CN203814033U - Low-temperature plasma generating device - Google Patents
Low-temperature plasma generating device Download PDFInfo
- Publication number
- CN203814033U CN203814033U CN201420120943.3U CN201420120943U CN203814033U CN 203814033 U CN203814033 U CN 203814033U CN 201420120943 U CN201420120943 U CN 201420120943U CN 203814033 U CN203814033 U CN 203814033U
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- Prior art keywords
- corona tube
- corona
- reaction chamber
- electric discharge
- fine hair
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 64
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 239000007769 metal material Substances 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 150000003254 radicals Chemical class 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 239000002912 waste gas Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 239000011149 active material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model relates to the industrial organic exhaust gas purification technology, and aims to provide a low-temperature plasma generating device. A reactor of the device comprises a corona tube support, insulators, an upper baffle, and a lower baffle connected in sequence, n plasma reaction chambers are arranged in parallel, a shell of each reaction chamber is hollow and cylindrical, corona tubes and the shells of the reaction chambers are coaxial, a plurality of discharge fluff made of metal are uniformly distributed on an outer wall of each corona tube in a spiral step manner, inward extending lines of the discharge fluff all pass through the axes of the corona tubes, the corona tube support is provided with support columns arranged downwardly and vertically, the support columns are sleeved by the corona tubes, and the bottoms of the corona tubes are provided with rain-proof caps. According to the device, high-activity substances such as high-energy electrons, ions, atoms in the excitation state, and free radical particles etc. are increased by 35% under the basis of the reactor with equal scale, the reaction space is effectively increased; the probability of the breakdown of a positive electrode and a negative electrode is greatly reduced due to the adoption of fluff-shaped electrodes; and the energy consumption is greatly reduced.
Description
Technical field
The utility model relates to industrial organic waste-gas purification technology, a kind of low temperature plasma generating means that particularly volatile organic compounds and foul gas purify.
Background technology
Low temperature plasma is called again non-equilibrium plasma, is material the 4th state after solid-state, liquid, gaseous state.Low temperature plasma is usually produced atom and the contour active material of free radical particle of a large amount of high energy electrons, ion, excitation state in waste gas purification process by gas discharge, these material bombardment organic exhaust gas molecule or foul gas molecules, interrupt its intrinsic chemical key, short its degraded generates CO
2and H
2o, thus reach the object of purification; The application of this technology break through the constraint that in the past carrys out decomposing pollutant by chemical reaction and many chemical reaction conditions.
Low-temperature plasma can be divided into dielectric barrier discharge (DBD), corona discharge pulse, creeping discharge etc. according to the difference of discharge type; Can be divided into pin format, line format, flat, line cartridge type etc. according to the difference of discharge electrode structure.
With regard to corona discharge: theoretically, corona discharge is between the two poles of the earth, producing between obvious corona zone and do not producing electric spark, such discharge mode is had relatively high expectations to the axiality between device interior electrode, and the accuracy of manufacture to equipment and installation accuracy require also higher; Even if manufacture and installation accuracy reaches requirement, when two inter-electrode voltages occur when unstable, also can producing Spark Discharges once in a while.Show according to experimental data, spark discharge can affect the handling rate of pollutant; Main is when in organic exhaust gas to be clean or foul gas, contain higher concentration fuel gas time can cause great potential safety hazard.
In addition the also following shortcoming of ubiquity of existing products in markets: effective reaction space is little; Electrode easily breakdown probability is high; Fire savety is poor.
Utility model content
Problem to be solved in the utility model is, overcomes low temperature plasma generating means in prior art and produce the not enough problem of corona discharge poor stability, and a kind of improved low temperature plasma generating means is provided.
For technical solution problem, solution of the present utility model is:
A kind of low temperature plasma generating means is provided, comprises reactor and power supply; Described reactor comprises successively the corona tube support, insulator, overhead gage, plasm reaction cavity and the lower baffle plate that connect, and plasm reaction cavity has n and be arranged in parallel, and n is greater than 2 natural number;
Described plasm reaction cavity comprises the corona tube and the reaction chamber shell that are corrosion resistant metal material; Reaction chamber shell is hollow cylindrical, and its upper end outer rim is connected with overhead gage is seamless, and lower end outer rim is connected with lower baffle plate is seamless;
Corona tube is coaxial with reaction chamber shell, and cavity is between the two reaction chamber, makes the cross section of plasm reaction cavity be concentric structure; On the outer wall of corona tube, be spiral step shape and be uniformly distributed the electric discharge fine hair of some metal materials, the inside extended line of electric discharge fine hair is all by the axis of corona tube;
The corona tube of corrosion resistant metal material props up and is erected on overhead gage, and corona tube support has n support column that inserts respectively vertically downward reaction chamber shell, and each corona tube is sheathed on respectively on support column, and corona tube bottom is provided with rainhat;
Described support column, corona tube, rainhat, electric discharge fine hair all keep spacing not contact mutually with reaction chamber shell, and mutually do not contact between electric discharge fine hair.
Improve as one, described power supply is made up of pulse width modulator and high pressure generator; Wherein:
The input voltage of pulse width modulator is 220V～300V, and frequency conversion scope is 20KHz～100KHz;
The low-pressure end of high pressure generator is connected to pulse width modulator with a live wire and a zero line; Its high-pressure side is the ac high-voltage output of 6000V～20000V, is connected to respectively described corona tube and reaction chamber shell.
Improve as one, described electric discharge fine hair is the spicule of chrome-nickel material.
Improve as one, the n of a described corona tube support support column is latticed layout, makes to keep uniform distances between each adjacent plasm reaction cavity; Corona tube support is realized being fixedly connected with between overhead gage by being arranged at its bolt of four jiaos and insulator.
Improve as one, described rainhat is the rainhat of corrosion resistant metal material, semicircular in shape, and the lower transverse plane of its minimum point and reaction chamber shell is tangent; Rainhat does not contact mutually with electric discharge fine hair.
Improve as one, the length of described electric discharge fine hair is 0.5～1cm; The spacing of electric discharge fine hair and reaction chamber shell is 0.5～2cm.
Compared with prior art: the beneficial effects of the utility model are:
1, atom and the contour active material of free radical particle of the high energy electron of generation, ion, excitation state improve 35% on the basis of same size reactor;
2, compared with traditional tubular type corona discharge pattern, effective reaction space has increased 1.5 times;
3, owing to adopting fine hair shape shape electrode, greatly reduce the breakdown probability of positive and negative electrode;
4, owing to having increased the generation of effective reaction space and raising high energy electron, ion, excited atom and the contour active material of free radical particle, energy consumption is by original 1.5Wh/m
3be reduced to 0.5Wh/m
3.
Brief description of the drawings
Below in conjunction with accompanying drawing and example, the utility model is further illustrated.
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A profile of Fig. 1.
Fig. 4 is plasm reaction cavity schematic diagram.
Fig. 5 is the B-B profile of Fig. 4.
Fig. 6 is the cross-sectional view of plasm reaction cavity.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Low temperature plasma generating means in the utility model, comprises reactor and power supply; Described reactor comprises successively the corona tube support 1, insulator 8, overhead gage 5, plasm reaction cavity and the lower baffle plate 6 that connect, and plasm reaction cavity has n and be arranged in parallel, and n is greater than 2 natural number;
Plasm reaction cavity comprises the corona tube 2 and the reaction chamber shell 4 that are corrosion resistant metal material; Reaction chamber shell 4 is hollow cylindrical, and its upper end outer rim is connected with overhead gage 5 is seamless, and lower end outer rim is connected with lower baffle plate 6 is seamless;
Corona tube 2 is coaxial with reaction chamber shell 4, and cavity is between the two reaction chamber, makes the cross section of plasm reaction cavity be concentric structure; On the outer wall of corona tube 2, be spiral step shape and be uniformly distributed the electric discharge fine hair 3 of some metal materials (optional chrome-nickel material), the inside extended line of electric discharge fine hair 3 is all by the axis of corona tube 2; The length of electric discharge fine hair 3 is 0.5～1cm; Electric discharge fine hair 3 is 0.5～2cm with the spacing of reaction chamber shell 4.
The corona tube support 1 of corrosion resistant metal material is located on overhead gage 5,
Corona tube support 1(corrosion resistant metal material) there is n support column (corrosion resistant metal material) that inserts respectively vertically downward reaction chamber shell, support column is latticed layout, makes to keep uniform distances between each adjacent plasm reaction cavity; Corona tube support 1 is realized being fixedly connected with between overhead gage 5 by being arranged at its bolt of four jiaos and insulator 8.Each corona tube 2 is sheathed on respectively on support column, and corona tube 2 bottoms are provided with rainhat 7;
Described support column, corona tube 2, rainhat 7, electric discharge fine hair 3 all keep spacing not contact mutually with reaction chamber shell 4, and mutually do not contact between electric discharge fine hair 3.Rainhat 7 is corrosion resistant metal materials, semicircular in shape, and the lower transverse plane of its minimum point and reaction chamber shell 4 is tangent; Rainhat 7 does not contact mutually with electric discharge fine hair 3.
Power supply is made up of pulse width modulator and high pressure generator; Wherein: the input voltage of pulse width modulator is 220V～300V, frequency conversion scope is 20KHz～100KHz; The low-pressure end of high pressure generator is connected to pulse width modulator with a live wire and a zero line; Its high-pressure side is the ac high-voltage output of 6000V～20000V, is connected to respectively described corona tube 2 and reaction chamber shell 4.
Using method of the present utility model is:
By outside induced draft fan, waste gas is introduced to low temperature plasma generating means in the utility model, the reaction chamber lower end restricting at lower baffle plate 6, restrained the passing through between corona tube 2 and reaction chamber shell 4 in plasm reaction cavity from bottom to top of waste gas, under the effect of the high voltagehigh frequency electric field being produced by power supply, the inner generation of reaction chamber low-temperature plasma figure.Under this state, reaction chamber inside is full of a large amount of high energy electrons, ion, excited atom and the contour active material of free radical particle, pollutant in these high activity materials and waste gas carries out the physical-chemical reaction of series of complex, the chemical bond of pollutant is opened and oxidation Decomposition pollutant, reached the object of removal.Discharge the reaction chamber upper end that after reaction, gas is restricted by overhead gage 5.
Through experimental verification, device in the utility model is for the exhaust-gas treatment of rubber industry, compare with other traditional exhaust gas treatment technologies, its operating cost is only original 1/5th, other are processed compared with the low-temperature plasma device of rubber waste gas with market, and operating cost is only also 50% of other low-temperature plasma devices; And assay is after treatment known, the treatment effeciency of device has improved 10%～20%.
Claims (6)
1. a low temperature plasma generating means, comprises reactor and power supply; It is characterized in that, described reactor comprises successively the corona tube support, insulator, overhead gage, plasm reaction cavity and the lower baffle plate that connect, and plasm reaction cavity has n and be arranged in parallel, and n is greater than 2 natural number;
Described plasm reaction cavity comprises the corona tube and the reaction chamber shell that are corrosion resistant metal material; Reaction chamber shell is hollow cylindrical, and its upper end outer rim is connected with overhead gage is seamless, and lower end outer rim is connected with lower baffle plate is seamless;
Corona tube is coaxial with reaction chamber shell, and cavity is between the two reaction chamber, makes the cross section of plasm reaction cavity be concentric structure; On the outer wall of corona tube, be spiral step shape and be uniformly distributed the electric discharge fine hair of some metal materials, the inside extended line of electric discharge fine hair is all by the axis of corona tube;
The corona tube of corrosion resistant metal material props up and is erected on overhead gage, and corona tube support has n support column that inserts respectively vertically downward reaction chamber shell, and each corona tube is sheathed on respectively on support column, and corona tube bottom is provided with rainhat;
Described support column, corona tube, rainhat, electric discharge fine hair all keep spacing not contact mutually with reaction chamber shell, and mutually do not contact between electric discharge fine hair.
2. device according to claim 1, is characterized in that, described power supply is made up of pulse width modulator and high pressure generator; Wherein:
The input voltage of pulse width modulator is 220V～300V, and frequency conversion scope is 20KHz～100KHz;
The low-pressure end of high pressure generator is connected to pulse width modulator with a live wire and a zero line; Its high-pressure side is the ac high-voltage output of 6000V～20000V, is connected to respectively described corona tube and reaction chamber shell.
3. device according to claim 1, described electric discharge fine hair is the spicule of chrome-nickel material.
4. according to the device described in claim 1-3 any one, it is characterized in that, the n of a described corona tube support support column is latticed layout, makes to keep uniform distances between each adjacent plasm reaction cavity; Corona tube support is realized being fixedly connected with between overhead gage by being arranged at its bolt of four jiaos and insulator.
5. according to the device described in claim 1-3 any one, it is characterized in that, described rainhat is the rainhat of corrosion resistant metal material, semicircular in shape, and the lower transverse plane of its minimum point and reaction chamber shell is tangent; Rainhat does not contact mutually with electric discharge fine hair.
6. according to the device described in claim 1-3 any one, it is characterized in that, the length of described electric discharge fine hair is 0.5～1cm; The spacing of electric discharge fine hair and reaction chamber shell is 0.5～2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420120943.3U CN203814033U (en) | 2014-03-18 | 2014-03-18 | Low-temperature plasma generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420120943.3U CN203814033U (en) | 2014-03-18 | 2014-03-18 | Low-temperature plasma generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203814033U true CN203814033U (en) | 2014-09-03 |
Family
ID=51452720
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420120943.3U Expired - Fee Related CN203814033U (en) | 2014-03-18 | 2014-03-18 | Low-temperature plasma generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203814033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906334A (en) * | 2014-03-18 | 2014-07-02 | 浙江菲尔特环保工程有限公司 | Low-temperature plasma generating device |
-
2014
- 2014-03-18 CN CN201420120943.3U patent/CN203814033U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906334A (en) * | 2014-03-18 | 2014-07-02 | 浙江菲尔特环保工程有限公司 | Low-temperature plasma generating device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |