Multistage atomization semi-dry desulfurization device

Abstract

This invention relates to the field of desulfurization equipment and discloses a multi-stage atomizing semi-dry desulfurization device, including a feed hopper, a Venturi reactor connected to the feed hopper, a flue gas conveying pipe connected to the top of the Venturi reactor, an isolation conveying tank located on the side of the Venturi reactor, a bag filter dust collector connected to the bottom of the isolation conveying tank, a nozzle connecting block located at the bottom of the Venturi reactor, and an adjusting device located at the end of the nozzle connecting block at the bottom of the Venturi reactor. This invention uses a trigger element inside the adjusting device to detect falling solids, then uses a centrifugal semi-circular component to crush the falling objects, and uses a venting component to drive the entire device to rotate, achieving separation of large solid particles. Smaller powder particles continue to enter the Venturi reactor for reaction, allowing the powder to re-enter the interior of the Venturi reactor through the venting component, forming the Venturi effect again and achieving a multi-stage atomization effect.

Description

Technical Field

[0001] This invention relates to the field of desulfurization equipment technology, and more specifically, to a multi-stage atomization semi-dry desulfurization device. Background Technology

[0002] Semi-dry desulfurization (SDF) units are flue gas treatment devices that fall between dry and wet methods. Their core principle involves atomizing lime slurry and spraying it into the absorption tower to react with sulfur dioxide in the flue gas. Simultaneously, the heat from the flue gas evaporates moisture, ultimately generating dry desulfurization products. It combines the high efficiency of wet methods with the zero wastewater discharge of dry methods. Building upon this, multi-stage atomization semi-dry desulfurization units optimize nozzle structure and employ a staged liquid supply strategy to break the absorbent droplets into smaller particles, significantly increasing the gas-liquid contact area. Multi-stage atomization not only improves desulfurization efficiency but also allows for more precise control of reaction temperature and humidity, preventing scaling within the tower. In short, multi-stage atomization technology represents a refined upgrade to traditional semi-dry desulfurization.

[0003] A patent application with publication number CN114699906B discloses a stable Venturi device for semi-dry desulfurization. Through fluid simulation, steady-state analysis of the velocity of the Venturi cross section is performed to optimize and form a reasonable Venturi tube. The Venturi tubes are arranged radially and in a ring. The simulation calculation forms a "candle flame" with symmetrical gas column and velocity deviation.

[0004] Although the above-mentioned device optimizes the Venturi tube, during use, the neutralizing solution sprayed from the outside of the Venturi tube may solidify due to prolonged use, thus falling into the inside of the pipe and even accumulating. This can affect the subsequent use of the Venturi tube, causing the sprayed liquid pressure to decrease and preventing it from fully contacting and neutralizing the high-temperature flue gas. Summary of the Invention

[0005] This invention provides a multi-stage atomizing semi-dry desulfurization device, which solves the problem in related technologies where the neutralizing solution sprayed from the venturi tube may solidify due to prolonged use, thus falling into the inside of the tube and even accumulating, affecting the subsequent use of the venturi tube, reducing the sprayed liquid pressure, and preventing it from fully contacting and neutralizing the high-temperature flue gas.

[0006] This invention provides a multi-stage atomizing semi-dry desulfurization device, including a feed hopper, a Venturi reactor connected to the feed hopper, a flue gas conveying pipe connected to the top of the Venturi reactor, a bag filter dust collector connected to the end of the flue gas conveying pipe, an exhaust pipe connected to the side of the bag filter dust collector, an isolation conveying tank provided on the side of the Venturi reactor, the bottom of the bag filter dust collector connected to the isolation conveying tank, a nozzle connecting block provided at the lower part of the Venturi reactor, an adjusting device provided at the end of the nozzle connecting block at the bottom of the Venturi reactor, the feed hopper and the Venturi reactor connected by a first connecting pipe, and the adjusting device used to scrape the inner wall of the connection between the first connecting pipe and the Venturi reactor. The adjustment device includes a trigger, a mounting ring, a lifting ring, a centrifugal semicircular component, a venting component, and a transmission component. The trigger and the mounting ring are rotatably mounted on the inner wall of the first connecting pipe. The transmission component is provided on the inner wall of the mounting ring. The centrifugal semicircular component is rotatably mounted on the inner wall of the first connecting pipe located at the lower part of the mounting ring. The bottom of the centrifugal semicircular component is connected to the venting component.

[0007] As a further optimization of the present invention, a nozzle is fixedly installed on the first connecting pipe, and a nozzle connecting block is fixedly installed on the side of the nozzle. The nozzle connecting block is installed on the support frame supporting the Venturi reactor.

[0008] As a further optimization of the present invention, a first funnel is fixedly installed inside the first connecting pipe, and an ejector pipe is fixedly installed on the top of the first funnel.

[0009] As a further optimization of the present invention, the trigger includes a first fixing plate rotatably installed inside the first connecting pipe at the lower part of the nozzle, a second connecting block arranged in a circumferential array on the outer side of the first fixing plate, a slot provided at the lower part of the second connecting block, a scraper slidably installed inside the first fixing plate, a plurality of first connecting blocks fixedly installed on the inner wall of the first fixing plate, and a first rotating block rotatably installed on the outer side of the first connecting block.

[0010] As a further optimization of the present invention, the centrifugal semicircular component includes a semicircular block rotatably installed inside the first connecting pipe at the lower part of the lifting ring, the inner circumferential array of the semicircular block being provided with centrifugal sliding grooves, and the bottom circumferential array of the semicircular block being provided with a first hole.

[0011] As a further optimization of the present invention, the venting component includes a third connecting pipe fixedly installed at the bottom of the first hole, a toothed ring plate fixedly installed at the bottom of the third connecting pipe, and a second connecting pipe provided on the inner wall of the toothed ring plate, the second connecting pipe communicating with the third connecting pipe.

[0012] As a further optimization of the present invention, the transmission component includes a second rack slidably mounted inside the mounting ring, a second gear symmetrically arranged inside the mounting ring, a fourth rack and a third rack symmetrically arranged slidably mounted inside the mounting ring, a first connecting post fixedly mounted at the bottom of the third rack, a second connecting post fixedly mounted at the top of the fourth rack, the top of the second connecting post connected to the scraper, the bottom of the first connecting post connected to the lifting ring, and the second rack meshing with the two second gears.

[0013] As a further optimization of the present invention, the venting component includes a third fixing block fixedly installed on the inner wall of the first connecting pipe, a first motor fixedly installed inside the third fixing block, a first gear fixedly installed at the end of the first motor, and teeth fixedly installed on the lower inner wall of the toothed ring plate, with the first gear meshing with the teeth.

[0014] As a further optimization of the present invention, a dividing groove is provided on the first connecting pipe at the upper part of the semicircular block.

[0015] As a further optimization of the present invention, a torsion spring is provided at the connection position between the first rotating block and the first connecting block, and a torsion spring is provided at the connection position between the second connecting block and the first fixing plate.

[0016] The beneficial effects of this invention are as follows: The multi-stage atomizing semi-dry desulfurization device of this invention detects falling solids by adjusting the trigger inside the device. Then, the falling objects are crushed by a centrifugal semi-circular component. The entire device is rotated by a venting component, which separates large solid particles. Small powder particles continue to enter the Venturi reactor for further reaction. The venting component is connected to the centrifugal semi-circular component, which allows the powder to re-enter the Venturi reactor through the venting component, forming the Venturi effect again and achieving the effect of multi-stage atomization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall shape of the device of the present invention; Figure 2 This is a schematic diagram of the overall device installation of the present invention; Figure 3 This is a schematic diagram of the installation of the adjusting device of the present invention; Figure 4 This is a connection diagram of the adjusting device of the present invention; Figure 5 This is a schematic diagram of the internal structure of the regulating device of the present invention; Figure 6 This is an internal structural diagram of the first connecting tube of the present invention; Figure 7This is a schematic diagram of the internal structure of the trigger element of the present invention; Figure 8 This is a schematic diagram of the internal structure of the centrifugal semicircular component of the present invention; Figure 9 This is a schematic diagram of the internal structure of the ventilation component of the present invention.

[0018] In the picture: 1. Feed hopper; 11. Venturi reactor; 12. Flue gas conveying pipe; 13. Bag filter dust collector; 14. Exhaust pipe; 15. Isolation conveying tank; 16. Nozzle connecting block; 161. Nozzle; 17. First funnel; 171. Spray pipe; 18. First connecting pipe; 181. Dividing groove; 2. Adjustment device; 21. Trigger; 211. First fixed plate; 212. First rotating block; 213. First connecting block; 214. Second connecting block; 215. Scraper; 22. Mounting ring; 23. Lifting ring; 24. Centrifugal semicircular component; 241. Semicircular block; 242. Centrifugal chute; 243. First hole; 25. Ventilation component; 251. Toothed ring plate; 252. Second connecting pipe; 253. Third connecting pipe; 254. Tooth; 255. Third fixed block; 256. First motor; 257. First gear; 26. Transmission component; 261. Second rack; 262. Second gear; 263. Third rack; 264. First connecting column; 265. Fourth rack; 266. Second connecting column. Detailed Implementation

[0019] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0020] like Figures 1 to 4As shown in the figure, a multi-stage atomizing semi-dry desulfurization device according to an embodiment of the present invention includes a feed hopper 1, a Venturi reactor 11 connected to the feed hopper 1, a flue gas conveying pipe 12 connected to the top of the Venturi reactor 11, a bag filter dust collector 13 connected to the end of the flue gas conveying pipe 12, an exhaust pipe 14 connected to the side of the bag filter dust collector 13, an isolation conveying tank 15 provided on the side of the Venturi reactor 11, the bottom of the bag filter dust collector 13 connected to the isolation conveying tank 15, a nozzle connecting block 16 provided at the lower part of the Venturi reactor 11, an adjusting device 2 provided at the end of the nozzle connecting block 16 located at the bottom of the Venturi reactor 11, the feed hopper 1 and the Venturi reactor 11 are connected by a first connecting pipe 18, and the adjusting device 2 is used to scrape the inner wall of the connection between the first connecting pipe 18 and the Venturi reactor 11. like Figures 5 to 9 As shown, the adjustment device 2 includes a trigger 21, a mounting ring 22, a lifting ring 23, a centrifugal semicircular component 24, a venting component 25, and a transmission component 26. The trigger 21 and the mounting ring 22 are rotatably mounted on the inner wall of the first connecting pipe 18. The transmission component 26 is provided on the inner wall of the mounting ring 22. The centrifugal semicircular component 24 is rotatably mounted on the inner wall of the first connecting pipe 18 located at the lower part of the mounting ring 22. The venting component 25 is connected to the bottom of the centrifugal semicircular component 24.

[0021] It should be noted that the first connecting pipe 18 is equipped with an outlet pipe 171. When flue gas is ejected from the first connecting pipe 18, a neutralizing solution is ejected from the nozzle 161. This allows the flue gas inside the first connecting pipe 18 to pass through the outlet pipe 171 and come into contact with the neutralizing solution, thus entering the Venturi reactor 11 to achieve flue gas desulfurization. The flue gas that has been neutralized and formed into a solid then enters the Venturi reactor 11 and then the flue gas conveying pipe 12, thereby desulfurizing the bag filter. The interior of the dust collection box 13 provides isolation. When the liquid sprayed from the nozzle 161 and the spray pipe 171 is neutralized, small amounts of solids and solution may still drip onto the top of the trigger 21, causing blockage of the nozzle 161 and the spray pipe 171. Therefore, a first rotating block 212 and a scraper 215 are provided on the trigger 21. When the first rotating block 212 rotates to a predetermined angle due to the weight of the solids, its bottom connecting rod will touch a micro switch (not shown in the figure) installed on the side wall of the mounting ring 22. After the micro switch is triggered, it sends a start signal to the controller (not shown in the figure). The controller then controls the first motor 256 to start rotating. The first motor 256 drives the entire centrifugal semicircular part 24 and the ventilation part 25 to rotate through the meshing of the first gear 257 and the teeth 254, realizing the subsequent crushing and separation process.When the solids are removed, the first rotating block 212 resets, the micro switch is disconnected, and the controller stops the first motor 256. When a large number of impurity particles accumulate on the top of the trigger 21, it can open the trigger 21. The opening of the trigger 21 activates the vent 25 to rotate. The rotation of the vent 25 drives the centrifugal semicircular part 24, the lifting ring 23, the mounting ring 22, and the trigger 21 to rotate, allowing the impurities on the trigger 21 to enter the interior of the centrifugal semicircular part 24. As the trigger 21 opens, it drives the transmission part 26 to rise and fall, thereby driving the scraper 215 to rise. The rising scraper 215 can scrape the inner wall of the first connecting pipe 18 to prevent solids from adhering. The deposited objects fall into the interior of the centrifugal semicircular part 24, where they can be broken up by the rotation of the centrifugal semicircular part 24. The rising and falling of the transmission part 26 can also drive the lifting ring 23 to rise, causing large pieces of solids to rotate to the outside of the first connecting pipe 18 by centrifugal force. Then, they are connected to the vent 25 through the centrifugal semicircular part 24, and the second connecting... The outlet end of pipe 252 extends to near the throat of nozzle 171. Utilizing the negative pressure generated by the high-speed airflow within nozzle 171, the powder is drawn in and re-injected into the Venturi reactor 11, thus re-enabling the function of the Venturi tube. Meanwhile, the rising vent 25 connects the centrifugal semicircular component 24 to the vent 25, allowing the powder pulverized inside the centrifugal semicircular component 24 to re-enter the Venturi reactor 11 through the vent 25, improving reaction efficiency and achieving a multi-stage atomization effect. This device... The falling solid is detected by the trigger 21 inside the regulating device 2. Then, the falling object is crushed by the centrifugal semicircular part 24. The entire device is rotated by the venting part 25, which separates the large solid particles. The small powder particles continue to enter the Venturi reaction vessel 11 for reaction. The venting part 25 is connected to the centrifugal semicircular part 24, so that the powder can re-enter the interior of the Venturi reaction vessel 11 through the venting part 25, forming the Venturi effect again and achieving the effect of multi-stage atomization.

[0022] like Figures 2 to 5 As shown, a nozzle 161 is fixedly installed on the first connecting pipe 18, and a nozzle connecting block 16 is fixedly installed on the side of the nozzle 161. The nozzle connecting block 16 is installed on the support frame supporting the Venturi reactor 11.

[0023] It should be noted that a nozzle 161 is fixedly installed on the first connecting pipe 18, and a nozzle connecting block 16 is fixedly installed on the side of the nozzle 161. The nozzle connecting block 16 is installed on the support frame supporting the Venturi reaction vessel 11, and the isolation delivery tank 15 is connected to the nozzle connecting block 16, so that the neutralizing solvent of the liquid can be sprayed out from the nozzle 161.

[0024] like Figures 4 to 5As shown, a first funnel 17 is fixedly installed inside the first connecting pipe 18, and an ejector pipe 171 is fixedly installed on the top of the first funnel 17.

[0025] It should be noted that a first funnel 17 is fixedly installed inside the first connecting pipe 18, and a spray pipe 171 is fixedly installed on the top of the first funnel 17. The design of the first funnel 17, the spray pipe 171, and the nozzle 161 forms a Venturi effect.

[0026] like Figure 5 and Figure 7 As shown, the trigger 21 includes a first fixing plate 211 rotatably mounted inside the first connecting pipe 18 and located below the nozzle 161. The outer circumferential array of the first fixing plate 211 is provided with second connecting blocks 214. The lower part of the second connecting blocks 214 is provided with a slot. A scraper 215 is slidably mounted inside the first fixing plate 211. A plurality of first connecting blocks 213 are fixedly mounted on the inner wall of the first fixing plate 211. A first rotating block 212 is rotatably mounted on the outside of the first connecting blocks 213.

[0027] It should be noted that when the solid neutralizing solvent falls onto the first rotating block 212, gravity compresses the first rotating block 212, causing it to rotate around the first connecting block 213. A rotating connecting rod is provided at the bottom of the first rotating block 212, with its end connected to the transmission component 26. This causes the transmission component 26 to slide against the inner wall of the mounting ring 22, which in turn lifts the scraper 215, causing it to rise and scrape the inner wall of the first connecting pipe 18. This prevents the solid solvent from adhering to the positions of the spray pipe 171 and the nozzle 161, thus preventing a reduction in atomization effect. Torsion springs are provided at the connection points between the second connecting block 214 and the first fixing plate 211, as well as between the first connecting block 213 and the first rotating block 212, ensuring that the first fixing plate 211 and the second connecting block 214, and the first rotating block 212 and the first connecting block 213, maintain a constant position. Figure 7 The state.

[0028] like Figure 5 and Figure 8 As shown, the centrifugal semicircular component 24 includes a semicircular block 241 rotatably installed inside the first connecting pipe 18 and located below the lifting ring 23. The inner circumferential array of the semicircular block 241 is provided with centrifugal sliding grooves 242, and the bottom circumferential array of the semicircular block 241 is provided with first holes 243.

[0029] It should be noted that the centrifugal semicircular component 24 includes a semicircular block 241 rotatably installed inside the first connecting pipe 18 at the lower part of the lifting ring 23. The semicircular block 241 has a centrifugal chute 242 arranged in a circumferential array inside, and a first hole 243 arranged in a circumferential array at the bottom of the semicircular block 241. When the semicircular block 241 rotates, it can drive the centrifugal chute 242 to rotate. The rotation of the centrifugal chute 242 can break up the solids falling inside the semicircular block 241. The unbroken solids move towards the upper edge of the centrifugal chute 242 under the action of centrifugal force, thereby moving out of the interior of the first connecting pipe 18. This prevents the solids from entering the interior of the Venturi reactor 11 and causing insufficient reaction in the reactor. The venting component 25 is connected to the first hole 243, so that the broken powder can re-enter the interior of the Venturi reactor 11 under the action of the venting component 25 for the purpose of reaction again.

[0030] like Figure 5 He Ru Figures 8 to 9 As shown, the ventilation component 25 includes a third connecting pipe 253 fixedly installed at the bottom of the first hole 243. A toothed ring plate 251 is fixedly installed at the bottom of the third connecting pipe 253. A second connecting pipe 252 is provided on the inner wall of the toothed ring plate 251. The second connecting pipe 252 communicates with the third connecting pipe 253.

[0031] It should be noted that when the first rotating block 212 rotates, the top of the semicircular block 241 can contact the outside of the first connecting pipe 18 through the third connecting pipe 253, the second connecting pipe 252, and the toothed ring plate 251, thereby forming the Venturi effect again under the action of the ejector pipe 171, so that the powder is transported into the interior of the Venturi reaction vessel 11.

[0032] like Figures 5 to 7 As shown, the transmission component 26 includes a second rack 261 slidably mounted inside the mounting ring 22, a second gear 262 symmetrically arranged inside the mounting ring 22, a fourth rack 265 and a third rack 263 symmetrically arranged slidably mounted inside the mounting ring 22, a first connecting post 264 fixedly mounted at the bottom of the third rack 263, a second connecting post 266 fixedly mounted at the top of the fourth rack 265, the top of the second connecting post 266 connected to the scraper 215, the bottom of the first connecting post 264 connected to the lifting ring 23, and the second rack 261 meshing with the two second gears 262.

[0033] It should be noted that the bottom of the first rotating block 212 is provided with a rotatably connected rod. The end of this rod is rotatably connected to the side of the second rack 261. Therefore, when the first rotating block 212 rotates, it can drive the second rack 261 to descend, thereby driving the two second gears 262 to rotate. The rotation of the second gears 262 can drive the fourth rack 265 to rise, thereby driving the scraper 215 to rise and rotate, so that the scraper 215 scrapes the inner wall of the first connecting tube 18. Meanwhile, the rotation of the other second gear 262 drives the third rack 263 to rise, thereby causing the lifting ring 23 to rise. Under the action of the semicircular block 241, the solidified solid solvent can be rotated out of the interior of the first connecting tube 18 by centrifugal force.

[0034] like Figure 9 As shown, the ventilation component 25 includes a third fixing block 255 fixedly installed on the inner wall of the first connecting pipe 18. A first motor 256 is fixedly installed inside the third fixing block 255. A first gear 257 is fixedly installed at the end of the first motor 256. Teeth 254 are fixedly installed on the lower inner wall of the toothed ring plate 251. The first gear 257 meshes with the teeth 254.

[0035] It should be noted that when the first motor 256 starts, it drives the first gear 257 to rotate. The first gear 257 meshes with the teeth 254, thereby driving the gear ring plate 251 to rotate. The gear ring plate 251 drives the centrifugal semicircular part 24 to rotate through the second connecting pipe 252 and the third connecting pipe 253. The top of the semicircular block 241 is slidably connected to the lifting ring 23, thereby driving the lifting ring 23 to rotate. The rotation of the lifting ring 23 drives the trigger 21 to rotate through the mounting ring 22, thus achieving the purpose of overall rotation.

[0036] like Figure 5 As shown, a dividing groove 181 is provided on the first connecting pipe 18 at the upper part of the semicircular block 241.

[0037] It should be noted that a dividing groove 181 is provided on the first connecting tube 18 at the upper part of the semicircular block 241, so that the solid solvent rotates out of the interior of the first connecting tube 18 under the action of the centrifugal force of the semicircular block 241.

[0038] like Figure 7 As shown, a torsion spring is provided at the connection position between the first rotating block 212 and the first connecting block 213, and a torsion spring is provided at the connection position between the second connecting block 214 and the first fixing plate 211.

[0039] It should be noted that a torsion spring is provided at the connection position between the first rotating block 212 and the first connecting block 213, and a torsion spring is provided at the connection position between the second connecting block 214 and the first fixing plate 211, so that the first fixing plate 211 and the second connecting block 214 and the first rotating block 212 and the first connecting block 213 maintain a certain distance. Figure 7 The state.

[0040] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the embodiments described above, all of which are within the protection scope of the present invention.

Claims

1. A multi-stage atomizing semi-dry desulfurization device, comprising a feed hopper (1), characterized in that: A Venturi reactor (11) is connected to the feed hopper (1). A flue gas conveying pipe (12) is connected to the top of the Venturi reactor (11). A bag filter dust collector (13) is connected to the end of the flue gas conveying pipe (12). An exhaust pipe (14) is connected to the side of the bag filter dust collector (13). An isolation conveying tank (15) is provided on the side of the Venturi reactor (11). The bottom of the bag filter dust collector (13) is connected to the isolation conveying tank (14). 5) Connection: A nozzle connecting block (16) is provided at the lower part of the Venturi reaction vessel (11). An adjusting device (2) is provided at the end of the nozzle connecting block (16) at the bottom of the Venturi reaction vessel (11). The feed hopper (1) and the Venturi reaction vessel (11) are connected by a first connecting pipe (18). The adjusting device (2) is used to scrape the inner wall of the connection between the first connecting pipe (18) and the Venturi reaction vessel (11). The adjustment device (2) includes a trigger (21), a mounting ring (22), a lifting ring (23), a centrifugal semicircular part (24), a venting part (25), and a transmission part (26). The trigger (21) and the mounting ring (22) are rotatably mounted on the inner wall of the first connecting pipe (18). The transmission part (26) is provided on the inner wall of the mounting ring (22). The centrifugal semicircular part (24) is rotatably mounted on the inner wall of the first connecting pipe (18) located at the lower part of the mounting ring (22). The bottom of the centrifugal semicircular part (24) is connected to the venting part (25).

2. The multi-stage atomizing semi-dry desulfurization device according to claim 1, characterized in that: A nozzle (161) is fixedly installed on the first connecting pipe (18), and a nozzle connecting block (16) is fixedly installed on the side of the nozzle (161). The nozzle connecting block (16) is installed on the support frame that supports the Venturi reactor (11).

3. The multi-stage atomizing semi-dry desulfurization device according to claim 2, characterized in that: The first funnel (17) is fixedly installed inside the first connecting pipe (18), and the top of the first funnel (17) is fixedly installed with a spray pipe (171).

4. The multi-stage atomizing semi-dry desulfurization device according to claim 3, characterized in that: The trigger (21) includes a first fixing plate (211) rotatably mounted inside the first connecting pipe (18) at the lower part of the nozzle (161). The outer circumferential array of the first fixing plate (211) is provided with second connecting blocks (214). The lower part of the second connecting blocks (214) is provided with a slot. A scraper (215) is slidably mounted inside the first fixing plate (211). A plurality of first connecting blocks (213) are fixedly mounted on the inner wall of the first fixing plate (211). A first rotating block (212) is rotatably mounted on the outside of the first connecting blocks (213).

5. The multi-stage atomizing semi-dry desulfurization device according to claim 4, characterized in that: The centrifugal semicircular component (24) includes a semicircular block (241) rotatably installed inside the first connecting pipe (18) at the lower part of the lifting ring (23). The semicircular block (241) has a centrifugal sliding groove (242) arranged in the inner circumferential array, and the bottom circumferential array of the semicircular block (241) has a first hole (243). The semicircular block (241) and the lifting ring (23) are slidably connected by a rod.

6. The multi-stage atomizing semi-dry desulfurization device according to claim 5, characterized in that: The ventilation component (25) includes a third connecting pipe (253) fixedly installed at the bottom of the first hole (243). A toothed ring plate (251) is fixedly installed at the bottom of the third connecting pipe (253). A second connecting pipe (252) is provided on the inner wall of the toothed ring plate (251). The second connecting pipe (252) is connected to the third connecting pipe (253).

7. The multi-stage atomizing semi-dry desulfurization device according to claim 6, characterized in that: The transmission component (26) includes a second rack (261) slidably mounted inside the mounting ring (22), a second gear (262) symmetrically mounted inside the mounting ring (22), a fourth rack (265) and a third rack (263) symmetrically mounted inside the mounting ring (22), a first connecting post (264) fixedly mounted at the bottom of the third rack (263), a second connecting post (266) fixedly mounted at the top of the fourth rack (265), the top of the second connecting post (266) being connected to the scraper (215), the bottom of the first connecting post (264) being connected to the lifting ring (23), and the second rack (261) meshing with the two second gears (262).

8. The multi-stage atomizing semi-dry desulfurization device according to claim 7, characterized in that: The ventilation component (25) includes a third fixing block (255) fixedly installed on the inner wall of the first connecting pipe (18). A first motor (256) is fixedly installed inside the third fixing block (255). A first gear (257) is fixedly installed at the end of the first motor (256). Teeth (254) are fixedly installed on the lower inner wall of the toothed ring plate (251). The first gear (257) meshes with the teeth (254).

9. A multi-stage atomizing semi-dry desulfurization device according to claim 8, characterized in that: A dividing groove (181) is provided on the first connecting pipe (18) at the upper part of the semicircular block (241).

10. A multi-stage atomizing semi-dry desulfurization device according to claim 9, characterized in that: A torsion spring is provided at the connection position between the first rotating block (212) and the first connecting block (213), and a torsion spring is provided at the connection position between the second connecting block (214) and the first fixing plate (211).

Images