CN103657359B - A kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode - Google Patents
A kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode Download PDFInfo
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- CN103657359B CN103657359B CN201310672736.9A CN201310672736A CN103657359B CN 103657359 B CN103657359 B CN 103657359B CN 201310672736 A CN201310672736 A CN 201310672736A CN 103657359 B CN103657359 B CN 103657359B
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Abstract
The present invention relates to a kind of gas discharge technology, relate to a kind of gas discharge low-temp plasma source, be related specifically to a kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode.Reactor is arranged on the center in airduct, this plasma reactor comprises plasma swivel nozzle, high-pressure rotary wire connecting portion, swivel joint and high pressure admission mouth, plasma swivel nozzle is arranged on rotating metallic pipe, high voltage source is connected to the anode of plasma swivel nozzle by high-pressure rotary wire connecting portion, the negative electrode of plasma swivel nozzle is rotating metallic, and gases at high pressure are by swivel joint access plasma swivel nozzle.Low temperature plasma gas and the mixing uniformity processing waste gas can be improved; The clearance of organic exhaust gas can be improved, reduce the cost of process waste gas.
Description
Technical field
The present invention relates to a kind of gas discharge technology, relate to a kind of gas discharge low-temp plasma source, be related specifically to a kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode.
Background technology
dry gas is good insulating body, but when there is free strip electron ion in gas, it just becomes charged.At this moment, if settle two electrodes and add voltage in gas, just have electric current by gas, this phenomenon just becomes gas discharge.Under the effect of electric field, when charged particle moves in gas, move along power line direction on the one hand, continuous acquisition energy, one side and gas molecule collision, do random warm-up movement, continuous off-energy, accelerates collision rift through several times, makes them reach movement at the uniform velocity state.
Low temperature plasma is the 4th state of material after solid-state, liquid and gaseous state, and when applied voltage reaches the firing voltage of gas, gas molecule is breakdown, produces the mixture low temperature plasma comprising electronics, various ion, atom and free radical.Although electron temperature is very high in discharge process, heavy particle temperature is very low, and whole system is low-temperature condition, so be called low temperature plasma.Present this low temperature plasma is more and more for degradation of contaminant, what it utilized is pollutant effect in these high energy electrons, free radical isoreactivity particle and waste gas, contaminant molecule is decomposed within the extremely short time, and there are follow-up various reactions, to reach the object of degradation of contaminant.But also do not utilize this technology preferably at present, make the ability of degradation of contaminant improve further, mainly pending waste gas can not mix with plasma gas preferably, and therefore, we must make an effort in this respect.
Summary of the invention
The present invention, just based on above technical problem, provides structure simple, can improve low temperature plasma gas and the mixing uniformity of process waste gas, can reduce a kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode of process waste gas cost.
Technical scheme of the present invention is:
A kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode, this reactor is arranged on the center in airduct, it comprises plasma swivel nozzle, high-pressure rotary wire connecting portion, swivel joint and high pressure admission mouth, plasma swivel nozzle is arranged on rotating metallic pipe, plasma swivel nozzle arranges negative electrode and anode, high voltage source is connected to the anode of plasma swivel nozzle by high-pressure rotary wire connecting portion, the negative electrode of plasma swivel nozzle is rotating metallic, the gases at high pressure entered from high pressure admission mouth access plasma swivel nozzle by swivel joint, thus the plasma gas of the ejection from this plasma reactor is mixed with process waste gas, thus improve the clearance of organic exhaust gas.
The number of described swivel nozzle is 2-8, and swivel nozzle also can adopt one, but a nozzle, easily cause shakiness, so generally do not select 1 this technical scheme of nozzle.
The center line of swivel nozzle and the distance of rotation centerline are L, L is 10-100mm, as preferably, selects L to be 50mm.
The radius of turn of swivel nozzle is R, R is 100-300mm, and as preferably, the radius of turn of swivel nozzle is 200mm.The fumarole diameter of swivel nozzle is 8mm.
Compared with prior art, beneficial effect of the present invention is:
(1) low temperature plasma gas and the mixing uniformity processing waste gas can be improved;
(2) clearance of organic exhaust gas can be improved, reduce the cost of process waste gas.
Accompanying drawing explanation
Fig. 1 is the tangent plane structural representation of the Atomospheric pressure glow discharge plasma reactor in the present invention with rotation electrode;
Fig. 2 is structural representation of the present invention;
Wherein, 1---swivel nozzle, 2---high-pressure rotary wire connecting portion, 3---swivel joint, 4---high pressure admission mouth.
Fig. 3 is the cross-sectional view of the deflection distance of nozzle centerline and rotation centerline in the present invention.
Wherein L is the center line of swivel nozzle and the distance of rotation centerline, and R is the radius of turn of swivel nozzle.
Fig. 4 swivel nozzle layout drawing
Wherein, 1---swivel nozzle, 5---airduct.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment.
A lot of short life and important active oxide material can be produced in plasma discharge process, as oxygen atom, positive oxygen ion and negative oxygen ion, swivel nozzle Main Function be make the active oxide material in plasma fast as far as possible and uniform with process waste gas and mix.In design swivel nozzle, the maximum radius of turn R of swivel nozzle and the center line of swivel nozzle and the distance L of rotation centerline determine the size of swivel nozzle, wherein R and L influences each other, and due to plasma nozzle structural design, R is at 100-300mm.
Embodiment 1:
There is the Atomospheric pressure glow discharge plasma reactor of rotation electrode, this reactor is arranged on the center in airduct, it comprises plasma swivel nozzle, high-pressure rotary wire connecting portion, swivel joint and high pressure admission mouth, plasma swivel nozzle is arranged on rotating metallic pipe, plasma swivel nozzle arranges negative electrode and anode, high voltage source is connected to the anode of plasma swivel nozzle by high-pressure rotary wire connecting portion, the negative electrode of plasma swivel nozzle is rotating metallic, the gases at high pressure entered from high pressure admission mouth access plasma swivel nozzle by swivel joint, in this reactor, each jet bore dia is 8mm, jet flow velocity is 30 meter per seconds, the jet amount of single plasma nozzle is: 5.5m
3/ hour, get L=50mm, R=100mm, the swivel nozzle of design four shower nozzles.Dust diameter gets 1200mm.The pivot of swivel nozzle is concentric with airduct, and the plasma gas of ejection is vertical with the flow direction of airduct; Process waste gas wind speed is at 0.17 meter per second.Plasma gas and process waste gas, the mixed proportion of two kinds of gas volumes is 1:30, and process organic exhaust gas continuously, clearance reaches 88%--95%.And under same treatment Parameter Conditions, without swivel nozzle, clearance is only 45%--60%.
Embodiment 2:
There is the Atomospheric pressure glow discharge plasma reactor of rotation electrode, this reactor is arranged on the center in airduct, it comprises plasma swivel nozzle, high-pressure rotary wire connecting portion, swivel joint and high pressure admission mouth, plasma swivel nozzle is arranged on rotating metallic pipe, plasma swivel nozzle arranges negative electrode and anode, high voltage source is connected to the anode of plasma swivel nozzle by high-pressure rotary wire connecting portion, the negative electrode of plasma swivel nozzle is rotating metallic, the gases at high pressure entered from high pressure admission mouth access plasma swivel nozzle by swivel joint, in this reactor, each jet bore dia is 8mm, jet flow velocity is 30 meter per seconds, the jet amount of single plasma nozzle is: 5.5m
3/ hour, get L=50mm, R=100mm, the swivel nozzle of design three shower nozzles.Dust diameter gets 1200mm.The pivot of swivel nozzle is concentric with airduct, and the plasma gas of ejection is vertical with the flow direction of airduct; Process waste gas wind speed is at 0.13 meter per second.Plasma gas and process waste gas, the mixed proportion of two kinds of gas volumes is 1:30, and process organic exhaust gas continuously, clearance reaches 85%--94%.And under same treatment Parameter Conditions, without swivel nozzle, clearance is only 45%--60%.
From the result of embodiment 1 and embodiment 2, the effect of plasma nozzle is adopted to be: can well make plasma gas mix with process waste gas, thus organic exhaust gas is well removed, in the process of traditional removal organic exhaust gas, owing to not adopting this plasma reactor, its clearance is poor.
Plasma nozzle is primarily of distribution part and electrion part composition, and due in distribution part and electrion part-structure, R is preferably comparatively suitable in the scope of 100-300mm.When R increases, the corresponding increase of pipeline of process gas, the rotary nozzle quantity of swivel nozzle also can increase.Jet bore dia is taken as 8mm, in the design, the size in aperture, jet hole, affect fumarole plasma gas ejection flow velocity, the source of the gas of swivel nozzle provides compressed air by air supply pipe, when air demand one timing, the gross area in jet hole is less, jet flow velocity is larger, and getting jet bore dia in design is 8mm, and the rotary nozzle quantity of swivel nozzle is taken as 2-8.The setting of the pore size in the size of R, the number of swivel nozzle and jet hole, restricts between several condition mutually.
After plasma generator energising, discharge current is relevant with discharge voltage, and jet flow velocity does not affect plasma discharge electric current, and when jet flow velocity is larger, the power consumption of unit plasma volume is less.
The principle of lower temperature plasma technology process pollutant is: under the effect of extra electric field, what medium discharge produced takes in a large number and can bombard contaminant molecule by electronics, make it ionize, dissociate and excite, then physics, the chemical reaction of series of complex has just been caused, complicated macromolecule contaminant is made to change simple Small molecular safe material into, or make poisonous and harmful substance be transformed into material that is nontoxic or the low evil of low toxicity, thus pollutant is degraded removal.Because the averaged electron energy produced after its ionization is at 10ev, the chemical reaction that suitably control reaction condition can realize generally being difficult to realize or speed is very slow becomes very quick.In environmental pollution treatment field, lower temperature plasma technology advantage in gaseous contaminant improvement is remarkable, the also increasing improvement for gaseous contaminant.
Claims (6)
1. one kind has the Atomospheric pressure glow discharge plasma reactor of rotation electrode, it is characterized in that: reactor is arranged on the center in airduct, this plasma reactor comprises plasma swivel nozzle, high-pressure rotary wire connecting portion, swivel joint and high pressure admission mouth, plasma swivel nozzle is arranged on rotating metallic pipe, high voltage source is connected to the anode of plasma swivel nozzle by high-pressure rotary wire connecting portion, the negative electrode of plasma swivel nozzle is rotating metallic, gases at high pressure are by swivel joint access plasma swivel nozzle, the center line of swivel nozzle and the distance of rotation centerline are L, L is 10-100mm, the radius of turn of swivel nozzle is R, R is 100-300mm.
2. the Atomospheric pressure glow discharge plasma reactor with rotation electrode according to claim 1, is characterized in that: described swivel nozzle is low-temperature plasma nozzle.
3. the Atomospheric pressure glow discharge plasma reactor with rotation electrode according to claim 1, is characterized in that: the number of described swivel nozzle is 2-8.
4. the Atomospheric pressure glow discharge plasma reactor with rotation electrode according to claim 1, is characterized in that: the center line of swivel nozzle and the distance of rotation centerline are L, L is 50mm.
5. the Atomospheric pressure glow discharge plasma reactor with rotation electrode according to claim 1, is characterized in that: the radius of turn of swivel nozzle is R, R is 200mm.
6. according to the Atomospheric pressure glow discharge plasma reactor with rotation electrode according to claim 1 or claim 2, it is characterized in that: the fumarole diameter of described swivel nozzle is 8mm.
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| CN201310672736.9A CN103657359B (en) | 2013-12-12 | 2013-12-12 | A kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode |
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| CN110961646B (en) * | 2019-11-07 | 2023-08-04 | 深圳航科新材料有限公司 | Metal powder and method for producing the same |
| CN110973987B (en) * | 2019-12-27 | 2022-02-25 | 广东美的厨房电器制造有限公司 | Cooking apparatus |
| CN111230134B (en) * | 2020-03-10 | 2023-08-04 | 深圳航科新材料有限公司 | Multi-element alloy powder and rapid preparation method thereof |
| CN111331146B (en) * | 2020-03-10 | 2021-07-06 | 深圳航科新材料有限公司 | Graphene-coated superfine powder and preparation method thereof |
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| US5804149A (en) * | 1993-07-23 | 1998-09-08 | Hokushin Industries, Inc. | Gas-cleaning equipment and its use |
| CN101778525A (en) * | 2010-01-22 | 2010-07-14 | 芜湖荣事达塑胶有限责任公司 | Pneumatic rotary air plasma jet source |
| CN203264554U (en) * | 2013-05-06 | 2013-11-06 | 孙红梅 | Wind wheel electrode discharging device |
| CN203610023U (en) * | 2013-12-12 | 2014-05-28 | 四川环隆科技有限公司 | Atmospheric glow discharge plasma reactor with rotating electrodes |
-
2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5804149A (en) * | 1993-07-23 | 1998-09-08 | Hokushin Industries, Inc. | Gas-cleaning equipment and its use |
| CN101778525A (en) * | 2010-01-22 | 2010-07-14 | 芜湖荣事达塑胶有限责任公司 | Pneumatic rotary air plasma jet source |
| CN203264554U (en) * | 2013-05-06 | 2013-11-06 | 孙红梅 | Wind wheel electrode discharging device |
| CN203610023U (en) * | 2013-12-12 | 2014-05-28 | 四川环隆科技有限公司 | Atmospheric glow discharge plasma reactor with rotating electrodes |
Non-Patent Citations (1)
| Title |
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| 韩立民.低压气体放电.《等离子热处理》.天津大学出版社,1997,第21-31页. * |
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