CN110075700A - A kind of ultraviolet catalytic oxidation method and net cover equipment handling VOCs - Google Patents
A kind of ultraviolet catalytic oxidation method and net cover equipment handling VOCs Download PDFInfo
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- CN110075700A CN110075700A CN201810072951.8A CN201810072951A CN110075700A CN 110075700 A CN110075700 A CN 110075700A CN 201810072951 A CN201810072951 A CN 201810072951A CN 110075700 A CN110075700 A CN 110075700A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of ultraviolet catalytic oxidation methods and net cover equipment for handling VOCs, it is related to VOCs pollutant purification technical field, the method that the invention uses ultraviolet catalytic oxidation, with ultraviolet catalytic oxidation net cover equipment, catalyst electron transition is excited by the ultraviolet light that ultraviolet lamp generates, generate the cation with oxidation, the water oxygen of catalyst surface is melted into hydroxyl free radical, the electronics of transition simultaneously is attracted to the ozone of catalyst surface and captures to form superoxide anion, and superoxide anion and hydroxyl free radical are by oxidation operation at CO2And H2O；The ultraviolet light of 253.7nm wavelength can make the ozone in air-flow become negative oxygen ion simultaneously, accelerate the decomposition of VOCs, to achieve the purpose that efficient process VOCs.
Description
Technical field
The present invention relates to VOCs pollutant purification technical field, especially a kind of ultraviolet catalytic oxidation side for handling VOCs
Method and net cover equipment.
Background technique
In recent years, with the rapid development of industry, as petroleum, chemical industry, dyestuff, synthetic material, plastic industry swift and violent hair
Exhibition, the air waste of generation is increasing, and the large area of haze in all parts of the country is caused to invade, and the body for seriously endangering human body is strong
Health.Especially VOCs pollutant is mostly carcinogen, and human body sucks the appearance that excessively will lead to various diseases, or even occurs
Canceration.Based on this, occur the method and apparatus of many processing VOCs pollutants at present, but these method treatment effeciencies are low,
Operating cost is high；Structure is complicated for these equipment, treatment effeciency is low, safety is poor, unstable, energy consumption is high, is unfavorable for VOCs dirt
Contaminate the processing of object, thus the method and apparatus for being badly in need of developing a kind of improvement VOCs pollutant being simple and efficient.
Summary of the invention
In view of the above problems, the first purpose of this invention is: the ultraviolet light for providing a kind of processing VOCs is urged
Change method for oxidation, the method is to handle VOCs by acting on using ultraviolet catalytic oxidation, to reach high-efficient, consume energy few
Purpose.
In view of the above problems, second object of the present invention is: the ultraviolet light for providing a kind of processing VOCs is urged
Change oxidation net cover equipment, the equipment is to achieve the purpose that efficient process VOCs by acting on using ultraviolet catalytic oxidation,
The equipment making is simple, high-efficient, without secondary pollution.
The technical solution adopted in the present invention is simple, efficiently, can solve low efficiency existing for conventional process VOCs method, at
This height, complex process problem.The present invention is passed through using the method for ultraviolet catalytic oxidation with ultraviolet catalytic oxidation equipment
The ultraviolet light that ultraviolet lamp generates excites catalyst electron transition, the cation with oxidation is generated, by catalyst surface
Water oxygen is melted into hydroxyl free radical, while the electronics of transition is attracted to the ozone of catalyst surface and captures to form superoxide anion,
Superoxide anion and hydroxyl free radical are by oxidation operation at CO2And H2O；The ultraviolet light of 253.7nm wavelength can make in air-flow simultaneously
Ozone become negative oxygen ion, accelerate the decomposition of VOCs, to achieve the purpose that purifying VOCs.
In order to realize that the first purpose of this invention, technical solution used in the embodiment of the present invention are as follows:
A kind of ultraviolet catalytic method for oxidation handling VOCs, the method is handled using ultraviolet catalytic oxidation
VOCs。
In order to realize that second object of the present invention, technical solution used in the embodiment of the present invention are as follows:
A kind of ultraviolet catalytic oxidation net cover equipment handling VOCs, the net cover device control cell includes fluorescent tube, described
Fluorescent tube is UV, visible light light pipe, and the UV, visible light light pipe peripheral hardware is equipped with external catalyst net cover, applies on the external catalyst net cover
There is catalyst, the catalyst is metal oxide.
The metal oxide includes TiO2And transition metal oxide, the transition metal oxide include Ni, Fe,
At least one of Co, Cu, Zn, Ce and Mn.
The metal oxide is applied to the internal or external middle at least one side of external catalyst net cover.
Ultraviolet lamp is dual wavelength ultraviolet line lamp in the UV, visible light light pipe, and power 130-160w, fluorescent tube length is
1700-2000mm, generation wavelength are the ultraviolet light of 253.7nm.
The external catalyst net cover is connect with the UV, visible light light pipe by the fixation bracket of 10~50cm, described ultraviolet
It can be seen that the shape of light pipe is cylindrical body, cube, cuboid or multiedge cylinder or cleat stanchion, the shape of the external catalyst net cover is
Cylindrical body, cube, cuboid, multiedge cylinder or cleat stanchion.
The net cover 10CM is best, attachment electronics and hydroxyl radical free radical on net cover.
The net cover equipment includes at least one net cover device control cell, outer described in the net cover device control cell
Portion is catalyzed net cover shape and described ultraviolet-visible tube shape any combination.
Using a kind of ultraviolet catalytic oxidation method of the invention and net cover equipment, pass through simple ultraviolet lamp, fixed branch
The assembling of frame, external catalyst net cover and power supply forms the unit of a set of simple and direct elimination VOCs, the combination of multiple units is existed
The equipment for forming a big elimination VOCs together can selectively switch ultraviolet lamp tube by artificial intelligence when necessary
Quantity with the method energy conservation of UV light combined catalyst, efficiently removes VOCs.
Further, the VOCs pollutant air-flow passes through the ultraviolet catalytic oxidation net cover equipment, described ultraviolet to urge
The ultraviolet lamp for changing oxidation net cover equipment center can issue the ultraviolet light of the wavelength, and the ultraviolet light of the wavelength makes through fixed branch
The outside catalysis net that frame is connected to ultraviolet catalytic oxidation net cover equipment covers upper catalyst and electron transition occurs, and electronics is from full of valence
Band transits to empty conduction band, leaves the extremely strong positively charged hole of oxidisability, is adsorbed on the ozone of catalyst particle surface at this time
Trapped electron forms superoxide anion, and the water oxygen for being adsorbed on catalyst surface is melted into hydroxyl free radical by the electronics of transition, surpasses
Negative oxygen ion and hydroxyl free radical are by oxidation operation at CO2And H2O。
Further, the ultraviolet lamp issues the ultraviolet light of 253.7nm wavelength, the ozone in air-flow can be made to become oxygen negative
Ion accelerates the decomposition of VOCs.
Using ultraviolet catalytic oxidation method and net cover equipment of the invention, issued by ultraviolet lamp inside equipment
The ultraviolet light of 253.7nm wavelength irradiates external catalyst net cover, makes the catalyst on net cover that electron transition, the sky that transition generates occur
Cave oxidation-adsorption then forms superoxide anion in the ozone of catalyst surface；The electronics of transition then oxidation-adsorption in catalyst
The water on surface forms hydroxyl free radical；VOCs is oxidized to nontoxic carbon dioxide by superoxide anion and hydroxyl free radical
And water；The ozone in air-flow is converted into negative oxygen ion simultaneously, accelerates the decomposition of VOCs, has also cleared up ozone.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: using processing of the invention
The ultraviolet catalytic oxidation method and net cover equipment of VOCs passes through simple ultraviolet lamp, fixed bracket, external catalyst net cover and electricity
The assembling in source, the equipment for forming an elimination VOCs, optionally switchs ultraviolet lamp quantity, realizes energy conservation and environmental protection purpose；It is logical
Cross ultraviolet light-catalyst and be used in combination method, generating has catalytic action hydrogen-oxygen anion and superoxide anion, using this two
Kind ionic oxide formation VOCs forms nontoxic carbon dioxide and water, realizes the purpose of removal VOCs, i.e., simple and environmentally friendly.Simultaneously
The ozone in ultraviolet light degradation air-flow that ultraviolet lamp generates generates negative oxygen ion, and negative oxygen ion can decompose VOCs, assisted oxidation
VOCs improves the removal efficiency of VOCs, has efficient, convenience.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is an a kind of net cover device control cell cross section for handling VOCs ultraviolet catalytic oxidation equipment of the present invention
Figure.Wherein, 1- ultraviolet lamp tube, the fixed bracket of 2-, 3- external catalyst net cover.
Fig. 2 is an a kind of net cover device control cell vertical section for handling VOCs ultraviolet catalytic oxidation equipment of the present invention
Figure.Wherein, 1- power supply line, 2- net cover, the both ends 3- fixing piece, 4- ultraviolet lamp tube.
Specific embodiment
Embodiment 1
Referring to Fig. 1, Fig. 1 shows a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs, device control cell
Including fluorescent tube 1, fluorescent tube 1 is UV, visible light light pipe, and UV, visible light light pipe periphery is provided with external catalyst net cover 3, external catalyst net
It covers 3 inner surfaces and is coated with catalyst, used catalyst is metal oxide.
Wherein, metal oxide includes TiO2And transition metal oxide, the transition metal oxide include Ni,
At least one of Fe, Co, Cu, Zn, Ce and Mn.
Ultraviolet lamp is dual wavelength ultraviolet line lamp, and power 150w, fluorescent tube length is 1900mm, generation wavelength 253.7nm
Ultraviolet light.
External catalyst net cover is connect with the UV, visible light light pipe by the fixation bracket of 10cm, the shape of UV, visible light light pipe
Shape is cylindrical body, cube, cuboid or multiedge cylinder or cleat stanchion, and the shape of external catalyst net cover is cylindrical body, cube, length
Cube, multiedge cylinder or cleat stanchion.
Technique using the removal VOCs of the present embodiment is as follows: VOCs air-flow ultraviolet catalytic oxidation net cover through the invention
The ultraviolet light of equipment, the 253.7nm wavelength that the catalyst of external catalyst net cover inner surface is issued by ultraviolet lamp inside net cover irradiates,
Make the catalyst on net cover that electron transition occur, the Hole oxidation that transition generates is adsorbed on the ozone of catalyst surface, then shape
At superoxide anion；Then oxidation-adsorption forms hydroxyl free radical in the water of catalyst surface to the electronics of transition；Superoxide anion and
VOCs is oxidized to nontoxic carbon dioxide and water by hydroxyl free radical；Simultaneously the ozone in air-flow be converted into oxygen bear from
Son accelerates the decomposition of VOCs, has also cleared up ozone.
Embodiment 2
Referring to Fig. 1, Fig. 1 shows a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs, device control cell
Including fluorescent tube 1, fluorescent tube 1 is UV, visible light light pipe, and UV, visible light light pipe periphery is provided with external catalyst net cover 3, external catalyst net
It covers 3 inner surfaces and is coated with catalyst, used catalyst is metal oxide.
Wherein, metal oxide includes TiO2And transition metal oxide, the transition metal oxide include Ni,
At least one of Fe, Co, Cu, Zn, Ce and Mn.
Ultraviolet lamp is dual wavelength ultraviolet line lamp, and power 150w, fluorescent tube length is 1900mm, generation wavelength 253.7nm
Ultraviolet light.
External catalyst net cover is connect with the UV, visible light light pipe by the fixation bracket of 30cm, the shape of UV, visible light light pipe
Shape is cylindrical body, cube, cuboid or multiedge cylinder or cleat stanchion, and the shape of external catalyst net cover is cylindrical body, cube, length
Cube, multiedge cylinder or cleat stanchion.
Technique using the removal VOCs of the present embodiment is as follows: VOCs air-flow ultraviolet catalytic oxidation net cover through the invention
The ultraviolet light of equipment, the 253.7nm wavelength that the catalyst of external catalyst net cover inner surface is issued by ultraviolet lamp inside net cover irradiates,
Make the catalyst on net cover that electron transition occur, the Hole oxidation that transition generates is adsorbed on the ozone of catalyst surface, then shape
At superoxide anion；Then oxidation-adsorption forms hydroxyl free radical in the water of catalyst surface to the electronics of transition；Superoxide anion and
VOCs is oxidized to nontoxic carbon dioxide and water by hydroxyl free radical；Simultaneously the ozone in air-flow be converted into oxygen bear from
Son accelerates the decomposition of VOCs, has also cleared up ozone.
Embodiment 3
Referring to Fig. 1, Fig. 1 shows a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs, device control cell
Including fluorescent tube 1, fluorescent tube 1 is UV, visible light light pipe, and UV, visible light light pipe periphery is provided with external catalyst net cover 3, external catalyst net
It covers 3 inner surfaces and is coated with catalyst, used catalyst is metal oxide.
Wherein, metal oxide includes TiO2And transition metal oxide, the transition metal oxide include Ni,
At least one of Fe, Co, Cu, Zn, Ce and Mn.
Ultraviolet lamp is dual wavelength ultraviolet line lamp, and power 150w, fluorescent tube length is 1900mm, generation wavelength 253.7nm
Ultraviolet light.
External catalyst net cover is connect with the UV, visible light light pipe by the fixation bracket of 50cm, the shape of UV, visible light light pipe
Shape is cylindrical body, cube, cuboid or multiedge cylinder or cleat stanchion, and the shape of external catalyst net cover is cylindrical body, cube, length
Cube, multiedge cylinder or cleat stanchion.
Technique using the removal VOCs of the present embodiment is as follows: VOCs air-flow ultraviolet catalytic oxidation net cover through the invention
The ultraviolet light of equipment, the 253.7nm wavelength that the catalyst of external catalyst net cover inner surface is issued by ultraviolet lamp inside net cover irradiates,
Make the catalyst on net cover that electron transition occur, the Hole oxidation that transition generates is adsorbed on the ozone of catalyst surface, then shape
At superoxide anion；Then oxidation-adsorption forms hydroxyl free radical in the water of catalyst surface to the electronics of transition；Superoxide anion and
VOCs is oxidized to nontoxic carbon dioxide and water by hydroxyl free radical；Simultaneously the ozone in air-flow be converted into oxygen bear from
Son accelerates the decomposition of VOCs, has also cleared up ozone.
Embodiment 4
Experimental provision and technique please refer to embodiment 1, and concentration for the treatment of is 1mol/m at normal temperatures and pressures3Toluene, catalysis
Agent is nickel-anatase titanium dioxide, and ultraviolet catalytic oxidation equipment is made of 6 net cover device control cells.Ozone free generates
Ultraviolet lamp and catalyst form the first catalytic reactor, the first catalytic reactor has 30% ozone meeting when reacting
Evolution comes.By 1mol/m3Ozone produces 1mol/m3Negative oxygen ion, degrade 1mol/m3Toluene consumes 1mol/m3Negative oxygen ion meter
Calculation needs ozone amount to should be 0.3x+100%, and (x is ozone production quantity, unit mol/m3).There is 1.3mol/m at this time3Negative oxygen ion is used for
1mol/m3The processing of toluene.
Embodiment 5
Experimental provision and technique please refer to embodiment 2, and concentration for the treatment of is 1mol/m at normal temperatures and pressures3Toluene, flow velocity
For 120m3/ h, catalyst are nickel-anatase titanium dioxide, and ultraviolet catalytic oxidation equipment is by 6 net cover device control cell groups
At.The ultraviolet lamp and catalyst that ozone free generates form the first catalytic reactor, the meeting when reacting of the first catalytic reactor
There is 20% ozone that can escape.By 1mol/m3Ozone produces 1mol/m3Negative oxygen ion, degrade 1mol/m3Toluene consumption
1mol/m3Negative oxygen ion calculating oxygen demand should be 0.2x+100%, and (x is ozone production quantity, unit mol/m3), have at this time
1.2mol/m3Negative oxygen ion is used for 1mol/m3The processing of toluene.
Embodiment 6
Experimental provision and technique please refer to embodiment 1, and concentration for the treatment of is 1mol/m at normal temperatures and pressures3Toluene, flow velocity
For 120m3/ h, catalyst are nickel-anatase titanium dioxide, and ultraviolet catalytic oxidation equipment is by 6 net cover device control cell groups
At.The ultraviolet lamp and catalyst that ozone free generates form the first catalytic reactor, the meeting when reacting of the first catalytic reactor
There is 10% ozone that can escape.By 1mol/m3Ozone produces 1mol/m3Negative oxygen ion, degrade 1mol/m3Toluene consumption
1mol/m3Negative oxygen ion calculating oxygen demand should be 0.1x+100%, and (x is ozone production quantity, unit mol/m3), have at this time
1.1mol/m3Negative oxygen ion is used for 1mol/m3The processing of toluene.By the comparison of embodiment 4,5,6: produced by embodiment 4
Negative oxygen ion it is more, illustrate more the fully oxidized decomposition of VOCs more can be illustrated purple when handling VOCs to reach high efficiency
The distance between outer lamp and catalyst influence ultraviolet ray intensity, and with the increase of distance, the energy of lamp greatly passes through light
Heat leakage, so that catalyst does not play a greater role, to influence the decomposition of VOCs.
Embodiment 7
Experimental provision and technique please refer to embodiment 1, with the ultraviolet light of ultraviolet lamp tube radiation 253.7nm wavelength
VOCs air-flow, can make the ozone in air-flow be decomposed into oxygen and negative oxygen ion, and negative oxygen ion promotes the decomposition of VOCs.It is being irradiated
Cheng Zhong, measurement aromatics, the generation situation of amine, olefines active material and hydroxyl free radical in O3 reaction process: aromatics
Substance is reacted with O3, and the yield of hydroxyl free radical is 30%；Amine substance reacts the yield of hydroxyl free radical with O3 35%；Alkene
Hydrocarbons are swift in response with O3, substantially the not generation of hydroxyl free radical.
Embodiment 8
Experimental provision and technique please refer to embodiment 1, with the ultraviolet light of ultraviolet lamp tube radiation 253.7nm wavelength
VOCs air-flow, can make the ozone in air-flow be decomposed into oxygen and negative oxygen ion, and negative oxygen ion promotes the decomposition of VOCs.It is being irradiated
Cheng Zhong, measurement aromatics, the generation situation of amine, olefines active material and hydroxyl free radical in O3 reaction process: aromatics
Substance is reacted with O3, and the yield of hydroxyl free radical is 10%；Amine substance reacts the yield of hydroxyl free radical with O3 21%；Alkene
Hydrocarbons are swift in response with O3, substantially the not generation of hydroxyl free radical.
Embodiment 9
Experimental provision and technique please refer to embodiment 1, with the ultraviolet light of ultraviolet lamp tube radiation 253.7nm wavelength
VOCs air-flow, can make the ozone in air-flow be decomposed into oxygen and negative oxygen ion, and negative oxygen ion promotes the decomposition of VOCs.It is being irradiated
Cheng Zhong, measurement aromatics, the generation situation of amine, olefines active material and hydroxyl free radical in O3 reaction process: aromatics
Substance is reacted with O3, and the yield of hydroxyl free radical is 10%；Amine substance reacts the yield of hydroxyl free radical with O3 15%；Alkene
Hydrocarbons are swift in response with O3, substantially the not generation of hydroxyl free radical.By the comparison of embodiment 7,8,9: implementing
The yield of 7 hydroxyl free radical of example is high, illustrates that ozone resolution ratio is high in embodiment 7, and it is more to generate negative oxygen ion, can well with fragrance
Class and amine substance reaction generate hydroxyl free radical, and further oxidation can reach the degradation of aromatics and amine, more illustrate
The distance between ultraviolet lamp and catalyst influence ultraviolet ray intensity, and with the increase of distance, the energy of lamp greatly passes through
Photo-thermal scatters and disappears, so that catalyst does not play a greater role, to influence the decomposition of VOCs.
Above embodiments only indicate the further explanation to the invention, do not represent institute's protection scope of the present invention, other people
It is improved according to the non-intrinsically safe that the present invention makes, still belongs to protection scope of the present invention.
Claims (8)
1. a kind of ultraviolet catalytic oxidation method for handling VOCs, which is characterized in that the method is to utilize ultraviolet catalytic oxygen
Change to handle VOCs.
2. a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs, which is characterized in that the net cover device control cell packet
Fluorescent tube is included, the fluorescent tube is UV, visible light light pipe, and UV, visible light light pipe periphery is provided with external catalyst net cover, the outside
Catalysis net, which is put on, is coated with catalyst, and the catalyst is metal oxide.
3. a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs according to claim 2, which is characterized in that described
Metal oxide includes TiO2And transition metal oxide, the transition metal oxide include Ni, Fe, Co, Cu, Zn, Ce and
At least one of Mn.
4. a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs according to claim 3, which is characterized in that described
Metal oxide is applied to the internal or external middle at least one side of external catalyst net cover.
5. a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs according to claim 4, which is characterized in that described
Ultraviolet lamp is dual wavelength ultraviolet line lamp in UV, visible light light pipe, and power 130-160w, fluorescent tube length is 1700-2000mm, is produced
The ultraviolet light that raw wavelength is 253.7nm.
6. a kind of ultraviolet catalytic oxidation net cover equipment for handling VOCs according to claim 5, which is characterized in that described
External catalyst net cover is connect with the UV, visible light light pipe by the fixation bracket of 10~50cm, the shape of the UV, visible light light pipe
Shape is cylindrical body, cube, cuboid or multiedge cylinder or cleat stanchion, the shape of the external catalyst net cover be cylindrical body, cube
Body, cuboid, multiedge cylinder or cleat stanchion.
7. a kind of ultraviolet catalytic oxidation net cover equipment of processing VOCs, feature according to claim 2,3,4 or 5 exist
In the net cover equipment includes at least one net cover device control cell, external described in the net cover device control cell to urge
Change net cover shape and described ultraviolet-visible tube shape any combination.
8. a kind of ultraviolet catalytic oxidation method for handling VOCs, which is characterized in that include the following steps realization:
Net cover equipment, the VOCs pollution are aoxidized using in claims 2~7 described in any item processing VOCs ultraviolet catalytics
Object air-flow aoxidizes net cover equipment by the ultraviolet catalytic, and the ultraviolet lamp of the ultraviolet catalytic oxidation net cover equipment center can issue
The ultraviolet light of the wavelength, the ultraviolet light of the wavelength make to be connected to the outer of ultraviolet catalytic oxidation net cover equipment by fixed bracket
Side catalysis net covers upper catalyst and electron transition occurs, and it is extremely strong to leave oxidisability from empty conduction band is transitted to full of valence band for electronics
Positively charged hole, be adsorbed at this time catalyst particle surface ozone trapped electron formed superoxide anion, and hole will
It is adsorbed on the water oxygen chemical conversion hydroxyl free radical of catalyst surface, superoxide anion and hydroxyl free radical are by oxidation operation at CO2
And H2O；The ultraviolet light of 253.7nm wavelength can make the ozone in air-flow become negative oxygen ion simultaneously, accelerate the decomposition of VOCs.
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| CN110993636A (en) * | 2019-10-21 | 2020-04-10 | 佛山市国星半导体技术有限公司 | Method and system for transferring micro LED chips in large quantity |
| CN114543353A (en) * | 2022-04-02 | 2022-05-27 | 云森威尔智能环境（深圳）有限公司 | Air conditioner with self-cleaning function |
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