Carbon emission reduction device for thermal power plant

Abstract

The utility model discloses a thermal power plant carbon emission reduction device which comprises a treatment box, ammonia water is arranged in the treatment box, a drain valve is fixedly communicated with the bottom of the left side of the treatment box, and an L-shaped pipe is fixedly communicated with the top of the right side of the treatment box; and the air pump is fixedly mounted at the top of the treatment box. By arranging a series of structures, particle solid residues in the flue gas can be conveniently filtered and intercepted in advance before the flue gas is supplied into the ammonia water for reaction, the phenomenon that the replacement frequency of the ammonia water is increased due to the particle solid residues is reduced, so that the subsequent long-term replacement cost of the ammonia water is reduced, and carbon dioxide in the flue gas is absorbed and purified by utilizing the ammonia water; the two stainless steel filter cartridges can be conveniently and alternately utilized, moved out, replaced and utilized, the flue gas extraction treatment work does not need to be frequently stopped, the shutdown waiting time is shortened, the working efficiency is improved, and a regular automatic alarm is conveniently given to remind personnel to replace ammonia water or the stainless steel filter cartridges; and personnel can conveniently know the replacement work.

Description

Technical Field

[0001] This utility model relates to the field of carbon emission reduction technology in thermal power plants, specifically a carbon emission reduction device for thermal power plants. Background Technology

[0002] Thermal power plants generally refer to thermal power plants, combined heat and power plants, etc. They are factories that use the heat energy generated by the combustion of solid or liquid fuels such as coal, oil, and natural gas to convert into kinetic energy to produce electricity. According to the type of fuel, they can be divided into coal-fired power plants, oil-fired power plants, and gas-fired power plants. Thermal power plants are an important part of electricity production.

[0003] Coal-fired power plants are major carbon emitters, and their flue gas contains large amounts of carbon dioxide. With global warming, carbon dioxide emissions must be reduced to alleviate the climate crisis. Current methods for treating carbon emissions from coal-fired power plants often employ ammonia injection or ammonia immersion, using ammonia solution to react with the flue gas and adsorb and purify CO2 to achieve carbon reduction. However, these methods still have the following shortcomings:

[0004] The flue gas contains a large amount of particulate solids. Directly mixing these particulate solids with ammonia solution in large quantities undoubtedly increases the frequency of ammonia replacement and the long-term replacement cost. (Although existing technologies also have measures to filter and intercept solids in the flue gas in advance using filters, these filters need to be replaced regularly, leading to frequent shutdowns of the flue gas treatment process and reducing work efficiency.) In view of this, this application proposes a carbon emission reduction device for thermal power plants to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a carbon emission reduction device for thermal power plants to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a carbon emission reduction device for thermal power plants, comprising:

[0007] The treatment tank contains ammonia water. A drain valve is fixedly connected to the bottom left side of the treatment tank, and an L-shaped pipe is fixedly connected to the top right side of the treatment tank.

[0008] An air pump is fixedly installed on the top of the treatment box; the air pump is used to provide suction force for the flue gas from the top and to transport it downwards.

[0009] The gas supply component is connected and fixed to the gas outlet of the gas pump and located in the ammonia water. The gas supply component is used to directly disperse and discharge the flue gas into the ammonia water when the gas pump delivers the flue gas downwards. The flue gas reacts with the ammonia water to absorb and purify the carbon dioxide in the flue gas, thereby reducing carbon dioxide emissions.

[0010] The filter assembly consists of two sets, both fixed to the top of the processing box. Two air vents are connected and fixed to the adjacent side of the two filter assemblies. The filter assembly is used to pre-filter and intercept particulate impurities in the flue gas when the air pump draws in the flue gas, thereby reducing the phenomenon of increased ammonia water replacement frequency caused by particulate solids.

[0011] The air direction switching component is connected and fixed between four air pipes and sealed and rotatably sleeved on the outside of the air pump inlet. The top of the air direction switching component is connected and fixed with an L-shaped flue gas inlet pipe. The air direction switching component is used to switch the flue gas intake filtration direction between two filter components, so as to achieve alternating filtration and cleaning utilization on both sides without stopping the machine. The L-shaped flue gas inlet pipe is used to connect to the external thermal power plant equipment flue gas emission pipe or branch pipe.

[0012] The timed reminder component is fixedly installed on the top left side of the treatment box; the timed reminder component is used to remind personnel to replace the filter and ammonia water at set times.

[0013] Preferably, the gas supply assembly includes a vertical pipe connected to and fixed at the bottom of the gas pump outlet, and the vertical pipe has multiple gas outlet holes on all four sides, and the vertical pipe is located in ammonia water.

[0014] Preferably, the filter assembly includes a circular box with an open top. The bottom of each of the two circular boxes is fixedly connected to the top of the processing box with an I-shaped support. An internally threaded cover is threaded onto the outer side of the top of the circular box. A support ring is fixedly installed inside the circular box. A stainless steel filter cartridge is movably fitted inside the circular box and is in contact with the top of the corresponding support ring. The top of the stainless steel filter cartridge is open and fixedly connected with a pull ring. The adjacent sides of the two circular boxes are respectively connected and fixed to two corresponding air pipes. The stainless steel filter cartridge is located between the two corresponding air pipes.

[0015] Preferably, the gas direction switching assembly includes a circular box with an open bottom. The top of the circular box is connected and fixed to the bottom end of an L-shaped flue gas inlet pipe. The two sides of the circular box are respectively connected and fixed to two corresponding vent pipes. A rotating seat is sealed and movably fitted inside the circular box. The top and bottom of the rotating seat are provided with L-shaped through holes. The opposing sides of the two L-shaped through holes are respectively aligned and connected to the L-shaped flue gas inlet pipe and the air inlet of the air pump. The right ends of the two vent pipes on the left side are respectively aligned and connected to the left side of the corresponding L-shaped through holes. A rotating cover is sealed and rotatably fitted on the bottom outer side of the circular box and fixedly connected to the bottom of the rotating seat. The rotating cover is sealed and rotatably fitted on the outside of the air inlet of the air pump. A T-bolt is tightly contacted on the bottom left side of the circular box on the right side. The rotating cover is threaded onto the T-bolt.

[0016] Preferably, the timed reminder component includes a timed controller fixedly installed on the top left side of the processing box, and a red light and green light and sound alarm are fixedly and electrically connected to the top of the timed controller.

[0017] Preferably, the outer top of the round box is provided with an external thread, and the inner side of the internal threaded cover is provided with an internal thread that meshes with the corresponding external thread.

[0018] Preferably, the outer side of the rotary seat is provided with a sealing sleeve that is in contact with the inner wall of the circular box, and two connecting holes are opened on the left side of the sealing sleeve, which are respectively connected to the corresponding L-shaped through holes.

[0019] Preferably, the top of the rotating cover has a circular through hole, and two first sealing bearings are fixedly fitted inside the circular through hole. The inner ring of the first sealing bearing is fixedly fitted to the outer side of the air inlet of the air pump. The bottom right side of the rotating cover has a threaded hole for threaded connection with a T-bolt.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. By using the L-shaped flue gas inlet pipe, treatment box, air pump, air pipe, air supply component, filter component and air direction switching component, the particulate solids in the flue gas can be filtered and intercepted in advance before the flue gas is supplied to the ammonia water for reaction, reducing the phenomenon of increased ammonia water replacement frequency caused by particulate solids, thereby reducing the long-term replacement cost of ammonia water. The ammonia water is used to absorb and purify carbon dioxide in the flue gas to reduce carbon dioxide emissions.

[0022] 2. Through the combination of the filter components, vent pipes and air direction switching components, the two stainless steel filter cartridges can be used and removed for replacement alternately. By using the alternating use and replacement, the flue gas extraction and treatment work does not need to be stopped frequently, reducing downtime and improving work efficiency.

[0023] 3. The timed reminder component can automatically alarm and remind personnel to replace ammonia or stainless steel filter cartridges at set times, making it convenient for personnel to know when to carry out the replacement work. Since ammonia can be used multiple times before replacement, it also has the effect of reducing the frequency of downtime.

[0024] This invention incorporates a series of structures that facilitate the pre-filtration and interception of particulate solids in the flue gas before it is fed into the ammonia solution for reaction. This reduces the frequency of ammonia replacement caused by particulate solids, thereby lowering the long-term replacement costs of the ammonia solution. The ammonia solution absorbs and purifies carbon dioxide in the flue gas, reducing carbon dioxide emissions. Furthermore, it allows for the alternating use and replacement of the two stainless steel filter cartridges, eliminating the need for frequent shutdowns of the flue gas extraction process, reducing downtime, improving work efficiency, and providing a timed automatic alarm to remind personnel to replace the ammonia solution or the stainless steel filter cartridges, making it convenient for personnel to know when to perform the replacement work. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the structure of a carbon emission reduction device for a thermal power plant proposed in this utility model;

[0026] Figure 2 This is a top view of a carbon emission reduction device for a thermal power plant proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the main cross-sectional structure of a carbon emission reduction device for a thermal power plant proposed in this utility model;

[0028] Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram.

[0029] In the diagram: 100, L-shaped flue gas inlet pipe; 1, treatment box; 101, L-shaped pipe; 102, drain valve; 2, air pump; 201, vertical pipe; 202, air outlet; 3, round box; 301, internal threaded sleeve; 302, support ring; 303, vent pipe; 4, stainless steel filter cartridge; 5, round box; 501, round rotating seat; 502, L-shaped through hole; 503, rotating cover; 504, T-bolt; 6, timer controller; 601, red light and sound alarm; 602, green light and sound alarm. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 4 As shown in this embodiment, a carbon emission reduction device for a thermal power plant includes:

[0032] The treatment tank 1 contains ammonia water. A drain valve 102 is fixedly connected to the bottom left side of the treatment tank 1, and an L-shaped pipe 101 is fixedly connected to the top right side of the treatment tank 1.

[0033] Air pump 2 is fixedly installed on the top of the treatment box 1; the air pump 2 is used to provide suction force for the flue gas from the top and to perform downward conveying work.

[0034] The gas supply component is connected to and fixed at the outlet of the gas pump 2 and located in the ammonia water. The gas supply component is used to directly disperse and discharge the flue gas into the ammonia water when the gas pump 2 delivers the flue gas downwards. The flue gas reacts with the ammonia water to absorb and purify the carbon dioxide in the flue gas, thereby reducing carbon dioxide emissions.

[0035] The filter assembly consists of two sets, both fixed on the top of the processing box 1. Two air vents 303 are connected and fixed on the side of the two filter assemblies that are close to each other. The filter assembly is used to filter and intercept particulate impurities in the flue gas in advance when the air pump 2 draws in the flue gas, thereby reducing the phenomenon of increased ammonia water replacement frequency caused by particulate solids.

[0036] The air direction switching component is connected and fixed between four air pipes 303 and sealed and rotatably sleeved on the outside of the air inlet of the air pump 2. The top of the air direction switching component is connected and fixed with an L-shaped flue gas inlet pipe 100. The air direction switching component is used to switch the flue gas intake filtration direction between two filter components, so as to achieve alternating filtration and cleaning utilization of both sides without stopping the machine. The L-shaped flue gas inlet pipe 100 is used to connect to the external thermal power plant equipment flue gas emission pipe or branch pipe.

[0037] The timed reminder component is fixedly installed on the top left side of the treatment box 1; the timed reminder component is used to remind personnel to replace the filter and ammonia water at set times.

[0038] Specifically, the gas supply assembly includes a vertical pipe 201 connected to and fixed at the bottom of the gas outlet of the gas pump 2. Multiple air outlets 202 are provided on all four sides of the vertical pipe 201. The vertical pipe 201 is located inside the ammonia water. The vertical pipe 201 and the air outlets 202 work together so that when the gas pump 2 delivers flue gas downwards, the flue gas enters the vertical pipe 201 and is then dispersed into the ammonia water through the multiple air outlets 202 to react with the ammonia water. The ammonia water is used to absorb and purify the carbon dioxide in the flue gas, thereby reducing carbon dioxide emissions.

[0039] Furthermore, the filter assembly includes two circular boxes 3 with open tops. The bottoms of both circular boxes 3 are fixedly connected to the top of the treatment box 1 via I-shaped supports. An internally threaded cover 301 is threaded onto the outer side of the top of each circular box 3. The outer top of the circular box 3 has an external thread, and the inner side of the internally threaded cover 301 has an internal thread that meshes with the corresponding external thread. A support ring 302 is fixedly installed inside the circular box 3. A stainless steel filter cartridge 4 is movably fitted inside the circular box 3, making contact with the top of the corresponding support ring 302. The top of the stainless steel filter cartridge 4 is open and fixedly connected with a pull ring. The two circular boxes 3 are adjacent to each other... One side is connected and fixed to two corresponding vent pipes 303 respectively, and the stainless steel filter cartridge 4 is located between the two corresponding vent pipes 303; the circular box 3, I-shaped support, internal threaded sleeve 301, support ring 302, stainless steel filter cartridge 4 and pull ring are set up to cooperate. When the air pump 2 starts its air inlet to draw in the circular box 3, the circular box 3 draws in flue gas through the corresponding upper vent pipe 303. The flue gas passes through the stainless steel filter cartridge 4 and is then drawn by the air pump 2 through the corresponding lower vent pipe 303. The stainless steel filter cartridge 4 filters and intercepts the particulate solids in the flue gas in advance, reducing the phenomenon of increased ammonia water replacement frequency caused by particulate solids.

[0040] Furthermore, the gas direction switching component includes a circular box 5 with an open bottom. The top of the circular box 5 is connected and fixed to the bottom end of the L-shaped flue gas inlet pipe 100. The two sides of the circular box 5 are respectively connected and fixed to two corresponding vent pipes 303. A circular rotating seat 501 is sealed and movably fitted inside the circular box 5. The top and bottom of the circular rotating seat 501 are provided with L-shaped through holes 502. The opposing sides of the two L-shaped through holes 502 are respectively aligned and connected to the air inlet of the L-shaped flue gas inlet pipe 100 and the air pump 2. The right ends of the two vent pipes 303 on the left side are respectively aligned and connected to the left side of the corresponding L-shaped through holes 502. A sealing sleeve that movably contacts the inner wall of the circular box 5 is adhesively fitted on the outside of the circular rotating seat 501. Two connecting holes are opened on the left side of the sealing sleeve, which are respectively connected to the corresponding L-shaped through holes 502. The bottom of the circular box 5 is sealed and fixed. The side-sealed rotating sleeve is equipped with a rotating cover 503 fixedly connected to the bottom of the circular rotating seat 501. A second sealing bearing is fixedly fitted inside the rotating cover 503. The inner ring of the second sealing bearing is fixedly fitted to the outer side of the circular box 5, which achieves the effect of sealing and rotating the rotating cover 503. The rotating cover 503 is sealed and rotated on the outside of the air inlet of the air pump 2. A circular through hole is opened at the top of the rotating cover 503. Two first sealing bearings are fixedly fitted inside the circular through hole. The inner ring of the first sealing bearing is fixedly fitted to the outer side of the air inlet of the air pump 2, which achieves the effect of sealing and rotating the rotating cover 503. A T-bolt 504 is tightly contacted on the bottom left side of the circular box 3 on the right side. The rotating cover 503 is threadedly fitted onto the T-bolt 504. A threaded hole for threaded connection with the T-bolt 504 is opened on the bottom right side of the rotating cover 503.

[0041] The circular box 5, circular rotating seat 501, L-shaped through hole 502, rotating cover 503, and T-bolt 504 are configured to work together. When the air pump 2 starts, it first provides suction force to the circular box 3 on the left through the lower L-shaped through hole 502 and the lower left vent pipe 303. The circular box 3 on the left then draws in smoke through the upper left vent pipe 303, the upper L-shaped through hole 502, and the L-shaped smoke inlet pipe 100. When the operator rotates the T-bolt 504 in the opposite direction to release the lock on the rotating cover 503, pulling the T-bolt 504 causes the rotating cover 503 to rotate 180 degrees. The rotating cover 503 then causes the circular rotating seat 501 to rotate 180 degrees. At this time, the circular rotating seat 501 causes the two L-shaped through holes 502 to rotate to their respective positions. Align the two vent pipes 303 on the right with the flue gas and filter particles from the round box 3 on the right. At this time, the operator can reverse the left inner threaded cover 301 and remove the stainless steel filter cartridge 4 on the left for cleaning or replacement. When switching back for reuse, rotate the rotating cover 503 180 degrees to drive the round rotating seat 501 to rotate the two L-shaped through holes 502 until they are aligned with the two vent pipes 303 on the left. Then the stainless steel filter cartridge 4 on the right can be removed for cleaning or replacement. This process can be repeated to facilitate the alternating use and replacement of the two stainless steel filter cartridges 4. The alternating use and replacement do not require stopping the flue gas extraction and treatment work, thus reducing the frequency of downtime.

[0042] Furthermore, the timed reminder component includes a timer controller 6 fixedly installed on the top left side of the processing box 1. A red light and sound alarm 601 and a green light and sound alarm 602 are fixedly and electrically connected to the top of the timer controller 6. The timer controller 6, the red light and sound alarm 601, and the green light and sound alarm 602 work together to control the red light and sound alarm 601 to turn on at the time interval required by the on-site environment for ammonia water replacement. The timer controller 6 also controls the green light and sound alarm 602 to turn on at the time interval. When the set time is reached, the timer controller 6 controls the red light and sound alarm 601 or the green light and sound alarm 602 to turn on at the set time to provide an alarm reminder. Personnel can observe the red light and sound alarm 601 or the green light and sound alarm 602 to perform the ammonia water or stainless steel filter cartridge 4 replacement work accordingly, realizing the effect of timed automatic alarm reminder for personnel to replace ammonia water or stainless steel filter cartridge 4.

[0043] The usage method of this embodiment is as follows: When using the carbon emission reduction device for thermal power plants, connect the L-shaped flue gas inlet pipe 100 to the external flue gas emission pipe or branch pipe of the thermal power plant equipment, turn on the air pump 2, and the air inlet of the air pump 2 first provides suction force to the left circular box 3 through the lower L-shaped through hole 502 and the lower left vent pipe 303. The left circular box 3 then draws in flue gas through the upper left vent pipe 303, the upper L-shaped through hole 502, and the L-shaped flue gas inlet pipe 100 in sequence. When the flue gas enters the left circular box 3, the flue gas passes through the left stainless steel... After passing through the steel filter cartridge 4, the flue gas is drawn by the air pump 2 through the corresponding vent pipe 303 below. The air pump 2 then delivers the drawn flue gas down into the vertical pipe 201. The flue gas is then dispersed into the ammonia water through multiple air outlets 202 to react with the ammonia water. The ammonia water is used to absorb and purify the carbon dioxide in the flue gas, thereby reducing carbon dioxide emissions. When the flue gas passes through the stainless steel filter cartridge 4 on the left, the stainless steel filter cartridge 4 filters and intercepts the particulate solids in the flue gas in advance, reducing the phenomenon that particulate solids cause an increase in the frequency of ammonia water replacement, thereby reducing the long-term replacement cost of ammonia water.

[0044] When the stainless steel filter cartridge 4 on the left needs to be removed for cleaning or replacement, the operator should reverse the T-bolt 504 to release the lock on the rotating cover 503. Pulling the T-bolt 504 will rotate the rotating cover 503 180 degrees, causing the rotating cover 503 to rotate the circular base 501 180 degrees. At this point, the circular base 501 will rotate the two L-shaped through holes 502 until they align and connect with the two vent pipes 303 on the right, thus drawing flue gas and filter particles from the circular box 3 on the right. Turning the T-bolt 504 forward will press it upwards against the bottom of the circular box 3 on the left, locking the rotating cover 503. The operator can then reverse the direction to remove the internally threaded sleeve 301 on the left, and then the left... The stainless steel filter cartridge 4 on the side is taken out upwards for cleaning or replacement. After cleaning or replacement, it is placed back into the round box 3 on the left. Then, the internal threaded cover 301 on the left is screwed onto the corresponding round box 3. When it is to be used again, the rotating cover 503 is rotated 180 degrees, which drives the round rotating seat 501 to drive the two L-shaped through holes 502 to rotate until they are aligned and connected with the two vent pipes 303 on the left. Then the stainless steel filter cartridge 4 on the right can be taken out for cleaning or replacement. This process is repeated to achieve the effect of conveniently using and removing the two stainless steel filter cartridges 4 alternately. By using the alternating use and replacement, it is not necessary to frequently stop the flue gas extraction and treatment work, reducing downtime and waiting time and improving work efficiency.

[0045] In addition, for the replacement of ammonia water or stainless steel filter cartridge 4, the personnel can pre-set the time interval for the red light and sound alarm 601 to be turned on using the timer controller 6 according to the ammonia water replacement interval required by the site environment, and pre-set the time interval for the green light and sound alarm 602 to be turned on using the timer controller 6 according to the replacement time required by the stainless steel filter cartridge 4. When the set time is reached, the timer controller 6 controls the red light and sound alarm 601 or the green light and sound alarm 602 to be turned on at the set time to provide an alarm reminder. The personnel can replace the ammonia water or stainless steel filter cartridge 4 accordingly by observing the red light and sound alarm 601 or the green light and sound alarm 602. This achieves the effect of automatically reminding the personnel to replace the ammonia water or stainless steel filter cartridge 4 at set times. Since the ammonia water can be used multiple times before replacement, it also has the effect of reducing the frequency of downtime. When replacing the ammonia water, the ammonia water in the treatment tank 1 is discharged through the drain valve 102, and then new ammonia water is added through the L-shaped pipe 101. After the flue gas is discharged into the treatment tank 1 for treatment, the gas that rises is also discharged through the L-shaped pipe 101.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A carbon emission reduction device for a thermal power plant, comprising a treatment tank (1), characterized in that: include: A treatment tank (1) is filled with ammonia water. A drain valve (102) is fixedly connected to the bottom left side of the treatment tank (1), and an L-shaped pipe (101) is fixedly connected to the top right side of the treatment tank (1). An air pump (2) is fixedly installed on the top of the processing box (1); The gas supply assembly is connected to the outlet of the gas pump (2) and located in the ammonia water; The filter assembly consists of two sets, both of which are fixed on the top of the processing box (1). Two air pipes (303) are connected and fixed on the side of the two filter assemblies that are close to each other. The air direction switching assembly is connected and fixed between four air pipes (303) and sealed and rotated on the outside of the air inlet of the air pump (2). The top of the air direction switching assembly is connected and fixed with an L-shaped flue gas inlet pipe (100). The timed reminder component is fixedly installed on the top left side of the processing box (1).

2. The carbon emission reduction device for thermal power plant according to claim 1, characterized in that: The gas supply assembly includes a vertical pipe (201) connected to and fixed at the bottom of the gas outlet of the gas pump (2). Multiple gas outlets (202) are provided on all four sides of the vertical pipe (201), and the vertical pipe (201) is located in ammonia water.

3. The carbon emission reduction device for thermal power plant according to claim 1, characterized in that: The filter assembly includes a round box (3) with an open top. The bottom of each of the two round boxes (3) is fixedly connected to the top of the processing box (1) with an I-shaped support. The outer side of the top of the round box (3) is threaded with an inner threaded cover (301). A support ring (302) is fixedly installed inside the round box (3). A stainless steel filter cartridge (4) is movably fitted inside the round box (3) and is in contact with the top of the corresponding support ring (302). The top of the stainless steel filter cartridge (4) is open and fixedly connected with a pull ring. The two round boxes (3) are respectively connected and fixedly connected to two corresponding air pipes (303) on their adjacent sides. The stainless steel filter cartridge (4) is located between the two corresponding air pipes (303).

4. The carbon emission reduction device for thermal power plant according to claim 1, characterized in that: The airflow switching assembly includes a circular box (5) with an open bottom. The top of the circular box (5) is connected and fixed to the bottom end of an L-shaped flue gas inlet pipe (100). The two sides of the circular box (5) are respectively connected and fixed to two corresponding air pipes (303). A rotating seat (501) is sealed and movably fitted inside the circular box (5). The top and bottom of the rotating seat (501) are both provided with L-shaped through holes (502). The opposing sides of the two L-shaped through holes (502) are respectively connected to the L-shaped flue gas inlet pipe (100) and the air pump ( 2) The air inlets are aligned and connected. The right ends of the two air pipes (303) on the left side are aligned and connected with the left side of the corresponding L-shaped through holes (502). The bottom outer side of the circular box (5) is sealed and rotated with a rotating cover (503) that is fixedly connected to the bottom of the circular seat (501). The rotating cover (503) is sealed and rotated on the outside of the air inlet of the air pump (2). The bottom left side of the circular box (3) on the right side is in close contact with a T-bolt (504). The rotating cover (503) is threaded onto the T-bolt (504).

5. The carbon emission reduction device for thermal power plant according to claim 1, wherein: The timed reminder component includes a timed controller (6) fixedly installed on the top left side of the processing box (1). A red light audible and visual alarm (601) and a green light audible and visual alarm (602) are fixedly and electrically connected to the top of the timed controller (6).

6. The carbon emission reduction device of a thermal power plant according to claim 3, characterized in that: The outer top of the round box (3) is provided with an external thread, and the inner side of the internal threaded cover (301) is provided with an internal thread that meshes with the corresponding external thread.

7. The carbon emission reduction device of a thermal power plant according to claim 4, characterized in that: The outer side of the rotary base (501) is provided with a sealing sleeve that is in contact with the inner wall of the circular box (5). On the left side of the sealing sleeve, there are two connecting holes that are respectively connected to the corresponding L-shaped through holes (502).

8. The carbon emission reduction device of a thermal power plant according to claim 4, characterized in that: The top of the rotating cover (503) has a circular through hole, and two first sealing bearings are fixedly fitted inside the circular through hole. The inner ring of the first sealing bearing is fixedly fitted to the outer side of the air inlet of the air pump (2). The bottom right side of the rotating cover (503) has a threaded hole for threaded connection with the T-bolt (504).

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