CN2778371Y - Plasma and light catalyzing combined air purifier device - Google Patents

Plasma and light catalyzing combined air purifier device Download PDF

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Publication number
CN2778371Y
CN2778371Y CN 200520040198 CN200520040198U CN2778371Y CN 2778371 Y CN2778371 Y CN 2778371Y CN 200520040198 CN200520040198 CN 200520040198 CN 200520040198 U CN200520040198 U CN 200520040198U CN 2778371 Y CN2778371 Y CN 2778371Y
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CN
China
Prior art keywords
photocatalysis
plasma generator
net
temperature plasma
low
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CN 200520040198
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Chinese (zh)
Inventor
陈刚
牛炳晔
崔黎明
郤国良
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上海锦惠复洁环境工程有限公司
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Priority to CN 200520040198 priority Critical patent/CN2778371Y/en
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Abstract

The utility model discloses an air purifying device which utilizes the synergistic action of plasma purifying technology and photocatalysis purifying technology to eliminate toxic harmful gases so as to achieve the purpose of air purification. The device is mainly composed of a filter screen (1), a low temperature plasma generator set (2), an electrostatic filter screen set (3), a photocatalysis unit composed of alternately arranged photocatalysis nets and ultraviolet lamps (5), and a fan (6). The utility model can effectively purify the toxic harmful gases produced in the occasions such as municipal sewage treatment facilities, industrial production, business places, recreation places, hotels, office buildings, living rooms, etc., and has the characteristics of broad spectrum and high efficiency.

Description

A kind of plasma and photocatalysis compound air purification device
Technical field
The utility model belongs to environmental protection technical field, is specifically related to a kind of air cleaning unit.More particularly, relate to a kind of VOC and other pernicious gases that occasions such as municipal wastewater treatment facility, industrial production, commercial public place of entertainment, hotel, office building and room are produced and be converted into the device that discharges behind the innocuous substance.
Technical background
Along with the raising of people to environmental quality requirement, to the poisonous and harmful gaseous contaminant of fields such as urban operating mechanism, industrial production dischargings (as H 2S, SO 2, NH 3, NO xVOCs etc.) administering is the key of improving environmental quality, and these pollutants had not both had recovery value, endangers the healthy of ecological environment and people again; therefore, how these toxic and harmfuls of purified treatment have become urgent problem in the field of environment protection.
In order to improve air quality, people have done a large amount of work, and such as the employing charcoal absorption method of purification, chemical reaction method, catalytic purification method, biological clarification etc., but all there is certain limitation in these methods.Such as, though the purification speed of the charcoal absorption method of purification is fast, and has absorption purifying effect to a lot of pollutants, there is a saturated extent of adsorption in active carbon to the absorption of pollutant; Approaching more when saturated when absorption, adsorption rate is slow more, when absorption reaches capacity adsorbance, just loses clean-up effect, and this moment must be to active carbon processings of regenerating, partly to recover its absorption property; From the viewpoint analysis that system environments is polluted, the process of charcoal absorption purification and regeneration is the process with pollution transportation, therefore can think that it is not a kind of air purification method completely.Chemical reaction method utilizes various chemical substances and pollutant generation chemical reaction to reach the purpose of air cleaning, as removing airborne hydrogen sulfide with ferrous sulfate or aqua oxidation are ferrous, with oxidation aldehyde materials such as acid iodide etc., these can constantly be consumed in purification process with the material (being also referred to as deodorant or deodorant) of pollutant generation chemical reaction, and a kind of deodorant only is only effectively the pollutant of limited classification.The catalytic purification method normally adopts catalyst such as noble metal that catalytic action takes place under uniform temperature, with the pollutant oxidation or be reduced to the nonhazardous material, wants additional heating device usually.Biological clarification utilizes microorganism to purify air, because airborne pollutant kind is various, brings difficulty to culture of strains.
Lower temperature plasma technology and photocatalysis technology are the novel advanced air purifying process that emerged in recent years.Non-thermal plasma trap is to utilize the active group that corona discharge produces under the normal temperature and pressure to decompose (as the CN1515840A) that airborne harmful components purify air, and photocatalysis technology is to utilize ultraviolet light or excited by visible light titanium oxide semiconductor ultrafine particle to produce hole and electronics, these holes and electron transfer be to particle surface, generates active group (as hydroxyl radical free radical OH and HO with the adsorbed water or the hydroxyl effect of photocatalyst surface 2 -Deng) come decomposing pollutant, to realize the purification (as CN1456357A, CN1463754A) of air.These two kinds of technology all have the reaction condition gentleness, react the advantage that thoroughly, almost all contaminants in the air is all had Governance Ability.Studies show that, have certain synergy between lower temperature plasma technology and the photocatalysis technology, therefore how by some technological means with both uses that combines, become the focus of the previous research of order with further raising purification efficiency.
Mainly be divided into two classes in the existing plasma one photocatalysis complex technique: (1) is attached directly to photochemical catalyst on the plasma producing apparatus, apply photocatalyst film (CN 2660374, EP1249265) as the tube wall at the plasma generator tube, this complex method exists photocatalyst surface to amass lower and increases the shortcoming that plasma device prepares difficulty.(2) electromagnetic wave with plasma generation is the excitation source (JP 2000325447) of photochemical catalyst, the greatest problem that this complex method exists be plasma generation the light intensity that can be used for the exciting light catalyst a little less than, be not enough to cause a large amount of photocatalytic degradation reactions.
Summary of the invention
The purpose of this utility model provides a kind of device of air cleaning, more specifically say so and make full use of plasma technique and photocatalysis technology catharsis separately, take into account the synergy between them simultaneously, provide a kind of air cleaning unit that is fit to most of gaseous contaminants, with the toxic and harmful of occasions such as effective improvement urban operating mechanism, industrial production, commercial public place of entertainment, hotel, office building and room generation.
The air cleaning unit that the utility model provides is by screen pack 1, a low-temperature plasma generator group 2, a static filter screen group 3, be spaced photocatalysis unit and the blower fan 6 formed by photocatalysis net 4 and uviol lamp 5 and form; Its structure as shown in Figure 1.Wherein, screen pack 1 is positioned at the air intlet place, low-temperature plasma generator group 2 places after the screen pack 1, and static net group 3 is spaced between the photocatalysis unit of forming in low-temperature plasma generator group 2 and by photocatalysis net 4 and uviol lamp 5, and blower fan 6 is positioned at the exit of device.
In this device, described low-temperature plasma generator group 2 ionic medium generators generally can have 3-10, and its arrangement that spatially misplaces for example becomes " product " font to arrange, so that make the plasma density in the device distribute more even.It is 4-15kv that above-mentioned low-temperature plasma generator generally can adopt base to press, and high pressure is the corona discharge pulse of 30-50kv.
In this device, described static net group 3 generally can be made up of the stainless steel that 3-5 is arranged in parallel, and mesh is the 40-120 order, and the distance between two nets is 10-40cm.
In this device, described photocatalysis net 4 is the sandwich construction of being made up of polyester form net, activated carbon granule, nano titanium oxide photocatalyst.Wherein, the particle diameter of nano-titanium oxide is the 20-100 nanometer, and the porosity of polyester form net is 10-40pis, and active carbon is a granulated carbon, and being specially particle diameter is 60-400 purpose high iodine number coconut husk charcoal or fruit shell carbon.Its preparation method can be referring to the CN116211 patent, and concrete steps are, earlier at the online bonding granular activated carbon of polyester form, then by technology loaded with nano titania photocatalysts such as sprayings.The power of described uviol lamp 5 is 20-40w; Photocatalysis net 4 is arranged with uviol lamp 5 spaces.Usually, the photocatalysis unit is made up of with uviol lamp 5 2-5 group photocatalysis net 4.
In this device, the air quantity of blower fan 6 is generally 200-8000m 3/ h.
The step of utilizing above-mentioned air cleaning unit to purify air is as follows:
(1) by blower fan 6, make air to be clean by screen pack 1, remove particle wherein;
(2) air after the filtration utilizes active group (OH, the HO of plasma generator generation by low-temperature plasma generator group 2 2 -, O -) and ozone etc. eliminate airborne poisonous and harmful substance;
(3) air by plasma generator, by a static filter screen group 3, filter on the one hand in plasma unit with on the dust of electric charge, bury in oblivion simultaneously charge species that plasma generator produces especially can with the anion of electropositive cavitation, to eliminate its negative effect to next step photocatalysis unit;
(4) air by the static filter screen is spaced the photocatalysis unit of forming through the photocatalysis net 4 by the loaded with nano titanium oxide with uviol lamp 5 again, utilizes the photocatalysis of the titanium oxide pollutant in further purifying air;
(5) utilize blower fan 6 to discharge the air that purifies.
The utility model is combined with each other plasma technology and photocatalysis technology, by arranging of reasonable arrangement plasma generating unit and photocatalysis unit, has both made full use of both catharsis separately, has also taken into account synergy between the two simultaneously.Compared with prior art, the utlity model has following advantage and beneficial effect:
(1) have certain synergy between low temperature plasma purification techniques and the light catalytic purifying technology, plasma can promote light-catalyzed reaction; The utility model is arranged by reasonable arrangement plasma generating unit and photocatalysis unit, has both made full use of both catharsis separately, has also taken into account synergy between the two simultaneously, and purification efficiency is higher;
(2) ultraviolet light in the plasma can the exciting light catalyst, and itself can promote light-catalyzed reaction materials such as the ozone in the plasma, but the anion of its generation can combine with the hole that photocatalyst surface has a reactivity, thereby suppresses photocatalysis; The utility model is by the distance of adjusting plasma cell and photocatalysis unit, and between placement screen pack material, fully to flood the anion that the plasma unit that goes out produces, eliminates its negative effect to the photocatalysis unit;
(3) this method and device have broad spectrum activity, almost the common toxic pernicious gas are all had clean-up effect preferably, make it can reach discharge standard.
Description of drawings
Fig. 1 is the device schematic diagram of air purification method provided by the utility model.
Number in the figure: 1 is screen pack, and 2 is the low-temperature plasma generator group, and 3 is static net group, and 4 is photocatalysis net, and 5 is uviol lamp, and 6 is blower fan.
The specific embodiment
Further the utility model is described below in conjunction with drawings and Examples.
The air purification method that the utility model provides, make full use of lower temperature plasma technology and photocatalysis technology catharsis separately, and the synergy degradation of sewage of taking into account is between the two handled the toxic and harmful that occasions such as urban operating mechanism, industrial production, commercial public place of entertainment, hotel, office building and room produce, to reach the purpose that purifies air, its step is as follows:
(1) by blower fan 6, make air to be clean by screen pack 1, remove coarse granule wherein;
(2) air after the filtration utilizes active group (OH, the HO of plasma generator generation by low-temperature plasma generator 2 2 -, O -) and ozone etc. decompose airborne poisonous and harmful substance;
(3) air by plasma generator is by one group of stainless (steel) wire 3, to flood the cation that the plasma generator that goes out produces, to eliminate its negative effect to next step photocatalysis unit;
(4) air by stainless (steel) wire is spaced the photocatalysis unit of forming through the photocatalysis net 4 by the loaded with nano titanium oxide with uviol lamp 5 again, utilizes the photocatalysis of titanium oxide further to purify air;
(5) utilize blower fan 6, discharge the air that purifies.
It is 4kV~15kV that above-mentioned low-temperature plasma generator 2 adopts base to press, and high pressure is the corona discharge pulse of 30kV~50kV; Low-temperature plasma generator has some groups, in order to make the plasma density distribution uniform in the purifier, spatially arranges by " product " font between the plasma generator group.
Above-mentioned stainless (steel) wire 3 is 40~120 orders, goes out for the cation that plasma generator is produced fully floods, and stainless (steel) wire can be installed 3~5 groups, interval 10~40cm between two groups.
Above-mentioned photocatalysis net 4 is prepared from by the described method of patent CN162211, and this net is the sandwich construction of being made up of polyester form, activated carbon granule, nano-titanium oxide, and the granularity of nano-titanium oxide is 20~100 nanometers.
Above-mentioned ultraviolet lamp tube 5 every power 20~40W place one group of ultraviolet lamp tube between per two groups of catalysis nets.
The air quantity of above-mentioned blower fan 6 is 200~8000m 3/ h.
Embodiment
Adopt this device at certain sewage treatment plant's pumping plant, air quantity 3000m 3/ h, low-temperature plasma generator group 2 is made up of 4 generators, and the stainless (steel) wire group is formed (spacing 30cm) by 3 nets, 2 groups of photocatalysis nets, 1 group of uviol lamp, totally 2, through measuring hydrogen sulfide inlet concentration 0.21mg/m 3, exit concentration 0.03mg/m 3, reach 1 grade of discharge standard of country, degradation rate 81%.

Claims (5)

1, a kind of air cleaning unit is characterized in that by screen pack (1) one low-temperature plasma generator group (2), a static filter screen group (3), is spaced photocatalysis unit and the blower fan (6) formed by photocatalysis net (4) and uviol lamp (5) and forms; Wherein, screen pack (1) is positioned at the air intlet place, low-temperature plasma generator group (2) places screen pack (1) afterwards, static net group (3) is positioned at low-temperature plasma generator group (2) and is spaced between the photocatalysis unit of forming by photocatalysis net (4) and uviol lamp (5), and blower fan (6) is positioned at the exit of device.
2, air cleaning unit according to claim 1 is characterized in that the low-temperature plasma generator in the described low-temperature plasma generator group 2 has 3-10, spatially becomes dislocation to arrange.
3, air cleaning unit according to claim 1 is characterized in that described static filter screen group (3) is made up of the stainless (steel) wire that 3-5 is arranged in parallel, and mesh is the 40-120 order, and the distance between two stainless (steel) wires is 10-40cm.
4, air cleaning unit according to claim 1 is characterized in that photocatalysis net (4) is organized by 2-5 in described photocatalysis unit and uviol lamp (5) is formed.
5, air cleaning unit according to claim 1, it is characterized in that photocatalysis net (4) by the polyester form net, on foam web bonding activated carbon granule, the nano titanium dioxide photocatalyst of load is formed; The porosity 10-40pis of foam web, active carbon be particle diameter at 60-400 purpose high iodine number coconut husk charcoal or fruit shell carbon, the particle diameter of nano-titanium oxide is 20~100 nanometers.
CN 200520040198 2005-03-17 2005-03-17 Plasma and light catalyzing combined air purifier device CN2778371Y (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20100478A1 (en) * 2010-06-07 2011-12-08 Ecocity S R L Ambient air purification device
CN102861504A (en) * 2012-09-12 2013-01-09 广东森洋环境保护工程设备有限公司 Device for treating organic waste gas by applying photochemical technology
CN103056155A (en) * 2012-12-25 2013-04-24 浙江工商大学 Reactor for treating contaminated soil with low-temperature plasma and photocatalysis and treatment method thereof
CN103256662A (en) * 2013-05-27 2013-08-21 胡达 Air purifier
CN103285732A (en) * 2013-06-17 2013-09-11 珠海益佳生物科技有限公司 Air purification device and air purifier consisting formed by device
CN103615765A (en) * 2013-10-22 2014-03-05 范崇政 Plasma wind nanometer photocatalytic air purifier
CN103836730A (en) * 2014-03-27 2014-06-04 顾勤刚 Composite photo-catalyst air purifying equipment and method
CN104319645A (en) * 2014-10-21 2015-01-28 苏州市世纪晶源光电科技有限公司 Power distribution cabinet with antistatic device
CN106390620A (en) * 2016-11-30 2017-02-15 南京小脚印网络科技有限公司 Novel exhaust gas filtering device
CN106642841A (en) * 2016-12-27 2017-05-10 中国人民解放军第二军医大学第二附属医院 Cooling system used during spinal surgery
CN106731577A (en) * 2016-12-29 2017-05-31 上海新耦合空气净化技术有限公司 A kind of air cleaning unit of volatile organic contaminant
CN106731541A (en) * 2016-11-21 2017-05-31 国佳环境科技湖北连锁有限公司 Low temperature plasma waste gas cleaning device and purification method
CN106861389A (en) * 2017-04-08 2017-06-20 苏州鱼翔环境工程有限公司 A kind of VOC off-gas cleaning equipments and purification method
CN107044687A (en) * 2016-06-30 2017-08-15 北京都蓝科技有限公司 Photocatalytic air disinfection clarifier
CN107308796A (en) * 2017-08-08 2017-11-03 苏州耐德新明和工程技术有限公司 A kind of composite exhaust gas processor
CN109331643A (en) * 2018-10-12 2019-02-15 浙江大学台州研究院 The device and method of plasma-catalytic oxidation benzene homologues pollutant

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20100478A1 (en) * 2010-06-07 2011-12-08 Ecocity S R L Ambient air purification device
CN102861504A (en) * 2012-09-12 2013-01-09 广东森洋环境保护工程设备有限公司 Device for treating organic waste gas by applying photochemical technology
CN102861504B (en) * 2012-09-12 2014-08-20 广东森洋环境保护工程设备有限公司 Device for treating organic waste gas by applying photochemical technology
CN103056155B (en) * 2012-12-25 2014-06-25 浙江工商大学 Reactor for treating contaminated soil with low-temperature plasma and photocatalysis and treatment method thereof
CN103056155A (en) * 2012-12-25 2013-04-24 浙江工商大学 Reactor for treating contaminated soil with low-temperature plasma and photocatalysis and treatment method thereof
CN103256662A (en) * 2013-05-27 2013-08-21 胡达 Air purifier
CN103256662B (en) * 2013-05-27 2017-02-08 胡达 Air purifier
CN103285732A (en) * 2013-06-17 2013-09-11 珠海益佳生物科技有限公司 Air purification device and air purifier consisting formed by device
CN103615765A (en) * 2013-10-22 2014-03-05 范崇政 Plasma wind nanometer photocatalytic air purifier
CN103836730A (en) * 2014-03-27 2014-06-04 顾勤刚 Composite photo-catalyst air purifying equipment and method
CN104319645A (en) * 2014-10-21 2015-01-28 苏州市世纪晶源光电科技有限公司 Power distribution cabinet with antistatic device
CN107044687A (en) * 2016-06-30 2017-08-15 北京都蓝科技有限公司 Photocatalytic air disinfection clarifier
CN106731541A (en) * 2016-11-21 2017-05-31 国佳环境科技湖北连锁有限公司 Low temperature plasma waste gas cleaning device and purification method
CN106390620A (en) * 2016-11-30 2017-02-15 南京小脚印网络科技有限公司 Novel exhaust gas filtering device
CN106642841A (en) * 2016-12-27 2017-05-10 中国人民解放军第二军医大学第二附属医院 Cooling system used during spinal surgery
CN106731577A (en) * 2016-12-29 2017-05-31 上海新耦合空气净化技术有限公司 A kind of air cleaning unit of volatile organic contaminant
CN106731577B (en) * 2016-12-29 2019-08-20 上海新耦合空气净化技术有限公司 A kind of air cleaning unit of volatile organic contaminant
CN106861389A (en) * 2017-04-08 2017-06-20 苏州鱼翔环境工程有限公司 A kind of VOC off-gas cleaning equipments and purification method
CN106861389B (en) * 2017-04-08 2020-06-23 苏州鱼翔环境工程有限公司 VOC waste gas purification equipment and purification method
CN107308796A (en) * 2017-08-08 2017-11-03 苏州耐德新明和工程技术有限公司 A kind of composite exhaust gas processor
CN109331643A (en) * 2018-10-12 2019-02-15 浙江大学台州研究院 The device and method of plasma-catalytic oxidation benzene homologues pollutant

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