Power plant waste gas purification equipment

Abstract

The invention relates to the technical field of purification equipment, and discloses power plant waste gas purification equipment which comprises a purification box, a pretreatment box is arranged at an air inlet of the purification box, a filter screen is installed in the purification box and connected with a waste gas pipeline, and an air outlet pipe is installed at an air outlet; the purification frame is arranged in the purification box, motors are mounted on the surface of the purification box, motors are mounted on the upper portion and the lower portion of the purification box respectively, and lead screws are coaxially mounted on motor rotors and rotationally connected with the purification frame; an electrostatic filtering unit and a ceramic filtering unit are arranged in the purifying frame and are inserted into the purifying frame. The electrostatic filter unit and the ceramic filter unit of the equipment are assembled in an inserted manner and can be directly pulled out and disassembled without disassembling the whole structure of the purification frame, so that the operation process is simplified; the motor drives the lead screw to rotate, the purification frame can be driven to move to the outside in the purification box, the operation space is prevented from being limited, the cleaning, dismounting and mounting difficulty is reduced, complex tools are not needed, operation is convenient and efficient, maintenance is convenient, and the equipment operation stability is improved.

Description

Technical Field

[0001] This invention relates to the field of purification equipment technology, specifically to a power plant exhaust gas purification device. Background Technology

[0002] During the power generation process, power plants produce exhaust gases containing various pollutants. Direct discharge of these exhaust gases can have adverse effects on the ecological environment. Therefore, power plant exhaust gas purification equipment is an important component of power production facilities. It is mainly used to filter and purify power plant exhaust gases to reduce the pollutant content in the exhaust gases in order to meet environmental protection emission requirements.

[0003] In existing technologies, the filter units in power plant exhaust gas purification equipment mostly adopt an assembly structure that is fixedly connected to or integrally embedded in the purification frame. The purification frame is typically fixed deep inside the purification chamber. This fixed assembly structure requires disassembling the entire purification frame structure when installing or removing the filter unit, making the process cumbersome. Furthermore, the design of the purification frame being fixed deep inside the purification chamber restricts the operating space during filter unit installation and removal, further increasing the difficulty of operation. The entire process often requires multiple complex tools, which not only reduces installation and removal efficiency but also makes subsequent cleaning and maintenance of the filter unit extremely inconvenient. Over the long term, untimely or inadequate maintenance of the filter unit can easily affect the operational stability of the equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a power plant exhaust gas purification device to solve the problem mentioned in the background art: the subsequent cleaning and maintenance of the filter unit is extremely inconvenient, and over time, the untimely or inadequate maintenance of the filter unit can affect the stability of equipment operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power plant exhaust gas purification device, comprising: The purification box has a pretreatment box at its air inlet, an air outlet pipe at its air outlet, a filter screen inside the pretreatment box, and an exhaust gas pipe at its air inlet. A purification frame is set inside a purification box. A mounting bracket is installed on the surface of the purification box. A motor is installed in the upper and lower parts of the inner cavity of the mounting bracket. A lead screw is coaxially mounted on the rotor of each motor. The lead screw is screwed to the surface of the purification frame. An electrostatic filtration unit is disposed inside the purification frame, and a ceramic filtration unit is installed in the inner cavity of the purification frame. Both the electrostatic filtration unit and the ceramic filtration unit are inserted into the interior of the purification frame.

[0006] Preferably, a control module is installed on the surface of the mounting bracket at the position corresponding to the motor, the control module is connected to the motor, and a connecting pipe is installed between the purification box and the pretreatment box; The control module can precisely regulate the motor's operating status, ensuring the stability and synchronization of the motor driving the lead screw, thereby guaranteeing the accuracy of the purification frame's lifting or movement; the connecting pipe is used to achieve a sealed connection between the pretreatment box and the purification box, preventing leakage of waste gas during transmission, and ensuring that the pretreated waste gas can smoothly and evenly enter the purification box for deep purification.

[0007] Preferably, the air inlet of the pretreatment box is equipped with a connecting pipe, which is connected to the exhaust gas pipe. The connecting pipe serves as a transitional connection between the pretreatment box and the exhaust gas pipeline. It can be adapted to exhaust gas pipelines of different specifications, improving the compatibility of the equipment with the existing exhaust gas conveying system of the power plant. At the same time, it enhances the structural strength of the connection part and avoids loosening of the connection due to long-term exhaust gas pressure.

[0008] Preferably, flanges are installed at the connection ends of the connecting pipe and the exhaust gas pipe, and threaded rods are screwed between the flanges; The flange design allows the connection surfaces of the butt joint pipe and the exhaust gas pipe to fit tightly, enhancing the sealing of the connection. The threaded rod and nut enable a secure locking between the flanges, ensuring the stability of the connection structure and facilitating subsequent disassembly and maintenance. When the pipeline malfunctions or needs to be replaced, the threaded rod can be quickly disassembled for separation.

[0009] Preferably, the pretreatment box has an installation frame inside, and the surface of the installation frame has an installation groove, and the filter screen is installed inside the installation groove; The mounting frame provides a stable mounting platform for the filter screen, and the structure of the mounting slot enables precise positioning of the filter screen, preventing it from shifting inside the pretreatment box and ensuring that the exhaust gas can be completely pretreated by the filter screen. At the same time, it facilitates the quick installation and positioning of the filter screen.

[0010] Preferably, bolts are screwed onto the four corners of the filter screen, and the bolts all penetrate the filter screen and are screwed onto the surface of the mounting groove. The bolts at the four corners ensure even tightening between the filter screen and the mounting groove, guaranteeing a tight fit between the filter screen and the inner wall of the mounting groove. This prevents exhaust gas from bypassing the filter screen through gaps, ensuring the pretreatment effect. At the same time, the bolt connection method facilitates subsequent disassembly, cleaning, or replacement of the filter screen, making operation simple and convenient and reducing maintenance costs.

[0011] Preferably, a limiting frame is installed inside the purification box, and the purification frame is inserted into the limiting frame; The limiting frame guides and limits the purification frame, ensuring that the purification frame can move smoothly in a fixed direction under the drive of the lead screw, preventing the purification frame from tilting or deviating during the movement, and ensuring that the electrostatic filter unit and ceramic filter unit inside the purification frame are always in the optimal position of the exhaust gas purification channel, thereby improving purification efficiency.

[0012] Preferably, a sliding track is installed inside the purification frame, and both the electrostatic filter unit and the ceramic filter unit are inserted into the sliding track, with the electrostatic filter unit and the ceramic filter unit in close contact with the inner wall of the purification frame. The sliding rails guide the installation and removal of the electrostatic and ceramic filter units, allowing them to be quickly and smoothly inserted into or removed from the purification frame, facilitating later maintenance, replacement, and cleaning. The tight contact between the electrostatic and ceramic filter units and the inner wall of the purification frame prevents short circuits in the exhaust gas inside the frame, ensuring that all exhaust gas passes through the electrostatic and ceramic filter units sequentially for deep purification, thus guaranteeing the stability of the purification effect.

[0013] Preferably, a sealing plate is movably mounted on the surface of the lead screw, the sealing plate is mounted on the surface of the purification box, and a sealing strip is mounted on the surface of the sealing plate; The sealing plate is used to seal the installation opening on the purification box that corresponds to the purification frame, preventing exhaust gas from leaking from the opening during the purification process; the sealing strip further enhances the sealing performance between the sealing plate and the surface of the purification box, improves the overall airtightness of the purification box, and at the same time, the sealing strip can alleviate the collision and friction between the sealing plate and the purification box, extending the service life of the sealing structure.

[0014] Preferably, both the electrostatic filter unit and the ceramic filter unit are equipped with handles on their surfaces, and the surface of the sealing plate is provided with receiving grooves at positions corresponding to the handles. The handle provides operators with a convenient grip for assembling and disassembling electrostatic and ceramic filter units, reducing the difficulty of the disassembly and assembly operations. The receiving groove can be set up to store the handle when the sealing plate is closed, preventing the handle from protruding and causing the sealing plate to not be able to fit tightly against the surface of the purification box, ensuring the integrity of the sealing structure and protecting the airtight purification environment of the purification box.

[0015] Compared with the prior art, the present invention provides a power plant exhaust gas purification device, which has the following beneficial effects: The power plant's exhaust gas purification equipment features electrostatic and ceramic filter units that are inserted into the purification frame, allowing for direct removal and assembly without disassembling the entire frame. This significantly simplifies the process. Furthermore, the design incorporates a motor-driven screw mechanism within the mounting bracket's inner cavity, connecting the electrostatic and ceramic filter units to the frame. This design enables the motor to rotate the screw, moving the frame from inside the purification chamber to the outside. This avoids the limited operating space caused by the frame's location deep within the chamber, further reducing the difficulty of cleaning and disassembly. The entire process requires no complex tools, making it convenient and efficient. This also facilitates subsequent maintenance of the electrostatic and ceramic filter units, contributing to improved overall equipment stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the installation structure of the purification frame of the present invention; Figure 4 This is a schematic diagram of the structure of the purification frame of the present invention; Figure 5 This is a schematic diagram of the mounting frame of the present invention; Figure 6 This is a schematic diagram of the sealing plate of the present invention.

[0017] In the diagram: 1. Purification box; 2. Pretreatment box; 3. Exhaust gas duct; 4. Purification frame; 5. Mounting bracket; 6. Motor; 7. Lead screw; 8. Electrostatic filter unit; 9. Ceramic filter unit; 10. Exhaust duct; 11. Control module; 12. Connecting pipe; 13. Butt joint pipe; 14. Flange; 15. Threaded rod; 16. Mounting frame; 17. Filter screen; 18. Mounting groove; 19. Bolt; 20. Limiting frame; 21. Sliding rail; 22. Sealing plate; 23. Sealing strip; 24. Receiving groove; 25. Handle. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a power plant exhaust gas purification device. Please refer to [link / reference]. Figure 1 It includes a purification box 1, an air inlet of which is equipped with a pretreatment box 2, and an air outlet duct 10 installed at the air outlet of the purification box 1. Please refer to [link / reference]. Figure 2 The pretreatment box 2 has a filter screen 17 inside. Please refer to [link / reference]. Figure 1 The air inlet of the pretreatment box 2 is equipped with an exhaust gas pipe 3; Please see Figure 2 Purification frame 4 is located inside purification box 1. Please refer to [link / reference]. Figure 1 The surface of the purification box 1 is equipped with a mounting bracket 5, please refer to [link / reference]. Figure 3 Motors 6 are installed in the upper and lower parts of the inner cavity of the mounting frame 5. The rotors of the motors 6 are coaxially mounted with lead screws 7, and the lead screws 7 are screwed to the surface of the purification frame 4. Please see Figure 4 An electrostatic filter unit 8 is installed inside the purification frame 4. A ceramic filter unit 9 is installed inside the purification frame 4. Both the electrostatic filter unit 8 and the ceramic filter unit 9 are inserted into the purification frame 4.

[0020] Both the electrostatic filter unit 8 and the ceramic filter unit 9 are assembled by inserting into the purification frame 4, allowing them to be directly pulled out of the purification frame 4 for assembly and disassembly without disassembling the entire structure of the purification frame 4, greatly simplifying the assembly and disassembly process. Simultaneously, the design of the upper and lower motors 6 driving the lead screw 7 within the inner cavity of the mounting bracket 5 on the surface of the purification box 1, which is screwed onto the purification frame 4, allows the electrostatic filter unit 8 and the ceramic filter unit 9 to be cleaned or disassembled. This is achieved by starting the motor 6 to drive the lead screw 7 to rotate, thereby moving the purification frame 4 inside the purification box 1 to the outside. This avoids the problem of limited operating space caused by the purification frame 4 being located deep inside the purification box 1, further reducing the difficulty of cleaning and disassembly. The entire process requires no complex tools, making it convenient and efficient. This also makes subsequent maintenance of the electrostatic filter unit 8 and the ceramic filter unit 9 more convenient, contributing to improved overall equipment operational stability.

[0021] Please see Figure 3 Control modules 11 are installed on the surface of mounting bracket 5 at positions corresponding to those of motor 6. Control modules 11 are connected to motor 6. Please refer to [link / reference]. Figure 1 A connecting pipe 12 is installed between the purification box 1 and the pretreatment box 2; The control module 11 can accurately regulate the operating status of the motor 6, ensuring the stability and synchronization of the motor 6 driving the lead screw 7 to rotate, thereby ensuring the accuracy of the lifting or moving of the purification box 4; the connecting pipe 12 is used to achieve a sealed connection between the pretreatment box 2 and the purification box 1, to prevent the waste gas from leaking during the transmission process, and at the same time ensure that the pretreated waste gas can enter the purification box 1 smoothly and evenly for deep purification.

[0022] The air inlet of the pretreatment box 2 is equipped with a connecting pipe 13, which is connected to the exhaust gas pipe 3; The connecting pipe 13 serves as a transitional connection structure between the pretreatment box 2 and the exhaust gas pipeline 3. It can be adapted to exhaust gas pipelines 3 of different specifications, improving the compatibility of the equipment with the existing exhaust gas conveying system of the power plant. At the same time, it enhances the structural strength of the connection part and avoids loosening of the connection due to long-term exhaust gas pressure.

[0023] Flanges 14 are installed at the connection ends of the connecting pipe 13 and the exhaust gas pipe 3, and threaded rods 15 are screwed between the flanges 14. The flange 14 allows the connection surfaces of the butt joint pipe 13 and the exhaust gas pipe 3 to fit tightly, enhancing the sealing of the connection. The threaded rod 15, in conjunction with the nut, can securely lock the flange 14 together, ensuring the stability of the connection structure and facilitating subsequent disassembly and maintenance. When the pipeline malfunctions or needs to be replaced, the threaded rod 15 can be quickly disassembled to achieve separation.

[0024] Please see Figure 2 The pretreatment box 2 has an installation frame 16 installed inside; please refer to [link / reference]. Figure 5 The surface of the mounting frame 16 is provided with a mounting groove 18, and the filter screen 17 is installed inside the mounting groove 18; The mounting frame 16 provides a stable mounting carrier for the filter screen 17. The structure of the mounting groove 18 enables precise positioning of the filter screen 17, preventing the filter screen 17 from shifting inside the pretreatment box 2, ensuring that the exhaust gas can be completely pretreated by the filter screen 17, and facilitating the quick installation and positioning of the filter screen 17.

[0025] Bolts 19 are screwed onto the four corners of the surface of the filter screen 17, and the bolts 19 all penetrate the filter screen 17 and are screwed onto the surface of the mounting groove 18. The bolts 19 at the four corners can achieve uniform locking between the filter screen 17 and the mounting groove 18, ensuring that the filter screen 17 fits tightly against the inner wall of the mounting groove 18, preventing exhaust gas from bypassing the filter screen 17 through gaps, and ensuring the pretreatment effect; at the same time, the bolt connection method facilitates the subsequent disassembly, cleaning or replacement of the filter screen 17, making the operation simple and convenient and reducing maintenance costs.

[0026] Please see Figure 2 A limit frame 20 is installed inside the purification box 1, and the purification frame 4 is inserted into the limit frame 20; The limiting frame 20 guides and limits the purification frame 4, ensuring that the purification frame 4 can move smoothly in a fixed direction under the drive of the lead screw 7, preventing the purification frame 4 from tilting or deviating during the movement, and ensuring that the electrostatic filter unit 8 and ceramic filter unit 9 inside the purification frame 4 can always be in the optimal position of the exhaust gas purification channel, thereby improving the purification efficiency.

[0027] Please see Figure 4 The purification frame 4 is equipped with a sliding track 21. The electrostatic filter unit 8 and the ceramic filter unit 9 are both inserted into the sliding track 21, and the electrostatic filter unit 8 and the ceramic filter unit 9 are in close contact with the inner wall of the purification frame 4. The sliding rail 21 provides guidance for the installation and removal of the electrostatic filter unit 8 and the ceramic filter unit 9, allowing them to be quickly and smoothly inserted into or removed from the purification frame 4, facilitating later maintenance, replacement, and cleaning. The close contact between the electrostatic filter unit 8 and the ceramic filter unit 9 and the inner wall of the purification frame 4 prevents the exhaust gas from forming a short circuit inside the purification frame 4, ensuring that all exhaust gas can pass through the electrostatic filter unit 8 and the ceramic filter unit 9 in sequence for deep purification, thus guaranteeing the stability of the purification effect.

[0028] A sealing plate 22 is movably mounted on the surface of the lead screw 7. The sealing plate 22 is mounted on the surface of the purification chamber 1. Please refer to [link / reference]. Figure 6 A sealing strip 23 is installed on the surface of the sealing plate 22; The sealing plate 22 is used to seal the installation opening on the purification box 1 corresponding to the purification frame 4 to prevent exhaust gas from leaking from the opening during the purification process; the sealing strip 23 further enhances the sealing performance between the sealing plate 22 and the surface of the purification box 1, improves the overall airtightness of the purification box 1, and at the same time, the sealing strip 23 can alleviate the collision and friction between the sealing plate 22 and the purification box 1, and extend the service life of the sealing structure.

[0029] Please see Figure 4 Both the electrostatic filter unit 8 and the ceramic filter unit 9 have handles 25 installed on their surfaces. Please refer to [link / reference]. Figure 6 The sealing plate 22 has a receiving groove 24 at the corresponding position of the handle 25; The handle 25 provides a convenient grip for operators to disassemble and assemble the electrostatic filter unit 8 and the ceramic filter unit 9, reducing the difficulty of disassembly and assembly operations; the receiving groove 24 can store the handle 25 when the sealing plate 22 is closed, preventing the handle 25 from protruding and causing the sealing plate 22 to not be able to fit tightly against the surface of the purification box 1, ensuring the integrity of the sealing structure and guaranteeing the airtight purification environment of the purification box 1.

[0030] In this solution: Power plant exhaust gas is first transmitted through exhaust gas pipeline 3. After being tightly sealed by the flange 14 and threaded rod 15 at the connection end of the connecting pipe 13 and exhaust gas pipeline 3, it enters the pretreatment box 2. The fitting design of the flange 14 and the firm locking of the threaded rod 15 ensure no exhaust gas leakage at the connection point. The connecting pipe 13 can also be adapted to exhaust gas pipelines 3 of different specifications, improving compatibility with the existing conveying system. After entering the pretreatment box 2, the exhaust gas first passes through the filter screen 17 installed in the mounting groove 18 of the mounting frame 16 for pretreatment. The mounting frame 16 and the mounting groove 18 achieve precise positioning of the filter screen 17 to prevent it from shifting. The bolts 19 at the four corners of the filter screen 17 ensure that the filter screen 17 is in place. The pretreatment system fits tightly against the inner wall of the mounting groove 18 to prevent exhaust gas from bypassing through gaps and ensure the pretreatment effect. The pretreated exhaust gas is then sealed and transported to the purification chamber 1 via the connecting pipe 12. The connecting pipe 12 achieves a sealed connection between the pretreatment chamber 2 and the purification chamber 1, preventing exhaust gas leakage while ensuring a smooth and uniform entry of the exhaust gas into the purification chamber 1. The exhaust gas entering the purification chamber 1 then enters the purification frame 4 inside the insertion limiting frame 20. The limiting frame 20 guides and limits the purification frame 4, ensuring its smooth movement without deviation and ensuring that the internal filter unit is in the optimal purification channel position. The electrostatic filter unit 8 and ceramic filter unit 9 inside the purification frame 4 are installed by inserting into the sliding rail 21. Channel 21 provides guidance for both components, and both are in close contact with the inner wall of the purification frame 4 to prevent short circuits in the exhaust gas, ensuring that all exhaust gas passes through the electrostatic filter unit 8 and the ceramic filter unit 9 for deep purification in sequence. The deeply purified exhaust gas is finally discharged through the exhaust pipe 10 at the outlet of the purification box 1. Throughout the purification process, the motors 6 in the upper and lower parts of the inner cavity of the mounting bracket 5 on the surface of the purification box 1 maintain stable and synchronous operation under the precise control of the control module 11, driving the lead screw 7 to rotate to ensure the accuracy of the lifting or moving of the purification frame 4. The sealing plate 22 on the surface of the lead screw 7 and the sealing strip 23 on the surface of the sealing plate 22 seal the installation opening of the purification box 1, further improving the overall airtightness of the purification box 1 and preventing... Prevents exhaust gas leakage; when maintenance is required, the motor 6 can be started through the control module 11, driving the lead screw 7 to rotate and move the purification frame 4 to the outside of the purification box 1, avoiding limited operating space. Operators can use the handles 25 on the surface of the electrostatic filter unit 8 and the ceramic filter unit 9 to quickly pull them out along the sliding track 21 for cleaning or replacement. The receiving groove 24 on the surface of the sealing plate 22 can store the handle 25 when the sealing plate 22 is closed, ensuring the integrity of the seal. If the filter screen 17 needs to be maintained, the bolts 19 at the four corners can be removed to take it out of the mounting groove 18 for cleaning or replacement. The entire maintenance process does not require disassembling the overall structure, making the operation convenient and efficient, and ensuring the long-term stable operation of the equipment.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power plant exhaust gas purification device, characterized in that, include: Purification box (1), the air inlet of the purification box (1) is provided with a pretreatment box (2), the air outlet of the purification box (1) is provided with an air outlet pipe (10), the inner cavity of the pretreatment box (2) is provided with a filter screen (17), and the air inlet of the pretreatment box (2) is provided with an exhaust gas pipe (3). A purification frame (4) is set inside the purification box (1). A mounting bracket (5) is installed on the surface of the purification box (1). A motor (6) is installed on the upper and lower parts of the inner cavity of the mounting bracket (5). A lead screw (7) is coaxially installed on the rotor of the motor (6). The lead screw (7) is screwed to the surface of the purification frame (4). An electrostatic filter unit (8) is disposed inside the purification frame (4), and a ceramic filter unit (9) is installed in the inner cavity of the purification frame (4). Both the electrostatic filter unit (8) and the ceramic filter unit (9) are inserted into the purification frame (4).

2. The power plant exhaust gas purification equipment according to claim 1, characterized in that: Control modules (11) are installed on the surface of the mounting bracket (5) at the corresponding positions of the motor (6). The control modules (11) are connected to the motor (6). A connecting pipe (12) is installed between the purification box (1) and the pretreatment box (2).

3. The power plant exhaust gas purification equipment according to claim 1, characterized in that: The air inlet of the pretreatment box (2) is equipped with a connecting pipe (13), which is connected to the exhaust gas pipe (3).

4. The power plant exhaust gas purification equipment according to claim 3, characterized in that: The connecting end of the connecting pipe (13) and the exhaust pipe (3) is equipped with a flange (14), and a threaded rod (15) is screwed between the flanges (14).

5. The power plant exhaust gas purification equipment according to claim 1, characterized in that: The pretreatment box (2) is equipped with an installation frame (16) inside, and the surface of the installation frame (16) is provided with an installation groove (18). The filter screen (17) is installed inside the installation groove (18).

6. The power plant exhaust gas purification equipment according to claim 5, characterized in that: Bolts (19) are screwed onto the four corners of the surface of the filter screen (17), and the bolts (19) all penetrate the filter screen (17) and are screwed onto the surface of the mounting groove (18).

7. The power plant exhaust gas purification equipment according to claim 1, characterized in that: The purification box (1) is equipped with a limiting frame (20) inside, and the purification frame (4) is inserted into the limiting frame (20).

8. The power plant exhaust gas purification equipment according to claim 1, characterized in that: The purification frame (4) is equipped with a sliding track (21). The electrostatic filter unit (8) and the ceramic filter unit (9) are both inserted into the sliding track (21). The electrostatic filter unit (8) and the ceramic filter unit (9) are in close contact with the inner wall of the purification frame (4).

9. The power plant exhaust gas purification equipment according to claim 1, characterized in that: A sealing plate (22) is movably mounted on the surface of the lead screw (7). The sealing plate (22) is mounted on the surface of the purification box (1). A sealing strip (23) is mounted on the surface of the sealing plate (22).

10. The power plant exhaust gas purification equipment according to claim 9, characterized in that: The electrostatic filter unit (8) and the ceramic filter unit (9) are both equipped with handles (25), and the surface of the sealing plate (22) is provided with receiving grooves (24) at the corresponding positions of the handles (25).

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