Multi-stage rotational flow spraying structure of ammonia desulfurization tower

Abstract

The utility model relates to the technical field of desulfurizing towers, and provides a multi-stage rotational flow spraying structure of an ammonia process desulfurizing tower, which comprises a tower body, a fixed ring, a lower layer frame, an upper layer frame, a fixed plate, a support rod, a barrier plate, a movable plate and a buffer spring. The fixed ring is installed in the tower body, the lower layer frame is installed on the lower surface of the fixed ring, the upper layer frame is installed on the upper surface of the fixed ring, the fixed plate is installed in the fixed ring, the supporting rod penetrates through the fixed plate, the blocking plate is installed at the top end of the supporting rod, the movable plate is installed on the outer surface of the supporting rod, and the buffer spring is installed in the fixed ring. A circular through groove is formed in the fixing ring, the size of the circular through groove is matched with the size of the blocking plate, the bottom end of the buffer spring is installed on the upper surface of the movable plate, and the movable plate is slidably connected into the fixing ring. According to the technical scheme, the problem of waste gas accumulation in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower technology, specifically to a multi-stage swirl spray structure for an ammonia desulfurization tower. Background Technology

[0002] Ammonia desulfurization is a widely used technology in the chemical industry. It involves using ammonia to absorb sulfur dioxide from the tail gas of sulfuric acid production, producing ammonium sulfide and ammonium sulfate. In ammonia desulfurization towers, cyclone separators are often used to centrifuge the waste gas, allowing liquid ammonia to better mix with the waste gas.

[0003] The current spraying method involves high-speed spraying of small droplets into the tower, causing sulfur in the waste gas to be adsorbed into the droplets and react. However, the waste gas moves in a relatively fixed direction after entering the tower, resulting in some waste gas passing through the spray head and being discharged directly.

[0004] In existing spraying methods, when the exhaust gas passes through the blades in the swirl plate, the flow direction changes, the path becomes longer, and centrifugal motion occurs, generating centrifugal force. This is then combined with the spraying equipment to desulfurize the exhaust gas. However, due to the centrifugal force, the exhaust gas tends to move upward along the inner wall of the tower, causing the exhaust gas to concentrate in one place and come into contact with the spray liquid.

[0005] The above-mentioned spraying method causes the exhaust gas to change direction after passing through the swirl plate, which can easily lead to the exhaust gas moving along the inner wall of the tower and forming accumulation. Therefore, we propose a multi-stage swirl spraying structure for the ammonia desulfurization tower. Utility Model Content

[0006] This invention proposes a multi-stage swirl spray structure for an ammonia desulfurization tower to solve the problem of waste gas accumulation in the prior art.

[0007] The technical solution of this utility model is as follows: A multi-stage cyclone spray structure for an ammonia desulfurization tower, comprising a tower body, and further comprising:

[0008] The fixing ring is installed inside the tower body, the lower frame is installed on the lower surface of the fixing ring, and the upper frame is installed on the upper surface of the fixing ring, which can gather the dispersed exhaust gas inward. The fixing plate is installed inside the fixing ring, the support rod passes through the fixing plate, the blocking plate is installed at the top of the support rod, the moving plate is installed on the outer surface of the support rod, and the buffer spring is installed inside the fixing ring, which can reset the moving plate.

[0009] As a preferred embodiment of the multi-stage cyclone spray structure of the ammonia desulfurization tower of this utility model, in order to increase the contact area between the waste gas and the treatment liquid, a shielding ring is installed inside the fixing ring, and a protective box is installed inside the fixing ring.

[0010] As a preferred embodiment of the multi-stage swirl spray structure of the ammonia desulfurization tower of this utility model, in order to prevent the treatment liquid from entering the inside of the drive motor, the drive motor is installed inside the protective box, and a drive rod is rotatably connected inside the protective box.

[0011] In a preferred embodiment of the multi-stage swirl spray structure of the ammonia desulfurization tower of this utility model, in order to drive the moving plate to reciprocate, the outer end of the transmission rod is keyed to the output end of the transmission motor, and the inner end of the transmission rod is equipped with a cam.

[0012] As a preferred embodiment of the multi-stage cyclone spray structure of the ammonia desulfurization tower of this utility model, in order to gather the dispersed waste gas, a circular through groove is provided inside the fixing ring, and the size of the circular through groove is adapted to the size of the baffle plate.

[0013] As a preferred embodiment of the multi-stage swirl spray structure of the ammonia desulfurization tower of this utility model, in order to facilitate the movement of components, the bottom end of the buffer spring is installed on the upper surface of the moving plate, and the moving plate is slidably connected to the fixed ring.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] In this invention, the rotating cam drives the moving plate to move upward along the fixed ring. The fixed ring compresses the buffer spring, causing the support rod to move the blocking plate upward, opening the top of the fixed ring. This allows the waste gas dispersed on the inner wall of the tower to be gathered towards the center, preventing the waste gas from moving in one direction and accumulating, and increasing the contact area between the waste gas and the treatment liquid.

[0016] In this invention, the output end of the drive motor rotates to drive the transmission rod to rotate, causing the cam to move in a circular motion along the transmission rod, pushing the moving plate up and down. This makes it easier for the operator to operate the up and down reciprocating switch of the blocking plate, intermittently discharging the waste gas gathered in the lower frame 3 upwards, giving the treatment liquid sufficient reaction time. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the desulfurization tower structure of this utility model;

[0019] Figure 2 This is a vertical sectional view of the desulfurization tower structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the auxiliary component structure of this utility model;

[0021] Figure 4 This is a vertical sectional view of the auxiliary component structure of this utility model.

[0022] In the diagram: 1. Tower body; 2. Fixing ring; 3. Lower frame; 4. Upper frame; 5. Fixing plate; 6. Support rod; 7. Baffle plate; 8. Moving plate; 9. Buffer spring; 10. Shielding ring; 11. Protective box; 12. Drive motor; 13. Drive rod; 14. Cam; 15. Air inlet pipe; 16. Air outlet pipe; 17. Mounting plate; 18. Material pump; 19. Discharge pipe; 20. Feed pipe; 21. Spray pipe; 22. Spray head; 23. Connecting pipe; 24. Swirl plate. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figures 1-4 As shown in the figure, this embodiment proposes a multi-stage swirl spray structure for an ammonia desulfurization tower, including a tower body 1, a fixing ring 2, a lower frame 3, an upper frame 4, a fixing plate 5, a support rod 6, a baffle plate 7, a moving plate 8, and a buffer spring 9.

[0025] The fixed ring 2 is installed inside the tower body 1, and the lower frame 3 is installed on the lower surface of the fixed ring 2. The exhaust gas moves upward along the lower frame 3, which gathers the exhaust gas dispersed inside the tower body 1 inward, preventing the exhaust gas from accumulating in a certain place inside the tower body 1. The upper frame 4 is installed on the upper surface of the fixed ring 2. The sprayed treatment liquid moves downward along the upper frame 4 and finally gathers at the baffle plate 7. After the baffle plate 7 is opened, the treatment liquid flows downward along the circular channel.

[0026] The fixing plate 5 is installed inside the fixing ring 2, the support rod 6 passes through the fixing plate 5, and the baffle plate 7 is installed at the top of the support rod 6. The support rod 6 drives the baffle plate 7 to move up and down, so that the operator can control the intermittent discharge of exhaust gas, thereby prolonging the reaction time between exhaust gas and treatment liquid. The fixing ring 2 has a circular through groove inside, the size of which is adapted to the size of the baffle plate 7 to prevent exhaust gas from leaking out when the baffle plate 7 is closed.

[0027] The movable plate 8 is installed on the outer surface of the support rod 6 to limit the movement range of the blocking plate 7 and prevent the blocking plate 7 from slipping. The buffer spring 9 is installed inside the fixed ring 2, and the bottom end of the buffer spring 9 is installed on the upper surface of the movable plate 8, which can reset the movable plate 8 after the cam 14 moves away from the movable plate 8. The movable plate 8 is slidably connected to the fixed ring 2.

[0028] A shielding ring 10 is installed inside the fixed ring 2 to shield the downward-flowing treatment fluid. A protective box 11 is installed inside the fixed ring 2 to prevent the treatment fluid from entering the drive motor 12. The drive motor 12 is installed inside the protective box 11. A transmission rod 13 is rotatably connected inside the protective box 11. The outer end of the transmission rod 13 is keyed to the output end of the drive motor 12. A cam 14 is installed on the inner end of the transmission rod 13. When the cam 14 contacts the moving plate 8, it can drive the moving plate 8 to move upward. After the cam 14 moves away from the moving plate 8, the moving plate 8 is reset under the action of the buffer spring 9.

[0029] In this embodiment, an air inlet pipe 15 is connected to the outer surface of the tower body 1, an air outlet pipe 16 is connected to the upper surface of the tower body 1, an installation plate 17 is installed on the outer surface of the tower body 1, and a material pump 18 is installed on the upper surface of the installation plate 17. The treatment liquid is circulated and sprayed through the pipeline connected to the material pump 18, which improves the reaction efficiency between the treatment liquid and the waste gas. The output end and input end of the material pump 18 are respectively equipped with an outlet pipe 19 and an inlet pipe 20. The outer surface of the outlet pipe 19 is connected to a spray pipe 21, which penetrates the outer surface of the tower body 1. The lower surface of the spray pipe 21 is connected to a nozzle 22. The bottom end of the inlet pipe 20 is connected to a connecting pipe 23. The left end of the connecting pipe 23 is connected to the outer surface of the tower body 1. A swirl plate 24 is installed inside the tower body 1.

[0030] In this embodiment, the exhaust gas enters the tower body 1 through the inlet pipe 15, and moves upward after being centrifuged by the swirl plate 24 located at the bottom. The material pump 18 is started, and the output end of the material pump 18 draws out the treatment liquid from the tower body 1 and the outside through the connecting pipe. It is then transferred to the spray pipe 21 along the discharge pipe 19, and then sprayed out through the nozzle 22 to treat the exhaust gas.

[0031] When the exhaust gas passes through the swirl plate 24 in the middle, it gathers inward along the lower frame 3 and enters the fixed ring 2. The drive motor 12 is started, and the output end of the drive motor 12 rotates, which drives the drive rod 13 to rotate. The rotation of the drive rod 13 drives the cam 14 to rotate. When the cam 14 rotates and contacts the moving plate 8, the protruding part of the cam 14 pushes the moving plate 8 upward. The moving plate 8 moves upward, which drives the support rod 6 to move upward. The moving plate 8 moves upward, which compresses the buffer spring 9. The moving plate 8 moves upward along the inside of the fixed ring 2. The support rod 6 moves upward along the fixed plate 5. The upward movement of the support rod 6 drives the baffle plate 7 to move upward. The baffle plate 7 moves upward and extends out from the fixed ring 2. The exhaust gas is discharged along the circular channel of the fixed ring 2 and then sprays out the treatment liquid through the nozzle 22 in the middle, so that the exhaust gas reacts with the treatment liquid. The reaction products flow back downward through the circular channel.

[0032] When the cam 14 moves away from the moving plate 8, the buffer spring 9 rebounds and drives the moving plate 8 to move downward. The moving plate 8 moves downward along the fixed ring 2. The downward movement of the moving plate 8 drives the support rod 6 to move downward. The support rod 6 moves downward along the fixed plate 5. The downward movement of the support rod 6 drives the blocking plate 7 to move downward. The downward movement of the blocking plate 7 blocks the top of the circular through groove. After the above operation, the exhaust gas is discharged intermittently. The treated exhaust gas is discharged along the exhaust pipe 16 for subsequent treatment processes.

[0033] It should be noted that the left end of the inlet pipe 15 is connected to the equipment for discharging exhaust gas from the outside, the right end of the outlet pipe 16 is connected to the equipment for further treatment of exhaust gas from the outside, and the right end of the connecting pipe 23 is connected to the equipment for storing treatment liquid from the outside. The swirl plate 24 is equipped with blades inside. When the exhaust gas moves upward through the blades, centrifugal force is generated. There is a gap between the two sets of adjacent blades to facilitate the passage of exhaust gas and treatment liquid. The upper frame 4 is an inverted frustum, and the lower frame 3 is an upright frustum. The interiors of the upper frame 4 and the lower frame 3 are through cavities to facilitate the passage of exhaust gas and treatment liquid.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-stage swirl spray structure for an ammonia desulfurization tower, comprising a tower body (1), characterized in that, Also includes: A fixing ring (2) is installed inside the tower body (1), a lower frame (3) is installed on the lower surface of the fixing ring (2), and an upper frame (4) is installed on the upper surface of the fixing ring (2). A fixing plate (5) is installed inside the fixing ring (2); A support rod (6) passes through the fixed plate (5), and a baffle plate (7) is installed at the top of the support rod (6); A movable plate (8) is mounted on the outer surface of the support rod (6); A buffer spring (9) is installed inside the fixed ring (2).

2. The multi-stage swirl spray structure of the ammonia desulfurization tower according to claim 1, characterized in that, A shielding ring (10) is installed inside the fixing ring (2), and a protective box (11) is installed inside the fixing ring (2).

3. The multi-stage swirl spray structure of the ammonia desulfurization tower according to claim 2, characterized in that, The protective box (11) is equipped with a drive motor (12), and the protective box (11) is rotatably connected to a drive rod (13).

4. The multi-stage swirl spray structure of the ammonia desulfurization tower according to claim 3, characterized in that, The outer end of the transmission rod (13) is keyed to the output end of the transmission motor (12), and the inner end of the transmission rod (13) is equipped with a cam (14).

5. The multi-stage swirl spray structure of the ammonia desulfurization tower according to claim 1, characterized in that, The fixed ring (2) has a circular through groove inside, and the size of the circular through groove is adapted to the size of the baffle plate (7).

6. The multi-stage swirl spray structure of the ammonia desulfurization tower according to claim 1, characterized in that, The bottom end of the buffer spring (9) is mounted on the upper surface of the movable plate (8), which is slidably connected to the fixed ring (2).

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