A boiler flue gas abatement system

Abstract

The application relates to a boiler smoke dust emission reduction system and belongs to the technical field of boilers, which comprises a base, a spray tower fixedly installed at the top of the base, a filter box fixedly installed at the top of the base and located at one side of the spray tower, a conveying pipe fixedly connected to the bottom of the spray tower, and connecting pipelines fixedly connected to the two sides of the filter box. The application has the beneficial effect that the arc-shaped plate part where the filter plate to be maintained is located can be rotated to the access door through the rotation of the rotating shaft, the filter plate can be quickly disassembled for maintenance by utilizing the characteristics of the magnetic suction type interface, the sealing gasket on the adjacent arc-shaped plate part can block the air outlet in the connecting pipeline, the normal work of other filter plates is ensured, the replacement time of the filter plate is reduced through the above mode, the purpose of maintaining while operating is achieved, the shutdown of the whole device caused by filter plate maintenance is avoided, the continuous and stable operation of the boiler is effectively ensured, and the influence on the industrial production progress is reduced.

Description

Technical Field

[0001] This application relates to the field of boiler technology, and in particular to a boiler flue gas emission reduction system. Background Technology

[0002] Circulating fluidized bed boilers occupy an important position in industrial heating and power generation due to their unique combustion method. By fully mixing and burning fuel with a large amount of bed material in a fluidized state, they achieve extremely high combustion efficiency and can effectively burn a variety of fuels, including low-quality coal and industrial waste, greatly expanding the scope of energy utilization and reducing fuel costs for enterprises. At the same time, desulfurizing agents can be directly added to circulating fluidized bed boilers during combustion, which reduces nitrogen oxide generation and achieves in-furnace desulfurization, thus exhibiting good preliminary environmental protection performance.

[0003] A search revealed a Chinese patent disclosure for an emission reduction device for an energy-saving boiler (authorization announcement number CN220633478U). The device includes an energy-saving boiler with a treatment box mounted on its top side. Filter plates a, b, and c are fixed to the inner wall of the treatment box at equal intervals. An output end of an electric telescopic rod is connected to a cleaning component for cleaning filter plates a, b, and c. A limiting component at the bottom of the treatment box allows for quick assembly and disassembly. This patented technology allows for simultaneous cleaning of impurities adhering to the sides of filter plates a, b, and c using the cleaning component, eliminating the need for manual removal of the filter components. This convenient cleaning method effectively improves cleaning efficiency and reduces worker workload. Furthermore, the limiting component allows for easy assembly and disassembly of the treatment box from the top of the energy-saving boiler, facilitating subsequent maintenance of the treatment box's interior.

[0004] However, the above-mentioned devices still have some drawbacks in actual use. The most obvious one is that when the filter plates in the boiler emission reduction device are damaged or need to be maintained later, due to the lack of an effective isolation structure, the entire device needs to be shut down. This will not only interrupt the normal operation of the boiler and affect the progress of industrial production, but also increase the additional energy consumption and equipment wear and tear costs caused by frequent start-ups and shutdowns. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main objective of this application is to provide a boiler flue dust reduction system.

[0006] The technical solution of this application is as follows: a boiler flue gas emission reduction system includes a base, a spray tower fixedly installed on the top of the base, a filter box fixedly installed on the top of the base and on one side of the spray tower, a conveying pipe fixedly connected to the bottom of the spray tower, connecting pipes fixedly connected to both sides of the filter box, the end of the connecting pipe away from the filter box being connected to the conveying pipe, a rotating shaft rotatably installed on the inner wall of the filter box, a plurality of fixing parts fixedly connected to the outer periphery of the rotating shaft, an arc-shaped plate fixedly connected to the end of each fixing part away from the rotating shaft, wherein two of the arc-shaped plates are provided with magnetic suction interfaces inside, and sealing gaskets are fixedly connected to the outer walls of the other two arc-shaped plates, the sealing gaskets and the magnetic suction interfaces being arranged adjacent to each other.

[0007] By adopting the above technical solution, the arc-shaped plate containing the filter plate to be maintained can be rotated to the maintenance door by rotating the shaft. The filter plate can be quickly disassembled for maintenance by utilizing the characteristics of the magnetic interface. At the same time, the sealing gaskets on the adjacent arc-shaped plates will block the air outlet in the connecting pipe, ensuring the normal operation of other filter plates.

[0008] In a preferred embodiment, each of the connecting pipes is equipped with a manual valve at its top, each of the magnetic interfaces is provided with a filter plate, each of the sealing gaskets is in contact with the inner wall of the filter box, and each of the arc-shaped plates is fitted to the inner wall of the filter box.

[0009] By adopting the above technical solution and setting the filter plate, fine filtration can be achieved, effectively intercepting fine particulate matter.

[0010] In a preferred embodiment, a cyclone separator is fixedly installed on the top of the base and on one side of the spray tower. A flue gas inlet pipe is fixedly connected to the top of the cyclone separator, and a boiler exhaust port is provided at the end of the flue gas inlet pipe away from the cyclone separator.

[0011] By adopting the above technical solution and setting up a cyclone separator, larger dust particles can be separated using centrifugal force.

[0012] In a preferred embodiment, the output end of the cyclone separator extends into the interior of the spray tower and is located directly above the spray tower, and both sides of the filter box are hinged with maintenance doors.

[0013] By adopting the above technical solution and installing inspection doors, the daily inspection and maintenance of equipment can be facilitated.

[0014] In a preferred embodiment, a connecting flange is provided between the flue gas inlet pipe and the boiler exhaust port, and the flue gas inlet pipe and the boiler exhaust port are connected by the connecting flange.

[0015] By adopting the above technical solution, the flue gas inlet pipe can be connected to the boiler exhaust port on the boiler.

[0016] In a preferred embodiment, a drive motor is fixedly installed at the bottom of the filter box, and the output shaft of the drive motor extends into the interior of the filter box and is fixedly connected to the rotating shaft of the rotating shaft.

[0017] By adopting the above technical solution, the rotation of the output shaft of the drive motor can drive the rotating shaft to rotate.

[0018] In a preferred embodiment, a blower is fixedly installed on the top of the filter box, an exhaust port is provided above the filter box, the blower is located above the exhaust port, and a discharge pipe is fixedly connected to one end of the blower.

[0019] By adopting the above technical solution, and through the coordination of the discharge pipe, exhaust port, and blower, the purified gas can be smoothly discharged, ensuring the smooth operation of the system.

[0020] Compared with the prior art, the advantages and positive effects of this application are as follows: 1. In this application, when a filter plate needs maintenance or replacement, there is no need to stop the machine. Simply close the manual valve on the corresponding connecting pipe and open another manual valve. At this time, by rotating the shaft, the arc-shaped plate containing the filter plate to be maintained can be rotated to the maintenance door. The filter plate can be quickly disassembled for maintenance using the characteristics of the magnetic interface. At the same time, the sealing gaskets on the adjacent arc-shaped plates will block the air outlet in the connecting pipe, ensuring the normal operation of other filter plates. The above method reduces the filter plate replacement time and achieves the purpose of maintenance while operating, avoiding the shutdown of the entire device due to filter plate maintenance, effectively ensuring the continuous and stable operation of the boiler, and reducing the impact on industrial production progress.

[0021] 2. In this application, the flue gas enters the cyclone separator through the flue gas inlet pipe, where centrifugal force is used to separate larger flue gas particles, initially reducing the flue gas concentration so that large flue gas particles fall to the bottom, while fine flue gas particles enter the spray tower. Through liquid spraying in the spray tower, the remaining dust, sulfides and other pollutants are further removed. Compared with traditional single dust removal equipment, this greatly improves the overall dust removal efficiency. Attached Figure Description

[0022] Figure 1 This application provides an overall perspective view of a boiler flue gas emission reduction system; Figure 2 This application provides a schematic diagram of the internal structure of a filter box in a boiler flue gas emission reduction system; Figure 3 This application provides a schematic diagram of a magnetic interface and filter plate structure for a boiler flue gas emission reduction system; Figure 4 This application provides a cross-sectional view of the filter box of a boiler flue dust reduction system.

[0023] Legend: 1. Base; 2. Cyclone separator; 3. Spray tower; 4. Filter box; 5. Connecting pipe; 6. Manual valve; 7. Inspection door; 8. Blower; 9. Discharge pipe; 10. Drive motor; 11. Arc-shaped plate; 12. Filter plate; 13. Sealing gasket; 14. Fixture; 15. Rotating shaft; 16. Magnetic interface; 17. Exhaust port; 18. Smoke and dust inlet pipe; 19. Conveying pipe; 20. Boiler exhaust port. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] Reference Figure 1-4 A boiler flue gas emission reduction system includes a base 1, a spray tower 3 fixedly installed on the top of the base 1, a filter box 4 fixedly installed on the top of the base 1 and on one side of the spray tower 3, a conveying pipe 19 fixedly connected to the bottom of the spray tower 3, connecting pipes 5 fixedly connected to both sides of the filter box 4, and the ends of the connecting pipes 5 away from the filter box 4 connected to the conveying pipes 19. A rotating shaft 15 is rotatably installed on the inner wall of the filter box 4, and several fixing parts 14 are fixedly connected to the outer periphery of the rotating shaft 15. An arc-shaped plate 11 is fixedly connected to the end of each fixing part 14 away from the rotating shaft 15. Two of the arc-shaped plates 11 have magnetic interfaces 16 inside, and sealing gaskets 13 are fixedly connected to the outer walls of the other two arc-shaped plates 11. The sealing gaskets 13 and the magnetic interfaces 16 are arranged adjacent to each other. When a filter plate 12 needs maintenance or replacement, there is no need to stop the machine. Simply close the manual valve 6 on the corresponding connecting pipe 5 and open another manual valve 6. At this time, by rotating the shaft 15, the arc-shaped plate 11 where the filter plate 12 to be maintained is located can be rotated to the inspection door 7. The filter plate 12 can be quickly disassembled for maintenance using the characteristics of the magnetic interface 16. At the same time, the sealing gasket 13 on the adjacent arc-shaped plate 11 will block the air outlet in the connecting pipe 5, ensuring that other filter plates 12 can work normally. In this way, the replacement time of the filter plate 12 is reduced, and the purpose of maintenance and operation is achieved simultaneously. This avoids the shutdown of the entire device due to the maintenance of the filter plate 12, effectively ensuring the continuous and stable operation of the boiler and reducing the impact on the progress of industrial production.

[0026] Specifically, manual valves 6 are installed at the top of the connecting pipes 5, filter plates 12 are installed at the magnetic interface 16, sealing gaskets 13 are in contact with the inner wall of the filter box 4, and arc-shaped plates 11 are in contact with the inner wall of the filter box 4. A cyclone separator 2 is fixedly installed on the top of the base 1 and on one side of the spray tower 3. The cyclone separator 2 can separate larger dust particles by using centrifugal force. A dust inlet pipe 18 is fixedly connected to the top of the cyclone separator 2. A boiler exhaust port 20 is provided at the end of the dust inlet pipe 18 away from the cyclone separator 2. The output end of the cyclone separator 2 extends into the interior of the spray tower 3 and is located directly above the spray tower 3. Inspection doors 7 are hinged on both sides of the filter box 4.

[0027] Specifically, a connecting flange is provided between the dust inlet pipe 18 and the boiler exhaust port 20 to connect the dust inlet pipe 18 to the boiler exhaust port 20 on the boiler. The dust inlet pipe 18 and the boiler exhaust port 20 are connected by the connecting flange. A drive motor 10 is fixedly installed at the bottom of the filter box 4. Through the cooperation of the discharge pipe 9, the exhaust port 17, and the blower 8, the purified gas can be smoothly discharged, ensuring the smooth operation of the system. The output shaft of the drive motor 10 extends into the interior of the filter box 4 and is fixedly connected to the rotating shaft of the rotating shaft 15. The filter box 4 provides convenience for daily inspection and maintenance of the equipment. A blower 8 is fixedly installed at the top of the filter box 4. An exhaust port 17 is opened at the top of the filter box 4. The blower 8 is located above the exhaust port 17. One end of the blower 8 is fixedly connected to the discharge pipe 9. The blower 8 is located in the middle of the filter box 4 to absorb dust and prevent leakage during the replacement of the filter plate 12.

[0028] Working Principle: Smoke and dust first enter the cyclone separator 2 through the smoke and dust inlet pipe 18. Centrifugal force separates larger smoke and dust particles, initially reducing the smoke and dust concentration. Larger particles fall to the bottom and return to the combustion chamber via the return feeder. Fine smoke and dust particles enter the spray tower 3, where liquid spraying further removes remaining dust, sulfides, and other pollutants. Finally, the smoke and dust enter the filter box 4, where filter plates 12 perform fine filtration, effectively intercepting fine particulate matter. Compared to traditional single dust removal equipment, this significantly improves overall dust removal efficiency, ensuring that smoke and dust emissions meet stringent environmental standards. When a filter plate 12 needs maintenance or replacement, the operator can close the manual valve 6 on the corresponding connecting pipe 5 and connect another... When the manual valve 6 is opened, the output shaft of the drive motor 10 rotates, causing the rotating shaft 15 to rotate. This allows the arc-shaped plate 11 containing the filter plate 12 to be maintained to be rotated to the inspection door 7. The filter plate 12 can then be quickly disassembled for maintenance using the magnetic interface 16. Simultaneously, the sealing gasket 13 on the adjacent arc-shaped plate 11 blocks the air outlet in the connecting pipe 5, ensuring the normal operation of other filter plates 12. The sealing gasket 13 and filter plate 12 alternate in sequence. During the maintenance process, the blower 8 absorbs the flue gas, preventing leakage of flue gas through the filter plate 12 and avoiding shutdown of the entire unit due to filter plate 12 maintenance. This effectively ensures the continuous and stable operation of the boiler.

[0029] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0030] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application 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 application should be included within the protection scope of this application.

Claims

1. A boiler flue gas emission reduction system, comprising a base (1), characterized in that: A spray tower (3) is fixedly installed on the top of the base (1). A filter box (4) is fixedly installed on the top of the base (1) and on one side of the spray tower (3). A conveying pipe (19) is fixedly connected to the bottom of the spray tower (3). A connecting pipe (5) is fixedly connected to both sides of the filter box (4). The end of the connecting pipe (5) away from the filter box (4) is connected to the conveying pipe (19). A rotating shaft (15) is rotatably installed on the inner wall of the filter box (4). Several fixing parts (14) are fixedly connected to the outer periphery of the rotating shaft (15). An arc-shaped plate (11) is fixedly connected to the end of the fixing part (14) away from the rotating shaft (15). Two of the arc-shaped plates (11) are provided with magnetic interfaces (16) inside. The outer walls of the other two arc-shaped plates (11) are fixedly connected with sealing gaskets (13). The sealing gaskets (13) and the magnetic interfaces (16) are arranged adjacent to each other.

2. The boiler dust emission reduction system according to claim 1, characterized in that: The top of each connecting pipe (5) is equipped with a manual valve (6), each magnetic interface (16) is equipped with a filter plate (12), each sealing gasket (13) is in contact with the inner wall of the filter box (4), and each arc-shaped plate (11) is in contact with the inner wall of the filter box (4).

3. The boiler dust emission reduction system according to claim 1, characterized in that: A cyclone separator (2) is fixedly installed on the top of the base (1) and on one side of the spray tower (3). A flue gas inlet pipe (18) is fixedly connected to the top of the cyclone separator (2). A boiler exhaust port (20) is provided at the end of the flue gas inlet pipe (18) away from the cyclone separator (2).

4. The boiler flue gas emission reduction system according to claim 3, characterized in that: The output end of the cyclone separator (2) extends into the interior of the spray tower (3) and is located directly above the spray tower (3). Both sides of the filter box (4) are hinged with maintenance doors (7).

5. A boiler dust emission reduction system according to claim 3, characterized in that: A connecting flange is provided between the dust inlet pipe (18) and the boiler exhaust port (20), and the dust inlet pipe (18) and the boiler exhaust port (20) are connected by the connecting flange.

6. The boiler dust emission reduction system according to claim 1, characterized in that: A drive motor (10) is fixedly installed at the bottom of the filter box (4). The output shaft of the drive motor (10) extends into the interior of the filter box (4) and is fixedly connected to the rotating shaft of the rotating shaft (15).

7. A boiler dust emission reduction system according to claim 1, characterized in that: A blower (8) is fixedly installed on the top of the filter box (4). An exhaust port (17) is opened above the filter box (4). The blower (8) is located above the exhaust port (17). One end of the blower (8) is fixedly connected to an exhaust pipe (9).

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