CN104675582B - Combustible mixed gas heating device for vehicle-mounted microwave reformer - Google Patents
Combustible mixed gas heating device for vehicle-mounted microwave reformer Download PDFInfo
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- CN104675582B CN104675582B CN201510061534.XA CN201510061534A CN104675582B CN 104675582 B CN104675582 B CN 104675582B CN 201510061534 A CN201510061534 A CN 201510061534A CN 104675582 B CN104675582 B CN 104675582B
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- combustion mixture
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Abstract
The invention provides a combustible mixed gas heating device for a vehicle-mounted microwave reformer. The combustible mixed gas heating device comprises a reaction cavity, a microwave power tube, a microwave plasma reaction tube, a discharge ignition device and a microwave power absorber, wherein the microwave power absorber is arranged in the microwave plasma reaction tube and is prepared from a high-temperature-resistant microwave absorption material; the microwave absorption material absorbs most redundant microwave energy which is not absorbed by combustible mixed gas and converts the microwave energy into heat energy; the heat energy generated by the microwave absorption material is used for heating the combustible mixed gas, so that the combustible mixed gas can be preheated to increase the temperature. The reaction temperature of the combustible mixed gas is increased, so that the heat moving speed and the collision frequency of particles are increased, and the breakdown electric field intensity required for ignition can be reduced; furthermore, a reaction chain is additionally arranged, so that the degree of ionization and the rising speed of the degree of ionization are increased, the reaction rate is increased, and the energy is saved.
Description
Technical field
The present invention relates to microwave electromagnetic field heating technique, particularly to a kind of heating of vehicle-carried microwave reformer combustion mixture
Device.
Background technology
Microwave heating is made a big difference with traditional heating means, and traditional heating means are to rely on thermal source, by spoke
Penetrate, conduct, the approach such as convection current, so that the surface of object is heated first, then pass through interior of articles heat transfer, make object temperature by table
And in gradually rise.Microwave has that energy-efficient, firing rate is fast, homogeneous heating, safety and environmental protection, sanitation and hygiene, easily controllable
Deng many-sided advantage.
In microwave electric field, the size of Absorption of Medium microwave power be proportional to frequency, electric field intensity square, dielectric constant
And dielectric loss angle tangent.Dielectric loss angle tangent represents active loss under alternating electric field for the dielectric substance and idle
The ratio of loss, value is bigger, and dielectric loss is bigger.Under alternating electric field, dielectric substance itself polar molecule is polarized due to inertia
Delayed, loss electric field energy and the loss causing of generating heat.
Dielectric constant and dielectric loss angle tangent are relevant with the polarity of material molecule and the density of material, the mixing of low pressure
Combustion gas is very low due to gaseous density, dielectric constant close to 1, dielectric loss angle tangent close to 0, for the absorption of microwave energy
Seldom., due to the positive and negative free charge of a large amount of ionization, for gaseous state, dielectric constant and dielectric loss angle are just for plasma
Cut value very greatly, the absorption for microwave is also very big, and the microwave energy of plasma absorption is relevant with its ionization degree or electron density.
Therefore, microwave pad under gaseous state and plasma state for the air mixture is widely different.
When being started due to microwave plasma reformer, the combustion mixture in reaction tube not yet forms plasma state,
Few portion of energy of microwave source generation can only be absorbed.Because gaseous state and plasma state load difference are very big, impedance matching is difficult to
The reflection problems of a large amount of dump energies when solving to start.The microwave output power of microwave plasma reformer reaches several hectowatts, such as
Fruit absorbs remaining major part energy by isolator and/or absorbing load, then will increase isolator and/or the suction of a few hectowatt power
Receive load, bring size, weight, heat dissipation problem, be unfavorable for vehicle-mounted use.If remaining major part energy reflection returns microwave source,
The impact of reflected energy not only affects to disturb the normal work of microwave source, also easily causes that its temperature is too high, service life reduces,
And deposit the shortcoming slow, that energy utilization rate is low that heats up on startup.
Content of the invention
For solving the above problems, the present invention has designed and developed a kind of vehicle-carried microwave reformer combustion mixture heater,
Absorb the unabsorbed remaining major part microwave energy of combustion mixture using microwave absorbing material, and be converted into heat energy, come pre-
Hot burning mixture, improves the microwave energy absorption in microwave reformer and the efficiency of heating surface, thus improving reaction rate, saves
The energy.
The technical scheme that the present invention provides is:
A kind of vehicle-carried microwave reformer combustion mixture heater is it is characterised in that include
Reaction chamber, is provided with air inlet；
Microwave Power Tubes, it is assemblied in reaction cavity upper cover and gos deep into inside reaction chamber, and described Microwave Power Tubes can be to
Described reaction intracavity transmitting microwave；
Microwave plasma reaction tube, it is arranged on the very big area of described reaction chamber center electric field intensity, described microwave etc. from
Daughter reaction tube is connected with described air inlet, is connected with air mixture in described microwave plasma reaction tube；
Discharge ignition apparatus, it inserts inside described microwave plasma reaction tube, and described discharge ignition apparatus can be
The lower electric discharge of microwave magnetic field effect is thus puncture the air mixture in described microwave plasma reaction tube；
Microwave power absorber, it is arranged inside described microwave plasma reaction tube, can absorb microwave energy
Measure and to heat air mixture.
Preferably, described microwave plasma reaction tube is quartz ampoule, earthenware or fiber pipe.
Preferably, described microwave plasma reaction tube is spiral type.
Preferably, described microwave power absorber is solid by a series of little ball of helical pattern or spiral circle cylindricality
Pipe is constituted.
Preferably, described microwave power absorber is helical solid tubes.
Preferably, described microwave power absorber material is ferrite or ceramic base or alumina base.
Preferably, described discharge ignition apparatus are made up of a wire coil carrying opening, and it is provided with two freely
End, the cone with tip is made in described two free end front portions, and two tips are mutually close, and described two free end insertions are micro-
Ripple plasma reaction pipe is internal and contacts with air mixture, and described microwave is inserted in described microwave electromagnetic field induction discharge loop
Partial metal layers in plasma reaction pipe are exposed, and are not inserted into part and are surrounded by resistant to elevated temperatures insulating barrier.
Preferably, described discharge ignition apparatus include two by metal material make tool cuspidated igniting reflection pin and
The reflection pin bolt being connected with igniting reflection pin, described two igniting reflect the tip of pin relatively, sell bolt by adjusting reflection
The most advanced and sophisticated distance of adjustment two igniting reflection pin.
Preferably, described reaction chamber is alternating share.
Preferably, also include lid, described upper lid is arranged at the top of described reaction chamber, described Microwave Power Tubes and institute
State lid mutually to fix.
The invention has the beneficial effects as follows: combustion mixture heater structure of the present invention is simple, function is efficiently closed
Reason, material are easily obtained.By putting to the position of microwave plasma reaction tube, discharge ignition apparatus, Microwave Power Tubes
Make use of microwave power and decrease device volume of bigization.Unabsorbed to combustion mixture big by microwave power absorber
Portion of energy absorbs again, preheats combustion mixture in advance, improves the absorption efficiency of microwave power, the use with Microwave Power Tubes
Life-span.It is low to microwave power utilization rate that this device solves existing microwave plasma reformer combustion mixture, and microwave occurs
The short shortcoming of device service life, greatly improves the formation rate of plasma simultaneously, the ionization degree with plasma, expands
The thought of microwave electromagnetic field application.
Brief description
Fig. 1 is microwave reformer top view of the present invention.
Fig. 2 is microwave reformer upward view of the present invention.
Fig. 3 is ripple reformer 3 D stereo view of the present invention.
Fig. 4 is microwave power absorber structure schematic diagram of the present invention.
Fig. 5 is microwave power absorber structure schematic diagram of the present invention
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
As shown in Figure 1, Figure 2, Figure 3 shows, the invention provides a kind of vehicle-carried microwave reformer plasma ignition device, including anti-
Answer chamber 1001, Microwave Power Tubes 1002, microwave plasma reaction tube 1003, discharge ignition apparatus 1004, microwave power absorbs
Device 1008.Air inlet 1005 is additionally provided with reaction chamber 1001.It is additionally provided with lid 1009, on upper lid 1009 in this device
It is provided with gas outlet 1007.
Microwave reformer reaction chamber 1001 is alternating share, and there are air mixture air inlet 1005, multiple microwaves in its bottom surface
Power tube 1002 composition microwave power synthesis system is positioned over reaction intracavity, can produce microwave 1006.Microwave Power Tubes 1002
It is assemblied in microwave reformer reaction cavity upper cover 1009, and go deep into microwave reformer reaction chamber 1001.By to semiconductor microwave
The position of power tube 1002 and quantitative analysises, make the synthesis of Microwave Power Tubes 1002 power maximum, and by semiconductor microwave
The control break microwave power output of power tube 1002 voltage, is finally reached the requirement of the output to microwave power for the device igniting.
Microwave plasma reaction tube 1003 is placed in microwave reformer reaction chamber 1001 center, microwave plasma reaction tube
1003 can be quartz ampoule, earthenware, fiber pipe etc., adopt quartz ampoule in the present embodiment.Microwave plasma reaction tube 1003
It is connected with air inlet 1005, in microwave plasma reaction tube 1003, be connected with air mixture.Microwave plasma reaction tube 1003
Do spirality, by increasing capacitance it is possible to increase air mixture absorbs the microwave energy time and makes its absorption microwave energy as much as possible, improve
Response rate.
Ignition discharge device 1004 is made up of a wire coil carrying opening, and it includes two free ends, and two freely
The cone with tip is made in end front portion, and two tips are mutually close, and two free ends insert microwave plasma reaction tube
1003 inside are simultaneously contacted with air mixture, and ignition discharge device 1004 inserts in described microwave plasma reaction tube 1003
Partial metal layers are exposed, and are not inserted into part and are surrounded by resistant to elevated temperatures insulating barrier.Ignition discharge device 1004 is in resonator cavity electromagnetic field
In both can by field coupling, magnetic coupling produce induction electromotive force it is also possible to both mixing pattern produce induction electric
Gesture.Described ignition discharge device 1004 can under microwave magnetic field effect electric discharge thus by described microwave plasma reaction tube
Air mixture in 1003 punctures.
Under different CGCMs, the position of ignition discharge device 1004, the line length of field coupling, magnetic coupling
Area determines the size of ignition discharge device 1004 discharge end induced electromotive force, ignition discharge device 1004 discharge end spacing,
The radius of discharge electrode tips or curvature determine the electric field intensity of region of discharge, and electric field intensity reaches the threshold value puncturing and gets final product shape
Become electric discharge.Therefore cone and most advanced and sophisticated close to each other is made at ignition discharge device 1004 two ends, be conducive to ignition discharge device
1004 electric discharges form high-tension electricity, and air mixture is punctured formation plasma.
As shown in Figure 4, Figure 5, microwave power absorber 1008 is located at microwave plasma reaction tube 1003 center, for reality
Heart spiral circle cylindricality or a series of little ball of helical pattern, its material is ferrite, ceramic base or alumina base etc.
Material.Because combustion mixture can only absorb extremely least a portion of microwave energy, absorbance before breakdown formation plasma
Extremely low.And residue major part microwave energy is then reflected back toward Microwave Power Tubes 1002, it is absorbed intensification.And increase microwave power
After absorber 1008, microwave power absorber 1008 can by unabsorbed for combustion mixture major part microwave energy absorption, for
Own temperature raises.Because microwave power absorber 1008 is direct with combustion mixture in microwave plasma reaction tube 1003
Contact, can transfer heat to combustion mixture after microwave power absorber 1008 heats up makes it by it before plasma
Preheating, advantageously forms plasma.And after plasma is formed, due to the raising of temperature, particle encounter frequency increases, have
Beneficial to heating plasma, improve ionization degree.
Microwave plasma reaction tube 1003 is placed in the very big area of microwave reaction chamber 1001 center electric field intensity, is conducive to discharging
Igniter 1004 is discharged and for air mixture in microwave plasma reaction tube 1003 to be punctured formation plasma, is conducive to improving
Response rate.Combustion mixture enters after microwave plasma reaction tube 1003 by air inlet 1005, and Microwave Exposure power is inhaled first
Receive device 1008 and heat up, preheat.Then discharged by discharge ignition apparatus 1004 again and punctured, form plasma.
Microwave power absorber 1008 passes through reasonable selection microwave power absorbing material, has effectively absorbed flammable mixed
Close the microwave energy of the not absorbent remaining extreme portions of gas.Its position is as shown in Figure 1.In microwave power absorption plant 1008
Heat up after contacting with combustion mixture, by heat transfer, combustion mixture is heated in advance, improve its temperature, thus be conducive to
Form plasma.And raise with temperature, acutely, collision frequency increases Particles Moving, is conducive to igniting and heating plasma,
Improve ionization degree.And Microwave Power Tubes 1008, for the absorption of microwave energy, decrease the energy being reflected back Microwave Power Tubes, subtract
Lack the energy of Microwave Power Tubes shaping piece absorption, greatly reduced the operating temperature of Microwave Power Tubes 1002, extend it
Service life, reduces use cost.
The present invention provides a kind of new mode of heating, adds resistant to elevated temperatures microwave absorbing material, microwave inside reaction tube
Absorbing material absorbs the unabsorbed remaining major part microwave energy of combustion mixture, and is converted into heat energy；Microwave absorbing material
The heat energy producing, to heat combustion mixture, makes preheating of fuel-air mixture heat up.Combustion mixture reaction temperature raises, and increased
The heat movement speed of particle and collision frequency, not only can reduce the required breakdown field strength of igniting, and increased reaction
Chain, improves the rate of climb of ionization degree and ionization degree, accelerates air mixture from gaseous state to the excessive speed of plasma final state,
Reduce transient process and the time that microwave plasma reformer starts, improve the microwave energy absorption in microwave reformer and heating
Efficiency, thus improving reaction rate, energy saving.Microwave absorbing material achieves conversion transfer and the profit of remaining microwave energy
With.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in description and embodiment
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Realize other modification, therefore under the general concept being limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (10)
1. a kind of vehicle-carried microwave reformer combustion mixture heater is it is characterised in that include
Reaction chamber, its bottom surface is provided with air mixture air inlet；
Microwave Power Tubes, it gos deep into inside reaction chamber, and described Microwave Power Tubes can be to described reaction intracavity transmitting microwave；
Microwave plasma reaction tube, it is arranged on the very big area of described reaction chamber center electric field intensity, described microwave plasma
Reaction tube is connected with described air inlet, is connected with air mixture in described microwave plasma reaction tube；
Discharge ignition apparatus, it inserts inside described microwave plasma reaction tube, and described discharge ignition apparatus can be in microwave
Under electromagnetic field effect, electric discharge is thus puncture the air mixture in described microwave plasma reaction tube；
Microwave power absorber, it is arranged inside described microwave plasma reaction tube, can absorb microwave energy
Heating air mixture.
2. vehicle-carried microwave reformer combustion mixture heater according to claim 1 is it is characterised in that described microwave
Plasma reaction pipe is quartz ampoule, earthenware or fiber pipe.
3. vehicle-carried microwave reformer combustion mixture heater according to claim 1 and 2 is it is characterised in that described
Microwave plasma reaction tube is spiral type.
4. vehicle-carried microwave reformer combustion mixture heater according to claim 3 is it is characterised in that described microwave
Power absorption device is made up of a series of little ball of helical pattern or spiral circle cylindricality solid tubes.
5. vehicle-carried microwave reformer combustion mixture heater according to claim 3 is it is characterised in that described microwave
Power absorption device is helical solid tubes.
6. vehicle-carried microwave reformer combustion mixture heater according to claim 5 is it is characterised in that described microwave
Power absorption equipment material is ferrite or ceramic base or alumina base.
7. vehicle-carried microwave reformer combustion mixture heater according to claim 1 is it is characterised in that described electric discharge
Igniter is made up of a wire coil carrying opening, and it is provided with two free ends, and tool is made in described two free end front portions
Have the cone of tip, and two tips be mutually close, described two free ends insertion microwave plasma reaction tubes internal and with mixed
Close combustion gas to contact, the part metals in described microwave plasma reaction tube are inserted in described microwave electromagnetic field induction discharge loop
Layer is exposed, and is not inserted into part and is surrounded by resistant to elevated temperatures insulating barrier.
8. vehicle-carried microwave reformer combustion mixture heater according to claim 1 is it is characterised in that described electric discharge
Igniter include two by metal material make tool cuspidated igniting reflection pin and with the igniting reflection reflection pin that is connected of pin
Bolt, the tip of described two igniting reflection pin relatively, by adjust reflection pin bolt adjustment two igniting reflection pin most advanced and sophisticated away from
From.
9. vehicle-carried microwave reformer combustion mixture heater according to claim 1 is it is characterised in that described reaction
Chamber is alternating share.
10. the vehicle-carried microwave reformer combustion mixture heater according to any one of claim 1,2,4,5,7,8,
It is characterized in that, also include lid, described upper lid is arranged at the top of described reaction chamber, described Microwave Power Tubes and described upper lid
Mutually fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510061534.XA CN104675582B (en) | 2015-02-05 | 2015-02-05 | Combustible mixed gas heating device for vehicle-mounted microwave reformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510061534.XA CN104675582B (en) | 2015-02-05 | 2015-02-05 | Combustible mixed gas heating device for vehicle-mounted microwave reformer |
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| CN104675582A CN104675582A (en) | 2015-06-03 |
| CN104675582B true CN104675582B (en) | 2017-01-18 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105570680A (en) * | 2015-12-22 | 2016-05-11 | 重庆市高新技术产业开发区潞翔能源技术有限公司 | Apparatus for quickening natural gas desorption based on ANG (adsorbed natural gas) technology |
| CN106276792B (en) * | 2016-10-09 | 2018-07-10 | 吉林大学 | A kind of microwave plasma reformer |
| CN106438112A (en) * | 2016-10-09 | 2017-02-22 | 吉林大学 | Vehicle-mounted online reforming catalysis and hydrogen production device |
| CN110064353A (en) * | 2019-06-17 | 2019-07-30 | 深圳市弘玮环境技术有限公司 | Coil microwave reactor |
| CN112439375B (en) * | 2020-11-06 | 2022-06-07 | 天津全和诚科技有限责任公司 | Coil pipe type microwave reactor |
| GB202112059D0 (en) * | 2021-08-23 | 2021-10-06 | Equipmake Ltd | An air treatment device |
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| JP4876217B2 (en) * | 2005-09-20 | 2012-02-15 | イマジニアリング株式会社 | Ignition system, internal combustion engine |
| US20090146042A1 (en) * | 2007-12-05 | 2009-06-11 | Jan Ihle | Mold comprising a ptc-ceramic |
| KR101012345B1 (en) * | 2008-08-26 | 2011-02-09 | 포항공과대학교 산학협력단 | Portable low power consumption microwave plasma generator |
| GB2501691B (en) * | 2012-05-01 | 2019-02-13 | Mcmahon Richard | Improved Energy Conversion and Associated Apparatus |
| CN103423061B (en) * | 2013-08-19 | 2016-05-18 | 同济大学 | Extrahigh energy spark discharge system |
| CN204493025U (en) * | 2015-02-05 | 2015-07-22 | 吉林大学 | Vehicle-carried microwave reformer inflammable mixture heating equipment |
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