CN212999258U - Microwave-enhanced plasma waste gas treatment equipment - Google Patents
Microwave-enhanced plasma waste gas treatment equipment Download PDFInfo
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- CN212999258U CN212999258U CN202021402520.2U CN202021402520U CN212999258U CN 212999258 U CN212999258 U CN 212999258U CN 202021402520 U CN202021402520 U CN 202021402520U CN 212999258 U CN212999258 U CN 212999258U
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Abstract
The utility model provides a microwave reinforcing plasma exhaust-gas treatment equipment relates to exhaust-gas treatment technical field, include: the device comprises a cavity, an air inlet, an air outlet, a negative high-voltage direct-current power supply, a microwave source and a core wire; wherein, the microwave source is arranged outside the cavity; the positive pole of the negative high-voltage direct-current power supply is connected with the core wire; the negative pole of the negative high-voltage direct-current power supply is connected to the outer side of the cavity; waste gas enters the cavity from the gas inlet, is treated under the combined action of the microwave source, the negative high-voltage direct-current power supply and the core wire, and is discharged from the gas outlet. The utility model discloses a based on handle waste gas under microwave source and the high-pressure plasma combined action, avoided the mutual interference between microwave and the plasma, equipment structure is simple, and exhaust-gas treatment is efficient.
Description
Technical Field
The utility model relates to an exhaust-gas treatment technical field particularly, relates to a microwave reinforcing plasma exhaust-gas treatment equipment.
Background
With the continuous development of industrial manufacturing enterprises in China, environmental pollution caused by industrial waste gas is one of the important sources of the current environmental pollution. A large amount of organic and inorganic substances harmful to human bodies in industrial waste gas are directly discharged to the atmosphere, causing serious harm to the environment and human bodies. Accordingly, attention is paid to a technique for treating exhaust gas.
The current chemical industry waste gas treatment method mainly comprises thermal combustion, catalytic combustion, absorption and adsorption, condensation recovery, biological treatment, corona discharge and the like. Moreover, these methods are primarily applicable to the treatment of exhaust gases by a single plasma treatment technique or microwave treatment technique.
However, the prior art has the problems of low treatment efficiency, high treatment cost and incapability of solving the mutual interference problem when a plurality of treatment modes exist simultaneously for the waste gas treatment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a microwave enhancement plasma exhaust-gas treatment equipment to the not enough of existence among the above-mentioned prior art exhaust-gas treatment technique to when solving among the prior art exhaust-gas treatment efficiency not high, the treatment cost is high and can not solve multiple processing mode and exist simultaneously, mutual interference's problem between each other.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
the embodiment of the utility model provides a microwave enhancement plasma exhaust-gas treatment equipment, include: the device comprises a cavity, an air inlet, an air outlet, a negative high-voltage direct-current power supply, a microwave source and a core wire;
wherein the microwave source is arranged outside the cavity; the positive electrode of the negative high-voltage direct-current power supply is connected with the core wire; the negative electrode of the negative high-voltage direct-current power supply is connected to the outer side of the cavity; and waste gas enters the cavity from the gas inlet, is treated under the combined action of the microwave source, the negative high-voltage direct-current power supply and the core wire, and is discharged from the gas outlet.
Optionally, the cavity is a metal can body.
Optionally, the microwave source comprises a plurality of microwave sources, and the plurality of microwave sources are uniformly arranged on the outer wall of the cavity.
Optionally, the core wire is disposed inside the cavity.
Optionally, under the action of the negative high voltage direct current power supply, a discharge plasma is generated between the core wire and the cavity side wall.
Optionally, the negative high-voltage direct-current power supply is-30 KV-4 KV.
The utility model has the advantages that: a microwave-enhanced plasma exhaust gas treatment apparatus comprising: the device comprises a cavity, an air inlet, an air outlet, a negative high-voltage direct-current power supply, a microwave source and a core wire; wherein the microwave source is arranged outside the cavity; the positive electrode of the negative high-voltage direct-current power supply is connected with the core wire; the negative electrode of the negative high-voltage direct-current power supply is connected to the outer side of the cavity; and waste gas enters the cavity from the gas inlet, is treated under the combined action of the microwave source, the negative high-voltage direct-current power supply and the core wire, and is discharged from the gas outlet. That is to say, the utility model discloses based on an exhaust-gas treatment equipment both can use microwave treatment waste gas can use plasma to handle waste gas again, improved the efficiency of waste gas, equipment structure is simple moreover, and is more intelligent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of an apparatus for microwave-enhanced plasma exhaust gas treatment according to an embodiment of the present invention;
fig. 2 is a schematic view of an installation position of the microwave source in the cavity according to an embodiment of the present invention.
Icon: 1-cavity, 2-air inlet, 3-air outlet, 4-negative high voltage direct current power supply, 5-microwave source and 6-core wire.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Here, the related terms in the present invention are explained:
plasma: plasmas are aggregates consisting of charged positive and negative particles (including positive ions, negative ions, electrons, radicals, reactive radicals, etc.), wherein the positive and negative charges are equal in magnitude, so called plasmas, which are macroscopically electrically neutral. The plasma, which is composed of electrons, ions, radicals, and neutral particles, is a conductive fluid and generally maintains electrical neutrality.
An electrode: refers to a component in an electronic or electrical device, equipment, which is used as two ends for inputting or outputting current in a conductive medium (solid, gas, vacuum or electrolyte solution). One pole of the input current is called anode or positive pole, and the other pole of the output current is called cathode or negative pole.
FIG. 1 is a schematic view of a microwave-enhanced plasma exhaust gas treatment apparatus; fig. 2 is a schematic diagram of an installation position of a microwave source in a cavity, and details of a microwave-enhanced plasma waste gas treatment apparatus provided by an embodiment of the present invention are described below with reference to fig. 1 and fig. 2.
Fig. 1 is a schematic view of a microwave-enhanced plasma exhaust treatment device provided by an embodiment of the present invention, as shown in fig. 1, the microwave-enhanced plasma exhaust treatment device includes: the microwave cavity comprises a cavity body 1, an air inlet 2, an air outlet 3, a negative high-voltage direct-current power supply 4, a microwave source 5 and a core wire 6.
The embodiment of the utility model provides an in, cavity 1 is the metal can dress body, and the metal is high temperature resistant metal material. The microwave source 5 refers to a device for generating microwave energy, referred to as a microwave source. The microwave sources 5 are uniformly distributed on the side wall of the microwave cavity. The microwave is an electric wave having a frequency of 300 mhz to 300 ghz, and water molecules in the heated medium material are polar molecules. Under the action of a rapidly changing high-frequency point magnetic field, the polarity orientation of the magnetic field changes along with the change of an external electric field. The effect of mutual friction motion of molecules is caused, at the moment, the field energy of the microwave field is converted into heat energy in the medium, so that the temperature of the material is raised, and a series of physical and chemical processes such as thermalization, puffing and the like are generated to achieve the aim of microwave heating.
The microwave heating has the following advantages: the heating time is short; the heat energy utilization rate is high, and energy is saved; heating uniformly; the microwave source is easy to control, and the microwave can also induce the catalytic reaction.
The microwave is generated by a microwave source, which is mainly composed of a high-power magnetron. The magnetron is a device which completes energy conversion by utilizing the movement of electrons in vacuum and can generate high-power microwave energy, for example, a 4250MHz magnetic wave tube can obtain 5MHz, and a 4250MHz klystron can obtain 30MHz, so that the microwave technology can be applied to the technical field of wastewater treatment.
The embodiment of the utility model provides an in, microwave source 5 includes a plurality ofly, and the even setting of a plurality of microwave sources is at the outer wall of metal. Illustratively, as shown in fig. 2, the core wire 6 is inserted in the metal canning cavity 1, the microwave sources are divided into 3 rows and uniformly distributed on the outer wall of the metal canning cavity, and the microwave sources are distributed at 120 degrees between adjacent microwave sources on the same plane of the outer wall of the metal canning cavity.
Optionally, the negative high voltage direct current power supply 4 is-30 KV-4 KV.
Optionally, the core wire 6(cored wire) is a wire body with a round or rectangular cross section, wherein a steel sheet is used as an outer sleeve, and iron alloy powder is filled in the outer sleeve to serve as a core material.
The core wire 6 is arranged inside the cavity 1; under the action of the negative high-voltage direct-current power supply 4, discharge plasma is generated between the core wire 6 and the side wall of the cavity 1.
It should be noted that the working principle of the plasma waste gas treatment device is as follows: gas molecules in the air are ionized under the action of the negative high-voltage direct-current power supply 4 to generate a large number of particles such as electrons, active free radicals, atoms, excited molecules and the like, and the particles have high reaction activity. Under the action of high voltage direct current, the generated high-energy electrons and gas molecules or atoms in the air generate inelastic collision to initiate free radicals, and the free radicals and waste gas molecules are combined to react, so that the aim of evolution and treatment of waste gas is fulfilled.
Wherein, the microwave source 5 is arranged outside the cavity; the positive pole of the negative high-voltage direct-current power supply 4 is connected with the core wire 6; the negative pole of the negative high-voltage direct-current power supply 4 is connected to the outer side of the cavity 1; waste gas enters the cavity 1 from the gas inlet, is treated under the combined action of the microwave source 5, the negative high-voltage direct-current power supply 4 and the core wire 6, and is discharged from the gas outlet.
In the embodiment of the present invention, the microwave sources 6 are uniformly distributed outside the metal can cavity 1. Optionally, in a first period, the waste gas to be treated enters the metal canning cavity 1 from the air inlet 2 at a preset speed under the action of the fan, and microwaves are generated under the action of the microwave source 5 to act on the waste gas to be treated; in a second preset period, the waste gas to be treated entering the metal canning cavity 1 generates plasma between the core wire 6 and the inner wall of the cavity when the negative high-voltage direct-current power supply 4 is in an on state, and the plasma acts on the waste gas to be treated entering the cavity 1 in the second period to treat the waste gas to be treated. The time of the first period and the time of the second period can be set according to the requirements of users, and therefore the intelligence of the system is improved. The waste gas is treated by the microwave treatment waste gas and the plasma treatment waste gas according to a time sequence, so that the problem that the service life of the microwave source is reduced due to mutual interference between the microwave source and the plasma when the microwave treatment waste gas and the plasma treatment waste gas are treated simultaneously is solved.
The air inlet and the treatment port of the waste gas treatment equipment are respectively provided with a metal net, and the aperture of the metal net is less than or equal to 3 mm. Here, in order to prevent the leakage of the microwave, the inlet and outlet of the exhaust gas treatment apparatus are provided with metal meshes, respectively. ByWhen the human body is in a short distance with a microwave radiation source for a long time, the phenomena of dizziness, sleep disorder, hypomnesis, bradycardia, blood pressure reduction and the like are caused by excessive radiation energy. When the microwave leakage reaches 1mw/cm2When it occurs, the eyes feel suddenly dazzled, the vision is degraded, and even cataract is caused. In order to ensure the health of users, metal nets are arranged at the inlet and the outlet of the reaction cavity, and the corners can generate microwave discharge under the action of microwaves, so that dangerous accidents are easy to happen. The metal mesh can block microwave leakage, reduce the damage of microwave to human body and improve the safety of the system.
Further, a filter screen is arranged at an air outlet 3 of the waste gas treatment equipment and is used for filtering particles generated after the molecules of the waste gas to be treated react. Wherein, the filter screen is replaceable to be convenient for later maintenance.
In the embodiment of the present invention, the core wire 6 is used as a positive electrode, and the electrode refers to a component in the plasma waste gas treatment device, and is used as two terminals for inputting or outputting current in the conductive medium (solid, gas, vacuum or electrolyte solution), wherein the dielectric medium in this embodiment is gas. Alternatively, the electrode may be a metal electrode, and the specific material of the electrode is not particularly limited herein.
The embodiment discloses a microwave-enhanced plasma exhaust gas treatment device, includes: the device comprises a cavity 1, an air inlet 2, an air outlet 3, a negative high-voltage direct-current power supply 4, a microwave source 5 and a core wire 6; wherein, the microwave source 5 is arranged outside the cavity 1; the positive pole of the negative high-voltage direct-current power supply 4 is connected with the core wire 6; the negative pole of the negative high-voltage direct-current power supply 4 is connected to the outer side of the cavity 1; waste gas enters the cavity 1 from the gas inlet 2, is treated under the combined action of the microwave source 5, the negative high-voltage direct-current power supply 4 and the core wire 6, and is discharged from the gas outlet 3. That is to say, the utility model discloses based on an exhaust-gas treatment equipment both can use microwave treatment waste gas can use plasma to handle waste gas again, improved the efficiency of waste gas, equipment structure is simple moreover, and is more intelligent.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A microwave-enhanced plasma exhaust gas treatment apparatus, comprising: the device comprises a cavity, an air inlet, an air outlet, a negative high-voltage direct-current power supply, a microwave source and a core wire;
wherein the microwave source is arranged outside the cavity; the positive electrode of the negative high-voltage direct-current power supply is connected with the core wire; the negative electrode of the negative high-voltage direct-current power supply is connected to the outer side of the cavity; and waste gas enters the cavity from the gas inlet, is treated under the combined action of the microwave source, the negative high-voltage direct-current power supply and the core wire, and is discharged from the gas outlet.
2. The microwave-enhanced plasma exhaust gas treatment apparatus according to claim 1, wherein the cavity is a metal can body.
3. A microwave enhanced plasma exhaust treatment device according to claim 1, wherein the microwave source comprises a plurality of microwave sources, and the plurality of microwave sources are uniformly disposed on the outer wall of the chamber.
4. A microwave-enhanced plasma exhaust gas treatment apparatus according to claim 1, wherein the core wire is disposed inside the cavity.
5. The microwave-enhanced plasma exhaust gas treatment apparatus according to claim 4, wherein a discharge plasma is generated between the core wire and the chamber sidewall by the negative high voltage direct current power supply.
6. The microwave-enhanced plasma exhaust gas treatment apparatus according to claim 1, wherein the negative high voltage direct current power supply is-30 KV to-4 KV.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021402520.2U CN212999258U (en) | 2020-07-16 | 2020-07-16 | Microwave-enhanced plasma waste gas treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021402520.2U CN212999258U (en) | 2020-07-16 | 2020-07-16 | Microwave-enhanced plasma waste gas treatment equipment |
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| CN212999258U true CN212999258U (en) | 2021-04-20 |
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| CN202021402520.2U Active CN212999258U (en) | 2020-07-16 | 2020-07-16 | Microwave-enhanced plasma waste gas treatment equipment |
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