CN208158968U - High-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming - Google Patents
High-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming Download PDFInfo
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- CN208158968U CN208158968U CN201820439592.0U CN201820439592U CN208158968U CN 208158968 U CN208158968 U CN 208158968U CN 201820439592 U CN201820439592 U CN 201820439592U CN 208158968 U CN208158968 U CN 208158968U
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Abstract
A kind of high-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming, including air distributing device, electric discharge device, electrical characteristics detection device, high-frequency ac power and product analysis device.Electric discharge device includes spiral glass tube, high-field electrode, low-field electrode and cloche, and spiral glass tube is sleeved on the lower part of high-field electrode, and low-field electrode is sleeved on the outside of high-field electrode, is sealed in cloche.Tapered electrode is made in high-field electrode, and electrode tip angle is 30 ° -60 °, and cylinder electrode is made in low-field electrode, and low-field electrode is more high than high-voltage electricity, the smallest annular clearance of high-field electrode and low-field electrode is 2 mm；The system optimization high-field electrode apex angle and high-low pressure electrode relative altitude of rotational slide arc discharging plasma generating device, and using the intake method of spiral glass tube, using high-frequency ac power as excitation power supply, the optimal electrode structure parameter of reforming effect has been obtained.
Description
Technical field
The utility model relates to a kind of high-frequency ac rotational slide arc discharging plasma generations for methane dry reforming
System belongs to atmospheric pressure plasma discharge source basis and applied technical field.
Background technique
Rotational slide arc discharge receives the extensive concern of researcher in the fields such as methane dry reforming and carbon dioxide decomposition.
The research work of the arc discharging plasma method for generation of atmospheric pressure rotational slide at present is concentrated mainly on electrode structure and excitation electricity
Two, source aspect.Electrode structure will have a direct impact on the spatial distribution of electric field, and then it is strong to influence discharge type, state and plasma
Degree.The voltage waveform of different excitation power supply output is different, such as DC voltage, alternating voltage, high frequency voltage, pulse voltage.
Electric field is adjusted by adjusting voltage waveform to change with time, and then adjusts the acceleration of electronics and ion and the product of energy in electric field
Tired process.
Formed rotational slide arc discharging plasma high-field electrode structure generally include helical spring silk, stainless steel column and
Cone, low-field electrode structure is usually stainless steel cylinder or cathode shield.Stainless steel cone high-field electrode and stainless steel cylindrical shape are low
The electrode structure that piezoelectricity pole is constituted, is simple to manufacture, convenient disassembly, receives significant attention in methane dry reforming research.It is wherein high
The relative altitude of pressure electrode tip angle and high-low pressure electrode is to influence the key factor of electric arc sliding process, so which kind of high-field electrode
Apex angle and high-low pressure electrode relative altitude are one of the problem of needing further investigated most beneficial for methane dry reforming.
There are many excitation power supplies of rotational slide arc discharging plasma, but since high-frequency alternating current source frequency is high, one
Fix time it is interior higher Implantation Energy can be provided for electric discharge device, and do not needed in device concatenation current-limiting resistance, more
Energy be used to that reforming reaction be excited to carry out.In addition, the high-frequency ac power is small in size, and it is light-weight, there is higher control essence
Degree, it is convenient for management, so high-frequency ac power is increasingly being used in plasma research and modern industry.
It is swirling eddy that rotational slide arc discharging plasma, which forms one of indispensable condition,.Form swirling eddy
Mode mainly includes two kinds, respectively Magnetic driving and tangential admission.Magnetic field applies tangential Lorentz force to electric arc, to make electric arc
Rotation, and along electrode upward sliding under the action of uprush.Although magnetic field can effectively go into rotational slide arc, magnetic
Iron it is at high cost, and to electric discharge device bring heavy burden when placing.The mode of tangential admission is usually in low-field electrode
Upper uniformly to make a call to 3 ~ 4 tangential admission holes, this 3 ~ 4 strands of tangential gas flow rows are at approximate swirling eddy, so that row is at rotational slide arc.
This intake method destroys low-field electrode structure, and tangential admission hole once row at being just difficult by changing air inlet aperture
Change air inlet gas velocity, unless remaking new low-field electrode, increase cost, operability reduces.
Summary of the invention
The purpose of this utility model is to provide the high-frequency ac rotational slide arc discharge plasmas for methane dry reforming
Body generating system, high-field electrode apex angle, high-low pressure electrode phase by adjusting rotational slide arc discharging plasma generating device
To height, the effect of methane dry reforming is investigated.
To achieve the above object, and the problems mentioned above in the background art, the technical side that the utility model uses are solved
Case is：A kind of high-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming, including air distributing device,
Electric discharge device, electrical characteristics detection device, high-frequency ac power and product analysis device；The air distributing device includes carbon dioxide gas
Bottle, methane gas cylinder, mass flow control meter and mixed gas cylinder, dioxide bottle and methane gas cylinder pass through pipeline through respective respectively
Mass flow control meter is connect with mixed gas cylinder together；The electric discharge device includes spiral glass tube, the height being arranged in cloche
Piezoelectricity pole and low-field electrode, spiral glass tube are sleeved on the lower part of high-field electrode, and low-field electrode is sleeved on the outside of high-field electrode；
The high-field electrode is tapered electrode made of stainless steel material, and electrode tip angle is 30 ° -60 °, and the low-field electrode is stainless steel
Cylinder electrode made of material, low-field electrode are more high than high-voltage electricity, the smallest annular clearance of high-field electrode and low-field electrode
For 2 mm；The electrical characteristics detection device includes oscillograph, current probe and high-voltage probe, and the current probe and high pressure of ground connection are visited
Head is electrically connected with oscillograph；The product analysis device includes gas chromatographicanalyzer and computer, gas chromatographicanalyzer
It is electrically connected with computer；The mixed gas cylinder connects one end of spiral glass tube by pipeline, and the other end of spiral glass tube is straight
Lead to the inner cavity of cloche in succession, the inner cavity of cloche connects gas chromatographicanalyzer by pipeline（5a）；The high-frequency alternating current
Source is electrically connected high-voltage probe and high-field electrode；Mixed biologic gas in the mixed gas cylinder enters high-field electrode by spiral glass tube
With the smallest annular clearance of low-field electrode, under the driving of high-frequency ac power, the air gap is breakdown and generates electric arc, and electric arc is in spiral
Along two electrode surface rotational slides under the action of air-flow, a kind of exchange rotational slide arc is formed, while biogas is reformed, weight
Whole biogas enters gas chromatographicanalyzer and is analyzed.
The high-frequency ac power selects CTP-2000K product, and frequency is 5-11 kHz.
The technical effect and advantage of the utility model：This high-frequency ac rotational slide arc discharge for methane dry reforming
Plasma generating system includes air distributing device, electric discharge device, electrical characteristics detection device, high-frequency ac power and product analysis dress
It sets.Electric discharge device includes spiral glass tube, high-field electrode and the low-field electrode being arranged in cloche, and spiral glass tube is sleeved on
The lower part of high-field electrode, low-field electrode are sleeved on the outside of high-field electrode.Tapered electrode is made in high-field electrode, and electrode tip angle is
30 ° -60 °, cylinder electrode is made in low-field electrode, and low-field electrode is more high than high-voltage electricity, high-field electrode and low-field electrode
The smallest annular clearance be 2 mm；The system optimization high-field electrode apex angle and height of rotational slide arc discharging plasma generating device
Low-field electrode relative altitude, and obtained using the intake method of spiral glass tube using high-frequency ac power as excitation power supply
The optimal electrode structure parameter of reforming effect.
Detailed description of the invention
Fig. 1 is the working principle of the high-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming
Figure.
In figure：1, air distributing device, 1a, dioxide bottle, 1b, mass flow control meter, 1c, mixed gas cylinder, 1d, methane gas
Bottle, 2, electric discharge device, 2a, spiral glass tube, 2b, high-field electrode, 2c, low-field electrode, 2d, cloche, 3, electrical characteristics detection dress
It sets, 3a, oscillograph, 3b, current probe, 3c, high-voltage probe, 4, high-frequency ac power, 5, product analysis device, 5a, gas phase color
Spectrum analysis instrument, 5b, computer.
Specific embodiment
Below in conjunction with attached drawing, the technical solution of the utility model is clearly and completely described.
Fig. 1 shows the work of the high-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming
Schematic diagram.In figure, this high-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming includes matching
Device of air 1, electric discharge device 2, electrical characteristics detection device 3, high-frequency ac power 4 and product analysis device 5.Air distributing device 1 includes
Dioxide bottle 1a, methane gas cylinder 1d, mass flow control meter 1b and mixed gas cylinder 1c, dioxide bottle 1a and methane gas cylinder
1d passes through pipeline respectively and connect together with mixed gas cylinder 1c through respective mass flow control meter 1b.Electric discharge device 2 includes that setting exists
Spiral glass tube 2a, high-field electrode 2b and low-field electrode 2c, spiral glass tube 2a in cloche 2d are sleeved on high-field electrode 2b
Lower part, low-field electrode 2c is sleeved on the outside of high-field electrode 2b.High-field electrode 2b is tapered electrode made of stainless steel material,
Electrode tip angle is 45 °, and low-field electrode 2c is cylinder electrode made of stainless steel material, and low-field electrode is more high than high-voltage electricity, the smallest annular clearance of high-field electrode and low-field electrode is 2 mm.Electrical characteristics detection device 3 includes oscillograph 3a, electricity
Probe 3b and high-voltage probe 3c is flowed, current probe 3b and high-voltage probe 3c and the oscillograph 3a of ground connection are electrically connected.Product point
Analysis apparatus 5 includes gas chromatographicanalyzer 5a and computer 5b, and gas chromatographicanalyzer 5a is electrically connected with computer 5b.Mixed gas cylinder
1c connects one end of spiral glass tube 2a by pipeline, and the other end of spiral glass tube 2a is directly connected to the inner cavity of cloche 2d,
The inner cavity of cloche 2d connects gas chromatographicanalyzer 5a by pipeline.High-frequency ac power 4 is electrically connected high-voltage probe 3c and height
Piezoelectricity pole 2b.High-frequency ac power 4 selects CTP-2000K product, and frequency is 5-11 kHz.Mixed biologic gas in mixed gas cylinder 1c
The smallest annular clearance for entering high-field electrode 2b Yu low-field electrode 2c by spiral glass tube 2a, under the driving of high-frequency ac power 4,
The air gap is breakdown and generates electric arc, and electric arc, along two electrode surface rotational slides, forms one kind under the action of spiral air flow
Rotational slide arc is exchanged, while biogas is reformed, the biogas of reformation enters gas chromatographicanalyzer 5a and analyzed.
In order to investigate the influence of different high-field electrode apex angles and high-low pressure electrode relative altitude to methane dry reforming effect, if
Three kinds of electrode structures of different high-field electrode apex angles, the low-field electrode of these three electrode structures more high than high-voltage electricity 20 are counted
mm；High-field electrode apex angle is 45 °, and high-low pressure electrode relative altitude is different.
When supply voltage is 8kV, and high-field electrode apex angle is 45 °, energy efficiency is respectively than high-field electrode under the same terms
The energy efficiency that 60 ° and 30 ° of apex angle increases 22% and 25%.When supply voltage is 8 kV, low-field electrode is higher than high-field electrode
Under the conditions of energy effciency ratio high-field electrode be higher than low-field electrode under energy efficiency increase 0.14 mmol/kJ.This example knot
Fruit, which demonstrates high-field electrode apex angle and high-low pressure electrode relative altitude, has a significant impact to methane dry reforming effect, and works as high pressure
When electrode tip angle is 45 °, low-field electrode is higher than 20 mm of high-field electrode, methane dry reforming effect is best.
Claims (2)
1. a kind of high-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming, including air distributing device
（1）, electric discharge device（2）, electrical characteristics detection device（3）, high-frequency ac power（4）With product analysis device（5）；It is characterized in that：
The air distributing device（1）Include dioxide bottle（1a）, methane gas cylinder（1d）, mass flow control meter（1b）With mixed gas cylinder
（1c）, dioxide bottle（1a）With methane gas cylinder（1d）It is controlled and is counted through respective mass flow by pipeline respectively（1b）Together
With mixed gas cylinder（1c）Connection；The electric discharge device（2）Comprising being arranged in cloche（2d）In spiral glass tube（2a）, high-voltage electricity
Pole（2b）And low-field electrode（2c）, spiral glass tube（2a）It is sleeved on high-field electrode（2b）Lower part, low-field electrode（2c）Suit
In high-field electrode（2b）Outside；The high-field electrode（2b）For tapered electrode made of stainless steel material, electrode tip angle is
30 ° -60 °, the low-field electrode（2c）For cylinder electrode made of stainless steel material, low-field electrode is more high than high-voltage electricity, the smallest annular clearance of high-field electrode and low-field electrode is 2 mm；The electrical characteristics detection device（3）Include oscillograph
（3a）, current probe（3b）And high-voltage probe（3c）, the current probe of ground connection（3b）And high-voltage probe（3c）With oscillograph（3a）
It is electrically connected；The product analysis device（5）Include gas chromatographicanalyzer（5a）And computer（5b）, gas chromatographicanalyzer
（5a）With computer（5b）It is electrically connected；The mixed gas cylinder（1c）Spiral glass tube is connected by pipeline（2a）One end, spiral
Glass tube（2a）The other end be directly connected to cloche（2d）Inner cavity, cloche（2d）Inner cavity pass through pipeline connect gas phase color
Spectrum analysis instrument（5a）；The high-frequency ac power（4）It is electrically connected high-voltage probe（3c）And high-field electrode（2b）；The mixed gas cylinder
（1c）In mixed biologic gas pass through spiral glass tube（2a）Into high-field electrode（2b）With low-field electrode（2c）The smallest annular clearance,
In high-frequency ac power（4）Driving under, the air gap is breakdown and generates electric arc, and electric arc is under the action of spiral air flow along two
Electrode surface rotational slide forms a kind of exchange rotational slide arc, while biogas is reformed, and the biogas after reformation enters
Gas chromatographicanalyzer（5a）It is analyzed.
2. a kind of high-frequency ac rotational slide arc discharging plasma for methane dry reforming according to claim 1 is sent out
Raw system, it is characterized in that：The high-frequency ac power（4）CTP-2000K product is selected, frequency is 5-11 kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820439592.0U CN208158968U (en) | 2018-03-29 | 2018-03-29 | High-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming |
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| CN201820439592.0U CN208158968U (en) | 2018-03-29 | 2018-03-29 | High-frequency ac rotational slide arc discharging plasma generating system for methane dry reforming |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630020A (en) * | 2019-01-11 | 2019-04-16 | 中国石油大学(华东) | Multichannel high-low pressure composite plasma boring method |
| CN109663556A (en) * | 2019-01-27 | 2019-04-23 | 浙江大学 | Disturb the reaction unit and method of enhanced dielectric barrier discharge activation carbon dioxide |
-
2018
- 2018-03-29 CN CN201820439592.0U patent/CN208158968U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630020A (en) * | 2019-01-11 | 2019-04-16 | 中国石油大学(华东) | Multichannel high-low pressure composite plasma boring method |
| US11293231B2 (en) | 2019-01-11 | 2022-04-05 | China University Of Petroleum (East China) | Multi-path combined high-low voltage plasma drilling method, drill bit for drilling and drill bit apparatus for drilling |
| CN109663556A (en) * | 2019-01-27 | 2019-04-23 | 浙江大学 | Disturb the reaction unit and method of enhanced dielectric barrier discharge activation carbon dioxide |
| CN109663556B (en) * | 2019-01-27 | 2019-12-31 | 浙江大学 | Reaction device and method for activating carbon dioxide by disturbance enhanced dielectric barrier discharge |
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