Desulfurizing tower for purifying sintering flue gas

Abstract

The utility model relates to a desulfurization tower for sintering flue gas purification, which is applied to the field of sintering flue gas purification and comprises a desulfurization tower body, the left end of the desulfurization tower body is fixedly connected with a gas inlet pipe, an inner cavity of the desulfurization tower body is fixedly connected with a plurality of baffle plates, and a liquid inlet pipe is arranged in the desulfurization tower body. The lower end of the liquid inlet pipe fixedly penetrates through the multiple baffle plates and the desulfurizing tower body in sequence, the right end of the desulfurizing tower body is fixedly connected with a liquid outlet pipe, multiple mounting holes are formed in the outer surface of the desulfurizing tower body, spraying assemblies are arranged in the mounting holes, and each spraying assembly comprises multiple mounting blocks fixedly connected to the outer surface of the liquid inlet pipe; the spraying pipes are arranged in the inner cavities of the mounting blocks, the liquid inlet pipe is arranged in the center of the desulfurizing tower, the multiple detachable spraying pipes are arranged on the surface of the liquid inlet pipe, when the surface of each spraying pipe is hardened, a worker can disassemble, assemble and replace the single spraying pipe, time and labor are saved, and therefore the maintenance efficiency of the worker is effectively improved.

Description

Technical Field

[0001] This utility model relates to a desulfurization tower, and more particularly to a desulfurization tower for sintering flue gas purification. Background Technology

[0002] Sintering is an important step in steel production, which generates a large amount of flue gas containing pollutants such as sulfur dioxide. In the process of flue gas treatment, desulfurization towers are needed to desulfurize the pollutants in the flue gas.

[0003] Chinese Patent Publication No. CN220657021U discloses a multi-stage desulfurization tower. This utility model is equipped with a slurry preparation tank, a slurry pump, a slurry delivery pipe, and a spray layer. After the flue gas enters the interior of the desulfurization tower body, the slurry pump draws limestone slurry from the slurry preparation tank into the interior of the spray layer through the slurry delivery pipe, and then sprays it out through nozzles. The sulfide flue gas rises inside the desulfurization tower body and reacts with the multi-layered sprayed limestone slurry to generate calcium sulfite from the sulfide pollutants in the flue gas, thereby improving the desulfurization efficiency of the desulfurization tower.

[0004] However, the above patent will still have the following problems in actual application: The nozzle in the above patent is a fixed structure and is directly installed below the spray layer. During the spraying process in the desulfurization tower, the nozzle often becomes clogged due to the formation of solid deposits on the surface of the nozzle. At this time, the nozzle needs to be maintained and replaced. The existing fixed installation nozzle will cause inconvenience to the staff when replacing it, thus reducing the staff's maintenance efficiency. Utility Model Content

[0005] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that the nozzles in the existing desulfurization towers are fixed, which makes it inconvenient for workers to replace the nozzles when they become clogged, thus reducing the maintenance efficiency of the workers.

[0006] To address the aforementioned problems, this utility model provides a desulfurization tower for purifying sintering flue gas, comprising a desulfurization tower body, an inlet pipe fixedly connected to the left end of the desulfurization tower body, multiple baffles fixedly connected to the inner cavity of the desulfurization tower body, and a liquid inlet pipe provided inside the desulfurization tower body, the lower end of which sequentially penetrates the multiple baffles and the desulfurization tower body; an outlet pipe fixedly connected to the right end of the desulfurization tower body; multiple mounting holes drilled on the outer surface of the desulfurization tower body, and spraying components provided within the mounting holes; the spraying components include multiple mounting blocks fixedly connected to the outer surface of the liquid inlet pipe, and spraying pipes provided within the inner cavities of the mounting blocks; the outer surface of the spraying pipes... A positioning block is fixedly fitted on the surface. The inner wall of the mounting block fits against the outer surface of the positioning block. Both the upper and lower inner walls of the mounting block are drilled with receiving holes. A compression spring is fixedly connected to the transverse inner wall of the receiving hole. A locking block is fixedly connected to the end of the compression spring near the positioning block. Both the upper and lower ends of the positioning block are drilled with locking grooves. The locking block moves through the adjacent locking groove. A sealing block is fixedly connected to the end of the spray pipe away from the positioning block. The sealing block moves through the adjacent mounting hole. A flange is fixedly connected to the end of the sealing block away from the spray pipe. A handle is fixedly connected to the end of the flange away from the sealing block. The flange is fixedly connected to the desulfurization tower body by bolts.

[0007] In the aforementioned desulfurization tower for purifying sintering flue gas, an inlet pipe is installed at the center of the desulfurization tower, and multiple detachable spray pipes are installed on the surface of the inlet pipe. When the surface of the spray pipe becomes caked, the staff can disassemble and replace a single spray pipe, saving time and effort, thereby effectively improving the maintenance efficiency of the staff.

[0008] As a further improvement of this application, multiple spray pipes are arranged in a ring array around the central axis of the liquid inlet pipe, and the multiple spray pipes and baffles are staggered.

[0009] As a further improvement of this application, the baffles on the left and right sides are staggered, and the upper end of the baffles is inclined downward.

[0010] As a further improvement of this application, the mounting hole is perfectly matched with the sealing block, and the length and width of the positioning block are both smaller than the length and width of the sealing block.

[0011] As another improvement of this application, the corresponding ends of the two longitudinally opposite card blocks are rounded, and the spray pipe is connected to the liquid inlet pipe.

[0012] As another improvement of this application, a detection component is provided below the spray pipe. The detection component includes an elastic block located below the spray pipe. The elastic block is located at the end of the spray pipe away from the liquid inlet pipe. A pressure sensor and a bellows are fixedly connected to the lower end of the elastic block. The pressure sensor is located inside the bellows. The lower ends of the pressure sensor and the bellows are jointly fixedly connected to a support plate. A support rod is fixedly connected to the lower end of the support plate. The lower end of the support rod is fixedly connected to an adjacent baffle plate.

[0013] In summary, in practical applications, when it is necessary to replace the spray pipe, the multiple bolts on the flange can be removed, and the spray pipe can be pulled outward by holding the handle. At this time, the locking block is subjected to pressure and moves towards the inside of the receiving hole, and the compression spring is compressed until the positioning block is separated from the mounting block. Then the spray pipe can be removed and its surface can be treated or replaced, which makes it easier for staff to maintain and replace the spray pipe and effectively saves maintenance time. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the desulfurization tower body structure according to the first embodiment of this application;

[0016] Figure 3 This is a cross-sectional view of the desulfurization tower body structure according to the first embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the spray assembly structure according to the first embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the positioning block structure according to the first embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the sealing block structure according to the first embodiment of this application;

[0020] Figure 7 This is a schematic diagram of the scraper ring structure according to the second embodiment of this application.

[0021] Explanation of the labels in the diagram:

[0022] 1. Desulfurization tower body, 2. Baffle plate, 3. Liquid inlet pipe, 4. Mounting hole, 5. Mounting block, 6. Spray pipe, 7. Positioning block, 8. Accommodation hole, 9. Compression spring, 10. Locking block, 11. Sealing block, 12. Flange, 13. Handle, 14. Elastic block, 15. Pressure sensor, 16. Air inlet pipe, 17. Bellows, 18. Support plate, 19. Support rod. Detailed Implementation

[0023] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0024] First implementation method:

[0025] Figure 1 , Figure 2 and Figure 3The diagram shows a desulfurization tower for purifying sintering flue gas, comprising a desulfurization tower body 1. An inlet pipe 16 is fixedly connected to the left end of the desulfurization tower body 1. Flue gas enters the interior of the desulfurization tower body 1 through the inlet pipe 16. Multiple baffles 2 are fixedly connected to the inner cavity of the desulfurization tower body 1. The baffles 2 on the left and right sides are staggered, and the upper ends of the baffles 2 are inclined downwards. The baffles 2 can obstruct the flue gas, increasing its travel path. Then, through the spraying of each layer of spray pipes 6, the flue gas is further purified. The flue gas is in full contact with the spray liquid, which effectively improves the desulfurization effect. The downward-sloping baffle 2 facilitates the sliding of the spray liquid. The desulfurization tower body 1 is equipped with an inlet pipe 3, which is located in the middle of the desulfurization tower body 1 and transports liquid to multiple spray pipes 6. The lower end of the inlet pipe 3 is fixedly connected to multiple baffles 2 and the desulfurization tower body 1. The right end of the desulfurization tower body 1 is fixedly connected to an outlet pipe. Multiple mounting holes 4 are drilled on the outer surface of the desulfurization tower body 1, and spray components are installed in the mounting holes 4.

[0026] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The spray assembly includes multiple mounting blocks 5 fixedly connected to the outer surface of the liquid inlet pipe 3. The inner cavity of each mounting block 5 is equipped with a spray pipe 6, which communicates with the liquid inlet pipe 3, allowing liquid inside the liquid inlet pipe 3 to enter the spray pipe 6. The multiple spray pipes 6 are arranged in a circular array around the central axis of the liquid inlet pipe 3, and are staggered with the baffle plate 2, ensuring sufficient contact between the flue gas and the liquid sprayed from each layer of spray pipes 6, effectively improving the desulfurization effect. A positioning block 7 is fixedly fitted onto the outer surface of the spray pipe 6. The inner wall of the mounting block 5 fits against the outer surface of the positioning block 7, and both the upper and lower inner walls of the mounting block 5 have receiving holes 8. A compression spring 9 is fixedly connected to the transverse inner wall of the receiving hole 8. A locking block 10 is fixedly connected to one end of the compression spring 9 near the positioning block 7. The corresponding ends of two longitudinally opposite locking blocks 10 are rounded to facilitate locking. The positioning block 7 has slots at both ends, and the locking block 10 moves through the adjacent slots. The positioning block 7 and the mounting block 5 can limit and fix the spray pipe 6. The locking block 10 and the slots can position the positioning block 7. The end of the spray pipe 6 away from the positioning block 7 is fixedly connected to the sealing block 11. The sealing block 11 moves through the adjacent mounting hole 4. The mounting hole 4 and the sealing block 11 are perfectly matched, effectively preventing flue gas from escaping through the mounting hole 4. The length and width of the positioning block 7 are smaller than the length and width of the sealing block 11, making it easy to remove the positioning block 7. The end of the sealing block 11 away from the spray pipe 6 is fixedly connected to the flange 12. The end of the flange 12 away from the sealing block 11 is fixedly connected to the handle 13, which is convenient for the staff to pick up. The flange 12 is fixedly connected to the desulfurization tower body 1 by bolts. The flange 12 and the bolts can fix the spray assembly.

[0027] After the flue gas enters the desulfurization tower body 1 through the inlet pipe 16, the limestone slurry enters the interior of multiple spray pipes 6 through the liquid inlet pipe 3, and is then sprayed into the desulfurization tower body 1 through the spray pipes 6, where it comes into contact with the flue gas to desulfurize it. The liquid then falls onto the surface of the baffle plate 2 and flows into the bottom of the desulfurization tower body 1, and is discharged through the liquid outlet pipe. When it is necessary to replace the spray pipe 6, multiple bolts on the flange 12 can be removed, and the spray pipe 6 can be pulled outward by holding the handle 13. At this time, the locking block 10 is under pressure and moves towards the receiving hole 8, and the compression spring 9 is compressed until the positioning block 7 is disengaged from the mounting block 5. Then the spray pipe 6 can be removed for surface treatment or replacement, which facilitates the maintenance and replacement of the spray pipe 6 by the staff and effectively saves maintenance time.

[0028] Second implementation method:

[0029] This embodiment adds a detection component to the first embodiment, while the rest remains the same as the first embodiment.

[0030] Figure 7 The diagram shows that a detection component is located below the spray pipe 6. This component includes an elastic block 14 positioned below the spray pipe 6, at the end of the spray pipe 6 furthest from the inlet pipe 3. Multiple nozzles are mounted on the surface of the spray pipe 6. The elastic block 14 is located between adjacent nozzles and does not contact them. The vibration amplitude is greater where the spray pipe 6 is furthest from the inlet pipe 3, allowing for faster and better detection and identification when nozzles on the spray pipe 6 become clogged. The elastic block 14 fits snugly against the outer surface of the spray pipe 6, absorbing the slight vibrations generated during use and supporting the spray pipe 6, thus effectively improving the stability of the spray pipe 6 during operation. The lower end of the elastic block 14 is fixedly connected to a pressure sensor 15 and a bellows 17. Those skilled in the art can select a suitable model of pressure sensor 15 according to actual needs, such as SQB. The pressure sensor 15 is located inside the bellows 17. The pressure sensor 15 can monitor the vibration force on the elastic block 14 in real time, while the bellows 17 can protect the pressure sensor 15. The lower ends of the pressure sensor 15 and the bellows 17 are fixedly connected to a support plate 18. The lower end of the support plate 18 is fixedly connected to a support rod 19. The lower end of the support rod 19 is fixedly connected to the adjacent baffle plate 2. The support plate 18 and the support rod 19 can provide support.

[0031] During the spraying process through the spray pipe 6, the spray pipe 6 will vibrate slightly due to the spray from the nozzles on its surface. At this time, the elastic block 14 is in contact with the spray pipe 6, and the pressure sensor 15 is subjected to a weaker compressive force, so that the elastic block 14 absorbs the vibration force generated by the spray pipe 6, thereby effectively improving the stability of the spray pipe 6 during use. However, when solid deposits are generated on the surface of the spray pipe 6, causing partial blockage of the nozzles, the local fluid resistance inside the spray pipe 6 will increase, the pressure inside the pipe will increase, and thus cause a stronger pressure fluctuation, which will increase the vibration of the spray pipe 6. At this time, the compressive force on the pressure sensor 15 will increase, thereby transmitting the pressure information to the external controller to prompt the staff that the spray pipe 6 is blocked, so that the staff can replace and maintain the spray pipe 6.

[0032] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A desulphurization tower for sintering flue gas cleaning, comprising a desulphurization tower body (1), characterized in that: The left end of the desulfurization tower body (1) is fixedly connected with an air inlet pipe (16), the inner cavity of the desulfurization tower body (1) is fixedly connected with a plurality of baffle plates (2), and the desulfurization tower body (1) is internally provided with a liquid inlet pipe (3), the lower end of the liquid inlet pipe (3) is sequentially fixedly penetrated through the plurality of baffle plates (2) and the desulfurization tower body (1), the right end of the desulfurization tower body (1) is fixedly connected with a liquid outlet pipe, the outer surface of the desulfurization tower body (1) is excavated with a plurality of mounting holes (4), and the mounting holes (4) are internally provided with a spraying assembly; The spraying assembly comprises a plurality of mounting blocks (5) fixedly connected to the outer surface of the liquid inlet pipe (3), the inner cavity of the mounting block (5) is provided with a spraying pipe (6), the outer surface of the spraying pipe (6) is fixedly sleeved with a positioning block (7), the inner wall of the mounting block (5) is attached to the outer surface of the positioning block (7), and the upper and lower inner walls of the mounting block (5) are excavated with accommodating holes (8), the transverse inner wall of the accommodating hole (8) is fixedly connected with a compression spring (9), one end of the compression spring (9) close to the positioning block (7) is fixedly connected with a clamping block (10), the upper and lower ends of the positioning block (7) are excavated with clamping grooves, the clamping block (10) is movably penetrated through the adjacent clamping grooves, one end of the spraying pipe (6) away from the positioning block (7) is fixedly connected with a sealing block (11), the sealing block (11) is movably penetrated through the adjacent mounting hole (4), one end of the sealing block (11) away from the spraying pipe (6) is fixedly connected with a flange (12), one end of the flange (12) away from the sealing block (11) is fixedly connected with a handle (13), and the flange (12) and the desulfurization tower body (1) are fixedly connected through bolts.

2. A desulphurization tower for cleaning of sintering flue gases according to claim 1, characterized in that: A plurality of the spraying pipes (6) are arranged in a ring array around the central axis of the liquid inlet pipe (3), and the plurality of spraying pipes (6) and the baffle plates (2) are alternately distributed.

3. A desulphurization tower for cleaning of sintering flue gases according to claim 2, characterized in that: The baffle plates (2) on the left and right sides are alternately distributed, and the upper end of the baffle plate (2) is in a downward inclined state.

4. A desulphurization tower for cleaning of sintering flue gases according to claim 1, characterized in that: The mounting hole (4) is completely matched with the sealing block (11), and the length and width of the positioning block (7) are smaller than those of the sealing block (11).

5. A desulphurization tower for cleaning of sintering flue gases according to claim 1, characterized in that: The corresponding ends of the two longitudinally opposite clamping blocks (10) are both rounded, and the spraying pipe (6) communicates with the liquid inlet pipe (3).

6. A desulphurization tower for cleaning of sintering flue gases according to claim 1, characterized in that: The lower side of the spraying pipe (6) is provided with a detection assembly, the detection assembly comprises an elastic block (14) located below the spraying pipe (6), the elastic block (14) is located at one end of the spraying pipe (6) away from the liquid inlet pipe (3), the lower end of the elastic block (14) is fixedly connected with a pressure sensor (15) and a bellows (17), the pressure sensor (15) is located in the bellows (17), and the lower ends of the pressure sensor (15) and the bellows (17) are fixedly connected with a support plate (18), the lower end of the support plate (18) is fixedly connected with a support rod (19), and the lower end of the support rod (19) is fixedly connected with the adjacent baffle plate (2).

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