A device for treating a catalytic environment using plasma

Abstract

A device for utilizing plasma to coordinate catalytic environment treatment comprises a filter, a plasma purifier, a centrifugal fan and a spray tower. The air filter outlet at the rear of the dry filter is connected to the plasma purifier through a closed air cylinder, the plasma purifier is connected to the centrifugal fan through a rear air cylinder, and the centrifugal fan is connected to the middle structure of the spray tower through an arc-shaped lifting cylinder. The plasma purifier is provided with a corona zone between its air inlet cylinder and the air filter outlet, an electrode plate or an electrode rod is provided in the corona zone, a corona wire is introduced into the electrode plate, catalyst spreading plates are provided on both sides of the corona zone, lifting rollers are provided on the side of the catalyst spreading plates, and a recovery zone is also provided at the bottom of the corona zone. A filtered gas transport cylinder is provided at the top of the spray tower, a spray head is provided below the transport cylinder, a filter plate is provided below the spray head, a mixing room is provided below the filter plate, the arc-shaped lifting cylinder of the centrifugal fan is connected to the mixing room, a recovery pool is provided at the bottom of the mixing room, and a spray tower recovery pipe is provided in the recovery pool.

Description

Technical Field

[0001] The invention relates to the field of environmental treatment equipment, in particular to equipment for environmental treatment using plasma coordinated catalysis. Background Art

[0002] The study of plasma reaction mechanism is mainly carried out through scavengers of ions or free radicals; the reaction device for plasma catalytic organic waste gas purification In recent years, the low-temperature plasma reactors studied and applied mainly include glow discharge reactors, microwave discharge reactors, dielectric barrier discharge reactors, etc. For example, the glow discharge reactor places two opposite parallel metal electrodes in a cylindrical discharge tube, and keeps the electric field between the electrodes uniform. The gas pressure in the tube is a value between 1.33 and 1.33×104Pa. The voltage of the power supply is higher than the gas breakdown voltage. When the current limiting resistor of the discharge circuit allows the discharge tube to pass a current above the milliampere level, a DC glow discharge will be generated; the generating device can be divided into two types according to the way the discharge power is provided to the discharge tube: the external electrode type and the internal electrode type. The external electrode type reactor can also become an electrodeless discharge reactor. Because it is simple, cheap and environmentally friendly, it is an ideal device for studying the mechanism of chemical reactions in the laboratory. The disadvantage is that the effective mass flux is small. Because the internal electrode type reactor mostly uses parallel plate electrodes, it is also called a parallel plate reactor, which is mainly used in large-scale high-frequency plasma chemical reaction systems. 3.2 Microwave discharge reactor Microwave dischargers can concentrate power and obtain high-density plasma without setting electrodes in the discharge gap. Its spectrum shows that compared with other methods, microwave discharge has a wider spectrum band when discharging the same gas, which can enhance the reaction of the gas. Utilizing the distribution characteristics of microwave electromagnetic fields, magnetic fields can be used to transport plasma, so that the process processing area and the discharge space are separated, which is conducive to adjusting process measures and eliminating possible side reactions. Due to these advantages, the research on methane catalytic conversion using microwave discharge reactors has increased significantly in recent years. In microwave radiation cavity reactors, this gas discharge presents a microchannel discharge structure under atmospheric pressure. Several dielectric barrier discharge electrode structures are shown in the figure. DBD reactor 4 Plasma catalytic organic waste gas purification catalysts Due to the complexity of VOCs components, the requirements for catalysts used to catalytically treat volatile organic waste gases are relatively high. In addition to high activity, the price of the catalyst is also a very important factor, which involves the issue of wide application. At the same time, it should be able to catalyze all pollutants in VOCs. Current research is more focused on improving or developing non-precious metal catalysts. Although the price of composite metal oxide catalysts is low, their activity is also low, and further improvement is needed. Catalysts play a great role in catalytic combustion reactions. Research on new development and improvement of catalysts is also ongoing at home and abroad. For example, plasma catalysis and photocatalysts working together on the surface of the filter layer may absorb more high-energy substances, thereby increasing its reaction activity. Low-temperature plasma technology is suitable for the treatment of various types of volatile organic compounds, especially the treatment of low-concentration organic waste gas. The combination of low-temperature plasma technology and catalytic technology can improve the degradation rate, increase CO2 selectivity, reduce the generation of by-products, and greatly reduce energy consumption.Therefore, low-temperature plasma catalytic synergistic technology has broad application prospects in the treatment of atmospheric environmental pollution. However, the technology is not yet mature, and many aspects need further research and improvement, and its application also needs to be further promoted. Summary of the invention

[0003] The present invention is to invent a device that utilizes plasma to coordinate catalytic environment treatment. It can use a high-voltage and high-frequency pulse power supply that can be intelligently controlled to achieve the goal of treating organic waste gas and malodorous waste gas without a separate process. At the same time, it can perform dry or wet filtration, has a wind resistance reduction structure, ensures an ideal wind balance effect, uses a high-density spiral corona electrode, increases the contact surface of its corona discharge, increases the corona density, reduces the generation of the cremation rate, and ensures that the plasma equipment is always in effective operation.

[0004] The present invention is realized by the following technical scheme: an apparatus for treating an environment using plasma in a coordinated catalytic manner, comprising a filter (1), a plasma purifier (2), a centrifugal fan (3), and a spray tower (4); a filter air outlet (5) at the rear of the dry filter is connected to the plasma purifier via a closed air cylinder; the plasma purifier is connected to the centrifugal fan via a rear air cylinder (6); the centrifugal fan is connected to the middle structure of the spray tower via an arc-shaped lifting cylinder (7); the plasma purifier is provided with a corona zone (10) between its air inlet cylinder (8) and the filter air outlet (9); an electrode plate or an electrode rod (11) is provided in the corona zone; a corona wire (12) is introduced into the electrode plate; catalyst spreading plates (13) are provided on both sides of the corona zone; lifting rollers (14) are provided on the sides of the catalyst spreading plates; a recovery zone (15) is also provided at the bottom of the corona zone; and a recovery pipe circulation pipe (16) is provided in the recovery zone;

[0005] A filtered gas transport cylinder (17) is arranged at the top of the spray tower, a spray head (18) is arranged below the transport cylinder, a filter plate (19) is arranged below the spray head, a mixing room (20) is arranged below the filter plate, an arc-shaped lifting cylinder of the centrifugal fan is connected to the mixing room, a recovery pool (21) is arranged at the bottom of the mixing room, and a spray tower recovery pipe (22) is arranged in the recovery pool.

[0006] Preferably, the corona wire is arranged in an S-shape and is inserted in series on a plurality of electrode plates arranged in parallel.

[0007] Preferably, the electrode plates are arranged in a spiral shape.

[0008] Preferably, the filter is a wet filter or a dry filter.

[0009] The synergistic catalytic method of the plasma synergistic catalytic environment treatment equipment comprises the following steps:

[0010] Step 1 The filter is set according to different treatment conditions. If the exhaust gas contains a large amount of sticky impurities, a wet filter, a cyclone plate tower and a large-aperture packing tower are set; if the exhaust gas component is mainly powder type, a dry filter is set. After the filter performs the first step of filtering the exhaust gas, the exhaust gas is sent to the plasma purifier. The gas concentration sensor at the entrance of the plasma purifier and in the warehouse body, in order to save electricity while waiting, the voltage in the corona wire is set to 15KV, and the average current decrease is controlled at t>200ma;

[0011] Step 2: After the gas concentration sensor senses the gas concentration, it controls its own voltage according to the concentration, and divides the concentration into three levels: low concentration 0~100ppm, normal concentration 100~500ppm, high concentration 500~1000ppm, and over-limit concentration above 1000ppm;

[0012] Step 3: In order to increase the treatment effect and synchronously treat the small molecular organic matter produced by pulse corona degradation, we add a layer of 1.0 mm rutile TiO2 catalyst on the wall of the electrode plate or electrode rod to form a composite electrode. Then when the surface is irradiated with UV less than 380 nm (pulse corona discharge in nitrogen will produce UV of 310-385 nm), photoinduced electrons and holes are generated, and then these substances will migrate to the solid surface and react with dissolved oxygen, water, etc. on the surface to generate active substances (such as OH, O, etc.), followed by oxidation and degradation of VOCs adsorbed on the surface; finally, the oxidized products are desorbed from the TiO2. Add an appropriate amount of catalyst in the discharge area of ​​the plasma. The catalyst layer is equivalent to a dielectric barrier layer, which will produce a field effect, increase the average electron energy, and ultimately improve the pollutant degradation effect;

[0013] Step 4 automatically adapts the voltage according to the concentration division to start the waste gas ionization treatment. The voltage in the corona wire is set to 12.5kv for low concentration, and the average voltage is set. The judgment of the average voltage comes from the judgment that the concentration remains stable within 10 minutes. If the concentration is stable within 10 minutes, it will be divided into grades. After the division is completed, 12.5kv is set as the average voltage of the three concentration treatments or the average voltage is judged from the voltage monitor. The voltage monitor will collect 5 times per second, at least 20 times, and take the average value of 20 times. At this time, when treating low concentrations, we will set the average voltage a of the entire treatment process of low concentration to be lower than 12.5~12kv. During the treatment process, the concentration is constantly increasing, and the voltage will also continue to follow up and increase. The increase is maintained at least at 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and it is readjusted after every 3 monitoring stages (that is, at least 90 seconds). The average voltage b after adjustment is generally ≤12kv at this time, thereby maintaining this ionization treatment process. In this process, the cremation rate is basically equal to 0;

[0014] Step 5 After the concentration accumulates, it enters the normal concentration. The normal concentration will set the voltage output in the corona wire to

[0015] 15KV, set the average voltage 15kv as the average voltage, the voltage monitor will collect 5 times per second, at least 20 times, take the average of 20 times, and judge the output voltage applied to the normal concentration treatment again. At this time, when treating the normal concentration, we will set the average voltage a of the entire treatment process to be lower than 12.5~15kv. During the treatment process, the concentration fluctuates and increases, and the voltage will continue to increase. The increase is kept at least 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and it is readjusted after every 3 monitoring stages (that is, at least 90 seconds). The adjusted normal concentration average voltage b is generally ≤15kv at this time, thus maintaining this ionization treatment process. In this process, the cremation rate is basically equal to 0;

[0016] Step 6: After accumulating from normal concentration, enter high concentration. At high concentration, the voltage output in the corona wire will be set to 20KV, and the average voltage of 20kv will be set as the high concentration average voltage. The voltage monitor will collect 5 times per second, at least 20 times, and take the average of 20 times to determine the output voltage used in high concentration treatment again. At this time, when treating normal concentration, we will set the high concentration average voltage a of the entire treatment process to be lower than 20~25kv. During the treatment process, the concentration fluctuates and increases, and the voltage will continue to increase. The increase is kept at least 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and it is readjusted after every 3 monitoring stages (that is, at least 90 seconds). The adjusted high concentration average voltage b is generally ≤25kv at this time, thus maintaining this ionization treatment process. In this process, the cremation rate will be controlled between 0~6.

[0017] Step 7 If the high concentration is not suppressed or the control limit is not successful, it is forced to enter the over-limit treatment concentration. Set the voltage output in the corona wire to 25KV, set the average voltage to at least 25kv, and the voltage monitor will collect 5 times per second, at least 20 times, take the average of 20 times, and judge the output voltage used in high-concentration treatment again. At this time, when treating normal concentration, we will set the concentration. The average voltage a of the high concentration of the entire treatment process will be lower than 25~27kv. During the treatment process, the concentration fluctuates and increases, and the voltage will continue to increase. The increase is maintained at least 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and after every 3 monitoring stages (that is, at least 90 seconds), it is readjusted. The adjusted high concentration average voltage b is generally ≤27kv at this time, thus maintaining this ionization treatment process;

[0018] Step 8: Sparking will become more frequent under high concentrations. Once sparking is sensed, the sensor will output a signal to the voltage monitor, which will immediately reduce the voltage by at least 1KV. Then, the device will monitor the sparking for a period of time every 30 seconds. If sparking occurs during this monitoring period, the voltage will continue to be reduced until the power is completely cut off and the machine is shut down. If sparking does not occur every 30 seconds but still occurs every 2-3 monitoring periods, the device will gradually reduce the voltage by 0.5KV after reducing the voltage by 1KV for the first time until there is no sparking or after 4 cyclic monitoring periods of 1 minute, the average voltage will remain unchanged and ionization synergistic catalysis will continue.

[0019] Compared with the background technology, the present invention has the following beneficial effects: it greatly controls the occurrence of the cremation phenomenon, adopts the control method of "cremation monitoring" and "predictive spark", controls the output voltage at a critical point below the spark starting point, realizes the maximum continuous field strength, avoids the energy waste and electrical corrosion caused by spark discharge, generally does not need to be treated by a separate process for organic waste gas and odorous waste gas, according to the nature and concentration of the waste gas, dry or wet filtration is added to the front end to prevent paint mist and dust from accumulating on the corona wire and the wire drum (wire board), reducing the corona effect or causing spark discharge, in addition to most of the The waste gas is degraded into small molecule gases (CO2, H2O, etc.), and secondary waste gases such as SO2, HCl, carbon-containing polymers, aerosols, etc. are also generated. A spray absorption device is added in the later stage; a high-density spiral corona electrode is independently designed to increase the contact surface of its corona discharge, increase the corona density, reduce the combustion rate, and ensure that the plasma equipment is always in effective operation; an appropriate amount of catalyst is added to the discharge area of ​​the plasma, and the catalyst layer is equivalent to a dielectric barrier layer, which will produce a field effect, increase the average electron energy, and ultimately improve the pollutant degradation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Overall structure diagram of the equipment,

[0021] Figure 2 A top view of a plasma purifier.

[0022] Figure 3 Anatomy of a plasma purifier. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further specifically described below through embodiments in conjunction with the accompanying drawings:

[0024] A device for treating a plasma-assisted catalytic environment comprises a filter (1), a plasma purifier (2), a centrifugal fan (3), and a spray tower (4), such as Figure 1As shown, the filter is integrally provided with a bucket-shaped sealed ventilation tube for air intake. A negative pressure fan can be provided at the head end of the air intake sealed tube, or it can be directly connected to the waste gas collection or discharge device of the factory or other reaction equipment. The filter (1) and the plasma purifier (2) are sealedly connected by an air intake tube (8). A sealed ventilation tube is also provided between the plasma purifier (2) and the centrifugal fan (3) for ventilation. However, when the centrifugal fan (3) and the spray tower (4) are set up, an arc-shaped lifting tube (7) that needs to be lifted to transmit air is connected to the spray tower (4). The material structure of the spray tower can be a high-strength plastic material or a stainless steel metal material. The quality of the spray tower is provided with a spray device inside. The spray device is the same as the prior art, and is composed of a number of spray heads and infusion pipes. One to several layers of filter plates are provided below the spray device. These filter plates are polyethylene porous reaction plates or polyethylene porous reaction membranes. Then, a shaped lifting cylinder is connected below the porous reaction plate or polyethylene porous reaction membrane to allow it to be connected to the mixing room. The exhaust gas will rise, and the filter plate will just slow down the rising speed, so that the reaction liquid or catalyst sprayed from the top can react to remove other dangerous or harmful substances. The gas after the reaction is completed is sent to the next level of processing equipment or discharged through the filtered gas transport cylinder at the top of the spray tower;

[0025] The air filter outlet (5) at the rear of the dry filter is connected to a plasma purifier through a closed air duct, the plasma purifier is connected to a centrifugal fan through a rear air duct (6), and the centrifugal fan is connected to the middle structure of the spray tower through an arc-shaped lifting cylinder (7); the plasma purifier is provided with a corona zone (10) between its air inlet cylinder (8) and the air filter outlet (9), an electrode plate or an electrode rod (11) is provided in the corona zone, a corona wire (12) is introduced into the electrode plate, catalyst spreading plates (13) are provided on both sides of the corona zone, and lifting rollers (14) are provided on the side of the catalyst spreading plate. A recovery zone (15) is also provided at the bottom of the corona zone, and a recovery pipe circulation pipe (16) is provided in the recovery zone; the roller is provided to control the interval between the catalyst spreading plate and the electrode plate or the electrode rod, and the reaction degree can be controlled by adjusting the interval. When the internal space is relatively large, the reaction is carried out by moving back and forth, and the reaction degree is much better than that of an ordinary ionization device, thereby avoiding the accumulation of waste gas at the air inlet.

[0026] A filtered gas transport cylinder (17) is arranged at the top of the spray tower, a spray head (18) is arranged below the transport cylinder, a filter plate (19) is arranged below the spray head, a mixing room (20) is arranged below the filter plate, an arc-shaped lifting cylinder of the centrifugal fan is connected to the mixing room, a recovery pool (21) is arranged at the bottom of the mixing room, and a spray tower recovery pipe (22) is arranged in the recovery pool.

[0027] Preferably, the corona wire is arranged in an S-shape and is inserted in series on a plurality of electrode plates arranged in parallel.

[0028] Preferably, the electrode plates are arranged in a spiral shape.

[0029] Preferably, the filter is a wet filter or a dry filter.

[0030] The synergistic catalytic method of the plasma synergistic catalytic environment treatment equipment comprises the following steps:

[0031] Step 1 The filter is set according to different treatment conditions. If the exhaust gas contains a large amount of sticky impurities, a wet filter, a cyclone plate tower and a large-aperture packing tower are set; if the exhaust gas component is mainly powder type, a dry filter is set. After the filter performs the first step of filtering the exhaust gas, the exhaust gas is sent to the plasma purifier. The gas concentration sensor at the entrance of the plasma purifier and in the warehouse body, in order to save electricity while waiting, the voltage in the corona wire is set to 15KV, and the average current decrease is controlled at t>200ma;

[0032] Step 2: After the gas concentration sensor senses the gas concentration, it controls its own voltage according to the concentration, and divides the concentration into three levels: low concentration 0~100ppm, normal concentration 100~500ppm, high concentration 500~1000ppm, and over-limit concentration above 1000ppm;

[0033] Step 3: In order to increase the treatment effect and synchronously treat the small molecular organic matter produced by pulse corona degradation, we add a layer of 1.0 mm rutile TiO2 catalyst on the wall of the electrode plate or electrode rod to form a composite electrode. Then when the surface is irradiated with UV less than 380 nm (pulse corona discharge in nitrogen will produce UV of 310-385 nm), photoinduced electrons and holes are generated, and then these substances will migrate to the solid surface and react with dissolved oxygen, water, etc. on the surface to generate active substances (such as OH, O, etc.), followed by oxidation and degradation of VOCs adsorbed on the surface; finally, the oxidized products are desorbed from the TiO2. Add an appropriate amount of catalyst in the discharge area of ​​the plasma. The catalyst layer is equivalent to a dielectric barrier layer, which will produce a field effect, increase the average electron energy, and ultimately improve the pollutant degradation effect;

[0034] Step 4 automatically adapts the voltage according to the concentration division to start the waste gas ionization treatment. The voltage in the corona wire is set to 12.5kv for low concentration, and the average voltage is set. The judgment of the average voltage comes from the judgment that the concentration remains stable within 10 minutes. If the concentration is stable within 10 minutes, it will be divided into grades. After the division is completed, 12.5kv is set as the average voltage of the three concentration treatments or the average voltage is judged from the voltage monitor. The voltage monitor will collect 5 times per second, at least 20 times, and take the average value of 20 times. At this time, when treating low concentrations, we will set the average voltage a of the entire treatment process of low concentration to be lower than 12.5~12kv. During the treatment process, the concentration is constantly increasing, and the voltage will also continue to follow up and increase. The increase is maintained at least at 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and it is readjusted after every 3 monitoring stages (that is, at least 90 seconds). The average voltage b after adjustment is generally ≤12kv at this time, thereby maintaining this ionization treatment process. In this process, the cremation rate is basically equal to 0;

[0035] Step 5 After the concentration accumulates, it enters the normal concentration. The normal concentration will set the voltage output in the corona wire to

[0036] 15KV, set the average voltage 15kv as the average voltage, the voltage monitor will collect 5 times per second, at least 20 times, take the average of 20 times, and judge the output voltage applied to the normal concentration treatment again. At this time, when treating the normal concentration, we will set the average voltage a of the entire treatment process to be lower than 12.5~15kv. During the treatment process, the concentration fluctuates and increases, and the voltage will continue to increase. The increase is kept at least 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and it is readjusted after every 3 monitoring stages (that is, at least 90 seconds). The adjusted normal concentration average voltage b is generally ≤15kv at this time, thus maintaining this ionization treatment process. In this process, the cremation rate is basically equal to 0;

[0037] Step 6: After accumulating from normal concentration, enter high concentration. At high concentration, the voltage output in the corona wire will be set to 20KV, and the average voltage of 20kv will be set as the high concentration average voltage. The voltage monitor will collect 5 times per second, at least 20 times, and take the average of 20 times to determine the output voltage used in high concentration treatment again. At this time, when treating normal concentration, we will set the high concentration average voltage a of the entire treatment process to be lower than 20~25kv. During the treatment process, the concentration fluctuates and increases, and the voltage will continue to increase. The increase is kept at least 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and it is readjusted after every 3 monitoring stages (that is, at least 90 seconds). The adjusted high concentration average voltage b is generally ≤25kv at this time, thus maintaining this ionization treatment process. In this process, the cremation rate will be controlled between 0~6.

[0038] Step 7 If the high concentration is not suppressed or the control limit is not successful, it is forced to enter the over-limit treatment concentration. Set the voltage output in the corona wire to 25KV, set the average voltage to at least 25kv, and the voltage monitor will collect 5 times per second, at least 20 times, take the average of 20 times, and judge the output voltage used in high-concentration treatment again. At this time, when treating normal concentration, we will set the concentration. The average voltage a of the high concentration of the entire treatment process will be lower than 25~27kv. During the treatment process, the concentration fluctuates and increases, and the voltage will continue to increase. The increase is maintained at least 0.5KV. After entering the treatment process, the voltage monitoring time is updated once every 30 seconds, and after every 3 monitoring stages (that is, at least 90 seconds), it is readjusted. The adjusted high concentration average voltage b is generally ≤27kv at this time, thus maintaining this ionization treatment process;

[0039] Step 8: Sparking will become more frequent under high concentrations. Once sparking is sensed, the sensor will output a signal to the voltage monitor, which will immediately reduce the voltage by at least 1KV. Then, the device will monitor the sparking for a period of time every 30 seconds. If sparking occurs during this monitoring period, the voltage will continue to be reduced until the power is completely cut off and the machine is shut down. If sparking does not occur every 30 seconds but still occurs every 2-3 monitoring periods, the device will gradually reduce the voltage by 0.5KV after reducing the voltage by 1KV for the first time until there is no sparking or after 4 cyclic monitoring periods of 1 minute, the average voltage will remain unchanged and ionization synergistic catalysis will continue.

[0040] After the ionization and synergistic catalysis in step 9 is completed, the reaction waste gas in step 8 is sucked away by the centrifugal fan and then connected to the spray tower (4) through the arc-shaped lifting cylinder (7). The material structure of the spray tower can be a high-strength plastic material or a stainless steel metal material. A spray device is integrally arranged inside it. The spray device is the same as the prior art, and will be composed of a plurality of spray heads and an infusion tube. One to several layers of filter plates will be arranged below the spray device. These filter plates are polyethylene porous reaction plates or polyethylene porous reaction membranes. Then, the arc-shaped lifting cylinder is connected below the porous reaction plate or the polyethylene porous reaction membrane to allow it to be connected to the mixing room. The waste gas will rise, and the filter plate will just slow down the rising speed, allowing the reaction liquid or catalyst sprayed from the top to react and remove other dangerous or harmful substances. The gas after the reaction is completed is sent to the next-level processing equipment or discharged through the filtered gas transport cylinder at the top of the spray tower; while discharging, a recovery room will be arranged at the bottom of the spray tower to transport the recovered reaction liquid or catalyst back to the spray equipment for re-spraying.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A device for treating a plasma-assisted catalytic environment, characterized in that: The invention comprises a filter (1), a plasma purifier (2), a centrifugal fan (3), and a spray tower (4); the air filter outlet (5) at the rear of the dry filter is connected to the plasma purifier via a closed air cylinder; the plasma purifier is connected to the centrifugal fan via a rear air cylinder (6); the centrifugal fan is connected to the middle structure of the spray tower via an arc-shaped lifting cylinder (7); the plasma purifier is provided with a corona zone (10) between its air inlet cylinder (8) and the air filter outlet (9); an electrode plate or an electrode rod (11) is provided in the corona zone; a corona wire (12) is introduced into the electrode plate; catalyst spreading plates (13) are provided on both sides of the corona zone; lifting rollers (14) are provided on the sides of the catalyst spreading plates; a recovery zone (15) is also provided at the bottom of the corona zone; and a recovery pipe circulation pipe (16) is provided in the recovery zone; A filtered gas transport cylinder (17) is arranged at the top of the spray tower, a spray head (18) is arranged below the transport cylinder, a filter plate (19) is arranged below the spray head, a mixing room (20) is arranged below the filter plate, an arc-shaped lifting cylinder of the centrifugal fan is connected to the mixing room, a recovery pool (21) is arranged at the bottom of the mixing room, and a spray tower recovery pipe (22) is arranged in the recovery pool; The corona wire is arranged in an S shape and is inserted in series on a plurality of electrode plates arranged in parallel; The electrode plate is arranged in a spiral shape.

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