High-efficiency reaction kettle

Abstract

The present disclosure relates to the technical field of ternary precursor production, and provides a high-efficiency reaction kettle. The high-efficiency reaction kettle comprises: a kettle body for accommodating slurry; a guide cylinder fixed at the top of the kettle body and extending downward, a first flow guide port being formed in the bottom of the guide cylinder, and a second flow guide port being formed in the side wall of the upper portion of the guide cylinder; a plurality of feeding pipes, openings of at least some of the feeding pipes being arranged in the guide cylinder; a stirring device passing through the guide cylinder and passing out of the first flow guide port of the guide cylinder, so as to drive the slurry to move downward in the guide cylinder and drive the slurry to move toward the periphery of the kettle body at the bottom of the kettle body; stop plates arranged on the inner side wall of the kettle body and extending in the height direction of the kettle body; and a solid-liquid separation device arranged at the top of the kettle body and located outside the guide cylinder, so as to extract clear liquid in the slurry from the kettle body. The reaction kettle can improve the production efficiency and the product quality.

Description

A high-efficiency reactor

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to application number 202410182135.8, filed with the Patent Office of China on February 18, 2024, entitled “A High-Efficiency Reactor,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of ternary precursor production, and in particular to a high-efficiency reactor. Background Art

[0004] In the production process of ternary precursors, the synthesis process is the core process of the entire product production. In the existing technology, when synthesizing ternary precursors, the raw materials are generally added to a reactor, and then stirred to disperse the raw materials in the slurry in the reactor in a timely manner to ensure that the raw materials react fully.

[0005] During the reaction, the slurry needs to be stirred by the stirring device in the reactor to form a flow field in the reactor. Under ideal conditions, the flow field moves rapidly downward in the middle of the reactor to mix the raw materials; then moves from the bottom of the reactor to the edge of the reactor; after reaching the edge, it moves upward more slowly to allow the raw materials to fully react; finally, it moves back to the middle of the reactor in the upper area to re-circulate.

[0006] However, the above reaction process is relatively slow and the productivity is low.

[0007] Summary of the Invention

[0008] In view of this, the present disclosure provides a high-efficiency reactor, which can improve production efficiency and product quality.

[0009] The present disclosure provides a high-efficiency reactor, comprising:

[0010] a kettle body configured to contain the slurry;

[0011] A guide tube is fixed to the top of the kettle body and extends downward, with a first guide port formed at the bottom of the guide tube and a second guide port formed on the upper side wall of the guide tube;

[0012] A feed pipe, wherein there are multiple feed pipes, and at least some of the openings of the feed pipes are arranged in the guide cylinder;

[0013] a stirring device, which is provided in the guide cylinder and passes through the first guide port of the guide cylinder to drive the slurry to move downward in the guide cylinder and to drive the slurry to move toward the periphery of the kettle at the bottom of the kettle;

[0014] a baffle, arranged on the inner side wall of the kettle body and extending along the height direction of the kettle body;

[0015] The solid-liquid separation device is arranged on the top of the kettle body and is located outside the guide cylinder to extract the clear liquid in the slurry in the kettle body.

[0016] Furthermore, a shielding portion is formed on the guide cylinder at a position where the second guide port is not provided. At the same height of the kettle body, the position of the baffle corresponds to the position of the second guide port, and the position of the solid-liquid separation device corresponds to the position of the shielding portion.

[0017] Furthermore, there are multiple second guide ports and shielding portions, and the second guide ports and shielding portions are arranged at intervals. There are multiple baffles, and the multiple baffles are arranged in sequence on the inner side wall of the kettle body along the circumference of the kettle body. The position of each baffle corresponds to the position of one second guide port, and the solid-liquid separation device is arranged between two baffles.

[0018] Furthermore, the solid-liquid separation device is provided with multiple filter elements, and the distance between the filter element on the solid-liquid separation device farthest from the axis of the kettle body and the axis of the kettle body is greater than the distance between the side edge of the baffle away from the side wall of the kettle body and the axis of the kettle body.

[0019] Furthermore, the height of the upper end of the baffle in the kettle body is higher than the height of the lower edge of the second guide port in the kettle body, and the height of the lower end of the filter element in the kettle body.

[0020] Furthermore, the stirring device includes a rotating shaft, a first stirring paddle and a second stirring paddle. The rotating shaft is passed through the guide cylinder, and the first stirring paddle and the second stirring paddle are arranged on the rotating shaft in sequence from top to bottom. In the height direction of the kettle body, the first stirring paddle is located in the guide cylinder and is lower than the lower edge of the second guide port, and the height of the second stirring paddle in the kettle body is lower than the height of the first guide port.

[0021] Furthermore, the feed pipe includes a first feed pipe and a second feed pipe, the mouth of the first feed pipe corresponds to the position of the first stirring paddle and is lower than the height of the first stirring paddle in the synthesis reactor, and the mouth of the second feed pipe corresponds to the position of the second stirring paddle and is higher than the height of the second stirring paddle in the synthesis reactor.

[0022] Furthermore, the first stirring propeller is a four-pitch-blade stirring propeller, and the second stirring propeller is a six-liquid disc turbine propeller.

[0023] Furthermore, the height of the highest point of the filter element is higher than the highest height of the baffle.

[0024] Furthermore, the solid-liquid separation device includes a filter element, a fixing frame and a connecting pipe. The solid-liquid separation device is fixed to the kettle body through the connecting frame. One end of the connecting pipe is connected to the filter element, and the other end extends out of the kettle body.

[0025] In summary, in the present disclosure, the provision of the guide cylinder, stirring device, baffle, and solid-liquid separation device can improve production efficiency while also enhancing product quality. Furthermore, by defining the positions of each structure, the flow field can be better optimized, thereby improving reaction speed and product quality.

[0026] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented in accordance with the contents of the specification. In addition, in order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the following specifically cites preferred embodiments and describes them in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of a high-efficiency reactor provided in an embodiment of the present disclosure.

[0028] FIG2 is a schematic diagram showing the positional relationship between the guide cylinder, the solid-liquid separation device and the baffle plate when viewed along the axis of the kettle body.

[0029] FIG3 is a schematic diagram showing the cross-sectional structure of the guide cylinder.

[0030] FIG4 is a schematic diagram showing the axial structure of the fixing frame of the solid-liquid separation device.

[0031] FIG5 is a schematic diagram showing the structure of the fixing frame in FIG4 when viewed from bottom.

[0032] FIG6 is a schematic structural diagram of a filter element of a solid-liquid separation device. DETAILED DESCRIPTION

[0033] In order to further illustrate the technical means and effects adopted by the present disclosure to achieve the predetermined invention objectives, the following is a detailed description with reference to the accompanying drawings and preferred embodiments.

[0034] The present disclosure provides a high-efficiency reactor, which can improve production efficiency and product quality.

[0035] FIG1 is a schematic diagram of the structure of a high-efficiency reactor according to an embodiment of the present disclosure. FIG2 is a schematic diagram showing the positional relationship between the guide tube, solid-liquid separator, and baffle, as viewed along the axis of the reactor. FIG3 is a schematic diagram showing the cross-sectional structure of the guide tube. As shown in FIG1 to FIG3 , the high-efficiency reactor according to the present disclosure includes a reactor body 10, a guide tube 20, an agitator 30, a feed pipe 40, a baffle 50, and a solid-liquid separator 60. The reactor body 10 is configured to accommodate slurry. The guide tube 20 is fixed to the top of the reactor body 10 and extends downward. Openings are formed at the bottom and upper sidewalls of the guide tube 20 to form a first guide port 21 at the bottom of the guide tube 20 and a second guide port 22 at the upper sidewall of the guide tube 20. There are multiple feed pipes 40, at least some of which have openings located within the guide tube 20. The agitator 30 is disposed within the guide tube 20 and exits through the first guide port 21 of the guide tube 20. That is, the stirring device 30 is positioned away from the top end of the kettle 10 and below the height of the first guide port 21. This drives the slurry downward within the guide cylinder 20 and toward the periphery of the kettle 10 at the bottom of the kettle 10. The baffle 50 is disposed on the inner sidewall of the kettle 10 and extends along the height of the kettle 10. The solid-liquid separator 60 is disposed at the top of the kettle 10 and located outside the guide cylinder 20 to extract the clear liquid from the slurry within the kettle 10.

[0036] In this embodiment, when producing a ternary precursor, the raw materials can first be fed into the slurry in the area covered by the guide tube 20 of the kettle body 10 through the feed pipe 40. Then, driven by the stirring device 30, the slurry mixed with the raw materials is driven downward in the guide tube 20 and driven toward the periphery of the kettle body 10 at the bottom of the kettle body 10. Due to the presence of the guide tube 20, it can guide the slurry downward in the area covered by the guide tube 20 to prevent the slurry from moving toward the periphery. After the slurry flows out of the first guide port 21, the stirring device 30 can drive the slurry to move toward the periphery of the kettle body 10. After the slurry reaches the side wall area of ​​the kettle body 10, the presence of the baffle can guide the movement of the slurry again, so that the slurry moves toward the upper part of the kettle body 10. At the upper part of the kettle body 10, the slurry re-enters the interior of the guide tube 20 through the second guide port 22, forming a circulating flow field. Throughout the cycle, the raw materials can be evenly mixed with the original slurry and react more quickly. Since the circulating flow field is guided by the guide cylinder 20, the stirring device 30 and the baffle in the kettle body 10, the circulation route of the entire flow field is relatively clear, with less turbulence, which can facilitate the reaction. Furthermore, due to the presence of the solid-liquid separation device 60, it can filter the slurry and absorb the clear liquid inside the kettle body 10, without the need to move the slurry to a separate concentration kettle, which can improve production efficiency and ensure the consistency of the reaction environment. Therefore, the reactor can improve production efficiency and improve product quality at the same time.

[0037] Furthermore, a shielding portion 23 is formed at the top of the guide tube 20, where the second guide opening 22 is not located. At the same height of the kettle body 10, the position of the aforementioned baffle 50 corresponds to the position of the second guide opening 22, while the position of the solid-liquid separator 60 corresponds to the position of the shielding portion 23. That is, on a single cross-section perpendicular to the axis of the kettle body 10, the line connecting at least one baffle 50 and the axis of the kettle body 10 passes through the second guide opening 22. The line connecting at least part of the solid-liquid separator 60 and the axis of the kettle body 10 passes through the shielding portion 23.

[0038] Through the above-mentioned arrangement, the baffle 50 can better guide the flow field of the slurry re-entering the guide cylinder 20 from the second guide port 22, and the solid-liquid separation device 60 is arranged in an area with a weaker flow field, thereby eliminating or reducing the impact of the solid-liquid separation device 60 on the flow field in the kettle body 10 when it is arranged in the kettle body 10.

[0039] Furthermore, in this embodiment, there can be multiple second guide openings 22 and shielding portions 23, and the second guide openings 22 and shielding portions 23 are spaced apart. That is, a shielding portion 23 is formed between two second guide openings 22, and a second guide opening 22 is formed between two shielding portions 23.

[0040] Correspondingly, there are also multiple baffles 50, which are sequentially arranged on the inner sidewall of the kettle body 10 along the circumference of the kettle body 10. The position of each baffle 50 corresponds to the position of a second guide port 22. The solid-liquid separation device 60 is arranged between two adjacent baffles 50.

[0041] Continuing with FIG2 , in this embodiment, the solid-liquid separator 60 is provided with multiple filter elements 61. The distance between the filter element 61 furthest from the axis of the kettle body 10 and the axis of the kettle body 10 (as shown in FIG2 a , where the circles in FIG2 only represent the actual distribution range of the filter elements 61) is greater than the distance between the side edge of the baffle 50 away from the sidewall of the kettle body 10 and the axis of the kettle body 10 (as shown in FIG2 b ). In other words, at least a portion of the solid-liquid separator 60 is disposed within the flow field optimized by the baffle 50 to minimize the impact on the flow field within the kettle body 10.

[0042] More specifically, as shown in FIG2 , viewed along the axis of the kettle 10, the distance between the side edge of the baffle 50 away from the sidewall of the kettle 10 and the axis of the kettle 10 is D / 5 to 3D / 50, where D is the diameter of the kettle 10. The distance between the center of the filter element 61 of the solid-liquid separation device 60, which is farthest from the axis of the kettle 10, and the axis of the kettle 10 is greater than D / 4, where D is the diameter of the kettle 10.

[0043] Continuing with reference to Figure 1, in this embodiment, the height of the upper end of the baffle 50 within the kettle body 10 is higher than the height of the lower edge of the second guide port 22 within the kettle body 10. The height of the lower end of the filter element 61 within the kettle body 10 is lower than the height of the upper end of the baffle 50 within the kettle body 10 and the height of the lower edge of the second guide port 22 within the kettle body 10. Due to the arrangement of the guide cylinder 20, the areas with faster slurry flow rates are located at the first guide port 21 and the second guide port 22. Through the above arrangement, the lowest point of the filter element 61 can be located approximately in the middle of the baffle 50, which enables the filter element 61 to be located in a weaker flow field, further reducing the impact of the solid-liquid separation device 60 on the flow field.

[0044] Furthermore, in this embodiment, the sum of the areas of all second guide ports 22 is 1-1.5 times the cross-sectional area of ​​the guide tube 20 perpendicular to the axis. Through the above arrangement, the flow field can quickly and efficiently enter the guide tube 20, accelerating the material flow rate, shortening the synthesis time, and effectively ensuring the product particle size distribution.

[0045] Furthermore, for a single second flow guide opening 22 , the height of the second flow guide opening 22 is 0.7-1.1 times the width of the second flow guide opening 22 along the circumference of the kettle body 10 .

[0046] 1 and 3 , in this embodiment, a first insulation sleeve (not shown) is provided in the side wall of the kettle body 10, a second insulation sleeve 24 is provided in the side wall of the guide cylinder 20, and a connecting port for entering and exiting the insulation liquid is provided at the connection between the guide cylinder 20 and the top of the kettle body 10 (not shown).

[0047] An outward flange 25 is formed at the bottom edge of the guide cylinder 20 to guide the flow of the slurry and reduce interference with the flow field.

[0048] Figure 4 is a schematic diagram of the axial structure of the fixed frame of the solid-liquid separation device, Figure 5 is a schematic diagram of the bottom-up structure of the fixed frame in Figure 4, and Figure 6 is a schematic diagram of the structure of the filter element of the solid-liquid separation device. As shown in Figures 1, 4, and 6, the solid-liquid separation device 60 also includes a fixed frame 62 and a connecting pipe 63. The solid-liquid separation device 60 is fixed to the kettle body 10 via the fixed frame 62. One end of the connecting pipe 63 is connected to the filter element 61, and the other end extends outside the kettle body 10 and is configured to be connected to the pump body 70. The provision of the connecting pipe 63 facilitates adjustment of the height of the filter element 61 extending into the kettle body 10. During solid-liquid separation, the liquid level can be completely submerged in the filter element 61 to prevent air suction.

[0049] Furthermore, the height of the end of the filter element 61 facing the connecting tube 63 within the kettle body 10, i.e., the highest point of the filter element 61, is higher than the highest point of the baffle 50. In other words, the highest point of the baffle 50 is located in the middle of the filter element 61. This positioning reduces the impact of the baffle 50 on the flow field of the slurry within the kettle body 10 caused by its position above the kettle body 10. It also satisfies the required installation height of the filter element 61 within the kettle body 10.

[0050] The connecting pipe 63 extends in a vertical direction and has a threaded opening 631 for connection formed at one end away from the fixing frame 62. The filter element 61 has a first connecting portion 611 formed on one end facing the second connecting pipe 63. The filter element 61 is threadedly engaged with the connecting pipe 63 through the first connecting portion and is fixed to the connecting pipe 63 in a vertical direction.

[0051] The filter element 61 can be alloy sintered felt or non-metal sintered felt.

[0052] In this embodiment, the diameter of each filter element 61 is 10-160 mm, preferably 10-50 mm. The gap between two filter elements 61 (i.e., c in FIG5 ) is 1 / 6d-d, where d is the diameter of the filter element 61.

[0053] By limiting the length and diameter of the filter element 61, during solid-liquid separation, the liquid in the slurry can be efficiently sucked out, and solids can be prevented from being blocked between the two filter elements 61 and reducing the filtering performance of the filter element 6151.

[0054] A second connecting portion 612 is formed on one end of the filter element 61 away from the fixing frame 62. The solid-liquid separation device 60 also includes a fixing plate 64. The filter element 61 is connected to the fixing plate 64 via the second connecting portion 612. The fixing plate is fixed to the kettle body 10. This arrangement prevents the filter element 61 from shaking due to the flow field within the kettle body 10, which could reduce the filtering effect.

[0055] Further, referring to FIG. 4 , a plurality of snap-fit ​​portions 621 are formed on the fixing frame 62 , and a plurality of clips (not shown) are formed on the kettle body 10 . The snap-fit ​​portions 621 are combined with the clips on the reactor to fix the fixing frame 62 .

[0056] Continuing with Figure 1 , in this embodiment, the stirring device 30 includes a rotating shaft 31, a first stirring paddle 32, and a second stirring paddle 33. The rotating shaft 31 is disposed within the guide cylinder 20, and the first stirring paddle 32 and the second stirring paddle 33 are sequentially disposed on the rotating shaft 31 from top to bottom. In the height direction of the kettle body 10, the first stirring paddle 32 is located within the guide cylinder 20 and is lower than the lower edge of the second guide port 22. The second stirring paddle 33 is located within the kettle body 10 at a height lower than the first guide port 21, that is, the second stirring paddle 33 is located outside the guide cylinder 20.

[0057] Through the above arrangement, the first stirring paddle 32 can drive the slurry to move downward in the guide cylinder 20 , while the second stirring paddle 33 can drive the slurry at the bottom of the kettle body 10 to move toward the periphery of the kettle body 10 .

[0058] Furthermore, the feed pipe 40 includes a first feed pipe 41 and a second feed pipe 42. The opening of the first feed pipe 41 corresponds to the position of the first stirring paddle 32 and is lower than the height of the first stirring paddle 32 in the synthesis vessel. The opening of the second feed pipe 42 corresponds to the position of the second stirring paddle 33 and is higher than the height of the second stirring paddle 33 in the synthesis vessel.

[0059] By limiting the position of the feed pipe and the stirring paddle, the stirring paddle can better mix the raw materials and avoid agglomeration of the raw materials.

[0060] Furthermore, in this embodiment, the height of the lower end of the baffle 50 in the kettle body 10 is lower than the height of the second stirring paddle 33 in the kettle body 10, so as to better guide the slurry.

[0061] In this embodiment, the first stirring paddle 32 may be a four-pitch-blade stirring paddle, and the second stirring paddle 33 may be a six-fluid disc turbine paddle.

[0062] In the axial direction perpendicular to the rotating shaft 31, the distance from the nozzle of the first feeding pipe to the edge of the first stirring paddle 32, and the distance from the nozzle of the second feeding pipe to the edge of the second stirring paddle 33 are both D / 120-D / 12, where D is the diameter of the synthesis reactor.

[0063] Furthermore, the first feeding pipe and the second feeding pipe can be fixed to the inner wall of the guide cylinder 20 through a connecting rod to prevent the two from shaking.

[0064] In summary, in the present disclosure, the arrangement of the guide cylinder 20, stirring device 30, baffle 50, and solid-liquid separation device 60 can improve both production efficiency and product quality. Furthermore, by defining the positions of each structure, the flow field can be optimized, thereby improving reaction speed and product quality.

[0065] The above description is merely a preferred embodiment of the present disclosure and does not constitute any form of limitation to the present disclosure. Although the present disclosure has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present disclosure. Any technician familiar with the present profession can make slight changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present disclosure. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure are still within the scope of the technical solution of the present disclosure. Industrial Applicability

[0066] The present invention, through the arrangement of a guide cylinder, a stirring device, a baffle, and a solid-liquid separation device, can improve production efficiency while also enhancing product quality. By defining the positions of each structure, the flow field can be optimized, improving reaction speed and product quality. The structure is easy to manufacture and has good industrial applicability.

Claims

1. A high-efficiency reactor, characterized by: include: a kettle body configured to contain the slurry; A guide tube is fixed to the top of the kettle body and extends downward, with a first guide port formed at the bottom of the guide tube and a second guide port formed on the upper side wall of the guide tube; A feed pipe, wherein there are multiple feed pipes, and at least some of the openings of the feed pipes are arranged in the guide cylinder; a stirring device, which is provided in the guide cylinder and passes through the first guide port of the guide cylinder to drive the slurry to move downward in the guide cylinder and to drive the slurry to move toward the periphery of the kettle at the bottom of the kettle; a baffle, arranged on the inner side wall of the kettle body and extending along the height direction of the kettle body; The solid-liquid separation device is arranged on the top of the kettle body and is located outside the guide cylinder to extract the clear liquid in the slurry in the kettle body.

2. The high-efficiency reactor according to claim 1, characterized in that: A shielding portion is formed on the guide cylinder at a position where the second guide port is not provided. At the same height of the kettle body, the position of the baffle corresponds to the position of the second guide port, and the position of the solid-liquid separation device corresponds to the position of the shielding portion.

3. The high-efficiency reactor according to claim 2, characterized in that: There are multiple second guide ports and shielding portions, and the second guide ports and shielding portions are arranged at intervals. There are multiple baffles, and the multiple baffles are sequentially arranged on the inner side wall of the kettle body along the circumference of the kettle body. The position of each baffle corresponds to the position of one second guide port, and the solid-liquid separation device is arranged between two baffles.

4. The high-efficiency reactor according to claim 3, characterized in that: The solid-liquid separation device is provided with multiple filter elements, and the distance between the filter element on the solid-liquid separation device farthest from the axis of the kettle body and the axis of the kettle body is greater than the distance between the side edge of the baffle away from the side wall of the kettle body and the axis of the kettle body.

5. The high-efficiency reactor according to claim 3 or 4, characterized in that: The height of the upper end of the baffle in the kettle body is higher than the height of the lower edge of the second guide port in the kettle body, and the height of the lower end of the filter element in the kettle body.

6. The high-efficiency reactor according to any one of claims 1 to 5, characterized in that: The stirring device includes a rotating shaft, a first stirring paddle and a second stirring paddle. The rotating shaft is inserted into the guide cylinder. The first stirring paddle and the second stirring paddle are sequentially arranged on the rotating shaft from top to bottom. In the height direction of the kettle body, the first stirring paddle is located in the guide cylinder and is lower than the lower edge of the second guide port, while the height of the second stirring paddle in the kettle body is lower than the height of the first guide port.

7. The high-efficiency reactor according to claim 6, characterized in that: The feed pipe includes a first feed pipe and a second feed pipe, the mouth of the first feed pipe corresponds to the position of the first stirring paddle and is lower than the height of the first stirring paddle in the synthesis reactor, and the mouth of the second feed pipe corresponds to the position of the second stirring paddle and is higher than the height of the second stirring paddle in the synthesis reactor.

8. The high-efficiency reactor according to claim 6 or 7, characterized in that: The height of the lower end of the baffle in the kettle body is lower than the height of the second stirring paddle in the kettle body.

9. The high-efficiency reactor according to any one of claims 6 to 8, characterized in that: The first stirring propeller is a four-pitch-blade stirring propeller, and the second stirring propeller is a six-liquid disc turbine propeller.

10. The high-efficiency reactor according to any one of claims 1 to 9, characterized in that: The solid-liquid separation device includes a filter element, a fixing frame and a connecting pipe. The solid-liquid separation device is fixed to the kettle body through the connecting frame. One end of the connecting pipe is connected to the filter element, and the other end extends out of the kettle body.

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