CN103657359A - Atmospheric glow discharge plasma reactor with rotating electrode - Google Patents
Atmospheric glow discharge plasma reactor with rotating electrode Download PDFInfo
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- CN103657359A CN103657359A CN201310672736.9A CN201310672736A CN103657359A CN 103657359 A CN103657359 A CN 103657359A CN 201310672736 A CN201310672736 A CN 201310672736A CN 103657359 A CN103657359 A CN 103657359A
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Abstract
The invention relates to a gas discharge technology, relates to a gas discharge low-temperature plasma source and in particular relates to an atmospheric glow discharge plasma reactor with a rotating electrode. The reactor is arranged at the center in an air pipe. The plasma reactor comprises a plasma rotary nozzle, a high-voltage rotary wiring part, a rotary joint and a high-voltage gas inlet, wherein the plasma rotary nozzle is arranged on a rotary metal pipe; a high-voltage power supply is connected to a positive electrode of the plasma rotary nozzle through the high-voltage rotary wiring part; a positive electrode of the plasma rotary nozzle is a rotary metal; the high-pressure gas is fed into the plasma rotary nozzle through the rotary joint. The atmospheric glow discharge plasma reactor with the rotating electrode can improve the mixing uniformity of low-temperature plasma gas and treated waste gas, so that the removal rate of organic waste gas can be increased, and the cost for treating the waste gas is reduced.
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, specially refer to a kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode.
background technology
?dry gas is good insulating body, but while 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 to pass through gas, this phenomenon just becomes gas discharge.Under the effect of electric field, when charged particle moves in gas, along power line direction, move on the one hand, constantly obtain energy, one side and gas molecule collision, do random warm-up movement, constantly off-energy, after several times accelerate collision, makes them reach movement at the uniform velocity state.
Low temperature plasma is the 4th state of material after solid-state, liquid state and gaseous state, and when applied voltage reaches the firing voltage of gas, gas molecule is breakdown, produces the mixture low temperature plasma that comprises 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, its utilization be the 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, do not utilize preferably at present this technology yet, the ability of degradation of contaminant is further improved, be mainly that pending waste gas can not mix with plasma gas preferably, therefore, we must make an effort in this respect.
Summary of the invention
The present invention, just based on above technical problem, provides simple in structure, can improve low-temperature plasma gas and the mixing uniformity of processing waste gas, can reduce a kind of Atomospheric pressure glow discharge plasma reactor with rotation electrode of processing 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 that enter from high pressure admission mouth access plasma swivel nozzle by swivel joint, thereby the plasma gas of the ejection from this plasma reactor is mixed with processing waste gas, thereby 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 causes 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, and L is 10-100mm, and as preferably, selecting L is 50mm.
The radius of turn of swivel nozzle is R, and 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) can improve low-temperature plasma gas and the mixing uniformity of processing waste gas;
(2) can improve the clearance of organic exhaust gas, reduce the cost of processing waste gas.
Accompanying drawing explanation
Fig. 1 is the tangent plane structural representation in the present invention with the Atomospheric pressure glow discharge plasma reactor of 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.
The center line that wherein L is swivel nozzle and the distance of rotation centerline, the radius of turn that R is swivel nozzle.
Fig. 4 swivel nozzle layout drawing
Wherein, 1---swivel nozzle, 5---airduct.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is described in further detail.
But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment.
In plasma discharge process, meeting produces a lot of short lives and important active oxide material, as oxygen atom, and positive oxygen ion and negative oxygen ion, swivel nozzle Main Function is that the active oxide material in plasma is mixed with processing waste gas as far as possible soon and uniformly.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 have determined the size of swivel nozzle, wherein R and L influence each other, and due to plasma nozzle structural design, R is at 100-300mm.
Embodiment 1:
The 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 that enter from high pressure admission mouth access plasma swivel nozzle by swivel joint, in this reactor, each nozzle fumarole diameter is 8mm, the jet flow velocity of nozzle 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 four shower nozzles of design.Dust diameter is got 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 at 0.17 meter per second.Plasma gas and processing waste gas, the mixed proportion of two kinds of gas volumes is 1:30, processes continuously organic exhaust gas, clearance reaches 88%--95%.And under same treatment Parameter Conditions, without swivel nozzle, clearance is only 45%--60%.
Embodiment 2:
The 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 that enter from high pressure admission mouth access plasma swivel nozzle by swivel joint, in this reactor, each nozzle fumarole diameter is 8mm, the jet flow velocity of nozzle 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 three shower nozzles of design.Dust diameter is got 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 at 0.13 meter per second.Plasma gas and processing waste gas, the mixed proportion of two kinds of gas volumes is 1:30, processes continuously organic exhaust gas, clearance reaches 85%--94%.And under same treatment Parameter Conditions, without swivel nozzle, clearance is only 45%--60%.
Result from embodiment 1 and embodiment 2, adopt the effect of plasma nozzle to be: can well make plasma gas mix with processing waste gas, thereby 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 mainly partly comprised of distribution part and electrion, and on distribution part and electrion part-structure, R is preferably comparatively suitable in the scope of 100-300mm.When R increases, process the corresponding increase of pipeline of gas, the rotary nozzle quantity of swivel nozzle also can increase.Nozzle fumarole diameter is taken as 8mm, in design, the size in nozzle fumarole aperture, affect fumarole plasma gas ejection flow velocity, the source of the gas of swivel nozzle is to provide compressed air by air supply pipe, when air demand one timing, the gross area of nozzle fumarole is less, the jet flow velocity of nozzle is larger, and in design, getting nozzle fumarole diameter is 8mm, and the rotary nozzle quantity of swivel nozzle is taken as 2-8.The setting of the pore size of the size of R, the number of swivel nozzle and nozzle fumarole, restriction mutually between several conditions.
After plasma generator energising, discharge current is relevant with discharge voltage, and the jet flow velocity of nozzle does not affect plasma discharge electric current, and when the jet flow velocity of nozzle is larger, the power consumption of unit plasma volume is less.
The principle that lower temperature plasma technology is processed pollutant is: under the effect of extra electric field, taking in a large number that medium discharge produces can be bombarded contaminant molecule by electronics, make its ionization, dissociate and excite, then physics, the chemical reaction of series of complex have just been caused, make complicated macromolecule contaminant change simple little molecule safe material into, or make poisonous and harmful substance be transformed into material nontoxic or the low evil of low toxicity, thereby make the pollutant removal of being degraded.Because electronics average energy of producing after its ionization is at 10ev, suitably controls reaction condition and can realize and be generally difficult to realize or the very slow chemical reaction of speed becomes very quick.In environmental pollution treatment field, lower temperature plasma technology advantage aspect gaseous contaminant improvement is remarkable, also the increasing improvement for gaseous contaminant.
Claims (8)
1. an Atomospheric pressure glow discharge plasma reactor with rotation electrode, it is characterized in that: reactor is arranged on to 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 access plasma swivel nozzle by swivel joint.
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. according to claim 1 or the Atomospheric pressure glow discharge plasma reactor with rotation electrode claimed in claim 2, it is characterized in that: the number of described swivel nozzle is 2-8.
4. according to claim 1 or the Atomospheric pressure glow discharge plasma reactor with rotation electrode claimed in claim 2, it is characterized in that: the center line of swivel nozzle and the distance of rotation centerline are L, L is 10-100mm.
5. according to claim 1 or the Atomospheric pressure glow discharge plasma reactor with rotation electrode claimed in claim 2, it is characterized in that: the center line of swivel nozzle and the distance of rotation centerline are L, L is 50mm.
6. according to claim 1 or the Atomospheric pressure glow discharge plasma reactor with rotation electrode claimed in claim 2, it is characterized in that: the radius of turn of swivel nozzle is R, R is 100-300mm.
7. according to claim 1 or the Atomospheric pressure glow discharge plasma reactor with rotation electrode claimed in claim 2, it is characterized in that: the radius of turn of swivel nozzle is R, R is 200mm.
8. according to claim 1 or the Atomospheric pressure glow discharge plasma reactor with rotation electrode claimed in claim 2, it is characterized in that: the fumarole diameter of described swivel nozzle is 8mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961646A (en) * | 2019-11-07 | 2020-04-07 | 深圳航科新材料有限公司 | Metal powder and method for producing same |
| CN110973987A (en) * | 2019-12-27 | 2020-04-10 | 广东美的厨房电器制造有限公司 | Cooking apparatus |
| CN111230134A (en) * | 2020-03-10 | 2020-06-05 | 深圳航科新材料有限公司 | Multicomponent alloy powder and its fast preparation method |
| CN111331146A (en) * | 2020-03-10 | 2020-06-26 | 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 |
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2013
- 2013-12-12 CN CN201310672736.9A patent/CN103657359B/en not_active Expired - Fee Related
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)
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| 韩立民: "《等离子热处理》", 28 February 1997, article "低压气体放电", pages: 21-31 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961646A (en) * | 2019-11-07 | 2020-04-07 | 深圳航科新材料有限公司 | Metal powder and method for producing same |
| CN110973987A (en) * | 2019-12-27 | 2020-04-10 | 广东美的厨房电器制造有限公司 | Cooking apparatus |
| CN111230134A (en) * | 2020-03-10 | 2020-06-05 | 深圳航科新材料有限公司 | Multicomponent alloy powder and its fast preparation method |
| CN111331146A (en) * | 2020-03-10 | 2020-06-26 | 深圳航科新材料有限公司 | Graphene-coated superfine powder and 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 |
| 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 |
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| CN103657359B (en) | 2015-08-26 |
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