Plasma incinerator waste gas treatment equipment

Abstract

The plasma incinerator waste gas treatment equipment comprises a treatment tank and an upper cover welded to the upper end of the treatment tank, a gas inlet pipe is welded to the bottom of the treatment tank, the upper end of the gas inlet pipe extends to the middle of the treatment tank, and a gas outlet pipe is welded to the upper end of the upper cover; the treatment tank is internally provided with a flow guide piece for prolonging a waste gas flowing path, and a spraying dust removal mechanism is arranged in the treatment tank; according to the waste gas dust removal device, the flow guide part and the spraying dust removal mechanism are arranged in the treatment tank, so that waste gas entering the treatment tank from the gas inlet pipe enters the spraying dust removal mechanism under the action of the flow guide part, dust in the waste gas is removed by the spraying dust removal mechanism, and the purpose of waste gas dust removal is achieved; and meanwhile, the highest point of the second flow guide cover is lower than the highest point of the flow guide groove, so that the flow guide groove is prevented from being blocked by water accumulated above the second flow guide cover.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for a plasma incinerator. Background Technology

[0002] Plasma incinerators are advanced waste treatment equipment that uses high-temperature electric arc discharge or high-frequency electromagnetic fields to excite gases, ionizing them to form plasma. Solid or liquid waste is introduced into the plasma, where it is rapidly decomposed and broken down into harmless gases and non-toxic ash at high temperatures. It can efficiently treat various types of organic waste, hazardous waste, and medical waste, including organic solvents, paints, and plastics. Due to complete combustion and decomposition at high temperatures, it produces almost no secondary pollutants and can convert some waste into energy, such as heat or electricity. However, plasma incinerators generate waste gas during waste treatment, including unburned residues, organic matter decomposed into gaseous forms such as carbon dioxide, carbon monoxide, and nitrogen oxides, and particulate matter produced by the combustion of some solid waste. Therefore, waste gas treatment equipment is required after incineration.

[0003] Traditionally, water mist spraying is used to treat exhaust gas. However, the small contact area between the water mist spraying and the exhaust gas results in poor exhaust gas treatment effect.

[0004] For the reasons mentioned above, it is necessary to propose a plasma incinerator exhaust gas treatment device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a plasma incinerator exhaust gas treatment device.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A plasma incinerator exhaust gas treatment device includes a treatment tank, which has an inlet pipe at one end and an outlet pipe at the other end. The treatment tank is equipped with a flow guiding structure and a spray dust removal structure inside. The airflow guiding structure includes multiple layers of airflow guiding covers, which are sequentially arranged between the air inlet pipe and the air outlet pipe, allowing the airflow to meander between the multiple layers of airflow guiding covers. The dust removal structure includes atomizing nozzles disposed between two adjacent layers of guide hoods, and the spraying direction of the atomizing nozzles is staggered with the airflow direction.

[0007] Furthermore, the multi-layered air guide body includes a second air guide and a third air guide, both of which are provided with multiple pieces and are arranged alternately in sequence; The second flow guide is provided with a flow guide hole in the middle, and the third flow guide is provided with a flow guide groove on the edge. Multiple flow guide grooves are evenly distributed around the edge of the third flow guide.

[0008] Furthermore, the second and third fairings are in any one of the following shapes: flat, conical, or spherical.

[0009] Furthermore, the interior of the upper cover of the treatment tank is provided with a condensation structure, which consists of several arc-shaped condensation plates arranged longitudinally.

[0010] Furthermore, the second and third air guides are arranged with their middle sections protruding towards the air outlet end, and the highest point of the second air guide protrusion is lower than the highest point of the air guide groove.

[0011] Furthermore, the dust removal structure also includes a water pump, with an inlet pipe at the inlet end of the water pump and a filter element at the end of the inlet pipe. The outlet end of the water pump is connected to the atomizing nozzles between each flow guide hood. The atomizing nozzle includes a nozzle frame and a nozzle head. The nozzle frame includes multiple concentrically arranged flow guide rings, each of which is connected to the outlet end of the water pump. Several nozzle heads are evenly spaced at the lower end of the flow guide rings. A water storage tank is formed at the bottom of the treatment tank, and the filter element is submerged in the liquid surface of the outlet tank.

[0012] Furthermore, the edge of the second guide shroud is connected to the inner wall of the treatment tank via an overflow structure. The overflow structure includes an overflow weir and a folded edge. The folded edge is a vertical folded edge formed by folding the edge of the second guide shroud downwards. The overflow weir is an arc-shaped groove structure fixedly installed on the inner wall of the treatment tank. The folded edge maintains a liquid flow gap with the inner wall of the treatment tank, and the folded edge is inserted into the overflow weir, so that the overflow structure forms an annular liquid seal between the edge of the second guide shroud and the inner wall of the treatment tank. Liquid falls through the overflow weir, while gas cannot pass through.

[0013] Furthermore, the bottom of the treatment tank is provided with a labyrinth structure, which includes several arc-shaped baffles. These arc-shaped baffles form a multi-ring concentric ring baffle structure centered on the air inlet pipe. Each ring baffle includes multiple arc-shaped baffles located on the same virtual circle. Longitudinal openings are provided between the arc-shaped baffles, and the longitudinal openings on adjacent ring baffles are staggered. A guide plate is provided between the labyrinth structure and the multi-layer guide shroud. The guide plate is in the shape of an inverted cone, and its edge is sealed to the inner wall of the treatment tank. A downflow pipe is provided at the center. The downflow pipe is sleeved on the air inlet pipe at a distance, so that the sprayed water falls into the innermost ring baffle through the downflow pipe.

[0014] Furthermore, the bottom of the treatment tank is also provided with a slag discharge structure. A slag discharge chamber is provided between the bottom of the labyrinth structure and the bottom of the treatment tank. A slag discharge pipe is provided on the side wall of the slag discharge chamber, and a slag discharge valve is provided on the slag discharge pipe. The slag discharge structure also includes a bottom support plate set at the bottom of the labyrinth structure. The bottom support plate is controlled to move up and down within the slag discharge chamber. When the bottom support plate moves up and fits against the bottom of the arc-shaped baffle, the bottom of each ring baffle forms a tight seal and is separated from the slag discharge pipe. When the bottom support plate moves down, the bottom of each ring baffle opens and connects with the slag discharge chamber.

[0015] Furthermore, the surface of the arc-shaped plate is coated with a superhydrophobic coating, and the upper cover is equipped with two sets of acoustic wave devices, one of which emits low-quality standing waves at a frequency of 200~500Hz; the other of which emits high-frequency ultrasonic waves at a frequency of 20~50kHz.

[0016] The advantages and beneficial effects of this invention are as follows: Through the flow guiding structure and spray dust removal mechanism installed inside the treatment tank, the exhaust gas entering the treatment tank through the inlet pipe is guided by the flow guiding structure and then enters the spray dust removal mechanism, allowing the spray dust removal mechanism to remove dust from the exhaust gas, thus achieving the purpose of exhaust gas dust removal. The flow guiding structure consists of a first flow guiding hood, a second flow guiding hood, a third flow guiding hood, flow guiding holes, and flow guiding grooves. The first flow guiding hood is welded to the upper end of the inlet pipe via a support rod, while several second and third flow guiding hoods are staggered. Simultaneously, the flow guiding holes are opened in the middle of the second flow guiding hoods, and the flow guiding grooves are opened at the edge of the third flow guiding hoods, facilitating the flow of exhaust gas discharged from the inlet pipe through the first flow guiding hoods. The exhaust gas is initially guided by the second guide shroud. After being guided, the exhaust gas converges upward under the action of the second guide shroud and enters the lower part of the third guide shroud through the guide holes. The exhaust gas below the third guide shroud moves upward through the guide groove opened at the edge, thus achieving the purpose of exhaust gas guidance. The guided exhaust gas increases the contact area with the water mist sprayed by the atomizing nozzle, which facilitates the sedimentation of large particles in the exhaust gas inside the treatment tank after contact with the water mist. The water pump transfers the water at the bottom of the treatment tank to the water outlet pipe through the water inlet pipe. The water in the water outlet pipe enters the atomizing nozzle through the guide ring, which facilitates the atomizing nozzle to spray water. At the same time, the highest point of the second guide shroud is lower than the highest point of the guide groove, which prevents the water accumulated above the second guide shroud from clogging the guide groove. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a plasma incinerator waste gas treatment according to the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a diagram of the internal structure of the present invention; Figure 4 This is an unfolded structural diagram of the processing tank, air inlet pipe, upper cover, air outlet pipe, first guide shroud, second guide shroud and third guide shroud of the present invention; Figure 5 This is a structural diagram of the water pump, inlet pipe, outlet pipe, guide ring, and atomizing nozzle of the present invention; Figure 6 This is a structural diagram of the condensate plate of the present invention; Figure 7 This is a schematic diagram of the structure of the second flow guide in Embodiment 3 of the present invention; Figure 8 This is one of the schematic diagrams of the maze structure in this invention; Figure 9 This is the second schematic diagram of the maze structure in this invention; Figure 10 This is a schematic diagram showing the position movement of the base plate in this invention.

[0018] In the diagram: 1. Processing tank; 2. Inlet pipe; 3. Upper cover; 4. Outlet pipe; 5. First guide hood; 6. Support rod; 7. Second guide hood; 8. Third guide hood; 9. Guide hole; 10. Guide groove; 11. Water supply pipe; 12. Water pump; 13. Inlet pipe; 14. Outlet pipe; 15. Guide ring; 16. Atomizing nozzle; 17. Filter element; 18. Liquid level sensor; 19. Condensate plate; 20. Slag discharge valve; 21. Overflow weir; 22. Folded edge; 23. Labyrinth structure; 24. Arc-shaped baffle; 25. Longitudinal opening; 26. Guide plate; 27. Downflow pipe; 28. Slag discharge chamber; 29. ​​Bottom support plate. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described below with reference to examples. These examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] Example 1: A plasma incinerator exhaust gas treatment device, such as Figure 1-6 As shown, it includes a treatment tank 1 and an upper cover 3 welded to the upper end of the treatment tank 1. An air inlet pipe 2 is welded to the bottom of the treatment tank 1, and the upper end of the air inlet pipe 2 extends to the middle of the treatment tank 1. An air outlet pipe 4 is welded to the upper end of the upper cover 3. A flow guiding structure for extending the flow path of exhaust gas is provided inside the treatment tank 1. A spray dust removal mechanism is provided inside the treatment tank 1. The treatment tank 1 is equipped with a spray dust removal mechanism. Through the flow guiding structure and spray dust removal mechanism installed inside the treatment tank 1, the exhaust gas entering the treatment tank 1 through the air inlet pipe 2 enters the spray dust removal mechanism under the action of the flow guiding structure, so that the spray dust removal mechanism removes the dust in the exhaust gas and achieves the purpose of exhaust gas dust removal.

[0021] The flow guiding structure includes a first flow guide shroud 5 welded to the upper end of the air inlet pipe 2 via a support rod 6, and a second flow guide shroud 7 and a third flow guide shroud 8 welded to the inner surface of the treatment tank 1. The second flow guide shroud 7 and the third flow guide shroud 8 are alternately arranged in sequence. A flow guide hole 9 is opened in the middle of the second flow guide shroud 7, and a flow guide groove 10 is opened on the edge of the third flow guide shroud 8. This facilitates the initial flow guiding of the exhaust gas discharged from the air inlet pipe 2 under the action of the first flow guide shroud 5. After the flow guiding, the exhaust gas converges upward under the action of the second flow guide shroud 7 and enters the area below the third flow guide shroud 8 through the flow guide hole 9. The exhaust gas below the third flow guide shroud 8 moves upward through the flow guide groove 10 on the edge, thus achieving the purpose of exhaust gas flow guiding. The second flow guide shroud 7 and the third flow guide shroud 8 are arranged with their middle parts protruding towards the end of the air outlet pipe 4 (specifically, they can adopt a conical or spherical shape structure), and the highest point of the second flow guide shroud 7 is lower than the highest point of the flow guide groove 10. The dust removal spraying mechanism includes a water pump 12 fixed inside the treatment tank 1 (it is understood that the location of the water pump 12 is not limited, and an externally mounted water pump 12 can also be used). The water pump 12 has an inlet pipe 13 fixed at its inlet end, and a filter element 17 is installed at the end of the inlet pipe 13. The water pump 12 has an outlet pipe 14 fixed at its outlet end. The outlet pipe 14 has several branch ends, and atomizing nozzles 16 are installed at the branch ends of the outlet pipe 14. The atomizing nozzle 16 includes a nozzle frame and a nozzle head. The nozzle frame includes multiple concentrically arranged guide rings 15, each of which is connected to the water pump 12 outlet end. Several nozzles are evenly spaced at the lower end of the guide rings 15. The atomizing nozzles 16 for dust removal spraying are installed on the lower surface of the guide rings 15.

[0022] The flow guiding structure includes multiple layers of flow guiding hoods, which are sequentially arranged between the inlet pipe 2 and the outlet pipe 4, allowing the airflow to meander between the multiple layers of flow guiding hoods and extending the gas flow path. The dust removal structure includes atomizing nozzles 16 arranged between adjacent layers of flow guiding hoods, with the spray direction of the atomizing nozzles 16 staggered with the airflow direction. Overall, the airflow from the inlet pipe 2 to the outlet pipe 4 contacts the spray nozzles in a counter-current direction. Microscopically, the gas moves horizontally between the layers of the flow guiding hoods, while the spray direction is vertically downward, thus... The flow and spray come into contact horizontally and in an alternating direction between the layers. When the exhaust gas is repeatedly deflected, the flow path of the gas is increased, providing a longer time for spray washing and improving the washing effect of the exhaust gas. On the other hand, the exhaust gas flows laterally between the guide hoods, while the washing water mist sprayed from the atomizing nozzle 16 falls vertically, so that the two form an alternating flow direction, which is more conducive to washing off the particulate matter mixed in the exhaust gas. Since the layers are separated by the guide hoods, the wastewater from washing will not pollute the gas in the lower layer, thus achieving a better washing effect for the exhaust gas.

[0023] The increased exhaust gas flow increases the contact area with the water mist sprayed by the atomizing nozzle 16, making it easier for large particles in the exhaust gas to settle inside the treatment tank 1 after contact with the water mist. The water pump 12 transfers the water at the bottom of the treatment tank 1 to the outlet pipe 14 through the inlet pipe 13. The water in the outlet pipe 14 enters the atomizing nozzle 16 through the guide ring 15, making it easier for the atomizing nozzle 16 to spray the water. At the same time, the highest point of the second guide shroud 7 is lower than the highest point of the guide groove 10, preventing the water accumulated above the second guide shroud 7 from clogging the guide groove 10.

[0024] In this embodiment, a water supply pipe 11 for replenishing water is provided on the side of the upper cover 3, so that cleaning water can be replenished into the interior of the treatment tank 1 through the upper cover 3. A slag discharge valve 20 for discharging slag is provided at the bottom of the treatment tank 1, so that large particles settled at the bottom of the treatment tank 1 can be discharged through the slag discharge valve 20.

[0025] In this embodiment, the bottom of the treatment tank 1 is an empty structure, which is used to hold the falling spray liquid and circulate it through the water pump 12. A liquid level sensor 18 for liquid level detection is installed at the bottom of the treatment tank 1. The opening and closing of the slag discharge valve 20 is controlled so that when the impurity content of the spray liquid is high, the slag discharge valve 20 can be opened to discharge the liquid and replenish it to form a circulation.

[0026] In this embodiment, the liquid level sensor 18 is used to facilitate the detection of the liquid level inside the processing tank 1, thereby preventing the liquid level in the processing tank 1 from being too high and flowing into the air inlet pipe 2.

[0027] Specifically, a filter element 17 is installed at the water inlet end of the water inlet pipe 13. In this embodiment, the filter element 17 installed at the water inlet end of the water inlet pipe 13 facilitates the filtration of water entering the end of the water inlet pipe 13, thereby preventing impurities in the water from clogging the atomizing nozzle 16. Figure 2 As shown, in this embodiment, the filter element 17 forms a circular structure around the inner wall of the treatment tank 1. This arrangement can increase the filtration area, meet the liquid inlet requirements of the water pump 12, and avoid the impact of clogging on the reduction of the filtration area and the decrease of the water inlet of the water pump 12.

[0028] Specifically, a condensation plate 19 is welded to the inner surface of the upper end of the upper cover 3. The condensation plate 19 is composed of several arc-shaped plates. In this embodiment, the condensation plate 19 welded to the inner surface of the upper end of the upper cover 3 facilitates the interception of water mist entering the upper cover 3, thereby reducing the amount of water mist discharged from the air outlet pipe 4.

[0029] Example 2: The principle and structure of this embodiment are largely the same as those of the previous embodiment. The difference lies in the presence of a labyrinth structure 23 at the bottom of the treatment tank 1. The core characteristics of the plasma incinerator exhaust gas are that it contains complex pollutants, has strong oxidizing properties, and carries a large amount of ultrafine particles and acidic gaseous pollutants. After the dust removal structure washes the exhaust gas and removes the particulate pollutants, the washing wastewater containing a large amount of impurities falls into the bottom of the treatment tank 1. In order to save water, a water pump 12 is also installed in this space to circulate the spray water. If the wastewater containing a large amount of impurities at the bottom is pumped up, it will inevitably cause secondary pollution of the washed gas. Although a filter pipe is provided in the previous embodiment, after long-term use, the filter tank will inevitably become saturated and clogged, and the filtration effect is not good if only the filter tank is used.

[0030] As an improvement, such as Figure 8-10 As shown, a labyrinth structure 23 is provided at the bottom of the processing tank 1. The labyrinth structure 23 includes several arc-shaped baffles 24, which form a multi-ring concentric annular baffle structure centered on the air intake pipe 2. Each annular baffle includes multiple arc-shaped baffles 24 located on the same virtual circle. Longitudinal openings 25 are provided between the arc-shaped baffles 24, and the longitudinal openings 25 on adjacent annular baffles are staggered. A flow guide plate 26 is provided between the labyrinth structure 23 and the multi-layer flow guide shroud. The flow guide plate 26 is in the shape of an inverted cone, and its edge is sealed to the inner wall of the processing tank 1. A flow descending pipe 27 is provided at the center, and the flow descending pipe 27 maintains a certain spacing. Installed on the air inlet pipe 2, the spray water falls through the downflow pipe 27 into the innermost annular baffle. The guide plate 26 is used to separate and collect all the spray washing water falling from above into the downflow pipe 27. From the downflow pipe 27, it falls into the labyrinth structure 23 below, and the sewage is guided through the downflow pipe 27 to the inlet of the labyrinth structure 23. This inlet is the annular baffle closest to the air inlet pipe 2. It can be understood that the downflow pipe 27 and the air inlet pipe 2 are arranged in a concentric tube shape. The sewage falls into the innermost annular baffle structure through the annular gap between the inner wall of the downflow pipe 27 and the outer wall of the air inlet pipe 2. Then the sewage flows outward in a winding manner.

[0031] In actual use, when wastewater containing impurities falls from above, it enters the labyrinth structure 23. Because the bottom of the treatment tank 1 is divided into several areas by the arc-shaped baffles 24, firstly, it prevents the falling wastewater from hitting the water surface and creating large ripples, thus avoiding water turbulence that could affect the sedimentation of the wastewater; secondly, the separation by the arc-shaped baffles 24 within the labyrinth structure 23 reduces the flow velocity of the wastewater and increases its flow path, allowing impurities in the wastewater sufficient time to settle. By the time the wastewater reaches the vicinity of the filter pipe, many of its internal particles have already settled to the bottom. In this embodiment, multiple ring-shaped baffle structures are arranged from the inside out, with each ring interconnected by longitudinal openings 25. The arc-shaped baffles 24 obstruct the water flow, causing it to flow in a tortuous manner and through the longitudinal openings 25 into the outer ring-shaped baffles, thereby increasing the water flow path.

[0032] Furthermore, the bottom of the treatment tank 1 is also provided with a slag discharge structure. A slag discharge chamber 28 is provided between the bottom of the labyrinth structure 23 and the inner bottom of the treatment tank 1. Based on the above, it can be understood that when the sewage flows between the multiple rings of the arc-shaped baffle 24, impurities will be deposited at the bottom of the arc-shaped baffle 24. In order to facilitate long-term operation, the slag deposited at the bottom must be efficiently removed. Specifically, the side wall of the slag discharge chamber 28 is provided with a slag discharge pipe, and the slag discharge pipe is provided with a slag discharge valve 20. The slag discharge structure also includes a bottom support plate 29 provided at the bottom of the labyrinth structure 23. The bottom support plate 29 is controlled to move up and down within the slag discharge chamber 28. When the bottom support plate 29 moves up and fits against the bottom of the arc-shaped baffle 24, the bottom of each ring of baffles forms a tight seal and is separated from the slag discharge pipe. When the bottom support plate 29 moves down, the bottom of each ring of baffles opens and connects with the slag discharge chamber 28. It can be understood that the lifting and lowering of the bottom support plate 29 can be controlled by a hydraulic cylinder.

[0033] In actual use, the bottom support plate 29 is usually raised to the upper stop point (i.e., it is in contact with the bottom of the annular baffle). At this time, the sewage flows from the inside to the outside through the tortuous flow channel and settles, and impurities accumulate at the bottom. After running for a certain period of time, the bottom support plate 29 is lowered, so that the bottom of the labyrinth structure 23 can be directly connected to the slag discharge chamber 28, so that the impurities deposited at the bottom can fall into the slag discharge chamber 28 and then be discharged through the slag discharge pipe. It can be understood that in order to improve the slag discharge efficiency, an auxiliary flushing can also be added. That is, when discharging slag, the auxiliary flushing is turned on to flush the deposited impurities into the slag discharge pipe, thereby improving the slag discharge efficiency.

[0034] Example 3: This embodiment improves upon Embodiment 1. In Embodiment 1, the edge of the second guide shroud 7 can be considered to be welded and fixedly connected to the inner wall of the treatment tank 1. Since the middle of the second guide shroud 7 and the third guide shroud 8 are convex, liquid inevitably accumulates at the edge of the second guide shroud 7. In Embodiment 1, the accumulation of liquid prevents blockage of the guiding structure by setting the highest point of the second guide shroud 7 to be lower than the highest point of the guide channel 10. However, this structure inevitably increases the interlayer spacing of the guide shrouds, thereby increasing the length of the treatment tank 1 and making the equipment larger; especially when multiple layers of second guide shrouds 7 and third guide shrouds 8 are installed.

[0035] As an improvement, specifically, such as Figure 7 As shown, the edge of the second guide shroud 7 is connected to the inner wall of the treatment tank 1 through an overflow structure. The overflow structure includes an overflow weir 21 and a folded edge 22. The folded edge 22 is a vertical folded edge formed by folding the edge of the second guide shroud 7 downwards. The overflow weir 21 is an arc-shaped groove structure fixedly installed on the inner wall of the treatment tank 1. The folded edge maintains a liquid flow gap with the inner wall of the treatment tank 1, and the folded edge is inserted into the overflow weir 21, so that the overflow structure forms an annular liquid seal between the edge of the second guide shroud 7 and the inner wall of the treatment tank 1. The liquid falls through the overflow weir 21, while the gas cannot pass through. This implementation utilizes the principle of liquid sealing. Through the combination of overflow weir 21 and folded edge 22, the folded edge 22 of the second guide shroud 7 is inserted downward into the overflow weir 21. When the sprayed liquid falls into the overflow weir 21, it can form a liquid seal, which can both prevent gas from rising through this point and prevent water from accumulating at the edge of the second guide shroud 7. This reduces the spacing between the second guide shroud 7 and the third guide shroud 8. It allows for more layers of guide shrouds to be installed inside the treatment tank 1 within the same length, thereby improving washing efficiency and reducing space occupation.

[0036] Example 4: The surface of the arc-shaped plate is coated with a superhydrophobic coating. The upper cover 3 contains two sets of acoustic wave devices: one emits low-frequency standing waves at 200-500 Hz, and the other emits high-frequency ultrasonic waves at 20-50 kHz. Utilizing the acoustic radiation pressure of the standing waves, tiny droplets in the airflow gather and collide at the acoustic wave nodes, merging to form larger droplets. The high-frequency ultrasonic waves act on the gathered droplets, further breaking them up and stripping away the tiny particles attached to their surface through ultrasonic cavitation, while simultaneously accelerating the settling of the larger droplets. The system can automatically adjust the acoustic wave frequency and power according to the droplet concentration in the airflow, requiring no additional mechanical structure and exhibiting extremely low pressure drop (less than 50 Pa). The innovation of this solution lies in its non-contact acoustic wave manipulation of droplets, suitable for intercepting corrosive and highly viscous droplets, avoiding the corrosion and clogging problems of traditional mechanical structures. In this embodiment, the two acoustic wave devices can be placed inside the exhaust pipe or inside the upper cover 3, with good results.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A plasma incinerator exhaust gas treatment device, characterized in that, It includes a treatment tank, which has an air inlet pipe at one end and an air outlet pipe at the other end. The treatment tank is equipped with a flow guiding structure and a spray dust removal structure. The flow guiding structure includes multiple layers of flow guiding covers, which are sequentially arranged between the air inlet pipe and the air outlet pipe, so that the airflow can meander between the multiple layers of flow guiding covers and extend the gas flow path. The dust removal structure includes atomizing nozzles disposed between two adjacent layers of guide hoods, and the spraying direction of the atomizing nozzles is staggered with the airflow direction.

2. The plasma incinerator exhaust gas treatment equipment according to claim 1, characterized in that, The multi-layered air guide body includes a second air guide and a third air guide, both of which are provided with multiple pieces and are arranged alternately in sequence; The second flow guide is provided with a flow guide hole in the middle, and the third flow guide is provided with a flow guide groove on the edge. Multiple flow guide grooves are evenly distributed around the edge of the third flow guide.

3. The plasma incinerator exhaust gas treatment equipment according to claim 2, characterized in that, The second and third fairings are in any one of the following shapes: flat, conical, or spherical.

4. The plasma incinerator exhaust gas treatment equipment according to claim 2, characterized in that, The interior of the upper cover of the treatment tank is equipped with a condensation structure, which consists of several arc-shaped condensation plates arranged longitudinally.

5. The plasma incinerator exhaust gas treatment equipment according to claim 2, characterized in that, The second and third air guides are arranged with their middle parts protruding towards the air outlet end, and the highest point of the second air guide is lower than the highest point of the air guide groove.

6. The plasma incinerator exhaust gas treatment equipment according to claim 1, characterized in that, The dust removal structure also includes a water pump, with an inlet pipe at the inlet end of the water pump and a filter element at the end of the inlet pipe. The outlet end of the water pump is connected to the atomizing nozzles between each flow guide hood. The atomizing nozzle includes a nozzle frame and a nozzle head. The nozzle frame includes multiple concentric flow guide rings, each of which is connected to the outlet end of the water pump. Several nozzle heads are evenly spaced at the lower end of the flow guide rings. A water storage tank is formed at the bottom of the treatment tank, and the filter element is submerged in the liquid surface of the outlet tank.

7. The plasma incinerator exhaust gas treatment equipment according to claim 2, characterized in that, The edge of the second guide shroud is connected to the inner wall of the treatment tank through an overflow structure. The overflow structure includes an overflow weir and a folded edge. The folded edge is a vertical folded edge formed by folding the edge of the second guide shroud downwards. The overflow weir is an arc-shaped groove structure fixedly installed on the inner wall of the treatment tank. The folded edge maintains a liquid flow gap with the inner wall of the treatment tank and is inserted into the overflow weir, so that the overflow structure forms an annular liquid seal between the edge of the second guide shroud and the inner wall of the treatment tank. Liquid falls through the overflow weir, while gas cannot pass through.

8. The plasma incinerator exhaust gas treatment equipment according to claim 6, characterized in that, The bottom of the treatment tank is equipped with a labyrinth structure, which includes several arc-shaped baffles. These arc-shaped baffles form a multi-ring concentric ring baffle structure centered on the air inlet pipe. Each ring baffle includes multiple arc-shaped baffles located on the same virtual circle. Longitudinal openings are provided between the arc-shaped baffles, and the longitudinal openings on adjacent ring baffles are staggered. A guide plate is provided between the labyrinth structure and the multi-layer guide shroud. The guide plate is in the shape of an inverted cone, and its edge is sealed to the inner wall of the treatment tank. A downflow pipe is provided at the center. The downflow pipe is sleeved on the air inlet pipe at a certain distance, so that the spray water falls into the innermost ring baffle through the downflow pipe.

9. The plasma incinerator exhaust gas treatment equipment according to claim 8, characterized in that, The bottom of the treatment tank is also provided with a slag discharge structure. A slag discharge chamber is provided between the bottom of the labyrinth structure and the bottom of the treatment tank. A slag discharge pipe is provided on the side wall of the slag discharge chamber, and a slag discharge valve is provided on the slag discharge pipe. The slag discharge structure also includes a bottom support plate set at the bottom of the labyrinth structure. The bottom support plate is controlled to move up and down in the slag discharge chamber. When the bottom support plate moves up and fits against the bottom of the arc-shaped baffle, the bottom of each ring baffle forms a tight seal and is separated from the slag discharge pipe. When the bottom support plate moves down, the bottom of each ring baffle opens and connects with the slag discharge chamber.

10. The plasma incinerator exhaust gas treatment equipment according to claim 4, characterized in that, The surface of the arc-shaped plate is coated with a superhydrophobic coating, and the upper cover is equipped with two sets of acoustic wave devices. One set emits low-quality standing waves at a frequency of 200~500Hz; the other set emits high-frequency ultrasonic waves at a frequency of 20~50kHz.

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