Flue gas purification system with sludge discharge device and flue gas purification method of flue gas purification system

Abstract

The flue gas purification system comprises a dust removal tower, a flue gas discharge pipeline, a water level adjusting device and a sludge remover, the dust removal tower is of a hollow structure, the dust removal tower is vertically arranged, a flue gas discharge hole is formed in the top of the dust removal tower, a sewage discharge hole is formed in the bottom of the dust removal tower, and the sewage discharge hole is suitable for being connected with a sewage tank; a water level hole is formed in the side wall of the dust removal tower, the flue gas emission pipeline is of a tubular structure and communicates with the interior of the dust removal tower, the water level adjusting device is of a cover body structure and wraps the water level hole, the bottom of the water level adjusting device is connected with the sewage tank, and the forming height of the water level hole is larger than the height of a port, located in the dust removal tower, of the flue gas emission pipeline. The sludge remover is arranged in the dust removal tower, corresponds to the sewage discharge hole and is attached to the side wall of the dust removal tower, so that sludge on the inner wall of the sewage discharge hole of the dust removal tower is removed, and the sludge can be discharged by using a small amount of water.

Description

Technical Field

[0001] The present application relates to the technical field of sludge discharge, and in particular to a flue gas purification system with a sludge discharge device and a flue gas purification method thereof. Background Art

[0002] In the industrial dust removal sector, dust collection towers are used to discharge large amounts of sludge. Traditional dust collection towers often use hydraulic flushing to remove sludge from the tower's inner walls and drain holes. This method relies on a large amount of water flow, which not only needs to carry the sludge out but also maintain a sufficient flow rate and volume to overcome the sludge's adhesion. However, due to the lack of precise water flow control mechanisms, the flushing process often results in excessive water use, consuming a large amount of clean water resources, increasing water costs and increasing water resource pressure for enterprises. Summary of the Invention

[0003] In order to solve the problem of large water consumption of traditional mud discharge devices, the present invention provides a flue gas purification system with a mud discharge device, comprising: a dust removal tower, a flue gas discharge pipe, a water level regulating device and a sludge remover;

[0004] The dust removal tower is a hollow structure, and is vertically arranged, with a smoke exhaust hole on the top and a sewage discharge hole on the bottom. The sewage discharge hole is suitable for connecting to a sewage tank, and a water level hole is provided on the side wall of the dust removal tower;

[0005] The flue gas exhaust pipe is a tubular structure connected to the interior of the dust removal tower;

[0006] The water level regulating device is a cover structure, covering the water level hole, and the bottom of the water level regulating device is connected to the sewage tank, and the opening height of the water level hole is greater than the height of the port of the flue gas exhaust pipe located inside the dust removal tower;

[0007] The sludge remover is arranged inside the dust removal tower, corresponding to the sewage discharge hole, and the sludge remover is attached to the side wall of the dust removal tower to remove the sludge on the inner wall of the sewage discharge hole of the dust removal tower.

[0008] In a possible implementation, both ends of the sludge remover are open and attached to the bottom side wall of the dust removal tower.

[0009] In one possible implementation, the sludge remover includes: a first fixing frame, a fixing rod, a first roller, a scraper, and a driver;

[0010] The first fixing frame is an annular structure;

[0011] The fixing rod is a rod-shaped structure, one end of which is fixedly connected to the first fixing frame in the longitudinal direction. There are multiple fixing rods, which are arranged at intervals along the circumferential direction of the first fixing frame.

[0012] The first roller is rotatably disposed on the fixing rod, and the first roller is capable of rotating along the circumferential direction of the first fixing frame;

[0013] The scraper is arranged along the length direction of the fixing rod and is spaced a preset distance from the inner wall of the dust removal tower;

[0014] The output end of the driver is connected to the first fixing frame, driving the first fixing frame to rotate circumferentially around the center of a circle.

[0015] In one possible implementation, the sludge remover further includes: a mounting rod;

[0016] The mounting rod is a rod-shaped structure;

[0017] One end of the mounting rod is fixedly connected to the inner side of the first fixing frame, and the other end of the mounting rod is located at the center of the first fixing frame and is connected to the output end of the driver.

[0018] In a possible implementation, the fixing rod includes: a first fixing rod, a second fixing rod and a mounting bracket;

[0019] The first fixing rod and the second fixing rod are both rod-shaped structures, and ends of the first fixing rod and the second fixing rod are connected to the first fixing frame, and the first fixing rod and the second fixing rod are arranged in parallel;

[0020] The first fixing rod and the second fixing rod are spaced apart by a preset distance, the mounting frame is arranged between the first fixing rod and the second fixing rod, the first roller is rotatably arranged on the mounting frame, and the first roller is suitable for rotating circumferentially along the inner wall of the dust removal tower.

[0021] In a possible implementation, the sludge remover further includes: a second roller;

[0022] The first roller and the second roller are rotatably arranged at both ends of the fixed rod in the length direction, and the rotation direction of the second roller is the same as the rotation direction of the first roller.

[0023] In a possible implementation, the method further includes: a smoke exhaust duct;

[0024] The smoke exhaust pipe has an "S"-shaped pipe structure;

[0025] One end of the smoke exhaust pipe is opened as a smoke inlet, which is connected to the top of the dust removal tower, and the other end is opened as a smoke exhaust hole. The fan is arranged in the smoke exhaust hole, and the smoke inlet is located above the smoke exhaust hole.

[0026] In one possible implementation, the smoke exhaust duct includes: a first smoke exhaust duct and a second smoke exhaust duct, wherein the first smoke exhaust duct and the second smoke exhaust duct are both tubular structures with openings at both ends, and the first smoke exhaust duct is connected to the second smoke exhaust duct and is vertically arranged;

[0027] The first flue gas exhaust duct is located outside the dust removal tower and is tilted downward;

[0028] The second flue gas exhaust duct is vertically arranged inside the dust removal tower;

[0029] The port of the second flue gas exhaust pipe is close to the bottom of the dust removal tower, and the connection position between the first flue gas exhaust pipe and the second sludge exhaust pipe is chamfered.

[0030] In one possible implementation, the top and bottom of the dust removal tower are both conical structures.

[0031] A flue gas purification method, used in the above-mentioned flue gas purification system with a sludge removal device, is characterized by comprising the following steps:

[0032] The dust-containing flue gas passes through the flue gas discharge pipe and is discharged into the dust removal tower to complete the separation of dust and flue gas;

[0033] The water level regulating device regulates the water level in the dust removal tower;

[0034] The sludge remover processes the inner wall of the dust removal tower;

[0035] The dust removal tower discharges sludge mixed with dust and water.

[0036] The flue gas purification system with a sludge discharge device and the flue gas purification method of the embodiment of the present application have the following beneficial effects: through effective gas-water separation and sludge discharge, the waste of water resources is reduced, and by eliminating the use of conventional spraying devices, sludge discharge and gas-water separation are completed without using a large amount of water to flush the inner wall of the dust removal tower. Specifically, the sludge and water are discharged from the flue gas discharge pipe into the interior of the dust removal tower, and the port where the flue gas discharge pipe enters the gas-water separation pipe is between the sewage hole and the water level hole, so that when the sludge is discharged into the interior of the dust removal tower along with the water, the water can cover the port of the flue gas discharge pipe and will not exceed the opening position of the water level hole. The sludge will be prevented from adhering to the side wall by the sludge remover provided at the bottom of the dust removal tower, and there is no need to use a large amount of water to flush the sludge on the inner wall of the dust removal tower, and the sludge discharge can be completed using a small amount of water.

[0037] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

[0039] Figure 1 A schematic diagram showing the main structure of a flue gas purification system with a mud discharge device according to an embodiment of the present application is shown;

[0040] Figure 2 A schematic top view of a sludge processor according to an embodiment of the present application is shown;

[0041] Figure 3 A schematic diagram showing the main structure of a sludge processor according to an embodiment of the present application is shown;

[0042] Figure 4 A partially enlarged schematic diagram of a water level regulating device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0043] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0044] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0046] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0047] In addition, numerous specific details are provided in the detailed description below to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0048] Figure 1 A schematic diagram showing the main structure according to an embodiment of the present application is shown. Figure 1 As shown, the flue gas purification system with a mud discharge device in an embodiment of the present application includes: a dust removal tower 10, a flue gas exhaust pipe 30, a water level regulating device 60 and a sludge remover 20. The dust removal tower 10 is a hollow structure, and the dust removal tower 10 is vertically arranged, with a smoke exhaust hole on the top and a sewage discharge hole on the bottom. The sewage discharge hole is suitable for connecting to a sewage tank 50, and a water level hole is opened on the side wall of the dust removal tower 10. The flue gas exhaust pipe 30 is a tubular structure, connected to the interior of the dust removal tower 10, the water level regulating device 60 is a cover structure, covering the water level hole, and the bottom of the water level regulating device 60 is connected to the sewage tank 50, and the opening height of the water level hole is greater than the port height of the flue gas exhaust pipe 30 located inside the dust removal tower 10. The sludge remover 20 is arranged inside the dust removal tower 10, corresponding to the sewage discharge hole, and the sludge remover 20 is attached to the side wall of the dust removal tower 10 to remove the sludge on the inner wall of the sewage discharge hole of the dust removal tower 10.

[0049] In this specific embodiment, through effective gas-water separation and sludge discharge, the waste of water resources is reduced. By eliminating the use of conventional spraying devices, sludge discharge and gas-water separation are completed without using a large amount of water to flush the inner wall of the dust removal tower 10. Specifically, sludge and water are discharged from the flue gas discharge pipe 30 into the interior of the dust removal tower 10, and the port where the flue gas discharge pipe 30 enters the gas-water separation pipe is between the sewage discharge hole and the water level hole. When the sludge is discharged into the interior of the dust removal tower 10 along with the water, the water can cover the port of the flue gas discharge pipe 30 and will not exceed the opening position of the water level hole. The sludge will pass through the sludge remover 20 provided at the bottom of the dust removal tower 10 to avoid adhesion to the side wall, thereby completing the sludge discharge using a small amount of water.

[0050] In one embodiment, the flue gas discharge duct 30 is L-shaped and connects to the internal port of the dust removal tower 10, located between the water level hole and the sewage discharge hole. The L-shaped sludge discharge pipe can discharge water and sludge to the bottom of the water vapor separation duct, facilitating sludge discharge.

[0051] In this embodiment, the end of the flue gas discharge pipe 30 located inside the dust removal tower 10 is a discharge hole. The discharge hole is directly opposite the dust removal tower 10's sewage discharge hole and is located between the water level hole and the sewage discharge hole. This allows water to cover the discharge hole end of the flue gas discharge pipe 30, preventing siphoning. A small amount of water can complete the water seal of the discharge hole, eliminating the need to constantly spray the interior of the dust removal tower 10.

[0052] In a specific embodiment, the sludge remover 20 is open at both ends and is attached to the bottom sidewall of the dust removal tower 10 to remove sludge from the inner wall of the sewage discharge hole of the dust removal tower 10 to prevent the sewage discharge hole from being clogged. Specifically, the sludge remover 20 is used to scrape sludge from the bottom sidewall of the dust removal tower 10 to prevent the sewage discharge hole of the dust removal tower 10 from being clogged by hard sludge.

[0053] In this embodiment, by scraping the sidewalls of the dust removal tower 10 using the sludge remover 20, it is possible to remove the sludge from the drain hole without using a large amount of water. Thus, when using the sludge remover 20, a small amount of water can be used to complete the discharge of the sludge from the dust removal tower 10.

[0054] In a specific embodiment, the bottom of the dust removal tower 10 is a conical structure, and the cross-sectional area gradually decreases in a direction away from the dust removal tower 10 and then begins to have a sewage discharge hole.

[0055] In a specific embodiment, the sludge remover 20 includes: a first fixed frame 231, a fixed rod 210, a first roller 241, a scraper and a driver 250. The first fixed frame 231 is an annular structure, the fixed rod 210 is a rod-shaped structure, and one end in the length direction is fixedly connected to the first fixed frame 231. There are multiple fixed rods 210, which are arranged at intervals along the circumferential direction of the first fixed frame 231. The first roller 241 is rotatably arranged on the fixed rod 210, and the first roller 241 can rotate along the circumferential direction of the first fixed frame 231. The scraper is arranged along the length direction of the fixed rod 210 and is spaced a preset distance from the inner wall of the dust removal tower 10. The output end of the driver 250 is connected to the first fixed frame 231, driving the first fixed frame 231 to rotate circumferentially around the center of the circle.

[0056] In this specific embodiment, the first fixed frame 231 is driven to rotate circumferentially by the driver 250, so that the scraper can continuously scrape the sludge on the inner wall of the dust removal tower 10. Specifically, the first fixed frame 231 is designed as an annular structure, which can evenly distribute the driving force and ensure the stability of the device during rotation. A plurality of fixed rods 210 are provided, which are spaced apart along the circumferential direction of the first fixed frame 231 so that the fixed rods 210 can evenly support and connect the first fixed frame 231. The setting of the first roller 241 can reduce the friction between the fixed rod 210 and the dust removal tower 10, making the device rotate more smoothly. The scraper is arranged along the length direction of the fixed rod 210 and is spaced apart from the inner wall of the dust removal tower 10 by a preset distance. When the device rotates, the scraper can effectively scrape the accumulated sludge on the inner wall of the pipe. The output end of the driver 250 is connected to the first fixed frame 231, which can drive the first fixed frame 231 to rotate circumferentially around the center of the circle, thereby driving the entire remover to work. In addition, by setting a preset distance between the scraper and the inner wall of the dust removal tower 10, the scraper can be prevented from directly contacting the inner wall of the dust removal tower 10, thereby avoiding wear and tear of the dust removal tower 10.

[0057] The first fixing frame 231 is an annular structure that can be stably placed on the conical bottom of the dust removal tower 10. The fixing rod 210 is an elongated rod-shaped structure, one end of which is welded to the annular first fixing frame 231 and the other end is at a preset angle to the first fixing frame 231, forming a match with the conical bottom of the dust removal tower 10. Multiple fixing rods 210 are arranged at intervals along the circumference of the first fixing frame 231, and each fixing rod 210 is provided with a scraper to scrape silt from the bottom wall of the dust removal tower 10. In addition, by providing a first roller 241 on each fixing rod 210, the first roller 241 rolls tangentially to the bottom wall of the dust removal tower 10 and rotates around the circumference of the first fixing frame 231, thereby preventing the fixing rod 210 from contacting the inner wall of the dust removal tower 10. The driver 250 is connected to the first fixing frame 231 , driving the first fixing frame 231 to rotate circumferentially, driving the fixing rod 210 and the scraper provided on the fixing rod 210 to rotate, and scraping off the silt on the dust removal tower 10 .

[0058] In a specific embodiment, the sludge remover 20 further includes a mounting rod 220, which is a rod-shaped structure. One end of the mounting rod 220 is fixedly connected to the inner side of the first fixing frame 231, and the other end of the mounting rod 220 is located at the center of the first fixing frame 231 and is connected to the output end of the driver 250. Specifically, the mounting rod 220 serves as a connecting component between the driver 250 and the first fixing frame 231, ensuring stable transmission of driving force, enabling the first fixing frame 231 to rotate more smoothly, and driving the scraper on the fixing rod 210 to remove sludge from the inner wall of the dust removal tower 10.

[0059] In one specific embodiment, there are three mounting rods 220, spaced apart along the circumference of first mounting frame 231 to form a stable triangular structure. One end of each mounting rod 220 is welded to the inner side of first mounting frame 231, while the other end is connected to the ends of two other mounting rods 220 and to the output of driver 250 to drive rotation of first mounting frame 231. The arrangement of three mounting rods 220 enhances the connection strength and stability between driver 250 and first mounting frame 231, ensuring good balance during high-speed rotation, reducing vibration and noise, and extending the service life of the device.

[0060] In a specific embodiment, the fixing rod 210 is a rod-shaped structure, one end of which is fixedly connected to the first fixing frame 231, and the other end of which is freely extendable and can form a certain angle with the annular first fixing frame 231. The fixing rod 210 includes: a first fixing rod 211, a second fixing rod 213, and a mounting frame 212. The first fixing rod 211 and the second fixing rod 213 are both rod-shaped structures, and the ends of the first fixing rod 211 and the second fixing rod 213 are connected to the first fixing frame 231 and are arranged in parallel. The first fixing rod 211 and the second fixing rod 213 are separated by a preset distance. The mounting frame 212 is arranged between the first fixing rod 211 and the second fixing rod 213. The first roller 241 is rotatably arranged on the mounting frame 212, and the rotation plane of the first roller 241 is perpendicular to the length direction of the first fixing rod 211.

[0061] The first and second fixing rods 211 and 213 have the same structure and are separated by a predetermined distance. A mounting bracket 212 is provided on the first and second fixing rods 211 and 213 for mounting the first roller 241. The mounting bracket 212 is positioned adjacent to the first fixing bracket 231 and rotates tangentially to the bottom inner wall of the dust removal tower 10.

[0062] In one specific embodiment, the sludge remover 20 further includes a second roller 242. The first roller 241 and the second roller 242 are rotatably disposed at either end of the fixed rod 210 along its length, with the second roller 242 rotating in the same direction as the first roller 241. The second roller 242 has the same structure as the first roller 241 and, in conjunction with the mounting bracket 212, is disposed at either end of the fixed rod 210 along its length. This allows the length of the fixed rod 210 to be parallel to the bottom inner wall of the dust removal tower 10, with a predetermined distance between the scrapers. The placement of the first roller 241 and the second roller 242 at either end of the fixed rod 210 creates a multi-point support structure, reducing deformation and shaking of the fixed rod 210 during rotation, enabling smoother operation and improving sludge removal efficiency. The placement of the second roller 242 further reduces friction between the sludge remover 20 and the inner wall of the dust removal tower 10 during operation, thereby improving the efficiency of the sludge remover 20.

[0063] In one specific embodiment, the length of the fixed rods 210 is tilted relative to the straight line containing the center of the first fixed frame 231, so that the axial length of the fixed rods 210 is spaced a predetermined distance from the plane of the annular first fixed frame 231. Specifically, the three fixed rods 210 form a conical structure with the first fixed frame 231, and the ends of the three fixed rods 210 facing away from the first fixed frame 231 are non-contacting, forming a through-hole structure corresponding to the drainage hole. In this way, the conical sludge remover 20 corresponds to the bottom of the dust removal tower 10, where the drainage hole is provided, and the angle between the fixed rods 210 and the first fixed frame 231 matches the angle of the bottom of the dust removal tower 10.

[0064] In this way, the conical structure formed by the fixed rod 210 and the first fixed frame 231, as well as the spacing angle between the fixed rod 210 and the first fixed frame 231, matches the angle of the bottom of the dust removal tower 10, and can better fit the shape of the bottom of the dust removal tower 10. This allows the sludge remover 20 to remove the sludge at the bottom of the dust removal tower 10, and the scraper and other components can be in closer contact with the bottom inner wall, thereby improving the sludge removal effect and reducing the possibility of sludge residue. The through-hole structure formed at one end of the three fixed rods 210 away from the first fixed frame 231 corresponds to the sewage hole, providing a centralized and smooth discharge channel for the sludge. When the sludge remover 20 is working, the scraped sludge can flow directly to the sewage hole through this through-hole, avoiding the accumulation and blockage of sludge at the bottom and improving the efficiency of sludge discharge.

[0065] In one specific embodiment, the sludge remover 20 further includes a second fixing bracket 232. The second fixing bracket 232 is an annular structure and is welded to each of the three fixing rods 210. The second fixing bracket 232 is positioned parallel to the plane of the second fixing bracket 232. Positioning the second fixing bracket 232 on the end of the fixing rod 210 away from the first fixing bracket 231 provides a more secure and stable installation of the three fixing rods 210. The second fixing bracket 232 strengthens the connection between the three fixing rods 210. Since the second fixing bracket 232 is welded to the three fixing rods 210 and positioned parallel to the first fixing bracket 231, it provides support and reinforcement at the end of the fixing rod 210 away from the first fixing bracket 231. This makes the entire sludge remover 20 more stable, better able to withstand external forces during operation, reduces the risk of component loosening and damage, and extends the service life of the device. This more secure and stable structure ensures the reliability of the sludge remover 20 during operation. When the driver 250 drives the first fixed frame 231 to rotate, the fixed rod 210 can follow the rotation more stably, ensuring that the scraper and other components can accurately scrape off the silt, improving the continuity and stability of the silt removal work, and reducing work failures caused by structural instability.

[0066] In a specific embodiment, the driver 250 is arranged outside the dust removal tower 10, and the output end enters the interior of the dust removal tower 10 through a cable, and is connected to the ends of the three mounting rods 220 away from the first fixing frame 231, and drives the mounting rods 220, the first fixing frame 231, the fixing rods 210 and the scraper to rotate in turn.

[0067] In a specific embodiment, the system further includes a smoke exhaust duct having an S-shaped tubular structure, one end of which is open as a smoke inlet connected to the top of the dust removal tower 10, and the other end of which is open as a smoke exhaust. A fan 11 is provided within the smoke exhaust, and the smoke inlet is located above the smoke exhaust. The fan 11 is provided within the smoke exhaust, and the smoke inlet is located above the smoke exhaust. The fan 11 can provide power to accelerate the exhaust of smoke, thereby ensuring ventilation of the entire dust collector and improving work efficiency.

[0068] In a specific embodiment, the flue gas exhaust duct 30 includes: a first flue gas exhaust duct 30 and a second flue gas exhaust duct 30. The first flue gas exhaust duct 30 and the second flue gas exhaust duct 30 are both tubular structures with openings at both ends, and the first flue gas exhaust duct 30 is connected to the second flue gas exhaust duct 30 and is vertically arranged. The first flue gas exhaust duct 30 is located outside the dust removal tower 10 and is inclined downward. The second flue gas exhaust duct 30 is located inside the dust removal tower 10 and is vertically arranged. The port of the second flue gas exhaust duct 30 is close to the bottom of the dust removal tower 10, and the connection position between the first flue gas exhaust duct 30 and the second sludge discharge is chamfered. The chamfering of the connection position reduces the accumulation of sludge at this position, reduces resistance, and ensures the smoothness of sludge discharge.

[0069] Among them, the "L"-shaped sludge pipe structure allows the sludge containing dust gas to enter the dust removal tower 10 from the horizontal direction and then flow vertically downward, so that the sludge reaches the bottom position of the dust removal tower 10 directly through the sludge pipe.

[0070] In a specific embodiment, the top and bottom of the dust removal tower 10 are both tapered, which helps to direct the purified flue gas to the exhaust port, making the exhaust more smooth and reducing the diffusion and retention of flue gas at the top. The tapered structure at the bottom facilitates the collection of sludge to the exhaust port, facilitating its discharge and improving the efficiency of sludge treatment.

[0071] This specific embodiment further includes a pipe settling box 40. The pipe settling box 40 has a conical structure and is disposed below the flue gas emission duct 30. The larger end of the pipe settling box 40 is connected to the bottom of the flue gas emission duct 30 outside the dust removal tower 10, and the smaller end is connected to the sewage tank 50. The conical structure of the pipe settling box 40 allows heavier impurities such as dust to settle into the pipe settling box 40 under the action of gravity during the transportation of dust-laden flue gas. This reduces the amount of dust discharged with the dust-laden flue gas exhaust equipment, improves the quality of sludge discharge, and facilitates the subsequent treatment of settled impurities. Specifically, the flue gas emission duct 30 is a horizontally arranged tubular structure located outside the dust removal tower 10. The pipe settling box 40 has an open top and is connected to the bottom of the flue gas emission duct 30. This allows dust to settle into the pipe settling box 40 under the action of gravity, reducing the dust treatment required by the dust removal tower 10. The bottom of the pipe settling box 40 is provided with a through hole for discharging collected dust.

[0072] This embodiment further includes a partition plate, which is a plate-like structure and is disposed within the pipe settling box 40. The partition plate is disposed on the inner wall of the pipe settling box 40 and is disposed perpendicular to the inner wall of the pipe settling box 40. The partition plate divides the interior space of the pipe settling box 40, increases the sedimentation path of impurities such as dust within the pipe settling box 40, and prolongs the sedimentation time of the impurities, allowing the impurities to settle more fully.

[0073] In a specific embodiment, it further includes: a sewage tank 50, which is a hollow box structure. The pipeline sedimentation box 40, the water level regulating device 60 and the sewage hole are all connected to the sewage tank 50 to collect sewage, dust and sludge.

[0074] This specific embodiment further includes a partition plate 50; the partition plate 50 is a plate-like structure, arranged obliquely within the sewage tank 50, separating the sewage tank 50 into a first cavity and a second cavity. The cross-sectional diameter of the first cavity at least gradually increases from the bottom vertically, while the cross-sectional diameter of the second cavity at least gradually decreases from the bottom vertically. The sedimentation pipe is connected to the top of the second cavity, the bottom of the dust removal tower 10 is connected to the bottom of the second cavity, and the water level regulating device 60 is connected to the top of the first cavity. Specifically, the partition plate 50 is arranged at the bottom of the sewage tank 50, extending obliquely, and does not contact the top of the sewage tank 50. Instead, the two sides are sealed to the side walls of the sewage tank 50, thereby forming two cavities.

[0075] In this specific embodiment, the partition plate 50 divides the sewage tank 50 into two chambers with different structures. The varying cross-sectional diameter of the first chamber facilitates the stable storage and flow of sewage within the chamber. The varying cross-sectional diameter of the second chamber allows for better separation of sewage and precipitated impurities entering the second chamber, allowing the precipitated impurities to settle more smoothly to the bottom of the second chamber, while the sewage is connected to the first chamber for further processing. This structural design improves the sewage tank 50's ability to process sewage and impurities, optimizing the overall system flow.

[0076] In one specific embodiment, the water level regulating device 60 is an annular structure with a hollow interior, which is sleeved on the outside of the dust removal tower 10. The inner side of the water level regulating device 60 is an open structure corresponding to the water level hole. The inner diameter of the water level regulating device 60 is slightly larger than the outer diameter of the dust removal tower 10, and can be tightly sleeved and welded on the outside of the dust removal tower 10. The inner side of the water level regulating device 60 is an open structure, and the opening corresponds to the water level hole on the dust removal tower 10, allowing water in the dust removal tower 10 to enter the water level regulating device 60 through the water level hole. In this way, the water level hole can be continuously opened along the circumferential direction of the dust removal tower 10, and the dust removal towers 10 located above and below the water level hole can also be connected together.

[0077] In this specific embodiment, since the pipeline sedimentation box 40 can precipitate part of the dust in the flue gas, some unprecipitated dust-containing flue gas will re-enter the cavity of the dust removal tower 10, so the separation of flue gas and dust in the dust-containing flue gas can be completed without a large amount of water.

[0078] A flue gas purification method, used in a flue gas purification system with a sludge removal device, comprises the following steps:

[0079] S100, the flue gas containing dust passes through the flue gas exhaust pipe and is discharged into the dust removal tower to complete the separation of dust and flue gas;

[0080] In this specific step, dust-laden flue gas is transported via a flue gas exhaust duct into a dust removal tower. Inside the tower, dust and flue gas are separated by utilizing principles such as the rotational motion of the air-water mixture or gravity. Specifically, the flue gas exhaust duct introduces flue gas into the tower at a specific flow rate and angle, creating a cyclonic flow within the chamber. Dust particles, pulled by centrifugal force and gravity, gather on the chamber walls, separating them from the flue gas.

[0081] S200, the water level regulating device regulates the water level in the dust removal tower;

[0082] In this specific step, after the fan connected to the top of the dust removal tower is started, a negative pressure environment is formed in the chamber, and the separated clean flue gas is discharged from the system through the exhaust pipe. The pressure in the dust removal tower is then adjusted by the water level regulating device to avoid the occurrence of siphoning.

[0083] S300, the sludge remover processes the inner wall of the dust removal tower;

[0084] During this specific step, as dust separates from flue gas, some dust will adhere to the inner walls of the dust removal tower. A sludge remover regularly or in real time cleans the chamber walls to prevent dust from forming a sludge layer that affects the gas-water separation process.

[0085] S400, the dust removal tower discharges sludge mixed with dust and water;

[0086] In this specific step, a mud discharge port is provided at the bottom of the dust removal tower, and the sludge formed by the mixture of the separated dust and water is discharged from the chamber through the mud discharge port.

[0087] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A flue gas purification system with a sludge discharge device, characterized in that: include: Dust removal towers, flue gas exhaust ducts, water level regulating devices and sludge removal devices; The dust removal tower is a hollow structure, and the gas and moisture chamber channel is vertically arranged, a smoke exhaust hole is opened on the top, and a sewage discharge hole is opened at the bottom. The sewage discharge hole is suitable for connecting to a sewage tank, and a water level hole is opened on the side wall of the dust removal tower; The flue gas exhaust pipe is a tubular structure connected to the interior of the dust removal tower; The water level regulating device is a cover structure, covering the water level hole, and the bottom of the water level regulating device is connected to the sewage tank, and the opening height of the water level hole is greater than the height of the port of the flue gas exhaust pipe located inside the dust removal tower; The sludge remover is arranged inside the dust removal tower, corresponding to the sewage discharge hole, and the sludge remover is attached to the side wall of the dust removal tower and is suitable for removing sludge on the inner wall of the sewage discharge hole of the dust removal tower.

2. The flue gas purification system with a mud discharge device according to claim 1, characterized in that: The sludge remover has openings at both ends and is attached to the bottom side wall of the dust removal tower.

3. The flue gas purification system with a sludge removal device according to claim 2, characterized in that: The sludge remover comprises: a first fixing frame, a fixing rod, a first roller, a scraper and a driver; The first fixing frame is an annular structure; The fixing rod is a rod-shaped structure, one end of which is fixedly connected to the first fixing frame in the longitudinal direction, and the other end of which extends toward the drain hole; there are multiple fixing rods, which are arranged at intervals along the circumferential direction of the first fixing frame; The first roller is rotatably disposed on the fixing rod, and the first roller is capable of rotating along the circumferential direction of the first fixing frame; The scraper is arranged along the length direction of the fixing rod and is spaced a preset distance from the inner wall of the dust removal tower; The output end of the driver is connected to the first fixing frame, driving the first fixing frame to rotate circumferentially around the center of a circle.

4. The flue gas purification system with a mud discharge device according to claim 3, characterized in that: The sludge remover further includes: a mounting rod; The mounting rod is a rod-shaped structure; One end of the mounting rod is fixedly connected to the inner side of the first fixing frame, and the other end of the mounting rod is located at the center of the first fixing frame and is connected to the output end of the driver.

5. The flue gas purification system with a sludge removal device according to claim 3, characterized in that: The fixing rod comprises: a first fixing rod, a second fixing rod and a mounting bracket; The first fixing rod and the second fixing rod are both rod-shaped structures, and ends of the first fixing rod and the second fixing rod are connected to the first fixing frame, and the first fixing rod and the second fixing rod are arranged in parallel; The first fixing rod and the second fixing rod are spaced apart by a preset distance, the mounting frame is arranged between the first fixing rod and the second fixing rod, the first roller is rotatably arranged on the mounting frame, and the first roller is suitable for rotating circumferentially along the inner wall of the dust removal tower.

6. The flue gas purification system with a sludge removal device according to claim 5, characterized in that: The sludge remover further includes: a second roller, the second roller having the same structure as the first roller; The first roller and the second roller are rotatably arranged at both ends of the fixed rod in the length direction, and the rotation direction of the second roller is the same as the rotation direction of the first roller.

7. The flue gas purification system with a sludge removal device according to any one of claims 1 to 6, characterized in that: Also includes: exhaust ducts; The smoke exhaust pipe has an "S"-shaped pipe structure; One end of the smoke exhaust pipe is opened as a smoke inlet, which is connected to the top of the dust removal tower, and the other end is opened as a smoke exhaust hole. The fan is arranged in the smoke exhaust hole, and the smoke inlet is located above the smoke exhaust hole.

8. The flue gas purification system with a sludge removal device according to claim 2, characterized in that: The smoke exhaust pipe includes: a first smoke exhaust pipe and a second smoke exhaust pipe, the first smoke exhaust pipe and the second smoke exhaust pipe are both tubular structures with openings at both ends, and the first smoke exhaust pipe is connected to the second smoke exhaust pipe and is vertically arranged; The first flue gas exhaust duct is located outside the dust removal tower and is tilted downward; The second flue gas exhaust duct is vertically arranged inside the dust removal tower; The port of the second flue gas exhaust pipe is close to the bottom of the dust removal tower, and the connection position between the first flue gas exhaust pipe and the second sludge exhaust pipe is chamfered.

9. The flue gas purification system with a sludge removal device according to claim 1, characterized in that: The top and bottom of the dust removal tower are both conical structures.

10. A flue gas purification method, used in the flue gas purification system with a sludge discharge device according to any one of claims 1 to 9, characterized in that: The steps include: The dust-containing flue gas and water are discharged into the dust removal tower through the flue gas discharge pipe, completing the separation of dust and flue gas; The water level regulating device regulates the water level in the dust removal tower; The sludge remover processes the inner wall of the dust removal tower; The dust removal tower discharges sludge mixed with dust and water.

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