CN207237698U - A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas - Google Patents
A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas Download PDFInfo
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- CN207237698U CN207237698U CN201720309374.0U CN201720309374U CN207237698U CN 207237698 U CN207237698 U CN 207237698U CN 201720309374 U CN201720309374 U CN 201720309374U CN 207237698 U CN207237698 U CN 207237698U
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Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas,Including housing,Insulating layer,The insulating layer is fixed on hull outside,Several plasma discharge cells are equipped with the housing,Air inlet,Gas outlet,Dust removal by filtration unit,The plasma discharge cells include two stainless-steel sheets,Described two stainless-steel sheets are located at the both ends of plasma discharge cells,The dust removal by filtration unit is between air inlet and plasma discharge cells,The air inlet is connected with one end of dust removal by filtration unit,The other end of the dust removal by filtration unit is connected by several plasma discharge cells with gas outlet,The utility model is by plasma,Photocatalysis and suction-operated organically combine,Realize that the thorough of organic exhaust gas is decomposed and innoxious,Plasma and photocatalysis can mutually promote,Synergistic effect,Effect protrudes.
Description
Technical field
Emission-control equipment technical field is the utility model is related to, more particularly to a kind of plasma body cooperative ultraviolet catalytic
The reactor of cleaning organic waste gas.
Background technology
Organic exhaust gas particularly volatile organic matter VOCs, is one of important air pollution source, is a kind of to mankind's body
The great material of body health hazard.Most VOCs has toxicity, carcinogenicity and special smell, can influence skin and stick
Film, acute lesion is produced to human body, or even many VOCs have been identified it is carcinogenic substance, such as formaldehyde, polycyclic aromatic hydrocarbon, aromatic amine
Deng.VOCs can also react to form photochemical fog with Hydrocarbon Compounds in Ambient Air and NOx mostly, cause secondary pollution.Partial
The VOCs of halogenated hydrocarbon, the destruction of ozone layer is will also cause into higher air layers.Research and develop efficient VOCs treatment
Device has the active demand of reality and great application value.
In VOCs field of purification, compared to traditional absorption method, absorption process, condensation method, combustion method, bioanalysis, new work
Skill and method are also continuously emerging.Lower temperature plasma technology is short, efficient, applied widely etc. with its process flow in recent years
Feature, causes the high attention of people.But lower temperature plasma technology itself is there are many shortcomings, such as its energy
Inefficient, selective bad and easy the defects of producing CO and ozone etc., limit the industrial applications of the technology.
Ultraviolet catalytic technology, as the emerging technology of catalytic field, it has, and energy consumption is low, accessory substance is few, reaction condition is gentle, process
Simply, the advantages that easy to operate, be a kind of environmentally friendly catalytic reaction process, the application in terms of environmental pollution improvement is increasingly
Extensively.And single photocatalysis technology also faces that reactor is limited by ultraviolet source, treatment effeciency is not high, capacity usage ratio
It is low, photocatalysis performance is low, murder by poisoning of the water vapour to catalyst catalytic performance, the inactivation of photochemical catalyst, the generation of harmful by-products,
The shortcomings of being difficult to handle high concentration Wind Volume gas.For this reason, plasma technique and photocatalyst technology are organically combined, overcome
The defects of monotechnics, exploitation reaction speed is fast, and the organic waste-gas purification technology of high treating effect, can carry for organic waste-gas purification
For new approaches and methods.
Utility model content
The purpose of the utility model is to overcome the shortcomings of the prior art, there is provided a kind of plasma body cooperative ultraviolet light is urged
Change the reactor of cleaning organic waste gas.
To achieve the above object, the utility model provides following technical solution：
A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas, including housing, insulating layer, it is described exhausted
Edge layer is fixed on hull outside, is filtered out in the housing equipped with several plasma discharge cells, air inlet, gas outlet, mistake
Dirt unit, the plasma discharge cells include two stainless-steel sheets, and described two stainless-steel sheets are located at plasma
The both ends of discharge cell, the dust removal by filtration unit between air inlet and plasma discharge cells, the air inlet with
One end of dust removal by filtration unit is connected, the other end of the dust removal by filtration unit by several plasma discharge cells with
Gas outlet is connected, the stainless-steel sheet connection ground in two stainless-steel sheets, another in described two stainless-steel sheets
One stainless-steel sheet connects high-voltage electricity, and described two stainless-steel sheets are designed with several through holes, the plasma discharge
Photochemical catalyst is filled with unit, the two neighboring plasma discharge cells share a stainless-steel sheet, the housing
It is 200mm~500mm that inner surface, which uses the distance between reflecting material, described two stainless-steel sheets,.Reactor cross-section
Can be circular or square, corresponding dust removal by filtration unit, stainless-steel sheet, the shape of catalyst correspond to therewith.It is whole in order to reduce
The resistance of a reactor, dust removal by filtration unit are generally filtered using stainless (steel) wire, according to actual Dust Characteristics, select different-thickness
With the stainless (steel) wire in aperture.In addition, in the process of running, it is necessary to regularly replace stainless (steel) wire.
The photochemical catalyst filling mode is direct filling mode or indirect filling mode.
The directly filling mode refers to photocatalyst granular being placed directly in plasma discharge cells.For
The relatively low organic exhaust gas of dust concentration, is adapted to use direct filling mode.At this time, photochemical catalyst is supported on absorption using infusion process
On agent particle, photochemical catalyst can not only effectively adsorb organic exhaust gas, increase the concentration of reaction zone pollutant, greatly improve region of discharge
Interior plasma reaction efficiency and light-catalyzed reaction efficiency, and graininess photochemical catalyst specific surface area is big, catalytic reaction effect
More preferably.Adsorbent can be the non-carbon base adsorbents such as diatomite, molecular sieve or activated alumina.
The utility model further includes carrier, and photochemical catalyst and carrier the mixing compacting forms cellular packing layer, institute
State packing layer to be fixed in plasma discharge cells, the air-flow that described filler layer is provided with several perforations along airflow direction leads to
Road, it is indirect filling mode that photochemical catalyst and carrier the mixing compacting, which forms cellular packing layer,.For dust concentration compared with
High exhaust-gas treatment, the indirect filling mode of preferable packing layer.Packing layer is preferably cellular structure, by photochemical catalyst and load
Body mixing compacting forms.
Preferably, it is equipped with two plasma discharge cells in the housing.According to exhaust-gas treatment amount and treatment effeciency,
Changeable discharge cell.
The photochemical catalyst is Mn-TiO2Composite catalyst.Mn catalyst is low temperature catalyst, can decompose discharge process
The O of middle generation3, generate active O atom and be attached to catalyst surface, promote the degraded of organic exhaust gas at a lower temperature, by Mn-
TiO2Catalyst is compound, can greatly improve catalytic efficiency.
The aperture of the through hole is preferably 1~2mm, and the photocatalyst granular diameter is preferably 1.5~2.5mm.Through hole
The size in aperture can be adjusted according to actual conditions, it is therefore an objective to reduce gas-flow resistance as far as possible.While in order to ensure catalyst particles
Grain is preferably retained in region of discharge, and photocatalyst granular diameter is slightly larger than through-hole diameter.
The aperture of the through hole is preferably 1~2mm, and the gas channel diameter of the catalyst filling layer is preferably 1~
2mm, gas channel diameter are identical with through-hole aperture.Carrier is Al2O3、SiO2, one or more in zeolite.These types of carrier
All it is preferable organic waste-gas adsorbant, the organic matter after absorption can be decomposed removing in region of discharge and photocatalytic region.
Compared with prior art, the beneficial effects of the utility model are：
1st, plasma oxidation, photochemical catalytic oxidation and suction-operated are organically combined, realizes thoroughly dividing for organic exhaust gas
Solve and innoxious, plasma and photocatalysis can mutually promote, and synergistic effect, effect protrudes.
2nd, plasma discharge and photochemical catalyst are placed in a plasma discharge cells, according to exhaust-gas treatment need
Ask, plasma discharge cells changeable, directly filled in combination with catalyst granules, or supported catalyst packing layer not
Same filling mode, can meet different engineering demands.
3rd, gas channel both ends are positioned over as discharge electrode using porous stainless steel plate, can not only realize the equal of air-flow
Cloth, and the strong ultraviolet light that discharge process produces can be conducted effectively to catalyst surface, promotion electric discharge has with photochemical catalyst
Machine combines.Simultaneous reactions device overall structure is simple and practical, easy to the amplification application of industry.
4th, this utility model plasma and photocatalysis collaboration play a role, and photochemical catalyst can produce plasma process
Raw O3It is converted into O, OH strong oxidizer and is used for cleaning organic waste gas, while plasma can not only replaces ultraviolet light as light
The driving source of catalyst, and can overcome single Ultraviolet be catalyzed in the presence of structure of reactor, light source limitation, electronics and hole answer
Conjunction, treatment effeciency is not high, capacity usage ratio is low, photocatalysis performance is low, cannot handle high concentration, big flow exhaust gas, energy efficiency
The problem of low.
5th, the utility model is first passed through after dust removal by filtration unit removes particulate matter and carried out again by plasma discharge cells
Processing, whether dust or particle can be processed, and cleaning organic waste gas effect is good, and shell inner surface uses reflecting material
So that the ultraviolet light that plasma discharge processes produce is distributed more uniform strong in reactor, photocatalysis effect is more managed
Think, organic exhaust gas oxidation is more thorough.
Brief description of the drawings：
Fig. 1 is the structure diagram of embodiment 1；
Fig. 2 is the structure diagram of embodiment 2.
Embodiment
Embodiment one：
As shown in Figure 1, a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas, including housing 1, absolutely
Edge layer 2, the insulating layer 2 are fixed on outside housing 1, be equipped with the housing 1 two plasma discharge cells, air inlet 3,
Gas outlet 4, dust removal by filtration unit 8, a plasma discharge cells include stainless-steel sheet 51, stainless-steel sheet 52, another
A plasma discharge cells include stainless-steel sheet 52, stainless-steel sheet 53, and two plasma discharge cells share one
Stainless-steel sheet 52, stainless-steel sheet 52 connect high-voltage electricity, and stainless-steel sheet 51, stainless-steel sheet 53 all connect ground, the mistake
Filtering dust collecting unit 8 is between air inlet 3 and plasma discharge cells, one end of the air inlet 3 and dust removal by filtration unit 8
It is connected, the other end of the dust removal by filtration unit 8 is connected by two plasma discharge cells with gas outlet, and described three
A stainless-steel sheet is designed with several through holes, and photochemical catalyst 6 is filled with the plasma discharge cells.Photochemical catalyst is filled out
It is direct filling mode to fill mode, and the directly filling mode refers to that photocatalyst granular is placed directly in plasma puts
In electric unit, 1 inner surface of housing use the distance between reflecting material, described two stainless-steel sheets for 200mm~
500mm.The utility model further includes insulating layer 2, and the insulating layer 2 is fixed on hull outside.The photochemical catalyst 6 is Mn-
TiO2Composite catalyst.The aperture of the through hole is 1~2mm, vias rate 40~60%, the photocatalyst granular diameter
For 1.5~2.5mm.
Reactor cross section can be circular or square, and corresponding dust removal by filtration unit, stainless-steel sheet shape correspond to therewith.For
The resistance of the whole reactor of reduction, dust removal by filtration unit are generally filtered using stainless (steel) wire, according to actual Dust Characteristics, selection
Different-thickness and the stainless (steel) wire in aperture.In addition, in the process of running, it is necessary to regularly replace stainless (steel) wire.
The utility model is used to handle the organic exhaust gas for having environment and greatly polluting and be detrimental to health.Specifically
It is to utilize strong oxidizing property free radical such as OH, H, O, the HO produced in plasma discharge processes2By organic exhaust gas oxygen
Change, cooperative photocatalysis agent in addition, strengthen its oxidizing process, while photochemical catalyst also has stronger adsorption capacity, reduces organic
The aerosolized material produced during exhaust gas decomposition, so that organic exhaust gas is thoroughly purified.By plasma oxidation, light
Catalysis oxidation and suction-operated organically combine, and realize that the thorough of organic exhaust gas is decomposed and innoxious, plasma and photocatalysis
It can mutually promote, act synergistically, effect protrudes.
Gas channel both ends are positioned over as discharge electrode using porous stainless steel plate, can not only realize being evenly distributed with for air-flow,
And the strong ultraviolet light that discharge process produces can be conducted effectively to catalyst surface, promote organic knot of electric discharge and photochemical catalyst
Close.Simultaneous reactions device overall structure is simple and practical, easy to the amplification application of industry.Plasma and the collaboration of photocatalysis
In, photochemical catalyst can be by the O of plasma process generation3It is converted into O, OH strong oxidizer and is used for cleaning organic waste gas, while etc.
Gas ions can not only replace driving source of the ultraviolet light as photochemical catalyst, and single Ultraviolet can be overcome anti-in the presence of being catalyzed
Answer device structure, light source limitation, electronics and hole-recombination, treatment effeciency be not high, capacity usage ratio is low, photocatalysis performance is low, it is impossible to
Handle high concentration, big flow exhaust gas, the problem of energy efficiency is low.Porous stainless steel plate also acts as airflow uniform distribution effect.Two etc.
One stainless-steel sheet 52 of plasma discharge units shared, saves material, makes the simpler practicality of structure of reactor.
The photochemical catalyst is Mn-TiO2Composite catalyst, Mn catalyst are low temperature catalyst, can decompose discharge process
The O of middle generation3, generate active O atom and be attached to catalyst surface, promote the degraded of organic exhaust gas at normal temperatures, by Mn-TiO2
Catalyst is compound, can greatly improve catalytic efficiency.
For the relatively low organic exhaust gas of dust concentration, it is adapted to use direct filling mode.At this time, photochemical catalyst is using dipping
Method is supported on absorbent particles, and photochemical catalyst can not only effectively adsorb organic exhaust gas, increases the concentration of reaction zone pollutant, greatly
It is big to improve plasma reaction efficiency and light-catalyzed reaction efficiency in region of discharge, and graininess photochemical catalyst specific surface area is big,
Catalytic reaction effect is more preferable.Adsorbent is preferably diatomite.After the utility model first passes through dust removal by filtration unit removing particulate matter
Handled again by plasma discharge cells, whether dust or particle can be processed, cleaning organic waste gas
Effect is good, and shell inner surface causes the ultraviolet light that plasma discharge processes produce to be distributed in reactor using reflecting material
More uniform strong, photocatalysis effect is more preferable, and organic exhaust gas oxidation is more thorough.
Embodiment two：
As shown in Fig. 2, a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas, including housing 1, absolutely
Edge layer 2, the insulating layer 2 are fixed on outside housing 1, be equipped with the housing 1 plasma discharge cells, air inlet 3,
Gas outlet 4, plasma discharge cells include stainless-steel sheet 51, stainless-steel sheet 52, and stainless-steel sheet 52 connects high-voltage electricity,
Stainless-steel sheet 51 all connects ground, and the dust removal by filtration unit 8 is described between air inlet 3 and plasma discharge cells
Air inlet 3 is connected with one end of dust removal by filtration unit 8, and the other end of the dust removal by filtration unit 8 passes through two plasmas
Discharge cell is connected with gas outlet, and the stainless-steel sheet 51, stainless-steel sheet 52 are designed with several through holes, the grade from
Photochemical catalyst 6 is filled with daughter discharge cell.The utility model further includes carrier, photochemical catalyst and carrier the mixing compacting
Cellular packing layer 7 is formed, described filler layer 7 is fixed in plasma discharge cells, and described filler layer 7 is along air-flow side
To the gas channel for being provided with several perforations, photochemical catalyst and carrier the mixing compacting is formed between cellular packing layer 7 is
Connect filling mode.
The utility model further includes insulating layer 2, and the insulating layer 2 is fixed on hull outside.The photochemical catalyst 6 is Mn-
TiO2Composite catalyst, carrier Al2O3、SiO2, one or more in zeolite.The aperture of the through hole is 1~2mm, described
A diameter of 1~the 2mm of gas channel of catalyst filling layer 7.1 inner surface of housing uses reflecting material, it is described two not
The distance between the steel steel plate that becomes rusty is 200mm~500mm.
Plasma, photocatalysis and suction-operated are organically combined, realize that the thorough of organic exhaust gas is decomposed and innoxious,
Plasma and photocatalysis can mutually promote, and synergistic effect, effect protrudes.Plasma discharge and photochemical catalyst are placed in one
Plasma discharge cells, according to exhaust-gas treatment demand, plasma discharge cells changeable.It is straight in combination with catalyst granules
Filling, or the different filling modes of the packing layer of supported catalyst are connect, can meet different engineering demands.For dust concentration
Higher exhaust-gas treatment, the indirect filling mode of preferable packing layer 7.
Gas channel both ends are positioned over as discharge electrode using porous stainless steel plate, can not only realize being evenly distributed with for air-flow,
And the strong ultraviolet light that discharge process produces can be conducted effectively to catalyst surface, promote organic knot of electric discharge and photochemical catalyst
Close.Simultaneous reactions device overall structure is simple and practical, easy to the amplification application of industry.
In the collaboration of plasma and photocatalysis, photochemical catalyst can be by the O of plasma process generation3Be converted into O,
OH strong oxidizers are used for cleaning organic waste gas, while plasma can not only replace driving of the ultraviolet light as photochemical catalyst
Source, and can overcome single Ultraviolet be catalyzed in the presence of structure of reactor, light source limitation, electronics and hole-recombination, treatment effeciency
It is not high, capacity usage ratio is low, photocatalysis performance is low, high concentration, big flow exhaust gas cannot be handled, the problem of energy efficiency is low.
The utility model first pass through dust removal by filtration unit remove particulate matter after again by plasma discharge cells at
Reason, whether dust or particle can be processed, and the effect of cleaning organic waste gas is good, and shell inner surface uses reflex reflection material
It is more uniform strong that material causes the ultraviolet light that plasma discharge processes produce to be distributed in reactor, and photocatalysis effect is more
Ideal, organic exhaust gas oxidation are more thorough.
It should be noted that listed above is only a kind of specific embodiment of the utility model.Obviously, the utility model
Above example is not limited to, can also have in many deformations, such as housing and be equipped with several plasma discharge cells.In short,
Those of ordinary skill in the art directly can export or associate from the utility model disclosure its have deformation, should all recognize
To be the scope of protection of the utility model.
Claims (9)
1. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas, it is characterised in that including housing, insulation
Layer, the insulating layer are fixed on hull outside, several plasma discharge cells, air inlet, outlet are equipped with the housing
Mouth, dust removal by filtration unit, the plasma discharge cells include two stainless-steel sheets, and described two stainless-steel sheets are located at
The both ends of plasma discharge cells, the dust removal by filtration unit are described between air inlet and plasma discharge cells
Air inlet is connected with one end of dust removal by filtration unit, and the other end of the dust removal by filtration unit is put by several plasmas
Electric unit is connected with gas outlet, in described two stainless-steel sheets stainless-steel sheet connection ground, described two stainless
Another stainless-steel sheet connection high-voltage electricity in steel steel plate, described two stainless-steel sheets are designed with several through holes, described
Photochemical catalyst is filled with plasma discharge cells, adjacent described two plasma discharge cells share a stainless steel steel
Plate, it is 200mm~500mm that the shell inner surface, which uses the distance between reflecting material, described two stainless-steel sheets,.
2. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 1, its feature
It is, the photochemical catalyst filling mode is direct filling mode or indirect filling mode.
3. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 2, its feature
It is, the directly filling mode refers to photocatalyst granular being placed directly in plasma discharge cells.
4. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 2, its feature
It is, further include carrier, photochemical catalyst and carrier the mixing compacting forms cellular packing layer, and described filler layer is fixed on
In plasma discharge cells, described filler layer is provided with the gas channel of several perforations, the photocatalysis along airflow direction
It is indirect filling mode that agent and carrier mixing compacting, which form cellular packing layer,.
5. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 1, its feature
It is, two plasma discharge cells is equipped with the housing.
6. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 1, its feature
It is, the photochemical catalyst is Mn-TiO2Composite catalyst.
7. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 3, its feature
It is, the aperture of the through hole is 1~2mm, a diameter of 1.5~2.5mm of photocatalyst granular.
8. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 4, its feature
It is, the aperture of the through hole is 1~2mm, a diameter of 1~2mm of gas channel of described filler layer.
9. a kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas according to claim 4, its feature
It is, the carrier is Al2O3、SiO2, one or more in zeolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720309374.0U CN207237698U (en) | 2017-03-28 | 2017-03-28 | A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720309374.0U CN207237698U (en) | 2017-03-28 | 2017-03-28 | A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207237698U true CN207237698U (en) | 2018-04-17 |
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ID=61874809
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720309374.0U Expired - Fee Related CN207237698U (en) | 2017-03-28 | 2017-03-28 | A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890566A (en) * | 2017-03-28 | 2017-06-27 | 浙江旭达环保技术有限公司 | A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890566A (en) * | 2017-03-28 | 2017-06-27 | 浙江旭达环保技术有限公司 | A kind of reactor of plasma body cooperative ultraviolet catalytic cleaning organic waste gas |
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