A spraying device for a desulfurization tower of a thermal power plant

Abstract

The utility model discloses a kind of spraying devices for desulfurization tower of thermal power plant, it is related to thermal power generation technical field, including spraying tower body, collection pedestal, spray pipe and spray head, the both sides of the spraying tower body are all connected with flue inlet pipe and pass through, the top of the spraying tower body is connected with flue outlet pipe and pass through, the bottom of the spraying tower body is provided with collection pedestal, the inside of the collection pedestal is provided with sedimentation mechanism, sedimentation mechanism inside is retained by metal sintered filter element Large particle suspended solids, so that liquid is deposited and purified, and then liquid is recycled and treated, the inside of the spraying tower body is provided with dismounting mechanism. The utility model is through the communication design of corrugated sheet spare through equidistance drainage hole and sediment tank, realizes the dual goal of efficient drainage and pollutant interception, through the sintered filter element retained impurities after liquid spraying below setting, corrugated sheet prolongs the time of liquid falling, cooperates and reduces slurry turbidity.

Description

Technical Field

[0001] This utility model relates to the field of thermal power generation technology, specifically a spray device for desulfurization towers in thermal power plants. Background Technology

[0002] In thermal power generation, sulfur dioxide is one of the main pollutants produced during the process, which can lead to environmental problems such as acid rain and chemical smog. In order to reduce emissions, efficient desulfurization technology needs to be adopted in the flue gas treatment process of thermal power plants. As a key piece of equipment in the desulfurization tower, the performance of the spray device directly affects the desulfurization effect.

[0003] Currently, most desulfurization tower spray systems use pipe fittings and nozzles that are embedded inside the tower body by welding or flange fixing. While this design ensures structural stability, it results in poor maintenance accessibility and long fault repair cycles. Maintenance personnel need to enter the confined space inside the tower to operate, making it difficult to reach the deposits on the back of the nozzles and increasing the difficulty of cleaning the nozzles and pipe fittings. Utility Model Content

[0004] The purpose of this invention is to provide a spray device for desulfurization towers in thermal power plants to solve the problems mentioned in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A spraying device for a desulfurization tower in a thermal power plant includes a spraying tower body, a collection base, spraying pipes, and nozzles. Both sides of the spraying tower body are connected to inlet pipes, and the top of the spraying tower body is connected to an exhaust pipe. A collection base is located at the bottom of the spraying tower body, and a sedimentation mechanism is installed inside the collection base. This sedimentation mechanism uses a sintered metal filter element to trap large suspended particles, allowing the liquid to settle and be purified, and then recycled. The spraying tower body also has a disassembly mechanism inside, which disassembles and reassembles the spraying pipes and the inner end of the spraying tower body, thereby disassembling and cleaning the spraying pipes and the evenly spaced nozzles.

[0006] As a preferred technical solution, the sedimentation mechanism includes a sedimentation tank, a manual valve, a collection base, corrugated plates, drainage holes, a sedimentation trough, and a sintered metal filter element. The sedimentation tank is located inside the collection base, and a corrugated plate is located directly above the sedimentation tank. The outer side of the corrugated plate is connected to the collection base, and the top of the collection base is connected to the bottom of the spray tower. The bottom of the spray tower also adopts a rectangular opening structure. The sedimentation trough is located inside the sedimentation tank, and drainage holes are evenly spaced on the outer side of the corrugated plate. The sintered metal filter element is located directly above the sedimentation trough and is installed at the inner end of the sedimentation tank.

[0007] As a preferred technical solution, the sedimentation tank is connected to the sedimentation tank through manual valves symmetrically arranged on one side, and the sedimentation tank and the metal sintered filter element are in close contact with each other.

[0008] As a preferred technical solution, the corrugated plate is connected to the sedimentation tank through equally spaced drainage holes.

[0009] As a preferred technical solution, the disassembly mechanism includes a side sealing plate, a liquid injection pump, and a spray pipe. The liquid injection pump is connected to one side of the side sealing plate, and the output end of the liquid injection pump is connected to the spray pipe. Several nozzles are evenly spaced at the bottom end of the spray pipe.

[0010] As a preferred technical solution, the disassembly mechanism further includes a side connecting strip, which is symmetrically arranged on one side of the side sealing plate, and the other side of the side connecting strip is arranged at the inner end of the spray tower body.

[0011] As a preferred technical solution, the side sealing plate is connected to the inner end of the spray tower body by symmetrically arranged side butt strips with grooves, and the side sealing plate and the spray tower body fit together.

[0012] As a preferred technical solution, the side sealing plate is connected to the other side of the spray pipe via a liquid injection pump set on one side, and the spray pipe is set parallel to the corrugated plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves the dual goals of efficient drainage and pollutant interception through the design of corrugated plate components connected to the sedimentation tank via equally spaced drainage holes. The sintered filter element set below intercepts impurities after liquid spraying, and the corrugated plate extends the liquid falling time, which synergistically reduces the turbidity of the slurry and reduces the risk of nozzle clogging. The rectangular opening at the bottom of the spray tower is directly connected to the collection base, eliminating the need for intermediate transition structures and shortening the overall height of the equipment.

[0014] 2. This utility model uses a side sealing plate as the main support component of the disassembly mechanism. The side sealing plate is connected to the groove on the inside of the spray tower through a side butt strip to form a sealing interface. Drainage holes are opened at equal intervals on the outer side of the corrugated plate. Gravity flow is used to achieve the initial separation of sludge and clean water. The hole design avoids sludge accumulation and separates the sedimentation tank from the collection base, making it convenient for operators to clean the residue inside the sedimentation tank. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overhead section of the collecting base in this utility model; Figure 3 This is a schematic diagram of the disassembly mechanism in this utility model; Figure 4 This is a top view of the sedimentation tank in this utility model. Figure 5 This is a schematic diagram of the internal structure of the spray tower body in this utility model.

[0016] The components include: 1. Spray tower body; 2. Smoke inlet pipe; 3. Smoke outlet pipe; 4. Sedimentation tank; 5. Manual valve; 6. Collection base; 7. Sedimentation mechanism; 8. Corrugated plate; 9. Drainage hole; 10. Side sealing plate; 11. Liquid injection pump; 12. Disassembly mechanism; 13. Spray pipe; 14. Side connecting strip; 15. Spray nozzle; 16. Sedimentation tank; 17. Metal sintered filter element. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 5 As shown, the spraying device for desulfurization towers in thermal power plants provided by this utility model includes a spraying tower body 1, a collection base 6, a spraying pipe 13, and spray nozzles 15. Both sides of the spraying tower body 1 are connected to a flue gas inlet pipe 2, and the top of the spraying tower body 1 is connected to a flue gas outlet pipe 3. The bottom of the spraying tower body 1 is provided with a collection base 6, and a sedimentation mechanism 7 is provided inside the collection base 6. The sedimentation mechanism 7 uses a metal sintered filter element 17 to intercept large suspended particles, so that the liquid is precipitated and purified, and then the liquid is recycled. The spraying tower body 1 is provided with a disassembly mechanism 12 inside, which disassembles and assembles the spraying pipe 13 and the inner end of the spraying tower body 1, and then disassembles and cleans the spraying pipe 13 and the spray nozzles 15 that are evenly spaced.

[0019] In some embodiments, the sedimentation mechanism 7 includes a sedimentation tank 4, a manual valve 5, a collection base 6, a corrugated plate 8, drainage holes 9, a sedimentation trough 16, and a sintered metal filter element 17. The sedimentation tank 4 is disposed inside the collection base 6. A corrugated plate 8 is disposed directly above the sedimentation tank 4. The outer side of the corrugated plate 8 is connected to the collection base 6. The top of the collection base 6 is connected to the bottom of the spray tower body 1. The bottom of the spray tower body 1 also adopts a rectangular open structure. The sedimentation trough 16 is disposed inside the sedimentation tank 4. Drainage holes 9 are equally spaced on the outer side of the corrugated plate 8. The sintered metal filter element 17 is disposed directly above the sedimentation trough 16 and is installed at the inner end of the sedimentation tank 4. The sedimentation tank 4 is connected to the sedimentation trough 16 through a manual valve 5 symmetrically arranged on one side. The sedimentation tank 4 and the sintered metal filter element 17 are in close contact with each other. The corrugated plate 8 is connected to the sedimentation tank 4 through the equally spaced drainage holes 9.

[0020] In some specific implementations, the aforementioned drain holes 9 can be arranged uniformly along the corrugation direction of the corrugated plate 8 to ensure uniform water flow distribution and avoid local scouring or siltation. The filtered liquid is settled through the sedimentation tank 16, which facilitates the recycling of the liquid. At the same time, by utilizing the synergistic effect of the corrugated plate 8 and the sintered metal filter element 17, combined with the modular structure design, low-maintenance solid-liquid separation is achieved.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the disassembly mechanism 12 includes a side sealing plate 10, a liquid injection pump 11, a spray pipe 13, a side connecting strip 14, and a nozzle 15. The liquid injection pump 11 is connected to one side of the side sealing plate 10, and the output end of the liquid injection pump 11 is connected to the spray pipe 13. The side connecting strip 14 is symmetrically arranged on one side of the side sealing plate 10, and the other side of the side connecting strip 14 is located at the inner end of the spray tower body 1. The nozzles 15 are evenly spaced at the bottom end of the spray pipe 13, and the spray pipe 13 is located inside the spray tower body 1. The side sealing plate 10 is connected to the inner end of the spray tower body 1 through grooves formed by the symmetrically arranged side connecting strip 14, and the side sealing plate 10 and the spray tower body 1 are in close contact with each other. The side sealing plate 10 is connected to the other side of the spray pipe 13 through the liquid injection pump 11 arranged on one side, and the spray pipe 13 is arranged parallel to the corrugated plate 8.

[0022] In some specific embodiments, the side sealing plate 10 is connected to the tower body groove by a snap-fit ​​connection of the side connecting strip 14. The injection pump 11 and the spray pipe 13 adopt a modular design. The faulty spray pipe 13 can be hoisted and replaced as a whole. The inner wall of the spray tower body 1 has a pre-set slot. The side sealing plate 10 is fitted into the groove at the inner end of the spray tower body 1 by the symmetrically arranged side connecting strip 14. The sealing strip on one side of the side sealing plate 10 is attached to the outer side of the spray tower body 1. The side sealing plate 10 and the spray tower body 1 are fastened with bolts to form a self-positioning installation structure.

[0023] When using this device, the operator first uses the side sealing plate 10 to precisely fix the side sealing plate 10 to the inner wall groove of the spray tower body 1 using the side connecting strip 14. The liquid injection pump 11 is fixed to the outside of the side sealing plate 10, and its outlet is connected to the spray pipe 13 that extends into the tower. The spray pipe 13 is arranged parallel to the corrugated plate 8, and its bottom is equipped with a series of nozzles 15. External liquids or agents are directly drawn through the liquid injection pump 11, and then the liquid is sprayed through the nozzles 15 to treat the dust in the flue gas inside the spray tower body 1. At the same time, the metal sintered filter element 17 is fixed to the collection base 6 with bolts. The operator then connects the flue gas inlet pipes 2 on both sides of the spray tower body 1 to the exhaust pipe of the combustion equipment, so that they can fully contact the limestone slurry sprayed by the spray pipe 13 to complete the desulfurization reaction. Then, the flue gas that has been dust suppressed and cooled is discharged through the exhaust pipe 3. The flue gas then rises to the area of ​​the corrugated plate 8, and is intercepted by gravity settling and the metal sintered filter element 17 to remove the gypsum slag in the precipitated liquid. After spraying, the liquid is directly separated by the corrugated plate 8 to prevent the sprayed liquid from falling directly into the sedimentation tank 4. This also prevents the liquid from splashing particles and impacting the metal sintered filter element 17 due to excessive flow rate when it falls directly into the sedimentation tank 4. When the liquid dispersed by the corrugated plate passes through the drain hole 9, the droplets form hemispherical droplets at the drain hole 9 due to surface tension. During the fall, the droplets break into smaller droplets due to friction with the air, and finally evenly cover the surface of the metal sintered filter element 17. After filtration, the liquid flows out from the bottom of the sintered metal filter element 17 and flows down the inner wall of the sedimentation tank 4. The filtered liquid falls directly to the bottom of the sedimentation tank 16. The liquid inside the sedimentation tank 4 is discharged directly by opening the manual valve 5. The sintered metal filter element 17 and the sedimentation tank 4 are removed from the inside of the collection base 6. The sintered metal filter element 17 and the sedimentation tank 4 are separated. Then, the residual gypsum residue on the inner wall of the sedimentation tank 4 is rinsed with a high-pressure water gun.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A spraying device for a desulfurization tower in a thermal power plant, characterized in that: The system includes a spray tower body (1), a collection base (6), a spray pipe (13), and spray nozzles (15). Both sides of the spray tower body (1) are connected to a smoke inlet pipe (2), and the top of the spray tower body (1) is connected to a smoke exhaust pipe (3). The bottom of the spray tower body (1) is provided with a collection base (6). The collection base (6) is provided with a sedimentation mechanism (7). The sedimentation mechanism (7) uses a metal sintered filter element (17) to trap large suspended particles, so that the liquid is sedimented and purified, and then the liquid is recycled. The spray tower body (1) is provided with a disassembly mechanism (12). The disassembly mechanism (12) disassembles and assembles the spray pipe (13) and the inner end of the spray tower body (1), and then disassembles and cleans the spray pipe (13) and the spray nozzles (15) that are arranged at equal intervals.

2. The spray device for desulfurization towers in thermal power plants according to claim 1, characterized in that: The sedimentation mechanism (7) includes a sedimentation tank (4), a manual valve (5), a collection base (6), a corrugated plate (8), drainage holes (9), a sedimentation tank (16), and a metal sintered filter element (17). The sedimentation tank (4) is located inside the collection base (6). A corrugated plate (8) is located directly above the sedimentation tank (4). The collection base (6) is connected to the outside of the corrugated plate (8). The bottom end of the spray tower body (1) is connected to the top of the collection base (6). The bottom end of the spray tower body (1) also adopts a rectangular opening structure. The sedimentation tank (16) is located inside the sedimentation tank (4). Drainage holes (9) are equally spaced on the outside of the corrugated plate (8). The metal sintered filter element (17) is located directly above the sedimentation tank (16) and is installed at the inner end of the sedimentation tank (4).

3. The spray device for desulfurization towers in thermal power plants according to claim 2, characterized in that: The sedimentation tank (4) is connected to the sedimentation tank (16) through a manual valve (5) symmetrically arranged on one side, and the sedimentation tank (4) is in close contact with the metal sintered filter element (17).

4. The spray device for desulfurization towers in thermal power plants according to claim 2, characterized in that: The corrugated plate (8) is connected to the sedimentation tank (4) through equally spaced drainage holes (9).

5. The spray device for desulfurization towers in thermal power plants according to claim 1, characterized in that: The disassembly mechanism (12) includes a side sealing plate (10), a liquid injection pump (11), and a spray pipe (13). The side sealing plate (10) is connected to one side of the liquid injection pump (11), and the output end of the liquid injection pump (11) is connected to the spray pipe (13). Several nozzles (15) are evenly spaced at the bottom end of the spray pipe (13).

6. The spray device for desulfurization towers in thermal power plants according to claim 5, characterized in that: The disassembly mechanism (12) also includes a side docking strip (14), which is symmetrically arranged on one side of the side sealing plate (10), and the other side of the side docking strip (14) is arranged at the inner end of the spray tower body (1).

7. The spray device for desulfurization towers in thermal power plants according to claim 6, characterized in that: The side sealing plate (10) is connected to the inner end of the spray tower body (1) by a groove formed by symmetrically arranged side butt strips (14), and the side sealing plate (10) and the spray tower body (1) fit together.

8. The spray device for desulfurization towers in thermal power plants according to claim 7, characterized in that: The side sealing plate (10) is connected to the other side of the spray pipe (13) via a liquid injection pump (11) provided on one side. The spray pipe (13) is arranged parallel to the corrugated plate (8).

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