A tail gas treatment device for a thermal power plant

Abstract

The application relates to the technical field of tail gas treatment, and discloses a tail gas treatment device for a thermal power plant, which comprises a first air guide pipe, the end of the first air guide pipe is fixedly connected with a three-way pipe, two second air guide pipes are fixedly connected with the three-way pipe, the other ends of the two second air guide pipes are fixedly connected with treatment barrels, the upper ends of the two treatment barrels are fixedly connected with cover plates, the interiors of the treatment barrels are fixedly connected with baffles, a plurality of openings are arranged in the interiors of the baffles, filter screens are fixedly installed in the interiors of the openings, electric heating plates are fixedly connected with the bottom inner walls of the treatment barrels, a crushing mechanism is arranged on one side of the baffle, a transmission mechanism is arranged in the interior of the cover plate in a sleeved mode, and the crushing mechanism is in transmission connection with the transmission mechanism. The tail gas treatment device for the thermal power plant can effectively treat water carried in tail gas, and ensures the treatment effect of the absorption liquid on the tail gas.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas treatment technology, specifically to an exhaust gas treatment device for thermal power plants. Background Technology

[0002] A thermal power plant is a factory that uses combustible materials as fuel to produce electricity. Its basic production process is as follows: when fuel is burned, it heats water to generate steam, which converts the chemical energy of the fuel into heat energy. The steam pressure drives the turbine to rotate, and the heat energy is converted into mechanical energy. Then the turbine drives the generator to rotate, which converts the mechanical energy into electrical energy. The prime mover is usually a steam engine or a gas turbine. In some smaller power plants, an internal combustion engine may also be used. They all generate electricity by utilizing the pressure drop in the process of high-temperature, high-pressure steam or gas being converted into low-pressure air or condensate through a turbine.

[0003] Currently, the exhaust gas from thermal power plants typically carries a significant amount of moisture. This moisture dilutes the absorbent used to treat the exhaust gas, thus affecting the treatment effect. Furthermore, the moisture in the exhaust gas can cause corrosion and rust on the inner walls of the exhaust gas discharge pipes, impacting the normal operation of the entire system. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a tail gas treatment device for thermal power plants that effectively treats moisture carried in the tail gas, thus solving the problems of affecting the treatment effect of the absorbent on the tail gas and the rusting and corrosion of the inner wall of the tail gas emission pipe.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tail gas treatment device for a thermal power plant, comprising a first gas guide pipe, a tee pipe fixedly connected to the end of the first gas guide pipe and two second gas guide pipes fixedly connected through the tee pipe, a treatment tank fixedly connected to the other end of each of the two second gas guide pipes, a cover plate fixedly connected to the upper end of each of the two treatment tanks, a partition plate fixedly connected inside each treatment tank, multiple openings opened inside the partition plate, a filter screen fixedly installed inside each opening, an electric heating plate fixedly connected to the bottom inner wall of the treatment tank, a crushing mechanism provided on one side of the partition plate, a transmission mechanism sleeved inside the cover plate, the crushing mechanism being drivenly connected to the transmission mechanism, air outlets opened on both sides of the treatment tank, a first air outlet pipe and a second air outlet pipe fixedly sleeved inside the two air outlets respectively, a filter plate corresponding to the position of the two air outlets fixedly connected to the inner wall of the treatment tank, and two cleaning mechanisms symmetrically arranged on the inner wall of the treatment tank, both of the cleaning mechanisms being drivenly connected to the crushing mechanism.

[0006] Preferably, the crushing mechanism includes a motor and two first rotating rods. The motor is fixedly connected to the bottom outer wall of the processing barrel. The two first rotating rods are symmetrically arranged above the partition and their lower ends are rotatably connected to the partition. Multiple blades are fixedly sleeved on the rod walls of the two first rotating rods. The lower end of one of the first rotating rods penetrates the processing barrel and is fixedly connected to the output end of the motor.

[0007] Preferably, the transmission mechanism includes two second rotating rods, two sleeves, and two gears. The two second rotating rods are symmetrically rotatably connected to the inside of the cover plate, and their upper ends are respectively fixedly connected to the corresponding gears. The two gears are meshed together. The two sleeves are respectively fixedly connected to the lower ends of the corresponding second rotating rods, and each sleeve wall has two symmetrically opened slots. The two first rotating rods are respectively movably sleeved inside the corresponding sleeves, and each rod wall is symmetrically fixedly connected to two limiting rods. The two limiting rods are respectively slidably connected to the inner walls of the corresponding slots.

[0008] Preferably, the cleaning mechanism includes a fixed plate, a third rotating rod, and a cleaning brush. The fixed plate is fixedly connected to the inner wall of the treatment tank, the third rotating rod is rotatably connected to the side wall of the fixed plate, one end of the third rotating rod passes through the fixed plate and is fixedly connected to the cleaning brush, and the cleaning brush is matched with the filter plate.

[0009] Preferably, a first bevel gear is fixedly connected to the end of the third rotating rod away from the cleaning brush, and a second bevel gear is symmetrically fixedly connected to the upper end wall of each of the two first rotating rods, with the first bevel gear meshing with the corresponding second bevel gear.

[0010] Preferably, both of the first air guide pipes are fixedly connected to a solenoid valve.

[0011] Preferably, each of the filter screens is a wire mesh.

[0012] Compared with the prior art, the present invention provides a flue gas treatment device for thermal power plants, which has the following beneficial effects:

[0013] 1. The exhaust gas treatment device of this thermal power plant, through the set treatment tank, can place desiccant inside the treatment tank so as to absorb the moisture in the exhaust gas during the exhaust gas emission process, avoid dilution of the absorbent liquid, effectively ensure the treatment effect of the exhaust gas, and at the same time, minimize the rust and corrosion of the exhaust gas emission pipes.

[0014] 2. The exhaust gas treatment device of this thermal power plant, through the installation of two cleaning mechanisms, can drive the two cleaning mechanisms to rotate while the motor is working, thereby cleaning the surface of the two filter plates and minimizing the clogging of the two cleaning plates. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of a tail gas treatment device for a thermal power plant proposed in this invention.

[0016] Figure 2 for Figure 1 A cross-sectional view of the intermediate processing tank;

[0017] Figure 3 for Figure 2 Enlarged view of the structure of part A in the middle section.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1 First air guide pipe, 2 T-connector, 3 Second air guide pipe, 4 Processing tank, 5 Cover plate, 6 Partition plate, 7 Filter screen, 8 Electric heating plate, 9 First air outlet pipe, 10 Second air outlet pipe, 11 Filter plate, 12 Motor, 13 First rotating rod, 14 Cutting tool, 15 Second rotating rod, 16 Sleeve, 17 Gear, 18 Limiting rod, 19 Fixing plate, 20 Third rotating rod, 21 Cleaning brush, 22 First bevel gear, 23 Second bevel gear. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3 A tail gas treatment device for a thermal power plant includes a first gas guide pipe 1. A three-way pipe 2 is fixedly connected to one end of the first gas guide pipe 1, and two second gas guide pipes 3 are fixedly connected through the three-way pipe 2. A treatment tank 4 is fixedly connected to the other end of each of the two second gas guide pipes 3. A cover plate 5 is fixedly connected to the upper end of each of the two treatment tanks 4. A partition plate 6 is fixedly connected inside each treatment tank 4. Multiple openings are provided inside the partition plate 6. A filter screen 7 is fixedly installed inside each opening. An electric heating plate 8 is fixedly connected to the bottom inner wall of the treatment tank 4. A crushing mechanism is provided on one side of the partition plate 6. A transmission mechanism is sleeved inside the cover plate 5. The crushing mechanism is drivenly connected to the transmission mechanism. Air outlets are provided on both sides of the treatment tank 4. A first air outlet pipe 9 and a second air outlet pipe 10 are fixedly sleeved inside the two air outlets, respectively. A filter plate 11 corresponding to the position of the two air outlets is fixedly connected to the inner wall of the treatment tank 4. Two cleaning mechanisms are symmetrically arranged on the inner wall of the treatment tank 4. Both cleaning mechanisms are drivenly connected to the crushing mechanism.

[0022] The crushing mechanism includes a motor 12 and two first rotating rods 13. The motor 12 is fixedly connected to the bottom outer wall of the processing barrel 4. The two first rotating rods 13 are symmetrically arranged above the partition 6 and their lower ends are rotatably connected to the partition 6. The lower end of one of the first rotating rods 13 passes through the processing barrel 4 and is fixedly connected to the output end of the motor 12. By using the motor 12, the corresponding rotating rod can be driven to rotate when the motor 12 is working, thereby crushing the desiccant placed inside the processing barrel 4.

[0023] The transmission mechanism includes two second rotating rods 15, two sleeves 16, and two gears 17. The two second rotating rods 15 are symmetrically rotatably connected to the inside of the cover plate 5, and their upper ends are respectively fixedly connected to the corresponding gears 17. The two gears 17 are meshed together. The two sleeves 16 are respectively fixedly connected to the lower ends of the corresponding second rotating rods 15, and each sleeve wall has two symmetrically opened slots. The two first rotating rods 13 are respectively movably sleeved inside the corresponding sleeves 16, and each rod wall has two symmetrically fixedly connected to two limiting rods 18. The two limiting rods 18 are respectively slidably connected to the inner walls of the corresponding slots. By using the two limiting rods 18, the two sleeves 16 can be driven to rotate during the rotation of the first rotating rods 13, thereby realizing the synchronous rotation of the two first rotating rods 13.

[0024] The cleaning mechanism includes a fixed plate 19, a third rotating rod 20, and a cleaning brush 21. The fixed plate 19 is fixedly connected to the inner wall of the treatment tank 4. The third rotating rod 20 is rotatably connected to the side wall of the fixed plate 19. One end of the third rotating rod 20 passes through the fixed plate 19 and is fixedly connected to the cleaning brush 21. The cleaning brush 21 is matched with the filter plate 11. By using the cleaning brush 21, the surface of the filter plate 11 can be cleaned during the rotation of the cleaning brush 21, thereby ensuring the normal operation of the filter plate 11.

[0025] The end of the third rotating rod 20 away from the cleaning brush 21 is fixedly connected to a first bevel gear 22. The upper walls of the two first rotating rods 13 are symmetrically fixedly connected to second bevel gears 23. The first bevel gear 22 meshes with the corresponding second bevel gear 23. By utilizing the meshing connection between the first bevel gear 22 and the second bevel gear 23, the corresponding third rotating rod 20 can be driven to rotate during the rotation of the first rotating rod 13, thereby driving the corresponding cleaning brush 21 to work.

[0026] Solenoid valves are fixedly connected to the walls of both first air guide pipes 1. By using the solenoid valves, the normal emission of exhaust gas can be ensured when the desiccant in one of the treatment tanks 4 needs to be dried.

[0027] Each filter screen 7 is made of iron wire mesh. The iron wire mesh is used to prevent the filter screen 7 from burning due to excessive temperature of the electric heating plate 8.

[0028] In summary, the exhaust gas treatment device of this thermal power plant, during operation, involves adding desiccant into the two treatment tanks 4, opening and closing the two solenoid valves, opening the first exhaust pipe 9 and closing the second exhaust pipe 10, allowing the exhaust gas to enter the corresponding treatment tank 4 through the first guide pipe 1 and the corresponding second guide pipe 3, where it is dried by the desiccant before being discharged. This effectively absorbs moisture from the exhaust gas. When the desiccant's water absorption effect decreases, the motor 12 is started and energized to the electric heating plate 8, opening the second exhaust pipe 10 and closing the first exhaust pipe 9. The output of the motor 12 drives the corresponding first rotating rod 13 to rotate, and this first rotating rod 13 drives the other first rotating rod 13 through a transmission mechanism. One rotating rod 13 rotates synchronously, and the two first rotating rods 13 drive the corresponding multiple blades 14 to rotate, thereby crushing the desiccant. During the crushing process, the electric heating plate 8 can heat the desiccant and discharge the moisture in the desiccant through the second air outlet pipe 10. While the two first rotating rods 13 are rotating, the two first rotating rods 13 drive the corresponding third rotating rods 20 to rotate through the meshing connection between the corresponding first bevel gears 22 and second bevel gears 23. The two third rotating rods 20 drive the corresponding cleaning brushes 21 to rotate, thereby cleaning the two filter plates 11, avoiding surface clogging of the two filter plates 11 and ensuring normal filtration effect.

[0029] It should be noted that the term "comprising" or any other variation thereof is 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] 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 waste gas treatment device for a thermal power plant, characterized in that, The system includes a first air guide pipe (1), with a three-way pipe (2) fixedly connected to one end of the first air guide pipe (1) and two second air guide pipes (3) fixedly connected through the three-way pipe (2). The other ends of the two second air guide pipes (3) are fixedly connected to a processing tank (4). A cover plate (5) is fixedly connected to the upper end of each of the two processing tanks (4). A partition plate (6) is fixedly connected inside each processing tank (4), and the partition plate (6) has multiple openings inside. An electric heating plate (8) is fixedly connected to the bottom inner wall of each processing tank (4). A crushing mechanism is provided on one side of the partition (6), and a transmission mechanism is sleeved inside the cover plate (5). The crushing mechanism is connected to the transmission mechanism. Air outlets are provided on both sides of the processing barrel (4). A first air outlet pipe (9) and a second air outlet pipe (10) are fixedly sleeved inside the two air outlets respectively. A filter plate (11) corresponding to the position of the two air outlets is fixedly connected to the inner wall of the processing barrel (4). Two cleaning mechanisms are symmetrically arranged on the inner wall of the processing barrel (4). Both cleaning mechanisms are connected to the crushing mechanism. The crushing mechanism includes a motor (12) and two first rotating rods (13). The motor (12) is fixedly connected to the bottom outer wall of the processing barrel (4). The two first rotating rods (13) are symmetrically arranged above the partition (6) and the lower end of the rods are rotatably connected to the partition (6). The rods of the two first rotating rods (13) are fixedly sleeved with multiple blades (14). The lower end of one of the first rotating rods (13) penetrates the processing barrel (4) and is fixedly connected to the output end of the motor (12). The cleaning mechanism includes a fixed plate (19), a third rotating rod (20), and a cleaning brush (21). The fixed plate (19) is fixedly connected to the inner wall of the treatment tank (4). The third rotating rod (20) is rotatably connected to the side wall of the fixed plate (19). One end of the third rotating rod (20) passes through the fixed plate (19) and is fixedly connected to the cleaning brush (21). The cleaning brush (21) matches the filter plate (11). A first bevel gear (22) is fixedly connected to the end of the third rotating rod (20) away from the cleaning brush (21). A second bevel gear (23) is symmetrically fixedly connected to the upper end of the two first rotating rods (13). The first bevel gear (22) meshes with the corresponding second bevel gear (23).

2. The exhaust gas treatment device for a thermal power plant according to claim 1, characterized in that, The transmission mechanism includes two second rotating rods (15), two sleeves (16), and two gears (17). The two second rotating rods (15) are symmetrically rotatably connected to the inside of the cover plate (5) and their upper ends are respectively fixedly connected to the corresponding gears (17). The two gears (17) are meshed together. The two sleeves (16) are respectively fixedly connected to the lower ends of the corresponding second rotating rods (15) and the tube walls are symmetrically opened with two slots. The two first rotating rods (13) are respectively movably sleeved inside the corresponding sleeves (16) and the rod walls are symmetrically fixedly connected with two limiting rods (18). The two limiting rods (18) are respectively slidably connected to the inner walls of the corresponding slots.

3. The exhaust gas treatment device for a thermal power plant according to claim 1, characterized in that, Solenoid valves are fixedly connected to the walls of both first air pipes (1).

4. The exhaust gas treatment device for a thermal power plant according to claim 1, characterized in that, Each of the openings is fitted with a filter screen (7).

5. The exhaust gas treatment device for a thermal power plant according to claim 4, characterized in that, Each of the filter screens (7) is made of wire mesh.

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