Industrial waste gas treatment device

Abstract

The invention discloses an industrial waste gas treatment device, and relates to the technical field of industrial waste gas treatment. The device comprises a heat exchange chamber arranged on a base and further comprises a heat exchange assembly arranged in the heat exchange chamber, the heat exchange assembly is provided with a plurality of spiral heat exchange pipes used for conveying spraying liquid, and the spraying liquid is used for absorbing harmful substances in waste gas; a plurality of filter plates for filtering solid particles in waste gas are arranged in the filter chamber. The waste gas treatment device has the advantages that through heat exchange between waste gas and spraying liquid, the temperature of the spraying liquid is increased so as to increase the solubility of harmful substances in the waste gas by the spraying liquid, the temperature of the waste gas is reduced, damage to the filter plate during filtering is avoided, meanwhile, blockage of the filter plate is detected through the detection assembly, special-shaped filter holes are dredged, and the waste gas treatment effect is improved. The contact between the waste gas and the spraying liquid is promoted through a turbulent flow mechanism on the spraying assembly, and the spraying liquid is recycled through a recycling mechanism.

Description

Technical Field

[0001] This invention relates to the technical field of industrial waste gas treatment, and more particularly to an industrial waste gas treatment device. Background Technology

[0002] VOCs are volatile organic compounds with photochemical reactivity that can affect the environment and human health. During industrial production, a large amount of high-temperature waste gas containing VOCs, harmful gases and solid particles is generated. If directly emitted, it will seriously pollute the environment. Therefore, industrial waste gas needs to be purified and treated through special treatment equipment.

[0003] For example, a VOCs catalytic oxidation decomposition device for industrial waste gas treatment, disclosed in CN213050100U, includes a treatment box. An air inlet pipe is connected to the central axis on the left side of the treatment box. A fan is fixedly connected to the side of the air inlet pipe away from the treatment box. An exhaust pipe is fixedly connected to the top of the fan. An activated carbon filter, a photocatalytic filter, and an ultraviolet lamp are fixedly connected in sequence from left to right inside the treatment box.

[0004] Existing treatment devices typically send the waste gas directly into the filtration chamber for filtration. However, when high-temperature waste gas enters the filtration chamber directly, it can easily cause thermal damage to the filter plates and the filter media on the filter plates, leading to the failure of the filter plates' filtration capacity.

[0005] For example, in the aforementioned prior art, when the device filters exhaust gas, it directly filters the exhaust gas in the filtration stage. Since the high-temperature exhaust gas enters directly without pretreatment, it is very easy to cause thermal damage to the filter screen and surface filter media. This will not only cause the filter plate to fail in filtration performance, but also significantly shorten its service life. In addition, the filter plate needs to be disassembled for condition inspection after long-term use, which will interrupt the exhaust gas treatment process and affect the overall treatment efficiency of the device.

[0006] Therefore, there is an urgent need to design an industrial waste gas treatment device to solve the above problems. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an industrial waste gas treatment device that solves the problems mentioned in the background section.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an industrial waste gas treatment device, comprising a heat exchange chamber disposed on a base, and further comprising: The heat exchange chamber is equipped with heat exchange components, which are equipped with several spiral heat exchange tubes for conveying spray liquid. The spray liquid is used to absorb harmful substances in the exhaust gas. A filter chamber is mounted on a base. Inside the filter chamber are several filter plates for filtering solid particles in exhaust gas. Each filter plate has a detection component on one side for detecting the filtration effect of the filter plate. The detection component has a sealing cover for sealing the corresponding filter plate. The spray chamber is mounted on the base. Inside the spray chamber is a spray assembly for dissolving and absorbing harmful substances in the exhaust gas. The spray assembly contains multiple atomizing nozzles that atomize the spray liquid. An oxidation chamber is mounted on a base. Inside the oxidation chamber is a catalytic oxidation component for decomposing harmful substances in the exhaust gas. The catalytic oxidation component contains a catalyst plate for promoting the decomposition of harmful substances in the exhaust gas.

[0009] Preferably, a controller is fixedly installed on the oxidation chamber, a PLC controller is fixedly connected to the controller, a control panel is fixedly connected to the PLC controller, and the control panel and the PLC controller are electrically connected. The control panel uses a PLC controller to control the start-up, shutdown, and operating status of the detection component, spray component, and catalytic oxidation component. Preferably, the heat exchange assembly includes a first infusion pipe and a second infusion pipe disposed at both ends of the heat exchange chamber. Each spiral heat exchange pipe passes through the heat exchange chamber at both ends and is fixedly connected to one end of the first infusion pipe and the second infusion pipe, respectively. A first connecting pipe is fixedly connected between the air outlet of the heat exchange chamber and the air inlet of the filter chamber, and a first solenoid valve is disposed on the first connecting pipe.

[0010] Preferably, the spray assembly includes a spray pipe fixedly connected to one end of the second infusion pipe, and each atomizing nozzle is located inside the spray chamber. The liquid inlet of each atomizing nozzle is fixedly connected to the spray pipe. A liquid storage chamber is provided at the lower part of the spray chamber. A second connecting pipe is fixedly connected between the air inlet of the spray chamber and the air outlet of the filter chamber, and a second solenoid valve is fixedly connected to the second connecting pipe. A recovery mechanism is provided at the drain outlet on one side of the liquid storage chamber. The recovery mechanism is used to recover the sprayed spray liquid. The second infusion pipe is equipped with a flow disturbance mechanism, which is used to disrupt the airflow inside the spray chamber and promote full contact between the exhaust gas and the spray liquid.

[0011] Preferably, the recovery mechanism includes a three-way return pipe fixedly connected to one side of the liquid storage chamber, a first liquid pump fixedly connected to the three-way return pipe, the first liquid pump being used to extract the spray liquid from the liquid storage chamber, a three-way solenoid valve fixedly installed at the diversion point of the three-way return pipe, and a concentration sensor being provided on the three-way return pipe and located between the three-way solenoid valve and the first liquid pump, with the detection end of the concentration sensor extending into the interior of the three-way return pipe.

[0012] Preferably, the turbulence mechanism includes a transmission rod rotatably connected to the second infusion pipe, and a plurality of turbine blades are fixedly connected to the transmission rod and located inside the second infusion pipe. The turbine blades are used to convert the power of the spray liquid flow into the rotational power of the transmission rod. One end of the transmission rod passes through the spray chamber and is fixedly connected to a turbulence frame, which is used to promote full contact and mixing between the spray liquid and the exhaust gas.

[0013] Preferably, the catalytic oxidation assembly includes an adjustment chamber disposed on one side of the oxidation chamber, a catalyst plate fixedly installed inside the oxidation chamber, and a plasma generator and an ultraviolet generator slidably connected inside the oxidation chamber, which are respectively located above and below the catalyst plate; The regulating chamber is equipped with a spacing adjustment mechanism, which is used to adjust the spacing between the plasma generator and the ultraviolet generator.

[0014] Preferably, the spacing adjustment mechanism includes a servo motor fixedly installed on the upper part of the adjustment chamber, a bidirectional lead screw rotatably connected inside the adjustment chamber, the output end of the servo motor passing through the servo motor and fixedly connected to one end of the bidirectional lead screw, and two adjustment plates threadedly connected inside the adjustment chamber to the bidirectional lead screw, the two adjustment plates being fixedly connected to the plasma generator and the ultraviolet generator respectively.

[0015] Preferably, the detection component includes a plurality of third air supply pipes and a plurality of fourth air supply pipes fixedly connected to the lower part of the filter chamber, and a flow solenoid valve is fixedly installed on each of the third air supply pipes and the fourth air supply pipes. Each of the filter plates is fixedly connected to one side with several limiting rods, and the multiple limiting rods are slidably connected to the corresponding sealing cover. Each of the limiting rods is fitted with a first spring, and the two ends of each first spring are respectively fixed to one end of the limiting rod and one side of the sealing cover. Each of the sealing caps is provided with an air inlet pipe on one side, and a piston is slidably connected to each air inlet pipe. A second spring is fixedly installed between each piston and the corresponding air inlet pipe. Each sealing cap is provided with multiple air outlets that communicate with the air inlet pipe. Each third air supply pipe is sleeved on the corresponding air inlet pipe at one end, and each third air supply pipe is slidably connected to the corresponding air inlet pipe. One end of the multiple fourth air supply pipes is fixedly connected to the first air supply pipe, and a filter box is provided on the first air supply pipe. The upper part of the base is equipped with a gas storage mechanism, which is used to recover and store the processed gas.

[0016] Preferably, the gas storage mechanism includes a gas storage tank fixedly installed on the upper part of the base, a third connecting pipe is fixedly connected between the gas inlet of the gas storage tank and the exhaust port of the oxidation chamber, a booster pump is fixedly installed on the third connecting pipe, a second gas supply pipe is fixedly connected to the gas outlet of the gas storage tank, and the second gas supply pipe is fixedly connected to each of the third gas supply pipes.

[0017] This invention provides an industrial waste gas treatment device. It has the following beneficial effects: 1. When treating waste gas, this waste gas treatment device uses spiral heat exchange tubes inside the heat exchange chamber to fully exchange heat between the high-temperature waste gas and the spray liquid. This not only raises the temperature of the spray liquid, increasing its solubility for harmful substances in the waste gas and enhancing the subsequent spray absorption effect, but also cools the high-temperature waste gas. This prevents the high-temperature waste gas from directly entering the filter chamber and causing thermal damage to the filter material on the filter plate, which would otherwise lead to the filter plate losing its filtering capacity and reducing its service life.

[0018] 2. When treating waste gas, this waste gas treatment device disturbs the waste gas in the spray chamber through the turbulence mechanism in the spray assembly, breaking the stable flow state of the airflow, promoting full contact and mixing between the spray liquid sprayed from the atomizing nozzle and the waste gas, improving the dissolution and absorption efficiency of harmful substances, and then through the synergistic action of the recovery mechanism, accurately recovers the spray liquid that still has dissolving ability and returns it to the first infusion pipe for recycling, reducing spray liquid waste and lowering operating consumable costs.

[0019] 3. When treating waste gas, this waste gas treatment device adjusts the distance between the ultraviolet generator and the plasma generator in the catalytic oxidation component through a spacing adjustment mechanism. In actual operation, the spacing can be adjusted according to the difference in the concentration of harmful substances in the waste gas. When the concentration is high, the spacing is reduced to improve the oxidation and decomposition efficiency, and when the concentration is low, the spacing is increased to reduce energy consumption. This avoids energy redundancy or incomplete treatment caused by a fixed spacing, thereby reducing the operating cost of the equipment.

[0020] 4. During the waste gas treatment process, this waste gas treatment device uses a detection component to test the filtration efficiency of the filter plates, allowing staff to accurately determine whether the filter plates need to be replaced. This avoids waste caused by overuse of the filter plates leading to filtration failure or premature replacement. At the same time, during the testing process, high-pressure gas is sprayed onto the filter plates through the air outlet on the sealed cover, flushing the irregularly shaped filter holes of the filter plates and effectively removing impurities that are clogging the filter holes, ensuring that the filter plates are unobstructed and thus extending their service life.

[0021] In summary, this invention enables efficient heat exchange between the spray liquid and the high-temperature waste gas during the high-temperature waste gas transportation process. This not only increases the temperature of the spray liquid, promoting its efficiency in dissolving harmful substances in the waste gas, but also reduces the temperature of the high-temperature waste gas, preventing heat loss to the filter plates when in contact with them. Furthermore, it allows for periodic self-inspection and unclogging of the filter plates, effectively extending their service life and resulting in better overall waste gas treatment.

[0022] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0023] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of an industrial waste gas treatment device proposed in this invention; Figure 2 for Figure 1 A schematic diagram of the structure after rotation at a certain angle; Figure 3 for Figure 2 Schematic diagram of the structure of the heat exchanger chamber; Figure 4 for Figure 3 Schematic diagram of the internal structure of the heat exchanger chamber; Figure 5 for Figure 2 Enlarged structural view of the central spray chamber; Figure 6 for Figure 5 Schematic diagram of the internal structure of the central spray chamber; Figure 7 for Figure 1 A schematic diagram of the recycling mechanism; Figure 8 for Figure 7 Schematic diagram of the central turbulence mechanism; Figure 9 for Figure 2 Schematic diagram of the intermediate oxidation chamber; Figure 10 for Figure 9 Schematic diagram of the internal structure of the oxidation chamber; Figure 11 for Figure 10 Schematic diagram of the center-pitch adjustment mechanism; Figure 12 for Figure 1 Schematic diagram of the middle filtration chamber; Figure 13 for Figure 12 Schematic diagram of the internal structure of the middle filtration chamber; Figure 14 for Figure 13 Schematic diagram of the structure of the central sealing cap; Figure 15 for Figure 14 Schematic diagram of the internal structure of the central sealing cap; Figure 16 for Figure 15 Internal side view of the central sealing cap; Figure 17 for Figure 2 Schematic diagram of the gas storage mechanism; Figure 18 for Figure 17 A schematic diagram of the gas storage mechanism rotating at a certain angle.

[0024] In the diagram: 1. Base; 2. Heat exchange chamber; 3. Filtration chamber; 4. Spray chamber; 5. Oxidation chamber; 6. First infusion pipe; 7. Spiral heat exchange pipe; 8. Filter plate; 9. Second infusion pipe; 10. Spray nozzle; 11. Atomizing nozzle; 12. Drive rod; 13. Turbine vane; 14. Baffle frame; 15. Liquid storage chamber; 16. Three-way return pipe; 17. First pump; 18. Concentration sensor; 19. Three-way solenoid valve; 20. Catalyst plate; 21. Ultraviolet generator; 22. 23. Plasma generator; 24. Adjustment chamber; 25. Adjustment plate; 26. Bidirectional lead screw; 27. Servo motor; 28. First gas supply pipe; 29. ​​Booster pump; 30. Gas storage tank; 31. Second gas supply pipe; 32. Third gas supply pipe; 33. Fourth gas supply pipe; 34. Flow solenoid valve; 35. Limit rod; 36. Sealing cover; 37. First spring; 38. Inlet pipe; 39. Piston; 40. Second spring; 41. Gas supply port; 42. Filter box; 43. Controller. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] Example 1: Refer to Figure 1 - Figure 2 An industrial waste gas treatment device includes a heat exchange chamber 2 mounted on a base 1. The base 1 supports functional components such as the heat exchange chamber 2, filter chamber 3, spray chamber 4, oxidation chamber 5, and gas storage tank 29, ensuring the stability of the equipment during waste gas treatment. The main components of the exhaust gas are: volatile organic compounds (VOCs) such as toluene, acidic gases such as hydrogen sulfide, and solid particles; This processing device also includes: The heat exchange chamber 2 is equipped with a heat exchange assembly, which includes several spiral heat exchange tubes 7 installed inside the heat exchange chamber 2. The filter chamber 3 is equipped with several filter plates 8 for filtering solid particles in the exhaust gas. The filter plates 8 are used to separate the gas and solids in the cooled exhaust gas. The filter plates 8, together with the irregularly shaped filter holes on the filter plates 8, intercept large-diameter pollutants such as dust and solid particles in the exhaust gas. The heat exchange component is used to increase the contact area through the spiral heat exchange tube 7 to realize the heat exchange between the high temperature exhaust gas and the spray liquid. It can both raise the temperature of the spray liquid to improve the solubility of harmful substances in the exhaust gas and lower the temperature of the exhaust gas to avoid damage to the filter media on the filter plate 8 due to excessive exhaust temperature, thus extending the service life of the filter plate 8. Heat exchange chamber 2 provides a closed space for heat exchange between high-temperature exhaust gas and spray liquid, isolating the high-temperature exhaust gas from the external environment, avoiding pollution caused by exhaust gas leakage, ensuring heat exchange efficiency, and preventing operators from being burned by contact with high-temperature components.

[0027] The filter chamber 3 is set on the base 1. The filter chamber 3 is used to provide a filtration space for the exhaust gas and to accommodate the filter plate 8 and the detection components. The filter chamber 3 is connected by a flange to facilitate the installation and removal of the filter plate 8. The filter plate 8 is equipped with irregularly shaped filter holes. The irregular shape design of the filter holes enhances the interception effect and achieves efficient gas-solid separation of exhaust gas and solid impurities. Each filter plate 8 is equipped with a detection component on one side for detecting the filtration effect of the filter plate 8. The detection component is used to periodically detect the filtration efficiency of each filter plate 8 and perform high-pressure unclogging of the irregularly shaped filter holes to determine whether the filter plate 8 needs to be replaced. This avoids waste caused by overuse or premature replacement of the filter plate 8, extends the service life of the filter plate 8, and the gas after flushing is discharged after the filter box 41 adsorbs residual harmful substances. This balances detection accuracy and environmental protection, and provides stable filtration conditions for the subsequent waste gas treatment unit.

[0028] Spray chamber 4, set on base 1, provides space for the exhaust gas to come into contact with the spray liquid, so as to achieve the dissolution and absorption of harmful substances. The interior space of spray chamber 4 is spacious, and the gas-liquid contact time is sufficient to improve the absorption efficiency. Spray chamber 4 is made of stainless steel, which can withstand the corrosion of spray liquid and extend its service life. The spray chamber 4 is equipped with a spray assembly for dissolving and absorbing harmful substances in the exhaust gas.

[0029] Oxidation chamber 5 is set on base 1. Oxidation chamber 5 provides reaction space for the catalytic oxidation of harmful gases in VOCs. Oxidation chamber 5 seals the exhaust gas to prevent gas leakage during the oxidation process. Several guide rails are set inside oxidation chamber 5. The guide rails provide guidance for the sliding of plasma generator and ultraviolet generator to ensure stability when the spacing is adjusted. Oxidation chamber 5 is equipped with a catalytic oxidation component for decomposing harmful substances. This component thoroughly decomposes the harmful substances remaining in the exhaust gas after spray absorption. The harmful substances are catalytically oxidized in oxidation chamber 5, completely decomposing them into carbon dioxide and water without secondary pollution. The reaction equation is as follows: ; in: —Harmful substances in exhaust gas; O2—is oxygen in the exhaust gas; CO2—is the carbon dioxide produced after catalytic oxidation; H2O—is the water produced after catalytic oxidation; A controller 42 is fixedly installed on the oxidation chamber 5. A PLC controller is fixedly connected to the controller 42. A control panel is fixedly connected to the PLC controller. The control panel and the PLC controller are electrically connected. The operator inputs control commands through the control panel, and the control panel transmits signals to the PLC controller to realize the operator's operation and control of the equipment. The control panel uses a PLC controller to control the start-up, shutdown, and operating status of the detection, spraying, and catalytic oxidation components, achieving automated coordination. This enables the automated collaborative operation of various functional modules, making it easy to operate with minimal operator intervention and resulting in a high degree of automation.

[0030] Example 2: Refer to Figure 3 - Figure 8 The technical solution that differs from that of Embodiment 1 is as follows: a number of spiral heat exchange tubes 7 for heat exchange are provided on the heat exchange component. A spray liquid for absorbing harmful substances in the waste gas flows inside the spiral heat exchange tubes 7. The spray liquid is a weakly alkaline mixture composed of deionized water as the base and sodium bicarbonate, low foaming surfactant and disodium EDTA, etc., for efficient absorption of VOCs and acidic components in industrial waste gas. Each spiral heat exchange tube 7 passes through the heat exchange chamber 2 at both ends and is fixedly connected to the first liquid delivery tube 6 and the second liquid delivery tube 9 respectively. The spiral heat exchange tube 7 is used to transport the spray liquid, increase the contact area between the spray liquid and the exhaust gas in the heat exchange chamber 2, improve the heat exchange efficiency, heat the spray liquid and cool the exhaust gas. A first connecting pipe is fixedly connected between the air outlet of the heat exchange chamber 2 and the air inlet of the filter chamber 3, and a first solenoid valve is installed on the first connecting pipe to transport the exhaust gas after heat exchange to the filter chamber 3.

[0031] In a further embodiment, the spray assembly is provided with a plurality of atomizing nozzles 11 for atomizing the spray liquid. The atomizing nozzles 11 are high-pressure atomizing nozzles 11, which atomize the spray liquid into droplets and spray them into the spray chamber 4. The atomized spray liquid has a large surface area and can come into more full contact with the exhaust gas, thereby greatly improving the dissolution and absorption efficiency of harmful gases in the exhaust gas. The spray assembly includes a spray pipe 10 fixedly connected to one end of the second infusion pipe 9, and each atomizing nozzle 11 is located inside the spray chamber 4. The inlet of each atomizing nozzle 11 is fixedly connected to the spray pipe 10 for evenly distributing the heated spray liquid to each atomizing nozzle 11. A storage chamber 15 is provided at the bottom of the spray chamber 4 for collecting the spray liquid after spraying. A second connecting pipe is fixedly connected between the air inlet of the spray chamber 4 and the air outlet of the filter chamber 3, and a second solenoid valve is fixedly connected to the second connecting pipe for conveying the filtered exhaust gas to the spray chamber 4.

[0032] In a further embodiment, a recovery mechanism is provided at the drain outlet on one side of the liquid storage chamber 15, and the recovery mechanism is used to recover the sprayed spray liquid. The recycling mechanism includes a three-way return pipe 16 fixedly connected to one side of the liquid storage chamber 15. A first liquid pump 17 is fixedly connected to the three-way return pipe 16. The three-way return pipe 16 is used to provide a dual channel for the return and discharge of the spray liquid, so as to realize the integrated design of the recycling and reuse of the spray liquid and the discharge of waste liquid. The first liquid pump 17 is used to extract the spray liquid in the liquid storage chamber 15 and transport it to the three-way return pipe 16 to meet the circulation pressure requirements of the spray liquid. A three-way solenoid valve 19 is fixedly installed at the shunt of the three-way return pipe 16. A concentration sensor 18 is provided on the three-way return pipe 16 and between the three-way solenoid valve 19 and the first liquid pump 17. The detection end of the concentration sensor 18 extends into the interior of the three-way return pipe 16. The concentration sensor 18 is used to determine whether the spray liquid still has dissolving capacity, providing a signal basis for the switching of the three-way solenoid valve 19. The three-way solenoid valve 19 can switch the passage of the three-way return pipe 16 according to the detection result of the concentration sensor 18. When the concentration is lower than the preset value, it is connected to the return passage of the second infusion pipe 9. When the concentration is higher than the preset threshold, it is connected to the discharge passage of the waste liquid collection tank, realizing the accurate recycling and reuse of the spray liquid and reducing waste.

[0033] In a further embodiment, a turbulence-disrupting mechanism is provided on the second infusion pipe 9. The turbulence-disrupting mechanism is used to disrupt the airflow inside the spray chamber 4 and promote full contact between the exhaust gas and the spray liquid. The turbulence-disrupting mechanism includes a transmission rod 12 rotatably connected to the second infusion pipe 9. Multiple turbine blades 13 are fixedly connected to the transmission rod 12 and located inside the second infusion pipe 9. The transmission rod 12 is used to transmit the rotational power of the turbine blades 13 to drive the turbulence-disrupting frame 14 to rotate. The turbine blades 13 are used to convert the power of the spray liquid flow into the rotational power of the transmission rod 12. One end of the transmission rod 12 passes through the spray chamber 4 and is fixedly connected to a baffle 14. The baffle 14 is used to promote full contact and mixing between the spray liquid and the exhaust gas. When the baffle 14 rotates, it disturbs the airflow inside the spray chamber 4, breaks the stable flow state of the airflow, and makes the exhaust gas form turbulence, which mixes fully with the atomized spray liquid. This avoids the problem of insufficient contact caused by the stratification of exhaust gas and spray liquid, and improves the absorption efficiency of harmful substances.

[0034] Example 3: Refer to Figure 9 - Figure 18 The technical difference between this embodiment and Embodiment 1 lies in the following: The catalytic oxidation assembly is equipped with a catalyst plate 20 for promoting the decomposition of harmful substances in the exhaust gas. The catalyst plate 20 is fixedly installed inside the oxidation chamber 5. A plasma generator 22 and an ultraviolet generator 21 are slidably connected inside the oxidation chamber 5 and are located above and below the catalyst plate 20, respectively. The catalyst plate 20 is located between the plasma generator 22 and the ultraviolet generator 21, and is used to decompose VOCs into CO2 and H2O without secondary pollution. Ion generator 22 generates high-energy plasma, which ionizes oxygen and water molecules in the waste gas to generate highly active free radicals such as •OH and •O, which are used to break the chemical bonds in harmful substances and provide active species for subsequent catalytic oxidation reactions. Ultraviolet generator 21 emits dual-band ultraviolet light to directly break the molecular structure in harmful substances and activate the active components in catalyst plate 20. Together with plasma generator 22, it enhances the concentration of free radicals and improves catalytic oxidation efficiency. In a further embodiment, the catalytic oxidation assembly includes an adjustment chamber 23 disposed on one side of the oxidation chamber 5, and a spacing adjustment mechanism is provided on the adjustment chamber 23 for adjusting the distance between the plasma generator 22 and the ultraviolet generator 21. The adjustment mechanism dynamically adjusts the distance between the ultraviolet generator 21 and the plasma generator 22 inside the oxidation chamber 5 according to the concentration of harmful substances in the industrial waste gas. For high-concentration waste gas, the distance is reduced to enhance the free radical concentration and catalytic oxidation intensity; for low-concentration waste gas, the distance is increased to avoid energy redundancy. This adapts to different operating conditions, improves the processing efficiency and flexibility of the catalytic oxidation component, and reduces operating costs. The spacing adjustment mechanism includes a servo motor 26 fixedly installed on the upper part of the adjustment chamber 23. A bidirectional lead screw 25 is rotatably connected inside the adjustment chamber 23. The output end of the servo motor 26 passes through the servo motor 26 and is fixedly connected to one end of the bidirectional lead screw 25. Two adjustment plates 24 that are threadedly engaged with the bidirectional lead screw 25 are slidably connected inside the adjustment chamber 23. The two adjustment plates 24 are fixedly connected to the plasma generator 22 and the ultraviolet generator 21, respectively. The servo motor 26 provides power for the spacing adjustment and drives the bidirectional lead screw 25 to rotate. The bidirectional lead screw 25 is used to convert the rotational motion of the servo motor 26 into the linear motion of the adjustment plate 24, thereby adjusting the distance between the plasma generator 22 and the ultraviolet generator 21 to adapt to different concentrations of exhaust gas.

[0035] In a further embodiment, the detection assembly is provided with a sealing cover 35 for sealing the corresponding filter plate 8. The sealing cover 35 is used to adhere to one side of the filter plate 8 during detection to form a closed space and prevent high-pressure gas leakage. The detection assembly includes a plurality of third gas supply pipes 31 and a plurality of fourth gas supply pipes 32 fixedly connected to the lower part of the filter chamber 3. The third gas supply pipes 31 are used to deliver high-pressure gas to the sealing cover 35 and push the sealing cover 35 to move towards one side of the filter plate 8 until it adheres to one side of the filter plate 8. The fourth gas supply pipes 32 are used to discharge the gas and solid particles carried after detection. Both the third gas supply pipe 31 and the fourth gas supply pipe 32 are fixedly equipped with flow solenoid valves 33. The flow solenoid valves 33 are used to control the opening and closing of the gas supply pipe and the gas flow, thereby realizing the independent detection and unblocking of a single filter plate 8, avoiding the influence of other factors during detection, and improving the detection accuracy. Each filter plate 8 has several limiting rods 34 fixedly connected to one side. The multiple limiting rods 34 are slidably connected to the corresponding sealing cover 35. The limiting rods 34 are used to provide sliding guidance for the sealing cover 35, limit the movement range of the sealing cover 35, and make the sealing cover 35 accurately fit the filter plate 8, avoiding sealing failure caused by displacement, thereby improving the reliability of detection and unblocking. Each limiting rod 34 is fitted with a first spring 36, and the two ends of each first spring 36 are respectively fixed to one end of the limiting rod 34 and one side of the sealing cover 35. The first spring 36 is used to pull the sealing cover 35 away from the filter plate 8 when the sealing cover 35 does not squeeze the filter plate 8, so as to avoid the filter plate 8 and the sealing cover 35 sticking together during the filtration process, which would prevent the exhaust gas from passing through the filter plate 8 and affect the filtration effect. Each third gas supply pipe 31 is sleeved on one end of the corresponding air inlet pipe 37, and each third gas supply pipe 31 is slidably connected to the corresponding air inlet pipe 37. Each sealing cover 35 is provided with an air inlet pipe 37 on one side. The air inlet pipe 37 is used to guide the high-pressure gas delivered by the third gas supply pipe 31 into the interior of the sealing cover 35. Each air inlet pipe 37 is slidably connected to a piston 38. Each piston 38 and the corresponding air inlet pipe 37 are fixedly installed with a second spring 39. The diameter of the piston 38 is adapted to the inner diameter of the air inlet pipe 37 and is used to control the opening and closing of the air inlet pipe 37. The second spring 39 will only be compressed when the high-pressure gas pressure reaches the set value to avoid low-pressure gas leakage, ensure sufficient gas pressure during dredging, and improve the impurity flushing effect. Each sealing cap 35 is provided with multiple air delivery holes 40 that communicate with the air inlet pipe 37. The air delivery holes 40 are used to evenly spray the high-pressure gas delivered by the air inlet pipe 37 onto the surface of the filter plate 8, flush out the impurities that are blocked in the irregular filter holes on the filter plate 8, and ensure the unblocking effect of the filter plate 8. Multiple fourth gas supply pipes 32 are fixedly connected to a first gas supply pipe 27 at one end. A filter box 41 is provided on the first gas supply pipe 27. The first gas supply pipe 27 is used to collect the gas delivered by the multiple fourth gas supply pipes 32 and deliver it to the filter box 41. The filter box 41 is used to adsorb solid particles washed down from the filter plate 8 by the high-pressure gas, so as to avoid the solid particles being directly discharged with the gas and causing pollution. In a further embodiment, a gas storage mechanism is provided on the upper part of the base 1. The gas storage mechanism is used to recover and store the treated gas. The gas storage mechanism includes a gas storage tank 29 fixedly installed on the upper part of the base 1. A booster pump 28 is fixedly installed on the third connecting pipe. The gas storage tank 29 is used to store the clean gas after the oxidation chamber 5 is treated. In conjunction with the booster pump 28, the gas is pressurized to form high-pressure gas, which provides a high-pressure gas source for the unblocking detection of the filter plate 8. At the same time, the clean gas is recovered and stored for subsequent reuse. A third connecting pipe is fixedly connected between the air inlet of the gas storage tank 29 and the exhaust port of the oxidation chamber 5. The third connecting pipe is used to transport the clean gas processed by the oxidation chamber 5 to the gas storage tank 29. A second gas supply pipe 30 is fixedly connected to the air outlet of the gas storage tank 29. The second gas supply pipe 30 is fixedly connected to each of the third gas supply pipes 31. The second gas supply pipe 30 is used to transport the high-pressure gas in the gas storage tank 29 to the third gas supply pipe 31 in the detection component.

[0036] The specific working principle of this waste gas treatment device is as follows: Operators input control commands and set core operating parameters through the control panel on the controller 42. The control panel transmits the command signals to the built-in PLC controller, which then starts each component to enter standby mode, completing the preparation work before the equipment runs. The whole process requires little manual intervention and has a high degree of automation. After preparation, the high-temperature waste gas generated by industrial production is introduced into the heat exchange chamber 2. At the same time, the spray liquid is diverted through the first liquid delivery pipe 6 to multiple spiral heat exchange tubes 7 inside the heat exchange chamber 2. The spiral structure of the spiral heat exchange tubes 7 increases the gas-liquid contact area, thereby achieving efficient heat exchange between the high-temperature waste gas outside the spiral heat exchange tubes 7 and the spray liquid inside the spiral heat exchange tubes 7. During the heat exchange process, the spray liquid absorbs heat from the exhaust gas and heats up to increase the solubility of the spray liquid for harmful substances. The exhaust gas is cooled down to prevent high temperature damage to the filter medium on the filter plate 8. After the heat exchange, the PLC controller synchronously controls the first solenoid valve on the first connecting pipe to open and introduce the cooled exhaust gas into the filter chamber 3. The spray liquid after the heat exchange is transported to the spray pipe 10 through the second liquid delivery pipe 9. After being cooled by heat exchange, the exhaust gas enters the filter chamber 3 through the first connecting pipe. In the closed filtration space provided by the filter chamber 3, it passes through multiple filter plates 8 in sequence. The irregularly shaped filter holes on the surface of the filter plates 8 effectively intercept large-diameter pollutants such as dust and solid particles in the exhaust gas, thereby achieving the separation of exhaust gas and solid particles. After filtration and impurity removal, the exhaust gas enters the spray chamber 4 through the second solenoid valve on the second connecting pipe under the control of the PLC controller. At the same time, the spray liquid, which has been heated by heat exchange, is atomized into fine droplets through multiple atomizing nozzles 11 and evenly sprayed into the interior of the spray chamber 4. During this process, the spray liquid flowing in the second liquid delivery pipe 9 drives the turbine blades 13 to rotate, which in turn drives the baffle frame 14 in the spray chamber 4 to rotate through the transmission rod 12. This turbulence is created by disturbing the airflow, breaking the gas-liquid stratification, and allowing the atomized spray liquid to fully contact and mix with the exhaust gas, thereby significantly improving the efficiency of the spray liquid in dissolving and absorbing harmful substances in the exhaust gas. After absorption, the spray liquid drips into the storage chamber 15 at the bottom of the spray chamber 4. After the spray liquid in the storage chamber 15 accumulates to a certain amount, the first pump 17 draws the spray liquid in the storage chamber 15 into the three-way return pipe 16. The concentration sensor 18 detects the concentration of harmful substances in the spray liquid in real time. If the concentration is lower than the preset threshold, the PLC controller controls the three-way solenoid valve 19 to open the return path of the second delivery pipe 9 to realize the recycling of the spray liquid. If the concentration is higher than the preset threshold, it switches to the discharge path of the waste liquid collection box to complete the accurate recovery of the spray liquid and the treatment of waste liquid, reducing resource waste and operating costs. The waste gas that still retains a small amount of VOCs after spray absorption enters the oxidation chamber 5 for deep purification. The PLC controller starts the servo motor 26 on the regulating chamber 23 according to the concentration of harmful substances in the waste gas, drives the bidirectional lead screw 25 to rotate, and drives the two regulating plates 24 that are threaded with the bidirectional lead screw 25 to slide synchronously in opposite directions, thereby adjusting the distance between the plasma generator 22 and the ultraviolet generator 21. When treating high-concentration waste gas, the distance is reduced to enhance the concentration of free radicals and the intensity of catalytic oxidation. When treating low-concentration waste gas, the distance is increased to avoid energy redundancy and reduce energy consumption. After adjustment, the plasma generator 22 generates high-energy plasma, which ionizes oxygen and water molecules in the exhaust gas to generate highly active free radicals such as ·OH and ·O. The ultraviolet generator 21 emits dual-band ultraviolet light, which directly breaks down the molecular structure of harmful substances and activates the active components of the catalyst plate 20. Harmful substances and highly active free radicals are enriched on the surface of the catalyst plate 20 and undergo catalytic oxidation under low temperature conditions, eventually decomposing into harmless substances such as CO2 and H2O. The clean gas after catalytic oxidation is transported to the gas storage tank 29 through the third connecting pipe. During the journey, the gas is pressurized by the booster pump 28 and stored in the gas storage tank 29 for subsequent use. After the equipment has been used for a period of time, the filter plate 8 needs to be inspected and cleared. At this time, the PLC controller detects and clears the filtration effect of a single filter plate 8. The PLC controller opens the flow solenoid valve 33 on the side of the corresponding filter plate 8. The gas tank 29 delivers high-pressure gas through the second gas pipe 30. The high-pressure gas enters the air inlet pipe 37 through the third gas pipe 31. The high-pressure gas pushes the sealing cover 35 to move, so that the sealing cover 35 is tightly attached to the side of the corresponding filter plate 8. Then, the flow solenoid valve 33 is controlled to increase the gas pressure, so as to push the piston 38 to slide on the air inlet pipe 37, thereby compressing the second spring 39, so that the high-pressure gas is evenly sprayed onto the surface of the filter plate 8 through the air outlet 40 on the sealing cover 35, flushing out the impurities in the blocked irregular filter holes. The gas that is expelled carries a small amount of residual harmful substances. It is collected in the first gas pipe 27 through the fourth gas pipe 32 and then discharged after being purified by the activated carbon adsorption layer in the filter box 41 to avoid secondary pollution. When gas passes through the fourth gas supply pipe 32, the flow solenoid valve 33 on it detects the gas flow rate. If the flow rate is less than the set value within a certain period of time, it indicates that the filter plate 8 is damaged and has reached its maximum service life. At this time, the filter plate 8 should be replaced. If it is greater than the set value, there is no need to replace it. After the unblocking is completed, the flow solenoid valve 33 closes, the second spring 39 pushes the piston 38 to reset, and the first spring 36 pulls the sealing cover 35 away from the filter plate 8 to ensure that the filtration process proceeds normally, effectively extending the service life of the filter plate 8 and avoiding waste caused by excessive use leading to reduced filtration effect or premature replacement.

[0037] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An industrial waste gas treatment device, comprising a heat exchange chamber (2) disposed on a base (1), characterized in that, Also includes: The heat exchange chamber (2) is equipped with a heat exchange component, and the heat exchange component is equipped with several spiral heat exchange tubes (7) for conveying the spray liquid. The spray liquid is used to absorb harmful substances in the exhaust gas. The filter chamber (3) is set on the base (1). Inside the filter chamber (3) are several filter plates (8) for filtering solid particles in the exhaust gas. Each filter plate (8) has a detection component on one side for detecting the filtration effect of the filter plate (8). The detection component has a sealing cover (35) for sealing the corresponding filter plate (8). Spray chamber (4) is set on base (1). Inside spray chamber (4) is a spray assembly for dissolving and absorbing harmful substances in waste gas. Inside spray assembly are multiple atomizing nozzles (11) for atomizing spray liquid. An oxidation chamber (5) is set on a base (1). Inside the oxidation chamber (5) is a catalytic oxidation component for decomposing harmful substances in the waste gas. Inside the catalytic oxidation component is a catalyst plate (20) for promoting the decomposition of harmful substances in the waste gas.

2. The industrial waste gas treatment device according to claim 1, characterized in that, A controller (42) is fixedly installed on the oxidation chamber (5), a PLC controller is fixedly connected to the controller (42), a control panel is fixedly connected to the PLC controller, and the control panel and the PLC controller are electrically connected. The control panel uses a PLC controller to control the start-up, shutdown, and operation status of the detection component, spray component, and catalytic oxidation component.

3. The industrial waste gas treatment device according to claim 1, characterized in that, The heat exchange assembly includes a first infusion pipe (6) and a second infusion pipe (9) disposed at both ends of the heat exchange chamber (2). Both ends of each spiral heat exchange pipe (7) pass through the heat exchange chamber (2) and are fixedly connected to one end of the first infusion pipe (6) and the second infusion pipe (9), respectively. A first connecting pipe is fixedly connected between the air outlet of the heat exchange chamber (2) and the air inlet of the filter chamber (3), and a first solenoid valve is disposed on the first connecting pipe.

4. The industrial waste gas treatment device according to claim 3, characterized in that, The spray assembly includes a spray pipe (10) fixedly connected to one end of the second infusion pipe (9), and each atomizing nozzle (11) is located inside the spray chamber (4). The inlet of each atomizing nozzle (11) is fixedly connected to the spray pipe (10). A storage chamber (15) is provided at the lower part of the spray chamber (4). A second connecting pipe is fixedly connected between the air inlet of the spray chamber (4) and the air outlet of the filter chamber (3), and a second solenoid valve is fixedly connected to the second connecting pipe. A recovery mechanism is provided at the drain outlet on one side of the liquid storage chamber (15), which is used to recover the sprayed liquid. The second infusion pipe (9) is equipped with a flow disturbance mechanism, which is used to disturb the airflow inside the spray chamber (4) and promote full contact between the exhaust gas and the spray liquid.

5. An industrial waste gas treatment device according to claim 4, characterized in that, The recovery mechanism includes a three-way return pipe (16) fixedly connected to one side of the liquid storage chamber (15). A first liquid pump (17) is fixedly connected to the three-way return pipe (16). The first liquid pump (17) is used to extract the spray liquid in the liquid storage chamber (15). A three-way solenoid valve (19) is fixedly installed at the diversion point of the three-way return pipe (16). A concentration sensor (18) is provided on the three-way return pipe (16) and between the three-way solenoid valve (19) and the first liquid pump (17). The detection end of the concentration sensor (18) extends into the interior of the three-way return pipe (16).

6. An industrial waste gas treatment device according to claim 4, characterized in that, The turbulence mechanism includes a transmission rod (12) rotatably connected to the second infusion pipe (9). Multiple turbine blades (13) are fixedly connected to the transmission rod (12) and inside the second infusion pipe (9). The turbine blades (13) are used to convert the power of the spray liquid flow into the rotational power of the transmission rod (12). One end of the transmission rod (12) passes through the spray chamber (4) and is fixedly connected to a turbulence frame (14). The turbulence frame (14) is used to promote full contact and mixing between the spray liquid and the exhaust gas.

7. An industrial waste gas treatment device according to claim 4, characterized in that, The catalytic oxidation assembly includes an adjustment chamber (23) disposed on one side of the oxidation chamber (5), a catalyst plate (20) fixedly installed inside the oxidation chamber (5), and a plasma generator (22) and an ultraviolet generator (21) slidably connected inside the oxidation chamber (5), which are located above and below the catalyst plate (20), respectively. The regulating chamber (23) is equipped with a spacing adjustment mechanism, which is used to adjust the distance between the plasma generator (22) and the ultraviolet generator (21).

8. An industrial waste gas treatment device according to claim 7, characterized in that, The spacing adjustment mechanism includes a servo motor (26) fixedly installed on the upper part of the adjustment chamber (23). A bidirectional lead screw (25) is rotatably connected inside the adjustment chamber (23). The output end of the servo motor (26) passes through the servo motor (26) and is fixedly connected to one end of the bidirectional lead screw (25). Two adjustment plates (24) that are threadedly engaged with the bidirectional lead screw (25) are slidably connected inside the adjustment chamber (23). The two adjustment plates (24) are fixedly connected to the plasma generator (22) and the ultraviolet generator (21) respectively.

9. An industrial waste gas treatment device according to claim 7, characterized in that, The detection assembly includes multiple third air supply pipes (31) and multiple fourth air supply pipes (32) fixedly connected to the lower part of the filter chamber (3), and a flow solenoid valve (33) is fixedly installed on each of the third air supply pipes (31) and the fourth air supply pipes (32). Each of the filter plates (8) is fixedly connected to one side with several limiting rods (34), and the multiple limiting rods (34) are slidably connected to the corresponding sealing cover (35). Each of the limiting rods (34) is sleeved with a first spring (36), and the two ends of each first spring (36) are respectively fixed to one end of the limiting rod (34) and one side of the sealing cover (35). Each of the sealing caps (35) is provided with an air inlet pipe (37) on one side, and a piston (38) is slidably connected to each air inlet pipe (37). A second spring (39) is fixedly installed between each piston (38) and the corresponding air inlet pipe (37). Each of the sealing caps (35) is provided with multiple air supply holes (40) communicating with the air inlet pipe (37). Each third air supply pipe (31) is sleeved on the corresponding air inlet pipe (37) at one end, and each third air supply pipe (31) is slidably connected to the corresponding air inlet pipe (37). One end of the multiple fourth air supply pipes (32) is fixedly connected to the first air supply pipe (27), and a filter box (41) is provided on the first air supply pipe (27). The base (1) is provided with a gas storage mechanism on its upper part, which is used to recover and store the processed gas.

10. An industrial waste gas treatment device according to claim 9, characterized in that, The gas storage mechanism includes a gas storage tank (29) fixedly installed on the upper part of the base (1). A third connecting pipe is fixedly connected between the gas inlet of the gas storage tank (29) and the exhaust port of the oxidation chamber (5). A booster pump (28) is fixedly installed on the third connecting pipe. A second gas supply pipe (30) is fixedly connected to the gas outlet of the gas storage tank (29). The second gas supply pipe (30) is fixedly connected to each of the third gas supply pipes (31).

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