CN101121040A - Photocatalysis air purifier - Google Patents
Photocatalysis air purifier Download PDFInfo
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- CN101121040A CN101121040A CNA2007100253560A CN200710025356A CN101121040A CN 101121040 A CN101121040 A CN 101121040A CN A2007100253560 A CNA2007100253560 A CN A2007100253560A CN 200710025356 A CN200710025356 A CN 200710025356A CN 101121040 A CN101121040 A CN 101121040A
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- photocatalyst
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Abstract
The invention discloses an efficient photochemical catalysis air purifier, which consists of a machine box, a filtering device, a fan and a photochemical reacting room. The photochemical reacting room includes a three-dimensional honey comb ceramic halftone which loads a photocatalyst of nano-composite TiO2 and an ultraviolet radiation light which irradiates towards the honey comb ceramic halftone. The photocatalyst is TiO2 adulterated with little iron, lanthanum or cerium hydronium, and the quantity of the added hydronium is 0. 005 percent to 0.5 percent of the total weight. The three-dimensional honeycomb ceramic net of a photocatalyst carrier is a honeycomb ceramic, which is provided with 100 to 600 holes per square inch. The polluted air follows a wind inlet fan to go through the filtering device which consists of a primary filtering net and an active carbon filtering net, and granular articles are removed and volatile organic matters with peculiar smell are absorbed; the gas after primary purifying goes into the photochemical reacting room which is provided with the ultraviolet radiation light, the photocatalyst of nano-composite TiO2 and the three-dimensional honey comb ceramic net, and under an effect of a strong oxidizer which is produced by the reaction of the ultraviolet radiation and the photocatalyst, various organic pollutants in the air can be effectively decomposed.
Description
Technical field
The present invention relates to a kind of air cleaner, especially the high efficiency photocatalysis air purifier.
Technical background
Improvement along with living conditions, the room air pollution problem becomes increasingly conspicuous, mainly being to be the chemical contamination of representative with formaldehyde, benzene series row chemical compound, is the microbial contamination of representative with antibacterial, mycete, virus, and is the physical contamination of representative with dust, suspended particles.Room air pollution can cause numerous disease even cancer to take place, and administers room air pollution and more and more is subject to people's attention.Common technology comprises at present: the spray disinfectant sterilization, but chemical residual is arranged; Activated carbon adsorption, but only effective to removing gas with foreign flavor; Ultraviolet sterilization, but need the certain hour irradiation, eyes are also injured easily; As a kind of emerging improvement technology and equipment, at present with TiO
2Become the focus of research and development for the photocatalysis of representative.
CN2774623 discloses a kind of novel photocatalysis air purifier, is made up of blower fan, uviol lamp, loaded catalyst bed and other attachment feature.Photocatalyst coating is on the circle that is parallel to each other or square spacer plate of one group of band breach or passage, the tubulose uviol lamp is through the baffle assembly center, the breach of adjacent separator or blow vent mutual dislocation, the outer of dividing plate and interior edge are respectively near depurator inwall and ultraviolet lamp sleeve, make the photoreaction interval that has constituted elongation in the depurator cavity, also be added with anion generator and ozone decomposition catalyst in the air stream outlet section.
CN2809481 discloses a kind of efficiency of light energy utilization height, two-chamber type nanometer photocatalytic air purifying device that the catalyst total surface area is big, it utilizes Nano semiconductor photocatalysis principle and characteristic ultraviolet, constitutes two endless tube shape light-catalyzed reaction chambers by Burdick lamp, bassoon carrier and tubule carrier, upper support reticulum and lower support reticulum.The tubule carrier is a glass material, and ultraviolet can pass, and the bassoon carrier is a ceramic material.Ring-type mesh on the upper and lower support reticulum makes dual-reaction chamber become polyphone, have indoor air purification, sterilization and deodorant comprehensive function, be applicable to that area is big, unproductive indoor places such as the demanding room of air quality, hotel, hotel, office, meeting room and ward.
It is improvement to original photocatalysis ultraviolet light fitting that CN2686083 discloses the high efficiency photocatalysis ultraviolet light fitting.On its lampshade, have ventilation unit.This ventilation unit can be placed in the top or the bottom of lampshade.In lampshade, be provided with the photocatalysis coating frame.Cylindrical, truncated cone-shaped or prismatic that the photocatalysis coating frame can be.
CN2529646 discloses a kind of photocatalysis air purifying device, is made up of body, switch controlling device, air circulation device, air filter and photocatalysis apparatus.Be provided with photocatalytic reaction device in the passage that air flows through in air purifier, and photocatalytic reaction device is made up of the light-catalyzed reaction thin film and the ultraviolet source that are attached on the carrier.The light-catalyzed reaction thin film is the titanium deoxid film that utilizes magnetically controlled sputter method to prepare on carrier, and carrier is glass, metal, pottery or silk screen.When air passed through photocatalysis air cleaning device, harmful substances in air such as formaldehyde, benzene etc. were degraded under light-catalysed effect, generate nontoxic material, and airborne antibacterial are removed by ultraviolet light also, and therefore air is purified.This photocatalysis air purifying device can be in the indoor use of family, also can be in the indoor use of large space.
CN2621799 discloses a kind of photocatalysis air purifier ', comprise purifier shell, be provided with photochemical chamber and wind cycling mechanism in the purifier shell, be provided with catalyst and lamp tube light source in this photochemical chamber housing, described lamp tube light source is fixedly connected on the front of described photochemical chamber housing.When changing light source, do not need photochemical chamber is taken out from purifier shell, as long as it is promptly replaceable to open purifier shell.In addition, can regulate light source, improve catalytic effect according to the arrangement of catalyst.At last, the fluorescent tube of this invention is convex, and irradiation evenly.
CN2565456 discloses a kind of efficiency light catalyst air purifying device, this device is by taking from casing both sides air intake, that adopts that two groups of cross flow blowers, tops have a wind-guiding screen goes out versions such as FENGDOU, three layers of photocatalyst filtering net and photocatalyst grizzly bar, has solved the contact surface problem of air velocity problems of liquid flow and air and photocatalyst body well; By adopting suitable photocatalyst material, solved the fixation problem of photocatalyst on supporting body well; By the Burdick lamp that adopts ozone free to produce, solved the ozone problem that exceeds standard well.The solution of these problems has improved air purification effect, has improved the air cleaning quality.
Present photocatalysis technology is used to administer air pollution and also has some defectives, particularly TiO
2The photo-quantum efficiency of photocatalyst and photocatalysis efficiency are all lower, have influenced clean effect.The air capacity of handling is big relatively inadequately, can not satisfy the needs of many occasions.
Summary of the invention
The present invention seeks to: providing a kind of is major technique means, auxilliary filtration and the high efficiency photocatalysis air purifier of activated carbon adsorption with the photocatalysis.Especially adopt " doping " method, adopt preparation loaded with nano level composite Ti O
2The three-dimensional ceramic honey comb net of thin film is to widen TiO
2The photoresponse scope, improve quantum yield, photocatalysis efficiency is improved.Improve TiO simultaneously
2The air cleaning amount of photocatalyst device improves the quality that purifies air.
Technical solution of the present invention is: photocatalysis air purifying device, form by cabinet, defecator, blower fan, photochemical reaction chamber, and it is characterized in that described photochemical reaction chamber comprises: loaded with nano composite Ti O
2The uviol lamp of the three-dimensional ceramic honey comb web plate of photocatalyst and irradiation ceramic honey comb web plate, photocatalyst is TiO
2Doping small amounts of iron, lanthanum or cerium ion, ion addition are 0.005 of gross weight～5 ‰, and the three-dimensional ceramic honey comb net of catalyst carrier is the ceramic honey comb that 100～600 holes are arranged on per square inch.The cordierite-quality honeycombed ceramics that 200～400 hole/square inches are especially arranged.
Defecator can be the primary filter net, also can be provided with one to two group of active carbon filter net behind the primary filter net; On the depurator and be provided with gauge tap and smell sensor, the control circuit that cooperates with pick off and drive circuits such as VFD interface display, remote controller, low concentration formaldehyde or TDC, be used to drive the work of blower fan and uviol lamp.Air is by the primary filter net, and successively secondary adsorbs by active carbon filter net.The primary filter net of installing at the air intake place of depurator, and the activated carbon filter screen with good adsorption and dust collecting effect has been installed respectively at import and export, screen area is 400～1200cm
2, its vapour lock, pressure drop are very little, are applicable to that big air quantity purifies to use.The activated carbon filter screen thickness that is equipped with is 3～30mm, and the filter screen hole has specifications such as pore, mesopore, macropore, to adapt to the different requirements that purify.
Blower fan is used for air circulation, has adopted 2 super low noise blower fans, comprises air inlet blower fan and air outlet blower fan, and the power that is installed on porch air intake machine guarantees that greater than the exhaust blower that is installed on the exit air circulation is unobstructed.
Photochemical reaction cell structure, material and manufacturing process.The nanometer composite Ti O of several uviol lamps and respective amount is installed in the reative cell
2Three-dimensional light catalyzed honeycomb ceramic network makes each mesh of ceramic network fully accept illumination.Reaction chamber wall adopts the high-intensity reflecting material, and guarantees the remainder sealing outside the deacration import and export in the course of processing, keeps the reflecting effect of inwall.
It is 200～280nm that light source sends ultraviolet wavelength, can excite TiO
2Photocatalysis, direct kill bacteria again, and can adopt not ozoniferous uviol lamp, the life-span of lamp is greater than 8000hr.
Depurator mainly comprises cabinet, has the air inlet of primary filter net, can comprise activated carbon adsorption layer, air intake blower fan, photochemical reaction chamber, nanometer composite Ti O
2The three-dimensional ceramic honey comb net of photocatalysis, uviol lamp, air draft blower fan, the grid air outlet that has activated carbon adsorption layer, gauge tap, VFD interface display, remote controller, low concentration formaldehyde smell sensor, circuit board and various components and parts etc., the depurator structural representation is seen accompanying drawing.
The main manufacture methods of this equipment comprises: 1, preparation loaded with nano composite Ti O
2The three-dimensional ceramic honey comb net of photocatalysis; 2, the customization of components and parts and material with choose, comprising: activated charcoal strainer, primary filter net, UV-C Burdick lamp and ballast, import and export blower fan and motor, low concentration formaldehyde smell sensor, remote controller, photochemical reaction chamber interior walls reflectorized material etc.3, complete machine design and processing comprise VFD interface display, air flow control, the linking of process for purifying at different levels, the indoor light source of light-catalyzed reaction and nanometer composite Ti O
2The layout of photocatalysis three-dimensional ceramic net etc.
Characteristics of the present invention are: a kind of loaded with nano level composite Ti O is provided
2The three-dimensional ceramic honey comb net of thin film, its specific surface area is big, light transmission good, mechanical strength is high, photocatalysis efficiency and photo-quantum efficiency height, photocatalytic activity are lasting.Air is effectively removed pollutant and antibacterial by the absorption of photocatalysis and activated charcoal strainer.The VFD interface display is adopted in equipment control, touches button, convenient intelligence, and be equipped with remote controller.The device structure high-air-tightness is effectively avoided ultraviolet light and poisonous gas leakage.Light source can adopt not ozoniferous uviol lamp, to human body safety.
Description of drawings
Fig. 1 is a high efficiency photocatalysis air purifier structural representation
Specific embodiments
In the device feature, preparation nanometer composite Ti O
2The three-dimensional ceramic honey comb net means of photocatalysis is the most key:
At first be composite photo-catalyst TiO
2Presoma one metatitanic acid colloidal sol preparation, be about to raw materials such as butyl titanate (or titanium propanolate), acid (hydrochloric acid, oxalic acid, glacial acetic acid or methacrylic acid etc.), alcohol (ethanol, normal propyl alcohol, isopropyl alcohol or n-butyl alcohol etc.), water with 1: 6～10: 8～20: 2～6: 1～5 mixed in molar ratio; Add proper amount of glycol amine and small amounts of iron or lanthanum or cerium ion (the ion addition is 0 of gross weight～5 ‰) again, obtain composite titanic acid colloidal sol; With wall thickness≤0.2mm, on per square inch the cordierite-quality honeycombed ceramics (having certain thickness rectangular-shaped) in 200～400 holes being arranged is carrier impregnation 2～10min in composite titanic acid colloidal sol, lifts, dries with the 5cm/min linear velocity then; Calcination procedure heats up from room temperature with 5 ℃/min, respectively keeps 30min at 100 ℃, 200 ℃, 300 ℃, 400 ℃, and final temperature rises to 500 ℃, keeps cooling to room temperature with the furnace behind the 60min; To flood to roasting process repetition 2～8 times, obtain nanometer composite Ti O
2The three-dimensional ceramic honey comb net of photocatalysis.Once enter inside and be provided with uviol lamp and nanometer composite Ti O
2The photochemical reaction chamber of the three-dimensional ceramic honey comb net of photocatalysis.Under the strong oxidizer effect of UV-C and light-catalyzed reaction generation, various organic pollutions can resolve into nontoxic water, carbon dioxide and simple inorganic matter effectively, kill contained antibacterial simultaneously, thereby air is efficiently purified.
In the said apparatus, the indoor minimum photocatalysis three-dimensional ceramic web plate that (contains many uviol lamps) more than one and (contain polylith) more than a supported catalyst that adopted of light-catalyzed reaction, the position cross arrangement of lamp and net makes each mesh all can accept illumination.Reative cell except that import department and outlet, the reflectance height of its inwall, junction sealing.The thickness of every block of photocatalysis three-dimensional ceramic web plate is at 5-60mm, especially 10-30mm; It all is standard configurations that two ceramic network plate holder one lamps or n piece web plate folder n-1 prop up lamp.Big as the web plate area, arrangement can be some lamps, the H lamp also can.
In the said apparatus, in the activated charcoal strainer of installing into and out of the place, air port, screen area is 400～1200cm
2, thickness is 3～30mm, hole has specifications such as pore, mesopore, macropore.The vapour lock and the pressure drop of filter screen are all very little, can turn round under basic, normal, high air quantity state.Under adjacent with it blower motor effect, activated charcoal strainer realizes the efficient absorption to VOC.
In the said apparatus, the depurator panel is provided with buttons such as power supply, air quantity, time, automatic warning, and duty can adopt the VFD interface display with manual or remote controller setting; Digital time switch is adopted in clarification time control; High, medium and low three-step timing is adopted in air quantity control; Be provided with (low concentration) formaldehyde odor sensing device and alarm indicator automatically.
In the said apparatus, the parts such as circuit board, ballast, blower motor of various electronics units (device) part are installed reasonably in the body, organism bottom is equipped with roller and is convenient to move.The casing of depurator is except that also there being very high air-tightness into and out of the air port, be beneficial to air circulation, prevent ultraviolet light and poisonous gas leakage.
Embodiment: a kind of high efficiency photocatalysis air purifier
According to the method described above, at first make loaded with nano composite Ti O
2The three-dimensional ceramic honey comb of photocatalyst (net or web plate), the mesh gross area 3.0～5.0m of every networking plate
2, composite Ti O
2The load capacity of photocatalyst film on carrier is 0.21mg/cm
2, TiO
2Particle diameter is preferably 15～20nm, and the thickness of loaded film is 200～400nm.A kind of high efficiency photocatalysis air purifier of processing and manufacturing then, overall dimensions is 550 * 806 * 250mm (containing roller), air quantity is 3.0m
3/ min, air quantity switch to basic, normal, high 3 sections, and purifying regularly is 0.5～99hr, are 90W/10W during power consumption/standby, operating noise≤30dB, and complete machine weight is about 20kg.Is 18～35m with this machine to area
2The air purification effect in room is: purifying formaldehyde efficient 95～100%, benzene (comprising total organic matter) purification efficiency 90～99%, remove total antibacterial rate 95～100%, escherichia coli clearance 95～100%.
Depurator body control panel is provided with buttons such as power supply, air quantity, time, automatic warning; Duty can be used manually or the remote controller setting, and adopts the VFD interface display; Digital time switch is adopted in clarification time control; High, medium and low three-step timing is adopted in air quantity control; Automatically report to the police and adopt low concentration formaldehyde odor sensing device to show.
Component layouts such as various electronics units (device) the part circuit board of installing in the cabinet, ballast, blower motor are reasonable, and organism bottom is equipped with roller.The casing of depurator is except that also there being very high air-tightness into and out of the air port, be beneficial to air circulation, prevent ultraviolet light and poisonous gas leakage.
A plurality of uviol lamps and multilamellar (1-10 layer) nanometer composite Ti O are installed in the reative cell
2Three-dimensional light catalyzed honeycomb ceramic network, the ceramic honey comb hole is distinguished and admirable to parallel with blower fan; Every thickness of pottery web plate is 1-3cm, and each mesh is fully accepted illumination.Reaction chamber wall adopts the high-intensity reflecting material by plated film or sputtered aluminum, silver, zinc etc., and guarantees the remainder sealing the deacration import and export outside, the reflecting effect of maintenance inwall in the course of processing.
It is 200～280nm that light source preferably sends ultraviolet wavelength, can excite TiO
2Photocatalysis, direct kill bacteria again, and do not produce ozone, the life-span of lamp is greater than 8000hr.Also can adopt the fluorescent lamp that can send near-ultraviolet spectrums such as 200～480nm, the nanometer composite Ti O after the doping
2The luminous efficiency of the three-dimensional ceramic honey comb net of photocatalysis also can improve a lot.
Claims (10)
1. photocatalysis air purifying device is made up of cabinet, defecator, blower fan, photochemical reaction chamber, it is characterized in that described photochemical reaction chamber comprises: loaded with nano composite Ti O
2The uviol lamp of the three-dimensional ceramic honey comb web plate of photocatalyst and irradiation ceramic honey comb web plate, photocatalyst is TiO
2Doping small amounts of iron, lanthanum or cerium ion, ion addition are 0.005 of gross weight～5 ‰, and the three-dimensional ceramic honey comb net of catalyst carrier is the ceramic honey comb that 100～600 holes are arranged on per square inch.
2. photocatalysis air purifying device according to claim 1 is characterized in that defecator primary filter net, or is provided with one to two group of active carbon filter net behind the primary filter net.
3. photocatalysis air purifying device according to claim 2, it is characterized in that primary filter net in the installation of the air intake place of depurator, and the activated carbon filter screen with good adsorption and dust collecting effect has been installed respectively at import and export, screen area is 400～1200cm
2, the activated carbon filter screen thickness of outfit is 3～30mm.
4. photocatalysis air purifying device according to claim 1 is characterized in that blower fan has adopted 2 super low noise blower fans, comprises air inlet blower fan and air outlet blower fan, and the power that is installed on porch air intake machine is greater than the exhaust blower that is installed on the exit.
5. photocatalysis air purifying device according to claim 1 is characterized in that the indoor installation of photochemical reaction is minimum more than one and the photocatalysis three-dimensional ceramic web plate of an above supported catalyst, the position cross arrangement of lamp and net.
6. photocatalysis air purifying device according to claim 5 is characterized in that two ceramic network plate holder one lamps or n piece web plate folder n-1 props up lamp.
7. photocatalysis air purifying device according to claim 5 is characterized in that the photochemical reaction chamber except that import department and outlet, and its inwall is the high inwall of reflectance.
8. photocatalysis air purifying device according to claim 5, the thickness that it is characterized in that photochemical reaction chamber every photocatalysis three-dimensional ceramic web plate is at 5-60mm.
9. photocatalysis air purifying device according to claim 1 is characterized in that nanometer composite Ti O in the reative cell
2The ceramic honey comb hole of three-dimensional light catalyzed honeycomb ceramic network is distinguished and admirable to parallel with blower fan.
10. photocatalysis air purifying device according to claim 1 is characterized in that being provided with the formaldehyde odor sensing device.
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|---|---|---|---|
| CNA2007100253560A CN101121040A (en) | 2007-07-25 | 2007-07-25 | Photocatalysis air purifier |
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| CNA2007100253560A CN101121040A (en) | 2007-07-25 | 2007-07-25 | Photocatalysis air purifier |
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|---|---|---|---|---|
| CN101549168B (en) * | 2009-05-14 | 2012-09-05 | 辽宁九通电力电子有限公司 | Multifunctional air purifier with health-protection effect |
| CN103982948A (en) * | 2014-05-12 | 2014-08-13 | 浙江共展环保科技有限公司 | Combined type indoor air purifying device and combined type indoor air purifying method thereof |
| CN104436886A (en) * | 2014-11-04 | 2015-03-25 | 太仓市大友空调设备有限公司 | Novel efficient indoor air purification device |
| CN105240952A (en) * | 2015-11-03 | 2016-01-13 | 阮少康 | Air purifier |
| CN105333525A (en) * | 2015-11-24 | 2016-02-17 | 阮少康 | Air purifier |
| CN105698300A (en) * | 2016-04-01 | 2016-06-22 | 深圳市绿色半导体照明有限公司 | Tubular photocatalyst purifier |
| WO2016115790A1 (en) * | 2015-01-19 | 2016-07-28 | 中国科学院过程工程研究所 | Ozone-photocatalysis reactor and water treatment method |
| CN106152252A (en) * | 2015-03-17 | 2016-11-23 | 上海敬林环保科技有限公司 | A kind of clarifier of UVCLED pipeline light chemotherapy air |
| CN106466553A (en) * | 2016-10-28 | 2017-03-01 | 宜都艾克利尔科技有限公司 | A kind of removing low concentration formaldehyde, the air cleaner of benzene homologues |
| CN106678995A (en) * | 2017-01-22 | 2017-05-17 | 上海市全保环境科技有限公司 | Air purifying device designed based on air duct and manufacturing method |
| CN106955684A (en) * | 2017-04-05 | 2017-07-18 | 许允方 | A kind of preparation method of photocatalysis ceramic monolith |
| CN107369369A (en) * | 2017-08-16 | 2017-11-21 | 北京科技大学 | A kind of device administered for the VOC photochemical catalytic oxidations of commerical test and teaching |
| CN108043218A (en) * | 2017-12-12 | 2018-05-18 | 常州大学 | A kind of oxidation of formaldehyde absorber |
| CN108050601A (en) * | 2017-11-24 | 2018-05-18 | 苏州赛易特环保科技有限公司 | A kind of nano photocatalysed air purifier |
| CN108139095A (en) * | 2015-09-30 | 2018-06-08 | 皇家飞利浦有限公司 | Gas filter system and method |
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| CN109603534A (en) * | 2019-01-14 | 2019-04-12 | 南昌市医疗废物处置中心有限公司 | A kind of air sterilization device based on photocatalysis technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101549168B (en) * | 2009-05-14 | 2012-09-05 | 辽宁九通电力电子有限公司 | Multifunctional air purifier with health-protection effect |
| CN103982948A (en) * | 2014-05-12 | 2014-08-13 | 浙江共展环保科技有限公司 | Combined type indoor air purifying device and combined type indoor air purifying method thereof |
| CN104436886A (en) * | 2014-11-04 | 2015-03-25 | 太仓市大友空调设备有限公司 | Novel efficient indoor air purification device |
| WO2016115790A1 (en) * | 2015-01-19 | 2016-07-28 | 中国科学院过程工程研究所 | Ozone-photocatalysis reactor and water treatment method |
| US10662095B2 (en) | 2015-01-19 | 2020-05-26 | Institute Of Process Engineering, Chinese Academy Of Sciences | Ozone-photocatalysis reactor and water treatment method |
| CN106152252A (en) * | 2015-03-17 | 2016-11-23 | 上海敬林环保科技有限公司 | A kind of clarifier of UVCLED pipeline light chemotherapy air |
| CN108139095A (en) * | 2015-09-30 | 2018-06-08 | 皇家飞利浦有限公司 | Gas filter system and method |
| CN105240952A (en) * | 2015-11-03 | 2016-01-13 | 阮少康 | Air purifier |
| CN105333525A (en) * | 2015-11-24 | 2016-02-17 | 阮少康 | Air purifier |
| CN105698300A (en) * | 2016-04-01 | 2016-06-22 | 深圳市绿色半导体照明有限公司 | Tubular photocatalyst purifier |
| CN106466553A (en) * | 2016-10-28 | 2017-03-01 | 宜都艾克利尔科技有限公司 | A kind of removing low concentration formaldehyde, the air cleaner of benzene homologues |
| CN106678995A (en) * | 2017-01-22 | 2017-05-17 | 上海市全保环境科技有限公司 | Air purifying device designed based on air duct and manufacturing method |
| CN106955684A (en) * | 2017-04-05 | 2017-07-18 | 许允方 | A kind of preparation method of photocatalysis ceramic monolith |
| CN110944749B (en) * | 2017-05-10 | 2023-11-24 | 卡罗比亚咨询有限责任公司 | Nanometer functional bracket and production method thereof |
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| CN112218528A (en) * | 2018-03-16 | 2021-01-12 | 诺埃尔·埃尔曼 | Device and method for controlled release of substances |
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| CN109603534A (en) * | 2019-01-14 | 2019-04-12 | 南昌市医疗废物处置中心有限公司 | A kind of air sterilization device based on photocatalysis technology |
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| CN112058047A (en) * | 2020-08-12 | 2020-12-11 | 太仓北新建材有限公司 | Gypsum board SOx/NOx control device and chain automatic control system thereof |
| CN114688667A (en) * | 2020-12-29 | 2022-07-01 | 广东美的环境电器制造有限公司 | Purifying device |
| CN113198317A (en) * | 2021-04-22 | 2021-08-03 | 上海玉朗科技有限公司 | Wire and cable fire behaviour test waste gas treatment system |
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