A fluidized bed boiler for treating papermaking sludge

Abstract

This application relates to the papermaking field, and in particular to a fluidized bed boiler for treating papermaking sludge. Addressing the shortcomings of existing technologies that cannot rapidly press the sludge, resulting in difficulty in separating the moisture contained in the sludge, the following solution is proposed: a drainage tank; a support plate fixedly connected to one side of the drainage tank, with two baffles fixedly connected to the top of the support plate; a discharge port located on one side of the drainage tank, with a boiler fixedly connected to one side of the discharge port; six support columns fixedly connected to the bottom of the drainage tank, the support plate, and the boiler, with an adsorption tank fixedly connected to the top of the boiler; a flue gas outlet located on the top of the adsorption tank, with a first housing fixedly connected to one side of the drainage tank; and a transmission assembly fixedly connected to one side of the first housing. This application enables rapid pressing of the sludge, facilitating the separation of moisture from the sludge.

Description

Technical Field

[0001] This application relates to the papermaking industry, and in particular to a fluidized bed boiler for treating papermaking sludge. Background Technology

[0002] Incineration technology is a process in which different types and properties of coal or sludge are blended in a certain proportion during coal combustion in a boiler to generate heat or energy. Its basic principle is to utilize the composition of different coal types, blending them according to requirements to ensure that the final coal meets or closely approximates the boiler's design coal requirements in terms of performance indicators, thereby achieving high boiler efficiency, sufficient output, and good environmental performance. The paper industry generates a large amount of sludge. Compared with traditional methods such as sanitary landfill, agricultural utilization, marine disposal, and building material utilization, sludge incineration is the most thorough sludge treatment method, offering significant advantages such as rapid processing, high volume reduction, and resource reuse. In short, after drying, papermaking sludge can be used for co-incineration and still retains its value.

[0003] Patent document CN205402692U discloses a coal-water slurry fluidized bed boiler that co-fires papermaking sludge. The boiler includes a furnace, a fluidized bed, and a coal-water slurry feeder. The furnace has a dense phase zone and a dilute phase zone from bottom to top. The fluidized bed is located at the bottom of the furnace, and the coal-water slurry feeder is located above the dilute phase zone. The boiler also includes a hot flue gas generator, a wind chamber, a volute separator, a convection tube bundle for absorbing heat from the flue gas, an economizer for recovering waste heat from the flue gas, an air preheater for preheating cold air, and a sludge feeding device for feeding papermaking sludge. This utility model provides a coal-water slurry fluidized bed boiler that can cleanly burn co-fired papermaking sludge.

[0004] However, the aforementioned water-coal slurry fluidized bed boiler that co-fires papermaking sludge cannot quickly press the sludge, resulting in the difficulty in separating the water contained in the sludge. To address this issue, we propose a fluidized bed boiler for treating papermaking sludge. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that cannot quickly press sludge, resulting in difficulty in separating the moisture contained in the sludge, and to propose a fluidized bed boiler for treating papermaking sludge.

[0006] The fluidized bed boiler for treating papermaking sludge provided in this application adopts the following technical solution:

[0007] A fluidized bed boiler for treating papermaking sludge, comprising:

[0008] Drainage tank;

[0009] A support plate is fixedly connected to one side of the drainage tank, and two baffles are fixedly connected to the top of the support plate;

[0010] The discharge port is located on one side of the drainage box, and a boiler is fixedly connected to one side of the discharge port.

[0011] Six support columns are fixedly connected to the bottom of the drainage tank, the support plate and the boiler, respectively, and an adsorption box is fixedly connected to the top of the boiler.

[0012] The exhaust port is located at the top of the adsorption box, and the first box body is fixedly connected to one side of the drainage box;

[0013] The transmission assembly is fixedly connected to one side of the first housing.

[0014] Furthermore, the transmission assembly includes a motor fixedly connected to one side of the first housing, and the output shaft of the motor is fixedly connected to a first threaded rod, a first threaded sleeve is threadedly connected to the first threaded rod, and a pressure plate is fixedly connected to one side of the first threaded sleeve.

[0015] Furthermore, the pressure plate is slidably connected to the top of the support plate, and one end of the first threaded rod is fixedly connected to the first drive shaft, and one end of the first drive shaft is fixedly connected to the first bevel gear.

[0016] Furthermore, a second bevel gear meshes with the first bevel gear, and a second drive shaft is fixedly connected to the second bevel gear, with a support rod rotatably connected to the second drive shaft.

[0017] Furthermore, the support rod is fixedly connected to one side of the drainage tank, and a second tank body is fixedly connected to one side of the drainage tank, with a third drive shaft rotatably connected to the top of the second tank body.

[0018] Furthermore, both the second and third drive shafts are fixedly connected to sprockets, and the same chain meshes on the two sprockets. One end of the third drive shaft is fixedly connected to a second threaded rod.

[0019] Furthermore, a second threaded sleeve is threadedly connected to the second threaded rod, and a switch plate is fixedly connected to one side of the second threaded sleeve, while an incinerator is fixedly connected to the bottom of the boiler.

[0020] Furthermore, the bottom of the drainage tank is provided with a through groove, and a cover plate is slidably connected to the bottom of the drainage tank. A first push rod motor is fixedly connected to the bottom of the drainage tank. A connecting rod is fixedly connected to the output shaft of the first push rod motor. One end of the connecting rod is fixedly connected to the bottom of the cover plate. A fixing ring is provided on one side of the second bevel gear. A second push rod motor is fixedly connected to one side of the fixing ring. The second push rod motor is fixedly connected to one side of the drainage tank.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. This solution can quickly press sludge, making it easy to separate the water in the sludge. The motor drives the first threaded rod to rotate, the first threaded rod drives the first threaded sleeve to move, the first threaded sleeve drives the pressure plate to move, and the pressure plate pushes the sludge into the drainage tank. The baffles on both sides prevent the sludge from falling. After the sludge enters the drainage tank, it is pressed on the switch plate, so that the residual water is squeezed out.

[0023] 2. This solution facilitates the discharge of water. The first push rod motor drives the connecting rod to move, and the connecting rod drives the cover plate to move. The cover plate opens the through groove, allowing the squeezed water to be discharged through the through groove, thus avoiding the problem of water being difficult to discharge. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a fluidized bed boiler for treating papermaking sludge according to Embodiment 1 of this application;

[0025] Figure 2 This is a three-dimensional cross-sectional view of the first chamber of a fluidized bed boiler for treating papermaking sludge, according to Embodiment 1 of this application.

[0026] Figure 3 This is a bottom perspective three-dimensional schematic diagram of a fluidized bed boiler for treating papermaking sludge in Embodiment 1 of this application;

[0027] Figure 4 This is a bottom cross-sectional perspective view of a fluidized bed boiler for treating papermaking sludge, as described in Embodiment 1 of this application.

[0028] Reference numerals: 1. Drainage tank; 2. Support plate; 3. Baffle; 4. Discharge port; 5. Boiler; 6. Support column; 7. Adsorption box; 8. Flue gas outlet; 9. First housing; 10. Motor; 11. First threaded rod; 12. First threaded sleeve; 13. Pressure plate; 14. First drive shaft; 15. First bevel gear; 16. Second bevel gear; 17. Second drive shaft; 18. Support rod; 19. Second housing; 20. Third drive shaft; 21. Sprocket; 22. Chain; 23. Second threaded rod; 24. Second threaded sleeve; 25. Switch plate; 26. Incinerator; 27. Through slot; 28. Cover plate; 29. ​​First push rod motor; 30. Connecting rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example 1

[0031] Reference Figures 1-4 A fluidized bed boiler for treating papermaking sludge, comprising:

[0032] Drainage tank 1;

[0033] The support plate 2 is fixedly connected to one side of the drainage tank 1, and two baffles 3 are fixedly connected to the top of the support plate 2;

[0034] The discharge port 4 is located on one side of the drainage tank 1, and the boiler 5 is fixedly connected to one side of the discharge port 4.

[0035] Six support columns 6 are fixedly connected to the bottom of the drainage tank 1, the support plate 2 and the boiler 5 respectively, and an adsorption box 7 is fixedly connected to the top of the boiler 5.

[0036] The exhaust port 8 is located on the top of the adsorption box 7, and the first box 9 is fixedly connected to one side of the drainage box 1.

[0037] The transmission assembly is fixedly connected to one side of the first housing 9.

[0038] Specifically, the transmission assembly includes a motor 10 fixedly connected to one side of the first housing 9, and the output shaft of the motor 10 is fixedly connected to a first threaded rod 11, a first threaded sleeve 12 is threadedly connected to the first threaded rod 11, and a pressure plate 13 is fixedly connected to one side of the first threaded sleeve 12.

[0039] Specifically, the pressure plate 13 is slidably connected to the top of the support plate 2, and one end of the first threaded rod 11 is fixedly connected to the first drive shaft 14, and one end of the first drive shaft 14 is fixedly connected to the first bevel gear 15.

[0040] Specifically, a second bevel gear 16 meshes with the first bevel gear 15, and a second drive shaft 17 is fixedly connected to the second bevel gear 16. A support rod 18 is rotatably connected to the second drive shaft 17.

[0041] Specifically, the support rod 18 is fixedly connected to one side of the drainage tank 1, and a second tank body 19 is fixedly connected to one side of the drainage tank 1. A third drive shaft 20 is rotatably connected to the top of the second tank body 19.

[0042] Specifically, sprockets 21 are fixedly connected to both the second drive shaft 17 and the third drive shaft 20, and the same chain 22 is meshed on both sprockets 21. A second threaded rod 23 is fixedly connected to one end of the third drive shaft 20.

[0043] Specifically, a second threaded sleeve 24 is threadedly connected to the second threaded rod 23, and a switch plate 25 is fixedly connected to one side of the second threaded sleeve 24. An incinerator 26 is fixedly connected to the bottom of the boiler 5.

[0044] Specifically, the bottom of the drainage tank 1 is provided with a through groove 27, and a cover plate 28 is slidably connected to the bottom of the drainage tank 1. A first push rod motor 29 is fixedly connected to the bottom of the drainage tank 1. A connecting rod 30 is fixedly connected to the output shaft of the first push rod motor 29. One end of the connecting rod 30 is fixedly connected to the bottom of the cover plate 28. A fixing ring is provided on one side of the second bevel gear 16. A second push rod motor is fixedly connected to one side of the fixing ring. The second push rod motor is fixedly connected to one side of the drainage tank 1.

[0045] The implementation principle of a fluidized bed boiler for treating papermaking sludge in this embodiment is as follows: First, the sludge is placed at the bottom of the support plate 2. Then, the motor 10 is started. The motor 10 drives the first threaded rod 11 to rotate. The first threaded rod 11 drives the first threaded sleeve 12 to move. The first threaded sleeve 12 drives the pressure plate 13 to move. The pressure plate 13 pushes the sludge into the drainage tank 1. The baffles 3 on both sides prevent the sludge from falling. After entering the drainage tank 1, the sludge is pressed onto the switch plate 25, so that the residual water is absorbed. After squeezing out the water, the first push rod motor 29 is activated. The first push rod motor 29 drives the connecting rod 30 to move, and the connecting rod 30 drives the cover plate 28 to move. The cover plate 28 opens the through groove 27, allowing the squeezed water to be discharged through the through groove 27, thus avoiding the problem of water not being able to be discharged. Then the pressure plate 13 is reset, causing the first threaded rod 11 to drive the first drive shaft 14 to rotate. The first drive shaft 14 drives the first bevel gear 15 to rotate, and the first bevel gear 15 drives the second bevel gear 16 to rotate. The second drive shaft 17 rotates, which in turn drives the sprocket 21 to rotate. The sprocket 21, via the chain 22, drives another sprocket 21 to rotate. The sprocket 21 then drives the third drive shaft 20 to rotate, which in turn drives the second threaded rod 23 to rotate. The second threaded rod 23 moves the second threaded sleeve 24, which in turn moves the switch plate 25. The switch plate 25 opens the drain tank 1, allowing sludge to enter the boiler 5 through the discharge port 4. This starts the second push rod motor, which drives the solid... The fixed ring moves, and the fixed ring unlocks the second bevel gear 16, preventing the second bevel gear 16 from meshing with the first bevel gear 15, thus preventing the switch plate 25 from closing. Then, the motor 10 is started, and the motor 10 drives the pressure plate 13 to push the sludge into the boiler 5. The incinerator 26 dries the sludge before it enters the boiler 5. Then, the incinerator 26 incinerates the sludge that has entered. The exhaust gas passes through the adsorption box 7, which adsorbs impurities in the exhaust gas. Then, the exhaust gas is discharged through the exhaust port 8.

[0046] Example 2

[0047] The difference between this embodiment and embodiment one is that a collection box is fixedly connected to the bottom of the drainage tank 1. When the cover plate 28 opens the channel 27, the wastewater is discharged through the channel 27 and then collected by the collection box, which facilitates the recycling of the wastewater.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fluidized bed boiler for treating papermaking sludge, characterized in that: include: Drainage tank (1); The support plate (2) is fixedly connected to one side of the drainage tank (1), and two baffles (3) are fixedly connected to the top of the support plate (2). The discharge port (4) is located on one side of the drainage box (1), and a boiler (5) is fixedly connected to one side of the discharge port (4). Six support columns (6) are fixedly connected to the bottom of the drainage tank (1), support plate (2) and boiler (5) respectively, and an adsorption box (7) is fixedly connected to the top of the boiler (5). The exhaust port (8) is located on the top of the adsorption box (7), and the first box body (9) is fixedly connected to one side of the drainage box (1). The transmission assembly is fixedly connected to one side of the first housing (9); The transmission assembly includes a motor (10) fixedly connected to one side of the first housing (9), and the output shaft of the motor (10) is fixedly connected to a first threaded rod (11), a first threaded sleeve (12) is threadedly connected to the first threaded rod (11), and a pressure plate (13) is fixedly connected to one side of the first threaded sleeve (12). The pressure plate (13) is slidably connected to the top of the support plate (2), and one end of the first threaded rod (11) is fixedly connected to the first drive shaft (14), and one end of the first drive shaft (14) is fixedly connected to the first bevel gear (15). The first bevel gear (15) is meshed with a second bevel gear (16), and a second drive shaft (17) is fixedly connected to the second bevel gear (16). A support rod (18) is rotatably connected to the second drive shaft (17). The support rod (18) is fixedly connected to one side of the drainage box (1), and a second box body (19) is fixedly connected to one side of the drainage box (1). A third drive shaft (20) is rotatably connected to the top of the second box body (19). Both the second drive shaft (17) and the third drive shaft (20) are fixedly connected to sprockets (21), and the two sprockets (21) are meshed with the same chain (22). One end of the third drive shaft (20) is fixedly connected to a second threaded rod (23). The second threaded rod (23) is threaded with a second threaded sleeve (24), and a switch plate (25) is fixedly connected to one side of the second threaded sleeve (24). The bottom of the boiler (5) is fixedly connected with an incinerator (26).

2. A fluidized bed boiler for treating papermaking sludge according to claim 1, characterized in that: The bottom of the drainage tank (1) is provided with a through groove (27), and the bottom of the drainage tank (1) is slidably connected with a cover plate (28). The bottom of the drainage tank (1) is fixedly connected with a first push rod motor (29). The output shaft of the first push rod motor (29) is fixedly connected with a connecting rod (30). One end of the connecting rod (30) is fixedly connected to the bottom of the cover plate (28). A fixing ring is provided on one side of the second bevel gear (16). A second push rod motor is fixedly connected to one side of the fixing ring. The second push rod motor is fixedly connected to one side of the drainage tank (1).

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