Anti-scaling type desulfurization spraying device

Abstract

The invention discloses an anti-scaling type desulfurization spraying device which comprises a desulfurization tower shell, high-pressure spray head assemblies and a seawater input pipe, a lower cone is arranged at the bottom of the desulfurization tower shell, a seawater outlet is formed in the center of the lower cone, and the multiple high-pressure spray head assemblies are evenly installed on the seawater input pipe. An upper cone is arranged at the top of the desulfurizing tower shell; the high-pressure spray head assembly comprises an upper connector at the bottom, a sleeve in threaded connection with the upper connector, a rotating shaft mounted in the sleeve, an adapter in threaded connection with the front end of the rotating shaft, and a spray head cap mounted at the upper end of the adapter; through a rotating shaft and an adapter structure in the high-pressure spray head assembly, and a spirally arranged channel and a conical nozzle on a spray head cap, seawater can be sprayed into flue gas in a more uniform and more efficient manner, so that the desulfurization efficiency is improved; meanwhile, due to the design, accumulation and retention of seawater in the spraying process can be reduced, and then the risk of scaling is reduced.

Description

Technical Field

[0001] The invention relates to the field of chemical dispersing devices, in particular to an anti-scaling type desulfurization spray device. Background Art

[0002] In existing desulfurization spray devices, especially in systems using seawater for desulfurization treatment, the salt and other minerals contained in seawater easily form scale inside the spray device during the desulfurization process. These scales not only affect the desulfurization efficiency, but also increase the difficulty of equipment maintenance and cleaning, thereby reducing the operating stability and service life of the overall system.

[0003] Traditional desulfurization spray devices often lack effective anti-scaling design, which leads to the accumulation of a large amount of scale in the spray device, such as the nozzle, pipeline, tower body, etc. during long-term operation, especially when treating flue gas with high salt or high mineral content. These scales will reduce the spray area, reduce the spray efficiency, and may even clog the nozzle, causing the system to fail to operate normally. Summary of the invention

[0004] The object of the present invention is to provide an anti-scaling desulfurization spray device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-scaling desulfurization spray device, comprising a desulfurization tower shell, a high-pressure nozzle assembly and a seawater inlet pipe, a lower cone is arranged at the bottom of the desulfurization tower shell, and a seawater outlet is arranged at the center of the lower cone, three groups of observation ports are evenly arranged on the side of the desulfurization tower shell, and two groups of seawater inlet pipes are installed on the desulfurization tower shell between the two upper groups of observation ports, and multiple groups of high-pressure nozzle assemblies are evenly installed on the seawater inlet pipes, an upper cone is arranged on the top of the desulfurization tower shell, and a flue gas outlet is arranged in the middle of the upper cone, the side of the desulfurization tower shell is connected to the flue gas inlet pipe through a shrimp elbow, and a flue gas inlet is arranged at the upper end of the flue gas inlet pipe, the high-pressure nozzle assembly comprises an upper interface at the bottom, a sleeve threaded on the upper interface, a rotating shaft installed inside the sleeve, and a converter threaded on the front end of the rotating shaft, a nozzle cap installed on the upper end of the converter, and three groups of nozzles are installed on the upper end of the nozzle cap.

[0006] Furthermore, a shaft interface for connecting the shaft is provided at the rear end of the adapter, and a nozzle cap screw interface for screwing the nozzle cap is provided on the outer side of the middle part of the adapter, and two sets of sealing pad chambers are provided on the adapter at the front end of the nozzle cap screw interface, and a pressurized chamber with a truncated cone structure is provided at the front end of the adapter.

[0007] Furthermore, a swirl chamber is arranged inside the nozzle cap, and the swirl chamber is connected with a pressurized chamber arranged inside the adapter, and three groups of spirally arranged channels are arranged on the nozzle cap, and the three groups of channels are connected to the nozzles respectively.

[0008] Furthermore, the nozzle is a conical nozzle, the length of the straight section of the nozzle is between 1 and 3 times the nozzle diameter, and the nozzle convergence angle ranges between 10 and 40 degrees.

[0009] Furthermore, the flue gas input pipe and the shrimp elbow are made of nickel-based alloy N08031, and the desulfurization tower shell, upper cone and lower cone are welded with duplex stainless steel S32750.

[0010] Furthermore, two sets of thrust ball bearings are installed at the connection between the rotating shaft and the sleeve, and two sets of repelling permanent magnet rings are installed on the sleeve and the rotating shaft between the two sets of thrust ball bearings. At the same time, a sealing ring is arranged at the connection between the rotating shaft and the upper interface outside the thrust ball bearing, and a sealing ring is arranged at the connection between the rotating shaft and the sleeve.

[0011] Furthermore, two groups of detachable filter screens are installed inside the upper end of the smoke input pipe, and the smoke input pipe is fixed by a bracket, and the shrimp bend pipe at the bottom is fixed by a stand.

[0012] Furthermore, high-pressure inert gas is filled between two sets of thrust ball bearings installed at the connection between the rotating shaft and the sleeve.

[0013] Furthermore, a sealing gasket is installed at the front end of the threaded connection between the adapter and the rotating shaft, and the inner diameter of the rotating shaft is the same as the inner diameter of the straight part of the adapter.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Through the internal shaft and adapter structure of the high-pressure nozzle assembly, as well as the spiral arrangement channel and conical nozzle on the nozzle cap, seawater can be sprayed into the flue gas in a more uniform and efficient manner, thereby improving the desulfurization efficiency; at the same time, this design helps to reduce the accumulation and retention of seawater during the spraying process, thereby reducing the risk of scaling; The desulfurization tower shell, upper cone and lower cone are welded with nickel-based alloy N08031 as the material for the flue gas input pipe and shrimp elbow, and duplex stainless steel S32750. The selection of these materials significantly improves the corrosion resistance and high temperature resistance of the entire device, and extends the service life of the equipment; the design of thrust ball bearings and permanent magnet rings, as well as the sealing measures at the connection between the shaft and the sleeve, reduce component wear and failure caused by friction and leakage, and reduce the maintenance cost of the equipment; When the fluid passes through the nozzle, according to the momentum theorem, the jet generates a reverse impact force on the nozzle. Since the nozzle is eccentrically installed on the nozzle axis, the nozzle generates torque under the action of the eccentric reverse impact force. Under the action of the torque, the nozzle shaft overcomes the friction torque and rotates, thereby reducing scaling; the detachable filter plate installed on the flue gas input pipe effectively prevents large particles in the flue gas from entering the interior of the spray device, reducing the problem of unstable operation caused by blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a desulfurization tower of the present invention; Figure 2 It is a schematic diagram of a high-pressure nozzle assembly of the present invention; Figure 3 It is a schematic diagram of the adapter of the present invention; Figure 4 It is a schematic diagram of the nozzle installation of the present invention.

[0016] In the figure: 1. desulfurization tower shell; 2. high-pressure nozzle assembly; 21. upper interface; 22. casing; 23. rotating shaft; 24. adapter; 241. nozzle cap screw interface; 242. sealing pad compartment; 243. pressurized chamber; 244. rotating shaft interface; 25. nozzle cap; 251. swirl chamber; 26. nozzle; 27. thrust ball bearing; 3. seawater inlet pipe; 4. observation port; 5. upper cone; 6. flue gas outlet; 7. flue gas inlet; 8. flue gas input pipeline; 9. shrimp bend; 10. seawater outlet; 11. lower cone. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] See also Figure 1-4The present invention provides a technical solution: an anti-scaling desulfurization spray device, comprising a desulfurization tower shell 1, a high-pressure nozzle assembly 2 and a seawater input pipe 3, a lower cone 11 is arranged at the bottom of the desulfurization tower shell 1, and a seawater outlet 10 is arranged at the center of the lower cone 11, three groups of observation ports 4 are evenly arranged on the side of the desulfurization tower shell 1, and two groups of seawater input pipes 3 are installed on the desulfurization tower shell 1 between the upper two groups of observation ports 4, and multiple groups of high-pressure nozzle assemblies 2 are evenly installed on the seawater input pipe 3, the desulfurization tower shell 1 An upper cone 5 is provided on the top, and a flue gas outlet 6 is provided in the middle of the upper cone 5. The side of the desulfurization tower shell 1 is connected to the flue gas input pipe 8 through a shrimp elbow 9, and a flue gas inlet 7 is provided at the upper end of the flue gas input pipe 8. The high-pressure nozzle assembly 2 includes an upper interface 21 at the bottom, a sleeve 22 screwed on the upper interface 21, a rotating shaft 23 installed inside the sleeve 22, and an adapter 24 screwed on the front end of the rotating shaft 23, a nozzle cap 25 installed on the upper end of the adapter 24, and three groups of nozzles 26 are installed on the upper end of the nozzle cap 25.

[0019] A shaft interface 244 connected to the shaft 23 is provided at the rear end of the adapter 24, and a nozzle cap screw interface 241 for screwing the nozzle cap 25 is provided on the outer side of the middle part of the adapter 24, and two sets of sealing pad chambers 242 are opened on the adapter 24 at the front end of the nozzle cap screw interface 241, and a pressurized chamber 243 with a truncated cone structure is provided at the front end of the adapter 24.

[0020] The shaft interface 244 provided at the rear end of the adapter 24 is used to accurately dock and connect the shaft 23. This design not only ensures the stability of the shaft 23 during high-speed rotation, but also facilitates installation and disassembly, and facilitates subsequent maintenance and repair work.

[0021] The nozzle cap screw interface 241 located outside the middle of the adapter 24 is a key part for screwing the nozzle cap 25. Through this interface, the nozzle cap 25 can be firmly installed on the adapter 24, thereby forming a sealed and stable spray unit.

[0022] At the front end of the nozzle cap screw interface 241, two sets of sealing gasket chambers 242 are specially provided on the adapter 24. These sealing gasket chambers are used to place sealing gaskets to enhance the sealing between the nozzle cap 25 and the adapter 24. The presence of the sealing gasket effectively prevents leakage of the high-pressure water flow during the spraying process, ensuring the maximum spraying effect.

[0023] The truncated cone structure pressurizing chamber 243 disposed at the front end of the adapter 24 is a key part for increasing the pressure of the high-pressure water flow before entering the nozzle cap 25. Through the truncated cone structure design of the pressurizing chamber 243, the water flow can be effectively pressurized when passing through, thereby enhancing the spraying effect of the nozzle 26. This design makes the sprayed water mist more dense and uniform, which helps to improve the desulfurization efficiency and reduce scaling.

[0024] A swirl chamber 251 is arranged inside the nozzle cap 25, and the swirl chamber 251 is connected to the pressurized chamber 243 arranged inside the adapter 24, and three groups of spirally arranged channels are arranged on the nozzle cap 25, and the three groups of channels are respectively connected to the nozzle 26; the nozzle 26 adopts a conical nozzle, the length of the straight section of the nozzle is between 1-3 times the nozzle diameter, and the nozzle convergence angle range is between 10-40°.

[0025] The nozzle cap 25 is designed with a swirl chamber 251 inside. This special structure allows the high-pressure water flow from the pressure chamber 243 inside the adapter 24 to enter smoothly and form a rotating water flow in the swirl chamber 251. This rotating water flow not only enhances the spraying force of the water flow, but also improves the uniformity and diffusion range of water atomization.

[0026] These high-pressure rotating water flows are further accelerated and dispersed through three sets of spiral channels carefully arranged on the nozzle cap 25, and finally sprayed out from three sets of conical nozzles 26. The design of the conical nozzle 26 is also exquisite, and the length of its straight section is strictly controlled between 1 and 3 times the nozzle diameter to ensure that the water flow is fully accelerated in the nozzle while maintaining a stable spraying shape. The convergence angle of the nozzle ranges from 10 to 40°. This design not only ensures the fineness of the sprayed water mist, but also takes into account the spraying distance and coverage, so that the desulfurization spraying effect is optimal.

[0027] The flue gas input pipe 8 and the shrimp elbow 9 are made of nickel-based alloy N08031, and the desulfurization tower shell 1, the upper cone 5 and the lower cone 11 are welded with duplex stainless steel S32750.

[0028] Two sets of thrust ball bearings 27 are installed at the connection between the rotating shaft 23 and the sleeve 22, and two sets of repelling permanent magnet rings are installed on the sleeve 22 and the rotating shaft 23 between the two sets of thrust ball bearings 27. At the same time, a sealing ring is arranged at the connection between the rotating shaft 23 and the upper interface 21 outside the thrust ball bearing 27, and a sealing ring is arranged at the connection between the rotating shaft 23 and the sleeve 22.

[0029] To ensure smooth rotation and long-term stability of the shaft, two sets of thrust ball bearings 27 are specially installed at the connection between the two components. The thrust ball bearings can not only withstand large axial loads, but also effectively reduce friction and wear during rotation, thereby improving overall performance and service life.

[0030] Two sets of repelling permanent magnet rings are installed. This non-contact magnetic assisted positioning method can not only effectively prevent axial movement of the shaft during high-speed rotation, but also further reduce mechanical wear and energy loss, ensuring the stability and reliability of the high-pressure nozzle assembly.

[0031] In order to prevent medium leakage and protect the internal mechanical structure, the designer also installed high-quality sealing rings at the connection between the rotating shaft 23 and the upper interface 21 on the outside of the thrust ball bearing 27, as well as at the direct connection between the rotating shaft 23 and the sleeve 22. These sealing rings are made of corrosion-resistant and wear-resistant materials, which can effectively isolate the medium from erosion of the internal mechanical structure and ensure the sealing and durability of the high-pressure nozzle assembly.

[0032] Two sets of detachable filter screens are installed inside the upper end of the smoke input pipe 8, and the smoke input pipe 8 is fixed by a bracket, and the shrimp elbow 9 at the bottom is fixed by a stand.

[0033] The space between two sets of thrust ball bearings 27 installed at the connection between the rotating shaft 23 and the sleeve 22 is filled with high-pressure inert gas.

[0034] The space between the two sets of thrust ball bearings 27 is filled with high-pressure inert gas; the filling of high-pressure inert gas can effectively isolate the invasion of external impurities and moisture, thereby enhancing the sealing performance of the connection between the rotating shaft 23 and the sleeve 22, and reducing the maintenance requirements caused by leakage.

[0035] The inert gas has low viscosity and chemical stability, and filling between the thrust ball bearings 27 can reduce the heat and wear generated by friction, thereby extending the service life of the bearings and the rotating shaft.

[0036] By filling the high-pressure inert gas, the stability of the rotating shaft 23 during high-speed rotation can be maintained, the adverse effects caused by vibration or eccentricity can be reduced, and the long-term and efficient operation of the spray device can be ensured.

[0037] The inert gas is non-corrosive to metals and can protect the internal structures of the rotating shaft 23 and the sleeve 22 from corrosion. This design is particularly important in harsh working environments.

[0038] A sealing gasket is installed at the front end of the threaded connection between the adapter 24 and the rotating shaft 23 , and the inner diameter of the inner cavity of the rotating shaft 23 is the same as the inner diameter of the straight portion of the adapter 24 .

[0039] The flue gas containing sulfur dioxide is introduced into the flue gas input pipe 8 through the flue gas inlet 7, and the flue gas passes through a detachable filter screen in the pipe for preliminary filtration to remove large particles therein; The filtered flue gas enters the desulfurization tower shell 1, is guided by the shrimp elbow 9, and is fully in contact with the seawater sprayed from the high-pressure nozzle assembly 2 inside the desulfurization tower to carry out a desulfurization reaction; the high-pressure nozzle assembly 2 supplies seawater through the seawater input pipe 3. When the fluid passes through the nozzle, according to the momentum theorem, the jet produces a reverse impact force on the nozzle. Since the nozzle is eccentrically installed on the nozzle axis, the nozzle produces torque under the action of the eccentric reverse impact force. Under the action of the torque, the nozzle shaft overcomes the friction torque and rotates. In order to reduce scaling, the nozzle cap 25 and the nozzle 26 rotate to produce a rotating spray effect, so that the seawater is evenly dispersed and fully mixed with the flue gas, thereby improving the desulfurization efficiency; The swirl chamber 251 in the rotating nozzle cap 25 is connected to the pressurized chamber 243 of the adapter 24, forming a pressure difference, which prompts the seawater to be sprayed out through the spirally arranged channel, further increasing the spraying effect; the flue gas after the desulfurization reaction is discharged through the flue gas outlet 6 set in the middle of the upper cone 5, and the seawater containing the desulfurization product is discharged through the seawater outlet 10 at the center of the lower cone 11 for subsequent treatment; During operation, the internal conditions of the desulfurization tower can be observed through the observation port 4 so as to adjust the operating parameters or perform maintenance in time; the combined design of the thrust ball bearing 27 and the permanent magnet ring between the rotating shaft 23 and the sleeve 22 reduces friction and wear, and improves the operating stability and service life of the device; the efficient operation of the device is maintained by regularly replacing the filter screen in the flue gas input pipe 8 and cleaning the scale in the desulfurization tower.

[0040] 1. The equipment assembly steps are as follows: Step 1: Installation of desulfurization tower shell First, place the desulfurization tower shell 1 at a predetermined position to ensure stability.

[0041] The lower cone 11 is installed at the bottom of the desulfurization tower shell 1 and ensured to be firmly fixed.

[0042] A seawater outlet 10 is installed at the center of the lower cone 11 to facilitate the subsequent discharge of seawater.

[0043] Step 2: Installation of observation port and seawater inlet pipe Three groups of observation ports 4 are evenly arranged on the side of the desulfurization tower shell 1 to facilitate observation of the situation inside the tower.

[0044] Two groups of seawater inlet pipes 3 are installed on the desulfurization tower shell 1 between the two groups of observation ports 4 at the top, and their positions are ensured to be uniform so that the seawater can be sprayed evenly.

[0045] Step 3: Installation of high pressure nozzle assembly A plurality of groups of high-pressure nozzle assemblies 2 are evenly installed on the seawater input pipe 3 .

[0046] Each high-pressure nozzle assembly 2 starts from an upper interface 21 at the bottom and is connected to a sleeve 22 by threading.

[0047] The rotating shaft 23 is installed inside the sleeve 22 , and the adapter 24 is screwed on the front end of the rotating shaft 23 .

[0048] A nozzle cap 25 is installed on the upper end of the adapter 24 , and three groups of nozzles 26 are installed on the upper end of the nozzle cap 25 .

[0049] Step 4: Connection of the smoke inlet pipe and the shrimp elbow The side of the desulfurization tower shell 1 is connected to the flue gas input pipeline 8 through a shrimp elbow 9.

[0050] A flue gas inlet 7 is arranged at the upper end of the flue gas input pipe 8 to ensure that the flue gas can smoothly enter the desulfurization tower.

[0051] Step 5: Installation and adjustment of other components As required, two sets of detachable filter screens are installed inside the upper end of the flue gas input pipe 8 to prevent impurities from entering the desulfurization tower.

[0052] Make sure all connections are fitted with appropriate seals and gaskets to prevent leakage.

[0053] Two sets of thrust ball bearings 27 are installed at the connection between the rotating shaft 23 and the sleeve 22, and are filled with high-pressure inert gas to improve sealing and durability.

[0054] 2. Equipment Operation Start-up phase The seawater input system is turned on to allow seawater to enter the high-pressure nozzle assembly 2 through the seawater input pipe 3 .

[0055] At the same time, the flue gas input system is started to allow the flue gas containing sulfur dioxide to enter the desulfurization tower shell 1 through the flue gas input pipeline 8 and the shrimp elbow 9.

[0056] The swirl chamber 251 inside the nozzle cap 25 in the high-pressure nozzle assembly 2 is connected to the pressurized chamber 243 inside the adapter 24 to form a high-pressure water flow.

[0057] The high-pressure water flow enters the nozzle 26 through three sets of spirally arranged channels and is sprayed out in the form of a conical nozzle, covering the entire internal space of the desulfurization tower.

[0058] The conical nozzle makes the straight section length of the nozzle between 1 and 3 times the nozzle diameter, and the nozzle convergence angle ranges from 10 to 40 degrees, which effectively improves the desulfurization efficiency and reduces the risk of scaling.

[0059] The operation conditions in the desulfurization tower, such as the spraying effect and the flue gas flow state, can be observed through the observation port 4.

[0060] Adjust the seawater flow and flue gas input according to actual conditions to achieve the best desulfurization effect; regularly check the connection of each component and replace damaged sealing rings and gaskets in time; clean the filter screen in the flue gas input pipe 8 to prevent blockage; regularly check the wear of the high-pressure nozzle assembly 2 and replace it when necessary.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-scaling desulfurization spray device, Features: The desulfurization tower shell (1) comprises a desulfurization tower shell (1), a high-pressure nozzle assembly (2) and a seawater inlet pipe (3), wherein a lower cone (11) is arranged at the bottom of the desulfurization tower shell (1), and a seawater outlet (10) is arranged at the center of the lower cone (11), three groups of observation ports (4) are evenly arranged on the side of the desulfurization tower shell (1), and two groups of seawater inlet pipes (3) are installed on the desulfurization tower shell (1) between the upper two groups of observation ports (4), and multiple groups of high-pressure nozzle assemblies (2) are evenly installed on the seawater inlet pipes (3), and an upper cone (5) is arranged on the top of the desulfurization tower shell (1), and the upper cone (5) is provided with a plurality of high-pressure nozzle assemblies (2) on the seawater inlet pipes (3). A flue gas outlet (6) is arranged in the middle of the body (5); a flue gas input pipe (8) is connected to the side of the desulfurization tower shell (1) via a shrimp elbow (9); and a flue gas inlet (7) is arranged at the upper end of the flue gas input pipe (8); the high-pressure nozzle assembly (2) comprises an upper interface (21) at the bottom, a sleeve (22) screwed on the upper interface (21), a rotating shaft (23) installed inside the sleeve (22), and an adapter (24) screwed on the front end of the rotating shaft (23); a nozzle cap (25) installed on the upper end of the adapter (24); and three groups of nozzles (26) are installed on the upper end of the nozzle cap (25).

2. An anti-scaling desulfurization spray device according to claim 1, Features: The adapter (24) is provided with a rotating shaft interface (244) connected to the rotating shaft (23) at the rear end thereof, and a nozzle cap screw interface (241) for screwing the nozzle cap (25) is provided at the outer middle part thereof, and two sets of sealing pad chambers (242) are provided on the adapter (24) at the front end of the nozzle cap screw interface (241), and a truncated cone-shaped pressurized chamber (243) is provided at the front end thereof.

3. An anti-scaling desulfurization spray device according to claim 2, Features: A swirl chamber (251) is provided inside the nozzle cap (25), and the swirl chamber (251) is connected to a pressurized chamber (243) provided inside the adapter (24), and three groups of spirally arranged channels are provided on the nozzle cap (25), and the three groups of channels are respectively connected to the nozzle (26).

4. An anti-scaling desulfurization spray device according to claim 3, Features: The nozzle (26) is a conical nozzle, the length of the straight section of the nozzle is between 1 and 3 times the nozzle diameter, and the nozzle convergence angle ranges between 10 and 40 degrees.

5. An anti-scaling desulfurization spray device according to claim 4, Features: The flue gas input pipe (8) and the shrimp elbow (9) are made of nickel-based alloy N08031, and the desulfurization tower shell (1), the upper cone (5) and the lower cone (11) are welded with duplex stainless steel S32750.

6. An anti-scaling desulfurization spray device according to claim 5, Features: Two sets of thrust ball bearings (27) are installed at the connection between the rotating shaft (23) and the sleeve (22), and two sets of repelling permanent magnet rings are installed on the sleeve (22) and the rotating shaft (23) between the two sets of thrust ball bearings (27). At the same time, a sealing ring is provided at the connection between the rotating shaft (23) and the upper interface (21) outside the thrust ball bearing (27), and a sealing ring is provided at the connection between the rotating shaft (23) and the sleeve (22).

7. The anti-scaling desulfurization spray device according to claim 1, Features: Two sets of detachable filter screens are installed inside the upper end of the smoke input pipe (8), and the smoke input pipe (8) is fixed by a bracket, and the shrimp elbow (9) at the bottom is fixed by a stand.

8. The anti-scaling desulfurization spray device according to claim 5, Features: High-pressure inert gas is filled between two sets of thrust ball bearings (27) installed at the connection between the rotating shaft (23) and the sleeve (22).

9. The anti-scaling desulfurization spray device according to claim 1, Features: A sealing gasket is installed at the front end of the threaded connection between the adapter (24) and the rotating shaft (23), and the inner diameter of the rotating shaft (23) is the same as the inner diameter of the straight portion of the adapter (24).

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