A tail gas desulfurization spray tower slag removal anti-blocking device

Abstract

The utility model discloses a tail gas desulfurization spray tower slag removal anti -block device relates to desulfurizing tower slag removal technical field, including desulfurizing tower, stirring subassembly, slag removal subassembly, the bottom of desulfurizing tower is equipped with the liquid storage cavity, and the outside of desulfurizing tower is equipped with the circulating pump who communicates with the liquid storage cavity, and the inner wall of desulfurizing tower is equipped with the slag removal port who communicates with the liquid storage cavity, stirring subassembly includes stirring part, drive part, the slag removal subassembly includes guide slag cylinder, slag removal part, stores the slag piece, and the row, the crystallization slag that produces in the liquid storage cavity is driven after being driven to enter guide slag cylinder from the slag removal port in, and under the rotation of slag removal part, promotes and discharges to the slag piece in, can in the process of desulfurizing tower work and discharge crystallization slag, thereby need not close and stop desulfurizing tower and clean up crystallization slag, guarantee the normal operation of desulfurizing tower, and avoid circulating pump and send crystallization slag to the pipe, the nozzle and cause the blockage.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower slag removal technology, and in particular to a slag removal and anti-clogging device for tail gas desulfurization spray tower. Background Technology

[0002] Slurry pumps and corrosion-resistant and wear-resistant centrifugal pumps are widely used for conveying liquids containing solids. Even with agitation in the tank (vessel, container), sediment or crystallization will still occur at the bottom. Once the sediment enters the pump chamber and pipelines, it will accelerate pump wear, clog the outlet pipeline and nozzles, and cause level gauge malfunction, leading to safety and environmental accidents. Taking the tail gas desulfurization spray tower as an example, sediment often clogs the inlet of the circulating pump, nozzles, and the high-pressure side of the level gauge, requiring frequent tower shutdowns for cleaning, affecting continuous production.

[0003] Taking a flue gas desulfurization spray tower as an example, in actual production, the spray tower circulation pump sends the solution to the top of the spray tower and uses nozzles to wash and cool the flue gas. This equipment is a key piece of equipment in the production process or safety and environmental protection process. Currently, spray washing and cooling is widely used in flue gas desulfurization in China. However, due to changes in operating conditions during actual production, the solid-liquid ratio in the tank (vessel, tank) often increases, and sediment will form at the bottom of the tank (vessel, tank). The sediment will cause wear on the pump and outlet pipes, and blockage of nozzles and level gauges, seriously affecting the spray washing effect and causing serious safety and environmental accidents. If the machine is shut down to clean the sediment, production will inevitably be interrupted, affecting production efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a slag removal and anti-clogging device for a tail gas desulfurization spray tower, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A tail gas desulfurization spray tower slag removal and anti-clogging device includes: The desulfurization tower has a liquid storage chamber at its bottom; a circulation pump connected to the liquid storage chamber is provided on the outside of the desulfurization tower, and a slag discharge port connected to the liquid storage chamber is provided on the inner wall of the desulfurization tower. The stirring assembly includes a stirring element rotatably disposed within a liquid storage chamber and a driving element connected to the stirring element; the driving element is located outside the desulfurization tower; the outer edge of the stirring element is clearance-fitted with the inner wall of the desulfurization tower. The slag removal assembly includes a slag guide cylinder disposed outside the desulfurization tower and a slag discharge component rotatably disposed inside the slag guide cylinder; the slag guide cylinder has a slag discharge chamber inside and a slag storage component outside the slag guide cylinder; the slag discharge chamber is connected to the slag discharge port; the slag storage component has a slag storage chamber inside and the slag storage chamber is connected to the slag discharge chamber; the driving component rotates under the action of external force, thereby driving the stirring component to rotate to push the crystallized slag in the storage chamber into the slag discharge chamber; the slag discharge component rotates under the action of external force, thereby causing the crystallized slag in the slag discharge chamber to move upward and fall into the slag storage chamber.

[0006] Furthermore, a support pipe is provided inside the liquid storage chamber; a protective cover is provided in the middle of the support pipe; the stirring component includes a stirring shaft rotatably disposed in the middle of the support pipe and stirring blades disposed on the stirring shaft; the outer edge of the stirring blades is clearance-fitted with the inner wall of the desulfurization tower.

[0007] Furthermore, the driving component includes a drive motor disposed outside the desulfurization tower and a transmission worm gear disposed on the stirring shaft; the output end of the drive motor is provided with a transmission rod; the transmission rod is located inside the support tube, and a transmission worm gear meshing with the transmission worm gear is provided on the transmission rod.

[0008] Furthermore, a transition pipe is provided on the outer wall of the slag discharge port; a slag inlet is provided on the bottom side wall of the slag guide cylinder; and the transition pipe is connected to the slag inlet.

[0009] Furthermore, the slag discharge component includes a drive motor mounted on the slag guide cylinder and a drive shaft rotatably mounted inside the slag guide cylinder; the drive shaft is connected to the output end of the drive motor, and a spiral blade located inside the slag guide cylinder is provided on the drive shaft; the outer edge of the spiral blade is clearance-fitted with the inner wall of the slag guide cylinder.

[0010] Furthermore, the upper outer wall of the slag guide cylinder is provided with a slag outlet; the slag outlet is provided with a slag discharge pipe; the slag storage component includes a slag storage tank, and the slag discharge pipe is connected to the slag storage tank.

[0011] Furthermore, the height of the plane where the slag outlet is located is greater than the height of the liquid level in the storage chamber.

[0012] Beneficial effects: The rotation of the drive component drives the rotation of the agitator, causing the crystallized slag generated in the storage chamber to be driven into the slag guide tube through the slag discharge port. Under the rotation of the slag discharge component, it is lifted and discharged into the slag storage container. The crystallized slag can be discharged during the operation of the desulfurization tower, so that the desulfurization tower does not need to be shut down to clean the crystallized slag, ensuring the normal operation of the desulfurization tower and avoiding the circulation pump from transporting the crystallized slag to the pipeline and nozzle, causing blockage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a tail gas desulfurization spray tower slag removal and anti-clogging device according to the present invention. Figure 2 This is a schematic diagram of the internal structure of a tail gas desulfurization spray tower slag removal and anti-clogging device according to the present invention. Figure label: 1. Desulfurization tower; 2. Liquid storage chamber; 3. Circulating pump; 4. Slag discharge port; 5. Agitator; 501. Agitator shaft; 502. Agitator blade; 6. Drive unit; 601. Drive motor; 602. Transmission worm gear; 603. Transmission rod; 604. Transmission worm; 7. Slag guide cylinder; 8. Slag discharge component; 801. Transmission motor; 802. Transmission shaft; 803. Spiral blade; 9. Slag discharge chamber; 10. Slag storage component; 1001. Slag storage tank; 11. Slag storage chamber; 12. Support pipe; 13. Protective cover; 14. Mounting cylinder; 15. First bearing; 16. Second bearing; 17. Support plate; 18. Transition pipe; 19. Slag inlet; 20. Third bearing; 21. Cover; 22. Slag outlet; 23. Slag discharge pipe; 24. Filter screen; 25. End cover. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0015] In one embodiment, see Figure 1 A tail gas desulfurization spray tower slag removal and anti-clogging device includes a desulfurization tower 1, a stirring assembly, and a slag removal assembly.

[0016] The desulfurization tower 1 has a liquid storage chamber 2 at its bottom, a circulation pump 3 connected to the liquid storage chamber 2 on the outside of the desulfurization tower 1, and a slag discharge port 4 connected to the liquid storage chamber 2 on the inner wall of the desulfurization tower 1. The stirring assembly includes a stirring element 5 rotatably disposed in the liquid storage chamber 2 and a driving element 6 connected to the stirring element 5. The driving element 6 is located outside the desulfurization tower 1, and the outer edge of the stirring element 5 is clearance-fitted with the inner wall of the desulfurization tower 1. The slag removal assembly includes a slag guide cylinder 7 disposed outside the desulfurization tower 1 and a slag discharge port 4 rotatably disposed in the liquid storage chamber 2. The slag discharge component 8 is located inside the slag cylinder 7. The slag discharge chamber 9 is located inside the slag guide cylinder 7. The slag storage component 10 is located outside the slag guide cylinder 7. The slag discharge chamber 9 is connected to the slag discharge port 4. The slag storage component 10 is connected to the slag storage chamber 9. The drive component 6 rotates under the action of external force, which in turn drives the stirring component 5 to rotate so as to push the crystallized slag in the liquid storage chamber 2 into the slag discharge chamber 9. The slag discharge component 8 rotates under the action of external force, which in turn drives the crystallized slag in the slag discharge chamber 9 to move upward and fall into the slag storage chamber 11.

[0017] Further, see Figure 1 , 2 The storage chamber 2 is provided with a support pipe 12, and a protective cover 13 is provided in the middle of the support pipe 12. The stirring component 5 includes a stirring shaft 501 rotatably disposed in the middle of the support pipe 12 and a stirring blade 502 disposed on the stirring shaft 501. The outer edge of the stirring blade 502 is clearance-fitted with the inner wall of the desulfurization tower 1.

[0018] Preferably, the support pipe 12 is welded to the inner wall of the desulfurization tower 1 in a cross shape, and the protective cover 13 is welded to the middle of the support pipe 12 in an arc shape.

[0019] Further, see Figure 1 , 2 The driving component 6 includes a drive motor 601 disposed outside the desulfurization tower 1 and a transmission worm gear 602 disposed on the stirring shaft 501. The output end of the drive motor 601 is provided with a transmission rod 603, which is located inside the support tube 12. The transmission rod 603 is provided with a transmission worm 604 that meshes with the transmission worm gear 602.

[0020] Preferably, an installation cylinder 14 is welded to the middle of the support tube 12. The installation cylinder 14 is hollow inside and has a first bearing 15 at the bottom. The stirring rod is fixedly connected to the inner ring of the first bearing 15. One end of the stirring rod passes through the first bearing 15 and is located inside the installation cylinder 14 and connected to the transmission worm gear 602.

[0021] Preferably, a second bearing 16 is provided on the side wall of the desulfurization tower 1. The second bearing 16 is set directly opposite the axis of the support tube 12. A support plate 17 is provided at the bottom of the drive motor 601. The support plate 17 is welded to the outer wall of the desulfurization tower 1. The output end of the drive motor 601 is connected to the transmission rod 603 through a coupling. The transmission rod 603 is fixedly connected to the inner ring of the second bearing 16. The transmission tube is located inside the support tube 12 and its end is connected to the transmission worm gear 604.

[0022] Further, see Figure 1 , 2 A transition pipe 18 is provided on the outer wall of the slag discharge port 4, and a slag inlet 19 is provided on the bottom side wall of the slag guide cylinder 7. The transition pipe 18 is connected to the slag inlet 19.

[0023] Preferably, the slag discharge port 4 is a rectangular opening, and the transition pipe 18 is a hollow rectangular pipe with openings at both ends. The transition pipe 18 is welded to the desulfurization tower 1 and the slag guide tube 7 respectively, so that the slag discharge port 4 is connected to the slag inlet 19 through the transition pipe 18.

[0024] Preferably, the slag guide tube 7 is a hollow cylindrical tube.

[0025] In the above configuration, the drive motor 601 rotates, which in turn drives the transmission rod 603 to rotate. The transmission rod 603 drives the transmission worm gear 604 to rotate. The transmission worm gear 604 meshes with the transmission worm wheel 602, thereby driving the stirring shaft 501 to rotate. The stirring shaft 501 drives the stirring blade 502 to rotate, so that the crystallized slag in the desulfurization tower 1 rotates with the stirring blade 502 and enters the transition pipe 18 from the slag discharge port 4, and finally enters the slag guide tube 7. The transition pipe 18 is only used to connect the desulfurization tower 1 and the slag guide tube 7, so its length is relatively short and there is no clogging problem.

[0026] Further, see Figure 1 , 2 The slag discharge component 8 includes a drive motor 801 mounted on the slag guide cylinder 7 and a drive shaft 802 rotatably mounted inside the slag guide cylinder 7. The drive shaft 802 is connected to the output end of the drive motor 801. The drive shaft 802 is provided with a spiral blade 803 located inside the slag guide cylinder 7. The outer edge of the spiral blade 803 is in clearance fit with the inner wall of the slag guide cylinder 7.

[0027] Preferably, the drive motor 801 is bolted to the top of the slag guide cylinder 7. The top of the slag guide cylinder 7 is provided with a third bearing 20. One end of the drive shaft 802 is fixedly connected to the inner ring of the third bearing 20 and connected to the output end of the drive motor 801 through a coupling.

[0028] Preferably, the second bearing 16 and the third bearing 20 are each provided with a cover 21.

[0029] Further, see Figure 1 , 2 The upper outer wall of the slag guide cylinder 7 is provided with a slag outlet 22, and a slag outlet pipe 23 is provided at the slag outlet 22. The slag storage component 10 includes a slag storage tank 1001, and the slag outlet pipe 23 is connected to the slag storage tank 1001.

[0030] Preferably, the slag discharge pipe 23 is welded to the slag guide cylinder 7 and the slag storage tank 1001 respectively. The slag storage tank 1001 is a hollow rectangular body, and the top of the slag storage tank 1001 is provided with an end cap 25.

[0031] Further, see Figure 1 , 2 The height of the plane where the slag outlet 22 is located is greater than the height of the liquid level in the liquid storage chamber 2.

[0032] Preferably, the circulating pump 3 is a slurry pump in the existing structure. A connecting pipe is provided between the circulating pump 3 and the desulfurization tower 1. A filter screen 24 is provided at the port of the connecting pipe connected to the desulfurization tower 1. During the rotation of the stirring blade 502, not only can the crystallized slag be discharged into the slag guide cylinder 7, but the crystallized slag coming out of the filter screen 24 can also be scraped off, so as to avoid the filter screen 24 from clogging.

[0033] In the above configuration, the drive motor 801 rotates, driving the drive shaft 802 and the spiral blade 803 to rotate. The rotation of the spiral blade 803 drives the crystallized slag in the transition pipe 18 to move upward along the slag discharge chamber 9 and discharge it from the slag outlet 22. The crystallized slag falls from the slag outlet pipe 23 into the slag storage tank 1001. Since the plane height of the slag outlet 22 is greater than the liquid level height in the liquid storage chamber 2, only the crystallized slag is discharged from the slag outlet 22. The crystallized slag in the slag storage tank 1001 can be cleaned after opening the end cover.

[0034] In this embodiment, the crystallized slag generated in the storage chamber 2 is driven by the stirring blade 502 and enters the slag guide tube 7 from the slag discharge port 4. Under the rotation of the spiral blade 803, it is lifted to the slag discharge port 22 and discharged. It then enters the slag storage tank 1001 along the slag discharge pipe 23. During the operation of the desulfurization tower 1, the crystallized slag can be discharged, so there is no need to shut down the desulfurization tower 1 to clean the crystallized slag, ensuring the normal operation of the desulfurization tower 1, and avoiding the circulation pump 3 from transporting the crystallized slag to the pipeline and nozzle, causing blockage.

[0035] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent changes, modifications, and improvements made without departing from the spirit and principles of the utility model should be included within the scope of the utility model.

Claims

1. A slag removal and anti-clogging device for a tail gas desulfurization spray tower, characterized in that, include: The desulfurization tower (1) has a liquid storage chamber (2) at the bottom; the desulfurization tower (1) is equipped with a circulation pump (3) that communicates with the liquid storage chamber (2) on the outside, and a slag discharge port (4) that communicates with the liquid storage chamber (2) is provided on the inner wall of the desulfurization tower (1). The stirring assembly includes a stirring element (5) rotatably disposed in the liquid storage chamber (2) and a driving element (6) connected to the stirring element (5); the driving element (6) is located outside the desulfurization tower (1); the outer edge of the stirring element (5) is clearance-fitted with the inner wall of the desulfurization tower (1); The slag removal assembly includes a slag guide cylinder (7) disposed outside the desulfurization tower (1) and a slag discharge component (8) rotatably disposed inside the slag guide cylinder (7); the slag guide cylinder (7) has a slag discharge chamber (9) inside and a slag storage component (10) outside the slag guide cylinder (7); the slag discharge chamber (9) is connected to the slag discharge port (4); the slag storage component (10) has a slag storage chamber (11) inside; the slag storage chamber (11) is connected to the slag discharge chamber (9); the driving component (6) rotates under the action of external force, thereby driving the stirring component (5) to rotate to push the crystallized slag in the liquid storage chamber (2) into the slag discharge chamber (9); the slag discharge component (8) rotates under the action of external force, thereby driving the crystallized slag in the slag discharge chamber (9) to move upward and fall into the slag storage chamber (11).

2. The tail gas desulfurization spray tower slag removal and anti-clogging device according to claim 1, characterized in that: The liquid storage chamber (2) is provided with a support pipe (12); the middle part of the support pipe (12) is provided with a protective cover (13); the stirring component (5) includes a stirring shaft (501) rotatably disposed in the middle part of the support pipe (12) and stirring blades (502) disposed on the stirring shaft (501); the outer edge of the stirring blades (502) is clearance-fitted with the inner wall of the desulfurization tower (1).

3. The tail gas desulfurization spray tower slag removal and anti-clogging device according to claim 2, characterized in that: The driving component (6) includes a driving motor (601) disposed outside the desulfurization tower (1) and a transmission worm gear (602) disposed on the stirring shaft (501); the output end of the driving motor (601) is provided with a transmission rod (603); the transmission rod (603) is located inside the support tube (12), and the transmission rod (603) is provided with a transmission worm (604) that meshes with the transmission worm gear (602).

4. The slag removal and anti-clogging device for a tail gas desulfurization spray tower according to claim 3, characterized in that: The outer wall of the slag discharge port (4) is provided with a transition pipe (18); the bottom side wall of the slag guide cylinder (7) is provided with a slag inlet (19); the transition pipe (18) is connected to the slag inlet (19).

5. The slag removal and anti-clogging device for a tail gas desulfurization spray tower according to claim 4, characterized in that: The slag discharge component (8) includes a drive motor (801) mounted on the slag guide cylinder (7) and a drive shaft (802) rotatably mounted inside the slag guide cylinder (7); the drive shaft (802) is connected to the output end of the drive motor (801), and a spiral blade (803) located inside the slag guide cylinder (7) is provided on the drive shaft (802); the outer edge of the spiral blade (803) is clearance-fitted with the inner wall of the slag guide cylinder (7).

6. The tail gas desulfurization spray tower slag removal and anti-clogging device according to claim 5, characterized in that: The upper outer wall of the slag guide cylinder (7) is provided with a slag outlet (22); the slag outlet (22) is provided with a slag outlet pipe (23); the slag storage component (10) includes a slag storage tank (1001), and the slag outlet pipe (23) is connected to the slag storage tank (1001).

7. The slag removal and anti-clogging device for a tail gas desulfurization spray tower according to claim 6, characterized in that: The height of the plane where the slag outlet (22) is located is greater than the height of the liquid level in the liquid storage chamber (2).

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