneadings; Treat that its cooling back handled 5 minutes with 3～5% hydrofluoric acid solution, reuse deionized water or distilled water wash be to pH=7, uses absolute ethanol washing, dehydration at last, standby after dry;
2, carrier loaded photocatalyst
Compound concentration is 20% butyl titanate alcoholic solution, adds a certain amount of slaine (Cu (Ac)
2, AgNO
3, FeCl
3, CoCl
2, Ni (NO
3)
2, Tb (NO
3)
3, Eu (NO
3)
3), the metal ion mixing weight ratio is TiO
21～2% of amount, stirring 2h is stablized, uniform transparency liquid; With carrier dip coating 10 minutes under normal temperature condition, take out back natural drying in air then,, can obtain the carrier inner surface and adhere to nano-TiO is arranged again in 500 ℃ of calcinings 10 minutes and in stove, naturally cool to room temperature down
2The photocatalyst of adulterate body thin film, nano-TiO
2Size is 20-30nm (shown in the accompanying drawing 8), TiO
2Specific surface area is 108m
2/ g uses in order to the assembling air purifier;
3, air purifier is installed
Carry out each parts assembling by shown in accompanying drawing 1～6 design, the combination loading load has the porous silica glass catalyst immobile phase (3) of catalyst step by step in assembling concentric quartz glass sleeve (2), the live body top cover on top is installed again, seal slit between quartz glass sleeve (2) and the Photoreactor unit cylindrical shell (4) and the slit between live body top cover and the air purifier housing one by one with the pliability glass cement at last, the assembling of air purifier manufacturing is so far finished.Ultraviolet lamp tube (1) can be put into or be changed when air purifier uses at any time, and is convenient, flexible.
Embodiment 2: the manufacturing and the air sterilization thereof of linear type disjunctor air purifier
According to accompanying drawing 4 and shown in Figure 7, the assembly of linear type disjunctor air purifier is identical with embodiment 1, its integral body is slim cuboid, size is: long 1040mm, wide 860mm, thickness 86mm, the power of ultraviolet lamp tube is that the centre wavelength of 39W and luminescent spectrum is 258.7nm, the optical path R=30mm of porous silica glass carrier, height 30～50mm.
The porous silica glass loaded with nano TiO that blowing obtains
2Photocatalyst, the light transmittance of porous silica glass in 200～800nm wave-length coverage are greater than 90%, and density is 0.70g/cm
3, voidage is 72%.Nano-TiO
2Metal ion mixing amount in the photocatalyst is TiO
21.2% (weight ratio), wherein Ag of total amount
+(its salt is selected from AgNO
3) be 0.8%, Cu
2+(its salt is selected from Cu (Ac)
2) be 0.4%.Calcining heat and time be 500 ℃ following 10 minutes.
As shown in Figure 7, air purifier inside is formed by eight Photoreactor cell cube disjunctor Design and Machining, and air intlet to bottom is provided with filling zona spongiosa (being used for filtered air, replacing capable of washing), and air pump (or blower fan), effusion meter and electrical control etc.Use this photocatalysis air purifying device and buoyant various antibacterials in the air are carried out continuous-flow go out and remove, when air mass flow is 0.5m
3/ h, the sterilization rate when total bacterial concentration (total plate count) is 820CFU/L is 100%.
This air purifier build is thin, so it can built-inly be exclusively used in the air sterilization in Biohazard Safety Equipment, aseptic superclean bench, aseptic processing room, sterile production workshop etc.
Embodiment 3: the manufacturing and the degradation of formaldehyde thereof of folded form (or screw type) disjunctor air purifier
Shown in accompanying drawing 5 (or Fig. 6), the assembly of folded form (or screw type) disjunctor air purifier is identical with embodiment 1, its integral body is cuboid, size is: high 1040mm, wide 600mm, thickness 500mm, the power of ultraviolet lamp tube is that the centre wavelength of 39W and luminescent spectrum is 258.7nm, the optical path R=30mm of porous silica glass carrier, height 30～50mm.
The porous silica glass loaded with nano TiO that blowing obtains
2Photocatalyst, the light transmittance of porous silica glass in 200～800nm wave-length coverage are greater than 90%, and density is 0.85g/cm
3, voidage is 68%.Nano-TiO
2Metal ion mixing amount in the photocatalyst is TiO
21.5% (weight ratio), wherein Ag of total amount
+(its salt is selected from AgNO
3) be 0.5%, Cu
2+(its salt is selected from Cu (Ac)
2) be 0.5%, Fe
3+(its salt is selected from FeCl
3) be 0.3%, Eu
3+(its salt is selected from Eu (NO
3)
3) be 0.2%.Calcining heat and time be 500 ℃ following 10 minutes.
As shown in Figure 5, air purifier inside is formed by 23 Photoreactor cell cube disjunctor Design and Machining, and air intlet is provided with filling zona spongiosa (being used for filtered air, replacing capable of washing) to empty body unit, and blower fan, effusion meter and electrical control etc.Use this photocatalysis air purifying device airborne formaldehyde is carried out photocatalytic degradation, when gas flow is 10m
3/ h, concentration of formaldehyde are 0.54mg/m
3The time, degradation rate is 94.4%, degraded back air purifier exit concentration reaches 0.03mg/m
3, far below the IAQ (indoor air quality) standard 0.08mg/m of The World Health Organization (WHO)
3Minimum limit value.
This air purifier volume is little, flux is big, can be widely used in the air cleaning of public places such as gymnasium, museum, hotel, market, also can be used for the air cleaning of home environment.
Claims (6)
1. large flux nanocrystalline photocatalysis air purifying device, its Photoreactor unit comprises ultraviolet lamp tube (1), glass bushing (2), catalyst immobile phase (3) and Photoreactor unit cylindrical shell (4), it is characterized in that: a plurality of Photoreactors unit sidepiece is interconnected and constitutes linear type, folded form or screw type conjoined structure.
2. large flux nanocrystalline photocatalysis air purifying device according to claim 1 is characterized in that: Photoreactor unit cylindrical shell (4) bottom is provided with the metal holder net (6) that ultraviolet lamp tube (1) is held up.
3. large flux nanocrystalline photocatalysis air purifying device according to claim 1 is characterized in that: catalyst immobile phase (3) has nano-TiO for load
2The porous silica glass of photocatalyst, the light transmittance of porous silica glass in 200～800nm wave-length coverage are greater than 90%, and density is 0.5～0.9g/cm
3, voidage is 65～75%.
4. photocatalysis air purifying device according to claim 3 is characterized in that: nano-TiO
2Photocatalyst is the nano-TiO of metal ion mixing
2Photocatalyst, the metal ion mixing amount is TiO by mass percentage
21～2% of amount, metal ion is selected from Cu
2+, Ag
+, Fe
3+, Co
2+, Ni
2+, Tb
3+, Eu
3+
5. the manufacture method of the described photocatalysis air purifying device of claim 1, the processing method that it is characterized in that porous silica glass is as follows: quartz glass is become semicircular ring bar shape porous silica glass through high temperature process, treat to handle with 3～5% hydrofluoric acid solution after its cooling, and be neutral with deionized water wash to pH value, use washing with alcohol, drying at last.
6. the manufacture method of the described photocatalysis air purifying device of claim 5, it is characterized in that: the porous silica glass that obtains be impregnated in the butyl titanate alcoholic solution apply, take out natural drying, in 450 ℃～500 ℃ calcinings down, natural cooling promptly obtains the load of carrier inner surface nano-TiO again
2The catalyst immobile phase of thin film.
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| CN200910219200A CN101703793A (en) | 2009-11-27 | 2009-11-27 | Large flux nanocrystalline photocatalysis air purifying device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350191A (en) * | 2011-07-14 | 2012-02-15 | 上海电力学院 | Method for combined removal of SO2/NOx/Hg in flue gas by using photocatalysis and apparatus used therein |
| CN103167908A (en) * | 2010-09-15 | 2013-06-19 | 国际先端技术总合研究所株式会社 | Glass with photocatalytic function |
| CN103446879A (en) * | 2013-09-05 | 2013-12-18 | 天津大学 | Sleeve type photocatalysis air cleaning device based on dispersion optical fibers |
| CN106186463A (en) * | 2016-08-20 | 2016-12-07 | 苏州恒源净化工程有限公司 | Industrial water conditioning system and anti-cleaning method |
| CN107670656A (en) * | 2017-09-25 | 2018-02-09 | 莱恩创科（北京）科技有限公司 | A kind of photocatalyst method |
| CN107694262A (en) * | 2017-11-01 | 2018-02-16 | 安徽鼎隆重工科技有限公司 | A kind of hot chamber machine smoke eliminator |
| WO2020058421A1 (en) * | 2018-09-20 | 2020-03-26 | Zf Friedrichshafen Ag | Device and method for the photocatalytic decomposition of volatile organic compounds (vocs) and/or nitrous oxides in motor vehicles |
| CN111013384A (en) * | 2019-12-25 | 2020-04-17 | 夫恩特电器(上海)有限公司 | Dual-band photocatalytic purification ultraviolet lamp tube and air purification device |
-
2009
- 2009-11-27 CN CN200910219200A patent/CN101703793A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103167908A (en) * | 2010-09-15 | 2013-06-19 | 国际先端技术总合研究所株式会社 | Glass with photocatalytic function |
| CN102350191A (en) * | 2011-07-14 | 2012-02-15 | 上海电力学院 | Method for combined removal of SO2/NOx/Hg in flue gas by using photocatalysis and apparatus used therein |
| CN103446879A (en) * | 2013-09-05 | 2013-12-18 | 天津大学 | Sleeve type photocatalysis air cleaning device based on dispersion optical fibers |
| CN103446879B (en) * | 2013-09-05 | 2015-08-05 | 天津大学 | Based on the socket type photocatalysis air cleaning device of dispersion fiber |
| CN106186463A (en) * | 2016-08-20 | 2016-12-07 | 苏州恒源净化工程有限公司 | Industrial water conditioning system and anti-cleaning method |
| CN107670656A (en) * | 2017-09-25 | 2018-02-09 | 莱恩创科（北京）科技有限公司 | A kind of photocatalyst method |
| CN107670656B (en) * | 2017-09-25 | 2020-08-11 | 莱恩创科（北京）科技有限公司 | Photocatalyst loading method |
| CN107694262A (en) * | 2017-11-01 | 2018-02-16 | 安徽鼎隆重工科技有限公司 | A kind of hot chamber machine smoke eliminator |
| WO2020058421A1 (en) * | 2018-09-20 | 2020-03-26 | Zf Friedrichshafen Ag | Device and method for the photocatalytic decomposition of volatile organic compounds (vocs) and/or nitrous oxides in motor vehicles |
| CN111013384A (en) * | 2019-12-25 | 2020-04-17 | 夫恩特电器(上海)有限公司 | Dual-band photocatalytic purification ultraviolet lamp tube and air purification device |
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Application publication date: 20100512 |