CN110461082A - A kind of apparatus and method reducing NOx content in air plasma pharos flame - Google Patents
A kind of apparatus and method reducing NOx content in air plasma pharos flame Download PDFInfo
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- CN110461082A CN110461082A CN201910618244.9A CN201910618244A CN110461082A CN 110461082 A CN110461082 A CN 110461082A CN 201910618244 A CN201910618244 A CN 201910618244A CN 110461082 A CN110461082 A CN 110461082A
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- air plasma
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/28—Cooling arrangements
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of apparatus and method of NOx content in reduction air plasma pharos flame, the device includes metal cylinder and cavity, metal cylinder can be docked with the outlet end of air plasma torch, and sealing joint, cavity is connected to plasma torch flame export；Metal cylinder surface is equipped with the Imported gas of controllable flow rate, and the natural gas channel of connection cavity and Imported gas is equipped in metal cylinder, natural gas can be passed through into cylinder；Metal cylinder inner surface is water-cooling wall.When work, by device and see that air plasma torch outlet end is tightly connected, by being passed through natural gas into device cavity, utilize the high reaction activity of natural gas under high temperature and oxygen, the concentration of oxygen atom and other structures oxygen radical in plasma flame is controlled, to inhibit the generation of NOx in plasma flame.The device of the invention can also be integrated into air plasma torch ontology, and structure is simple, and it is obvious to lower NOx effect.
Description
Technical field
The present invention relates to heat plasma technology field, it is related to NOx content in a kind of reduction air plasma pharos flame
Apparatus and method.
Background technique
In recent years, with the continuous development of plasma technique, in waste treatment, new material manufacture, material surface
There is increasingly extensive application in the fields such as processing, electronic information technology, medical and beauty treatment.Thermal plasma torch is common plasma
Body generating device can will be passed through dielectric gas (air, carbon dioxide, hydrogen, the indifferent gas of torch body by interelectrode electric discharge
Body etc.) plasma, the plasma of high temperature is generated, and torch body is sprayed in the form of plasma flame.
Air is one of most common plasma medium gas.When air is used as plasma medium gas, etc.
Containing a large amount of active nitrogen, oxygen atom free radical in gas ions flame, after the mixed degree of flame reduces, oxygen atom free radical easily with
Nitrogen-atoms free radical or other molecules, group react, and generate all kinds of NOx substances.The generation of NOx is not only in plasma
Body flame inside occurs, and can travel in the environment of flame periphery with the diffusion of active oxygen radical.It is surveyed according to experiment
Amount can reach the 10% of the total air dosage of air plasma torch because of the NOx that air plasma pharos flame influences and generates.
NOx is one of main gaseous contamination source.Other than with very strong bio-toxicity, and cause acid rain, photochemical fog
With the arch-criminal of the environmental problems such as depletion of the ozone layer.NOx substance steady chemical structure then needs once generating by complicating
Process removing.Therefore in the application of air plasma torch, it is necessary to the generation of NOx from air plasma pharos flame
Mechanism considers, NOx is inhibited to generate.But in existing plasma technique, there is not yet controlling air plasma from source
The technology that NOx is generated in pharos flame.
Summary of the invention
The purpose of the present invention is to provide a kind of devices of NOx content in reduction air plasma pharos flame, solve empty
The excessively high problem of NOx content in gas plasma flame.
In order to solve the above technical problems, the present invention adopts the following technical scheme that: a kind of reduction air plasma pharos flame
The device of middle NOx content, including metal cylinder；The metal cylinder is intracorporal to be provided with cavity；The metal cylinder and air
The docking of plasma torch outlet end；The cavity is connected to plasma torch flame export；The metal cylinder outer surface is equipped with
Imported gas；The natural gas channel of connection cavity and Imported gas is equipped in metal cylinder, for spraying into day into cavity
Right gas.
Further, for the metal cylinder with air plasma torch outlet end using being fixedly connected, joint face is sealing
's；The cavity diameter that metal cylinder connects air plasma torch end is equal to the flame export diameter of air plasma torch.
Further, the metal cylinder inner wall uses water-cooling wall.
Further, the natural gas channel is divided into 1-8 strands, and each stock channel outlet is opened in metal cylinder inner surface.
Further, which controls the switch and flow of natural gas by regulating device.
Further, natural gas can be replaced with liquefied petroleum gas or other hydrocarbon gas, the carbon dust that can be also sprayed into high speed
Replace.
Further, device can be integrated into air plasma torch ontology, and air plasma torch substitutes metal cylinder；
By adding natural gas channel on the torch body that air plasma torch leans on entrance end, added into air plasma flame
Natural gas.
The present invention also provides a kind of methods of NOx content in reduction air plasma pharos flame, which is characterized in that includes
Following steps:
S1 fixes the device of NOx content in reduction air plasma pharos flame described in any one of claim 1-6
To the outlet end of air plasma torch, the water-cooling system of device for opening；
S2 opens air plasma torch, makes its normal operation, and plasma flame is sprayed from described device by cavity；
S3 opens Imported gas, is gradually increased gas discharge to setting value, in plasma flame the generation of NOx due to
The addition of natural gas and be suppressed；
After the completion of S4 task, it is gradually reduced gas discharge, until completely closing Imported gas；
S5 closes air plasma torch；
The water-cooling system of S6 closing described device metal cylinder.
Beneficial effects of the present invention: the present invention is by adding natural gas into air plasma flame, using under high temperature
The high reaction activity of natural gas and oxygen controls the concentration of oxygen atom and other structures oxygen radical in plasma flame, effectively
The generation of NOx in plasma torch flame is controlled, after actual measurement, under identical service condition, NOx in air plasma pharos flame
Yield is reduced to 0.005% from the 10% of total air dosage.
Detailed description of the invention
It, below will be to needed in the embodiment in order to more clearly illustrate the technical solution in the embodiment of the present invention
Attached drawing is simply introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments recorded in the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the schematic diagram of apparatus structure in embodiment 1 provided by the invention.
Fig. 2 is the A direction view of Fig. 1.
Fig. 3 is the schematic diagram of apparatus structure in embodiment 2 provided by the invention.
Fig. 4 is the A direction view of Fig. 3.
Fig. 5 is the schematic diagram of apparatus structure in embodiment 3 provided by the invention.
Specific embodiment
Technical solution of the present invention will be clearly and completely described by specific embodiment below.
Embodiment 1
A kind of device reducing NOx content in air plasma pharos flame, as shown in Figure 1, including metal cylinder 101；It is described
Metal cylinder 101 in be provided with cavity 102；The metal cylinder 101 passes through sealing screw thread 103 and air plasma torch
The docking of 104 outlet ends.Cavity 102 when docking in metal cylinder 101 is connected to plasma torch flame export 105, metal cylinder
The cavity diameter that body 101 docks plasmatorch flame export is consistent with air plasma pharos flame outlet diameter, metal cylinder 101
Outer surface is along the circumferential direction uniformly provided with 4 Imported gas 106-109 adjusted with flow, is equipped in metal cylinder 101
It is connected to the natural gas channel of cavity and each Imported gas, for spraying into natural gas into cavity.
101 inner wall of metal cylinder of the present embodiment uses water-cooling wall.
The method that NOx content in air plasma pharos flame is reduced using the device of the present embodiment comprising the steps of:
The outlet end that described device is affixed to air plasma torch 104 by sealing screw thread 103 by S101, checks gas
Close property, opens the water-cooling system of metal cylinder；
S102 opens air plasma torch 104, makes its normal operation, and plasma flame passes through cavity 102 from described device
Middle ejection；
S103 opens Imported gas 106-109 one by one, is gradually increased gas discharge to setting value, in plasma flame
The generation of NOx due to natural gas addition and be suppressed；
After the completion of S104 task, reduce gas discharge one by one, until all Imported gas 106-109 are completely closed；
S105 closes air plasma torch 104；
The water-cooling system of S106 closing described device metal cylinder.
Embodiment 2
A kind of device reducing NOx content in air plasma pharos flame, as shown in Fig. 2, including metal cylinder B201；It is described
Metal cylinder B201 in be provided with cavity B202；The metal cylinder B is gone out by flange 203 and air plasma torch B204
Mouthful end docking, and guarantee air-tightness by Graphite pad 205, cavity B202 when docking in device go out with plasma torch flame
Mouth B206 connection, device docks the cavity diameter and plasmatorch flame export B206 diameter one of plasmatorch flame export
It causes, the outer surface metal cylinder B is equipped with the high speed carbon dust import 207 of adjustable carbon dust flow, and connection cavity is equipped in metal cylinder B
The toner passage 208 of B and carbon dust import, for spraying into carbon dust at a high speed into cavity, the metal cylinder B inner wall uses water cooling
Wall.
The method that NOx content in air plasma pharos flame is reduced using the present apparatus comprising the steps of:
Described device is affixed to the outlet end of air plasma torch B204 by S201 by flange 203, is checked airtight
Property, open the water-cooling system of metal cylinder B；
S202 opens air plasma torch B204, makes its normal operation, and plasma flame passes through cavity B202 from the dress
Set middle ejection；
S203 opens carbon dust import 206, adjusts carbon dust straying quatity to setting value, the generation of NOx is due to carbon in plasma flame
The addition of powder and be suppressed；
After the completion of S204 task, stops spraying into carbon dust, close air plasma torch B203；
The water-cooling system of S205 closing described device metal cylinder B.
Embodiment 3
In the present embodiment, the device for reducing NOx content in air plasma pharos flame has been integrated into air by the present embodiment
In torch body, as shown in figure 3, being provided with 1 close to outlet end in air plasma torch C301 has flow tune
The liquefied petroleum gas import 302 for saving switch is equipped with a ring-like gas chamber 303 in torch body and is used for uniform gas distribution,
Ring-like gas chamber 303 is connected to liquefied petroleum gas import 302, is along the circumferential direction evenly distributed with 8 liquefaction stones in ring-like gas chamber inner wall
Gas channel connects the passage of flame 304 in plasma torch, since the passage of flame wall of air plasma torch has been water
Cold wall, there is no need in addition add water-cooling system.
The method that NOx content in air plasma pharos flame is reduced in the present embodiment is as follows:
S301 opens air plasma torch C, makes its normal operation, and plasma flame is sprayed by passage of flame 304；
S302 opens liquefied petroleum gas import 302, is gradually increased liquefied petroleum throughput to setting value, in plasma flame
The generation of NOx due to liquefied petroleum gas addition and be suppressed；
After the completion of S303 task, it is gradually reduced liquefied petroleum throughput, until liquefied petroleum gas import 302 completely closes；
S304 closes air plasma torch.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to design of the invention
It is defined with range, without departing from the design concept of the invention, ordinary engineering and technical personnel is to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, claimed skill of the invention
Art content is all documented in technical requirements book.
Claims (8)
1. a kind of device for reducing NOx content in air plasma pharos flame, it is characterised in that: including metal cylinder；It is described
Metal cylinder intracorporal be provided with cavity；The metal cylinder is docked with air plasma torch outlet end；The cavity with etc.
Gas ions pharos flame outlet；The metal cylinder outer surface is equipped with Imported gas；Connection cavity is equipped in metal cylinder
With the natural gas channel of Imported gas, for spraying into natural gas into cavity.
2. a kind of device for reducing NOx content in air plasma pharos flame according to claim 1, feature exist
In: for the metal cylinder with air plasma torch outlet end using being fixedly connected, joint face is sealing；Metal cylinder connection
The cavity diameter at air plasma torch end is equal to the flame export diameter of air plasma torch.
3. a kind of device for reducing NOx content in air plasma pharos flame according to claim 1, feature exist
In: the metal cylinder inner wall uses water-cooling wall.
4. a kind of device for reducing NOx content in air plasma pharos flame according to claim 1, feature exist
In: the natural gas channel is divided into 1-8 strands, and each stock channel outlet is opened in metal cylinder inner surface.
5. a kind of device for reducing NOx content in air plasma pharos flame according to claim 1, feature exist
In: the switch and flow that the device passes through regulating device control natural gas.
6. a kind of device for reducing NOx content in air plasma pharos flame according to claim 1, feature exist
In: natural gas can be replaced with liquefied petroleum gas or other hydrocarbon gas, and the carbon dust that can be also sprayed into high speed replaces.
7. a kind of device for reducing NOx content in air plasma pharos flame according to claim 1, feature exist
In: device can be integrated into air plasma torch ontology, and air plasma torch substitutes metal cylinder；By air etc. from
Daughter torch adds natural gas channel on the torch body of entrance end, adds natural gas into air plasma flame.
8. a kind of method for reducing NOx content in air plasma pharos flame, which is characterized in that comprise the steps of:
S1 fixes the device of NOx content in reduction air plasma pharos flame described in any one of claim 1-6
To the outlet end of air plasma torch, the water-cooling system of device for opening；
S2 opens air plasma torch, makes its normal operation, and plasma flame is sprayed from described device by cavity；
S3 opens Imported gas, is gradually increased gas discharge to setting value, in plasma flame the generation of NOx due to
The addition of natural gas and be suppressed；
After the completion of S4 task, it is gradually reduced gas discharge, until completely closing Imported gas；
S5 closes air plasma torch；
The water-cooling system of S6 closing described device metal cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618244.9A CN110461082B (en) | 2019-07-10 | 2019-07-10 | Device and method for reducing NOx content in flame of air plasma torch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618244.9A CN110461082B (en) | 2019-07-10 | 2019-07-10 | Device and method for reducing NOx content in flame of air plasma torch |
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| CN110461082A true CN110461082A (en) | 2019-11-15 |
| CN110461082B CN110461082B (en) | 2021-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115350830A (en) * | 2022-08-25 | 2022-11-18 | 江苏天楹环保能源成套设备有限公司 | Multi-medium self-non-return self-mixing spray gun and using method thereof |
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| CN115350830B (en) * | 2022-08-25 | 2024-03-29 | 江苏天楹环保能源成套设备有限公司 | Multi-medium self-check self-mixing spray gun and application method thereof |
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| CN110461082B (en) | 2021-11-30 |
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