CN112802731B - Material circulation modification device based on dielectric barrier discharge plasma - Google Patents
Material circulation modification device based on dielectric barrier discharge plasma Download PDFInfo
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- CN112802731B CN112802731B CN202011295135.7A CN202011295135A CN112802731B CN 112802731 B CN112802731 B CN 112802731B CN 202011295135 A CN202011295135 A CN 202011295135A CN 112802731 B CN112802731 B CN 112802731B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32348—Dielectric barrier discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
- H01J37/32449—Gas control, e.g. control of the gas flow
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Abstract
The invention discloses a material circulation modification device based on dielectric barrier discharge plasma, which comprises a working gas generator, a plasma generator and a dielectric barrier discharge mechanism connected between the working gas generator and the plasma generator. The device structure is reliable, and the inhomogeneous problem of modification effect when effectual solution material is modified for a long time realizes the separation and the new gas entering of waste gas and material through circulating line, when making the modification more even, can control the modification time at will, realizes the long-time even processing of material.
Description
Technical Field
The invention relates to the technical field of plasmas, in particular to a material circulation modification device based on dielectric barrier discharge plasmas.
Background
Since the advent of plasmology, the research on plasma has been driven by four aspects: the research of gas discharge, the research of celestial body and space physics, the research of controlled thermonuclear fusion and the application of low-temperature plasma technology. In recent years, plasma technology is beginning to develop towards the field of low-temperature plasma, wherein gas discharge is one of effective ways for generating plasma, and common gas discharge forms are mainly glow discharge, corona discharge and dielectric barrier discharge. In general, a high voltage part and a low voltage part are arranged on a discharge device in the dielectric barrier discharge, and a low voltage end can be grounded. The principle is that an insulating medium is arranged in an area between the high end and the low end, and the high end and the low end form the medium to discharge after a circuit is connected, so that low-temperature plasma with large area and high energy density is generated in the same channel.
The surface of the material can be treated by dielectric barrier discharge, active groups are introduced to the surface of the material or the surface of the material is coated by a plasma polymer film, so that the surface of the inorganic nano particle generates structural change beneficial to substrate compatibility, and the purpose is to improve the interface state, improve the adhesion of inorganic powder and the substrate and improve the mechanical property of the material. The plasma high-energy particles generated by dielectric barrier discharge are mainly used for bombarding the surface of the material, and the originally rough surface becomes gradually flat and smooth without influencing the structure and the property of the surface of the material. Meanwhile, a part of free radicals with organic functional groups can be attached to the surface of the material, so that the surface of the material is endowed with performances such as hydrophilicity, wear resistance, weather resistance and the like.
In the existing dielectric barrier discharge devices, plate-shaped electrodes are mostly adopted, because materials cannot be uniformly dispersed on a barrier medium, the thickness cannot be effectively controlled, the modification effect of the same batch of modified materials is greatly different, the uniformity and the integrity of the material treatment effect cannot be ensured, and great inconvenience is brought to the subsequent continuous use of the modified materials.
Disclosure of Invention
The invention aims to provide a material circulation modification device based on dielectric barrier discharge plasma, and aims to solve the problem that the existing dielectric barrier discharge device is poor in treatment effect on modified materials.
The technical scheme for solving the technical problems is as follows: a material circulation modification device based on dielectric barrier discharge plasma comprises a working gas generator, a plasma generator and a dielectric barrier discharge mechanism connected between the working gas generator and the plasma generator;
the dielectric barrier discharge mechanism comprises an atmosphere bin, a waste gas and material separator, a spiral feeder and a dielectric barrier discharge tube, wherein the waste gas and material separator is arranged in the atmosphere bin, the spiral feeder is arranged in the atmosphere bin, the dielectric barrier discharge tube is arranged between the waste gas and material separator and a circulating pipeline of the spiral feeder, a conductive graphite column is arranged in the dielectric barrier discharge tube, a metal electrode is arranged at the upper end of the conductive graphite column, an external copper mesh is arranged on the outer wall of the dielectric barrier discharge tube, an air distribution plate is arranged at the bottom end of the dielectric barrier discharge tube, a working gas generator is communicated with the dielectric barrier discharge tube through an air tube, and a plasma generator is in communication connection with the metal electrode and the external copper mesh through a conducting wire.
The beneficial effects of adopting the above technical scheme are: through dielectric barrier discharge tube production plasma, adopt excellent bucket formula discharge electrode structure, discharge degree of consistency and discharge area have been increased effectively, install the air distribution plate in the air distribution plate discharge device bottom the discharge tube through dielectric barrier, through adjusting aperture and porosity, when making material and modified gas mix more even, can make the material have fluidic partial characteristic, material mobility is better, and then guarantee the homogeneity of material modification, the inhomogeneous problem of modification effect when solving the material and modifying for a long time, realize waste gas and material's separation and new gas entering through the circulating line, when making the modification more even, can control modification time at will, realize the long-time uniform treatment of material.
Further, the waste gas and material separator comprises a separation tank with a feeding hole and a discharging hole, an anti-sticking plate which is obliquely arranged in the separation tank and is positioned below the feeding hole, an ultra-efficient air filter screen which is arranged in the separation tank and is far away from one end of the feeding hole and a sealing plate which is arranged at the feeding hole of the separation tank, wherein the feeding hole is communicated with the upper end of the dielectric barrier discharge tube through a feeding pipeline.
The beneficial effects of adopting the above technical scheme are: through waste gas and material separator, utilize the modified gas air current, make the gaseous and the modified material separation of ionization, prevent gas pollution, avoid producing impurity gas and influence modification effect, simultaneously, antiseized coating plate has collects the material effect, reduces the material and adheres to, and afterbody super high efficiency airstrainer is removable setting, and use cost is low, simple structure.
Further, the discharge port of the waste gas and material separator is connected with a material collector through a pipeline, an air inlet pipe is arranged at the upper end of the material collector, a material discharging pipe is arranged at the lower end of the material collector and communicated with the working gas generator, and the material discharging pipe is communicated with the circulating pipeline.
The beneficial effects of adopting the above technical scheme are: the structure of the material collector is arranged to realize the uniform feeding of the material and the uniform mixing of the material and the modified gas, thereby effectively reducing the material agglomeration.
Further, the working gas generator comprises at least one high-pressure gas cylinder, a high-pressure gas pipe connected to the high-pressure gas cylinder and a gas mass flow controller arranged on the high-pressure gas pipe, wherein the end part of the high-pressure gas pipe is respectively communicated with a four-way pipe arranged at the lower end of the dielectric barrier discharge pipe, a circulating pipeline of the spiral feeder and an air inlet pipe of the collector.
The beneficial effects of adopting the above technical scheme are: the gas in the high-pressure gas cylinder is determined according to the modification requirement and comprises compressed air, high-purity argon, high-purity nitrogen, high-purity ammonia, high-purity carbon dioxide and the like. The gas generated by the high-pressure gas cylinder is conveyed into the spiral feeder, the material collector and the dielectric barrier discharge tube by the high-pressure gas pipe, so that a reliable required gas environment is provided. And the required gas flow is controlled by the gas mass flow controller, so that the modification effect is improved.
Further, the plasma generator comprises a high-voltage alternating current power supply and a high-voltage transformer, wherein the high-voltage alternating current power supply and the high-voltage transformer are connected with the metal electrode at the upper end of the conductive graphite column and the external copper mesh through wires.
The beneficial effects of adopting the above technical scheme are: the high-voltage alternating current power supply and the high-voltage transformer are used for providing a plasma power supply with adjustable frequency and voltage. And the grounding electrode forms a grounding electrode through the copper plate and the grounding wire, so that high-voltage electricity is prevented from entering an external circuit from the metal atmosphere bin.
Further, the upper portion in atmosphere storehouse is connected with pressure regulating mechanism, pressure regulating mechanism includes the vacuum pump, connects first pressure regulating pipeline and the second pressure regulating pipeline on the vacuum pump and connects the trunk line at first pressure regulating pipeline tip and second pressure regulating pipeline tip, is provided with the check valve on the trunk line, is provided with gas mass flow controller on the second pressure regulating pipeline, and all is provided with the ball valve on first pressure regulating pipeline and the second pressure regulating pipeline.
The beneficial effects of adopting the above technical scheme are: the air pressure in the atmosphere bin is adjusted through a vacuum pump, various valves and a gas mass flow controller, and the exhaust gas and the maintenance of the air pressure are used through a check valve. Through opening the ball valve on the first pressure regulating pipeline, close the ball valve on the second pressure regulating pipeline, will the atmosphere storehouse evacuation earlier, the ball valve on the first pressure regulating pipeline opens the ball valve on the second pressure regulating pipeline, through the gas mass flow controller control atmosphere storehouse rate of giving vent to anger, reach the atmosphere storehouse and admit air on one side, when giving vent to anger on one side, can maintain required atmospheric pressure environment.
Furthermore, a support frame is arranged at the lower end of the dielectric barrier discharge tube, and an insulating rubber ring is arranged between the support frame and the dielectric barrier discharge tube.
The beneficial effects of adopting the above technical scheme are: the reliable stability of dielectric barrier discharge tube installation is improved through the support frame, prevents that the plasma power supply from producing leakage current through insulating rubber circle.
Furthermore, the upper part and the lower part of the dielectric barrier discharge tube are both provided with conical cavities, the conical cavity positioned at the upper part of the dielectric barrier discharge tube is communicated with a feeding pipeline of the waste gas and material separator, and the conical cavity positioned at the lower part of the dielectric barrier discharge tube is communicated with a four-way pipe at the lower end of the dielectric barrier discharge tube.
The beneficial effects of adopting the above technical scheme are: through the setting of toper cavity, increase gaseous velocity of flow, improve holistic work efficiency.
Further, the aperture on the air distribution plate is larger than the diameter of the modified material, and the aperture ratio of the air distribution plate is 5%.
The beneficial effects of adopting the above technical scheme are: the air distribution plate is used for improving the air speed of the air inlet at the lower part and realizing fluidization of materials, the aperture of the air distribution plate is larger than the diameter of the modified material, the aperture ratio of the air distribution plate is 5%, the best fluidization effect of the modified material can be realized, and the good modification effect is ensured.
Furthermore, the material collector is a miniature fine aggregate stirrer.
The beneficial effects of adopting the above technical scheme are: the uniformity of the material is improved by adopting a miniature fine aggregate stirrer, and the agglomeration of the modified material is reduced.
The invention has the following beneficial effects: the material circulation modification device based on the dielectric barrier discharge plasma provided by the invention has the advantages that the structure is reliable, the service performance is good, the plasma is generated through the dielectric barrier discharge tube, the rod-barrel type discharge electrode structure is adopted, the discharge uniformity and the discharge area are effectively increased, the air distribution plate is arranged in the air distribution plate discharge device at the bottom of the dielectric barrier discharge tube, the material and the modified gas are mixed more uniformly by adjusting the aperture and the aperture ratio, the material has partial characteristics of fluid, the material flowability is better, the uniformity of material modification is further ensured, the problem of non-uniform modification effect of the material during long-time modification is solved, the separation of waste gas and the material and the entering of new gas are realized through a circulation pipeline, the modification is more uniform, the modification time can be controlled at will, and the long-time uniform treatment of the material is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the waste gas and material separator of the present invention;
the reference numerals shown in fig. 1 to 2 are respectively expressed as: 1-working gas generator, 2-plasma generator, 3-dielectric barrier discharge mechanism, 30-atmosphere bin, 31-waste gas and material separator, 32-screw feeder, 33-circulation pipeline, 34-dielectric barrier discharge tube, 35-conductive graphite column, 36-external copper net, 37-air distribution plate, 310-inlet, 311-outlet, 312-separation tank, 313-anti-sticking coating plate, 314-sealing plate, 315-inlet pipeline, 316-ultra-efficient air filter screen, 4-collector, 5-inlet pipe, 6-discharge pipe, 10-high pressure gas cylinder, 11-high pressure gas pipe, 12-gas mass flow controller, 20-high voltage alternating current power supply, 21-high voltage transformer, 301-vacuum pump, 302-first pressure regulating pipeline, 303-second pressure regulating pipeline, 304-main pipeline, 305-check valve, 38-support frame, 39-insulating rubber ring, 340-conical cavity.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a material cycle modification device based on dielectric barrier discharge plasma comprises a working gas generator 1, a plasma generator 2 and a dielectric barrier discharge mechanism 3 connected between the working gas generator 1 and the plasma generator 2. The dielectric barrier discharge mechanism 3 comprises an atmosphere bin 30, a waste gas and material separator 31 arranged in the atmosphere bin 30, a spiral feeder 32 arranged in the atmosphere bin 30 and a dielectric barrier discharge tube 34 arranged between the waste gas and material separator 31 and a circulating pipeline 33 of the spiral feeder 32, a conductive graphite column 35 is arranged in the dielectric barrier discharge tube 34, a metal electrode is arranged at the upper end of the conductive graphite column 35, an external copper mesh 36 is arranged on the outer wall of the dielectric barrier discharge tube 34, an air distribution plate 37 is arranged at the bottom end of the dielectric barrier discharge tube 34, the working gas generator 1 is communicated with the dielectric barrier discharge tube 34 through an air tube, and the plasma generator 2 is communicated with the metal electrode and the external copper mesh 36 through a conducting wire.
The middle part of the dielectric barrier discharge tube 34 is a cylinder, the central rod-shaped area is filled with conductive graphite to form a conductive graphite column 35, the outer copper mesh 36 is a fine copper wire mesh, and the conductive graphite column 35 and the outer copper mesh 36 form a discharge electrode. Through dielectric barrier discharge tube 34 production plasma, adopt excellent bucket formula discharge electrode structure, discharge degree of consistency and discharge area have been increased effectively, install air distribution plate 37 in the air distribution plate 37 discharge device of discharge tube 34 bottom through dielectric barrier, through adjusting aperture and aperture ratio, when making material and modified gas mix more evenly, can make the material have fluidic partial characteristic, material mobility is better, and then guarantee the homogeneity of material modification, the inhomogeneous problem of modification effect when solving the material and modifying for a long time, realize waste gas and material's separation and new gas entering through circulating line 33, when making the modification more even, can control modification time at will, realize the long-time uniform processing of material.
The air distribution plate 37 is used for improving the air speed of the air inlet at the lower part and realizing fluidization of materials, the aperture of the air distribution plate is larger than the diameter of the modified material, the aperture ratio of the air distribution plate is 5%, the best fluidization effect of the modified material can be realized, and the good modification effect is ensured. The fluidized solid material passes through arc plasma generated by the conductive graphite column 35 and the external copper mesh 36, so that the purpose of primary modification of the material is achieved. The material after the primary modification flows upward into the exhaust gas and material separator 31 for separation of the modified exhaust gas from the modified material. The modified material is remixed with the modified gas through the collector 4 and enters the circulating pipeline 33 again, and enters the dielectric barrier discharge tube 34 for secondary modification.
As shown in fig. 2, the exhaust gas and material separator 31 includes a separation tank 312 having an inlet opening 310 and an outlet opening 311, an anti-adhesive sheet 313 obliquely disposed in the separation tank 312 below the inlet opening 310, an ultra-efficient airstrainer 316 disposed in the separation tank 312 at an end away from the inlet opening 310, and a sealing plate 314 disposed at the inlet opening 310 of the separation tank 312, the inlet opening 310 communicating with an upper end of the dielectric barrier discharge tube 34 through an inlet duct 315. Through waste gas and material separator 31, utilize the modified gas air current, make the gaseous and the modified material separation of ionization, prevent gas pollution, avoid producing impurity gas and influence modification effect, simultaneously, antiseized coating plate 313 has the material effect of compiling, reduces the material and adheres to, and tail portion super high efficiency airstrainer 316 is removable setting, and use cost is low, simple structure. The filtering efficiency of the ultra-efficient air filter screen 316 for dust particles of 0.1-0.2 mu m, smoke, microorganisms and the like reaches over 99.999 percent, and the filtering effect is improved.
The discharge port 311 of the waste gas and material separator 31 is connected to a material collector 4 through a pipe, an intake pipe 5 is provided at the upper end of the material collector 4, a discharge pipe 6 is provided at the lower end of the material collector 4, the intake pipe 5 is communicated with the working gas generator 1, and the discharge pipe 6 is communicated with the circulation pipe 33. The material is uniformly fed and uniformly mixed with the modified gas through the structural arrangement of the material collector 4, so that the material agglomeration is effectively reduced.
The working gas generator 1 comprises at least one high-pressure gas cylinder 10, a high-pressure gas pipe 11 connected to the high-pressure gas cylinder 10 and a gas mass flow controller 12 arranged on the high-pressure gas pipe 11, wherein the end part of the high-pressure gas pipe 11 is respectively communicated with a four-way pipe arranged at the lower end of a dielectric barrier discharge pipe 34, a circulating pipeline 33 of a spiral feeder 32 and an air inlet pipe 5 of a collector 4. The gas in the high-pressure gas cylinder 10 is determined according to modification requirements and comprises compressed air, high-purity argon, high-purity nitrogen, high-purity ammonia, high-purity carbon dioxide and the like. The gas generated by the high-pressure gas cylinder 10 is delivered from the high-pressure gas pipe 11 to the screw feeder 32, the collector 4 and the dielectric barrier discharge tube 34, and a reliable desired gas environment is provided. And the required gas flow is controlled by the gas mass flow controller 12, so that the modification effect is improved.
The plasma generator 2 comprises a high-voltage alternating current power supply 20 and a high-voltage transformer 21, wherein the high-voltage alternating current power supply 20 and the high-voltage transformer 21 are connected with a metal electrode 300 at the upper end of a conductive graphite column 35 and an external copper mesh 36 through leads. A high voltage alternating current power supply 20 and a high voltage transformer 21, which are used for providing a plasma power supply with adjustable frequency and voltage. And the grounding electrode forms a grounding electrode through a copper plate and a grounding wire, so that the high-voltage electricity is prevented from entering an external circuit from the metal atmosphere bin 30.
The upper portion in atmosphere storehouse 30 is connected with pressure regulating mechanism, and pressure regulating mechanism includes vacuum pump 301, connects first pressure regulating pipeline 302 and second pressure regulating pipeline 303 on vacuum pump 301 and connects the trunk line 304 at first pressure regulating pipeline 302 tip and second pressure regulating pipeline 303 tip, is provided with check valve 305 on the trunk line 304, is provided with gas mass flow controller 12 on the second pressure regulating pipeline 303, and all is provided with the ball valve on first pressure regulating pipeline 302 and the second pressure regulating pipeline 303. The air pressure in the atmosphere chamber 30 is adjusted by the vacuum pump 301 and the respective valves and the gas mass flow controller 12, and is used for the exhaust of the exhaust gas and the maintenance of the air pressure by the check valve 305. Through opening the ball valve on the first pressure regulating pipeline 302, close the ball valve on the second pressure regulating pipeline 303, earlier with atmosphere storehouse 30 evacuation, the ball valve on the first pressure regulating pipeline 302 opens the ball valve on the second pressure regulating pipeline 303, gives vent to anger speed through gas mass flow controller 12 control atmosphere storehouse 30, reaches atmosphere storehouse 30 and admits air on one side, when giving vent to anger on one side, can maintain required atmospheric pressure environment.
A support 38 is provided at the lower end of the dielectric barrier discharge tube 34, and an insulating rubber ring 39 is provided between the support 38 and the dielectric barrier discharge tube 34. The support frame 38 improves the reliability and stability of the installation of the dielectric barrier discharge tube 34, and the insulating rubber ring prevents the plasma power supply from generating leakage current.
The upper and lower parts of the dielectric barrier discharge tube 34 are provided with a conical cavity 340, the conical cavity 340 in the upper part of the dielectric barrier discharge tube 34 is communicated with the feeding pipe 315 of the waste gas and material separator 31, and the conical cavity 340 in the lower part of the dielectric barrier discharge tube 34 is communicated with a four-way pipe at the lower end of the dielectric barrier discharge tube 34. Through the setting of toper cavity 340, increase gaseous velocity of flow improves holistic work efficiency.
The aperture of the air distribution plate 37 is larger than the diameter of the modified material, and the aperture ratio of the air distribution plate 37 is 5%. The air distribution plate 37 is used for improving the air speed of the air inlet at the lower part and realizing fluidization of materials, the aperture of the air distribution plate is larger than the diameter of the modified material, the aperture ratio of the air distribution plate is 5%, the best fluidization effect of the modified material can be realized, and the good modification effect is ensured.
The material collector 4 is a miniature fine aggregate stirrer. The uniformity of the material is improved by adopting a miniature fine aggregate stirrer, and the agglomeration of the modified material is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A material circulation modification device based on dielectric barrier discharge plasma is characterized by comprising a working gas generator (1), a plasma generator (2) and a dielectric barrier discharge mechanism (3) connected between the working gas generator (1) and the plasma generator (2);
the dielectric barrier discharge mechanism (3) comprises an atmosphere bin (30), an exhaust gas and material separator (31) arranged in the atmosphere bin (30), a screw feeder (32) arranged in the atmosphere bin (30) and a dielectric barrier discharge tube (34) arranged between the exhaust gas and material separator (31) and a circulating pipeline (33) of the screw feeder (32), a conductive graphite column (35) is arranged in the dielectric barrier discharge tube (34), the upper end of the conductive graphite column (35) is provided with a metal electrode (300), the outer wall of the dielectric barrier discharge tube (34) is provided with an external copper mesh (36), the bottom end of the dielectric barrier discharge tube (34) is provided with an air distribution plate (37), the working gas generator (1) is communicated with the dielectric barrier discharge tube (34) through a pipeline, the plasma generator (2) is in communication connection with the metal electrode (300) and the external copper mesh (36) through wires.
2. The dielectric barrier discharge plasma based material recycling modification apparatus according to claim 1, wherein the exhaust gas and material separator (31) comprises a separation tank (312) having a feeding inlet (310) and a discharging outlet (311), an anti-sticking plate (313) obliquely disposed in the separation tank (312) below the feeding inlet (310), an ultra-efficient aero-filter screen (316) disposed in the separation tank (312) at an end far from the feeding inlet (310), and a sealing plate (314) disposed at the feeding inlet (310) of the separation tank (312), wherein the feeding inlet (310) is communicated with an upper end of the dielectric barrier discharge tube (34) through a feeding pipe (315).
3. The material circulation modification device based on dielectric barrier discharge plasma according to claim 2, characterized in that the discharge port (311) of the waste gas and material separator (31) is connected with a material collector (4) through a pipeline, the upper end of the material collector (4) is provided with an air inlet pipe (5), the lower end of the material collector (4) is provided with a discharge pipe (6), the air inlet pipe (5) is communicated with the working gas generator (1), and the discharge pipe (6) is communicated with the circulation pipeline (33).
4. The recycling device for materials based on dielectric barrier discharge plasma according to claim 3, wherein said working gas generator (1) comprises at least one high pressure gas cylinder (10), a high pressure gas pipe (11) connected to said high pressure gas cylinder (10), and a gas mass flow controller (12) arranged on said high pressure gas pipe (11), the end of said high pressure gas pipe (11) is respectively communicated with a four-way pipe arranged at the lower end of the dielectric barrier discharge tube (34), the circulating pipe (33) of the screw feeder (32), and the gas inlet pipe (5) of the collector (4).
5. The material circulation modification device based on dielectric barrier discharge plasma according to claim 1, characterized in that the plasma generator (2) comprises a high voltage alternating current power supply (20) and a high voltage transformer (21), and the high voltage alternating current power supply (20) and the high voltage transformer (21) are connected with a metal electrode (300) at the upper end of a conductive graphite column (35) and an external copper mesh (36) through leads.
6. The material circulation modification device based on dielectric barrier discharge plasma according to claim 1, wherein a pressure regulating mechanism is connected to the upper part of the atmosphere bin (30), the pressure regulating mechanism comprises a vacuum pump (301), a first pressure regulating pipeline (302) and a second pressure regulating pipeline (303) which are connected to the vacuum pump (301), and a main pipeline (304) which is connected to the end parts of the first pressure regulating pipeline (302) and the second pressure regulating pipeline (303), a check valve (305) is arranged on the main pipeline (304), and a gas mass flow controller (12) is arranged on the first pressure regulating pipeline (302) or the second pressure regulating pipeline (303).
7. The dielectric barrier discharge plasma based material recycling device according to any one of claims 1 to 6, wherein a support frame (38) is provided at the lower end of the dielectric barrier discharge tube (34), and an insulating rubber ring (39) is provided between the support frame (38) and the dielectric barrier discharge tube (34).
8. The recycling apparatus for materials based on dielectric barrier discharge plasma as claimed in claim 4, wherein the dielectric barrier discharge tube (34) has a tapered cavity (340) at both upper and lower parts, the tapered cavity (340) at the upper part of the dielectric barrier discharge tube (34) is connected to the feeding pipe (315) of the waste gas and materials separator (31), and the tapered cavity (340) at the lower part of the dielectric barrier discharge tube (34) is connected to the four-way pipe at the lower end of the dielectric barrier discharge tube (34).
9. The recycling apparatus for materials based on dielectric barrier discharge plasma as claimed in claim 8, wherein the aperture of said air distributor (37) is larger than the diameter of the modified material, and the aperture ratio of said air distributor (37) is 5%.
10. The recycling apparatus for materials based on dielectric barrier discharge plasma as claimed in claim 9, wherein the collector (4) is a micro fine aggregate stirrer.
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| CN202011295135.7A CN112802731B (en) | 2020-11-18 | 2020-11-18 | Material circulation modification device based on dielectric barrier discharge plasma |
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| CN202011295135.7A CN112802731B (en) | 2020-11-18 | 2020-11-18 | Material circulation modification device based on dielectric barrier discharge plasma |
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| CN112802731B true CN112802731B (en) | 2022-01-25 |
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| FR2868964A1 (en) * | 2004-04-15 | 2005-10-21 | Robert Devidal | Treatment of volume of particles of conducting material, useful for increasing the specific surface of a material, comprises diffusing cold plasma within the entire volume of the particles |
| CN102238795A (en) * | 2010-04-28 | 2011-11-09 | 盐城豪瑞达实业有限公司 | Technology for protecting arc plasma graphite electrode from antioxidant erosion loss by inert gas |
| CN110035594A (en) * | 2019-03-18 | 2019-07-19 | 西安交通大学 | Material modification device, system and method based on dielectric barrier discharge plasma |
| CN110127605A (en) * | 2018-02-09 | 2019-08-16 | 中国石油化工股份有限公司 | The method of reaction of low temperature plasma device and decomposing hydrogen sulfide |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2868964A1 (en) * | 2004-04-15 | 2005-10-21 | Robert Devidal | Treatment of volume of particles of conducting material, useful for increasing the specific surface of a material, comprises diffusing cold plasma within the entire volume of the particles |
| CN102238795A (en) * | 2010-04-28 | 2011-11-09 | 盐城豪瑞达实业有限公司 | Technology for protecting arc plasma graphite electrode from antioxidant erosion loss by inert gas |
| CN110127605A (en) * | 2018-02-09 | 2019-08-16 | 中国石油化工股份有限公司 | The method of reaction of low temperature plasma device and decomposing hydrogen sulfide |
| CN110035594A (en) * | 2019-03-18 | 2019-07-19 | 西安交通大学 | Material modification device, system and method based on dielectric barrier discharge plasma |
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