Flue gas filtering device

Abstract

The present disclosure relates to a flue gas filtering device, comprising: a first tank body, a first cavity is formed in the first tank body, an air inlet is arranged on the first tank body, the air inlet is communicated with an air inlet pipe which is isolated from the first cavity, an air outlet and a liquid outlet which are communicated with the first cavity are arranged on the first tank body; an impeller, the impeller is rotatably arranged in the first tank body, a one-way valve is arranged in the impeller, an inlet of the one-way valve is communicated with the air inlet pipe; a second tank body, a second cavity is formed in the second tank body, an outlet of the one-way valve is communicated with the second cavity, wherein the first cavity is communicated with the second cavity through a communication structure, the communication structure is arranged to spray the gas flowing through itself to the impeller; a liquid pump, the liquid pump is communicated with the second tank body through a liquid supply pipe; and a transmission assembly, the impeller is drivingly connected with the liquid pump through the transmission assembly. Through the above technical scheme, the solid particles in the carbon dioxide flue gas can be filtered.

Description

Technical Field

[0001] This disclosure relates to the field of flue gas filtration, and more specifically, to a flue gas filtration device. Background Technology

[0002] my country's power industry is mainly based on thermal power, and my country's primary energy source is coal. This energy structure determines that my country's thermal power generation is mainly achieved by burning coal.

[0003] Coal-fired power plants produce large amounts of carbon dioxide flue gas. The emitted carbon dioxide can be stored for reuse, but the carbon dioxide flue gas produced by coal-fired power plants contains a large number of solid particles, which can affect the storage and reuse of carbon dioxide. Summary of the Invention

[0004] The purpose of this disclosure is to provide a flue gas filtration device that can filter solid particles from carbon dioxide flue gas.

[0005] To achieve the above objectives, this disclosure provides a flue gas filtration device, comprising: a first tank body having a first cavity formed therein, an air inlet provided on the first tank body, an air inlet pipe connected to the air inlet and isolated from the first cavity, and an air outlet and a liquid outlet connected to the first cavity on the first tank body; an impeller rotatably disposed within the first tank body, a one-way valve disposed within the impeller, the inlet of the one-way valve being connected to the air inlet pipe; a second tank body having a second cavity formed therein, the outlet of the one-way valve being connected to the second cavity, wherein the first cavity is connected to the second cavity via a connecting structure, the connecting structure being configured to spray gas flowing through itself toward the impeller; a liquid pump connected to the second tank body via a liquid supply pipe; and a transmission assembly, the impeller being drivenly connected to the liquid pump via the transmission assembly.

[0006] Optionally, the connecting structure is configured as a plurality of spray holes disposed on the second tank body, the plurality of spray holes being arranged at intervals around the central axis of the impeller.

[0007] Optionally, the first tank is positioned above the second tank, and the nozzles are arranged from bottom to top, gradually approaching the central axis of the impeller.

[0008] Optionally, the flue gas filtration device further includes a delivery pipe, one end of which is connected to the outlet of the one-way valve and the other end of which is connected to the second cavity. The impeller is used to drive the delivery pipe to rotate, and the transmission assembly drives the delivery pipe to connect the liquid pump.

[0009] Optionally, a guide surface is provided at one end of the delivery pipe that extends into the second cavity, the guide surface being used to guide the gas in the second cavity to flow toward the connecting structure.

[0010] Optionally, the lower end of the delivery pipe extends into the second cavity and has the guide surface, which is inclined upward along the direction from the middle to the edge of the delivery pipe to guide the gas in the second cavity to flow to the connecting structure.

[0011] Optionally, the transmission assembly includes a first transmission belt, a transmission shaft, and a second transmission belt. One end of the first transmission belt passes through the second tank and is fitted onto the delivery pipe, while the other end is fitted onto the transmission shaft. One end of the second transmission belt is fitted onto the transmission shaft, and the other end is fitted onto the liquid pump.

[0012] Optionally, the second tank includes a recessed portion with an installation space, the conveying pipe passes through the installation space and communicates with the second cavity, the outer wall of the second tank has two first openings, the peripheral wall of the recessed portion has two second openings, the second tank is provided with two connecting pipes, the internal space of the connecting pipes is isolated from the second cavity, each connecting pipe is connected to one of the first openings and one of the second openings, and the two opposite ends of the first transmission belt pass through the two connecting pipes respectively.

[0013] Optionally, the delivery pipe is rotatably and sealingly connected to the recess.

[0014] Optionally, the air outlet is configured to be higher than the liquid outlet.

[0015] The above technical solution utilizes the disclosed flue gas filtration device to filter carbon dioxide flue gas. First, carbon dioxide flue gas is introduced through the inlet. Then, the flue gas flows through the inlet pipe to the impeller. The impeller's one-way valve allows the flue gas to pass through the impeller in one direction and continuously enter the second cavity. The second cavity is pre-filled with a liquid, such as water. After the carbon dioxide flue gas is introduced, solid particles mixed in with the flue gas enter the water. Simultaneously, the flue gas washed in the second cavity re-enters the first cavity through a connecting structure and is sprayed onto the impeller upon entering the first cavity. The sprayed flue gas drives the impeller to rotate, and the rotation of the impeller drives the liquid pump through a transmission component. A liquid pump continuously feeds water into the second tank until it overflows from the connecting structure into the first cavity. Simultaneously, flue gas continuously enters the second cavity and comes into contact with the liquid inside. Solid particles in the flue gas are carried by the liquid in the second cavity and discharged from the liquid outlet after entering the first cavity. The filtered and washed carbon dioxide flue gas is discharged from the gas outlet. At this point, the solid particles carried by the carbon dioxide flue gas collected at the gas outlet are significantly reduced. Therefore, the flue gas filtration device of this disclosure can effectively filter solid particles from carbon dioxide flue gas, which is beneficial for the later storage and reuse of carbon dioxide. Furthermore, when carbon dioxide flue gas is continuously fed into the gas inlet, the transmission structure continuously drives the liquid pump through the cooperation of the connecting structure and the impeller, effectively utilizing the kinetic energy of the carbon dioxide flue gas, saving energy, and reducing the filtration cost of carbon dioxide flue gas.

[0016] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the flue gas filtration device according to an embodiment of the present disclosure;

[0019] Figure 2 This is a schematic diagram of the impeller structure of the flue gas filtration device according to an embodiment of the present disclosure;

[0020] Figure 3 This is a schematic diagram of the conveying pipe of the flue gas filtration device according to an embodiment of the present disclosure;

[0021] Figure 4 This is a schematic diagram of the transmission assembly of the flue gas filtration device according to an embodiment of the present disclosure;

[0022] Figure 5 This is a schematic diagram of the structure of the second opening of the flue gas filtration device according to an embodiment of the present disclosure;

[0023] Figure 6 This is a schematic diagram of the structure of the first opening of the flue gas filtration device according to an embodiment of the present disclosure;

[0024] Figure 7 This is a schematic diagram of the connecting pipe of the flue gas filtration device according to an embodiment of the present disclosure.

[0025] Explanation of reference numerals in the attached figures

[0026] 1-First tank body; 11-First cavity; 12-Air inlet; 13-Air inlet pipe; 14-Air outlet; 15-Liquid outlet; 16-Liquid outlet pipe; 2-Impeller; 21-One-way valve; 211-Valve wall; 212-Valve core; 22-Passing space; 3-Second tank body; 31-Connecting part; 311-Spray hole; 312-First opening; 313-Second opening; 314-Connecting pipe; 32-Liquid storage part; 33-Second cavity; 34-Inner recess; 341-Connecting port; 35-Installation space; 4-Liquid pump; 41-Liquid supply pipe; 5-Transmission assembly; 51-First transmission belt; 52-Transmission shaft; 53-Second transmission belt; 6-Conveying pipe; 61-Guiding surface. Detailed Implementation

[0027] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0028] In this disclosure, unless otherwise stated, directional terms such as "up" and "down" generally refer to the relative positions of the corresponding components along the direction of gravity in their operating state, with "up" and "down" respectively corresponding to... Figure 2 In this disclosure, "upper" and "lower" refer to the inner and outer dimensions relative to the contour of the corresponding component itself, while "far" and "near" refer to the distance from a comparative reference object. Furthermore, terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not imply sequentiality or importance. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0029] According to a specific embodiment of this disclosure, a flue gas filtration device is provided, with reference to... Figure 1 and Figure 2As shown, the flue gas filtration device includes: a first tank 1, in which a first cavity 11 is formed, an air inlet 12 is provided on the first tank 1, an air inlet pipe 13 isolated from the first cavity 11 is connected to the air inlet 12, and an air outlet 14 and a liquid outlet 15 connected to the first cavity 11 are provided on the first tank 1; an impeller 2, rotatably disposed in the first tank 1, and a one-way valve 21 is provided in the impeller 2, the inlet of the one-way valve 21 being connected to the air inlet pipe 13; a second tank 3, in which a second cavity 33 is formed, and the outlet of the one-way valve 21 being connected to the second cavity 33, wherein the first cavity 11 is connected to the second cavity 33 through a connecting structure, the connecting structure being configured to spray the gas flowing through it toward the impeller 2; a liquid pump 4, which is connected to the second tank 3 through a liquid supply pipe 41; and a transmission assembly 5, in which the impeller 2 is connected to the liquid pump 4 via the transmission assembly 5.

[0030] Through the above technical solution, the flue gas filtration device of this disclosure filters carbon dioxide flue gas. First, the carbon dioxide flue gas is introduced through the inlet 12, and then the flue gas flows through the inlet pipe 13 to the impeller 2. The one-way valve 21 of the impeller 2 allows the flue gas to pass through the impeller 2 in one direction and enter the second cavity 33. The second cavity 33 is pre-filled with a liquid such as water. After the carbon dioxide flue gas is introduced, the solid particles mixed in the flue gas will enter the water. At the same time, the flue gas washed in the second cavity 33 will also re-enter the first cavity 11 through the connecting structure and be sprayed onto the impeller 2 when entering the first cavity 11. The sprayed flue gas drives the impeller 2 to rotate. The rotation of the impeller 2 can drive the liquid pump 4 through the transmission component 5. During operation, the liquid pump 4 continuously feeds water into the second tank 3 until it overflows from the connecting structure into the first cavity 11. Simultaneously, flue gas continuously enters the second cavity 33 and comes into constant contact with the liquid within it. Solid particles in the flue gas are carried by the liquid in the second cavity 33 and discharged from the liquid outlet 15 after entering the first cavity 11. The filtered and washed carbon dioxide flue gas is discharged from the gas outlet 14. At this point, the solid particles carried by the carbon dioxide flue gas collected from the gas outlet 14 are significantly reduced. Therefore, the flue gas filtration device of this disclosure can effectively filter solid particles from carbon dioxide flue gas, which is beneficial for the later storage and reuse of carbon dioxide. Furthermore, when carbon dioxide flue gas is continuously fed into the gas inlet 12, the transmission structure, through the cooperation of the connecting structure and the impeller 2, can continuously drive the liquid pump 4, effectively utilizing the kinetic energy of the carbon dioxide flue gas, saving energy, and reducing the filtration cost of carbon dioxide flue gas.

[0031] Among them, reference Figure 1 and Figure 2As shown, the first tank 1 can be a cylindrical tank. The air inlet 12 is located at the top of the first tank 1, and one end of the air inlet pipe 13 is integrally connected to the peripheral wall of the air inlet 12, while the other end extends downward and into the first tank 1. The axis of the first tank 1 coincides with the axis of the air inlet pipe 13. The impeller 2 is located inside the first tank 1, and the bottom of the air inlet pipe 13 can be rotatably and sealingly connected to the impeller 2, or the bottom of the air inlet pipe 13 can only contact the top of the impeller 2 and can slide relative to it. An outlet pipe 16 is connected to and fixedly installed at the outlet 15 to guide the outflowing liquid to the collection point. The one-way valve 21 can be constructed as a Tesla valve and includes a valve wall 211 and a valve core 212. A passage space 22 is provided inside the impeller 2, and the peripheral wall of the passage space 22 forms the valve wall 211. The valve core 212 is fixed in the passage space 22 by a bracket. The liquid pump can be a centrifugal pump or other liquid pumps. The transmission assembly 5 is connected to the operating mechanism of the liquid pump 4, so that the rotation of the impeller 2 becomes the power source for the operation of the liquid pump 4. This disclosure can also be applied to the filtration of solid particles in other flue gases.

[0032] In one embodiment provided in this disclosure, reference is made to Figure 2 As shown, the connecting structure can be constructed by multiple nozzles 311 disposed on the second tank 3, with the nozzles 311 spaced apart around the central axis of the impeller 2. Through this design, carbon dioxide flue gas in the second cavity 33 is injected into the impeller 2 through the nozzles 311, thereby driving the impeller 2 to rotate. The multiple nozzles 311 are arranged circumferentially around the impeller 2, effectively driving its rotation. The nozzles 311 connect the first cavity 11 and the second cavity 33. In other embodiments, the connecting structure can be a nozzle or a gas pipe.

[0033] In order to efficiently drive the impeller 2 to rotate rapidly, in one embodiment provided in this disclosure, reference is made to... Figure 2 As shown, the first tank 1 is positioned above the second tank 3, and the nozzle 311 is gradually positioned from bottom to top, approaching the central axis of the impeller 2. This design aligns the nozzle 311 with the impeller 2 for spraying, which facilitates the rotation of the impeller 2. The nozzle 311 has a length in its extending direction, and it is bent along this length, gradually approaching the central axis of the impeller 2 from bottom to top. The central axis of the impeller 2 is also its rotation axis. In other embodiments, the nozzle 311 can be constructed as a straight hole, simply by positioning it close to the impeller 2, or the optimal spray position can be selected based on calculations, and the nozzle 311 can be opened at that position.

[0034] In one embodiment provided in this disclosure, reference is made to Figures 2 to 4As shown, the flue gas filtration device also includes a delivery pipe 6. One end of the delivery pipe 6 is connected to the outlet of the one-way valve 21, and the other end is connected to the second cavity 33. The impeller 2 is used to drive the delivery pipe 6 to rotate, and the transmission assembly 5 drives the delivery pipe 6 and the liquid pump 4. Through the above design, the delivery pipe 6 is set to rotate together with the impeller 2. Since the delivery pipe 6 has a certain length, it is easy to connect the transmission assembly 5, and it is also easy to realize the connection between the first tank 1 and the second tank 3.

[0035] Among them, reference Figure 2 and Figure 3 As shown, one end of the delivery pipe 6 can be fixedly connected to the impeller 2, or it can be snapped to the impeller 2 through a snap-fit ​​structure, as long as the rotation of the impeller 2 can drive the rotation of the delivery pipe 6. In other embodiments, the delivery pipe 6 can be fixedly connected to the first tank 1 or the second tank 3, the impeller 2 can be fixedly connected to the air inlet pipe 13, and the air inlet pipe 13 can be rotatably connected to the first tank 1. The transmission assembly 5 drives the air inlet pipe 13 and the liquid pump 4.

[0036] In order to enable the gas delivered from the delivery pipe 6 to be rapidly guided to the connecting structure after contacting the liquid in the second cavity 33, in one embodiment provided in this disclosure, reference is made to... Figure 2 and Figure 3 As shown, a guide surface 61 is provided at one end of the conveying pipe 6 that extends into the second cavity 33. The guide surface 61 is used to guide the gas flow in the second cavity 33 to the connecting structure. With the above design, since the second tank 3 contains water, when the flue gas is discharged from the conveying pipe 6 into the second tank 3, it will temporarily accumulate at the outlet end of the conveying pipe 6, which is not conducive to the upward discharge of the flue gas. Therefore, the guide surface 61 is provided to guide the flue gas sent out from the conveying pipe 6, thereby quickly guiding the flue gas to the connecting structure, which is conducive to the rapid discharge of the flue gas into the first tank 1.

[0037] In one embodiment provided in this disclosure, reference is made to Figure 2 and Figure 3 As shown, the lower end of the conveying pipe 6 extends into the second cavity 33 and has a guiding surface 61. The guiding surface 61 slopes upwards along the direction from the middle to the edge of the conveying pipe 6 to guide the gas flow in the second cavity 33 towards the connecting structure. Through this design, the upwardly sloped guiding surface 61 facilitates the rapid guidance of the flue gas delivered from the conveying pipe 6 to the upper connecting structure. The guiding surface 61 can be an arc-shaped surface convex away from the first tank 1, or it can be an inclined surface.

[0038] In one embodiment provided in this disclosure, reference is made to Figure 2 and Figure 4As shown, the transmission assembly 5 includes a first transmission belt 51, a transmission shaft 52, and a second transmission belt 53. One end of the first transmission belt 51 passes through the second tank 3 and is fitted onto the conveying pipe 6, while the other end is fitted onto the transmission shaft 52. One end of the second transmission belt 53 is fitted onto the transmission shaft 52, and the other end is fitted onto the liquid pump 4. With this design, when the impeller 2 rotates, it drives the first transmission belt 51 to rotate. The rotation of the first transmission belt 51 drives the transmission shaft to rotate, and the rotation of the transmission shaft 52 drives the second transmission belt 53 to rotate, thereby driving the liquid pump 4 to operate.

[0039] Among them, reference Figure 2 and Figure 4 As shown, an annular groove is formed on the peripheral wall of the conveying pipe 6, and the first transmission belt 51 is fitted inside the annular groove to reduce the possibility of displacement of the first transmission belt 51 in the axial direction of the conveying pipe 6. The second transmission belt 53 is connected to the operating mechanism of the liquid pump 4. Taking the liquid pump 4 as a centrifugal pump as an example, the second transmission belt 53 is connected to the impeller of the liquid pump 4 to drive the impeller to rotate and realize the operation of the liquid pump 4 with the centrifugal pump structure. That is, the second transmission belt 53 drives the shaft-like structure to rotate, which acts as a drive motor. In other embodiments, the transmission component 5 can be a sprocket and chain drive structure, or it can be a combination of belt drive and gear drive to achieve the transmission connection.

[0040] In one embodiment provided in this disclosure, reference is made to Figures 5 to 7 As shown, the second tank 3 includes a recess 34 with an installation space 35. The conveying pipe 6 passes through the installation space 35 and communicates with the second cavity 33. The outer wall of the second tank 3 has two first openings 312, and the peripheral wall of the recess 34 has two second openings 313. The second tank 3 is provided with two connecting pipes 314. The space inside the connecting pipes 314 is isolated from the second cavity 33. Each connecting pipe 314 is connected to one first opening 312 and one second opening 313. The two opposite ends of the first transmission belt 51 pass through the two connecting pipes 314 respectively. With the above design, when the first transmission belt 51 needs to be fitted onto the conveying pipe 6, the two ends of the first transmission belt 51 extend into the installation space 35 through the first opening 312, the connecting pipe 314, and the second opening 313 respectively, and are fitted onto the conveying pipe 6 within the installation space 35, thereby achieving the connection between the first transmission belt 51 and the conveying pipe 6. At this time, since the connecting pipe 314 isolates the first transmission belt 51 from the second cavity 33, the liquid in the second cavity 33 will not come into contact with the first transmission belt 51, thereby effectively improving the service life of the first transmission belt 51. Here, in an optional embodiment, one end of the connecting pipe 314 is sealed to the recess 34, and the other end is sealed to the outer wall of the second tank 3.

[0041] Among them, reference Figures 5 to 7As shown, the second tank 3 includes a connecting part 31 and a liquid storage part 32 that are interconnected and communicate with each other. The connecting part 31 has a columnar structure and is located above the liquid storage part 32. The liquid storage part 32 is spherical. A concave part 34 is provided at the connecting part 31 and is located at the top of the entire second tank 3. The concave part 34 is recessed towards the liquid storage part 32. A first opening 312, a second opening 313, and a connecting pipe 314 are all provided on the connecting part 31. The connecting structure is provided at the top of the second tank 3 and is arranged around the concave part 34. That is, multiple spray holes 311 are evenly distributed along the circumference of the concave part 34. A connecting port 341 is opened at the bottom end of the concave part 34. The bottom end of the delivery pipe 6 passes through the connecting port 341 and extends into the second cavity 33.

[0042] To prevent liquid from entering the recess 34, refer to... Figure 2 As shown, the connecting part 31 extends into the first tank 1 and is fixedly connected to the first tank 1. The outlet 15 is located on the bottom wall of the first tank 1. When the water enters the first tank 1, it will be discharged directly from the outlet 15 to the surrounding area without accumulating too much. Therefore, the water will only be around the connecting part 31 and will not enter the recess 34. In other embodiments, a downward-sloping chamfer can be provided on the edge of the connecting part 31 away from the storage part 32. The inner side of the chamfer is connected to the spray hole 311, so as to guide the water overflowing from the spray hole 311 to the surrounding area and discharge it from the outlet 15, so as not to enter the recess 34. In another embodiment, a cover plate can be provided on the top of the recess 34. The cover plate seals the top of the recess 34 and is rotatably and sealingly connected to the conveying pipe 6, thereby preventing the water entering the first tank 1 from entering the recess 34 and reducing the phenomenon of water wetting the first transmission belt 51 and causing slippage.

[0043] In one embodiment provided in this disclosure, reference is made to Figure 2 As shown, the delivery pipe 6 is rotatably and sealingly connected to the recessed portion 34. Through this design, when the delivery pipe 6 passes through the connecting port 341 and extends into the second tank 3, a rotatable sealing connection is made to prevent water from overflowing from the connecting port 341, thereby sealing the connecting port 341. Specifically, the delivery pipe 6 is rotatably and sealingly connected to the peripheral wall of the connecting port 341.

[0044] In one embodiment provided in this disclosure, reference is made to Figure 2 As shown, the air outlet 14 is positioned higher than the liquid outlet 15. This design allows the liquid outlet 15 to be positioned lower, enabling the liquid to drain quickly after overflowing into the first tank 1, while the air outlet 14 is positioned higher, allowing the flue gas to be discharged after driving the impeller 2 to rotate. Specifically, the liquid outlet 15 can be located on the bottom wall of the first tank 1, and the air outlet 14 can be located at the upper part of the peripheral wall of the first tank 1.

[0045] The specific implementation of this disclosure is as follows: When it is necessary to filter carbon dioxide flue gas, the carbon dioxide flue gas is introduced from the inlet 12, and enters the second tank 3 through the inlet pipe 13, the one-way valve 21, and the delivery pipe 6. After the flue gas is discharged from the delivery pipe 6, it is guided to the surrounding connecting structure by the guide surface 61, and then discharged from the nozzle 311 to drive the impeller 2 to rotate. While the impeller 2 is rotating, it drives the liquid pump 4 through the transmission component 5, and thus pumps water into the second tank 3. After entering the second tank 3, the water washes the carbon dioxide flue gas introduced into the second tank 3, carrying away the solid particles in the flue gas, and then discharges from the outlet 15 after entering the first tank 1. The filtered carbon dioxide flue gas is discharged from the outlet 14 after driving the impeller 2 to rotate. At this time, the solid particles mixed in the carbon dioxide flue gas collected from the outlet 14 are significantly reduced. Therefore, the flue gas filtration device of this disclosure can effectively filter the solid particles in the carbon dioxide flue gas, which is beneficial to the later storage and reuse of carbon dioxide. This disclosure can also be applied to the filtration of solid particles in other flue gases.

[0046] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0048] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A flue gas filtration device, characterized in that, include: A first tank body, wherein a first cavity is formed inside the first tank body, an air inlet is provided on the first tank body, an air inlet pipe is connected to the air inlet and isolated from the first cavity, and an air outlet and a liquid outlet are provided on the first tank body and connected to the first cavity. An impeller is rotatably disposed within the first tank body, and a one-way valve is disposed within the impeller, the inlet of which is connected to the air inlet pipe; The second tank has a second cavity formed inside it. The outlet of the one-way valve is connected to the second cavity. The first cavity is connected to the second cavity through a connecting structure. The connecting structure is configured to spray the gas flowing through it toward the impeller. The connecting structure is constructed as a plurality of spray holes on the second tank. The plurality of spray holes are arranged at intervals around the central axis of the impeller. The first tank is located above the second tank. The spray holes are arranged from bottom to top, gradually approaching the central axis of the impeller. A liquid pump, which is connected to the second tank via a liquid supply pipe; The transmission assembly, wherein the impeller is connected to the liquid pump via the transmission assembly; and A delivery pipe is provided, one end of which is connected to the outlet of the one-way valve and the other end of which is connected to the second cavity. The impeller is used to drive the delivery pipe to rotate. The transmission assembly is used to drive the delivery pipe and the liquid pump. The transmission assembly includes a first transmission belt, a transmission shaft and a second transmission belt. One end of the first transmission belt passes through the second tank and is sleeved on the delivery pipe, and the other end is sleeved on the transmission shaft. One end of the second transmission belt is sleeved on the transmission shaft and the other end is sleeved on the liquid pump.

2. The flue gas filtration device according to claim 1, characterized in that, The end of the delivery pipe that extends into the second cavity is provided with a guide surface, which is used to guide the gas in the second cavity to flow toward the connecting structure.

3. The flue gas filtration device according to claim 2, characterized in that, The lower end of the delivery pipe extends into the second cavity and has the guide surface, which is inclined upward along the direction from the middle to the edge of the delivery pipe to guide the gas in the second cavity to flow toward the connecting structure.

4. The flue gas filtration device according to claim 1, characterized in that, The second tank includes a recessed portion with an installation space. The conveying pipe passes through the installation space and communicates with the second cavity. The outer wall of the second tank has two first openings, and the peripheral wall of the recessed portion has two second openings. The second tank is provided with two connecting pipes. The internal space of the connecting pipes is isolated from the second cavity. Each connecting pipe is connected to one of the first openings and one of the second openings. The two opposite ends of the first transmission belt pass through the two connecting pipes respectively.

5. The flue gas filtration device according to claim 4, characterized in that, The delivery pipe is rotatably and sealingly connected to the recess.

6. The flue gas filtration device according to claim 1, characterized in that, The air outlet is configured to be higher than the liquid outlet.

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