Plasma exhaust gas and wastewater treatment device with anti-creep function

Abstract

The utility model discloses a kind of plasma waste gas wastewater treatment devices with anti-creep function, including import, DBD plasma reaction chamber, export;DBD plasma reaction chamber includes a plurality of parallel plasma discharge electrodes;DBD plasma electrode includes ground electrode, dielectric tube and high voltage net;Ground electrode, dielectric tube and high voltage electrode wire screen common central axis arrangement and the high voltage formed by the hollow between ground electrode and dielectric tube plasma electric field;Waste gas or waste liquid by import enters and realizes the treatment to waste gas or waste liquid after passing through plasma electric field, and gas or liquid after processing flows from export;The two sides of the high voltage electrode wire screen are provided with annular protective buckle, so that the tip burr side of high voltage electrode wire screen is not exposed and wrapped in the inner wall of protective buckle.The utility model effectively prevents the problem that tip burns metal wire screen and dielectric tube, prolongs the service life of equipment, and facilitates the replacement of high voltage electrode wire screen when maintaining.

Description

Technical Field

[0001] This utility model relates to the field of plasma treatment of waste gas technology, specifically to a plasma waste gas and wastewater treatment device with anti-creep function. Background Technology

[0002] Low-temperature plasma technology is a new waste gas and wastewater treatment technology that has been developed in recent years. The principle of low-temperature plasma treatment of waste gas and wastewater is as follows: when the applied voltage reaches the gas discharge voltage, the gas is broken down, producing a mixture including electrons, various ions, atoms and free radicals. Low-temperature plasma degrades pollutants by utilizing these high-energy electrons, free radicals and other active particles to interact with pollutants in the waste gas, causing pollutant molecules to decompose in a very short time, thereby achieving the purpose of degrading pollutants.

[0003] As attached Figure 1 The existing methods for treating waste gas and waste liquid using plasma, taking the waste gas treatment device for asphalt production disclosed in the applicant's application with publication number CN2021106168383 as an example, have revealed problems in actual operation. Because the stainless steel mesh used as the high-voltage electrode has spikes on both sides, some gas is blown out or liquid leaks into these spikes during the reaction, leading to point discharge. The high energy of the point discharge causes the sides of the high-voltage grid to burn and turn black, requiring frequent replacement. The high temperature also damages the dielectric tube and significantly reduces plasma energy. Furthermore, the spikes can easily scratch workers during replacement, and the high-voltage grid is difficult to disassemble. Therefore, the electrodes need to be improved. Utility Model Content

[0004] 1. The technical problem to be solved:

[0005] To address the aforementioned technical problems, this utility model provides a plasma waste gas treatment device with anti-creep function. By making corresponding improvements to the electrodes, the service life of the electrodes is effectively increased, and the electrodes are easier to replace.

[0006] 2. Technical Solution:

[0007] A plasma waste gas / water treatment device with anti-creep function is characterized by: including an inlet, a DBD plasma reaction chamber, and an outlet; the DBD plasma reaction chamber includes multiple parallel plasma discharge electrodes; the DBD plasma electrode includes a ground electrode, a dielectric tube, and a high-voltage electrode mesh; the ground electrode is a cylindrical solid rod; the cylindrical dielectric tube is wrapped around the ground electrode without contact, and the high-voltage electrode mesh is wrapped around the outside of the dielectric tube with contact; the ground electrode, dielectric tube, and high-voltage electrode mesh are arranged along a common central axis, and the high-voltage plasma electric field formed by the hollow space between the ground electrode and the dielectric tube; the waste gas or waste liquid entering through the inlet is treated after passing through the plasma electric field, and the treated gas or liquid flows out from the outlet; the two sides of the high-voltage electrode mesh are provided with annular protective buckles, so that the sharp burr sides of the high-voltage electrode mesh are wrapped around the inner wall of the protective buckles without being exposed.

[0008] Furthermore, the protective buckle is composed of two detachable semi-circular buckles; the two semi-circular buckles are fixed together by a screw structure; and a smooth conductive pad is provided on the inner wall of the protective buckle.

[0009] Furthermore, the protective buckle is a stainless steel buckle.

[0010] Furthermore, the ground electrode includes a metal casing and aluminum powder filling the metal casing.

[0011] 3. Beneficial effects:

[0012] This invention improves upon existing electrodes used in plasma treatment of wastewater and waste gas by designing annular protective sleeves at both ends of the high-voltage electrode wire mesh. This effectively prevents the problem of burr tip discharge burning the metal wire mesh and dielectric tube, extending the service life of the equipment and facilitating the replacement of the high-voltage electrode wire mesh during maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a plasma reaction chamber used in the prior art for treating waste gas with plasma.

[0014] Figure 2 This is an external view of the DBD plasma electrode in this invention;

[0015] Figure 3 This is an external view of the DBD plasma electrode in this invention.

[0016] Figure 4 This is an external view of a wastewater treatment device that utilizes the electrodes of this invention to treat wastewater in a specific embodiment.

[0017] Explanation of reference numerals in the attached diagram: DBD plasma reaction chamber 14; ground electrode 1; dielectric tube 2; high voltage electrode mesh 3; protective buckle 4. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] As attached Figure 2 To be continued Figure 3 As shown, a plasma waste gas / water treatment device with anti-creep function is characterized by: including an inlet, a DBD plasma reaction chamber 14, and an outlet; the DBD plasma reaction chamber includes multiple parallel plasma discharge electrodes; the DBD plasma electrode includes a ground electrode 1, a dielectric tube 2, and a high-voltage electrode mesh 3; the ground electrode is a cylindrical solid rod; the cylindrical dielectric tube is wrapped around the ground electrode without contact, and the high-voltage electrode mesh is wrapped around the outside of the dielectric tube with contact; the ground electrode, dielectric tube, and high-voltage electrode mesh are arranged along a common central axis, and the high-voltage plasma electric field formed by the hollow space between the ground electrode and the dielectric tube is formed; the waste gas or waste liquid entering through the inlet is treated after passing through the plasma electric field, and the treated gas or liquid flows out from the outlet; the two sides of the high-voltage electrode mesh are provided with annular protective buckles 4, so that the sharp burr side of the high-voltage electrode mesh is wrapped around the inner wall of the protective buckle without being exposed; the protective buckle located on the side connected to the high-voltage line is provided with a groove for the high-voltage wire to pass through.

[0020] Furthermore, the protective buckle is composed of two detachable semi-circular buckles; the two semi-circular buckles are fixed together by a screw structure; and a smooth conductive pad is provided on the inner wall of the protective buckle.

[0021] Furthermore, the protective buckle is a stainless steel buckle.

[0022] Furthermore, the ground electrode includes a metal casing and aluminum powder filling the metal casing. Specific implementation examples:

[0024] In this embodiment, the appendix is ​​used. Figure 1 , 4Reference numeral 14 in the attached figure indicates an improved DBD plasma reaction chamber according to this utility model. The DBD plasma reaction chamber typically contains multiple DBD plasma electrodes arranged in parallel. The gas to be treated enters the plasma electric field through the inlet for treatment, and the treated contaminants are output through the outlet. One end of the ground electrode of the DBD plasma electrode is connected to the negative terminal of the power supply via a wire; the middle position of the high-voltage electrode mesh is connected to the high-voltage terminal of the power supply via a wire; a discharge electric field is generated between the dielectric tube and the ground electrode to treat the gas or liquid passing through it. In actual use, it has been found that the two ends of the high-voltage mesh frequently need to be replaced, and the two ends of the high-voltage mesh of the motor removed from the device are usually blackened and carbonized. This embodiment designs sleeves in the easily blackened areas, as shown in the attached figure. Figure 2 As shown, the protective buckle in this specific embodiment adopts a detachable structure and is fixed by a screw structure.

[0025] As will be well known to those skilled in the art, protective buckles can take many forms in practical use.

[0026] Although the present invention has been disclosed above with reference to preferred embodiments, these are not intended to limit the present invention. Anyone skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection of the claims of this application.

Claims

1. A plasma waste gas and wastewater treatment device with anti-creep function, characterized in that: The system includes an inlet, a DBD plasma reaction chamber, and an outlet. The DBD plasma reaction chamber includes multiple parallel plasma discharge electrodes. Each DBD plasma electrode includes a ground electrode, a dielectric tube, and a high-voltage electrode mesh. The ground electrode is a cylindrical solid rod. The cylindrical dielectric tube is wrapped around the ground electrode without contact, while the high-voltage electrode mesh is wrapped around the outside of the dielectric tube with contact. The ground electrode, dielectric tube, and high-voltage electrode mesh are arranged along a central axis, and the high voltage formed by the hollow space between the ground electrode and the dielectric tube creates a plasma electric field. Waste gas or waste liquid entering through the inlet is treated by passing through the plasma electric field, and the treated gas or liquid flows out from the outlet. The two sides of the high-voltage electrode mesh are provided with annular protective buckles, so that the burr-like tips of the high-voltage electrode mesh are wrapped around the inner wall of the protective buckles without being exposed.

2. The plasma waste gas and wastewater treatment device with anti-creep function according to claim 1, characterized in that: The protective buckle consists of two detachable semi-circular buckles; the two semi-circular buckles are fixed together by a screw structure; and a smooth conductive pad is provided on the inner wall of the protective buckle.

3. A plasma waste gas and wastewater treatment device with anti-creep function according to claim 1 or 2, characterized in that: The protective buckle is made of stainless steel.

4. The plasma waste gas and wastewater treatment device with anti-creep function according to claim 1, characterized in that: The ground electrode includes a metal casing and aluminum powder filling the metal casing.

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