A high-pressure wet electrostatic treatment device and a treatment process for chemical experiment waste gas

Abstract

The present application discloses a high-voltage wet electrostatic treatment device and a treatment process for chemical experimental waste gas, which relates to the technical field of experimental waste gas treatment. The high-voltage wet electrostatic treatment device includes a shell, a capture device and a spray device; the spray device is located above the capture device; the capture device includes multiple discharge electrodes and multiple dust collecting components; the dust collecting component includes a frame and multiple dust collecting plates; the dust collecting plate includes a plate body and two mesh layers; the plate body is rotatably connected to the frame; the spray device includes multiple spray pipes, and the spray direction of the spray pipe is toward the adjacent top dust collecting plate. The treatment process includes S1, collecting waste gas; S2, spray washing in a washing tower; S3, treatment with a high-voltage wet electrostatic treatment device. The present application can effectively collect waste gas and then perform harmless treatment, and has high waste gas treatment efficiency and effect, thereby effectively reducing the harm caused by waste gas.

Description

Technical Field

[0001] The present application relates to the technical field of experimental waste gas treatment, and in particular to a high-pressure wet electrostatic treatment device and a treatment process for chemical experimental waste gas. Background Art

[0002] In the process of chemical experiments, a large amount of chemical experiment waste gas is easily generated.

[0003] Among them, experimental waste gas mainly comes from the use of chemical reagents, sample pretreatment, instrument analysis and other processes. These waste gases often contain harmful substances such as acidic gases (such as hydrogen chloride, hydrogen sulfide), alkaline gases (such as ammonia), organic solvent vapors (such as methanol, ethanol, acetone) and heavy metal vapors.

[0004] If harmful substances in chemical experimental waste gas are directly discharged into the atmosphere, it will cause air pollution, which will in turn harm human health and the environment; if the waste gas is not properly handled in the laboratory, the corrosive substances and particulate matter in the waste gas will damage the instruments and equipment and accelerate the aging of the instruments and equipment; the waste gas may even react with flammable and explosive substances in the laboratory to cause fire and explosion accidents. Summary of the invention

[0005] The present application provides a high-pressure wet electrostatic treatment device and a treatment process for chemical experiment waste gas, which can effectively collect the waste gas and then treat it harmlessly, and has high waste gas treatment efficiency and effect, thereby effectively reducing the harm caused by the waste gas.

[0006] On the one hand, the present application provides a high-voltage wet electrostatic treatment device, which adopts the following technical solution: A high-pressure wet electrostatic treatment device is used in the treatment process of chemical experimental waste gas, including a shell, a capture device and a spray device; The shell has a cavity inside, an air inlet is provided at the bottom of the shell, an air outlet is provided at the top of the shell, and both the air inlet and the air outlet are in communication with the cavity; The capture device and the spray device are both arranged in the cavity, and the spray device is located above the capture device; The capture device includes a plurality of discharge electrodes and a plurality of dust collecting components; the plurality of dust collecting components are evenly spaced in the horizontal direction in the cavity, and a plurality of diversion spaces are formed in the cavity; the plurality of discharge electrodes are respectively located in the plurality of diversion spaces, and the plurality of discharge electrodes in the same diversion space are evenly spaced in the horizontal direction, and the distance between the discharge electrode and two adjacent dust collecting components is equal; The dust collecting assembly comprises a frame and a plurality of dust collecting plates; the dust collecting plate comprises a plate body and two mesh layers, and the two mesh layers are respectively arranged on both sides of the plate body; the plate body is rotatably connected to the frame body, and the rotation axis of the plate body is horizontal; the bottom of the dust collecting plate contacts and abuts against the top of the dust collecting plate below, and the plurality of dust collecting plates are all in a position state inclined relative to the vertical direction; The spray device includes a plurality of spray pipes, and the spraying direction of the spray pipes is toward the adjacent dust collecting plates at the top; the dust collecting plates at the top can rotate relative to the frame after being sprayed, and drive the other dust collecting plates on the same frame to rotate.

[0007] By adopting the above technical scheme, the spray device forms a water film on the two mesh layers of the dust collecting plate, which is convenient for it to capture charged fine particles in the exhaust gas, and the structure of the dust collecting plate enables it to have a larger area for capturing charged fine particles in the exhaust gas, which can effectively improve the exhaust gas treatment efficiency and effect of the high-pressure wet electrostatic treatment device; during the process of the spray device spraying the dust collecting component, the dust collecting plate can be cleaned, and the dust collecting plate can be driven to rotate at the same time, so as to improve the effect of the spray device in cleaning the fine particles captured on multiple dust collecting plates, so that the dust collecting component can maintain a high dust collection effect after cleaning.

[0008] Optionally, there is a distance between the mesh layer and the plate body.

[0009] By adopting the above technical solution, both sides of the mesh layer can be used to capture fine particles to ensure the dust collecting effect of the dust collecting plate; at the same time, the spray device can be conveniently used to clean the surface of the mesh layer close to the plate body.

[0010] Optionally, the dust collecting plate further comprises a plurality of elastic members; Two ends of the elastic member are respectively connected to the plate body and the mesh layer, and have a tendency to drive the mesh layer to move toward the direction close to the plate body.

[0011] By adopting the above technical solution, during the process of spraying and cleaning the dust collecting plate by the spray device, the mesh layer can overcome the vibration of the elastic part relative to the plate body after being subjected to the force of the spray, thereby further facilitating the fine particles on the mesh layer to leave the mesh layer during the cleaning process.

[0012] Optionally, the dust collecting plate further comprises a plurality of impact balls; A plurality of movable grooves adapted to the impact balls are provided inside the plate body, the impact balls are located in the movable grooves, and the moving direction of the impact balls is parallel to the moving direction of the mesh layer.

[0013] By adopting the above technical solution, the dust collecting plate rotates during the spray cleaning process, and the impact ball will impact the plate body multiple times during its rotation, intensifying the mesh layer to overcome the vibration of the elastic part relative to the plate body, thereby further facilitating the fine particles on the mesh layer to leave the mesh layer during the cleaning process.

[0014] Optionally, the center of gravity of the plate body is offset, and one end of the dust collecting plate close to the offset center of gravity of the plate body has a tendency to be located at the bottom of the dust collecting plate.

[0015] By adopting the above technical scheme, it is possible to facilitate multiple dust collecting plates on the same dust collecting component to maintain contact with each other and in an inclined state when not being sprayed and cleaned by the spray device, so that they can stably achieve the dust collecting effect; at the same time, it is possible to facilitate multiple dust collecting plates on the same dust collecting component to increase the force exerted by the dust collecting plate below it during the rotation process when being sprayed and cleaned by the spray device, so as to improve the reliability of the rotation of the multiple dust collecting plates under the spraying action, thereby further improving the cleaning effect of the spray device on the dust collecting plates.

[0016] Optionally, the length dimension of one end of the plate body close to the direction in which the center of gravity of the plate body is offset is smaller than the length dimension of one end of the plate body away from the direction in which the center of gravity of the plate body is offset.

[0017] By adopting the above technical solution, the top dust collecting plate can be easily rotated relative to the frame during the process of being sprayed and cleaned by the spray device, thereby further improving the reliability of the rotation of multiple dust collecting plates under the action of spraying, and further improving the cleaning effect of the spray device on the dust collecting plate.

[0018] Optionally, the dust collecting plate further includes two elastic layers, and the two elastic layers are respectively arranged at two ends of the plate body in contact with the adjacent plate body.

[0019] By adopting the above technical solution, the probability of damage to the two dust collecting plates due to collision during the process in which the dust collecting plate rotates and drives the other dust collecting plate to rotate can be effectively reduced, thereby effectively extending the service life of the dust collecting plates.

[0020] On the other hand, the present application also provides a process for treating waste gas from chemical experiments, which adopts the following technical solution: A chemical experiment waste gas treatment process, based on the above-mentioned high-pressure wet electrostatic treatment device, includes the following steps: S1, collecting exhaust gas; S2, washing tower spray washing, removes large particles and water-soluble pollutants in the exhaust gas; S3, high-pressure wet electrostatic treatment device to capture fine particles.

[0021] By adopting the above technical scheme, the exhaust gas is first sprayed with washing liquid after being concentrated, and the sprayed washing liquid is fully mixed with the exhaust gas to remove large particles and water-soluble pollutants in the exhaust gas; then it passes through the discharge area to make the fine particles in the exhaust gas charged, so as to facilitate the subsequent capture of the charged fine particles under the action of the electric field, thereby effectively removing most of the harmful substances in the exhaust gas, having a high exhaust gas treatment efficiency and effect, and thus effectively reducing the harm caused by the exhaust gas.

[0022] Optionally, between step S1 and step S2, the exhaust gas is pre-treated to filter large particles in the exhaust gas.

[0023] By adopting the above technical solution, the burden of the washing tower and the high-pressure wet electrostatic treatment device on waste gas treatment can be effectively reduced, and the effect of waste gas treatment can be further improved.

[0024] Optionally, after step S3, the waste gas is subjected to subsequent treatment to remove trace amounts of harmful gases remaining in the waste gas.

[0025] By adopting the above technical solution, it is possible to deeply treat trace harmful gases in the exhaust gas that cannot be completely removed by the scrubber and the high-pressure wet electrostatic treatment device, thereby achieving more comprehensive exhaust gas purification and further improving the effect of exhaust gas treatment.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. It can effectively remove large particles, water-soluble pollutants, fine particles and harmful gases in the exhaust gas, and has high exhaust gas treatment efficiency and effect, thereby effectively reducing the harm caused by the exhaust gas; 2. It can effectively expand the capture area of ​​fine particles in the exhaust gas by the high-pressure wet electrostatic treatment device, thereby effectively improving the treatment efficiency and effect of the high-pressure wet electrostatic treatment device on the exhaust gas; 3. It can effectively improve the cleaning effect of fine particles on the dust collecting plate when the spray device cleans the dust collecting device, thereby effectively ensuring the dust collecting effect of the dust collecting device after spray cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the internal structure of a high-voltage wet electrostatic treatment device according to an embodiment of the present application; Figure 2 yes Figure 1 The cross-sectional view along the AA line; Figure 3 is a schematic structural diagram of a dust collection assembly in an embodiment of the present application; Figure 4 It is a schematic diagram of the structure after the dust collecting plate is installed on the mounting rod in the embodiment of the present application; Figure 5yes Figure 4 The cross-sectional view along the BB line; Figure 6 yes Figure 5 Enlarged view of point C in the middle.

[0028] Explanation of the reference numerals: 1. Shell; 11. Cavity; 12. Air inlet; 13. Air outlet; 14. Discharge port; 15. Diversion space; 2. Capture device; 21. Discharge electrode; 22. Dust collecting assembly; 221. Frame; 2211. Mounting rod; 222. Dust collecting plate; 2221. Plate body; 2222. Mesh layer; 2223. Elastic member; 2224. Impact ball; 2225. Movable groove; 2226. Elastic layer; 3. Spraying device; 31. Spraying pipe. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] The present application embodiment discloses a chemical experiment waste gas treatment process, which is used to perform harmless treatment on the waste gas generated in the chemical experiment, and includes the following steps: S1. Collect exhaust gas.

[0031] During chemical experiments, the waste gas generated during the chemical experiments is collected through a fume hood and stored in a specific container first.

[0032] S2. Preprocessing.

[0033] The collected exhaust gas is sent to a bag filter or cyclone separator through a pipeline to initially remove large particles in the exhaust gas.

[0034] S3, washing tower spray washing, removes large particles and water-soluble pollutants in the exhaust gas.

[0035] The waste gas is sent to the scrubber through the pipeline, and the scrubbing liquid is sprayed through the spray system to fully mix the waste gas and the scrubbing liquid, thereby removing water-soluble pollutants in the waste gas and further removing large particles in the waste gas; After the washing liquid and the waste gas are fully mixed and reacted, the waste gas and the waste liquid obtained by the reaction are discharged from different paths respectively.

[0036] S4, high-pressure wet electrostatic treatment device to capture fine particles.

[0037] After the washed waste gas enters the high-voltage wet electrostatic treatment device, the corona discharge area inside the device generates a high-voltage electric field, which charges the fine particles in the waste gas; Afterwards, the charged fine particles in the exhaust gas will be captured by the dust collecting plate under the action of the electric field, forming a thin dust layer on the surface of the dust collecting plate; At the same time, the cleaning system inside the device can regularly spray and flush the dust collecting plates to remove dust collected on the surface of the dust collecting plates (i.e., fine particles in the exhaust gas) and keep the dust collecting plates clean so that subsequent dust collecting plates can continue to capture charged fine particles.

[0038] S5. Subsequent processing.

[0039] The waste gas is sent to the activated carbon adsorption bed or catalytic combustion device through a pipeline, and the trace harmful gases in the waste gas that have not been completely removed after passing through the washing tower and high-pressure wet electrostatic treatment device are deeply treated to achieve more comprehensive waste gas purification.

[0040] In this embodiment, during the process of step S3 to step S4, the control system will monitor various parameters in the waste gas treatment process, such as the flow rate of washing liquid, the electric field strength, etc., to ensure the stability and effectiveness of the waste gas treatment process; at the same time, the staff can also control the spray tower and the high-pressure wet electrostatic treatment device through the control system.

[0041] In this embodiment, since the fume hood, bag dust collector, cyclone separator, washing tower, high-pressure wet electrostatic treatment device, activated carbon adsorption bed and catalytic combustion device with the above-mentioned functions are all existing technologies in the field, their principles, operating methods and other aspects will not be elaborated here.

[0042] The embodiment of the present application also discloses a high-pressure wet electrostatic treatment device, which is applied to the above-mentioned chemical experiment waste gas treatment process and is used in the S4 step to capture fine particles in the waste gas.

[0043] Reference Figure 1 The high-voltage wet electrostatic treatment device includes a housing 1, a capture device 2 and a spray device 3. The housing 1 provides a space for waste gas treatment; the capture device 2 is used to charge the fine particles in the waste gas first and then capture the fine particles; the spray device 3 can not only improve the capture effect of the capture device 2 on the fine particles in the waste gas, but also clean the fine particles captured by the capture device 2.

[0044] Reference Figure 1 and Figure 2 The shell 1 is a rectangular parallelepiped structure as a whole, and is installed and fixed in a vertical position in its height direction. The shell 1 has a cavity 11 inside, and the bottom of the shell 1 is provided with an air inlet 12 for waste gas to enter and a discharge port 14 for cleaned fine particles to leave, and the top of the shell 1 is provided with an air outlet 13 for waste gas to be discharged. In this embodiment, the air outlet 13 and the discharge port 14 are preferably opened in the vertical direction, and the air inlet 12 is preferably opened in a direction parallel to the length direction of the shell 1.

[0045] The capturing device 2 and the spraying device 3 are both mounted on the housing 1 and located in the cavity 11 . The capturing device 2 is located below the spraying device 3 , and both are located between the air inlet 12 and the air outlet 13 .

[0046] The capture device 2 includes a plurality of discharge electrodes 21 and a plurality of dust collecting components 22. The discharge electrodes 21 are used to form an electric field in the cavity 11 to charge the fine particles in the exhaust gas; the dust collecting components 22 are used for the charged fine particles to attach to achieve the effect of capturing the fine particles.

[0047] The space occupied by the dust collecting component 22 is generally in a rectangular structure. Multiple dust collecting components 22 are evenly spaced along the length direction of the shell 1, and the interval between adjacent dust collecting components 22 is equal to the interval between the inner wall of the cavity 11 in the length direction and the adjacent dust collecting components 22; the length direction of the dust collecting component 22 is parallel to the width direction of the shell 1, and the height direction of the dust collecting component 22 is parallel to the height direction of the shell 1; multiple dust collecting components 22 are separated in the cavity 11 to form multiple diversion spaces 15, so that the exhaust gas can be divided into multiple gas streams and move toward the direction close to the outlet 13 during the process of passing through the capture device 2.

[0048] The discharge electrode 21 is a rod-shaped structure, and is fixedly installed relative to the shell 1 in a position state in which its length direction is parallel to the height direction of the shell 1; the bottom of the discharge electrode 21 has a discharge area, and the discharge area parts of multiple discharge electrodes 21 are respectively located in multiple diversion spaces 15, and the multiple discharge electrodes 21 located in the same diversion space 15 are evenly spaced along the width direction of the shell 1. The interval between two adjacent discharge electrodes 21 in the same diversion space 15 is equal to the interval between the inner wall of the cavity 11 in the width direction and the adjacent discharge electrodes 21, and the interval between the discharge electrode 21 and two adjacent dust collecting components 22 is equal. In this embodiment, the discharge electrode 21 can form an electric field around it, and multiple discharge electrodes 21 can form an electric field covering the diversion space 15 in the diversion space 15 where they are located, so that the fine particles in the exhaust gas passing through the diversion space 15 are charged; in actual applications, multiple discharge electrodes 21 will be conductive by the same conductive structure, and the conductive structure will be powered by an external power supply structure, so that multiple discharge electrodes 21 can stably form an electric field around them; since the discharge electrode 21 with the above-mentioned function is a common prior art, it will not be described in detail here, and the above-mentioned conductive structure and power supply structure are omitted in the accompanying drawings.

[0049] Reference Figure 1 and Figure 3 The dust collecting assembly 22 includes a frame 221 and a plurality of dust collecting plates 222. The frame 221 provides a mounting carrier for the plurality of dust collecting plates 222; the dust collecting plates 222 are used to capture charged fine particles.

[0050] Reference Figure 1 and Figure 4 The frame 221 is a rectangular frame structure as a whole, and its top is fixedly connected to the housing 1; the frame 221 includes a plurality of mounting rods 2211 whose axes are parallel to the width direction of the housing 1, and the plurality of mounting rods 2211 are evenly spaced along the vertical direction. In this embodiment, the mounting rods 2211 are preferably round rods.

[0051] Reference Figure 3 and Figure 4 The dust collecting plate 222 is a rectangular plate-shaped structure as a whole. Multiple dust collecting plates 222 are respectively installed on multiple mounting rods 2211. The multiple dust collecting plates 222 installed on the same mounting rod 2211 are distributed at equal intervals. Adjacent dust collecting plates 222 contact each other and the contact surfaces are smooth.

[0052] Reference Figure 4 and Figure 5 The dust collecting plate 222 includes two mesh layers 2222 and a plate body 2221. The mesh layer 2222 is used for fine particles to stay and achieve the effect of capturing fine particles; the plate body 2221 is used for the dust collecting plate 222 to be installed on the mounting rod 2211.

[0053] The mesh layer 2222 has a plurality of fine mesh holes, providing conditions for the retention of fine particles; the two mesh layers 2222 are movably installed on both sides of the thickness direction of the plate body 2221, and the movement direction of the mesh layer 2222 is parallel to the thickness direction of the plate body 2221; during the movement of the mesh layer 2222 relative to the plate body 2221, a distance can be maintained between the mesh layer 2222 and the plate body 2221.

[0054] Reference Figure 5 and Figure 6 The dust collecting plate 222 further includes a plurality of elastic members 2223, the two ends of which are respectively fixedly connected to the mesh layer 2222 and the plate body 2221, and have a tendency to drive the mesh layer 2222 to move toward the plate body 2221 to the extreme position and maintain it. In this embodiment, the elastic members 2223 are preferably tension springs; and each mesh layer 2222 is preferably connected to the plate body 2221 by four elastic members 2223, and the four elastic members 2223 are respectively located at the four corners of the mesh layer 2222.

[0055] Reference Figure 4 and Figure 5 The plate body 2221 is installed on the mounting rod 2211 in a sleeve-fitting manner and can rotate relative to the frame body 221. The rotation axis of the plate body 2221 coincides with the axis of the corresponding mounting rod 2211 and is parallel to its own width direction.

[0056] Reference Figure 4 and Figure 5A plurality of impact balls 2224 are installed inside the plate body 2221, and a plurality of movable grooves 2225 for the impact balls 2224 to move are opened along the thickness direction thereof; during the rotation of the plate body 2221 relative to the frame body 221, the impact balls 2224 will move along the movable grooves 2225 under the action of their own gravity, and when the impact balls 2224 move to the extreme position in the movable grooves 2225, they will impact the plate body 2221; after the plate body 2221 is impacted, part of the impact force will be transmitted to the corresponding mesh layer 2222, so that the mesh layer 2222 overcomes the action of the corresponding elastic member 2223 and vibrates, so that the fine particles captured on the mesh layer 2222 are washed and dropped.

[0057] Reference Figure 3 and Figure 4 , the center of gravity of the plate body 2221 is eccentric toward one end in the length direction thereof, the rotation axis of the plate body 2221 is at different distances from both ends in the length direction thereof, and the distance between the rotation axis of the plate body 2221 and one end in the length direction thereof close to the eccentric position of the center of gravity is smaller than the distance between the rotation axis of the plate body 2221 and the other end in the length direction thereof. When the plate body 2221 is mounted on the mounting rod 2211 under the action of only its own gravity, the plate body 2221 will be in a vertical state in the length direction, and the end in the length direction thereof close to the eccentric position of the center of gravity will be at the bottom thereof.

[0058] Reference Figure 1 and Figure 3 After the multiple dust collecting plates 222 are installed on the frame 221, the bottom of the dust collecting plate 222 will contact and abut against the top of the dust collecting plate 222 below it. At this time, the dust collecting plate 222 will be subjected to the force of the adjacent dust collecting plates 222 in the vertical direction, and maintain its own length direction relative to the vertical direction. In this embodiment, it is preferred that the inclination angles of the multiple dust collecting plates 222 in the same dust collecting assembly 22 are equal in static state; and it is preferred that the inclination directions and inclination angles of different dust collecting plates 222 on different dust collecting assemblies 22 are equal in static state.

[0059] Reference Figure 3 and Figure 4 During the rotation of the plate body 2221 relative to the corresponding installation rod 2211, the two ends of the plate body 2221 in the length direction will respectively contact and abut against the two ends of the plate body 2221 adjacent in the vertical direction, thereby driving the plate body 2221 adjacent in the vertical direction to rotate relative to its corresponding installation rod 2211.

[0060] Furthermore, in order to reduce the probability of adjacent dust collecting plates 222 colliding and being damaged when the plate body 2221 rotates relative to the corresponding mounting rod 2211 , the dust collecting plate 222 preferably further includes two elastic layers 2226 .

[0061] The two elastic layers 2226 are respectively fixedly mounted at both ends of the length direction of the plate body 2221. When the plate body 2221 rotates relative to the corresponding mounting rod 2211, it can contact the adjacent dust collecting plate 222 through the elastic layer 2226. In this embodiment, the elastic layer 2226 is preferably made of rubber material.

[0062] Reference Figure 1 and Figure 3 The spray device 3 includes a plurality of spray pipes 31 , the length direction of the spray pipes 31 is parallel to the width direction of the shell 1 , the plurality of spray pipes 31 are evenly spaced along the length direction of the shell 1 , and the plurality of spray pipes 31 correspond one-to-one to the plurality of dust collecting components 22 .

[0063] Reference Figure 1 and Figure 5 , the spraying direction of the spray pipe 31 is toward the corresponding dust collecting assembly 22, and it can concentrate spraying on one end of the plate body 2221 of the multiple dust collecting plates 222 located at the top of the corresponding dust collecting assembly 22 along its own length direction away from the eccentric position of its center of gravity; the plate body 2221 subjected to concentrated spraying is subjected to the force of spraying to make the corresponding dust collecting plate 222 continuously rotate relative to the frame 221, and the dust collecting plate 222 will drive the dust collecting plate 222 below it to reciprocate within a certain range relative to the frame 221 during the rotation process, and the remaining dust collecting plates 222 below the dust collecting plate 222 will rotate similarly, so as to effectively improve the cleaning effect of the spray pipe 31 on the dust collecting assembly 22. In this embodiment, since the spray device 3 with the above-mentioned function is a common prior art, it will not be described in detail here, and it is only briefly represented in the drawings (some pipes and water supply equipment are omitted).

[0064] The implementation principle of a high-voltage wet electrostatic treatment device in the embodiment of the present application is: After the exhaust gas enters the cavity 11 through the air inlet 12, it will move upward and be diverted into multiple diversion spaces 15. Multiple discharge electrodes 21 form an electric field in the diversion space 15. When the exhaust gas passes through the diversion space 15, the fine particles in the exhaust gas are charged in the electric field. The charged fine particles will be captured by the adjacent dust collecting plate 222 and attached to the mesh layer 2222. The exhaust gas continues to move upward and can be discharged through the air outlet 13 for subsequent treatment. After a period of time, the spray device 3 will spray and clean the multiple dust collecting components 22 through multiple spray pipes 31. After spraying onto the dust collecting plate 222, the spraying effect on the mesh layer 2222 can flush the fine particles attached to the mesh layer 2222; the spraying effect on the plate body 2221 can drive the dust collecting plate 222 to rotate relative to the frame 221, and the rotation makes the spraying effect of the spray device 3 on the dust collecting plate 222 more uniform, and at the same time, it can intensify the activity of the impact ball 2224 in the plate body 2221 to repeatedly collide with the inside of the plate body 2221, and can intensify the collision between adjacent dust collecting plates 222, so as to further facilitate the fine particles attached to the mesh layer 2222 to be sprayed and flushed, and the flushed fine particles will be discharged from the discharge port 14 together with the liquid.

[0065] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-pressure wet electrostatic treatment device, used in the treatment process of chemical experimental waste gas, characterized in that: It comprises a housing (1), a capturing device (2) and a spraying device (3); The shell (1) has a cavity (11) inside, an air inlet (12) is provided at the bottom of the shell (1), an air outlet (13) is provided at the top of the shell (1), and both the air inlet (12) and the air outlet (13) are in communication with the cavity (11); The capturing device (2) and the spraying device (3) are both arranged in the cavity (11), and the spraying device (3) is located above the capturing device (2); The capture device (2) comprises a plurality of discharge electrodes (21) and a plurality of dust collecting components (22); the plurality of dust collecting components (22) are evenly spaced in the horizontal direction in the cavity (11), and a plurality of flow diversion spaces (15) are formed in the cavity (11); the plurality of discharge electrodes (21) are respectively located in the plurality of flow diversion spaces (15), the plurality of discharge electrodes (21) in the same flow diversion space (15) are evenly spaced in the horizontal direction, and the distance between the discharge electrode (21) and two adjacent dust collecting components (22) is equal; The dust collecting assembly (22) comprises a frame (221) and a plurality of dust collecting plates (222); the dust collecting plate (222) comprises a plate body (2221) and two mesh layers (2222), and the two mesh layers (2222) are respectively arranged on both sides of the plate body (2221); the plate body (2221) is rotatably connected to the frame (221), and the rotation axis of the plate body (2221) is horizontal; the bottom of the dust collecting plate (222) contacts and abuts against the top of the dust collecting plate (222) below, and the plurality of dust collecting plates (222) are all in a position state inclined relative to the vertical direction; The spray device (3) comprises a plurality of spray pipes (31), and the spraying direction of the spray pipes (31) is toward the adjacent dust collecting plates (222) at the top; after being sprayed, the dust collecting plates (222) at the top can rotate relative to the frame (221), and drive other dust collecting plates (222) on the same frame (221) to rotate.

2. A high-voltage wet electrostatic treatment device according to claim 1, characterized in that: There is a distance between the mesh layer (2222) and the plate body (2221).

3. A high-pressure wet electrostatic treatment device according to claim 2, characterized in that: The dust collecting plate (222) further comprises a plurality of elastic members (2223); The two ends of the elastic member (2223) are respectively connected to the plate body (2221) and the mesh layer (2222), and have a tendency to drive the mesh layer (2222) to move in a direction close to the plate body (2221).

4. A high-voltage wet electrostatic treatment device according to claim 3, characterized in that: The dust collecting plate (222) further comprises a plurality of impact balls (2224); A plurality of movable grooves (2225) adapted to the impact balls (2224) are provided inside the plate body (2221); the impact balls (2224) are located in the movable grooves (2225), and the moving direction of the impact balls (2224) is parallel to the moving direction of the mesh layer (2222).

5. A high-voltage wet electrostatic treatment device according to claim 1, characterized in that: The center of gravity of the plate body (2221) is offset, and one end of the dust collecting plate (222) close to the offset center of gravity of the plate body (2221) has a tendency to be located at the bottom of the dust collecting plate (222).

6. A high-voltage wet electrostatic treatment device according to claim 5, characterized in that: The length dimension of one end of the plate body (2221) close to the direction in which the center of gravity of the plate body is offset is smaller than the length dimension of one end of the plate body (2221) away from the direction in which the center of gravity of the plate body is offset.

7. A high-voltage wet electrostatic treatment device according to claim 1, characterized in that: The dust collecting plate (222) further comprises two elastic layers (2226), and the two elastic layers (2226) are respectively arranged at two ends of the plate body (2221) in contact with the adjacent plate body (2221).

8. A chemical experiment waste gas treatment process, based on a high-pressure wet electrostatic treatment device as described in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, collecting exhaust gas; S2, washing tower spray washing, removes large particles and water-soluble pollutants in the exhaust gas; S3, high-pressure wet electrostatic treatment device to capture fine particles.

9. A chemical experiment waste gas treatment process according to claim 8, characterized in that: Between step S1 and step S2, the exhaust gas is pre-treated to filter out large particles in the exhaust gas.

10. A chemical experiment waste gas treatment process according to claim 8, characterized in that: After step S3, the waste gas is subsequently treated to remove the remaining trace amount of harmful gases in the waste gas.

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