A ternary precursor reaction device for controlling the reaction atmosphere

Abstract

This utility model relates to the field of ternary precursor synthesis reaction technology, and more particularly to a ternary precursor reaction device for controlling the reaction atmosphere, including a reactor and a cover plate. A cover plate for sealing the reactor body is fastened to the upper end of the reactor. Two sets of connecting pipes are connected to the upper end of the cover plate. Filter rings are provided on the inner sides of both sets of connecting pipes, and the filter rings are fastened to the connecting pipes. A positioning pipe is installed at the lower end of the reactor, and a discharge pipe is connected to the outer wall of the positioning pipe. A discharge plate is installed at the end of the discharge pipe furthest from the positioning pipe. This utility model achieves the filtration of materials with different particle sizes by installing detachable filter rings at the connecting pipe joints, allowing selection of filter rings with different pore sizes according to different production requirements. During the feeding process, the filter rings filter the material entering the reactor in real time, effectively intercepting solid particulate impurities, preventing impurities from entering the reactor, reducing the impact of impurities on product performance, and improving the quality of the final product.

Description

Technical Field

[0001] This utility model relates to the field of ternary precursor synthesis reaction technology, and in particular to a ternary precursor reaction device for controlling the reaction atmosphere. Background Technology

[0002] Ternary precursors (nickel-cobalt-manganese hydroxide) are key materials for lithium-ion battery cathodes. The control of the reaction atmosphere during their synthesis directly affects the key performance indicators of the cathode, such as crystal structure, microstructure, compaction density, and specific surface area, which in turn have a crucial impact on energy density, rate performance, and cycle life. The ternary precursor reactor is used to produce key materials for lithium-ion batteries. It achieves uniform mixing and efficient synthesis of precursor materials by precisely controlling reaction conditions, such as temperature, pH value, and stirring speed.

[0003] In existing reaction devices, impurities may be mixed in during the feeding process and the synthesis reaction may occur simultaneously. The presence of impurities will reduce the purity of the ternary precursor, react with the reactants during the reaction process, change the crystal structure of the precursor, and cause the material performance to not meet expectations, thus affecting product quality. Utility Model Content

[0004] To overcome the problem that existing reaction devices may contain impurities during the feeding process, which can reduce the purity of the ternary precursor, react with the reactants during the reaction, change the crystal structure of the precursor, and cause the material performance to fail to meet expectations, thus affecting product quality, this invention provides a ternary precursor reaction device for controlling the reaction atmosphere.

[0005] The technical solution is as follows: A ternary precursor reaction device for controlling the reaction atmosphere includes a reaction vessel and a cover plate; the upper end of the reaction vessel is fitted with a cover plate for sealing the vessel body, and the upper end of the cover plate is connected to two sets of connecting pipes, each set of connecting pipes has a filter ring on its inner side, the filter ring is fitted to the connecting pipe, the lower end of the reaction vessel is fitted with a positioning pipe, the outer wall of the positioning pipe is connected to a discharge pipe, the end of the discharge pipe away from the positioning pipe is fitted with a discharge plate, the discharge plate has several sets of discharge holes circumferentially opened inside, and a connecting plate is fitted to one end of the discharge plate and the discharge pipe.

[0006] Furthermore, both sets of connecting pipes are equipped with sealing rings at their upper ends, and connecting grooves for accommodating the sealing rings are opened inside the upper ends of both sets of connecting pipes. The sealing rings are fitted and installed with the connecting pipes through the connecting grooves.

[0007] Furthermore, the connecting plate has multiple sets of screws installed circumferentially inside, the discharge plate is fixed to the discharge pipe by multiple sets of screws, and an electromagnetic valve is installed on the outer wall of the discharge pipe.

[0008] Furthermore, a drive motor is installed at the upper end of the cover plate, a drive rod is installed inside the reactor, a stirring blade is fixed circumferentially at the outer end of the drive rod, and one end of the drive rod is fixedly installed to the output end of the drive motor.

[0009] Furthermore, an oxygen content control module is installed on the outside of the reactor, and an oxygen content electrode is installed on the upper end of the cover plate on the side of the drive motor. The oxygen content control module is electrically connected to the oxygen content electrode, a positioning plate is installed at the rear end of the oxygen content control module, and a load-bearing bracket is fixed at the lower end of the reactor.

[0010] Furthermore, two sets of microbubble generators are installed at the lower end of the reactor interior. One end of each set of microbubble generators is connected to a connecting pipe, which extends through the reactor to the outside.

[0011] Furthermore, two sets of connecting pipes are installed at the outer end of the connecting pipe, and the two sets of connecting pipes are connected to the connecting pipe. A nitrogen main switch is installed at the outer end of each set of connecting pipes, and a nitrogen flow control unit is installed on the side where the nitrogen main switch is closed.

[0012] Furthermore, an air master switch is installed at the outer end of another set of connecting pipes, and an air flow control unit is installed on one side of the air master switch. A docking plate is fixed at the end of both sets of connecting pipes away from the connecting pipe. The oxygen content control module is electrically connected to the nitrogen master switch, the nitrogen flow control unit, the air master switch, and the air flow control unit, respectively.

[0013] The beneficial effects are as follows: This utility model achieves the filtration of materials of different particle sizes by installing a detachable filter ring at the connection of the connecting pipe and selecting filter rings with different pore sizes according to different production requirements. During the feeding process, the filter ring filters the material entering the reactor in real time, effectively intercepting solid particulate impurities, preventing impurities from entering the reactor, ensuring the purity of the material in the reactor, reducing the impact of impurities on product performance, improving the quality of the final product, and effectively reducing the entry of solid particles into the reactor by using the filter ring to intercept solid particles, reducing the risk of blockage of the reactor inner wall and pipes, extending the equipment's operating time, reducing the number of shutdowns for cleaning due to blockage, and maintaining the long-term stable operation of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a ternary precursor reaction device for controlling the reaction atmosphere according to the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the filter ring of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the drive motor of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the connecting disc of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the microbubble generator of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Reactor; 2. Cover plate; 3. Connecting pipe; 4. Filter ring; 5. Sealing ring; 6. Drive rod; 7. Stirring blade; 8. Discharge pipe; 9. Solenoid valve; 10. Discharge tray; 11. Connecting tray; 12. Drive motor; 13. Oxygen content control module; 14. Oxygen content electrode; 15. Connecting pipe; 16. Microbubble generator; 17. Main nitrogen switch; 18. Nitrogen flow control unit; 19. Main air switch; 20. Air flow control unit; 21. Connecting tray; 22. Load-bearing bracket. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] The purpose of a ternary precursor reactor is to provide a suitable and controllable reaction environment for the synthesis of ternary precursors. The synthesis of ternary precursors is a complex chemical reaction involving the interaction of multiple chemical substances under specific conditions. This process requires precise control of numerous parameters, including reaction temperature, pH, reactant concentration, reaction time, and stirring speed, to ensure the reaction proceeds in the intended direction and produces ternary precursor particles with ideal particle size distribution, morphology, and chemical composition uniformity. The ternary precursor reactor is the key tool for achieving these controls; it provides a relatively closed and adjustable reaction space, making precise control of reaction conditions possible.

[0022] In actual production processes, the application of ternary precursor reactors is crucial. Firstly, in the new energy vehicle sector, with the global emphasis on environmental protection and sustainable development, the market demand for new energy vehicles, as clean energy vehicles, is showing a rapid growth trend. Ternary lithium batteries, as one of the main power sources for new energy vehicles, directly affect key indicators such as driving range, acceleration performance, and lifespan. Therefore, high-quality ternary precursors are essential for the production of high-performance ternary lithium batteries, and ternary precursor reactors can stably produce ternary precursors that meet the requirements, thus providing strong support for the development of new energy vehicles.

[0023] In materials science research, researchers need to conduct in-depth studies on the synthesis process of ternary precursors to explore new synthesis methods, optimize reaction conditions, and develop high-performance ternary precursor materials. Ternary precursor reaction devices provide researchers with an experimental platform, enabling them to conduct various experimental studies on a laboratory scale. By conducting experiments in ternary precursor reaction devices, researchers can precisely control reaction conditions, observe and analyze various phenomena during the reaction process, thereby gaining a deeper understanding of the synthesis mechanism of ternary precursors and providing theoretical support for the further development of ternary precursor materials.

[0024] Meanwhile, ternary precursor reactors also play a crucial role in enterprise R&D. To enhance product competitiveness, companies need to continuously research and improve the production processes of ternary precursors to produce ternary precursors with superior performance and lower costs. Ternary precursor reactors enable companies to optimize processes and conduct product trials under small-scale production conditions, reducing R&D costs and risks, and accelerating the time to market for new products.

[0025] Furthermore, ternary precursor reactors also have certain application value in the education field. In relevant professional courses in universities and vocational colleges, ternary precursor reactors can be used as teaching equipment, allowing students to understand the synthesis process of ternary precursors and the operating principles of the reactor through practice, cultivating students' practical abilities and engineering thinking, and training high-quality professionals for the lithium battery industry.

[0026] In terms of environmental protection, ternary precursor reactors also hold significant importance. With increasing emphasis on environmental protection, there is growing concern about waste emissions and resource recycling in industrial production processes. In the production of ternary precursors, by rationally designing the reactor and optimizing reaction conditions, the amount of chemical reagents used can be reduced, and the emissions of wastewater, waste gas, and other wastes can be decreased. Furthermore, some advanced ternary precursor reactors are equipped with waste treatment and recycling systems, enabling the effective treatment and recycling of waste generated during production, reducing environmental impact, improving resource utilization, and achieving green production.

[0027] Ternary precursor reactors are crucial equipment in the lithium battery industry chain. They provide a controllable reaction environment for the synthesis of ternary precursors and play an indispensable role in the production of ternary lithium batteries for various fields, including new energy vehicles, energy storage systems, and consumer electronics. Simultaneously, they also play an important role in scientific research, education, environmental protection, and the economy. With continuous technological advancements and increasing market demand, ternary precursor reactors will play an even more vital role in future development, making a greater contribution to promoting the development of related industries and technological progress.

[0028] like Figures 1-5 As shown, a ternary precursor reaction device for controlling the reaction atmosphere includes a reactor 1 and a cover plate 2. The upper end of the reactor 1 is fitted with a cover plate 2 for sealing the reactor body. The upper end of the cover plate 2 is connected to two sets of connecting pipes 3. The inner side of each set of connecting pipes 3 is provided with a filter ring 4, which is fitted to the connecting pipe 3. The lower end of the reactor 1 is equipped with a positioning pipe, and the outer wall of the positioning pipe is connected to a discharge pipe 8. The end of the discharge pipe 8 away from the positioning pipe is equipped with a discharge plate 10. The discharge plate 10 has several sets of discharge holes circumferentially opened inside. The discharge plate 10 and the discharge pipe 8 are both equipped with a connecting plate 11. The upper end of each set of connecting pipes 3 is provided with a sealing ring 5. The upper end of each set of connecting pipes 3 has a connecting groove for accommodating the sealing ring 5. The sealing ring 5 is fitted to the connecting pipe 3 through the connecting groove, which effectively enhances the sealing of the connecting pipe 3 during the feeding process, prevents material leakage during the feeding process, and ensures the stability and safety of the reaction environment inside the reactor 1.

[0029] Please see Figures 2-4 Multiple sets of screws are installed circumferentially inside the connecting plate 11. The discharge plate 10 is threadedly fixed to the discharge pipe 8 by multiple sets of screws. An electromagnetic valve 9 is installed on the outer wall of the discharge pipe 8 and is fixed by multiple sets of screws, ensuring a stable connection between the discharge pipe 8 and the discharge plate 10. This prevents the connection from loosening due to vibration or other reasons during the discharge process, ensuring smooth discharge. A drive motor 12 is installed on the upper end of the cover plate 2. A drive rod 6 is installed inside the reactor 1. A stirring blade 7 is circumferentially fixed on the outer end of the drive rod 6. One end of the drive rod 6 is fixed to the output end of the drive motor 12, which allows the materials in the reactor 1 to be fully mixed, improving the reaction efficiency. To ensure the synthesis quality of the ternary precursor, an oxygen content control module 13 is installed on the outside of the reactor 1. An oxygen content electrode 14 is installed on the upper end of the cover plate 2, located on one side of the drive motor 12. The oxygen content control module 13 is electrically connected to the oxygen content electrode 14. A positioning plate is installed at the rear end of the oxygen content control module 13. A load-bearing bracket 22 is fixed at the lower end of the reactor 1. The oxygen content electrode 14 is electrically connected to the oxygen content control module 13. The oxygen content in the reactor 1 can be monitored in real time, allowing operators to understand the changes in the reaction atmosphere in a timely manner. This facilitates timely adjustment of reaction conditions according to actual needs, improving the controllability of production and the stability of product quality.

[0030] Please see Figures 3-5Two sets of microbubble generators 16 are installed at the lower end of the interior of the reactor 1. A connecting pipe 15 is installed at one end of each microbubble generator 16, extending through the reactor 1 to the outside. The microbubble generators 16 generate tiny bubbles, which can stir and disperse the mixture during the reaction, further promoting material mixing and reaction, making the reaction more complete. Two sets of connecting pipes are installed at the outer end of the connecting pipe 15, communicating with it. A nitrogen main switch 17 is installed at the outer end of one set of connecting pipes, with a nitrogen flow control unit 18 installed on one side of the nitrogen main switch 17. An air main switch 19 is installed at the outer end of the other set of connecting pipes, with an air flow control unit 18 installed on one side of the air main switch 19. The flow control unit 20 has a docking plate 21 fixed at the end of each of the two sets of connecting pipes away from the connecting pipe 15. The oxygen content control module 13 is electrically connected to the nitrogen main switch 17, the nitrogen flow control unit 18, the air main switch 19, and the air flow control unit 20. By using the nitrogen main switch 17, the nitrogen flow control unit 18, the air main switch 19, and the air flow control unit 20, the flow rates of nitrogen and air can be precisely controlled, thereby accurately controlling the reaction atmosphere in the reactor 1. This provides a stable reaction environment for the synthesis of ternary precursors, allowing the reaction atmosphere to be flexibly switched and adjusted as needed during the reaction process to meet the requirements of different reaction stages and improve the flexibility and adaptability of production.

[0031] Before starting the synthesis of the ternary precursor, first place the filter ring 4 into the two sets of connecting pipes 3, and seal the feeding pipe to the connecting pipe 3. Next, according to the required discharge aperture, select a suitable discharge plate 10 and connect it to the discharge pipe 8. After installing the above parts, use the oxygen content control module 13 to set the required oxygen content and reaction partial pressure, and set the interlocking automatic adjustment and PID adjustment parameters of oxygen content. Turn on the nitrogen main switch and air main switch 19, and adjust the pressure of the microbubble generator 16 to a suitable value. Install the oxygen content electrode 14 at the upper end of the reactor 1 and connect it to the oxygen content control unit. Add an appropriate amount of pure water, precipitant and complexing agent to the reactor 1 through the feeding pipe. After the oxygen content and pressure of the reactor 1 reach the preset values, the synthesis can begin. The synthesis of the ternary precursor begins by adding molten metal, precipitant, and complexing agent to reactor 1. When the oxygen content in reactor 1 is lower than the preset value, the oxygen content control unit automatically reduces the opening of the nitrogen flow control unit 18 and increases the opening of the air flow control unit 20. When the oxygen content in reactor 1 is higher than the preset value, the oxygen content control unit automatically increases the opening of the nitrogen flow control unit 18 and decreases the opening of the air flow control unit 20. When the pressure in reactor 1 is lower than the preset value, the oxygen content control unit automatically increases the opening of the nitrogen flow control unit 18 and the air flow control unit 20. When the pressure in reactor 1 is higher than the preset value, the oxygen content control unit automatically decreases the opening of the nitrogen flow control unit 18 and the air flow control unit 20. When the synthesis is complete, the addition of molten metal, precipitant, and complexing agent to reactor 1 is stopped, the main nitrogen switch 17 and the main air switch 19 are closed, the oxygen content electrode 14 is removed, and the material in reactor 1 is discharged under the control of the electromagnetic valve 9. The discharged slurry is washed, dried, and packaged to obtain the corresponding precursor particles.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ternary precursor reaction apparatus for controlling the reaction atmosphere, characterized in that, It includes a reactor (1) and a cover plate (2); the upper end of the reactor (1) is fitted with a cover plate (2) for sealing the reactor body, and the upper end of the cover plate (2) is connected to two sets of connecting pipes (3). The inner side of the two sets of connecting pipes (3) is provided with filter rings (4), and the filter rings (4) are fitted with the connecting pipes (3). The lower end of the reactor (1) is equipped with a positioning pipe, and the outer wall of the positioning pipe is connected to a discharge pipe (8). The end of the discharge pipe (8) away from the positioning pipe is equipped with a discharge plate (10). The discharge plate (10) has several sets of discharge holes circumferentially opened inside. The discharge plate (10) and the discharge pipe (8) are both equipped with a connecting plate (11).

2. The ternary precursor reaction apparatus for controlling the reaction atmosphere according to claim 1, characterized in that, Both sets of connecting pipes (3) are provided with sealing rings (5) at their upper ends. The upper ends of both sets of connecting pipes (3) are provided with connecting grooves to accommodate the sealing rings (5). The sealing rings (5) are fitted and installed with the connecting pipes (3) through the connecting grooves.

3. The ternary precursor reaction apparatus for controlling the reaction atmosphere according to claim 1, characterized in that, Multiple sets of screws are installed circumferentially inside the connecting plate (11), and the discharge plate (10) is threadedly fixed to the discharge pipe (8) by multiple sets of screws. A solenoid valve (9) is installed on the outer wall of the discharge pipe (8).

4. The ternary precursor reaction apparatus for controlling the reaction atmosphere according to claim 1, characterized in that, A drive motor (12) is installed on the upper end of the cover plate (2), a drive rod (6) is installed inside the reactor (1), and a stirring blade (7) is fixed around the outer end of the drive rod (6). One end of the drive rod (6) is fixed to the output end of the drive motor (12).

5. A ternary precursor reaction apparatus for controlling the reaction atmosphere according to claim 4, characterized in that, An oxygen content control module (13) is installed on the outside of the reactor (1). An oxygen content electrode (14) is installed on the upper end of the cover plate (2) on one side of the drive motor (12). The oxygen content control module (13) is electrically connected to the oxygen content electrode (14). A positioning plate is installed at the rear end of the oxygen content control module (13). A load-bearing bracket (22) is fixed at the lower end of the reactor (1).

6. A ternary precursor reaction apparatus for controlling the reaction atmosphere according to claim 5, characterized in that, Two sets of microbubble generators (16) are installed at the lower end of the interior of the reactor (1). A connecting pipe (15) is installed at one end of each set of microbubble generators (16), and the connecting pipe (15) extends through the reactor (1) to the outside.

7. A ternary precursor reaction apparatus for controlling the reaction atmosphere according to claim 6, characterized in that, Two sets of connecting pipes are installed at the outer end of the connecting pipe (15). The two sets of connecting pipes are connected to the connecting pipe (15). A nitrogen main switch (17) is installed at the outer end of each set of connecting pipes. A nitrogen flow control unit (18) is installed on the side of the nitrogen main switch (17).

8. A ternary precursor reaction apparatus for controlling the reaction atmosphere according to claim 7, characterized in that, An air main switch (19) is installed at the outer end of another set of connecting pipes. An air flow control unit (20) is installed on one side of the air main switch (19). A docking plate (21) is fixed at the end of both sets of connecting pipes away from the connecting pipe (15). The oxygen content control module (13) is electrically connected to the nitrogen main switch (17), the nitrogen flow control unit (18), the air main switch (19), and the air flow control unit (20), respectively.

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