Wet desulphurization equipment for boiler

Abstract

The invention relates to the technical field of wet desulphurization, and provides boiler wet desulphurization equipment, which comprises a tower body, a multi-stage spraying assembly, a liquid supply assembly, a flue gas pipeline, an exhaust pipeline, a discharge assembly, a gas stirring assembly, a flue gas cooling assembly and a supply pipeline, the multi-stage spraying assembly is installed in the spraying area, the liquid supply assembly is installed in the slurry area, the flue gas pipeline is fixedly installed on the tower body, the exhaust pipeline is communicated with the top of the tower body, the discharge assembly is installed at an air outlet of the exhaust pipeline, the gas stirring assembly is installed on the inner bottom wall of the tower body, and the flue gas cooling assembly is installed in the flue gas pipeline. By means of the technical scheme, the problems that in the prior art, due to the fact that a large number of sediments generated in the desulfurization process are accumulated in the desulfurization tower, blocky objects generated due to the fact that the sediments are accumulated for a long time can block equipment, and the desulfurization continuity is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of wet desulfurization, and in particular to a boiler wet desulfurization device. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The boiler will produce a large amount of flue gas during operation. The flue gas contains harmful gases such as sulfur dioxide (SO2). If it is not removed, it will have adverse effects on the environment and human health. At present, wet desulfurization equipment is generally used to desulfurize the flue gas. Boiler wet desulfurization is a technology for desulfurization treatment in a liquid environment, mainly including limestone-gypsum method, ammonia method, magnesium oxide method, etc. It makes the dust-containing gas in close contact with the liquid, and uses the inertial collision of water droplets and particles or the full mixing of water and dust and other effects to capture particles or enlarge particles or retain them in a fixed container to achieve the effect of water and dust separation.

[0003] During the desulfurization process, a large amount of sediment will be generated. The accumulation of sediment will reduce the space in the desulfurization tower, thereby reducing the working efficiency of the desulfurization system, affecting the use effect of the desulfurizer, and further reducing the desulfurization efficiency. The accumulation of sediment will gradually increase. When it reaches a certain level, the sediment will gradually accumulate and harden, and finally form a lump. The agglomerated sediment will occupy the space in the desulfurization tower, block the nozzles, stuffing boxes and other equipment in the desulfurization tower, and may even cause equipment failure, greatly affecting the continuity of desulfurization and reducing production efficiency. Summary of the invention

[0004] The present invention provides a boiler wet desulfurization equipment, which solves the problem in the related art that a large amount of precipitates generated during the desulfurization process accumulate inside the desulfurization tower, and the lumps generated by the precipitates accumulating for too long will block the equipment and affect the continuity of desulfurization.

[0005] The technical solution of the present invention is as follows: A boiler wet desulfurization device comprises a tower body, wherein the interior of the tower body is configured as a slurry area and a spraying area, and further comprises: A multi-stage spray assembly, which is installed inside the spray area and is used for spraying slurry; A liquid supply assembly, the liquid supply assembly being installed in the slurry area and used for providing slurry to the multi-stage spray assembly; A flue gas pipeline, wherein the flue gas pipeline is fixedly mounted on the tower body, the flue gas pipeline is connected to the tower body, and the connecting position of the flue gas pipeline and the tower body is located between the spraying area and the slurry area; An exhaust pipeline, the exhaust pipeline is connected to the top of the tower body; An exhaust component, which is installed at the air outlet of the exhaust duct and is used to discharge the treated smoke and the spent slurry; A gas stirring assembly, the gas stirring assembly is installed on the inner bottom wall of the tower body and is used to stir the slurry; A flue gas cooling component, which is installed inside the flue gas pipeline and is used to cool the high-temperature flue gas; A supply pipeline is connected to the tower body.

[0006] Based on the above scheme, the multi-stage spray assembly includes: Connecting pipes, three of which are fixedly installed at equal distances inside the slurry area, and the three connecting pipes are arranged in a staggered manner; Spray pipes, a plurality of the spray pipes are connected to the three connecting pipes at equal distances; Discharge joints, with multiple discharge joints being connected at equal distances on both sides of each spray pipe; A first spray head, wherein the lower ends of the discharge joints of the plurality of spray pipes at the top are all connected to the plurality of first spray heads, and the upper and lower ends of the other plurality of discharge joints are all connected to the first spray heads; A demister is fixedly installed inside the tower body and is located on the upper part of the spray pipe.

[0007] On the basis of the above scheme, the liquid supply assembly comprises: A first water pump, three of which are arranged on one side of the tower body, and the three first water pumps correspond to the three connecting pipes one by one; A water pumping pipe connected between the slurry area and an input end of the first water pump; a liquid supply pipe, the liquid supply pipe being connected between the output end of the first water pump and the connecting pipe; The filter cartridge is detachably mounted at positions in the tower body that are respectively connected to the three water pumping pipes.

[0008] Based on the above solution, the discharge assembly includes: A blower, wherein the blower is arranged at the air outlet of the exhaust pipe, and the input end of the blower is connected to the exhaust pipe; An exhaust pipe, wherein the output end of the blower is connected to the exhaust pipe; A second water pump, two of which are arranged on one side of the tower body; A slurry inlet pipe is connected between the input ends of the two second water pumps and the tower body, and the position where the slurry inlet pipe is connected to the tower body is lower than the position where the water pump is connected to the tower body; A valve, the valve being fixedly installed on the slurry inlet pipe and the supply pipeline; A discharge pipe, the output ends of the two second water pumps are both connected to the discharge pipe.

[0009] On the basis of the above scheme, the gas stirring assembly comprises: A support frame, wherein the support frame is fixedly mounted on the inner bottom wall of the tower body, and the support frame and the inner bottom wall of the tower body are sealed; A rotating frame, the rotating frame is rotatably and sealingly mounted on the supporting frame; A docking tube, the docking tube is fixedly mounted on the bottom of the rotating frame; A scraper frame, wherein a plurality of scrapers are connected in a circular shape at equal angles on the rotating frame, and the scraper frames are in sliding contact with the supporting frame; An arc frame, each two of the scraper frames are connected with the arc frame, and the arc frame is in sliding contact with the support frame; An arc-shaped scraper, each of the scraper frames is fixedly mounted with the arc-shaped scraper, and the arc-shaped scraper is in sliding contact with the support frame; An air supply part, which is installed on the docking tube and is used to supply air to the scraper frame and the arc frame; A driving unit is installed inside the supporting frame and is used to drive the rotating frame to rotate.

[0010] On the basis of the above scheme, the gas supply unit comprises: A first-stage spray head, each of the arc-shaped frames is inclined at equal angles in a circle with the rotating frame as the center and is connected with a plurality of the first-stage spray heads; Secondary spray heads, with a plurality of secondary spray heads being connected at equal distances on both sides of each scraper frame; A rotary joint, the bottom of the docking tube rotates and is sealed and connected to the rotary joint; an air supply pipe, the air supply pipe being in communication with the rotary joint; An air pump is arranged on one side of the tower body, and an output end of the air pump is connected to the air supply pipe.

[0011] On the basis of the above scheme, the driving unit comprises: A motor, wherein the motor is fixedly mounted on the inner bottom wall of the tower body; A driving gear, the output end of the motor is fixedly mounted with the driving gear; A gear ring is fixedly mounted on the bottom of the docking tube and is meshed with the driving gear.

[0012] Based on the above solution, the flue gas cooling component includes: An annular tube, a plurality of the annular tubes are fixedly installed at equal distances inside the flue gas pipeline; A water pipe, the water pipe is fixedly installed on the flue gas pipeline, and the water pipe is connected with the plurality of annular pipes; Sprinkler heads, each of the annular tubes is connected with a plurality of sprinkler heads at equal distances; A water supply unit, which is installed on the water pipe and is used for supplying water; A drainage part is installed at the bottom of the flue gas pipeline and is used to drain water back to the water supply part.

[0013] On the basis of the above scheme, the water supply unit includes: A water storage tank, wherein the water storage tank is arranged on the side of the tower body; a third water pump, the third water pump being arranged on a side of the water storage tank; A water supply pipe, wherein the output end of the third water pump is connected to the water pipe; A water inlet pipe, wherein the water inlet pipe is connected to the input end of the third water pump, and the other end of the water inlet pipe is located at the bottom of the water storage tank.

[0014] On the basis of the above scheme, the drainage part comprises: A drainage box, the drainage box is fixedly installed on the top of the water storage tank, and the drainage box is connected to the bottom of the flue gas pipeline; Drainage grooves, a plurality of drainage grooves are provided at equal distances at the bottom of the drainage box; A filter screen plate, wherein a plurality of the filter screen plates are installed at equal distances and at an angle inside the drainage box; A sealing groove, wherein one side of the drainage box is provided with the sealing groove; A sealing plate is detachably mounted in the sealing groove, the sealing plate is in sealing contact with the drainage box, and the sealing plate is in contact with one side of the plurality of filter screen plates.

[0015] The working principle and beneficial effects of the present invention are: 1. In the present invention, the alkaline solution entering the connecting pipe will fill the inside of each spray pipe, and the alkaline solution entering the spray pipe will enter the inside of the discharge joint and be sprayed out in the form of mist through the first spray head. Since the three connecting pipes are staggered, the first spray heads at the bottom of the multiple discharge joints of the upper stage will correspond to the first spray heads at the top of the multiple discharge joints of the lower stage, so that the sprayed alkaline solution will have convection, thereby improving the efficiency of the reaction with the high-temperature flue gas and ensuring the desulfurization efficiency.

[0016] 2. In the present invention, the rotating frame drives the scraper frame to rotate, and the scraper frame drives the arc frame and the arc scraper to rotate respectively, so as to clean the top of the support frame in all directions, avoid sediment deposition on the support frame, reduce the possibility of sediment agglomeration, and improve the stability of the equipment during use.

[0017] 3. In the present invention, the first-stage nozzle and the second-stage nozzle are turned on during the rotation of the rotating frame to stir the precipitate. Through the setting of the nozzle, while stirring the slurry and the precipitate, the possibility of the precipitate adhering to the arc scraper can be reduced, thereby reducing the possibility of the arc scraper being corroded. The setting of the second-stage nozzle can greatly improve the stirring efficiency and facilitate the discharge of waste liquid.

[0018] 4. In the present invention, water is discharged into the annular pipe. At this time, the water spray head is turned on to spray water on the high-temperature flue gas entering the flue gas pipeline to reduce the temperature and dust content of the flue gas. The sprayed water will enter the water storage tank again for circulation after being treated. The lower temperature can reduce the consumption of desulfurizer and the wear of equipment, and can also avoid the by-products produced in the desulfurization process from causing harm to the human body and the environment.

[0019] 5. In the present invention, by setting up a multi-stage spraying component, convection of the sprayed alkaline solution can occur during the desulfurization process, thereby improving the desulfurization effect on the flue gas. By setting up a gas stirring component, the possibility of the precipitate generated during the desulfurization process accumulating in the slurry area can be reduced, reducing the damage of the precipitate to the equipment, and facilitating the recovery and treatment of the precipitate. By cooperating with the flue gas cooling component, the temperature of the flue gas entering the tower body can be reduced, and the flue gas can be softened to make it relatively mild, thereby reducing the reaction pressure with the alkaline slurry during flue gas desulfurization, extending the service life of the equipment, reducing the dust concentration, reducing the wear of the dust on the equipment and facilities, and improving the utilization rate of the desulfurizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a schematic diagram of the overall structure from another angle in the present invention; Figure 3 It is a schematic diagram of a three-dimensional structure in cross section in the present invention; Figure 4 It is a cross-sectional structural schematic diagram of the cooperation between the multi-stage spray assembly and the liquid supply assembly in the present invention; Figure 5 It is a structural schematic diagram of the multi-stage spray assembly in the present invention; Figure 6 It is a schematic cross-sectional structural diagram of the gas stirring assembly in the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the cooperation between the driving part and the gas stirring assembly in the present invention; Figure 8 It is a cross-sectional structural schematic diagram of the cooperation between the driving part and the air supply part in the present invention; Fig. 9 It is a cross-sectional structural schematic diagram of the flue gas cooling component in the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the drainage part in the present invention; Fig.11 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] The numbers in the figure represent: 1. tower body; 2. flue gas pipeline; 3. exhaust pipeline; 4. supply pipeline; 5. connecting pipe; 6. spray pipe; 7. discharge joint; 8. first spray head; 9. demister; 10. first water pump; 11. water suction pipe; 12. liquid supply pipe; 13. filter cartridge; 14. blower; 15. exhaust pipe; 16. second water pump; 17. slurry inlet pipe; 18. valve; 19. discharge pipe; 20. support frame; 21. rotating frame; 22. docking tube; 23. scraper frame ; 24. Arc frame; 25. Arc scraper; 26. First-stage nozzle; 27. Second-stage nozzle; 28. Rotary joint; 29. ​​Air supply pipe; 30. Air pump; 31. Motor; 32. Driving gear; 33. Gear ring; 34. Ring pipe; 35. Water pipe; 36. Spray head; 37. Water storage tank; 38. Third water pump; 39. Water supply pipe; 40. Water inlet pipe; 41. Drain box; 42. Drain trough; 43. Filter screen; 44. Sealing groove; 45. Sealing plate; 46. Trough body. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figures 1 to 11 As shown, this embodiment proposes a boiler wet desulfurization equipment, including a tower body 1, the interior of the tower body 1 is set as a slurry area and a spray area, including a multi-stage spray component, a liquid supply component, a flue gas pipeline 2, an exhaust pipeline 3, a discharge component, a gas stirring component, a flue gas cooling component and a supply pipeline 4, the multi-stage spray component is installed inside the spray area for spraying slurry, the multi-stage spray component includes a connecting pipe 5, a spray pipe 6, a discharge joint 7, a first spray head 8 and a demister 9, three connecting pipes 5 are fixedly installed at equal distances inside the slurry area, the three connecting pipes 5 are staggered, and multiple spray pipes 6 are connected to the three connecting pipes 5 at equal distances, and multiple discharge joints 7 are connected to each other at equal distances on both sides of each spray pipe 6, and the lower ends of the discharge joints 7 of the multiple spray pipes 6 located at the top are connected to multiple first spray heads 8, and the upper and lower ends of the other multiple discharge joints 7 are connected to the first spray heads 8, and the demister 9 is fixedly installed inside the tower body 1, and the demister 9 is located at the upper part of the spray pipe 6.

[0025] Specifically, when the boiler flue gas is desulfurized, the boiler flue gas is first discharged into the flue gas pipeline 2. After entering the flue gas pipeline 2, the boiler flue gas will flow to the position of the exhaust pipe 3 under the action of the discharge component. During this process, the flue gas cooling component is turned on to cool the high-temperature flue gas and reduce the dust concentration. At this time, the liquid supply component is turned on to add alkaline solution to the inside of the three connecting pipes 5. The alkaline solution entering the connecting pipe 5 will fill the inside of each spray pipe 6. The alkaline solution entering the spray pipe 6 will enter the inside of the discharge joint 7 and be sprayed out in the form of mist through the first spray head 8. The connecting pipes 5 are arranged in a staggered manner, and the first spray heads 8 at the bottom of the multiple discharge joints 7 of the upper stage correspond to the first spray heads 8 at the top of the multiple discharge joints 7 of the lower stage, so that the sprayed alkaline solutions interact with each other, thereby improving the efficiency of the reaction with the high-temperature flue gas. At the same time, the supply pipeline 4 is connected to the slurry preparation equipment to transport the alkaline slurry into the tower body 1 to ensure the desulfurization quality. The precipitate generated during the desulfurization process will be precipitated inside the tower body 1. The gas stirring component is set to avoid the accumulation of precipitate. At this time, the precipitate can be sucked away by the setting of the discharge component.

[0026] like Figures 3 to 5 As shown, the liquid supply component is installed in the slurry area, and is used to provide slurry to the multi-stage spray component. The liquid supply component includes a first water pump 10, a water suction pipe 11, a liquid supply pipe 12 and a filter cartridge 13. Three first water pumps 10 are arranged on one side of the tower body 1. The three first water pumps 10 correspond to the three connecting pipes 5 one by one. The water suction pipe 11 is connected between the slurry area and the input end of the first water pump 10, and the liquid supply pipe 12 is connected between the output end of the first water pump 10 and the connecting pipe 5. The filter cartridges 13 are detachably installed at the positions in the tower body 1 that are respectively connected to the three water suction pipes 11.

[0027] Specifically, when the alkaline solution is transported to the inside of the connecting pipe 5, the first water pump 10 is turned on. The first water pump 10 extracts the alkaline solution in the slurry area through the pumping pipe 11, and transports the alkaline solution into the connecting pipe 5 through the setting of the liquid supply pipe 12. The setting of the filter cartridge 13 can prevent sediment from entering the pumping pipe 11, thereby blocking the first water pump 10 and the first spray head 8, thereby improving the stability during spraying.

[0028] like Figure 2 , Figure 3 As shown, the flue gas pipeline 2 is fixedly installed on the tower body 1, the flue gas pipeline 2 is connected to the tower body 1, and the connecting position of the flue gas pipeline 2 and the tower body 1 is located between the spraying area and the slurry area. The exhaust pipe 3 is connected to the top of the tower body 1, and the discharge component is installed at the air outlet of the exhaust pipe 3 to discharge the treated flue gas and the invalid slurry. The discharge component includes a blower 14, an exhaust pipe 15, a second water pump 16, a slurry inlet pipe 17, a valve 18 and a discharge pipe 19. The blower 14 is arranged in the exhaust pipe 3 The air outlet of the tower body 1 is connected to the input end of the blower 14 and the exhaust pipe 3, and the output end of the blower 14 is connected to the exhaust pipe 15. Two second water pumps 16 are arranged on one side of the tower body 1, and a slurry inlet pipe 17 is connected between the input ends of the two second water pumps 16 and the tower body 1. The position where the slurry inlet pipe 17 is connected to the tower body 1 is lower than the connection position between the pumping pipe 11 and the tower body 1. Valves 18 are fixedly installed on the slurry inlet pipe 17 and the supply pipeline 4, and the output ends of the two second water pumps 16 are connected to the discharge pipe 19.

[0029] Specifically, during the process of desulfurization of boiler flue gas, the blower 14 is turned on, and the air in the exhaust pipe is extracted by the blower 14, so that the desulfurized flue gas is sucked into the exhaust pipe 3, and discharged into the next link through the exhaust pipe 15. At the same time, the second water pump 16 is turned on, and the second water pump 16 extracts the slurry mixed with a large amount of sediment through the slurry inlet pipe 17, and discharges it into the discharge pipe 19, and then the slurry in the discharge pipe 19 is transported to the designated position, and the sediment can be recovered.

[0030] like Figures 6 to 8As shown, the gas stirring assembly is installed on the inner bottom wall of the tower body 1 and is used to stir the slurry. The gas stirring assembly includes a support frame 20, a rotating frame 21, a docking tube 22, a scraper frame 23, an arc frame 24, an arc scraper 25, a gas supply part and a driving part. The support frame 20 is fixedly installed on the inner bottom wall of the tower body 1. The support frame 20 and the inner bottom wall of the tower body 1 are sealed. The rotating frame 21 is rotated and sealed on the support frame 20. The bottom of the rotating frame 21 is fixedly installed with a docking tube 22. The rotating frame 21 is round There are multiple scraper frames 23 connected at equal angles in a circumference, and the scraper frames 23 are in sliding contact with the support frame 20. An arc frame 24 is connected between every two scraper frames 23, and the arc frame 24 is in sliding contact with the support frame 20. An arc scraper 25 is fixedly installed on each scraper frame 23, and the arc scraper 25 is in sliding contact with the support frame 20. The air supply part is installed on the docking tube 22, which is used to supply air to the scraper frames 23 and the arc frames 24. The driving part is installed inside the support frame 20, and is used to drive the rotating frame 21 to rotate.

[0031] Specifically, in order to reduce the accumulation of sediment inside the tower body 1, the slurry in the slurry area needs to be stirred. At this time, the driving unit is started, and the driving unit drives the rotating frame 21 to rotate on the support frame 20, thereby driving the scraper frame 23 to rotate. The scraper frame 23 drives the arc frame 24 and the arc scraper 25 to rotate respectively, thereby performing an all-round cleaning on the top of the support frame 20 to prevent sediment from being deposited on the support frame 20. In addition, through the setting of the air supply unit, gas is used to stir the slurry and sediment, which reduces the possibility of sediment agglomeration and improves the stability of the equipment during use.

[0032] The above, such as Figure 6 , Figure 8 As shown, the air supply part includes a primary nozzle 26, a secondary nozzle 27, a rotary joint 28, an air supply pipe 29 and an air pump 30. Each arc frame 24 is centered on the rotating frame 21 and is inclined at equal angles in a circle and connected with multiple primary nozzles 26. Both sides of each scraper frame 23 are connected with multiple secondary nozzles 27 at equal distances. The bottom of the docking tube 22 is rotatably and sealedly connected with a rotary joint 28. The air supply pipe 29 is connected with the rotary joint 28. The air pump 30 is arranged on one side of the tower body 1, and the output end of the air pump 30 is connected with the air supply pipe 29.

[0033] Specifically, when bubbles are used to stir the precipitate and the slurry, the air pump 30 is turned on. The air pump 30 delivers air to the rotary joint 28 through the air supply pipe 29. The gas enters the interior of the docking tube 22 and enters the interior of the multiple scraper frames 23 through the rotating frame 21. The gas entering the scraper frame 23 enters the arc frame 24. At this time, the first-level nozzle 26 and the second-level nozzle 27 are turned on to stir the precipitate. Through the setting of the first-level nozzle 26, while stirring the slurry and the precipitate, the possibility of the precipitate adhering to the arc scraper 25 can be reduced, thereby reducing the possibility of the arc scraper 25 being corroded. The setting of the second-level nozzle 27 can greatly improve the stirring efficiency and facilitate the discharge of waste liquid.

[0034] The above, such as Figure 7 , Figure 8 As shown, the driving part includes a motor 31, a driving gear 32 and a gear ring 33. The motor 31 is fixedly mounted on the inner bottom wall of the tower body 1, the driving gear 32 is fixedly mounted on the output end of the motor 31, and the gear ring 33 is fixedly mounted on the bottom of the docking tube 22, and the gear ring 33 is meshed with the driving gear 32.

[0035] Specifically, when driving the rotating frame 21 to rotate, the motor 31 is started, the motor 31 drives the driving gear 32 to rotate, the driving gear 32 drives the gear ring 33 to rotate, and the gear ring 33 drives the docking tube 22 to rotate, so that the rotating frame 21 can be driven to rotate. Since a groove 46 is also provided between the support frame 20 and the tower body 1, the groove 46 can be used for heat dissipation of the motor 31 and for wiring.

[0036] like Fig. 9 As shown, the flue gas cooling component is installed inside the flue gas pipeline 2, and is used to cool the high-temperature flue gas. The supply pipeline 4 is connected to the tower body 1. The flue gas cooling component includes an annular pipe 34, a water pipe 35, a sprinkler head 36, a water supply part and a drainage part. A plurality of annular pipes 34 are fixedly installed at equal distances inside the flue gas pipeline 2. The water pipe 35 is fixedly installed on the flue gas pipeline 2. The water pipe 35 is connected to the plurality of annular pipes 34. Each annular pipe 34 is connected to a plurality of sprinkler heads 36 at equal distances. The water supply part is installed on the water pipe 35 for water supply, and the drainage part is installed at the bottom of the flue gas pipeline 2 for draining water back to the water supply part.

[0037] Specifically, after the boiler flue gas enters the flue gas pipeline 2, before it is desulfurized, the flue gas is sprayed with water for treatment, which can achieve the purpose of pre-treating the flue gas, absorb the heat in the flue gas, reduce the temperature of the flue gas, make the subsequent desulfurization process safer and more effective, and reduce the dust concentration. At this time, the water supply part is turned on, and the water supply part supplies water to the water pipe 35, and then discharges the water into the annular pipe 34. At this time, the water spray head 36 is turned on to spray the high-temperature flue gas with water to reduce the temperature and dust content of the flue gas, and the sprayed water will enter the drainage part, and the treated water will enter the water storage tank 37 again for circulation.

[0038] The above, such as Figure 1 As shown, the water supply part includes a water storage tank 37, a third water pump 38, a water supply pipe 39 and a water inlet pipe 40. The water storage tank 37 is arranged on the side of the tower body 1, and the third water pump 38 is arranged on the side of the water storage tank 37. The water supply pipe 39 is connected between the output end of the third water pump 38 and the water pipe 35. The water inlet pipe 40 is connected to the input end of the third water pump 38, and the other end of the water inlet pipe 40 is located at the bottom of the water storage tank 37.

[0039] Specifically, when supplying water, the third water pump 38 is started, the third water pump 38 draws water from the water storage tank 37 through the water inlet pipe 40, and sends the water into the water supply pipe 39. The water can be sent into the water pipe 35 through the water supply pipe 39.

[0040] The above, such as Fig.10 As shown, the drainage part includes a drainage box 41, a drainage groove 42, a filter screen plate 43, a sealing groove 44 and a sealing plate 45. The drainage box 41 is fixedly installed on the top of the water storage tank 37. The drainage box 41 is connected to the bottom of the flue gas pipeline 2. A plurality of drainage grooves 42 are equidistantly provided at the bottom of the drainage box 41. A plurality of filter screen plates 43 are equidistantly and obliquely installed inside the drainage box 41. A sealing groove 44 is provided on one side of the drainage box 41. The sealing plate 45 is detachably installed in the sealing groove 44. The sealing plate 45 is sealed and abutted against the drainage box 41. The sealing plate 45 abuts against one side of the plurality of filter screen plates 43.

[0041] Specifically, the water sprayed from the sprinkler head 36 will enter the interior of the drainage box 41. At this time, the sealing plate 45 is sealed and installed on the sealing groove 44. The water entering the drainage box 41 will be filtered by multiple filter screens 43 in turn, and finally gathered at the bottom of the drainage box 41. At this time, it can flow back to the water storage tank 37 through the drainage groove 42. After working for a period of time, the filter screen 43 needs to be cleaned. At this time, you only need to pull the sealing plate 45 out from the top of the sealing groove 44 to expose the filter screen 43 to the outside, and rinse with water or use other methods to clean the filter screen 43. After cleaning, the sealing plate 45 can be installed back into the sealing groove 44.

[0042] In summary, when the boiler flue gas is desulfurized, the boiler flue gas is first discharged into the flue gas pipeline 2. During the process of desulfurizing the boiler flue gas, the blower 14 is turned on to extract the air in the exhaust pipe, thereby sucking the desulfurized flue gas into the exhaust pipe 3 and discharging it into the next link through the exhaust pipe 15. When the high-temperature flue gas passes through the flue gas pipeline 2, the third water pump 38 is started. The third water pump 38 extracts water from the water storage tank 37 through the water inlet pipe 40 and sends the water to the water supply pipe 39. Pipe 39 can deliver water into the water pipe 35, and then discharge the water into the annular pipe 34. At this time, turn on the water spray head 36 to spray water on the high-temperature flue gas to reduce the temperature and dust content of the flue gas, and the sprayed water will enter the drainage box 41. At this time, the sealing plate 45 is sealed on the sealing groove 44. The water entering the drainage box 41 will be filtered by multiple filter screens 43 in turn, and finally gathered at the bottom of the drainage box 41. At this time, it can flow back to the water storage tank 37 through the drainage groove 42 for circulation.

[0043] That is, after the boiler flue gas enters the flue gas pipeline 2, before it is desulfurized, the flue gas is sprayed with water for treatment, which can achieve the purpose of pre-treating the flue gas, absorb the heat in the flue gas, reduce the temperature of the flue gas, make the subsequent desulfurization process safer and more effective, and reduce the dust concentration, soften the boiler flue gas, and facilitate its desulfurization.

[0044] When the flue gas enters the tower body 1, the first water pump 10 is turned on. The first water pump 10 extracts the alkaline solution in the slurry area through the water pumping pipe 11, and transports the alkaline solution into the connecting pipe 5 through the setting of the liquid supply pipe 12. The setting of the filter cartridge 13 can prevent the sediment from entering the water pumping pipe 11, thereby blocking the first water pump 10 and the first spray head 8, and improving the stability during spraying. The alkaline solution can be added to the inside of the three connecting pipes 5. The alkaline solution entering the connecting pipe 5 will fill the inside of each spray pipe 6. The alkaline solution entering the spray pipe 6 will enter the inside of the discharge joint 7 and be sprayed out in the form of mist through the first spray head 8. The three connecting pipes 5 are arranged alternately, and the first spray heads 8 at the bottom of the multiple discharge joints 7 of the upper stage correspond to the first spray heads 8 at the top of the multiple discharge joints 7 of the lower stage, so that the sprayed alkaline solutions interact with each other, thereby improving the efficiency of the reaction with the high-temperature flue gas. At the same time, the supply pipeline 4 is connected to the slurry preparation equipment to transport the alkaline slurry into the tower body 1 to ensure the desulfurization quality. At the same time, the second water pump 16 is turned on, and the second water pump 16 extracts the slurry mixed with a large amount of precipitate through the slurry inlet pipe 17 and discharges it into the discharge pipe 19, and then the slurry in the discharge pipe 19 is transported to the designated position to recover the precipitate.

[0045] In order to reduce the accumulation of sediment inside the tower body 1, it is necessary to stir the slurry in the slurry area. At this time, the motor 31 is started, and the motor 31 drives the driving gear 32 to rotate, and the driving gear 32 drives the gear ring 33 to rotate, so that the gear ring 33 drives the docking tube 22 to rotate, and the rotating frame 21 is driven to rotate, thereby driving the scraper frame 23 to rotate, and the scraper frame 23 drives the arc frame 24 and the arc scraper 25 to rotate respectively, so as to clean the top of the support frame 20 in all directions to prevent sediment from being deposited on the support frame 20. At this time, the air pump 30 is turned on, and the air pump 30 delivers air to the rotary joint 28 through the air supply pipe 29. The gas enters the interior of the docking tube 22 and enters the interior of the multiple scraper frames 23 through the rotating frame 21. The gas entering the scraper frame 23 enters the arc frame 24. At this time, the first-level nozzle 26 and the second-level nozzle 27 are turned on to stir the precipitate. Through the setting of the first-level nozzle 26, while stirring the slurry and the precipitate, the possibility of the precipitate adhering to the arc scraper 25 can be reduced, thereby reducing the possibility of the arc scraper 25 being corroded. The setting of the second-level nozzle 27 can greatly improve the stirring efficiency, facilitate the discharge of waste liquid, reduce the possibility of precipitate agglomeration, and improve the stability of the equipment during use.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler wet desulfurization device, comprising a tower body (1), wherein the interior of the tower body (1) is configured as a slurry area and a spraying area, characterized in that: Also includes: A multi-stage spray assembly, which is installed inside the spray area and is used for spraying slurry; A liquid supply assembly, the liquid supply assembly being installed in the slurry area and used for providing slurry to the multi-stage spray assembly; A flue gas pipeline (2), the flue gas pipeline (2) being fixedly mounted on the tower body (1), the flue gas pipeline (2) being connected to the tower body (1), and the connecting position of the flue gas pipeline (2) and the tower body (1) being located between the spraying area and the slurry area; An exhaust pipeline (3), the exhaust pipeline (3) being connected to the top of the tower body (1); An exhaust component, the exhaust component is installed at the air outlet of the exhaust pipeline (3) and is used to discharge the treated smoke and the spent slurry; A gas stirring assembly, the gas stirring assembly being mounted on the inner bottom wall of the tower body (1) and being used for stirring the slurry; A flue gas cooling component, the flue gas cooling component being installed inside the flue gas pipeline (2) and being used to cool the high-temperature flue gas; A supply pipeline (4), wherein the supply pipeline (4) is connected to the tower body (1).

2. A boiler wet desulfurization equipment according to claim 1, characterized in that: The multi-stage spray assembly comprises: Connecting pipes (5), three connecting pipes (5) are fixedly installed at equal distances inside the slurry area, and the three connecting pipes (5) are arranged in a staggered manner; Spray pipes (6), a plurality of the spray pipes (6) being connected to the three connecting pipes (5) at equal distances; A discharge joint (7), with a plurality of discharge joints (7) being connected at equal distances on both sides of each of the spray pipes (6); A first spray head (8), wherein the lower ends of the discharge joints (7) of the plurality of spray pipes (6) located at the top are all connected to the plurality of first spray heads (8), and the upper and lower ends of the other plurality of discharge joints (7) are all connected to the first spray heads (8); A demister (9), wherein the demister (9) is fixedly mounted inside the tower body (1), and the demister (9) is located at the upper part of the spray pipe (6).

3. A boiler wet desulfurization equipment according to claim 2, characterized in that: The liquid supply assembly comprises: A first water pump (10), wherein three of the first water pumps (10) are arranged on one side of the tower body (1), and the three first water pumps (10) correspond one to one to the three connecting pipes (5); A water pumping pipe (11), the water pumping pipe (11) being connected between the slurry area and an input end of the first water pump (10); a liquid supply pipe (12), the liquid supply pipe (12) being connected between the output end of the first water pump (10) and the connecting pipe (5); A filter cartridge (13) is detachably mounted at each of the locations in the tower body (1) that are respectively connected to the three water extraction pipes (11).

4. A boiler wet desulfurization equipment according to claim 3, characterized in that: The discharge assembly comprises: a blower (14), the blower (14) being arranged at the air outlet of the exhaust pipe (3), and the input end of the blower (14) being in communication with the exhaust pipe (3); an exhaust pipe (15), wherein the output end of the blower (14) is connected to the exhaust pipe (15); A second water pump (16), two second water pumps (16) being arranged on one side of the tower body (1); A slurry inlet pipe (17), wherein the input ends of the two second water pumps (16) are connected to the tower body (1) via the slurry inlet pipe (17), and the position at which the slurry inlet pipe (17) is connected to the tower body (1) is lower than the position at which the water pumping pipe (11) is connected to the tower body (1); A valve (18), the valve (18) being fixedly mounted on the slurry inlet pipe (17) and the supply pipeline (4); A discharge pipe (19), wherein the output ends of the two second water pumps (16) are both in communication with the discharge pipe (19).

5. A boiler wet desulfurization equipment according to claim 4, characterized in that: The gas stirring assembly comprises: A support frame (20), the support frame (20) being fixedly mounted on the inner bottom wall of the tower body (1), the support frame (20) and the inner bottom wall of the tower body (1) being sealed; A rotating frame (21), the rotating frame (21) being rotatably and sealingly mounted on the supporting frame (20); A docking tube (22), the docking tube (22) being fixedly mounted on the bottom of the rotating frame (21); A scraper frame (23), wherein a plurality of the scraper frames (23) are connected to the rotating frame (21) in a circular shape and at equal angles, and the scraper frames (23) are in sliding contact with the support frame (20); An arc frame (24), wherein each two of the scraper frames (23) are connected to each other by the arc frame (24), and the arc frame (24) is in sliding contact with the support frame (20); An arc-shaped scraper (25), each of the scraper frames (23) being fixedly mounted with the arc-shaped scraper (25), the arc-shaped scraper (25) being in sliding contact with the support frame (20); An air supply part, the air supply part is mounted on the docking tube (22) and is used to supply air to the scraper frame (23) and the arc frame (24); A driving unit, the driving unit is installed inside the support frame (20) and is used to drive the rotating frame (21) to rotate.

6. A boiler wet desulfurization equipment according to claim 5, characterized in that: The air supply unit comprises: A first-stage spray head (26), each of the arc-shaped frames (24) is inclined at equal angles in a circle with the rotating frame (21) as the center and is connected to a plurality of the first-stage spray heads (26); Secondary spray heads (27), with a plurality of secondary spray heads (27) being connected at equal distances on both sides of each scraper frame (23); A rotary joint (28), the bottom of the docking tube (22) is rotatably and sealingly connected to the rotary joint (28); an air supply pipe (29), the air supply pipe (29) being in communication with the rotary joint (28); An air pump (30), the air pump (30) being arranged on one side of the tower body (1), and the output end of the air pump (30) being in communication with the air supply pipe (29).

7. A boiler wet desulfurization equipment according to claim 6, characterized in that: The driving unit comprises: A motor (31), the motor (31) being fixedly mounted on the inner bottom wall of the tower body (1); A driving gear (32), the driving gear (32) being fixedly mounted on the output end of the motor (31); A gear ring (33) is fixedly mounted on the bottom of the docking tube (22), and the gear ring (33) is meshed with the driving gear (32).

8. A boiler wet desulfurization equipment according to claim 7, characterized in that: The flue gas cooling component comprises: annular tubes (34), a plurality of the annular tubes (34) being fixedly installed at equal intervals inside the flue gas pipeline (2); a water pipe (35), the water pipe (35) being fixedly mounted on the flue gas pipeline (2), the water pipe (35) being in communication with the plurality of annular pipes (34); A water spray head (36), wherein each of the annular tubes (34) is connected to a plurality of the water spray heads (36) at equal distances; a water supply unit, the water supply unit being installed on the water pipe (35) and being used for supplying water; A drainage part, which is installed at the bottom of the flue gas pipeline (2) and is used to drain water back to the water supply part.

9. A boiler wet desulfurization equipment according to claim 8, characterized in that: The water supply unit comprises: a water storage tank (37), the water storage tank (37) being arranged on a side of the tower body (1); a third water pump (38), the third water pump (38) being arranged on a side of the water storage tank (37); a water supply pipe (39), wherein the water supply pipe (39) is connected between the output end of the third water pump (38) and the water passage pipe (35); A water inlet pipe (40), the water inlet pipe (40) being connected to the input end of the third water pump (38), and the other end of the water inlet pipe (40) being located at the bottom of the water storage tank (37).

10. A boiler wet desulfurization equipment according to claim 9, characterized in that: The drainage part comprises: A drainage box (41), the drainage box (41) being fixedly mounted on the top of the water storage tank (37), the drainage box (41) being in communication with the bottom of the flue gas pipeline (2); Drainage grooves (42), a plurality of drainage grooves (42) are provided at equal intervals on the bottom of the drainage box (41); A filter screen plate (43), wherein a plurality of the filter screen plates (43) are installed at equal distances and at an angle inside the drainage box (41); A sealing groove (44), wherein one side of the drainage box (41) is provided with the sealing groove (44); A sealing plate (45), the sealing plate (45) being detachably mounted in the sealing groove (44), the sealing plate (45) being sealingly abutted against the drainage box (41), and the sealing plate (45) being abutted against one side of the plurality of filter screen plates (43).

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