CN108993141A - A kind of emission-control equipment - Google Patents

A kind of emission-control equipment Download PDF

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Publication number
CN108993141A
CN108993141A CN201811210813.8A CN201811210813A CN108993141A CN 108993141 A CN108993141 A CN 108993141A CN 201811210813 A CN201811210813 A CN 201811210813A CN 108993141 A CN108993141 A CN 108993141A
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CN
China
Prior art keywords
emission
control equipment
ultraviolet lamp
area
equipment according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811210813.8A
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Chinese (zh)
Inventor
王森在
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Huisheng Environmental Protection Technology Co Ltd
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Shenzhen Huisheng Environmental Protection Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to CN201811210813.8A priority Critical patent/CN108993141A/en
Publication of CN108993141A publication Critical patent/CN108993141A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8678Removing components of undefined structure
    • B01D53/8687Organic components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/80Type of catalytic reaction
    • B01D2255/802Photocatalytic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708Volatile organic compounds V.O.C.'s

Abstract

The invention discloses a kind of emission-control equipments, including shell, air inlet, preposition treatment region, redox area and gas outlet, shell one end is provided with air inlet, the other end is provided with gas outlet, is divided into preposition treatment region and redox area in shell, and preposition treatment region is provided with UV ultraviolet lamp pipe and photo-catalytic filtering screen, and preposition treatment region is divided into photodissociation area and photoelectric effect chain reaction area, emission-control equipment of the invention, with small in size, the advantages that energy conservation, good purification.

Description

A kind of emission-control equipment
Technical field
The present invention relates to refuse depot technical field of waste gas treatment, and in particular to a kind of emission-control equipment.
Background technique
Garbage transfer station usually stacks a large amount of house refuse and industrial refuse, these rubbish can generate a large amount of exhaust gas, These exhaust gas are evaporate into air, and not only the smell is awful, and portion is toxic and harmful gas, these toxic and harmful gas Main component be volatile organic compounds (Volatileo anieeompounds, VOCs), such as aromatic hydrocarbon, halogenated hydrocarbons, contain The rivers such as oxygen hydrocarbon can be further divided into 8 classes: alkanes, aromatic hydrocarbons, alkenes, halohydrocarbon, aldehyde by volatile organic compounds chemical structure Class, ketone and other compounds, these VOCs can not only pollute air, but also can be detrimental to health, and some of which is even With carcinogenic, teratogenesis, mutagenesis, wherein at least there are ten several to be put into US Gov Env Protection Agency and country of China ring The priority monitoring substance register that border protects general bureau to determine.
The existing exhaust gas treatment technology for refuse depot common are condensation method, absorption method and Production by Catalytic Combustion Process, wherein Condensation method is the temperature by reducing saturation VOCs gas, is separated from gas after condensing VOCs foul gas.But condensation method It generally requires and adsorbs, burn and other waste gas purification processing means are used in combination, to recycle valuable gas.Absorption method point For rubbish waste gas processing methods such as physisorphtion, dipping adsorbent absorption methods.Using absorption method, waste gas treatment equipment volume Greatly, process is complicated, and when having micelle substance or other impurities in rubbish exhaust gas, adsorbent is vulnerable, and exhaust-gas treatment is not thorough.It urges Changing combustion method is to make 300~450 DEG C of oxygenolysis of pernicious gas temperature using catalyst, to save fuel, but is catalyzed burning The shortcomings that method is that oxygenolysis temperature is higher, and high temperature causes pipeline, equipment to be easily broken, and in addition catalyst price is higher, And it requires in exhaust gas without the ingredient for leading to catalyst inactivation.
In addition, in the prior art, application No. is 201721894779.1 utility model, to disclose a kind of integral type compound Photocatalysis plasma off-gas cleaning equipment needs multiple groups quartz burner, and disadvantage is that occupied space is big, and power consumption is big, simultaneously Due to there was only light-catalysed effect, energy conversion efficiency is low.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of can be used alone, structurally reasonable, net Change that effect is good, a kind of emission-control equipment with long service life.
To achieve the above object, the invention provides the following technical scheme:
A kind of emission-control equipment, including shell, shell one end are provided with air inlet, and the other end is provided with gas outlet, shell It is divided into preposition treatment region and redox area in vivo;Preposition treatment region one end is close to air inlet, the other end and redox area One end is adjacent, and for the other end in redox area close to gas outlet, preposition treatment region is provided with UV ultraviolet lamp pipe;UV ultraviolet lamp The partial denudation close to air inlet is managed, for generating ozone;UV ultraviolet lamp pipe is partially covered at least one far from air inlet Layer photo-catalytic filtering screen, photo-catalytic filtering screen are made of filter screen and the photocatalyst being applied on filter screen;The setting of redox area There is oxidation reduction catalyst.
Further, photocatalyst is one kind of nano-titanium dioxide, nano zine oxide, nano cupric oxide and nano phase ag_2 o Or it is a variety of, photo-catalytic filtering screen covers on UV ultraviolet lamp pipe circumferencial direction for part, and redox area is equipped at least one Porous catalyst block, oxidation reduction catalyst are applied on catalyst block.
Further, photo-catalytic filtering screen is two layers or three layers.
Further, UV ultraviolet lamp pipe accounts for UV ultraviolet lamp by the length of photo-catalytic filtering screen covering part in the axial direction It is ultraviolet by photo-catalytic filtering screen overlay length to account for UV on the circumference of UV ultraviolet lamp pipe by the 60%-80% of the axial upper total length of pipe The 60%-80% of line tube circumference total length.
Further, the material of catalyst block is activated carbon, cordierite or mullite, and oxidation reduction catalyst is mainly transition Metal.
Further, transition metal is platinum, palladium, copper, two or more in manganese.
Further, oxidation reduction catalyst further includes di-iron trioxide.
Further, oxidation reduction catalyst further includes copper oxide, manganese oxide and zinc oxide, and three's mass ratio is 1:8:1.
Further, redox area is additionally provided with multiple activated alumina beads, and activated alumina bead surface is also coated with Reductant-oxidant.
Further, it is equipped with fan at air inlet and air outlet at least one, is equipped with dustproof filter screen at air inlet.
Further, preposition treatment region and redox area are serial setting or parallel setting, parallel when setting, preposition place Managing has partition among area and redox area.
It compared with prior art, can be with the beneficial effects of the present invention are: having the advantages that small in size, low energy consumption, the service life is long Effectively emission-control equipment reaction temperature is excessively high in the prior art for solution, and energy consumption is excessively high, the exceeded problem of ozone, while can be more Thoroughly toxic and harmful gas is aoxidized, the final product of generation such as hydrogen peroxide, negative oxygen ion O2- and hydroxyl can be with As purification factor, the environment in or around garbage transfer station station can be improved.
Detailed description of the invention
Fig. 1 is that a kind of emission-control equipment of first embodiment of the invention opens the top view after cover board.
Fig. 2 is that a kind of emission-control equipment of first embodiment of the invention opens the perspective view after cover board.
Fig. 3 is the left view enlarged drawing for covering the UV ultraviolet lamp pipe of photo-catalytic filtering screen in Fig. 1 at M.
Fig. 4 is that a kind of emission-control equipment of second embodiment of the invention opens the top view after cover board.
Fig. 5 is that a kind of emission-control equipment of second embodiment of the invention opens the perspective view after cover board.
Wherein: air inlet 1, preposition treatment region 2, photodissociation area 21, photoelectric effect chain reaction area 22, UV ultraviolet lamp pipe 23, photo-catalytic filtering screen 24, redox area 3, catalyst block 31, gas outlet 4, fan 5, fan 6, cover board 7, partition 8.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of emission-control equipment, including shell, shell is by cover board 7 and holds The composition of portion 9 is set, air inlet 1 (being used as exhaust gas inlet port), preposition treatment region 2, redox area 3 are disposed in shell and is gone out Port 4 (is used as outlet port), and preposition treatment region is provided with UV ultraviolet lamp pipe 23, and UV ultraviolet lamp pipe 23 is close to air inlet 1 partial denudation, for generating ozone;UV ultraviolet lamp pipe 23 is partially covered with photo-catalytic filtering screen 24 far from air inlet 1, Photo-catalytic filtering screen 24 is made of filter screen and the photocatalyst that is applied on filter screen, and photocatalyst is used as photochemical catalyst, and mistake Strainer is used as the carrier of photocatalyst;Redox area 3 is provided with oxidation reduction catalyst.
Wherein, UV ultraviolet lamp pipe 23 can be one, or multiple (being not shown in Fig. 1~3), to adapt to difference Waste gas purification scene requirement, a UV ultraviolet lamp pipe, discharge amount of exhaust gas is used only in such as the lesser place of discharge amount of exhaust gas Biggish place uses 2 or 2 or more UV ultraviolet lamp pipes.
Oxygen atom is generated since the energy of the ultraviolet light less than 240nm can just dissociate oxygen molecule, oxygen atom is again and oxygen Molecule, which combines, generates ozone, therefore the luminescence spectrum of UV ultraviolet lamp pipe 23 is less than 240nm, for example, UV ultraviolet lamp pipe 23 can be with For the UV ultraviolet lamp pipe of 185nm.
Wherein, the part for the UV ultraviolet lamp pipe 23 not covered by photo-catalytic filtering screen 24 forms photodissociation area 21, and UV is ultraviolet Part and photo-catalytic filtering screen 24 of the line fluorescent tube 23 far from air inlet collectively form photoelectric effect chain reaction area.
In photodissociation area 21, the photon in UV ultraviolet beam generated by UV ultraviolet lamp pipe 23 decomposes the oxygen in air Molecule generates free oxygen, and positron-electron imbalance entrained by free oxygen need to be in conjunction with oxygen molecule, and then generates ozone;Meanwhile UV UV photons energy with the molecular link of cracking section VOCS (volatile organic compounds) or can make part VOCS (volatility has Machine compound) molecular binding loose, be oxidized easily it.In photodissociation area 21, part ozone can be reacted with part VOCS, CO2 and water are generated, i.e., in photodissociation area, part VOCS is decomposed, so that stink is desalinated.
Photo-catalytic filtering screen 24 is made of filter screen and the photocatalyst being applied on filter screen, and photocatalyst is coated on filter screen It is for the contact area of photocatalyst and UV ultraviolet beam, to more preferably realize the photocatalysis efficiency of photocatalyst.
Photocatalyst can be one in nano-titanium dioxide, nano zine oxide, nano cupric oxide and nano phase ag_2 o etc. Kind is a variety of;Wherein, nano-titanium dioxide has many advantages, such as that oxidability is strong, chemical property stablize it is nontoxic, as photochemical catalyst It is widely used;Nano zine oxide has price low, and the higher advantage of photocatalytic activity is that level of application is only second to nano-silica Change the photochemical catalyst of titanium;In addition, the forbidden bandwidth of nano zine oxide, nano-titanium dioxide, nano phase ag_2 o and nano cupric oxide Successively reduce, it is different since the forbidden bandwidth of every kind of photocatalyst varies when using above-mentioned a variety of photocatalysts, relatively For single photocatalyst, photocatalysis performance is more preferable.
In photoelectric effect chain reaction area 22, the photocatalyst being coated on photo-catalytic filtering screen 24 shines by UV ultraviolet lamp Shell intracorporal hydrone is excited into the hydroxyl free radical of great oxidability, and it is active to convert the oxygen to chemical property when penetrating Negative oxygen ion O2-, also, generate negative oxygen ion O2- outer-shell electron movement, constantly collision in other words attack VOCS in Macromolecular, the macromolecular in VOCS, which is collided or attacked, becomes small molecule, while the outer-shell electron of negative oxygen ion O2- is to VOCS The molecular link of (volatile organic compounds) is bombarded, so that the molecular link for the VOCS not being degraded in photodissociation area is looser Change, makes it easier to be oxidized.
Tail end in photoelectric effect chain reaction area 22, is provided with redox area 3, and redox area 3 includes at least one A to have porous catalyst block, oxidation reduction catalyst is applied to the surface (comprising hole surface) of catalyst block, and the effect of catalyst block is The carrier of oxidation reduction catalyst, to increase the surface area of catalyst or equal to the dosage for increasing catalyst, with more preferable Ground promotes redox reaction, aoxidizes additionally, due to by the fuel gas in exhaust gas, and the heat of generation is present in catalyst block, further Accelerate oxidation course.
Wherein, photo-catalytic filtering screen 24 can be one layer, or multilayer, for example, photo-catalytic filtering screen 24 be two layers or Three layers, compared with one of for layer, the surface area of two layers or three layers of photo-catalytic filtering screen 24 is bigger, can receive more UV ultraviolet lights The light beam that fluorescent tube 23 issues, so that photocatalysis efficiency is more preferable.
Photo-catalytic filtering screen 24 can be completely covered on the circumference of UV ultraviolet lamp pipe 23, can also partially cover.Portion When dividing covering, i.e., the UV ultraviolet lamp part not covered by photo-catalytic filtering screen 24 in photoelectric effect chain reaction area 22, with light The effect for solving the UV ultraviolet lamp part at area 21 is identical, can continue to generate ozone, can be for oxidation also compared with being completely covered Former area provides more sufficient ozone.Fig. 3 shows photo-catalytic filtering screen 24 (two layers) on the circumference of UV ultraviolet lamp pipe 23 The case where not being completely covered, it is preferable that the overlay length A on the circumference of UV ultraviolet lamp pipe 23 of photo-catalytic filtering screen 24 accounts for UV purple The 60%-80% of 23 circumference total length (A+B) of outside line fluorescent tube.
Preferably, the overlay length in the axial direction of UV ultraviolet lamp pipe 23 of photo-catalytic filtering screen 24 accounts for UV ultraviolet lamp pipe 23 The 60%-80% of length, in this way, UV ultraviolet lamp pipe 23 completely uncovered 20%~40% is located at photodissociation area, it is such Coating ratio effect is preferable.
Wherein, the material of catalyst block can be activated carbon, but due to activated carbon chemical property wave more living, easily with oxidation Reducing agent reaction, can be replaced, effect is more preferable with the cordierite of stable chemical performance or mullite.
Point in redox area 3, in the active ozone of chemical property, negative oxygen ion O2- and hydroxyl free radical and exhaust gas The loose VOCS (volatile organic compounds) of sub (most of is small molecule) and bond is catalyzed in oxidation reduction catalyst etc. Lower carry out redox reaction generates oxygen, carbon dioxide, oxyhydroxide (such as water, hydrogen peroxide etc.), oxide (example Such as sulfur dioxide), ozone, negative oxygen ion O2- etc., corresponding space is discharged to by gas outlet 4, hydrogen peroxide therein, Negative oxygen ion O2- and hydroxyl can be used as purification factor, further improve the environment in or around garbage transfer station station.
Wherein, oxidation reduction catalyst can be any two or the two or more transition in platinum, palladium, copper, manganese etc. Metal can further decrease oxidation also using two or more transition metal compared to a kind of transition metal is only used The reflecting point of original reaction, so that the temperature for controlling redox area 3 is not too high.
For the sulfide (hydrogen sulfide, methyl mercaptan etc.) gone in removing exhaust gas, oxidation reduction catalyst further includes three oxidations two Iron.
Particularly, in order to reduce the ozone of the discharge of gas outlet 4 and the content of hydrogen peroxide, oxidation reduction catalyst further includes Copper oxide, manganese oxide and zinc oxide, it is preferable that copper oxide, manganese oxide, zinc oxide three's mass ratio are 1:8:1.By using oxygen Change copper, manganese oxide and zinc oxide, it is completely harmless to human body by ozone, hydrogen-peroxide reduction at oxygen and water.
Preferably, redox area 3 is additionally provided with multiple activated alumina bead (not shown)s, activated alumina bead Surface is coated with reductant-oxidant, carrier of the alumina globule as reductant-oxidant, has a large specific surface area, high mechanical strength, The advantages such as price is low, can further increase exhaust gas in the extent of reaction in redox area 3, reach better clean-up effect.
Preferably, be provided at air inlet 1 at fan 5 or gas outlet 4 and be provided with fan 6, alternatively, at air inlet 1, outlet Fan 5, fan 6 are respectively arranged at mouth 4, fan 5 is arranged then for being evacuated in air inlet 1, and exhaust gas is easier to be collected at exhaust gas It manages in device, fan 6 is arranged for being vented in air inlet 4, and gas after treatment is easier to be discharged into air by fan 6 In.
Preferably, be additionally provided with dustproof filter screen (not shown) at air inlet 1, for obstruct dust in exhaust gas or other Biggish solid particle, to prevent in exhaust gas dust or other biggish solid particles fall in UV ultraviolet lamp tube or other component On, influence exhaust-gas treatment effect.
Embodiment 2:
Please refer to Fig. 4~5, the embodiment of the present invention on the basis of embodiment 1, to a kind of emission-control equipment in setting Changed, specifically, in embodiment 1, a kind of preposition treatment region 2 of emission-control equipment and redox area 3 are serial Setting, and in embodiment 2, a kind of preposition treatment region 2 of emission-control equipment and redox area 3 are parallel setting, embodiment 2 In, there is partition 8, for distinguishing preposition treatment region 2 and redox area 3 among preposition treatment region 2 and redox area 3 Come, compared with Example 1, a kind of emission-control equipment length of embodiment 2 is shorter, and width is wider, is applicable to need shorter The occasion of wider emission-control equipment.
Emission-control equipment of the invention generates ozone by photodissociation area, photoelectric effect chain reaction area mainly generates hydrogen Oxygen radical and negative oxygen ion O2-, and above-mentioned ozone, hydroxyl free radical and negative oxygen ion O2- mainly redox area with Exhaust gas (predominantly VOCs) occur redox reaction, it is progressive, it is all linked with one another, reduce emission-control equipment volume, The cost for reducing emission-control equipment is low, while achieving the purpose that preferably waste gas decomposition, realization air cleaning.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (11)

1. a kind of emission-control equipment, including shell, shell one end is provided with air inlet, and the other end is provided with gas outlet, shell Inside it is divided into preposition treatment region and redox area;Described preposition treatment region one end is close to air inlet, and the other end and the oxidation are also The one end in former area is adjacent, and for the other end in the redox area close to gas outlet, the preposition treatment region is provided with UV ultraviolet light Fluorescent tube;The UV ultraviolet lamp pipe close to air inlet partial denudation, for generating ozone;The UV ultraviolet lamp pipe far from into Port is partially covered at least one layer of photo-catalytic filtering screen, and the photo-catalytic filtering screen is by filter screen and is applied on filter screen Photocatalyst is constituted;The redox area is provided with oxidation reduction catalyst.
2. emission-control equipment according to claim 1, which is characterized in that the photocatalyst is nano-titanium dioxide, receives Rice zinc oxide, nano cupric oxide and nano phase ag_2 o it is one or more, the photo-catalytic filtering screen is in the UV ultraviolet lamp It is covered on pipe circumferencial direction for part, the redox area is equipped at least one porous catalyst block, the redox catalysis Agent is applied on the catalyst block.
3. emission-control equipment according to claim 2, which is characterized in that the photo-catalytic filtering screen is two layers or three Layer.
4. emission-control equipment according to any one of claims 1 to 3, which is characterized in that the UV ultraviolet lamp pipe quilt The length of photo-catalytic filtering screen covering part in the axial direction accounts for the 60%- of the UV ultraviolet lamp pipe axial overall length 80%, the UV ultraviolet lamp pipe circumference is accounted for by the photo-catalytic filtering screen overlay length on the circumference of the UV ultraviolet lamp pipe The 60%-80% of total length.
5. emission-control equipment according to claim 2 or 3, which is characterized in that the material of the catalyst block be activated carbon, Cordierite or mullite, the oxidation reduction catalyst are mainly transition metal.
6. emission-control equipment according to claim 5, which is characterized in that the transition metal is platinum, palladium, copper, manganese In two or more.
7. emission-control equipment according to claim 5, which is characterized in that the oxidation reduction catalyst further includes three oxygen Change two iron.
8. emission-control equipment according to claim 6, which is characterized in that the oxidation reduction catalyst further includes oxidation Copper, manganese oxide and zinc oxide, three's mass ratio are 1:8:1.
9. emission-control equipment according to any one of claims 2 to 3, which is characterized in that the redox area is also set There are multiple activated alumina beads, the activated alumina bead surface is also coated with the reductant-oxidant.
10. emission-control equipment according to claim 4, which is characterized in that the air inlet and the gas outlet are at least It is equipped with fan at one, is equipped with dustproof filter screen at the air inlet.
11. emission-control equipment according to any one of claims 1 to 3, which is characterized in that the preposition treatment region and institute Redox area is stated for serial setting or parallel setting, parallel when setting, in the preposition treatment region and the redox area Between have partition.
CN201811210813.8A 2018-10-17 2018-10-17 A kind of emission-control equipment Pending CN108993141A (en)

Priority Applications (1)

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CN201811210813.8A CN108993141A (en) 2018-10-17 2018-10-17 A kind of emission-control equipment

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Application Number Priority Date Filing Date Title
CN201811210813.8A CN108993141A (en) 2018-10-17 2018-10-17 A kind of emission-control equipment

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CN108993141A true CN108993141A (en) 2018-12-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109821408A (en) * 2019-03-12 2019-05-31 上海第二工业大学 A kind of device and method of ozone-catalysis oxidation collaboration processing volatile organic matter
GB2593603A (en) * 2021-04-15 2021-09-29 Filter8 Ltd Air purification

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109821408A (en) * 2019-03-12 2019-05-31 上海第二工业大学 A kind of device and method of ozone-catalysis oxidation collaboration processing volatile organic matter
CN109821408B (en) * 2019-03-12 2021-10-19 上海第二工业大学 Device and method for cooperatively treating volatile organic compounds through ozone-catalytic oxidation
GB2593603A (en) * 2021-04-15 2021-09-29 Filter8 Ltd Air purification
GB2593603B (en) * 2021-04-15 2022-06-01 Filter8 Ltd Air purification

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