A gas-liquid stirring system and apparatus for a precursor preparation reactor

Abstract

This invention discloses a gas-liquid stirring system for a precursor preparation reactor, comprising a stirring device, a bottom liquid pumping circuit, a solidification device, a nitrogen circulation system, and a gas-liquid mixing device. The stirring device includes a reactor and a stirring assembly, which is disposed within the reactor. The stirring assembly includes a fixed base and a stirring unit. The stirring unit includes two limiting members, a gas-liquid rotation component, a screw rod, a mounting plate, and two conveying pipes. The gas-liquid rotation component includes an inner core, a rotating body, and multiple nozzles. The rotating body has double annular grooves, and the bottom of the double annular grooves has a placement groove. The side wall of the placement groove has gas-liquid channels, and the outer side of the gas-liquid channels is connected to a circular chamber. The inner core is rotatably disposed in the placement groove and has two gas-liquid inlets. The bottom liquid pumping circuit, the solidification device, and the nitrogen circulation system are connected to the reactor. This invention also discloses a gas-liquid stirring device for a precursor preparation reactor. Compared with the prior art, this invention can achieve non-magnetic, rapid, and uniform stirring.

Description

Technical Field

[0001] This invention relates to the field of precursor preparation technology, and in particular to a gas-liquid stirring system and apparatus for a precursor preparation reactor. Background Technology

[0002] In the preparation of ternary material precursors, during the co-precipitation reaction, the mixed solution and slurry need to be stirred in the reactor to ensure uniform reaction and crystallization of the ternary precursor. The quality of the reaction directly affects the next process, and the stirring process in the reactor directly affects the quality of the slurry.

[0003] Currently, mechanical stirring is commonly used in reactors. However, mechanical stirring has drawbacks such as high power consumption, low production capacity due to the limited rotation radius of the stirring blades, and uneven heating of the reactor. Furthermore, the stirrer is susceptible to wear and corrosion, which can introduce magnetic substances into the slurry.

[0004] In view of this, the inventors of this application, through in-depth research, have obtained a gas-liquid stirring system and apparatus for a precursor preparation reactor. Summary of the Invention

[0005] The purpose of this invention is to provide a gas-liquid stirring system and apparatus for a precursor preparation reactor, which can achieve non-magnetic, rapid, and uniform stirring.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A precursor preparation reactor gas-liquid stirring system includes a stirring device, a bottom liquid pumping circuit, a solidification device, a nitrogen circulation system, and a gas-liquid mixing device. The stirring device includes a reactor and a stirring assembly. The stirring assembly is disposed in the reactor and includes a fixed base and a stirring unit. The stirring unit includes two limiting members, a gas-liquid rotation component, a screw rod, a mounting plate, and two conveying pipes. The mounting plate is disposed on the fixed base, and the screw rod is vertically disposed on the mounting plate. The two limiting members are respectively disposed at the upper and lower ends of the screw rod. The gas-liquid rotation component includes an inner core, a rotating body, and multiple nozzles. The inner core and the rotating body are cylindrical. A double-annular groove that mates with the screw rod is provided at the center of the upper surface of the rotating body. The bottom of the double-annular groove is provided with a flow path from the lower surface of the rotating body towards... An upwardly extending placement groove is provided with gas-liquid channels on its sidewalls. A circular chamber is connected to the outer side of the gas-liquid channels, and multiple gas-liquid outlets are provided on the outer side of the circular chamber. Each of the multiple gas-liquid outlets is connected to a multiple of the nozzles. An inner core is rotatably disposed in the placement groove and is passed through by the spiral rod. The inner core has two gas-liquid inlets, one end of which is connected to the two conveying pipes, and the other end is connected to the gas-liquid channels. The bottom liquid pumping circuit, the solidification device, and the nitrogen circulation system are connected to the reactor. A hollow channel is provided inside the nozzle, and the outlet of the hollow channel is eccentrically positioned. An inclined nozzle limiting rod is provided on the nozzle, and a limiting member limiting rod for moving the nozzle limiting rod is provided on the limiting member, and the limiting member limiting member is provided in a one-to-one correspondence with the nozzle limiting rod.

[0008] In a preferred embodiment, the bottom liquid pumping circuit includes multiple valves and a magnetic pump; the nitrogen circulation system includes a nitrogen tank, a nitrogen delivery device, a fan, an air filter, a refrigerated dryer, and a heater; the nitrogen tank is equipped with a check valve, a make-up valve, an exhaust valve, and a safety valve; a gas-liquid mixing device is provided at the confluence of the bottom liquid pumping circuit and the nitrogen circulation system.

[0009] A gas-liquid stirring device for a precursor preparation reactor includes a reactor and a stirring assembly. The stirring assembly is disposed in the reactor and includes a fixed base and a stirring unit. The stirring unit includes two limiting members, a gas-liquid rotation component, a screw rod, a mounting plate, and two conveying pipes. The mounting plate is disposed on the fixed base, and the screw rod is vertically disposed on the mounting plate. The two limiting members are respectively disposed at the upper and lower ends of the screw rod. The gas-liquid rotation component includes an inner core, a rotating body, and multiple nozzles. The inner core and the rotating body are cylindrical. The upper surface of the rotating body... The center position is provided with a double annular groove that cooperates with the spiral rod. The bottom of the double annular groove is provided with a placement groove extending upward from the lower surface of the rotating body. The side wall of the placement groove is provided with a gas-liquid channel. The outer side of the gas-liquid channel is connected to a circular chamber. The outer side of the circular chamber is provided with multiple gas-liquid outlets. The multiple gas-liquid outlets are connected one-to-one with the multiple nozzles. The inner core is rotatably disposed in the placement groove and is passed through by the spiral rod. The inner core is provided with two gas-liquid inlets. One end of the two gas-liquid inlets is connected to the two conveying pipes respectively, and the other end is connected to the gas-liquid channel.

[0010] In a preferred embodiment, the stirring unit is provided with multiple units.

[0011] In a preferred embodiment, the gas-liquid rotation assembly further includes a bearing, a baffle, and a screw. The inner core has an annular boss surrounding it on its peripheral wall. The baffle is mounted on the lower surface of the rotating body by the screw. The baffle abuts against the outer ring of the bearing, and the inner ring of the bearing is supported by the annular boss.

[0012] In a preferred embodiment, the gas-liquid outlet is connected to the nozzle via a threaded connection.

[0013] In a preferred embodiment, the nozzle has a hollow channel inside, and the outlet of the hollow channel is eccentrically positioned.

[0014] In a preferred embodiment, the nozzle is provided with an inclined nozzle limiting rod, and the limiting member is provided with a limiting member limiting rod for moving the nozzle limiting rod, and the limiting member limiting member and the nozzle limiting rod are provided in a one-to-one correspondence.

[0015] In a preferred embodiment, the outer periphery of the inner core is provided with an annular groove connecting the gas-liquid channel and the gas-liquid inlet, and sealing rings are provided above and below the annular groove.

[0016] In a preferred embodiment, the number of nozzles is set to six.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The entire mixing system has good mixing uniformity, short mixing time, no magnetic pollution, can achieve continuous operation, low power consumption, and greatly improves production efficiency.

[0019] 2. During operation, the nitrogen circulation system and gas-liquid stirring device achieve rapid and uniform stirring in all directions, so that the ternary precursor solid particles are uniformly suspended in the liquid phase, and the solution slurry in the reactor has a large circulation flow rate and flow velocity.

[0020] 3. The device has low power consumption, and the movement of the structural components relies solely on gas-liquid propulsion to achieve all-round stirring within the reactor.

[0021] 4. All parts of this device that come into contact with the liquid flow are made of non-metallic plastic and ceramic materials, eliminating the risk of magnetic contamination. Nitrogen circulation and heating enhance heat transfer within the reactor, ensuring temperature uniformity throughout the vessel. The stirring efficiency of the reactor can be improved by adjusting the gas-liquid transport speed. Attached Figure Description

[0022] Figure 1 This invention relates to a process diagram of a gas-liquid stirring system for a precursor preparation reactor.

[0023] Figure 2 This is a schematic diagram of the stirring assembly of a gas-liquid stirring device for a precursor preparation reactor, which relates to the present invention.

[0024] Figure 3 This is a schematic diagram of the stirring unit of a gas-liquid stirring device for a precursor preparation reactor, which relates to the present invention.

[0025] Figure 4 This is a partial cross-sectional view of the stirring unit of a gas-liquid stirring device for a precursor preparation reactor, which relates to the present invention.

[0026] Figure 5 This invention relates to a three-dimensional structure, i.e., a longitudinal cross-sectional view, of the nozzle of a gas-liquid stirring device for a precursor preparation reactor.

[0027] Figure 6 This is a schematic diagram of the structure of a limiting component of a gas-liquid stirring device for a precursor preparation reactor, which relates to the present invention.

[0028] In the picture

[0029] 1. Bottom liquid pumping circuit; 2. Stirring assembly; 3. Reactor; 4. Lifting device; 5. Nitrogen circulation system; 6. Gas-liquid mixing device; 7. Stirring unit; 8. Fixed base; 9. Limiting component; 10. Gas-liquid rotation assembly; 11. Screw; 12. Conveying pipe; 13. Inner core; 14. Screw; 15. Circular baffle; 16. Bearing; 17. Nozzle; 18. Rotating body; 19. Sealing ring; 20. Gas-liquid inlet; 21. Annular boss; 22. Annular groove; 23. Gas-liquid outlet; 24. Gas-liquid channel; 25. Circular chamber; 26. Nozzle limiting rod; 27. Limiting component limiting rod; 28. Mounting plate; 29. ​​Hollow channel. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0032] Example 1:

[0033] A precursor preparation reactor gas-liquid stirring system includes a stirring device, a bottom liquid pumping circuit, a solidification device, a nitrogen circulation system, and a gas-liquid mixing device. The stirring device includes a reactor and a stirring assembly. The stirring assembly is disposed in the reactor and includes a fixed base and a stirring unit. The stirring unit includes two limiting members, a gas-liquid rotation component, a screw rod, a mounting plate, and two conveying pipes. The mounting plate is disposed on the fixed base, and the screw rod is vertically disposed on the mounting plate. The two limiting members are respectively disposed at the upper and lower ends of the screw rod. The gas-liquid rotation component includes an inner core, a rotating body, and multiple nozzles. The inner core and the rotating body are cylindrical. A double-annular groove that mates with the screw rod is provided at the center of the upper surface of the rotating body. The bottom of the double-annular groove is provided with a flow path from the lower surface of the rotating body towards... An upwardly extending placement groove is provided with gas-liquid channels on its sidewalls. A circular chamber is connected to the outer side of the gas-liquid channels, and multiple gas-liquid outlets are provided on the outer side of the circular chamber. Each of the multiple gas-liquid outlets is connected to a multiple of the nozzles. An inner core is rotatably disposed in the placement groove and is passed through by the spiral rod. The inner core has two gas-liquid inlets, one end of which is connected to the two conveying pipes, and the other end is connected to the gas-liquid channels. The bottom liquid pumping circuit, the solidification device, and the nitrogen circulation system are connected to the reactor. A hollow channel is provided inside the nozzle, and the outlet of the hollow channel is eccentrically positioned. An inclined nozzle limiting rod is provided on the nozzle, and a limiting member limiting rod for moving the nozzle limiting rod is provided on the limiting member, and the limiting member limiting member is provided in a one-to-one correspondence with the nozzle limiting rod.

[0034] The bottom liquid pumping circuit includes corresponding valves and a magnetic pump.

[0035] The reactor is equipped with a temperature monitor and a pH monitor to monitor the temperature and pH inside the reactor. The pH value is adjusted to promote the co-precipitation reaction, and the temperature is adjusted by the heater of the nitrogen circulation system to achieve uniform heating inside the reactor.

[0036] The aforementioned consolidation device is specifically a thickener, which realizes the consolidation of slurry in the reactor.

[0037] The nitrogen circulation system includes a nitrogen tank, a nitrogen delivery device, a fan, an air filter, a refrigerated dryer, and a heater. It is used for delivering high-pressure nitrogen and enables nitrogen recycling. Nitrogen discharged from the top of the reactor is passed through a refrigerated dryer and an air filter before being returned to the nitrogen tank for the next cycle. The nitrogen tank is equipped with a check valve, a make-up valve, an exhaust valve, and a safety valve to ensure safe monitoring and recycling of the nitrogen. Furthermore, the nitrogen circulation system includes a heater, which heats the nitrogen before it is discharged from the reactor via a gas-liquid stirring device, ensuring uniform temperature control within the reactor.

[0038] The bottom liquid pumping circuit draws the bottom liquid from the reactor up and sends it together with high-pressure nitrogen into the gas-liquid stirring device for gas-liquid stirring, thereby achieving circulation homogenization control of the reactor.

[0039] A gas-liquid mixing device, specifically a Venturi jet, is provided at the confluence of the bottom liquid pumping circuit and the nitrogen circulation system. The gas phase is the main flow and the bottom liquid is the secondary flow. They are mixed in the jet and then the gas-liquid mixture is sent to the gas-liquid stirring device.

[0040] Compared with the prior art, this embodiment has the following beneficial effects:

[0041] 1. The entire mixing system has good mixing uniformity, short mixing time, no magnetic pollution, can achieve continuous operation, low power consumption, and greatly improves production efficiency.

[0042] 2. During operation, the nitrogen circulation system and gas-liquid stirring device achieve rapid and uniform stirring in all directions, so that the ternary precursor solid particles are uniformly suspended in the liquid phase, and the solution slurry in the reactor has a large circulation flow rate and flow velocity.

[0043] 3. The device has low power consumption, and the movement of the structural components relies solely on gas-liquid propulsion to achieve all-round stirring within the reactor.

[0044] 4. All parts of this device that come into contact with the liquid flow are made of non-metallic plastic and ceramic materials, eliminating the risk of magnetic contamination. Nitrogen circulation and heating enhance heat transfer within the reactor, ensuring temperature uniformity throughout the vessel. The stirring efficiency of the reactor can be improved by adjusting the gas-liquid transport speed.

[0045] Example 2:

[0046] A gas-liquid stirring device for a precursor preparation reactor includes a reactor and a stirring assembly. The stirring assembly is disposed in the reactor and includes a fixed base and a stirring unit. The stirring unit includes two limiting members, a gas-liquid rotation component, a screw rod, a mounting plate, and two conveying pipes. The mounting plate is disposed on the fixed base, and the screw rod is vertically disposed on the mounting plate. The two limiting members are respectively disposed at the upper and lower ends of the screw rod. The gas-liquid rotation component includes an inner core, a rotating body, and multiple nozzles. The inner core and the rotating body are cylindrical. The upper surface of the rotating body... The center position is provided with a double annular groove that cooperates with the spiral rod. The bottom of the double annular groove is provided with a placement groove extending upward from the lower surface of the rotating body. The side wall of the placement groove is provided with a gas-liquid channel. The outer side of the gas-liquid channel is connected to a circular chamber. The outer side of the circular chamber is provided with multiple gas-liquid outlets. The multiple gas-liquid outlets are connected one-to-one with the multiple nozzles. The inner core is rotatably disposed in the placement groove and is passed through by the spiral rod. The inner core is provided with two gas-liquid inlets. One end of the two gas-liquid inlets is connected to the two conveying pipes respectively, and the other end is connected to the gas-liquid channel.

[0047] The height of the stirring device is one-quarter of the height of the reactor.

[0048] To achieve thorough mixing, multiple mixing units are provided, specifically six in this embodiment.

[0049] Furthermore, the gas-liquid rotation assembly also includes a bearing, a baffle, and a screw. The inner core has an annular boss surrounding it on its peripheral wall. The baffle is installed on the lower surface of the rotating body using the screw. The baffle abuts against the outer ring of the bearing, and the inner ring of the bearing is supported by the annular boss, thereby realizing the rotational connection between the inner core and the rotating body.

[0050] Furthermore, the gas-liquid outlet is connected to the nozzle via a threaded connection.

[0051] Furthermore, in order to enable the nozzle to rotate, a hollow channel is provided inside the nozzle, and the outlet of the hollow channel is eccentrically positioned.

[0052] To achieve tilt adjustment of the nozzle's spray direction, the nozzle is provided with an inclined nozzle limiting rod. The limiting member is provided with a limiting member limiting rod for moving the nozzle limiting rod. The limiting member and the nozzle limiting rod are arranged in a one-to-one correspondence. When the nozzle limiting rod contacts the limiting member limiting rod, the nozzle limiting rod rotates due to the action of the limiting member limiting rod, thereby causing the nozzle to rotate and switching the nozzle's spray direction.

[0053] Furthermore, the outer periphery of the inner core is provided with an annular groove that connects the gas-liquid channel and the gas-liquid inlet, and sealing rings are provided above and below the annular groove.

[0054] Specifically, the number of nozzles is set to six.

[0055] All components in this device that come into contact with the liquid are made of plastic and ceramic, eliminating magnetic contamination. The entire device achieves gas-liquid mixing, enabling rapid dispersion of the salt, alkali, and ammonia solutions within the reactor and ensuring a high circulation flow rate and velocity of the slurry, allowing the ternary precursor solid particles to be uniformly suspended in the liquid phase. Furthermore, the heater in the nitrogen circulation system enhances heat transfer within the reactor, ensuring temperature uniformity throughout the reactor.

[0056] To more clearly explain the structure and working principle of Embodiment 1 and Embodiment 2, the following description is provided in conjunction with the accompanying drawings:

[0057] like Figures 1 to 5 As shown, a precursor preparation reactor gas-liquid stirring system includes a bottom liquid pumping circuit 1, a stirring device, a solidification device 4, a nitrogen circulation system 5, and a gas-liquid mixing device 6. The stirring device includes a stirring assembly 2 and a reactor 3.

[0058] The stirring assembly 2 includes a stirring unit 7 and a fixed base 8; the stirring unit 7 includes a limiting member 9, a gas-liquid rotation assembly 10 and a spiral rod 11; the gas-liquid rotation assembly 10 includes a conveying pipe 12, an inner core 13, a screw 14, a circular baffle 15, a bearing 16, a nozzle 17, a rotating body 18, a sealing ring 19, a gas-liquid inlet 20, an annular boss 21, an annular groove 22, a gas-liquid outlet 23, a gas-liquid channel 24, a circular chamber 25 and a nozzle limiting rod 26.

[0059] The fixed base 8 of the stirring assembly 2 is installed in the center of the bottom of the reactor 3. The stirring units 7 are evenly distributed around and in the center of the fixed base 8 and are connected by bolts. One or more stirring units 7 can be set as needed.

[0060] The spiral rod 11 has rounded heads at the top and bottom, with threads arranged on the rounded heads, and the bottom of the spiral rod 11 is a mounting plate 28.

[0061] The two limiting members 9 are symmetrically arranged at the top and bottom of the screw rod 11 by being threaded on. Six limiting members 27 are arranged around the circumference of the limiting members 9. The gas-liquid rotation assembly 10 is arranged on the screw rod 11, and the bottom end of the screw rod 11 has a mounting plate 28 for connecting with the fixed base 8.

[0062] The inner core 13 is a cylinder with a hollow center and a protruding circular hole at the bottom, which serves as a gas-liquid inlet 20. The end hole of the gas-liquid inlet 20 is connected to the annular groove 22.

[0063] The rotating body 18 has a double annular groove at its center, which is used to limit the movement of the screw rod 11, so that the rotating body 18 moves up and down with the screw rod 11. Two circular gas-liquid channels 24 are symmetrically arranged on the inner circumference of the rotating body 18. The ends of the gas-liquid channels 24 are connected to the circular chamber 25. Six gas-liquid outlets 23 are evenly distributed on the outer circumference of the circular chamber 25.

[0064] The nozzle 17 is a cylindrical boss shape, with a nozzle limiting rod 26 at the front end and a hollow channel 29 inside. The outlet of the hollow channel 29 is eccentrically set, and the outlet direction can be adjusted by rotating the nozzle.

[0065] like Figure 4 As shown, the inner core 13, the rotating body 18, and the nozzles 17 constitute the gas-liquid rotation assembly 10. The inner core 13 is rotatably connected to the internal groove of the rotating body 18. The annular groove 22 of the inner core 13 is sealed with a sealing ring 19. The circular baffle 15 is fastened to the rotating body 18 by screws 14. The inner ring of the circular baffle 15 abuts against the outer ring of the bearing 16. The inner ring of the bearing 16 is supported by the annular protrusion 21 on the edge of the inner core 13, thereby realizing the rotatable connection between the inner core 13 and the rotating body 18. The six nozzles 17 are respectively connected to the six gas-liquid outlets 23 of the rotating body 18 by threads.

[0066] The conveying pipe 12 is a flexible hose, with its upper end connected to the gas-liquid rotation component 10 and its lower end connected to the combined pipeline of the nitrogen circulation system 5 and the bottom liquid pumping circuit 1. The lower end of the flexible hose passes through the round hole of the lower limiting component 9, so that the conveying pipe 12 can move up and down without shifting.

[0067] Its working process is as follows:

[0068] like Figure 1 As shown, the nitrogen circulation system 5 heats the high-pressure nitrogen and combines it with the bottom liquid delivered by the bottom liquid pumping circuit 1, and sends it into the stirring assembly 2.

[0069] Specifically, such as Figure 4 As shown, the gas-liquid mixture enters the gas-liquid inlet 20 of the inner core 13 through the conveying pipe 12, passes through the gas-liquid inlet 20 into the annular groove 22, then passes through the gas-liquid channel 24 of the rotating body 18 into the circular chamber 25, and finally passes through the gas-liquid outlet 23 into the nozzle 17 and is sprayed into the reactor 3.

[0070] Specifically, the gas-liquid rotation component 10 is initially positioned at the bottom of the screw rod 11, and the nozzle 17 initially sprays out in a clockwise annular motion.

[0071] Specifically, the nozzle 17 sprays out gas and liquid, and the reaction force causes the rotating body 18 to start rotating. The annular boss 21 of the inner core 13 abuts against the inner ring of the bearing 16. At the same time, the conveying pipe 12 and the gas and liquid inlet 20 of the inner core 13 have a certain force, so that the rotating body 18 rotates while the inner core 13 remains stationary, thus preventing the conveying pipe 12 from getting tangled or knotted.

[0072] Specifically, while the rotating body 18 rotates, it is also spiraled upward clockwise by the limiting action of the screw rod 11. The circular baffle 15 supports the annular boss 21 of the inner core by abutting against the bearing 16, thereby lifting the inner core 13 and the conveying pipe 12 together. At this time, the annular groove 22 continues to supply gas and liquid. While the rotating body 18 rotates, the gas-liquid mixture is sent from the annular groove 22 into the two gas-liquid channels 24 on the inner circumference side of the rotating body 18, ensuring that the inner core 13 does not rotate with the rotating body 18 while the gas-liquid mixture can be continuously conveyed.

[0073] Specifically, when the gas-liquid rotating assembly 10 rotates and rises to the top of the screw rod 11, the nozzle limiting rod 26 and the limiting member limiting rod 27 rotate and collide, causing the entire nozzle 17 to rotate 180 degrees, realizing reverse spraying of the nozzle 17. This causes the gas-liquid rotating assembly 10 to rotate counterclockwise in the opposite direction. Then, through the reaction force and the limiting of the screw rod 11, it rotates and descends. When it descends to the bottom, it is adjusted to the opposite direction by the bottom limiting member limiting rod 27. This process is repeated to achieve all-round gas-liquid stirring of the reactor 3.

[0074] In the above process, the temperature and pH of the reactor 3 are monitored in real time. The pH value is controlled by ammonia water. The nitrogen gas is heated by adjusting the heater of the nitrogen circulation system 5 and introduced into the stirring component 2 to achieve uniform temperature control inside the reactor 3.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Unless otherwise specified, an element defined by the phrase "comprising..." or "including..." does not exclude the presence of additional elements in the process, method, article, or terminal device that includes said element. Additionally, in this document, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number.

[0076] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be easily made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A gas-liquid stirring system for a precursor preparation reactor, characterized in that, The system includes a stirring device, a bottom liquid pumping circuit, a solidification device, a nitrogen circulation system, and a gas-liquid mixing device. The stirring device comprises a reaction vessel and a stirring assembly, which is located within the reaction vessel. The stirring assembly includes a fixed base and a stirring unit. The stirring unit includes two limiting members, a gas-liquid rotation component, a screw rod, a mounting plate, and two conveying pipes. The mounting plate is mounted on the fixed base, and the screw rod is vertically mounted on the mounting plate. The two limiting members are respectively located at the upper and lower ends of the screw rod. The gas-liquid rotation component includes an inner core, a rotating body, and multiple nozzles. The inner core and the rotating body are cylindrical. A double-annular groove, cooperating with the screw rod, is located at the center of the upper surface of the rotating body. A mounting groove extending upwards from the lower surface of the rotating body is located at the bottom of the double-annular groove. The side wall of the placement tank is provided with gas-liquid channels. A circular chamber is connected to the outside of the gas-liquid channels. Multiple gas-liquid outlets are provided on the outside of the circular chamber. Each of the multiple gas-liquid outlets is connected to a multiple of the nozzles. The inner core is rotatably disposed in the placement tank and is passed through by the spiral rod. The inner core is provided with two gas-liquid inlets. One end of each of the two gas-liquid inlets is connected to the two conveying pipes, and the other end is connected to the gas-liquid channels. The bottom liquid pumping circuit, the solidification device, and the nitrogen circulation system are connected to the reactor. The nozzle is provided with a hollow channel inside. The outlet of the hollow channel is eccentrically disposed. The nozzle is provided with an inclined nozzle limiting rod. The limiting member is provided with a limiting member limiting rod for moving the nozzle limiting rod. The limiting member limiting member is provided with a nozzle limiting rod corresponding to the nozzle limiting rod.

2. The gas-liquid stirring system for a precursor preparation reactor according to claim 1, characterized in that, The bottom liquid pumping circuit includes multiple valves and a magnetic pump; the nitrogen circulation system includes a nitrogen tank, a nitrogen delivery device, a fan, an air filter, a refrigerated dryer, and a heater. The nitrogen tank is equipped with a check valve, a make-up valve, an exhaust valve, and a safety valve; a gas-liquid mixing device is provided at the confluence of the bottom liquid pumping circuit and the nitrogen circulation system.

3. A gas-liquid stirring device for a precursor preparation reactor, characterized in that, The system includes a reaction vessel and a stirring assembly. The stirring assembly is disposed within the reaction vessel and includes a fixed base and a stirring unit. The stirring unit includes two limiting members, a gas-liquid rotation component, a screw rod, a mounting plate, and two conveying pipes. The mounting plate is disposed on the fixed base, and the screw rod is vertically mounted on the mounting plate. The two limiting members are respectively disposed at the upper and lower ends of the screw rod. The gas-liquid rotation component includes an inner core, a rotating body, and multiple nozzles. The inner core and the rotating body are cylindrical. A double-annular groove that mates with the screw rod is provided at the center of the upper surface of the rotating body. A mounting groove extending upward from the lower surface of the rotating body is provided at the bottom of the double-annular groove. The side wall of the placement groove is provided with gas-liquid channels. A circular chamber is connected to the outside of the gas-liquid channels. Multiple gas-liquid outlets are provided on the outside of the circular chamber. Each of the multiple gas-liquid outlets is connected to a multiple of the nozzles. The inner core is rotatably disposed in the placement groove and is passed through by the spiral rod. The inner core is provided with two gas-liquid inlets. One end of each of the two gas-liquid inlets is connected to the two conveying pipes, and the other end is connected to the gas-liquid channels. The nozzle is provided with a hollow channel inside. The outlet of the hollow channel is eccentrically disposed. The nozzle is provided with an inclined nozzle limiting rod. The limiting member is provided with a limiting member limiting rod for moving the nozzle limiting rod. The limiting member and the nozzle limiting rod are provided in a one-to-one correspondence.

4. The gas-liquid stirring device for a precursor preparation reactor according to claim 3, characterized in that, The stirring unit is provided in multiple ways.

5. The gas-liquid stirring device for a precursor preparation reactor according to claim 3, characterized in that, The gas-liquid rotation assembly also includes a bearing, a baffle, and screws. The inner core has an annular boss surrounding it on its peripheral wall. The baffle is installed on the lower surface of the rotating body by the screws. The baffle abuts against the outer ring of the bearing, and the inner ring of the bearing is supported by the annular boss.

6. The gas-liquid stirring device for a precursor preparation reactor according to claim 3, characterized in that, The gas-liquid outlet is connected to the nozzle via a thread.

7. The gas-liquid stirring device for a precursor preparation reactor according to claim 3, characterized in that, The outer periphery of the inner core is provided with an annular groove that connects the gas-liquid channel and the gas-liquid inlet, and sealing rings are provided above and below the annular groove.

8. The gas-liquid stirring device for a precursor preparation reactor according to claim 3, characterized in that, The number of nozzles is set to six.

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