Steam boiler flue gas desulfurization circulating purification device

Abstract

The invention discloses a steam boiler flue gas desulfurization circulating purification device and belongs to the technical field of flue gas purification. The device comprises a desulfurization treatment box, the inner wall of the desulfurization treatment box is fixedly connected with a mounting frame, the top of the mounting frame is provided with a spraying mechanism, the spraying mechanism is internally provided with a flushing mechanism, the inner wall of the desulfurization treatment box is rotatably connected with a demister, and the surface of the demister is provided with a vibration falling mechanism. A circulating water tank is fixedly mounted on the side wall of the desulfurization treatment box, the spraying mechanism comprises a plurality of atomizing nozzles arranged in the desulfurization treatment box and controls the atomizing nozzles to continuously move in the spraying process to improve the spraying comprehensiveness, and the flushing mechanism comprises connecting rings arranged on the outer walls of the atomizing nozzles and drives the atomizing nozzles to turn over by an angle to flush the atomizing nozzles. And the vibration-off mechanism comprises an abutting rod arranged above the demister, and the abutting rod is controlled to continuously knock the demister, so that slurry adsorbed in the demister is vibrated off.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flue gas purification, in particular to a steam boiler flue gas desulfurization circulating purification device. BACKGROUND

[0002] The flue gas generated during the operation of the steam boiler is a pollution source, because the flue gas contains dust, carbon monoxide, carbon dioxide, sulfur dioxide and other gases generated during the combustion of coal, and if it is not treated and directly discharged into the atmosphere, it will inevitably pollute the environment and harm the human body. Therefore, more and more attention is paid to the treatment of flue gas from coal-fired steam boilers.

[0003] The flue gas desulfurization circulating purification device is an indispensable environmental protection equipment in the system of coal-fired boiler, industrial kiln and the like, which is used in cooperation with the steam boiler, sprays alkaline slurry into the flue gas discharged from the steam boiler, effectively removes the acidic pollutants such as sulfur dioxide, and mainly includes a desulfurization treatment box (absorption tower), a spraying system, a demister and the like.

[0004] The spraying system of the existing device mostly adopts a fixed spraying layer, the spacing between the atomizing nozzles is constant, and the spraying angle is fixed. This arrangement causes the atomization coverage of the slurry to be rigid, and dead angles are easily formed in the edge and corner areas of the tower body, while the central area can be over-sprayed, which can cause insufficient contact between the alkaline slurry and the flue gas, limit the gas-liquid mass transfer efficiency, cause incomplete desulfurization reaction in the local area, and affect the improvement of the overall desulfurization efficiency. At the same time, the fixed spraying mode cannot effectively flush the tower wall, and cleaning of the scale needs frequent shutdown and relies on high-intensity manual work, which is high in maintenance cost and affects the production progress. SUMMARY

[0005] The purpose of the present application is to solve the problems raised in the background art, and a steam boiler flue gas desulfurization circulating purification device is proposed.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a steam boiler flue gas desulfurization circulating purification device, comprising a desulfurization treatment box, the inner wall of the desulfurization treatment box is fixedly connected with a mounting frame, and the top of the mounting frame is provided with a spraying mechanism, the inside of the spraying mechanism is provided with a flushing mechanism, the inner wall of the desulfurization treatment box is rotatably connected with a demister, and the surface of the demister is provided with a vibration mechanism, the side wall of the desulfurization treatment box is fixedly installed with a circulating water tank, and the top of the circulating water tank is fixedly installed with a circulating pump, and the output end of the circulating pump is fixedly connected with a first conveying pipe.

[0007] The spraying mechanism comprises a plurality of atomizing nozzles arranged in the desulfurization treatment box, and the atomizing nozzles are continuously moved during the spraying control process, thereby improving the comprehensiveness of the spraying.

[0008] The rinsing mechanism includes a connecting ring disposed on the outer wall of the atomizing nozzle, which drives the atomizing nozzle to rotate at an angle to rinse the inner wall of the desulfurization treatment box to remove impurities.

[0009] The shaking mechanism includes a stop bar positioned above the demister. The stop bar is controlled to continuously strike the demister, causing the slurry adsorbed inside the demister to fall off.

[0010] Furthermore, the spraying mechanism includes a fixed column, and a reset groove is formed on the outer wall of the fixed column. A first disc is slidably connected to the outer wall of the fixed column, and a protrusion is fixedly connected inside the first disc. The outer wall of the protrusion slides against the inner wall of the reset groove. Several mounting plates are fixedly connected to the outer wall of the first disc. A first spring is fixedly connected to the top of the first disc, and a ring is fixedly connected to the end of the first spring away from the first disc. Two fixed rods are fixedly connected through the interior of the first disc. The bottom outer walls of the two fixed rods are rotatably connected to a second disc. The outer wall of the disc is fixedly connected with several extrusion braces. The outer wall of each of the extrusion braces, away from the second disc, is provided with a groove. The outer wall of the fixed column is fixedly connected with a second limiting block. The outer walls of the two fixed rods are slidably connected to a fixed disc. The tops of several mounting plates are fixedly connected to a first diverter frame. The top of the first diverter frame is rotatably connected to a second diverter frame. The outer wall of the first diverter frame is fixedly connected with several connecting pipes. Several atomizing nozzles are fixedly installed at the corresponding ends of the connecting pipes away from the first diverter frame. The interior of the mounting plate is provided with a first sliding groove.

[0011] Furthermore, a motor is fixedly installed on the top of the desulfurization treatment box, and the output shaft of the motor is fixedly connected to a rotating shaft. The end of the first conveying pipe away from the circulating pump is fixedly connected to the inside of the second diversion frame. The bottom of the fixed column is fixedly connected to the top of the mounting frame. The inside of the ring is rotatably connected to the outer wall of the fixed column. The outer wall of the extrusion inclined rod corresponds to the outer wall of the connecting pipe. The top of the fixed plate is fixedly connected to the bottom of the rotating shaft.

[0012] Furthermore, a connecting plate is fixedly connected to the bottom of the connecting ring, a second spring is fixedly connected to the side wall of the connecting plate, and a fixing plate is fixedly connected to the end of the second spring away from the connecting plate. The ends of several mounting plates away from the first disc are all rotatably connected to a rotating plate by a torsion spring, and a second sliding groove is provided inside the rotating plate.

[0013] Furthermore, the outer wall of the connecting ring is slidably connected to the inner wall of the first slide groove, the top of the fixing plate is fixedly connected to the bottom of the mounting plate, the inner wall of the second slide groove corresponds to the inner wall of the first slide groove, the outer wall of the connecting ring is slidably connected to the inner wall of the second slide groove, and the connecting ring is fixedly connected to the outer wall of the corresponding connecting pipe.

[0014] Furthermore, a limit rod is fixedly connected to the inner wall of the desulfurization treatment box, a beveled ring is fixedly connected to the bottom of the demister, a connecting rod is fixedly connected to the top of the inner wall of the desulfurization treatment box, a push rod is slidably connected to the inner wall of the connecting rod, and a third spring is fixedly connected to the top of the push rod.

[0015] Furthermore, the outer wall of the limiting rod corresponds to the inclined wall of the inclined ring, the end of the third spring away from the abutment is fixedly connected to the outer wall of the connecting rod, the outer wall of the rotating shaft is fixedly connected to the first limiting block, and the interior of the demister is slidably connected to the outer wall of the first limiting block.

[0016] Furthermore, a second conveying pipe is fixedly connected to the bottom of the circulating water tank, and the end of the second conveying pipe away from the circulating water tank is fixedly connected to the inside of the desulfurization treatment tank. An air inlet pipe is fixedly connected through the outer wall of the desulfurization treatment tank, and an exhaust port is fixedly connected through the outer wall of the desulfurization treatment tank.

[0017] Compared with existing technologies, the above solution has the following advantages:

[0018] 1. The squeezing angled rod slides along the inner wall of the first chute under pressure, changing the spacing between several atomizing nozzles. After the squeezing angled rod stops contacting the connecting pipe, the connecting pipe resets along the inner wall of the first chute, restoring the spacing between the atomizing nozzles. The continuous rotation of the first disc changes the spacing between the atomizing nozzles, which, combined with its own rotation, increases the spray range. This allows the atomized alkaline slurry to fill the interior of the desulfurization treatment box as much as possible, ensuring the comprehensive desulfurization and purification of the flue gas by the alkaline slurry.

[0019] 2. When the connecting pipe contacts and presses against the groove on its outer wall, the first disc moves rapidly downwards due to the elastic force of the first spring. Simultaneously, the first disc moves downwards along with the connecting pipe via the mounting plate. This causes the atomizing nozzle to spray water onto the inner wall of the desulfurization treatment box while simultaneously moving downwards, thus achieving the effect of rinsing the inner wall of the desulfurization treatment box and removing particulate matter from the flue gas adhering to the inner wall. The rotation of the atomizing nozzle ensures that the rinsing range covers the entire circumference of the inner wall of the desulfurization treatment box, preventing concentrated scaling areas from forming on the inner wall. This significantly enhances the effectiveness and practicality of the product, achieving high efficiency.

[0020] 3. By driving the demister to rise synchronously along the outer wall of the first limit block, and then when the highest point of the inclined edge ring passes the limit rod, the elastic force of the third spring is released, causing the demister to move rapidly downward. Then, the demister drives the inclined edge ring to strike the outer wall of the limit rod. During this process, the demister will be subjected to vibration, which can shake off the slurry droplets inside the demister. At the same time, the rotating demister can further throw out the slurry droplets. The rotational motion can effectively peel off the initial scale layer that is forming, prevent clogging, and achieve a deep and thorough self-cleaning effect. No shutdown isolation is required, which greatly improves the continuous operation reliability and production efficiency of the desulfurization purification system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the desulfurization treatment box proposed in this invention;

[0023] Figure 3 This is a schematic diagram of the structural connection between the mounting bracket and the rotating shaft proposed in this invention;

[0024] Figure 4 This is a schematic diagram of the structural transmission of the fixed column and the compression diagonal bar proposed in this invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the fixing rod proposed in this invention;

[0026] Figure 6 This is a schematic diagram of the transmission structure of the inclined ring and the third spring proposed in this invention.

[0027] The labels in the attached diagram are as follows: 1. Desulfurization treatment box; 2. Mounting frame; 3. Spraying mechanism; 4. Flushing mechanism; 5. Motor; 6. Rotating shaft; 7. First limit block; 8. Demister; 9. Shaking mechanism; 10. Circulating water tank; 11. Circulating pump; 12. First conveying pipe; 13. Second conveying pipe; 14. Inlet pipe; 15. Exhaust port; 301. Fixing column; 302. Reset groove; 303. First disc; 304. Mounting plate; 305. First spring; 306. Ring; 307. Fixing rod; 308. 309. Second disc; 310. Extrusion bar; 311. Groove; 312. Second limiting block; 313. Fixed disc; 314. First diverter frame; 315. Second diverter frame; 316. Connecting pipe; 317. Atomizing nozzle; 401. First slide groove; 402. Connecting ring; 403. Connecting plate; 404. Second spring; 405. Fixed plate; 406. Rotating plate; 407. Second slide groove; 901. Inclined ring; 902. Limiting rod; 903. Connecting rod; 904. Abutment rod; 905. Third spring. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] In the description of this invention, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are only used to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, order, or relative importance between these entities or operations.

[0030] Example 1, please refer to Figures 1-4A flue gas desulfurization and circulation purification device for steam boilers includes a desulfurization treatment box 1. A mounting frame 2 is fixedly connected to the inner wall of the desulfurization treatment box 1, and a spray mechanism 3 is installed on the top of the mounting frame 2. A rinsing mechanism 4 is installed inside the spray mechanism 3. A motor 5 is fixedly installed on the top of the desulfurization treatment box 1, and a rotating shaft 6 is fixedly connected to the output shaft of the motor 5. A demister 8 is rotatably connected to the inner wall of the desulfurization treatment box 1, and a shaking mechanism 9 is installed on the surface of the demister 8. A circulating water tank 10 is fixedly installed on the side wall of the desulfurization treatment box 1, and a circulating pump 11 is fixedly installed on the top of the circulating water tank 10. The output end is fixedly connected to a first conveying pipe 12, the bottom of the circulating water tank 10 is fixedly connected to a second conveying pipe 13, and the end of the second conveying pipe 13 away from the circulating water tank 10 is fixedly connected to the inside of the desulfurization treatment box 1. The outer wall of the desulfurization treatment box 1 is fixedly connected to an air inlet pipe 14, and the outer wall of the desulfurization treatment box 1 is fixedly connected to an exhaust hole 15. The spraying mechanism 3 includes a plurality of atomizing nozzles 316 disposed inside the desulfurization treatment box 1. The atomizing nozzles 316 are controlled to move continuously during the spraying process to improve the comprehensiveness of the spraying.

[0031] Furthermore, the spraying mechanism 3 includes a fixed column 301, and a reset groove 302 is formed on the outer wall of the fixed column 301. A first disc 303 is slidably connected to the outer wall of the fixed column 301, and a protrusion is fixedly connected inside the first disc 303. The outer wall of the protrusion slides against the inner wall of the reset groove 302. Several mounting plates 304 are fixedly connected to the outer wall of the first disc 303. A first spring 305 is fixedly connected to the top of the first disc 303, and a ring 306 is fixedly connected to the end of the first spring 305 away from the first disc 303. Two fixed rods 307 are fixedly connected through the interior of the first disc 303. The bottom outer walls of the two fixed rods 307 are rotatably connected to a second disc 308. The outer wall of the 08 is fixedly connected with several extrusion inclined rods 309. The outer wall of the several extrusion inclined rods 309 away from the second disc 308 is provided with a groove 310. The outer wall of the fixed column 301 is fixedly connected with a second limiting block 311. The outer walls of the two fixed rods 307 are slidably connected with a fixed disc 312. The tops of several mounting plates 304 are fixedly connected with a first diversion frame 313. The top of the first diversion frame 313 is rotatably connected with a second diversion frame 314. The outer wall of the first diversion frame 313 is fixedly connected with several connecting pipes 315. Several atomizing nozzles 316 are fixedly installed at the end of the corresponding connecting pipe 315 away from the first diversion frame 313. The interior of the mounting plate 304 is provided with a first sliding groove 317.

[0032] More specifically, when using this device, the inlet pipe 14 needs to be connected to the flue gas duct of the steam boiler. Then, the flue gas can enter the desulfurization treatment box 1 through the inlet pipe 14 and then be discharged through the exhaust port 15. The flue gas will then float upward inside the desulfurization treatment box 1. During the process of passing through the desulfurization treatment box 1, the flue gas needs to be treated. At this time, the alkaline slurry inside the circulating water tank 10 is driven by the circulating pump 11 to be transported through the first conveying pipe 12 to the inside of the second diversion frame 314 and the first diversion frame 313. The first diversion frame 313 and the second diversion frame 314 are rotated and clamped together to form a sealed space, and the alkaline slurry is transported to the inside of several connecting pipes 315. Then, it is atomized and sprayed out through several atomizing nozzles 316. The liquid curtain and droplets formed by the sprayed slurry can deeply remove dust from the flue gas and have a high removal efficiency for fine particulate matter, achieving a comprehensive and efficient flue gas purification effect.

[0033] During the spray purification of flue gas, the drive motor 5 drives the rotating shaft 6 on its output shaft to rotate synchronously. The top of the fixed disk 312 is fixedly connected to the bottom of the rotating shaft 6. Then, the rotating shaft 6 drives the fixed disk 312 to rotate. The fixed disk 312 then drives the first disk 303 to rotate synchronously through two fixed rods 307. Since the protrusion inside the first disk 303 is engaged with the inner wall of the reset groove 302, and the bottom of the fixed column 301 is fixedly connected to the top of the mounting bracket 2, the first disk 303 will move up and down to reset along with the inner wall of the reset groove 302 during rotation. The inside of the ring 306 is rotatably connected to the fixed column 3. During the upward movement of the first disc 303, the outer wall of 01 will compress the first spring 305. Then, the force of the compression of the first spring 305 will drive the first disc 303 to move downward quickly. At the same time, the first disc 303 will drive the several mounting plates 304 on its outer wall to rotate, and the outer wall of the squeeze bar 309 will correspond to the outer wall of the connecting pipe 315. Then, the mounting plate 304 will drive the connecting pipe 315 inside it to move synchronously. The end of the first conveying pipe 12 away from the circulating pump 11 is fixedly connected to the inside of the second diversion frame 314, so that the several connecting pipes 315 drive the first diversion frame 313 and the second diversion frame 314 to rotate directly relative to each other.

[0034] During the displacement process, the outer wall of the connecting pipe 315 will contact the outer wall of the extrusion rod 309 and then extrude it. The extrusion rod 309 will slide along the inner wall of the first slide groove 317 under pressure. At this time, the spacing between the atomizing nozzles 316 will change. After the connecting pipe 315 rotates to the end of the extrusion rod 309, it will pass the end. At this time, the extrusion rod 309 will no longer contact the connecting pipe 315. Then the connecting pipe 315 will reset along the inner wall of the first slide groove 317, thereby restoring the spacing between the atomizing nozzles 316. Through the continuous rotation of the first disc 303, the spacing between the atomizing nozzles 316 changes. Combined with its own rotation, the spraying range is increased, so that the atomized alkaline slurry can fill the interior of the desulfurization treatment box 1 as much as possible, ensuring the comprehensiveness of the alkaline slurry in desulfurizing and purifying the flue gas.

[0035] Example 2, please refer to Figures 1-5 Based on Embodiment 1, in this embodiment, the rinsing mechanism 4 includes a connecting ring 401 disposed on the outer wall of the atomizing nozzle 316, which drives the atomizing nozzle 316 to rotate at an angle to rinse the inner wall of the desulfurization treatment box 1 to remove impurities. A connecting plate 402 is fixedly connected to the bottom of the connecting ring 401, and a second spring 403 is fixedly connected to the side wall of the connecting plate 402. A fixing plate 404 is fixedly connected to the end of the second spring 403 away from the connecting plate 402. A rotating plate 405 is rotatably connected to the end of several mounting plates 304 away from the first disc 303 through a torsion spring. A second sliding groove 406 is opened inside the rotating plate 405.

[0036] Furthermore, the outer wall of the connecting ring 401 is slidably connected to the inner wall of the first slide groove 317, the top of the fixing plate 404 is fixedly connected to the bottom of the mounting plate 304, the inner wall of the second slide groove 406 corresponds to the inner wall of the first slide groove 317, the outer wall of the connecting ring 401 is slidably connected to the inner wall of the second slide groove 406, and the connecting ring 401 is fixedly connected to the outer wall of the corresponding connecting pipe 315.

[0037] More specifically, during the rotation of the first disc 303 and several mounting plates 304, the connecting pipe 315 inside the mounting plate 304 is squeezed and moves along the inner wall of the first slide groove 317. While the connecting pipe 315 moves, it drives the connecting ring 401 on its outer wall to move synchronously. At the same time, the connecting ring 401 will stretch the second spring 403 through the connecting plate 402 to generate tension. Then, the tension force can drive the connecting ring 401 to slide and reset along the inner wall of the first slide groove 317. After that, when the connecting ring 401 slides to the farthest end along the first slide groove 317, since the inner wall of the rotating plate 405 corresponds to the inner wall of the first slide groove 317, the connecting pipe 315 will drive the connecting ring 401 to slide to the inner wall of the second slide groove 406. After that, when the connecting ring 401 slides into the interior of the second slide groove 406;

[0038] The subsequent extrusion process causes the connecting ring 401 to rotate the rotating plate 405 at an angle relative to the end of the mounting plate 304. At this time, the torsion spring connecting them is compressed, and the spraying process of the atomizing nozzle 316 at the end of the connecting pipe 315 follows the angle rotation, aligning with the inner wall of the desulfurization treatment box 1. Then, when the outer wall of the connecting pipe 315 contacts and presses against the groove 310, the protrusion inside the first disc 303 is positioned vertically downwards inside the reset groove 302. Next, the first disc 303 will pass through the... The spring 305 moves rapidly downwards due to its elastic force, and at the same time, the first disc 303 moves downwards synchronously through the mounting plate 304, causing the atomizing nozzle 316 to spray water onto the inner wall of the desulfurization treatment box 1 while also moving downwards. This achieves the function of rinsing the inner wall of the desulfurization treatment box 1, removing particulate matter from the flue gas that adheres to the inner wall of the desulfurization treatment box 1. The rotation of the atomizing nozzle 316 ensures that the rinsing range can cover the entire circumference of the inner wall of the desulfurization treatment box 1, avoiding concentrated scaling areas on its inner wall.

[0039] Example 3, please refer to Figures 1-6 Based on Embodiment 2, in this embodiment, the shaking mechanism 9 includes a stop bar 904 disposed above the demister 8. The stop bar 904 is controlled to continuously strike the demister 8, causing the slurry adsorbed inside the demister 8 to shake off. A limit rod 902 is fixedly connected to the inner wall of the desulfurization treatment box 1. A beveled ring 901 is fixedly connected to the bottom of the demister 8. A connecting rod 903 is fixedly connected to the top of the inner wall of the desulfurization treatment box 1. The stop bar 904 is slidably connected to the inner wall of the connecting rod 903. A third spring 905 is fixedly connected to the top of the stop bar 904.

[0040] Furthermore, the outer wall of the limiting rod 902 corresponds to the inclined wall of the inclined ring 901, the end of the third spring 905 away from the abutment rod 904 is fixedly connected to the outer wall of the connecting rod 903, the outer wall of the rotating shaft 6 is fixedly connected to the first limiting block 7, and the interior of the demister 8 is slidably connected to the outer wall of the first limiting block 7.

[0041] More specifically, the flue gas, after being purified by spraying, continues to move upwards. Because the flue gas contains micro-droplets of slurry after spraying, it then contacts the surface of the demister 8 and passes through the internal gaps. The demister 8 has complex, bent blades inside, forcing the flue gas to constantly change direction as it flows past them, creating a swirling flow. This causes the droplets to directly impact the blade walls, achieving the separation of the droplets in the flue gas. The flue gas is then discharged through the exhaust port 15. During this process, the rotation of the shaft 6 causes the first limiting block 7 to rotate the demister 8 synchronously. As the demister 8 rotates against the inner wall of the desulfurization treatment box 1, it also drives the inclined ring 901 to rotate synchronously. Because the elastic force of the third spring 905 causes the end of the push rod 904 to constantly press against the upper surface of the demister 8, the bottom inclined surface of the inclined ring 901 is pressed and adhered. On the outer wall of the limiting rod 902, the rotation of the inclined ring 901 is limited by the limiting rod 902, thus lifting it upward. At the same time, it will drive the demister 8 to rise synchronously along the outer wall of the first limiting block 7. Then, the abutment rod 904 compresses the third spring 905. When the highest point of the inclined edge of the inclined ring 901 passes the limiting rod 902, the elastic force of the third spring 905 is released, causing the demister 8 to move downward quickly. Then, the demister 8 drives the inclined ring 901 to hit the outer wall of the limiting rod 902 quickly. During this process, the demister 8 will be subjected to vibration. The vibration can shake off the slurry droplets inside the demister 8. At the same time, the rotating demister 8 can further throw out the slurry droplets. It can effectively remove both liquid droplets and solid scale inside the demister 8, achieving a deep and thorough self-cleaning effect without the need for shutdown and isolation, which greatly improves the continuous operation reliability and production efficiency of the desulfurization purification system.

[0042] The working principle of this invention is as follows: When using this device, the inlet pipe 14 needs to be connected to the flue gas duct of the steam boiler. Then, the flue gas can enter the desulfurization treatment box 1 through the inlet pipe 14 and then be discharged through the exhaust port 15. The flue gas will then float upward inside the desulfurization treatment box 1. During the process of passing through the desulfurization treatment box 1, the flue gas needs to be treated. At this time, the alkaline slurry inside the circulating water tank 10 is driven by the circulating pump 11 to be transported through the first conveying pipe 12 to the inside of the second diversion frame 314 and the first diversion frame 313. The first diversion frame 313 and the second diversion frame 314 are rotated and clamped together to form a sealed space, and the alkaline slurry is transported to the inside of several connecting pipes 315. Then, it is atomized and sprayed out through several atomizing nozzles 316. The liquid curtain and droplets formed by the sprayed slurry can deeply remove dust from the flue gas and have a high removal efficiency for fine particulate matter, thus achieving a comprehensive and efficient flue gas purification effect.

[0043] During the spray purification of flue gas, the drive motor 5 drives the rotating shaft 6 on its output shaft to rotate synchronously. The top of the fixed disk 312 is fixedly connected to the bottom of the rotating shaft 6. Then, the rotating shaft 6 drives the fixed disk 312 to rotate. The fixed disk 312 then drives the first disk 303 to rotate synchronously through two fixed rods 307. Since the protrusion inside the first disk 303 is engaged with the inner wall of the reset groove 302, and the bottom of the fixed column 301 is fixedly connected to the top of the mounting bracket 2, the first disk 303 will move up and down to reset along with the inner wall of the reset groove 302 during rotation. The inside of the ring 306 is rotatably connected to the fixed column 3. During the upward movement of the first disc 303, the outer wall of 01 will compress the first spring 305. Then, the force of the compression of the first spring 305 will drive the first disc 303 to move downward quickly. At the same time, the first disc 303 will drive the several mounting plates 304 on its outer wall to rotate, and the outer wall of the squeeze bar 309 will correspond to the outer wall of the connecting pipe 315. Then, the mounting plate 304 will drive the connecting pipe 315 inside it to move synchronously. The end of the first conveying pipe 12 away from the circulating pump 11 is fixedly connected to the inside of the second diversion frame 314, so that the several connecting pipes 315 drive the first diversion frame 313 and the second diversion frame 314 to rotate directly relative to each other.

[0044] During the displacement process, the outer wall of the connecting pipe 315 will contact the outer wall of the extrusion rod 309 and then extrude it. The extrusion rod 309 will slide along the inner wall of the first slide groove 317 under pressure. At this time, the spacing between the atomizing nozzles 316 will change. After the connecting pipe 315 rotates to the end of the extrusion rod 309, it will pass the end. At this time, the extrusion rod 309 will no longer contact the connecting pipe 315. Then the connecting pipe 315 will reset along the inner wall of the first slide groove 317, thereby restoring the spacing between the atomizing nozzles 316. Through the continuous rotation of the first disc 303, the spacing between the atomizing nozzles 316 changes. Combined with its own rotation, the spraying range is increased, so that the atomized alkaline slurry can fill the interior of the desulfurization treatment box 1 as much as possible, ensuring the comprehensiveness of the alkaline slurry in desulfurizing and purifying the flue gas.

[0045] It should be noted that all the devices in this application are common devices on the market, and can be selected according to the needs of specific use. The circuit connection relationship of each device is a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can easily implement it. It belongs to the prior art and will not be described in detail.

[0046] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A flue gas desulfurization and circulation purification device for steam boilers, comprising a desulfurization treatment box (1), characterized in that: The inner wall of the desulfurization treatment box (1) is fixedly connected to the mounting frame (2), and the top of the mounting frame (2) is provided with a spraying mechanism (3). The inside of the spraying mechanism (3) is provided with a rinsing mechanism (4). The inner wall of the desulfurization treatment box (1) is rotatably connected to a demister (8), and the surface of the demister (8) is provided with a shaking mechanism (9). The side wall of the desulfurization treatment box (1) is fixedly installed with a circulating water tank (10), and the top of the circulating water tank (10) is fixedly installed with a circulating pump (11). The output end of the circulating pump (11) is fixedly connected to a first conveying pipe (12). The spraying mechanism (3) includes a plurality of atomizing nozzles (316) installed inside the desulfurization treatment box (1), and the atomizing nozzles (316) are controlled to move continuously during the spraying process; The flushing mechanism (4) includes a connecting ring (401) set on the outer wall of the atomizing nozzle (316), which drives the atomizing nozzle (316) to rotate at an angle to flush the inner wall of the desulfurization treatment box (1) to remove impurities. The shaking mechanism (9) includes a push rod (904) disposed above the demister (8), and the push rod (904) is controlled to continuously strike the demister (8) to shake off the slurry adsorbed inside the demister (8).

2. The steam boiler flue gas desulfurization and circulation purification device according to claim 1, characterized in that, The spraying mechanism (3) includes a fixed column (301), and a reset groove (302) is provided on the outer wall of the fixed column (301). A first disc (303) is slidably connected to the outer wall of the fixed column (301), and a protrusion is fixedly connected inside the first disc (303). The outer wall of the protrusion slides against the inner wall of the reset groove (302). Several mounting plates (304) are fixedly connected to the outer wall of the first disc (303). A first spring (305) is fixedly connected to the top of the first disc (303), and a ring (306) is fixedly connected to the end of the first spring (305) away from the first disc (303). Two fixed rods (307) are fixedly connected through the interior of the first disc (303). The bottom outer walls of the two fixed rods (307) are rotatably connected to a second disc (308), and the second disc (308) is... The outer wall of the device is fixedly connected to several extrusion inclined rods (309). The outer wall of the several extrusion inclined rods (309) away from the second disc (308) is provided with a groove (310). The outer wall of the fixed column (301) is fixedly connected to a second limiting block (311). The outer walls of the two fixed rods (307) are slidably connected to a fixed disc (312). The tops of several mounting plates (304) are fixedly connected to a first diversion frame (313). The top of the first diversion frame (313) is rotatably connected to a second diversion frame (314). The outer wall of the first diversion frame (313) is fixedly connected to several connecting pipes (315). Several atomizing nozzles (316) are fixedly installed at the end of the corresponding connecting pipe (315) away from the first diversion frame (313). The inside of the mounting plate (304) is provided with a first sliding groove (317).

3. The steam boiler flue gas desulfurization and circulation purification device according to claim 2, characterized in that, A motor (5) is fixedly installed on the top of the desulfurization treatment box (1), and the output shaft of the motor (5) is fixedly connected to a rotating shaft (6). The end of the first conveying pipe (12) away from the circulating pump (11) is fixedly connected to the inside of the second diversion frame (314). The bottom of the fixed column (301) is fixedly connected to the top of the mounting frame (2). The inside of the ring (306) is rotatably connected to the outer wall of the fixed column (301). The outer wall of the extrusion inclined rod (309) corresponds to the outer wall of the connecting pipe (315). The top of the fixed plate (312) is fixedly connected to the bottom of the rotating shaft (6).

4. The steam boiler flue gas desulfurization and circulation purification device according to claim 3, characterized in that, A connecting plate (402) is fixedly connected to the bottom of the connecting ring (401). A second spring (403) is fixedly connected to the side wall of the connecting plate (402). A fixing plate (404) is fixedly connected to the end of the second spring (403) away from the connecting plate (402). A rotating plate (405) is rotatably connected to the end of each of the mounting plates (304) away from the first disc (303) through a torsion spring. A second sliding groove (406) is provided inside the rotating plate (405).

5. The steam boiler flue gas desulfurization and circulation purification device according to claim 4, characterized in that, The outer wall of the connecting ring (401) is slidably connected to the inner wall of the first slide groove (317), the top of the fixing plate (404) is fixedly connected to the bottom of the mounting plate (304), the inner wall of the second slide groove (406) corresponds to the inner wall of the first slide groove (317), the outer wall of the connecting ring (401) is slidably connected to the inner wall of the second slide groove (406), and the connecting ring (401) is fixedly connected to the outer wall of the corresponding connecting pipe (315).

6. The steam boiler flue gas desulfurization and circulation purification device according to claim 5, characterized in that, A limiting rod (902) is fixedly connected to the inner wall of the desulfurization treatment box (1), a beveled ring (901) is fixedly connected to the bottom of the demister (8), a connecting rod (903) is fixedly connected to the top of the inner wall of the desulfurization treatment box (1), a push rod (904) is slidably connected to the inner wall of the connecting rod (903), and a third spring (905) is fixedly connected to the top of the push rod (904).

7. The steam boiler flue gas desulfurization and circulation purification device according to claim 6, characterized in that, The outer wall of the limiting rod (902) corresponds to the inclined wall of the inclined ring (901). The end of the third spring (905) away from the abutment rod (904) is fixedly connected to the outer wall of the connecting rod (903). The outer wall of the rotating shaft (6) is fixedly connected to the first limiting block (7). The interior of the demister (8) is slidably connected to the outer wall of the first limiting block (7).

8. The steam boiler flue gas desulfurization and circulation purification device according to claim 7, characterized in that, The bottom of the circulating water tank (10) is fixedly connected to a second conveying pipe (13), and the end of the second conveying pipe (13) away from the circulating water tank (10) is fixedly connected to the inside of the desulfurization treatment tank (1). An air inlet pipe (14) is fixedly connected through the outer wall of the desulfurization treatment tank (1), and an exhaust hole (15) is fixedly connected through the outer wall of the desulfurization treatment tank (1).

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