CN212091607U - Plasma flame catalytic purification device for treating organic waste gas - Google Patents
Plasma flame catalytic purification device for treating organic waste gas Download PDFInfo
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- CN212091607U CN212091607U CN202020658612.0U CN202020658612U CN212091607U CN 212091607 U CN212091607 U CN 212091607U CN 202020658612 U CN202020658612 U CN 202020658612U CN 212091607 U CN212091607 U CN 212091607U
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Abstract
The utility model provides a plasma flame catalytic purification device for handling organic waste gas, includes the casing, the one end of casing is equipped with the waste gas entry, and the other end of casing is equipped with the clean gas export, still is equipped with at least one plasma flame catalyst converter, the mode that plasma flame catalyst converter adopted equipartition symmetry installation or tangential installation or tangent circle installation to install on the casing or in the casing. The utility model utilizes plasma and plasma flame to carry out catalytic degradation on cyclone waste gas, and simultaneously cooperates with the plasma flame catalytic converter to generate high-temperature plasma flame to carry out catalytic combustion on the waste gas, thus simply and reliably carrying out catalytic cleaning treatment on the waste gas; the utility model discloses a plasma flame catalytic purification device simple structure, control is convenient, only utilizes the electric energy can carry out the clean and clean to the organic waste gas in the waste gas especially VOCs, and application scope is wide, easily uses widely.
Description
Technical Field
The utility model relates to a waste gas purification device especially relates to a plasma flame catalytic purification device for handling organic waste gas.
Background
In recent years, with rapid development of industry and rapid increase of population, volatile organic waste gas discharged into air is increased rapidly, which becomes a main cause of air pollution, seriously harms human health and restricts sustainable development of social economy. Under the circumstances, the problem of VOCs pollution is urgently solved by seeking a reasonable and effective treatment technology.
At present, there are dozens of VOCs treatment methods, and the practical application mostly adopts the combined technology, but the equipment in the current combined technology has the defects of more complex structure and configuration, large floor area, longer project installation and debugging period, inconvenient transportation and the like. The combustion technology is one of the main treatment means of organic waste gas, occupies a large proportion in the treatment of waste gas, particularly the catalytic combustion technology can realize complete combustion at a low temperature, and has very important effects on the aspects of improving the combustion process, reducing the reaction temperature, promoting complete combustion, inhibiting the formation of toxic and harmful substances and the like, but the catalytic combustion technology needs to keep the activity of a catalyst, prevent the catalyst from being poisoned, has large combustion limitation on the waste gas with large flow and low concentration and has high energy consumption.
In recent years, research on the technology of treating VOCs by degrading VOCs using low temperature plasma has been carried out by related technologists, and the degradation of exhaust gas mainly utilizes the action of high energy electrons and free radical active particles generated during the discharge process and pollutant molecules in the exhaust gas to decompose the pollutant molecules in a very short time, and various subsequent reactions occur to achieve the purpose of reducing the content of pollutants in the exhaust gas. However, different technologies for treating VOCs by low-temperature plasma are influenced by various factors such as discharge forms, initial pollutant concentrations of waste gas, types of catalysts for synergistic treatment and the like, so far, research on reaction kinetics of low-temperature plasma treatment of VOCs by domestic and foreign researchers is not complete enough, research on composition and characteristics of partial intermediate products in reaction is lack of systematic research, and treatment effects are not satisfactory.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome the defect that prior art exists, provide a simple structure, but high-pressure discharge forms the plasma flame stream that has high energy electron and free radical active particle, carry out the plasma flame stream that carries out catalytic combustion's waste gas plasma flame catalytic purification device to organic waste gas through the plasma flame stream that forms when carrying out the fast reaction degradation to waste gas pollutant.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a plasma flame catalytic purification device for handling organic waste gas, includes the casing, the one end of casing is equipped with the waste gas entry, and the other end of casing is equipped with the clean gas export, still is equipped with at least one plasma flame catalyst converter, the mode that plasma flame catalyst converter adopted equipartition symmetry installation or tangential installation or tangent circle installation to install on the casing or in the casing. The waste gas is degraded by plasma under the combined action of one or more plasma flame catalytic converters, and simultaneously, organic matters in the waste gas are generated by plasma flame catalytic combustion, and the waste gas is treated into clean gas and then is discharged through a clean gas outlet.
Furthermore, a swirler is arranged at the waste gas inlet, and the waste gas is fully mixed with the plasma flame flow generated by the plasma flame catalyst through swirling wind by the swirler and is vigorously combusted.
Further, the plasma flame catalyst comprises a discharge part, a conductive part and an air supply part, wherein the discharge part is connected with the conductive part through an insulating part, the central axes of the discharge part and the conductive part are positioned on the same straight line, and the insulating part is communicated with the air supply part through an air supply channel arranged on the insulating part.
Further, the air supply component includes an air compression system. The air source used by the air compression system can be oxygen, waste gas or air.
Further, the plasma flame catalyst also comprises a power supply device, and the power supply device is respectively connected with the discharge part and the conductive part; or one end of the power supply device is connected with the discharge part, and the other end of the power supply device is grounded with the conductive part.
Furthermore, a catalytic oxidizer is arranged at the clean gas outlet, the catalytic oxidizer can reprocess the clean gas to ensure complete combustion and complete harmlessness of the waste gas, and meanwhile, the clean gas after being catalyzed by plasma flame can greatly reduce the gas which generates side effects or causes poisoning to the catalytic oxidizer, thereby enhancing the processing reliability of the catalytic oxidizer.
Further, an exhaust gas inlet valve is arranged at the exhaust gas inlet. The exhaust gas inlet valve can be used for controlling and adjusting the inlet amount of exhaust gas.
Further, a gas component sensor is arranged at the clean gas outlet. The device is used for monitoring the components of the discharged clean gas on line, and adjusting the size of the plasma flame and the waste gas inlet amount of the waste gas inlet through monitoring data.
Further, a heat exchanger is arranged at the clean gas outlet. The heat recovery device is used for recovering the heat of the exhaust gas at the clean gas outlet and cooling the externally exhausted gas.
Further, plasma flame catalytic purification device still is equipped with support piece.
Compared with the prior art, the utility model discloses utilize plasma and plasma flame to carry out catalytic degradation to waste gas, carry out physics and chemical degradation to waste gas molecule with plasma's high energy electron and free radical active particle promptly, cooperate plasma flame catalytic converter to produce high temperature plasma flame simultaneously and carry out catalytic combustion to waste gas, carry out catalytic cleaning to waste gas simply reliably; the utility model discloses a plasma flame catalytic purification device simple structure, control is convenient, only utilizes the electric energy can carry out the clean and clean to the organic waste gas in the waste gas especially VOCs, and application scope is wide, easily uses widely.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a view taken along line A-A in the embodiment 1 shown in FIG. 1;
FIG. 3 is a schematic view of the electrode of example 1 shown in FIG. 1;
fig. 4 is a schematic structural view of embodiment 2 of the present invention;
FIG. 5 is a view from the B-B direction of the embodiment 2 shown in FIG. 4;
fig. 6 is a schematic structural view of embodiment 3 of the present invention.
In the figure, 1-housing, 2-exhaust gas inlet, 3-plasma flame catalyst, 301-discharge part, 302-conductive part, 303-insulating part, 304-gas supply part, 305-power supply device, 310-gas supply channel, 4-clean gas outlet, 401-heat exchanger, 5-cyclone, 6-support, 7-catalytic oxidizer, 8-exhaust gas inlet valve, 9-gas composition sensor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1 to 3, the present embodiment includes a casing 1 with a circular cross section, an exhaust gas inlet 2, four plasma flame catalytic converters 3, and a clean gas outlet 4, where the four plasma flame catalytic converters 3 are uniformly installed at the exhaust gas inlet 2 of the casing 1, the exhaust gas inlet 2 is provided with a cyclone 5, and after passing through the cyclone 5, the exhaust gas enters the casing 1 as a rotational flow exhaust gas flow to be sufficiently mixed with a plasma high temperature flame flow generated by the plasma flame catalytic converter 3 and combusted, and meanwhile, the exhaust gas is catalytically degraded by atomic oxygen or ions in the plasma, and finally discharged through the clean gas outlet 4.
The plasma flame catalyst 3 mainly comprises a discharge part 301, a conductive part 302, an insulating part 303 and a gas supply part 304, wherein the discharge part 301 is connected with the conductive part 302 through the insulating part 303 and is coaxial, and the insulating part 303 and the gas supply part 304 are communicated through a gas supply channel 310 arranged on the insulating part 303.
The air supply part 304 adopts an air compression system, the air compression system comprises an air compressor and a gas pipeline, and the gas pipeline is respectively communicated with an air supply channel 310 on an insulating part of the plasma flame catalyst.
The plasma flame catalytic purifier also comprises a power supply device 305, wherein the power supply device 305 is respectively connected with the discharge part 301 and the conductive part 302, and a high-voltage arc formed between the discharge part 301 and the conductive part 302 can be supplied with power through the power supply device 305.
The plasma flame catalytic purification device for treating organic waste gas is also provided with a support piece 6.
The plasma flame catalytic purifier of the embodiment can better treat the concentration of more than 5000mg/m3The treatment efficiency of the organic waste gas can reach 97 percent, the investment is low, and the operating cost is low.
Example 2
Referring to fig. 4 to 5, the present embodiment is different from embodiment 1 in that the cross section of the housing 1 is rectangular, the plasma flame catalytic converter 3 is installed at four corners of the housing 1 and installed in a form of a tangential circle, the waste gas inlet 2 is not provided with the cyclone 5, the clean gas outlet 4 is provided with the catalytic oxidizer 7, the catalytic oxidizer 7 mainly retreats the clean gas to ensure sufficient combustion and complete harmlessness of the waste gas, and the clean gas after catalytic treatment with the plasma flame can greatly reduce side effects on the catalytic oxidizer 7 or gases causing poisoning of the catalytic oxidizer 7, thereby enhancing the treatment reliability of the catalytic oxidizer 7; in addition, the gas supply unit 304 of the plasma flame catalyst 3 of the present embodiment uses a compressed oxygen cylinder for gas supply. In the embodiment, the waste heat generated by the combustion of the organic waste gas is further treated by the catalytic oxidizer 7, the treatment efficiency can reach 99.5%, and the content of the total organic waste gas detected by the clean gas reaches the national first-class emission standard.
The rest is the same as example 1.
Example 3
Referring to fig. 6, the present embodiment is different from embodiment 1 in that a catalytic oxidizer 7, an exhaust gas intake valve 8, and a gas composition sensor 9 are further provided; the catalytic oxidizer 7 is arranged at the end part, close to the clean gas outlet 4, in the shell 1, the gas component sensor 9 is arranged on the clean gas outlet 4, the waste gas inlet valve 8 is arranged at the front end of the waste gas inlet 2, the content of waste gas components can be detected through the gas component sensor 9, the opening degree of the waste gas inlet valve 8 is controlled by feeding back an electric signal, and the reliability of waste gas treatment is enhanced; the clean gas outlet 4 is also provided with a heat exchanger for recovering the heat of the clean gas outlet 4 and cooling the externally discharged smoke.
The waste heat generated by burning the organic waste gas is further treated by the catalytic oxidizer, the treatment efficiency can reach 99.5%, and the content of the total organic waste gas detected by the clean gas reaches the national first-level emission standard.
The rest is the same as example 1.
Various modifications and variations of the present invention may be made by those skilled in the art, and they are within the scope of the present invention provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. A plasma flame catalytic purification device for treating organic waste gas is characterized in that: the plasma flame catalytic converter is characterized by comprising a shell, wherein a waste gas inlet is formed in one end of the shell, a clean gas outlet is formed in the other end of the shell, at least one plasma flame catalytic converter is further arranged, and the plasma flame catalytic converter is symmetrically installed in an evenly distributed mode or installed in a tangential mode or installed in a tangent circle mode on the shell or in the shell.
2. The plasma flame catalytic purification device for treating organic exhaust gas according to claim 1, characterized in that: and a cyclone is arranged at the waste gas inlet.
3. The plasma flame catalytic purification apparatus for treating organic exhaust gas according to claim 1 or 2, characterized in that: the plasma flame catalyst comprises a discharge part, a conductive part and an air supply part, wherein the discharge part is connected with the conductive part through an insulating part, the central axes of the discharge part and the conductive part are positioned on the same straight line, and the insulating part is communicated with the air supply part through an air supply channel arranged on the insulating part.
4. The plasma flame catalytic purification device for treating organic exhaust gas according to claim 3, characterized in that: the air supply component includes an air compression system.
5. The plasma flame catalytic purification device for treating organic exhaust gas according to claim 4, characterized in that: the plasma flame catalyst also comprises a power supply device, wherein the power supply device is respectively connected with the discharge part and the conductive part, or one end of the power supply device is connected with the discharge part, and the other end of the power supply device is grounded with the conductive part.
6. The plasma flame catalytic purification apparatus for treating organic exhaust gas according to claim 4 or 5, characterized in that: and a catalytic oxidizer is arranged at the clean gas outlet.
7. The plasma flame catalytic purification apparatus for treating organic exhaust gas according to claim 4 or 5, characterized in that: and an exhaust gas inlet valve is arranged at the exhaust gas inlet.
8. The plasma flame catalytic purification apparatus for treating organic exhaust gas according to claim 4 or 5, characterized in that: and a gas component sensor is arranged at the clean gas outlet.
9. The plasma flame catalytic purification apparatus for treating organic exhaust gas according to claim 4 or 5, characterized in that: and a heat exchanger is arranged at the clean gas outlet.
10. The plasma flame catalytic purification apparatus for treating organic exhaust gas according to claim 1 or 2, characterized in that: the plasma flame catalytic purification device is also provided with a supporting piece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020658612.0U CN212091607U (en) | 2020-04-27 | 2020-04-27 | Plasma flame catalytic purification device for treating organic waste gas |
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| CN202020658612.0U CN212091607U (en) | 2020-04-27 | 2020-04-27 | Plasma flame catalytic purification device for treating organic waste gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477042A (en) * | 2021-06-29 | 2021-10-08 | 中国矿业大学(北京) | Method for treating gaseous pollutants based on plasma |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477042A (en) * | 2021-06-29 | 2021-10-08 | 中国矿业大学(北京) | Method for treating gaseous pollutants based on plasma |
| CN113477042B (en) * | 2021-06-29 | 2022-08-05 | 中国矿业大学(北京) | Method for treating gaseous pollutants based on plasma |
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