CN210637135U - Cube-shaped electrode low temperature plasma synergistic wood fiber tail gas treatment device - Google Patents
Cube-shaped electrode low temperature plasma synergistic wood fiber tail gas treatment device Download PDFInfo
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- CN210637135U CN210637135U CN201921003920.3U CN201921003920U CN210637135U CN 210637135 U CN210637135 U CN 210637135U CN 201921003920 U CN201921003920 U CN 201921003920U CN 210637135 U CN210637135 U CN 210637135U
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- wood fiber
- plasma
- tail gas
- temperature plasma
- gas treatment
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- 229920002522 Wood fibre Polymers 0.000 title claims abstract description 24
- 239000002025 wood fiber Substances 0.000 title claims abstract description 24
- 230000002195 synergetic effect Effects 0.000 title 1
- 238000000746 purification Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 abstract description 21
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000006479 redox reaction Methods 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000013618 particulate matter Substances 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 16
- 239000005060 rubber Substances 0.000 description 16
- 238000007789 sealing Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- ODUCDPQEXGNKDN-UHFFFAOYSA-N Nitrogen oxide(NO) Natural products O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Images
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- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
本实用新型涉及一种方块形电极低温等离子体协同木纤维尾气处理装置，它是将等离子发生装置和木纤维滤芯结合到一起的装置，过滤体由耐高温聚四氟乙烯网包裹木纤维构成木纤维滤芯，等离子体发生装置采用介质阻挡放电技术，高压电极通电后，以木纤维滤芯为介质的条件下产生等离子体，该装置有两个等离子发生区，柴油机尾气进入装置内部，在第一个反应区低温等离子体与柴油机中的NOX和PM发生复杂的氧化还原反应，生成N2和CO2等无害气体，并且木纤维对颗粒物和未燃烧的油品有一定的吸附能力，未净化完的气体可继续在第二个反应区进行同样的反应，从而使净化效率大大提高。
The utility model relates to a square-shaped electrode low-temperature plasma cooperating wood fiber tail gas treatment device, which is a device combining a plasma generating device and a wood fiber filter element. Fiber filter element, the plasma generation device adopts dielectric barrier discharge technology. After the high-voltage electrode is energized, plasma is generated under the condition of wood fiber filter element as the medium. The device has two plasma generating areas. The diesel exhaust gas enters the device. The low-temperature plasma in the reaction zone has a complex redox reaction with NO X and PM in the diesel engine, generating harmless gases such as N 2 and CO 2 , and the wood fiber has a certain adsorption capacity for particulate matter and unburned oil, which is not purified. The finished gas can continue the same reaction in the second reaction zone, so that the purification efficiency is greatly improved.
Description
The technical field is as follows:
the present invention belongs to a diesel engine tail gas Nitrogen Oxide (NO)X) And a soot Particle (PM) treatment device which is arranged at the rear end of the silencer of the diesel engine close to the tail pipe and is used for treating NO in the tail gas of the diesel engineXAnd PM.
Background art:
with the rapid development of the transportation industry in China, transportation vehicles powered by diesel engines are widely applied, but the pollution of the diesel engines to the environment is also concerned by people. The tail gas of the diesel engine mainly comprises incompletely combusted oil products, carbon black particulate matters, nitrogen oxides and the like, and the traditional tail gas treatment method is not ideal for the purification effect of the diesel engine. Therefore, researchers have never abandoned the research on the purification of diesel engine exhaust gas, and the methods for purifying diesel engine exhaust gas at present include an activated carbon adsorption method, a plasma method, a catalytic oxidation method, and the like, but these methods have problems of a small purification amount, a large amount of generated by-products, low efficiency, and the like. The low-temperature plasma and wood fiber technology can well solve the problems, and meanwhile, the technology is convenient to operate and low in cost, so that the technology has a better prospect in the aspect of diesel engine exhaust gas treatment. The research is a brand-new purifying device designed on the basis of the purifying mechanism of the low-temperature plasma and wood fiber technology.
The invention content is as follows:
the square electrode low-temperature plasma and wood fiber coordinated tail gas treatment device comprises a plasma generation device and a square wood fiber filter element. The upper part of the plasma generating device fixes a high-voltage electrode plate on a fixing plate, the fixing end is connected with a lead, the lead passes through sealing rubber, then the sealing rubber is tightly attached to the upper part of the fixing plate, then the sealing rubber and the fixing plate are embedded in an upper shell 3, two square wood fiber filter elements are respectively adhered to the high-voltage electrode plate on the lower part of the plasma generating device, and then the high-voltage electrode plate adhered with wood fibers is fixed on the fixing plateOn the fixed plate, the fixed end is connected with a lead, after the lead passes through the sealing rubber, the sealing rubber is closely attached to the lower part of the fixed plate, and then the sealing rubber and the fixed plate are embedded in the lower shell 10. The square wood fiber filter element is made of wood fiber wrapped by high-temperature-resistant polytetrafluoroethylene net. After the high-voltage electrode is electrified, plasma is generated under the condition that the wood fiber filter element is used as a medium, the device is provided with two plasma generating areas, tail gas of the diesel engine enters the device, and the low-temperature plasma and NO in the diesel engine are generated in the first reaction areaXCarrying out complex oxidation-reduction reaction with PM to generate N2And CO2And the wood fiber has certain adsorption capacity to particulate matters and unburned oil products, and the gas which is not purified can continue to carry out the same reaction in a second reaction zone, so that the purification efficiency is greatly improved.
Description of the drawings:
FIG. 1: the structure schematic diagram of the block-shaped electrode low-temperature plasma and wood fiber tail gas treatment device. 1 high-voltage positive wire, 2 insulating plugs, 3 upper shells, 4 sealing rubbers, 5 high-voltage electrode plates, 6 fixing plates, 7 air inlets, 8 flanges, 9 insulating rubbers, 10 lower shells, 11 high-voltage negative wires, 12 square wood fiber filter cores and 13 air outlets.
FIG. 2: 3 A 3- 3 A 3 section 3 view 3. 3
The specific implementation mode is as follows:
a low-temperature plasma of a square electrode is cooperated with a wood fiber tail gas treatment device, a high-voltage electrode plate 5 with the length of 250mm, the width of 10mm and the height of 80mm is fixed in the middle of a fixing plate 6, a high-voltage positive electrode lead 1 is connected to a fixed end, the lead penetrates through a sealing rubber 4, the sealing rubber is tightly attached to the upper portion of the fixing plate, then the sealing rubber and the fixing plate are embedded in an upper shell 3 which is subjected to insulation treatment, and an insulating rubber 9 with the thickness of 5mm is adhered to the periphery of an inner cavity of the. Wrapping long wood fibers with the thickness of 0.05-1mm, the width of 1-2mm and the length of 30-50mm with high-temperature resistant polytetrafluoroethylene to prepare two square wood fiber filter elements 12 with the length of 250mm, the width of 10mm and the height of 40mm, respectively pasting the filter elements on the inner sides of the other two high-voltage electrode plates, ensuring that the upper surface of the wood fiber filter element is flush with the end surfaces of the high-voltage electrode plates during pasting, respectively fixing the filter elements at positions 25mm away from the two sides of the central line on the other fixing plate, connecting a high-voltage negative electrode lead 11 to a fixed end, tightly pasting sealing rubber and the lower part of the fixing plate after the lead penetrates through the sealing rubber, then inlaying the sealing rubber and the fixing plate in a lower shell 10 subjected to insulation treatment, and pasting insulating rubber with the thickness of 5. When the upper part and the lower part of the plasma generating device are connected, the electrode plate at the upper part is firstly inserted between the two wood fiber filter elements 13 at the lower part, and then the upper part and the lower part are connected together through the flange 8.
And tail gas enters the device from the gas inlet, and is subjected to chemical reaction with the generated low-temperature plasma, and finally is discharged from the gas outlet. By double-layer purification reaction, NO in the tail gas of the diesel engine can be generatedXAnd the PM content is greatly reduced.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921003920.3U CN210637135U (en) | 2019-07-01 | 2019-07-01 | Cube-shaped electrode low temperature plasma synergistic wood fiber tail gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921003920.3U CN210637135U (en) | 2019-07-01 | 2019-07-01 | Cube-shaped electrode low temperature plasma synergistic wood fiber tail gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210637135U true CN210637135U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921003920.3U Expired - Fee Related CN210637135U (en) | 2019-07-01 | 2019-07-01 | Cube-shaped electrode low temperature plasma synergistic wood fiber tail gas treatment device |
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| Country | Link |
|---|---|
| CN (1) | CN210637135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177709A (en) * | 2019-07-01 | 2021-01-05 | 东北林业大学 | Cube-shaped electrode low temperature plasma synergistic wood fiber tail gas treatment device |
-
2019
- 2019-07-01 CN CN201921003920.3U patent/CN210637135U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177709A (en) * | 2019-07-01 | 2021-01-05 | 东北林业大学 | Cube-shaped electrode low temperature plasma synergistic wood fiber tail gas treatment device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200529 Termination date: 20210701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |