Reaction vessel

Abstract

The utility model belongs to material stirring technical field discloses the reation kettle, it includes kettle body, stirring subassembly, air inlet pipe and gas injection coil, stirring subassembly sets up in kettle body for stirring the material in kettle body, air inlet pipe is worn in kettle body and is connected with gas injection equipment, gas injection coil sets up in kettle body bottom and is curved extension, gas injection coil is connected with air inlet pipe, gas injection coil has a plurality of gas injection holes, at least part gas injection hole is inclined to set up to make gas meet when discharging. Therefore the reation kettle in the process of material stirring, through the setting of gas injection hole on gas injection coil, make gas can even spread to each area of kettle body bottom, ensure that the gas concentration in each area of kettle body bottom is close, thereby make the reaction rate in each area is similar, be favorable to ensure that the stability of final product quality is good.

Description

Technical Field

[0001] This utility model relates to the field of material mixing technology, and in particular to a reaction vessel. Background Technology

[0002] High-manganese binary precursors are crucial precursors for high-performance lithium-ion battery cathode materials, and their oxidation preparation process plays a decisive role in the final material's performance. The introduction of ammonia gas is a key step in regulating the reaction system during oxidation. Ammonia gas can undergo complexation reactions with metal ions in the reaction system, affecting the redox potential and reaction rate of the metal ions. It can also adjust the pH of the reaction system, promoting the formation of specific crystalline phases. Therefore, ensuring the uniform distribution of ammonia gas within the reactor is essential for achieving efficient and stable oxidation reactions and obtaining high-manganese binary precursors with uniform structure and excellent properties.

[0003] In existing technologies, ammonia injection in reactors used for the oxidation of high-manganese binary precursors mainly relies on injection pipes. These pipes are typically made of stainless steel to ensure stable operation in high-temperature, high-pressure, and corrosive reaction environments. The injection pipes are usually installed vertically or obliquely into the reactor from the top or side wall, with the length extending into the reactor designed according to the reactor's dimensions and process requirements.

[0004] Because the size and distribution of the holes in the injection pipe are fixed, when ammonia is injected, it will preferentially exit from the holes closer to the ammonia inlet with lower resistance, resulting in uneven distribution of ammonia at the bottom of the reactor. This leads to inconsistent reaction rates in different areas; some areas react too quickly, potentially causing excessive growth and agglomeration of product grains; while other areas react too slowly, and the product may not be completely oxidized, thus affecting the quality stability of the final product. Utility Model Content

[0005] The purpose of this invention is to provide a reaction vessel that solves the problem in the prior art where uneven gas distribution within the reaction vessel leads to inconsistent reaction rates in different areas, resulting in some areas reacting faster while others react slower.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a reaction vessel, which includes:

[0008] The vessel body;

[0009] A stirring assembly is disposed in the vessel body for stirring the materials inside the vessel body;

[0010] An air inlet pipe is inserted through the vessel body and connected to the air injection device;

[0011] A gas injection coil is provided at the bottom of the vessel and extends in a curved manner. The gas injection coil is connected to the gas inlet pipe. The gas injection coil has multiple gas injection holes, and at least some of the gas injection holes are opened at an angle so that the gases converge when discharged.

[0012] Optionally, the air injection port includes a first air injection port opened along a first direction and a second air injection port opened along a second direction, the first direction intersecting the second direction, and the gas discharged from the first air injection port and the second air injection port intersecting between the two opposing air injection coils.

[0013] Optionally, the diameter of the first injection hole decreases along the gas discharge direction.

[0014] Optionally, the diameter of the second injection port decreases along the gas discharge direction.

[0015] Optionally, the air injection port further includes a third air injection port, which is opened on the bottom wall of the air injection coil and exhausts air in a vertical direction.

[0016] Optionally, the gas injection coil has multiple bends, and the reaction vessel further includes:

[0017] The air guide pipe has an air inlet communicating with the air inlet pipe and an air guide channel communicating with the air inlet. The air guide channel is connected to a plurality of the bends of the air injection coil to uniformly guide gas into the plurality of the bends.

[0018] Optionally, the inner diameter of the air guide tube increases from the side closer to the air inlet to the side farther away from the air inlet.

[0019] Optionally, two air guide pipes are provided at intervals, and the air injection coil is located between the two air guide pipes.

[0020] Optionally, the reaction vessel further includes:

[0021] A support frame is disposed on the vessel body and fixedly connected to the bottom wall of the gas injection coil.

[0022] Optionally, the stirring assembly includes:

[0023] A stirring shaft is rotatably connected to the vessel body;

[0024] A stirring paddle is disposed on the stirring shaft for stirring materials;

[0025] A drive unit is connected to the stirring shaft to drive the stirring shaft to rotate.

[0026] The beneficial effects of this utility model are:

[0027] During material stirring, the material is added to the reactor, and gas is simultaneously injected into the inlet pipe through the gas injection device. The gas enters the gas injection coil along the inlet pipe and then exits into the reactor body through multiple gas injection holes. The curved extension of the gas injection coil allows the gas to exit to various areas at the bottom of the reactor body, and some gas injection holes allow the gas to converge during exit, enabling further diffusion. The stirring components then agitate the gas and material, ensuring thorough mixing and completing the reaction. Therefore, during material stirring, the gas in this reactor, through the gas injection holes on the gas injection coil, can uniformly diffuse the gas to various areas at the bottom of the reactor body, ensuring similar gas concentrations in each area. This results in similar reaction rates in each area, contributing to the stability and high quality of the final product. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the internal structure of the reactor in an embodiment of this utility model;

[0029] Figure 2 This is a cross-sectional view of the reactor structure in an embodiment of this utility model;

[0030] Figure 3 This is a partial structural cross-sectional view of the gas injection coil of the reactor in an embodiment of this utility model;

[0031] Figure 4 This is a cross-sectional view of the gas guide pipe of the reactor in an embodiment of this utility model.

[0032] In the picture:

[0033] 1. Vessel body; 2. Stirring assembly; 21. Stirring shaft; 22. Stirring paddle; 23. Drive unit; 3. Air inlet pipe; 4. Air injection coil; 41. First air injection port; 42. Second air injection port; 43. Third air injection port; 5. Air guide pipe; 51. Air inlet; 52. Air guide channel; 6. Support frame. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] This utility model discloses a reaction vessel.

[0039] Reference Figures 1 to 4 The reactor includes a vessel body 1, a stirring assembly 2, an inlet pipe 3, and an injection coil 4. The stirring assembly 2 is disposed in the vessel body 1 to stir the materials inside the vessel body 1; the inlet pipe 3 passes through the vessel body 1 and is connected to an injection device (not shown in the figure); the injection coil 4 is disposed at the bottom of the vessel body 1 and extends in a curved manner, and is connected to the inlet pipe 3. The injection coil 4 has multiple injection holes, at least some of which are opened at an angle so that the gases converge when discharged.

[0040] Specifically, a feed inlet is provided on the side of the vessel body 1 for adding materials, which can be high-manganese binary precursors. A stirring assembly 2 is provided in the middle of the vessel body 1 for stirring the materials. The stirring structure can be designed according to the stirring requirements of the materials. An air inlet pipe 3 is installed on the vessel body 1. One end of the air inlet pipe 3 is connected to a gas injection device, which can continuously inject gases such as ammonia. The other end of the air inlet pipe 3 is located inside the vessel body 1 and is connected to a gas injection coil 4. The gas injection coil 4 is fixed to the inner bottom of the vessel body 1. It can extend in a serpentine or spiral shape. Multiple gas injection holes are distributed at intervals along the extension direction of the gas injection coil 4. Some of the gas injection holes are opened at an angle. When the angles intersect, the gases discharged from two gas injection holes will converge. When they converge, a certain impact will be generated, which will allow the gases to diffuse fully.

[0041] During material stirring, the material is added to the reactor, and gas is simultaneously injected into the inlet pipe 3 through the gas injection device. The gas enters the gas injection coil 4 along the inlet pipe 3, and then exits into the reactor body 1 through multiple gas injection holes. The curved extension of the gas injection coil 4 allows the gas to exit to various areas at the bottom of the reactor body 1, and some gas injection holes allow the gas to converge during exit, enabling further diffusion. The stirring component 2 then agitates the gas, ensuring thorough mixing with the material to complete the reaction. Therefore, during material stirring, the gas in this reactor, through the gas injection holes on the gas injection coil 4, can uniformly diffuse the gas to various areas at the bottom of the reactor body 1, ensuring similar gas concentrations in different areas. This results in similar reaction rates in each area, contributing to the stability and quality of the final product.

[0042] Optionally, the air injection port includes a first air injection port 41 opened along a first direction and a second air injection port 42 opened along a second direction. The first direction and the second direction intersect, and the gas discharged from the first air injection port 41 and the second air injection port 42 between the two opposing air injection coils 4 intersect.

[0043] Specifically, the gas injection coil 4 extends in a serpentine curve, forming multiple straight segments and curved segments. The straight segments are all located in the same horizontal plane. A first gas injection hole 41 and a second gas injection hole 42 are opened on the lower side of the straight segments. In the two opposite straight segments, the first direction and the second direction form an angle of less than 180°, so that the gas discharged from the first gas injection hole 41 and the gas discharged from the second gas injection hole 42 can converge. The angle between the first direction and the second direction can be designed according to the actual gas convergence effect. This utility model does not limit this.

[0044] By setting a first air injection hole 41 and a second air injection hole 42, when gas enters the air injection coil 4, the gas will be discharged from the first air injection hole 41 and the second air injection hole 42 at the same time. The gas discharged from the first air injection hole 41 flows in the first direction, while the gas discharged from the second air injection hole 42 flows in the second direction. Between the two opposing air injection coils 4, due to the small distance between them, the discharged gas will converge at one point. The converging gas will generate an impact, causing the gas to diffuse into the surrounding space, thereby effectively improving the gas diffusion effect and facilitating the uniform distribution of gas in various areas.

[0045] Optionally, the diameter of the first injection port 41 decreases along the gas discharge direction. The diameter of the second injection port 42 also decreases along the gas discharge direction.

[0046] Specifically, the diameters of both the first injection port 41 and the second injection port 42 can be gradually varied to provide an acceleration effect during gas discharge, thereby increasing the impact force when the gases converge and thus improving the gas diffusion effect. It should be understood that either the first injection port 41 or the second injection port 42 can be configured as a variable diameter structure, or both can be configured as variable diameter structures. An extension tube can also be provided to enhance the acceleration effect on the gas. The design can be tailored to the actual gas diffusion requirements, as long as it can accelerate the gas discharge and improve the impact effect after convergence. This invention does not impose any limitations on this aspect.

[0047] Optionally, the air injection port also includes a third air injection port 43, which is opened on the bottom wall of the air injection coil 4 and exhausts air in the vertical direction.

[0048] Specifically, a third gas injection hole 43 is opened on the bottom wall of the gas injection coil 4, which is vertically downward, and can discharge gas in a vertical direction. The third gas injection hole 43 is located between the first gas injection hole 41 and the second gas injection hole 42, so that the gas can be discharged into the interior of the vessel body 1 in multiple directions to further improve the gas diffusion effect.

[0049] Optionally, the gas injection coil 4 has multiple bends, and the reactor also includes a gas guide pipe 5. The gas guide pipe 5 has an inlet 51 communicating with the inlet pipe 3 and a gas guide channel 52 communicating with the inlet 51. The gas guide channel 52 communicates with the multiple bends of the gas injection coil 4 to uniformly introduce gas into the multiple bends.

[0050] Specifically, the gas guide pipe 5 is elongated and fixed to the inner wall of the vessel body 1. The fixing method can be welding, bonding, snap-fitting, or screw connection. The gas guide pipe 5 is hollow, with its interior serving as a gas guide channel 52. An air inlet 51, communicating with the gas guide channel 52, is perforated on the surface of the gas guide pipe 5. The air inlet 51 is sealed and connected to the air inlet pipe 3. Furthermore, the gas guide pipe 5 corresponds to multiple curved sections of the gas injection coil 4 and is connected via connectors.

[0051] By setting up the gas guide pipe 5, when the gas is injected into the gas inlet pipe 3, the gas will first enter the gas guide pipe 5 and then be introduced into multiple curved sections by the gas guide pipe 5, so that the gas can enter the gas injection coil 4 evenly, thereby improving the uniformity of gas distribution in the gas injection coil 4 and facilitating the uniform entry of gas into the vessel body 1.

[0052] Optionally, the inner diameter of the air duct 5 increases from the side closer to the air inlet 51 to the side farther away from the air inlet 51.

[0053] Specifically, the air inlet 51 can be opened at one end of the air guide pipe 5 or in the middle of the air guide pipe 5. In this embodiment, the air inlet 51 is located in the middle of the air guide pipe 5. The inner diameter of the middle of the air guide pipe 5 is smaller, while the inner diameter of both ends is larger. This makes the space in the middle of the air guide channel 52 small and the space at both ends large. After the gas enters the air guide channel 52 through the air inlet 51, it quickly diffuses to both ends, ensuring that the gas can enter the multiple curved sections of the air injection coil 4 evenly.

[0054] Optionally, two air guide pipes 5 are provided at intervals, and the air injection coil 4 is located between the two air guide pipes 5.

[0055] Specifically, a gas guide pipe 5 is provided on both sides of the gas injection coil 4, and each gas guide pipe 5 is connected to an air inlet pipe 3. The two air inlet pipes 3 can be connected to two sets of gas injection equipment respectively, or they can be connected to a set of gas injection equipment together, so that the gas can enter from both sides of the gas injection coil 4 at the same time, thereby further improving the uniformity of gas distribution in the gas injection coil 4.

[0056] Optionally, the reactor also includes a support frame 6. The support frame 6 is disposed on the reactor body 1 and fixedly connected to the bottom wall of the gas injection coil 4.

[0057] Specifically, a support frame 6 is installed on the inner bottom wall of the vessel body 1. The support frame 6 can be composed of multiple support legs, and the upper end of the support legs is fixedly connected to the lower side of the gas injection coil 4. The fixed connection can be achieved by bolting, snap-fitting, or welding. By setting the support frame 6, the gas injection coil 4 can be supported inside the vessel body 1, so that sufficient space is formed between the gas injection coil 4 and the inner bottom wall of the vessel body 1 for gas to enter.

[0058] Optionally, the stirring assembly 2 includes a stirring shaft 21, a stirring paddle 22, and a driving component 23. The stirring shaft 21 is rotatably connected to the vessel body 1; the stirring paddle 22 is disposed on the stirring shaft 21 for stirring materials; and the driving component 23 is connected to the stirring shaft 21 to drive the stirring shaft 21 to rotate.

[0059] Specifically, the stirring shaft 21 is rotatably connected to the vessel body 1 via bearings. A stirring paddle 22 is installed at the lower end of the stirring shaft 21. The stirring paddle 22 can be plate-shaped, rod-shaped, or of other shapes, and can be designed according to the material stirring requirements; this invention does not impose any limitations. The drive component 23 can be fixed to the outer top wall of the vessel body 1 via a mounting bracket. It can be a servo motor, and its output end can be fixedly connected to the upper end of the stirring shaft 21 via a coupling.

[0060] When it is necessary to stir the material, the drive unit 23 is activated, which drives the stirring shaft 21 to rotate. The stirring shaft 21 drives the stirring paddle 22 to rotate, thereby stirring the material inside the vessel 1.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A reaction vessel, characterized in that, include: The vessel body (1); A stirring assembly (2) is disposed in the vessel body (1) for stirring the materials inside the vessel body (1); An air inlet pipe (3) is inserted through the vessel body (1) and connected to the air injection device; A gas injection coil (4) is provided at the bottom of the vessel body (1) and extends in a curved manner. The gas injection coil (4) is connected to the air inlet pipe (3). The gas injection coil (4) has a plurality of gas injection holes, at least some of which are opened at an angle so that the gases converge when discharged.

2. The reaction vessel according to claim 1, characterized in that, The air injection port includes a first air injection port (41) opened along a first direction and a second air injection port (42) opened along a second direction. The first direction and the second direction intersect. Between the two opposing air injection coils (4), the gas discharged from the first air injection port (41) and the second air injection port (42) intersect.

3. The reaction vessel according to claim 2, characterized in that, The diameter of the first air injection hole (41) decreases along the gas discharge direction.

4. The reaction vessel according to claim 2, characterized in that, The diameter of the second air injection hole (42) decreases along the gas discharge direction.

5. The reaction vessel according to claim 1, characterized in that, The air injection port also includes a third air injection port (43), which is located on the bottom wall of the air injection coil (4) and exhausts air in the vertical direction.

6. The reaction vessel according to any one of claims 1 to 5, characterized in that, The gas injection coil (4) has multiple bends, and the reactor also includes: The air guide pipe (5) has an air inlet (51) communicating with the air inlet pipe (3) and an air guide channel (52) communicating with the air inlet (51). The air guide channel (52) is connected to a plurality of the bends of the air injection coil (4) to uniformly introduce gas into the plurality of the bends.

7. The reaction vessel according to claim 6, characterized in that, The inner diameter of the air duct (5) increases from the side closer to the air inlet (51) to the side farther away from the air inlet (51).

8. The reaction vessel according to claim 6, characterized in that, Two air guide pipes (5) are spaced apart, and the air injection coil (4) is located between the two air guide pipes (5).

9. The reaction vessel according to any one of claims 1 to 5, characterized in that, The reaction vessel also includes: A support frame (6) is disposed on the vessel body (1) and fixedly connected to the bottom wall of the gas injection coil (4).

10. The reaction vessel according to any one of claims 1 to 5, characterized in that, The stirring assembly (2) includes: A stirring shaft (21) is rotatably connected to the vessel body (1); A stirring paddle (22) is disposed on the stirring shaft (21) for stirring materials; A drive unit (23) is connected to the stirring shaft (21) to drive the stirring shaft (21) to rotate.

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