Flue gas desulfurization tower

Abstract

The invention discloses a flue gas desulfurization tower, and belongs to the field of flue gas desulfurization equipment. A flue gas desulfurization tower comprises a desulfurization tower body, one side of the bottom of the desulfurization tower body is fixedly communicated with a first gas pipe, the top of the desulfurization tower body is fixedly communicated with a second gas pipe, and the flue gas desulfurization tower further comprises an isolation assembly used for prolonging the reaction time of flue gas and a desulfurization agent, the isolation assembly comprises a first partition plate and a second partition plate arranged above the first partition plate. The dehumidifying assembly is used for filtering the desulfurized flue gas and comprises a filter box and filter cotton arranged in the filter box, and the desulfurizing tower body is communicated with the filter box through a second gas pipe; according to the invention, the retention time of flue gas in the desulfurization tower body can be prolonged, the spraying desulfurization treatment time of the flue gas in the desulfurization tower body can be prolonged as much as possible, and the desulfurization effect of the flue gas is ensured; the full mixing reaction of the flue gas and the desulfurizing agent solution is promoted, and the desulfurization treatment effect of the flue gas is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas desulfurization equipment, and in particular to a flue gas desulfurization tower. Background Art

[0002] At present, most power plants still use coal as the main fuel for power generation. Coal-fired boilers are the main source of SO2 emissions, an atmospheric pollutant. Therefore, it is particularly urgent and necessary to increase the control of SO2 in thermal power plants. Flue gas desulfurization (FGD) is currently one of the most effective ways to control SO2 emissions from coal-fired boilers. Industrial flue gas desulfurization technology can be divided into three categories: dry, wet and semi-dry. Among them, the wet limestone-gypsum desulfurization process accounts for about 90% of the desulfurization devices under construction and already built worldwide, and it dominates the existing flue gas desulfurization technology.

[0003] The wet limestone-gypsum method uses limestone slurry as a desulfurizing agent, sprays and washes the flue gas in the desulfurization tower, reacts with SO2 in the flue gas to generate CaSO3, and simultaneously blows oxygen into the slurry in the desulfurization tower to oxidize CaSO3 into CaSO4 precipitation, i.e. gypsum. This method can achieve a flue gas desulfurization rate of more than 90% for coal-fired boilers. In the entire desulfurization process, the cost of limestone accounts for about 17% of the total cost of the entire desulfurization process. However, limestone is a natural mineral resource with limited reserves. Mining limestone will not only damage the ecology, but also the cost of limestone from mining, transportation to processing to meet the requirements of the desulfurization process is high.

[0004] In the existing desulfurization process, after the flue gas is sent into the desulfurization tower through the air inlet pipe, the flue gas rises by its own buoyancy and mixes with the desulfurizer, and the desulfurizer sprays downward. The two directions are opposite, resulting in that the flue gas and the desulfurizer cannot be completely mixed with the air. However, the desulfurization process requires a long mixing time for a full reaction, which affects the working efficiency of the desulfurization tower.

[0005] In addition, after the flue gas reacts with the desulfurizer liquid and is discharged through the exhaust pipe, the humidity is relatively high, which is not conducive to the recovery of the gas after desulfurization. Summary of the invention

[0006] The purpose of the present invention is to solve the problem in the prior art that flue gas and desulfurizer cannot be completely mixed with air and cannot fully react, which affects the working efficiency of the desulfurization tower, and to propose a flue gas desulfurization tower and a monitoring method.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A flue gas desulfurization tower comprises a desulfurization tower body, a first air pipe is fixedly connected to one side of the bottom of the desulfurization tower body, a second air pipe is fixedly connected to the top of the desulfurization tower body, and further comprises: an isolation component for extending the reaction time of flue gas and desulfurizer, the isolation component comprises a first partition and a second partition arranged above the first partition; a dehumidification component for filtering the desulfurized flue gas, the dehumidification component comprises a filter box and filter cotton arranged in the filter box, and the desulfurization tower body is connected to the filter box through the second air pipe.

[0009] Preferably, the first partition is rotatably arranged at the bottom of the desulfurization tower body, and a rotating shaft is fixedly connected inside the first partition. First through holes are equidistantly opened in a ring shape inside the first partition. A motor is transmission-connected to the bottom of the rotating shaft. A support leg is fixedly installed at the bottom of the desulfurization tower body, and the motor is fixedly installed on one side of the support leg.

[0010] In order to allow the flue gas to fully react with the desulfurizer in the desulfurization tower body, further, the surface of the rotating shaft is symmetrically connected with wind plates located below the first partition, and the wind plates are provided with through holes.

[0011] Preferably, two groups of second springs are symmetrically arranged on the inner wall of the desulfurization tower body, the second partition is connected to the bottom of the two groups of second springs, a second through hole is opened in the second partition, a top rod is fixedly installed on one side of the upper surface of the first partition, and the top rod is fitted with the bottom surface of the second partition.

[0012] Preferably, two groups of cylinders are symmetrically arranged on the filter box, the telescopic rod ends of the cylinders extend into the filter box and are connected to a pressure plate, a support plate is fixedly installed on the bottom surface of the filter box, the filter cotton is fitly arranged between the pressure plate and the support plate, and two groups of drain pipes are symmetrically arranged at the bottom of the desulfurization tower body, the filter box is connected to the drain pipe through a third air pipe, and a one-way valve is arranged in the drain pipe.

[0013] In order to recycle the desulfurizer solution generated by dehumidification, the dehumidification component further includes a filter barrel, which is connected to the filter box, and the bottom of the filter barrel is connected to a connecting pipe. Two groups of support plates are symmetrically arranged on the outer wall of the desulfurization tower body, and a guide rod is slidably installed in the support plate. The filter box is fixedly installed on the top of the guide rod, and a first spring is arranged between the filter box and the support plate. A mounting plate is arranged under the support plate, and a micro switch is fixedly installed on the upper surface of the mounting plate, and the guide rod is vertically arranged above the micro switch contact.

[0014] In order to connect the desulfurization agent solution and the spray ring for use, further, a spray ring is arranged in the desulfurization tower body, a spray pipe is connected to the bottom of the spray ring, a spray nozzle is connected to the bottom of the spray pipe, one end of the connecting pipe extends into the desulfurization tower body, and the connecting pipe is connected to the spray ring through a hose.

[0015] In order to prevent the second air pipe of the flue gas exhaust pipe from being blocked, further, a fixed sleeve is fixedly installed on the top of the desulfurization tower body, a linear bearing is arranged in the fixed sleeve, a connecting rod is fixedly connected with the center position of the spray pipe, the connecting rod and the linear bearing are slidably connected, a cone block is arranged on the top of the connecting rod located in the second air pipe, a limit plate is fixedly installed on the surface of the connecting rod, and a third spring is arranged between the limit plate and the linear bearing.

[0016] In order to realize automatic injection of desulfurizer, further, a guide block is fixedly installed on the side wall of the desulfurization tower body, a guide groove is opened in the guide block, a liquid outlet is opened between the guide block and the desulfurization tower body, the liquid outlet is connected to the spray ring, a sealing plate is elastically slidably connected in the guide block, one side of the guide block is connected to a liquid storage tank, and the sealing plate is slidably installed in the liquid storage tank.

[0017] The opening of the liquid storage tank is controlled by the rotation of the rotating shaft to achieve the perfusion of the desulfurizer. Furthermore, the rotating shaft is located on the outside of the desulfurization tower body and is fixedly connected to a winding wheel at one end. A bracket is fixedly installed on one side of the bottom of the desulfurization tower body, and a winding wheel is also rotatably installed in the bracket. A traction rope is wound in both groups of the winding wheels, one end of the traction rope is fixedly connected to the winding wheel, and the other end of the traction rope is fixedly connected to the bottom of the sealing plate.

[0018] Compared with the prior art, the present invention provides a flue gas desulfurization tower, which has the following beneficial effects:

[0019] 1. The flue gas desulfurization tower prolongs the residence time of the flue gas in the desulfurization tower body by respectively arranging the first baffle and the second baffle at the bottom of the desulfurization tower body, and prolongs the spray desulfurization treatment time of the flue gas in the desulfurization tower body as much as possible, thereby ensuring the desulfurization effect of the flue gas;

[0020] 2. The flue gas desulfurization tower is provided with a motor to drive the first baffle to rotate, and cooperates with two sets of wind plates below the first baffle to stir the desulfurizer solution at the bottom of the desulfurization tower body, thereby promoting a full mixing reaction of the flue gas and the desulfurizer solution, and further improving the desulfurization treatment effect of the flue gas;

[0021] 3. The flue gas desulfurization tower is provided with a top rod on the first baffle, and the second baffle is elastically connected to the desulfurization tower body by a second spring. The top rod rotates with the first baffle, lifts the second baffle at multiple points, and drives the second baffle to shake. When the liquid level of the desulfurizer solution reaches above the second baffle, the shaking of the second baffle can mix the desulfurizer solution in the area, promote the flue gas to fully react with the desulfurizer solution during the floating process, and optimize the desulfurization effect.

[0022] 4. The flue gas desulfurization tower is connected to a filter box at the top of the second air pipe. The filter box is provided with filter cotton for dehumidifying the flue gas after desulfurization to ensure the recovery quality of the gas;

[0023] 5. The flue gas desulfurization tower has a winding wheel fixed on the surface of the rotating shaft. The winding wheel pulls the traction rope, and the traction rope is connected to the bottom of the sealing plate. The sealing plate is pulled downward to release the desulfurizer solution in the liquid storage tank into the desulfurization tower body, thereby realizing automatic infusion of the desulfurizer.

[0024] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can prolong the residence time of the flue gas in the desulfurization tower body, and prolong the spray desulfurization treatment time of the flue gas in the desulfurization tower body as much as possible to ensure the desulfurization effect of the flue gas; promote the full mixing reaction of the flue gas and the desulfurizer solution, and further improve the desulfurization treatment effect of the flue gas; the device can also be connected to a filter box at the top of the second air pipe, and the filter box is provided with filter cotton, which is used to dehumidify the flue gas after desulfurization to ensure the recovery quality of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main three-dimensional structure of a flue gas desulfurization tower proposed by the present invention;

[0026] Figure 2 A flue gas desulfurization tower proposed by the present invention Figure 1 The enlarged three-dimensional structure diagram of part A in the middle;

[0027] Figure 3 A schematic diagram of the rear perspective structure of a flue gas desulfurization tower proposed by the present invention;

[0028] Figure 4 This is a schematic diagram of a partial cross-sectional structure inside a filter box of a flue gas desulfurization tower proposed by the present invention;

[0029] Figure 5 A schematic diagram of a cross-sectional three-dimensional structure of a flue gas desulfurization tower proposed by the present invention;

[0030] Figure 6 This is a schematic diagram of a three-dimensional structure for preventing blockage in the second air pipe of a flue gas desulfurization tower proposed by the present invention;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of the inner bottom of a flue gas desulfurization tower proposed by the present invention;

[0032] Figure 8 This is a schematic diagram of the connection structure of a liquid storage tank and a traction rope of a flue gas desulfurization tower proposed by the present invention.

[0033] In the figure: 1. desulfurization tower body; 2. first air pipe; 3. second air pipe; 4. support leg; 5. filter box; 6. filter barrel; 7. connecting pipe; 8. spray ring; 9. spray pipe; 10. spray nozzle; 11. cylinder; 12. pressure plate; 13. support plate; 14. filter cotton; 15. support plate; 16. mounting plate; 17. micro switch; 18. guide rod; 19. first spring; 20. third air pipe; 21. one-way valve; 22. drain pipe; 23. motor; 2 4. Wind plate; 25. Through hole; 26. Rotating shaft; 27. Winding wheel; 28. Bracket; 29. ​​Traction rope; 30. Guide block; 31. Liquid storage tank; 32. Closing plate; 33. Liquid outlet; 34. Guide groove; 35. First partition; 36. Push rod; 37. First through hole; 38. Second spring; 39. Second partition; 40. Second through hole; 41. Limiting plate; 42. Third spring; 43. Fixed sleeve; 44. Cone block; 45. Connecting rod; 46. Linear bearing. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Example:

[0037] Reference Figure 1-Figure 8 A flue gas desulfurization tower comprises a desulfurization tower body 1, a first air pipe 2 is fixedly connected to one side of the bottom of the desulfurization tower body 1, a second air pipe 3 is fixedly connected to the top of the desulfurization tower body 1, a support leg 4 is fixedly installed at the bottom of the desulfurization tower body 1, a spray ring 8 is arranged in the desulfurization tower body 1, a spray pipe 9 is connected to the bottom of the spray ring 8, and a spray nozzle 10 is connected to the bottom of the spray pipe 9.

[0038] The flue gas enters the desulfurization tower body 1 from the first air pipe 2 at the bottom of the tower. The desulfurizer is sprayed into the flue gas from top to bottom by the spray ring 8, spray pipe 9 and spray nozzle 10 in sequence. After mixing and reacting with the flue gas, it is discharged through the second air pipe 3 and then collected.

[0039] An isolation assembly for prolonging the reaction time of flue gas and desulfurizer is arranged in the flue gas desulfurization tower. The isolation assembly includes a first partition plate 35 and a second partition plate 39 arranged above the first partition plate 35. First through holes 37 are equidistantly arranged in an annular shape in the first partition plate 35.

[0040] Specifically, the first partition 35 is configured as an arc-shaped plate with a hollow structure, and a first through hole 37 is opened in the first partition 35, and is only opened in the central area of ​​the first partition 35. The horizontal position of the first partition 35 is higher than the horizontal position of the first air pipe 2. Therefore, after the flue gas enters the desulfurization tower body 1 through the first air pipe 2, the first partition 35 is used to restrict the flue gas to the bottom of the desulfurization tower body 1, and the desulfurizer sprayed above the desulfurization tower body 1 is used to fully react with it to perform desulfurization treatment.

[0041] The first partition 35 is rotatably arranged at the bottom of the desulfurization tower body 1 , and a rotating shaft 26 is fixedly connected inside the first partition 35 , and a motor 23 is transmission-connected to the bottom end of the rotating shaft 26 , and the motor 23 is fixedly installed on one side of the support leg 4 .

[0042] Since the flue gas will rise due to its own buoyancy, only using the first baffle 35 to extend the time the flue gas stays at the bottom of the desulfurization tower body 1 cannot ensure that the flue gas and the desulfurizer liquid are fully mixed. Therefore, the first baffle 35 is connected with the shaft 26, and the motor 23 is used to drive the shaft 26 to rotate, so that the first baffle 35 rotates in the desulfurization tower body 1. Furthermore, the surface of the shaft 26 is symmetrically connected with a wind plate 24 below the first baffle 35, and a through hole 25 is provided in the wind plate 24. The wind plate 24 with the through hole 25 is used to rotate synchronously with the first baffle 35. As more and more desulfurizer is sprayed to the bottom of the desulfurization tower body 1, a static state is formed at the bottom of the desulfurization tower body 1. The wind plate 24 is set to increase the mixing area of ​​the desulfurizer liquid, and the flue gas is restricted to the bottom of the desulfurization tower body 1. At the same time, the desulfurizer liquid is mixed to ensure a sufficient mixing reaction between the flue gas and the desulfurizer, thereby ensuring the desulfurization effect of the flue gas.

[0043] Two groups of second springs 38 are symmetrically arranged on the inner wall of the desulfurization tower body 1, and the second partition 39 is connected to the bottom of the two groups of second springs 38. A second through hole 40 is opened in the second partition 39. A top rod 36 is fixedly installed on one side of the upper surface of the first partition 35, and the top rod 36 and the bottom surface of the second partition 39 are fitted together.

[0044] In this embodiment, a second partition 39 is further provided to further reduce the rising speed of the flue gas rising through the first through hole 37. The second partition 39 is elastically connected to the desulfurization tower body 1 through a second spring 38. A push rod 36 is connected to the top of the first partition 35. When the first partition 35 rotates, the push rod 36 will lift different points on the bottom of the second partition 39. Therefore, when the liquid level of the desulfurizer rises to the area of ​​the second partition 39, the shaking of the second partition 39 can be used to mix the liquid in the liquid level.

[0045] It should be noted that the aperture of the second through hole 40 is the same as that of the first through hole 37, and the aperture range is 5-8mm. The flue gas floats up through the first through hole 37 and the second through hole 40 after spraying. The first through hole 37 and the second through hole 40 have small apertures, which can extend the residence time of the flue gas under the first baffle 35 and between the first baffle 35 and the second baffle 39 as much as possible, ensuring that the spraying treatment time of the flue gas in the desulfurization tower body 1 is sufficient, thereby improving the desulfurization effect of the flue gas.

[0046] The dehumidification component is used to filter the flue gas after desulfurization, and the dehumidification component includes a filter box 5 and a filter cotton 14 arranged in the filter box 5. The desulfurization tower body 1 is connected to the filter box 5 through the second air pipe 3. Two groups of support plates 15 are symmetrically arranged on the outer wall of the desulfurization tower body 1. A guide rod 18 is slidably installed in the support plate 15. The filter box 5 is fixedly installed on the top of the guide rod 18. A first spring 19 is arranged between the filter box 5 and the support plate 15. A mounting plate 16 is arranged below the support plate 15. A micro switch 17 is fixedly installed on the upper surface of the mounting plate 16. The guide rod 18 is arranged vertically above the contact of the micro switch 17.

[0047] In this embodiment, a filter box 5 is connected to the top of the second air pipe 3. Filter cotton 14 is arranged in the filter box 5 to dehumidify the flue gas after desulfurization to ensure the recovery quality of the gas.

[0048] Specifically, the smoke absorbs moisture from the gas through the filter cotton 14. As the adsorption time of the filter cotton 14 increases, the weight of the entire filter box 5 increases, the first spring 19 is compressed, the filter box 5 moves downward, and the guide rod 18 is slidably connected to the support plate 15. Therefore, the bottom end of the guide rod 18 will touch the micro switch 17 below, and the micro switch 17 is electrically connected to the cylinder 11.

[0049] Specifically, two groups of cylinders 11 are symmetrically arranged on the filter box 5, the telescopic rod ends of the cylinders 11 extend into the filter box 5 and are connected to a pressure plate 12, a support plate 13 is fixedly installed on the bottom surface of the filter box 5, and the filter cotton 14 is fitted between the pressure plate 12 and the support plate 13.

[0050] The guide rod 18 presses down the micro switch 17 to start the cylinder 11. The cylinder 11 drives the pressure plate 12 to squeeze the filter cotton 14. The moisture in the filter cotton 14 is squeezed into the filter barrel 6. Furthermore, the dehumidification component also includes a filter barrel 6. The filter barrel 6 is connected to the filter box 5. The bottom of the filter barrel 6 is connected to a connecting pipe 7. One end of the connecting pipe 7 extends into the desulfurization tower body 1. The connecting pipe 7 is connected to the spray ring 8 through a hose to recycle the desulfurizer solution generated by dehumidification.

[0051] Two groups of drainage pipes 22 are symmetrically arranged at the bottom of the desulfurization tower body 1 . The filter box 5 is connected to the drainage pipe 22 through the third air pipe 20 . A one-way valve 21 is arranged in the drainage pipe 22 .

[0052] After the desulfurization tower body 1 has been used for a certain period of time, the used desulfurizer solution needs to be discharged. Therefore, two sets of drain pipes 22 are connected at the bottom of the desulfurization tower body 1. Since the desulfurizer solution contains impurities, the air pressure generated by the movement of the pressure plate 12 in the filter box 5 is blown into the drain pipe 22 through the third air pipe 20 to avoid blockage when the drain pipe 22 discharges waste liquid.

[0053] It should be noted that a one-way valve 21 is provided in the third air pipe 20 , which can only discharge gas into the drain pipe 22 through the third air pipe 20 , thereby preventing waste liquid in the drain pipe 22 from being sucked into the third air pipe 20 .

[0054] In order to prevent the second air pipe 3 of the flue gas exhaust pipe from being blocked, further, a fixed sleeve 43 is fixedly installed on the top of the desulfurization tower body 1, and a linear bearing 46 is arranged in the fixed sleeve 43. A connecting rod 45 is fixedly connected to the center position of the spray pipe 9. The connecting rod 45 and the linear bearing 46 are slidably connected. A cone block 44 is arranged on the top of the connecting rod 45 in the second air pipe 3. A limiting plate 41 is fixedly installed on the surface of the connecting rod 45, and a third spring 42 is arranged between the limiting plate 41 and the linear bearing 46.

[0055] In this embodiment, the entire spray ring 8 is connected to the top of the desulfurization tower body 1 through an elastic connection assembly, specifically including a fixed sleeve 43 and a spray pipe 9. The spray pipe 9 is connected to the fixed sleeve 43 through a connecting rod 45, and the spray pipe 9 and the linear bearing 46 in the fixed sleeve 43 are slidably connected. A third spring 42 is connected between the linear bearing 46 and the limit plate 41. When the spray nozzle 10 sprays, the reaction force generated by the liquid spray compresses the third spring 42, and then the reset effect of the third spring 42 is used to make the connecting rod 45 reciprocate in the linear bearing 46, thereby driving the cone block 44 at the top of the connecting rod 45 to move in the second air pipe 3, avoiding blockage of the second air pipe 3, and ensuring that the flue gas after desulfurization is smoothly discharged through the second air pipe 3 for collection.

[0056] In order to realize automatic injection of desulfurizer, further, a guide block 30 is fixedly installed on the side wall of the desulfurization tower body 1, a guide groove 34 is opened in the guide block 30, a liquid outlet 33 is opened between the guide block 30 and the desulfurization tower body 1, a sealing plate 32 is elastically slidably connected in the guide block 30, one side of the guide block 30 is connected to a liquid storage tank 31, and the sealing plate 32 is slidably installed in the liquid storage tank 31.

[0057] In this embodiment, a desulfurizer solution is injected into the liquid storage tank 31, and a sealing plate 32 is used to seal one side of the liquid storage tank 31. The sealing plate 32 is then elastically and slidably connected to one side of the guide block 30. A guide groove 34 is provided in the guide block 30 to ensure the close sealing of the sealing plate 32 and the liquid storage tank 31. A liquid outlet 33 is provided in the guide block 30, and the liquid outlet 33 is connected to the spray ring 8. In the initial state, the sealing plate 32 seals the liquid outlet 33, and the sealing plate 32 is moved downward to open the liquid outlet 33 and the liquid storage tank 31, so that the desulfurizer solution is sprayed through the spray ring 8, the spray pipe 9 and the spray nozzle 10 in sequence.

[0058] The rotating shaft 26 is located outside the desulfurization tower body 1 and is fixedly connected to a winding wheel 27 at one end. A bracket 28 is fixedly installed on one side of the bottom of the desulfurization tower body 1. The winding wheel 27 is also rotatably installed in the bracket 28. A traction rope 29 is wound around the two sets of winding wheels 27. One end of the traction rope 29 is fixedly connected to the winding wheel 27, and the other end of the traction rope 29 is fixedly connected to the bottom of the sealing plate 32.

[0059] In this embodiment, the rotation of the motor 23 is used to drive the rotating shaft 26 to rotate. Since the winding wheel 27 is fixedly installed on the surface of the rotating shaft 26, the winding wheel 27 pulls the traction rope 29, and the traction rope 29 is connected to the bottom of the sealing plate 32, so as to release the desulfurizer solution in the liquid storage tank 31 and spray desulfurize the flue gas in the desulfurization tower body 1.

[0060] In the present invention, the first air pipe 2 is opened, and the flue gas enters the desulfurization tower body 1 from the first air pipe 2 at the bottom of the tower, and the motor 23 is started to drive the rotating shaft 26 to rotate, and the rotating shaft 26 drives the winding wheel 27 to rotate and pull the traction rope 29, and the traction rope 29 is connected to the bottom of the sealing plate 32, so that the desulfurizer solution in the liquid storage tank 31 can be released, and the desulfurizer solution is passed into the spray ring 8, and the spray ring 8, the spray pipe 9 and the spray nozzle 10 are used in turn to spray the desulfurizer from top to bottom into the flue gas, and after mixing and reacting with the flue gas, the desulfurizer is discharged through the second air pipe 3 and then collected;

[0061] The motor 23 is started to drive the first baffle 35 and the wind plate 24 on the surface of the rotating shaft 26 to rotate at the bottom of the desulfurization tower body 1. The arc-shaped shrouding structure of the first baffle 35 can prolong the time that the flue gas stays at the bottom of the desulfurization tower body 1. As the spraying continues at any time, the desulfurizer solution will be deposited in the desulfurization tower body 1 and form a static state at the bottom of the desulfurization tower body 1. The wind plate 24 is set to increase the mixing area of ​​the desulfurizer liquid, and the flue gas is restricted to the bottom of the desulfurization tower body 1. At the same time, the desulfurizer liquid is mixed to ensure a full mixing reaction between the flue gas and the desulfurizer, thereby ensuring the desulfurization effect of the flue gas;

[0062] Gradually, a second partition 39 is provided to further reduce the floating speed of the flue gas floating through the first through hole 37. When the liquid level of the desulfurizer liquid rises to the area of ​​the second partition 39, while the first partition 35 rotates, the top rod 36 will lift at different points at the bottom of the second partition 39. The shaking of the second partition 39 can mix the liquid in the liquid level, increase the mixing area of ​​the desulfurizer solution in the desulfurization tower body 1, and continuously ensure the full reaction of the flue gas and the desulfurizer solution.

[0063] The flue gas enters the filter box 5 through the second air pipe 3, and the moisture in the gas is absorbed by the filter cotton 14. As the adsorption time of the filter cotton 14 increases, the weight of the entire filter box 5 increases, the first spring 19 is compressed, the filter box 5 moves down, the guide rod 18 moves down and touches the micro switch 17 below, the micro switch 17 controls the start cylinder 11, the cylinder 11 drives the pressure plate 12 to squeeze the filter cotton 14, and the moisture in the filter cotton 14 is squeezed into the filter barrel 6. The bottom of the filter barrel 6 is connected with a connecting pipe 7, which is connected to the spray ring 8 through a hose by the connecting pipe 7. It will not hinder the shaking of the spray ring 8 and can also recycle the desulfurizer solution generated by dehumidification.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flue gas desulfurization tower, comprising a desulfurization tower body (1), wherein a first air pipe (2) is fixedly connected to one side of the bottom of the desulfurization tower body (1), and a second air pipe (3) is fixedly connected to the top of the desulfurization tower body (1), characterized in that: Also includes: An isolation component for extending the reaction time of flue gas and desulfurizing agent, the isolation component comprising a first partition plate (35) and a second partition plate (39) arranged above the first partition plate (35); A dehumidification component for filtering flue gas after desulfurization, the dehumidification component comprising a filter box (5) and filter cotton (14) arranged in the filter box (5), and the desulfurization tower body (1) is connected to the filter box (5) through a second air pipe (3).

2. A flue gas desulfurization tower according to claim 1, characterized in that: The first partition (35) is rotatably arranged at the bottom of the desulfurization tower body (1), and a rotating shaft (26) is fixedly connected inside the first partition (35). First through holes (37) are equidistantly arranged in an annular pattern inside the first partition (35). The bottom end of the rotating shaft (26) is transmission-connected to a motor (23). A support leg (4) is fixedly installed at the bottom of the desulfurization tower body (1), and the motor (23) is fixedly installed on one side of the support leg (4).

3. A flue gas desulfurization tower according to claim 2, characterized in that: The surface of the rotating shaft (26) is symmetrically connected to a wind plate (24) located below the first partition plate (35), and a through hole (25) is provided in the wind plate (24).

4. A flue gas desulfurization tower according to claim 1, characterized in that: Two groups of second springs (38) are symmetrically arranged on the inner wall of the desulfurization tower body (1); the second partition (39) is connected to the bottom of the two groups of second springs (38); a second through hole (40) is opened in the second partition (39); a top rod (36) is fixedly installed on one side of the upper surface of the first partition (35); the top rod (36) and the bottom surface of the second partition (39) are arranged in close contact.

5. A flue gas desulfurization tower according to claim 1, characterized in that: Two groups of cylinders (11) are symmetrically arranged on the filter box (5), the telescopic rod ends of the cylinders (11) extend into the filter box (5) and are connected to a pressure plate (12), a support plate (13) is fixedly installed on the bottom surface of the filter box (5), the filter cotton (14) is arranged between the pressure plate (12) and the support plate (13), two groups of drainage pipes (22) are symmetrically arranged at the bottom of the desulfurization tower body (1), the filter box (5) is connected to the drainage pipe (22) through a third air pipe (20), and a one-way valve (21) is arranged in the drainage pipe (22).

6. A flue gas desulfurization tower according to claim 5, characterized in that: The dehumidification component also includes a filter barrel (6), the filter barrel (6) is connected to the filter box (5), the bottom of the filter barrel (6) is connected to a connecting pipe (7), the outer wall of the desulfurization tower body (1) is symmetrically provided with two groups of support plates (15), a guide rod (18) is slidably installed in the support plate (15), the filter box (5) is fixedly installed on the top of the guide rod (18), a first spring (19) is arranged between the filter box (5) and the support plate (15), a mounting plate (16) is arranged below the support plate (15), a micro switch (17) is fixedly installed on the upper surface of the mounting plate (16), and the guide rod (18) is vertically arranged above the contact of the micro switch (17).

7. A flue gas desulfurization tower according to claim 6, characterized in that: A spray ring (8) is arranged in the desulfurization tower body (1), the bottom of the spray ring (8) is connected to a spray pipe (9), the bottom of the spray pipe (9) is connected to a spray nozzle (10), one end of the connecting pipe (7) extends into the desulfurization tower body (1), and the connecting pipe (7) is connected to the spray ring (8) through a hose.

8. A flue gas desulfurization tower according to claim 7, characterized in that: A fixing sleeve (43) is fixedly mounted on the top of the desulfurization tower body (1), a linear bearing (46) is arranged in the fixing sleeve (43), a connecting rod (45) is fixedly connected to the center of the spray pipe (9), the connecting rod (45) and the linear bearing (46) are slidably connected, a cone block (44) is arranged at the top of the connecting rod (45) in the second air pipe (3), a limiting plate (41) is fixedly mounted on the surface of the connecting rod (45), and a third spring (42) is arranged between the limiting plate (41) and the linear bearing (46).

9. A flue gas desulfurization tower according to claim 2, characterized in that: A guide block (30) is fixedly mounted on the side wall of the desulfurization tower body (1), a guide groove (34) is provided in the guide block (30), a liquid outlet (33) is provided between the guide block (30) and the desulfurization tower body (1), the liquid outlet (33) is connected to the spray ring (8), a sealing plate (32) is elastically slidably connected to the guide block (30), one side of the guide block (30) is connected to a liquid storage tank (31), and the sealing plate (32) is slidably mounted in the liquid storage tank (31).

10. A flue gas desulfurization tower according to claim 9, characterized in that: The rotating shaft (26) is located outside the desulfurization tower body (1), and one end of the rotating shaft (26) is fixedly connected to a winding wheel (27). A bracket (28) is fixedly installed on one side of the bottom of the desulfurization tower body (1). A winding wheel (27) is also rotatably installed in the bracket (28). A traction rope (29) is wound in both groups of the winding wheels (27). One end of the traction rope (29) is fixedly connected to the winding wheel (27), and the other end of the traction rope (29) is fixedly connected to the bottom of the sealing plate (32).

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