CN101125215A - Photocatalysis plasma harmful gas purifying device - Google Patents
Photocatalysis plasma harmful gas purifying device Download PDFInfo
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- CN101125215A CN101125215A CNA2007101206497A CN200710120649A CN101125215A CN 101125215 A CN101125215 A CN 101125215A CN A2007101206497 A CNA2007101206497 A CN A2007101206497A CN 200710120649 A CN200710120649 A CN 200710120649A CN 101125215 A CN101125215 A CN 101125215A
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- harmful gas
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Abstract
A noxious gas purifying apparatus applies plasma combined with photocatalysis is designed uniquely with an axial-flow centrifugal fan which has a snail-typed air course; the air is induced in the apparatus by three ways; and then the air orderly goes through the primary filter, low temperature plasma layer, ultraviolet lamp tube, nano- photocatalysis layer, electronic dust-gathering filter; whereafter, the air goes through the high-efficient HAPE filter and adsorbing layer, and the hangover which is left after the process of photocatalysis and plasma is gathered and adsorbed; and the oxygen anion generator supplies a plurality of oxygen anion to the air, and the outcome of the air is purified and fresh. The purifying apparatus has the advantages that: the purifying apparatus can reduce the middle-thickness formaldehyde, ammonia, chlorylene and other pollutants to a lower level in a short period without oxidant or deoxidizer as the commom chemical process art; there is no adsorption saturation, and the final outcomes in the mineralization are carbon dioxide and water; and the whole art has simple operation and environmental protection, greater practicality and popularization value.
Description
Technical field
The present invention relates to a kind of photocatalysis plasma harmful gas purifying device, be mainly used in and remove bulky grain dust, pollen and smog; Be purified inorganic, organic harmful gas in the contaminated air, bacterial virus, stink etc.; Kill common pathogens such as escherichia coli, staphylococcus aureus, virus; The degraded indoor harmful gas is as formaldehyde, benzene, H
2S, NO
2, SO
2Deng; The CO that produces in the efficient adsorption filtration plasma for purification process
2, O
3Make adsorption treatment Deng by-product, prevent its injury human body; And can produce anion, make cleaned air passes more pure and fresh.
Background technology
The purification function of existing harmful gas purifying device is incomplete, can not effectively kill above-mentioned various indoor harmful gas.Particularly photocatalysis apparatus is not formed effective cleaning system with light source, and photocatalysis is limited, and the time of keeping is of short duration, and it is equal effectively to kill common pathogen, and clean-up effect is not good.
Summary of the invention
Purpose of the present invention just provides a kind of photocatalysis plasma harmful gas purifying device, and the purification function that exists with the solution prior art is incomplete, can not effectively kill above-mentioned various indoor harmful gas; Particularly photocatalysis apparatus is not formed effective cleaning system with light source, and photocatalysis is limited, and the time of keeping is of short duration, and it is equal effectively to kill common pathogen, the problem that clean-up effect is not good.
Technical scheme of the present invention is: the unique design that adopts Limax air channel, axial flow centrifugal fan, by the four sides air intake, filter by coarse filtration, low-temperature plasma layer, quartz burner, nano-photo catalytic, electronic dust-collecting, after efficient HAPE Filtration Adsorption layer is collected the residue of photocatalysis, plasma treatment, and supply with a large amount of negative oxygen ions by negative oxygen ion generator, export pure, pure and fresh air afterwards.The nano-photo catalytic device is a composite photocatalyst with the NACF felt-like material of titanium dichloride load, uviol lamp with 8W is an excitation source, by rational structure optimization, makes the preferable principle prototype of catalytic performance and operability, show by performance evaluating, at 30m
3In the appraisement system of enclosed space, the degradation efficiency of target contaminants such as the interior formaldehyde to the finite concentration scope of 60min, ammonia, trichloroethylene reaches or is better than the examination target of defined in the contract fully all above 50%.
Advantage of the present invention is: can be in than the short period typical pollutants such as the formaldehyde of intermediate concentration, ammonia, trichloroethylene be removed to reduced levels, be different from general chemical treatment technology and need consume third party's oxidation or Reducing agent, there is not the absorption saturation problem, whole mineralization process is an end product with carbon dioxide and water, simple, the environmental protection of a whole set of technological operation, the practical and popularizing value that tool is higher.
Description of drawings
Fig. 1 is the population structure sketch map in front of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of photocatalysis apparatus of the present invention;
Fig. 4 is the A-A cutaway view (structural representation of the support epoxy plate of ultraviolet lamp tube of Fig. 4;
Automaton block diagram of the present invention during Fig. 5;
Fig. 6 is a clean-up effect curve of handling ammonia with the present invention;
Fig. 7 is a clean-up effect curve of handling trichloroethylene with the present invention;
Fig. 8 is a clean-up effect curve of handling formaldehyde with the present invention.
The specific embodiment
Referring to Fig. 1～Fig. 5, be respectively equipped with air inlet 12 and air outlet 1 on the bottom and the top of casing 4, the bottom of casing 4 is provided with Qianmen 5, air inlet 12 and air outlet 1 can be located at casing 4 around.Coarse filtration layer 12a, adsorption filtration layer 12b, low-temperature plasma layer 12c (three plies) and blower fan and Limax air channel 7 are housed in the air inlet 12 in casing 4, photocatalysis apparatus 9, electronic dust-collecting device 10, high efficiency filter and negative oxygen ion generator 8 are housed from bottom to up successively in the outlet of these 7 upper ends, Limax air channel.Described blower fan is the axial flow centrifugal fan, by air inlet 12 air intakes at four sides.The power line 13 of complete machine is introduced from the bottom of casing 4.
The structure of described photocatalysis apparatus 9 is referring to Fig. 3 and Fig. 4, and the ultraviolet lamp tube 93 that the parallel array formula is arranged in its shell 91 is provided with felted load Detitanium-ore-type TiO as excitation source between this ultraviolet lamp tube 93
2Photocatalytic sheet (be coated in epoxy plate 94 surface or be arranged on substrate surface between the ultraviolet lamp tube 93), the lower port of shell 91 is provided with the deflector 99 that is obliquely installed, deflector 99 constitutes tapered opening and is connected with the upper end outlet in described Limax air channel 7, and the upper port 92 of shell 91 is connected with the following end entrance of described electronic dust-collecting device 10.The two end supports of ultraviolet lamp tube 93 leaves between the adjacent ultraviolet lamp tube 93 at interval between two epoxy plates that be arranged in parallel 94, constitutes between these two epoxy plates 94 and between the shell 91 to be cleaned gas passage.Be arranged with starter installing plate 97 in parallel in described epoxy plate 94 outsides, starter 96 and terminal ballast 90 are installed in the both sides of this starter installing plate 97.Two epoxy plates 94 and they with starter installing plate 97 between all be connected with 98 support fixation by connecting rod 95.The segment distance because plasma and photocatalysis layer have been separated by, the probability that a large amount of positive and negative ion that produced by plasma generator are buried in oblivion in flow process significantly increases, and can reduce therefore that these ions may neutralize with photocatalyst surface light induced electron and hole and the negative effect that brings to photocatalysis.
The present invention can control by an automaton, this automaton comprises controller 3, gas sensor 14 and functional switch (panel) 2, the input of controller 3 is connected with some gas sensors 14, and gas sensor 14 is used for the harmful gas of monitoring of environmental (as H
2S, NO
xDeng gas) so that control the switch of relevant clean unit automatically.The outfan of controller 3 control described blower fan, low-temperature plasma layer, photocatalysis apparatus 9, electronic dust-collecting device 10, HAPE high efficiency filter and negative oxygen ion generator 7 unlatching, close or rotating speed.
Work process of the present invention is:
After starting, this device,, allow cleaned air passes return environment through steps such as coarse filtration, plasma, photocatalysis Decomposition harmful gas, absorption ozone with the air inlet 12 suction depurators of surrounding air from the bottom.This device mainly contains following three purification process:
1. coarse filtration: mainly remove bulky grain dust, pollen and smog.
2. plasma, photocatalysis coupled unit: the present technique critical component respectively by low temperature plasma purify, the light catalytic purifying unit constitutes.Inorganic, organic harmful gas in the contaminated air, bacterial virus, stink etc. will be at this element through corona discharges, photocatalysis Decomposition, Electrostatic Absorption and be purified.Plasma, photocatalysis coupled technology have wide spectrum and two-fold advantage efficiently, and all effective to common pathogens such as escherichia coli, staphylococcus aureus, viruses, killing rate is up to more than 97%.To indoor harmful gas (as formaldehyde, benzene, H
2S, NO
2, SO
2Deng) all can degrade.
3. efficient adsorption filtration: its effect is the CO that produces in the plasma for purification process
2, O
3Make adsorption treatment Deng by-product, prevent its injury human body.The anion of anion generator generation makes cleaned air passes more pure and fresh in addition.
By to test of the present invention, draw following result:
This light catalytic purifying device is a composite photocatalyst with the NACF felt-like material of titanium dichloride load, is excitation source with the uviol lamp of 8W, by rational structure optimization, make the preferable principle prototype of catalytic performance and operability, show by performance evaluating, at 30m
3In the appraisement system of enclosed space, the degradation efficiency of target contaminants such as the interior formaldehyde to the finite concentration scope of 60min, ammonia, trichloroethylene reaches or is better than the examination target of defined in the contract fully all above 50%.
The key technical indexes: actual test result
The purifying rate of PARA FORMALDEHYDE PRILLS(91,95) (60min): 〉=50% 51.7%
To NH
3Purifying rate (60min): 〉=50% 84.6%
Purifying rate to VOC (60min): 〉=50% 69.3%
The performance evaluating of model machine of the present invention being handled formaldehyde shows, PARA FORMALDEHYDE PRILLS(91,95) has good removal ability, but it is saturated fast and equilibrium concentration is high, can be in typical pollutants such as the formaldehyde of intermediate concentration, ammonia, trichloroethylene be removed to reduced levels than the short period, be different from general chemical treatment technology and need consume third party's oxidation or Reducing agent, there is not the absorption saturation problem, whole mineralization process is an end product with carbon dioxide and water, simple, the environmental protection of a whole set of technological operation, the practical and popularizing value that tool is higher.In addition, this problem directly is guiding with the product development, directly market-oriented and customer's specific indexes, and tool specificity design concept is convenient to carry out the research and development of technology innovation and subsequent product, and tool is market prospect preferably.
For the performance evaluation of device, with 30m
3Enclosed space is an appraisement system, injects target contaminant by bubbling, and with the inner ventilation circulation acquisition concentration balance of certain hour, the test after all data are finished with saturated absorption is as the criterion.
Below list the light catalytic purifying device to the degradation data of different target pollutant and provide the concrete operations condition:
(1) to photocatalysis of the present invention performance evaluating partly:
Target contaminant: formaldehyde, trichloroethylene, ammonia
Appraisement system: 30m
3Estimate the chamber
Test type: the light catalytic purifying device of Photocatalysis Inst., Fuzhou Univ's design
Test instrunment: PGM-7240 volatile organic gas tester (trichloroethylene, ammonia), Interscan formaldehyde tester (formaldehyde)
Test condition: estimate 24 ℃ of indoor environment temperatures, relative humidity 70%, adopt Bubbling method with target contaminant steam blast estimate indoor, bubbling time 5～30min, equilibration time 60min then tests equilibrium concentration, opens the concentration change of ultraviolet source monitoring degradation process simultaneously, other modules that principle prototype is all removed in all tests only keep the light catalytic purifying device.
Test result sees Table 1 and table 2:
Concentration change in each target contaminant photocatalytic degradation process of table 1
| Formaldehyde | Ammonia | Trichloroethylene | |||
| Response time (min) | Concentration (ppm) | Response time (min) | Concentration (ppm) | Response time (min) | Concentration (ppm) |
| 0 | 0.60 | 0 | 28.91 | 0 | 27.70 |
| 60 | 0.29 | 30 | 10.67 | 60 | 8.50 |
| 120 | 0.18 | 60 | 4.46 | 120 | 6.21 |
| 150 | 0.15 | 180 | 3.26 | 180 | 4.6 |
| 60min purification efficiency: 51.7% | 60min purification efficiency: 84.6% | 60min purification efficiency 69.3% | |||
Table 2 concentration of formaldehyde and time relation (photocatalysis part)
| Response time (h) | Concentration of formaldehyde (ppm) |
| 0 | 0.35 |
| 1 | 0.34 |
| 2 | 0.35 |
| 5 | 0.35 |
| 9 | 0.35 |
Conclusion: as can be known by listed experimental data in the table, the activated carbon fibrous composite of titanium dichloride load of the present invention, the independent light arrangement for catalytic purification that it obtains by the Rational structure design, the purification efficiency of target contaminant in 60min such as formaldehyde, ammonia, trichloroethylene that to initial concentration is 0.6ppm, 26.91ppm, 27.7ppm all reaches more than 50%, embody good photocatalysis effect, reached or be better than the prescription of contract fully.
The good coupling of the porous activated carbon fiber suitable absorption field of force and optically catalytic TiO 2 behavior, its synergy obviously promotes the mineralising process of target contaminant, the removal effect of object obviously is better than prior art and gets photocatalysis part (is example with formaldehyde).
(2) test of the whole model machine of the present invention:
Appraisement system: 30m
3Estimate the chamber;
Test type: principle of the invention model machine (complete machine);
Test instrunment: PGM-7240 volatile organic gas tester (trichloroethylene, ammonia), Interscan formaldehyde tester (formaldehyde);
Test condition: estimate 24 ℃ of indoor environment temperatures, relative humidity 70%, adopt Bubbling method with target contaminant steam blast estimate indoor, bubbling time 5～30min, equilibration time 30min then tests equilibrium concentration, opens the concentration change of ultraviolet source monitoring degradation process simultaneously, other modules that principle prototype is all removed in all tests only keep the light catalytic purifying device.
Test result: as can be known by the experimental result curve (target contaminants such as ammonia, trichloroethylene, formaldehyde are with the concentration curve of ultraviolet lighting time) of Fig. 6～Fig. 8, the present invention is to initial concentration is 31.30ppm, 21.50ppm, 19.2ppm ammonia, trichloroethylene, the equal tool of formaldehyde is good removal effect, removal efficiency all reaches more than 60% in the response time of 30min, particularly to typical pollutant trichloroethylene and formaldehyde, its 30min has removed more than 90% with interior, has embodied combinative structure characteristics rapidly and efficiently.In addition, the difference of physical indexs such as target molecule self chemical property and space structure can cause the different of behaviors such as its absorption on adsorbing material and photocatalyst, degraded, migration, therefore above-mentioned three kinds of pollutant remove speed and there is difference in efficient.
Claims (4)
1. photocatalysis plasma harmful gas purifying device, comprise casing 4, be respectively equipped with air inlet 12 and air outlet 1 at the two ends of this casing, in the air inlet 12 of this casing and air outlet 1, the coarse filtration layer is housed successively, the adsorption filtration layer, the low-temperature plasma layer, photocatalysis apparatus 9, electronic dust-collecting device 10, HAPE high efficiency filter and negative oxygen ion generator 8, it is characterized in that: blower fan and Limax air channel 7 are housed in described air inlet, in the outlet in Limax air channel 7 photocatalysis apparatus 9 is housed, the structure of this photocatalysis apparatus 9 is: the ultraviolet lamp tube 93 that the parallel array formula is arranged in its shell 91 is provided with felted load Detitanium-ore-type TiO as excitation source between this ultraviolet lamp tube 93
2Photocatalytic sheet, the lower port of shell 91 is connected with the outlet in described Limax air channel 7, the upper port of shell 91 is connected with the inlet of described electronic dust-collecting device 10.
2. photocatalysis plasma harmful gas purifying device according to claim 1 is characterized in that: described air inlet 12 is located at the four sides of casing 4 bottoms, and described blower fan is the axial flow centrifugal fan, by air inlet 12 air intakes at four sides.
3. photocatalysis plasma harmful gas purifying device according to claim 1, it is characterized in that: also comprise an automaton, this device comprises controller 3, gas sensor 14 and functional switch (panel) 2, the input of controller 3 is connected with some gas sensors 14, and gas sensor 14 is used for the harmful gas of monitoring of environmental (as H
2S, NO
xDeng gas) so that control the switch of relevant clean unit automatically; The outfan of controller 3 control described blower fan, low-temperature plasma layer, photocatalysis apparatus 9, electronic dust-collecting device 10, HAPE high efficiency filter and negative oxygen ion generator 7 unlatching, close or rotating speed.
4. photocatalysis plasma harmful gas purifying device according to claim 1, it is characterized in that: the two end supports of the many ultraviolet lamp tubes 93 of described photocatalysis apparatus 9 is between two epoxy resin boards that be arranged in parallel 94, leave between the adjacent ultraviolet lamp tube 93 at interval, formation is cleaned gas passage between these two epoxy plates 94 and between the shell 91; Be arranged with the starter installing plate in parallel in described epoxy plate 94 outsides, starter and terminal ballast are installed in the both sides of this starter installing plate; Be connected with the deflector that is obliquely installed in the lower end of described epoxy plate 94, in order to form a conical entrance in the described lower end that is cleaned gas passage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101206497A CN101125215B (en) | 2007-08-23 | 2007-08-23 | Photocatalytic plasma harmful gas purifying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101206497A CN101125215B (en) | 2007-08-23 | 2007-08-23 | Photocatalytic plasma harmful gas purifying device |
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| Publication Number | Publication Date |
|---|---|
| CN101125215A true CN101125215A (en) | 2008-02-20 |
| CN101125215B CN101125215B (en) | 2010-06-09 |
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ID=39093405
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|---|---|---|---|
| CN2007101206497A Expired - Fee Related CN101125215B (en) | 2007-08-23 | 2007-08-23 | Photocatalytic plasma harmful gas purifying device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817002A (en) * | 2014-03-18 | 2014-05-28 | 南京云创存储科技有限公司 | Outdoor air purification device |
| CN104728945A (en) * | 2015-02-12 | 2015-06-24 | 杭州光美环保科技有限公司 | Stacked type intelligent air treatment system |
| CN106237843A (en) * | 2016-08-29 | 2016-12-21 | 四川环翔科技有限责任公司 | A kind of air purification method based on lower temperature plasma technology |
| CN107029527A (en) * | 2017-05-27 | 2017-08-11 | 南京大学环境规划设计研究院有限公司 | A kind of fitting space peculiar smell purification method and device |
| CN107174879A (en) * | 2017-04-18 | 2017-09-19 | 上海英宇环保科技有限公司 | A kind of plasma air purifier |
| CN113944975A (en) * | 2020-06-30 | 2022-01-18 | 广东美的制冷设备有限公司 | Sterilizing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2160086Y (en) * | 1993-05-17 | 1994-03-30 | 北京神龙电器公司 | Air changing regulator |
| CN1306877A (en) * | 2000-01-24 | 2001-08-08 | 俞其进 | Electronically dust-collecting air purifier |
| CN2655913Y (en) * | 2003-10-31 | 2004-11-17 | 罗炳灿 | plasma air sterilization purifier |
| CN1597090A (en) * | 2004-04-01 | 2005-03-23 | 福州大学 | Preparation of photocatalyst without high temperature sintering treatment and its application |
| CN2733220Y (en) * | 2004-05-31 | 2005-10-12 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Air purifying and sterilizing machine |
| CN2756997Y (en) * | 2004-12-24 | 2006-02-08 | 河南新飞电器有限公司 | Air purifier |
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2007
- 2007-08-23 CN CN2007101206497A patent/CN101125215B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817002A (en) * | 2014-03-18 | 2014-05-28 | 南京云创存储科技有限公司 | Outdoor air purification device |
| CN104728945A (en) * | 2015-02-12 | 2015-06-24 | 杭州光美环保科技有限公司 | Stacked type intelligent air treatment system |
| CN104728945B (en) * | 2015-02-12 | 2017-09-12 | 浙江禄豪环保科技有限公司 | A kind of stacked intelligent air processing system |
| CN106237843A (en) * | 2016-08-29 | 2016-12-21 | 四川环翔科技有限责任公司 | A kind of air purification method based on lower temperature plasma technology |
| CN107174879A (en) * | 2017-04-18 | 2017-09-19 | 上海英宇环保科技有限公司 | A kind of plasma air purifier |
| CN107029527A (en) * | 2017-05-27 | 2017-08-11 | 南京大学环境规划设计研究院有限公司 | A kind of fitting space peculiar smell purification method and device |
| CN113944975A (en) * | 2020-06-30 | 2022-01-18 | 广东美的制冷设备有限公司 | Sterilizing machine |
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| Publication number | Publication date |
|---|---|
| CN101125215B (en) | 2010-06-09 |
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