High-efficiency reaction vessel

Abstract

This disclosure provides a highly efficient reaction vessel and relates to a technology for the production of ternary precursors. The highly efficient reaction vessel includes a vessel body for containing a slurry; a guide cylinder fixed to the top of the vessel body and extending downward, with a first flow port formed at the bottom of the guide cylinder and a second flow port formed on the upper side wall of the guide cylinder; a plurality of feed pipes, the openings of which at least a portion of the feed pipes are installed inside the guide cylinder; an agitator drilled inside the guide cylinder and exiting from the first flow port of the guide cylinder, which drives the slurry to move downward within the guide cylinder and drives the slurry to move around the vessel body at the bottom of the vessel body; a baffle installed on the inner wall of the vessel body and extending in the height direction of the vessel body; and a solid-liquid separator installed at the top of the vessel body and located outside the guide cylinder, which draws clear liquid from the slurry out of the vessel body. This reaction vessel can improve productivity and improve product quality.

Description

Technical Field

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[0001] Cross - reference to Related Applications This disclosure claims the priority of Chinese Patent Application No. 202410182135.8, titled "High - efficiency Reaction Kettle", filed on February 18, 2024, and all the contents of the Chinese patent application are incorporated herein by reference.

[0002] Technical Field This disclosure relates to the technical field of the production of ternary precursors, particularly to a high - efficiency reaction kettle.

Background Art

[0003] In the production process of ternary precursors, the synthesis process is the core process of the overall product production. In the prior art, when synthesizing ternary precursors, generally, each raw material is added into the reaction kettle, and then, by stirring, each raw material is timely dispersed into the slurry in the reaction kettle so as to fully react each raw material.

[0004] When carrying out the reaction, it is necessary to stir the slurry by the stirring device in the reaction kettle. Thereby, the slurry forms a flow field in the reaction kettle. Ideally, this flow field rapidly moves downward at the central part of the reaction kettle so as to mix each raw material, and then, this flow field moves from the bottom of the reaction kettle to the edge of the reaction kettle so that each raw material can fully react. After reaching the edge, it moves relatively slowly upward, and finally moves back to the central part of the reaction kettle in the upper region of the reaction kettle to perform recirculation.

[0005] However, the above - mentioned reaction process is relatively slow and the productivity is relatively low.

Summary of the Invention

[0006] In view of this, this disclosure provides a high - efficiency reaction kettle. This reaction kettle can improve productivity and the quality of products.

[0007] This disclosure is A vessel body arranged to contain the slurry, The guide cylinder is fixed to the top of the kettle body, extends downward, has a first flow guide opening formed at the bottom of the guide cylinder, and has a second flow guide opening formed on the upper side wall of the guide cylinder, A plurality of feed pipes, each having at least a portion of its opening installed within the guide tube, A stirring device is provided, which is drilled inside the guide cylinder and exits from the first guide port of the guide cylinder, to drive the slurry downward within the guide cylinder and to drive the slurry at the bottom of the kettle body to move around the periphery of the kettle body. A baffle is installed on the inner wall of the furnace body and extends in the height direction of the furnace body, A solid-liquid separation device is installed at the top of the vessel and located outside the guide cylinder to draw the clear liquid from the slurry out of the vessel. We provide a highly efficient reaction vessel that includes [a specific component / feature].

[0008] Furthermore, a blocking portion is formed in the guide cylinder at a position where the second flow guide port is not installed, and at the same height as the kettle body, the position of the baffle corresponds to the position of the second flow guide port, and the position of the solid-liquid separation device corresponds to the position of the blocking portion.

[0009] Furthermore, both the second flow port and the blocking portion are multiple, the second flow port and the blocking portion are installed with a gap between them, there are multiple baffles, the multiple baffles are installed sequentially on the inner wall of the kettle in the circumferential direction of the kettle, each baffle's position corresponds to the position of one of the second flow ports, and the solid-liquid separation device is installed between two of the baffles.

[0010] Furthermore, the solid-liquid separation apparatus is equipped with multiple filter cartridges, and the distance from the filter cartridge furthest from the axis of the kettle body to the axis of the kettle body is greater than the distance from one side edge of the baffle furthest from the side wall of the kettle body to the axis of the kettle body.

[0011] Furthermore, the height of the upper end of the baffle within the casing is higher than the height of the lower edge of the second outlet within the casing and the height of the lower end of the filter cartridge within the casing.

[0012] Furthermore, the stirring device includes a rotating shaft, a first impeller, and a second impeller, wherein the rotating shaft is drilled in the guide cylinder, the first impeller and the second impeller are installed on the rotating shaft in order from top to bottom, the first impeller is located in the guide cylinder in the direction of the height of the kettle body and is lower than the lower edge of the second outlet, and the height of the second impeller within the kettle body is lower than the height of the first outlet.

[0013] Furthermore, the feed pipe includes a first feed pipe and a second feed pipe, wherein the opening of the first feed pipe corresponds to the position of the first impeller and is lower than the height of the first impeller in the synthesis kettle, and the opening of the second feed pipe corresponds to the position of the second impeller and is higher than the height of the second impeller in the synthesis kettle.

[0014] Furthermore, the first impeller is a 4-pitch blade impeller, and the second impeller is a 6-blade disk turbine.

[0015] Furthermore, the highest point of the filter cartridge is higher than the highest point of the baffle.

[0016] Furthermore, the solid-liquid separation device includes a filter cartridge, a fixed frame, and a connecting pipe, the solid-liquid separation device being fixed to the kettle body by the fixed frame, one end of the connecting pipe being connected to the filter cartridge, and the other end protruding outside the kettle body.

[0017] To sum up, in the present disclosure, by installing the guide cylinder, stirring device, baffle, and solid-liquid separation device, the productivity can be improved and the quality of the product can be improved. Furthermore, by limiting the positions of the respective structures, the flow field can be better optimized, and the reaction rate and the quality of the product can be improved.

[0018] The above description is only a brief introduction to the technical solution of the present disclosure. To make the technical means of the present disclosure clearer, implementable according to the content of the specification, and to more clearly understand the above and other objects, features, and advantages of the present disclosure, the following provides preferred embodiments and, with reference to the accompanying drawings, will be described in detail as follows.

Brief Description of the Drawings

[0019] [Figure 1] It is a schematic diagram of the structure of a high-efficiency reaction kettle provided by an embodiment of the present disclosure. [Figure 2] It is a schematic diagram of the positional relationship between the guide cylinder, solid-liquid separation device, and baffle viewed in the axial direction of the kettle body. [Figure 3] It is a schematic diagram of the cross-sectional structure of the guide cylinder. [Figure 4] It is a schematic diagram of the axial-side structure of the fixed frame of the solid-liquid separation device. [Figure 5] It is a schematic diagram of the structure of the bottom view of the fixed frame in FIG. 4. [Figure 6] It is a schematic diagram of the structure of the filter cartridge of the solid-liquid separation device.

Modes for Carrying Out the Invention

[0020] To further explain the technical means and effects adopted by the present disclosure to achieve the intended invention purpose, the following will be described in detail as follows by using the following accompanying drawings and preferred embodiments.

[0021] The present disclosure provides a high-efficiency reaction kettle, which can improve productivity and the quality of the product.

[0022] FIG. 1 is a schematic diagram of the structure of a high-efficiency reaction kettle provided by an embodiment of the present disclosure. FIG. 2 is a schematic diagram of the positional relationship among a guide cylinder, a solid-liquid separation device, and a baffle as viewed in the axial direction of the kettle body. FIG. 3 is a schematic diagram of the cross-sectional structure of the guide cylinder. As shown in FIGS. 1 to 3, the high-efficiency reaction kettle provided by the present disclosure includes a kettle body 10, a guide cylinder 20, a stirring device 30, a feed pipe 40, a baffle 50, and a solid-liquid separation device 60. The kettle body 10 is arranged to accommodate the slurry. The guide cylinder 20 is fixed to the top of the kettle body 10 and extends downward. An opening is formed in the bottom and upper side walls of the guide cylinder 20 such that a first diversion port 21 is formed at the bottom of the guide cylinder 20 and a second diversion port 22 is formed in the upper side wall of the guide cylinder 20. There are a plurality of feed pipes 40, and the openings of at least a part of the feed pipes 40 are installed inside the guide cylinder 20. The stirring device 30 is bored inside the guide cylinder 20 and exits from the first diversion port 21 of the guide cylinder 20. That is, the height of the end of the stirring device 30 away from the top of the kettle body 10 is lower than the height where the first diversion port 21 is located. Thereby, the slurry is driven to move downward inside the guide cylinder 20 and is driven to move around the kettle body 10 at the bottom of the kettle body 10. The baffle 50 is installed on the inner side wall of the kettle body 10 and extends in the height direction of the kettle body 10. The solid-liquid separation device 60 is installed at the top of the kettle body 10 and is located outside the guide cylinder 20 so as to draw out the clear liquid in the slurry inside the kettle body 10.

[0023] In this embodiment, when producing a ternary precursor, first, the raw material is sent by the feed pipe 40 into the slurry in the area covered by the guide cylinder 20 of the kettle body 10. Then, the stirring device 30 drives the slurry, in which the raw material has been mixed in the guide cylinder 20, downward, and drives the slurry, in which the raw material has been mixed at the bottom of the kettle body 10, toward the periphery of the kettle body 10. The presence of the guide cylinder 20 guides the downward movement of the slurry within the area covered by the guide cylinder 20 and prevents the slurry from moving toward the periphery. After the slurry flows out from the first outlet 21, the stirring device 30 moves the slurry toward the periphery of the kettle body 10. After the slurry reaches the area of ​​the side wall of the kettle body 10, the presence of the baffle guides the movement of the slurry again toward the top of the kettle body 10. At the top of the kettle body 10, the slurry enters the inside of the guide cylinder 20 again from the second outlet 22, thereby forming a single circulating flow field. Throughout the entire circulation, the raw materials can be uniformly mixed with the existing slurry, allowing for a faster reaction. Within the vessel body 10, the circulation flow field is guided by the guide cylinder 20, the agitator 30, and the baffles, so the entire circulation path of the flow field is relatively clear, resulting in relatively little turbulence and facilitating the reaction. Furthermore, the presence of the solid-liquid separator 60 allows for the filtration of the slurry inside the vessel body 10, absorbing a clear liquid and eliminating the need to transfer the slurry to a separate concentration vessel, thereby improving productivity and ensuring consistency in the reaction environment. Therefore, this reaction vessel can improve productivity and product quality.

[0024] Furthermore, a blocking section 23 is formed at the upper part of the guide cylinder 20 where the second flow port 22 is not installed, and at the same height of the kettle body 10, the position of the baffle 50 corresponds to the position of the second flow port 22, and the position of the solid-liquid separator 60 corresponds to the position of the blocking section 23. That is, in the same cross-section perpendicular to the axis of the kettle body 10, the connecting line between at least one baffle 50 and the axis of the kettle body 10 passes through the second flow port 22. The connecting line between at least a portion of the solid-liquid separator 60 and the axis of the kettle body 10 passes through the blocking section 23.

[0025] With the above installation, the baffle 50 better guides the slurry flow field that enters the guide cylinder 20 again from the second flow port 22, allowing the solid-liquid separator 60 to be installed in a relatively weak area of ​​the flow field, and eliminating or reducing the influence on the flow field inside the kettle body 10 when the solid-liquid separator 60 is installed inside the kettle body 10.

[0026] Furthermore, in this embodiment, both the second flow outlet 22 and the blocking section 23 may be multiple, and both the second flow outlet 22 and the blocking section 23 are installed with a gap between them. That is, a blocking section 23 is formed between two second flow outlets 22, and a second flow outlet 22 is formed between two blocking sections 23.

[0027] Correspondingly, there are multiple baffles 50, which are installed sequentially along the circumferential direction of the kettle body 10 on the inner wall of the kettle body 10. Each baffle 50 corresponds to the position of one second outlet 22. The solid-liquid separation device 60 is installed between two adjacent baffles 50.

[0028] Continuing with Figure 2, in this embodiment, the solid-liquid separator 60 is equipped with multiple filter cartridges 61. The distance from the filter cartridge 61 furthest from the axis of the kettle body 10 to the axis of the kettle body 10 (as shown in Figure 2a, where the ring in Figure 2 shows only the actual distribution range of the filter cartridges 61) is greater than the distance from one side edge of the baffle 50 away from the side wall of the kettle body 10 to the axis of the kettle body 10 (shown in Figure 2b). In other words, at least a portion of the solid-liquid separator 60 is installed in a flow field optimized by the baffle 50 in order to minimize its influence on the flow field within the kettle body 10.

[0029] More specifically, as shown in Figure 2, when viewed along the axial direction of the kettle body 10, the distance from one side edge of the baffle 50 away from the side wall of the kettle body 10 to the axis of the kettle body 10 is D / 5 to 3D / 50, where D is the diameter of the kettle body 10. The distance between the center of the filter cartridge 61, which is furthest from the axis of the kettle body 10 in the solid-liquid separation device 60, and the axis of the kettle body 10 is greater than D / 4, where D is the diameter of the kettle body 10.

[0030] Continuing with Figure 1, in this embodiment, the height of the upper end of the baffle 50 within the casing 10 is higher than the height of the lower edge of the second outlet 22 within the casing 10. The height of the lower end of the filter cartridge 61 within the casing 10 is lower than the height of the upper end of the baffle 50 within the casing 10 and the height of the lower edge of the second outlet 22 within the casing 10. By installing the guide cylinder 20, the region with a relatively high slurry flow velocity is located at the first outlet 21 and the second outlet 22. With the above installation, the lowest point of the filter cartridge 61 can be positioned approximately in the center of the baffle 50, thereby positioning the filter cartridge 61 in a relatively weak flow field and further reducing the influence of the solid-liquid separation device 60 on the flow field.

[0031] Furthermore, in this embodiment, the sum of the areas of all the second guide ports 22 is 1 to 1.5 times the area of ​​the cross-section perpendicular to the axis of the guide cylinder 20. With the above setup, the flow field can enter the guide cylinder 20 rapidly and efficiently, increasing the material's movement speed, shortening the synthesis time, and effectively ensuring the particle size distribution of the product.

[0032] Furthermore, for a single second outlet 22, the height of the second outlet 22 is 0.7 to 1.1 times the width of the second outlet 22 along the circumferential direction of the kettle body 10.

[0033] Continuing with reference to Figures 1 and 3, in this embodiment, a first heat-insulating cover (not shown) is installed inside the side wall of the kettle body 10, a second heat-insulating cover 24 is installed inside the side wall of the guide cylinder 20, and a communication opening (not shown) is provided at the connection point between the guide cylinder 20 and the top of the kettle body 10 for the heat-insulating liquid to flow in.

[0034] An outward-facing flange 25 is formed on the bottom edge of the guide cylinder 20 to guide the slurry flow and reduce interference with the flow field.

[0035] Figure 4 is a schematic diagram of the axial structure of the fixed frame of the solid-liquid separator, Figure 5 is a schematic diagram of the bottom view structure of the fixed frame in Figure 4, and Figure 6 is a schematic diagram of the structure of the filter cartridge of the solid-liquid separator. As shown in Figures 1, 4 to 6, the solid-liquid separator 60 further includes a fixed frame 62 and a connecting pipe 63. The solid-liquid separator 60 is fixed to the casing 10 by the fixed frame 62, one end of the connecting pipe 63 is connected to the filter cartridge 61, and the other end protrudes outside the casing 10 and is connected to the pump body 70. The installation of the connecting pipe 63 allows for easy adjustment of the height at which the filter cartridge 61 enters the casing 10, so that when performing solid-liquid separation, the filter cartridge 61 can be completely submerged in the liquid and air can be sucked in.

[0036] Furthermore, the height of one end of the filter cartridge 61 facing the connecting pipe 63 within the vessel body 10, i.e., the height of the highest point of the filter cartridge 61, is higher than the highest point of the baffle 50. In other words, the highest position of the baffle 50 is located in the center of the filter cartridge 61. This position reduces the influence of the baffle 50 on the slurry flow field within the vessel body 10 at the top of the vessel body 10. At the same time, it satisfies the height requirements for mounting the filter cartridge 61 within the vessel body 10.

[0037] The connecting pipe 63 extends vertically and has a threaded opening 631 at one end away from the fixed frame 62 for connection, and a first connecting portion 611 is formed at one end of the filter cartridge 61 facing the second connecting pipe 63. The filter cartridge 61 is screwed into the connecting pipe 63 by the first connecting portion and fixed to the connecting pipe 63 in the vertical direction.

[0038] This filter cartridge 61 may be made of alloy sintered felt or non-metallic sintered felt.

[0039] In this embodiment, the diameter of each filter cartridge 61 is 10 to 160 mm, preferably 10 to 50 mm. The gap between the two filter cartridges 61 (i.e., c in Figure 5) is 1 / 6D to D, where D is the diameter of the filter cartridge 61.

[0040] By limiting the length and diameter of the filter cartridge 61, when performing solid-liquid separation, the liquid in the slurry can be efficiently drawn out, and the solid can be prevented from blocking the space between the two filter cartridges 61, thereby preventing a reduction in the filtration performance of the filter cartridge 6151.

[0041] A second connecting portion 612 is formed at one end of the filter cartridge 61 that is separated from the fixed frame 62. The solid-liquid separation device 60 further includes a fixed plate 64, and the filter cartridge 61 is connected to the fixed plate 64 by the second connecting portion 612, so that the fixed plate and the kettle body 10 are fixed to each other. This installation prevents the filter cartridge 61 from shaking due to the flow field inside the kettle body 10, which would reduce the filtration effect.

[0042] Furthermore, referring to Figure 4, a plurality of female connectors 621 are formed on the fixed frame 62, and a plurality of male connectors (not shown) are formed on the vessel body 10, and the female connectors 621 and the male connectors of the reaction vessel are connected in such a way that the fixed frame 62 is fixed.

[0043] Continuing with reference to Figure 1, in this embodiment, the stirring device 30 includes a rotating shaft 31, a first impeller 32, and a second impeller 33. The rotating shaft 31 is drilled inside the guide cylinder 20, and the first impeller 32 and the second impeller 33 are installed on the rotating shaft 31 in order from top to bottom. In the height direction of the kettle body 10, the first impeller 32 is located inside the guide cylinder 20 and is lower than the lower edge of the second outlet 22, but the height of the second impeller 33 inside the kettle body 10 is lower than the height of the first outlet 21, that is, the second impeller 33 is located outside the guide cylinder 20.

[0044] With the above setup, the first impeller 32 can be driven to move the slurry downward within the guide cylinder 20, and the second impeller 33 can be driven at the bottom of the kettle body 10 to move the slurry around the kettle body 10.

[0045] 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 impeller 32 and is lower than the height of the first impeller 32 within the synthesis kettle. The opening of the second feed pipe 42 corresponds to the position of the second impeller 33 and is higher than the height of the second impeller 33 within the synthesis kettle.

[0046] By limiting the positions of the feed pipe and impeller, the impeller can mix the raw materials more effectively, and the aggregation of the raw materials can be prevented.

[0047] Furthermore, in this embodiment, in order to better guide the slurry, the height of the lower end of the baffle 50 within the kettle body 10 is lower than the height of the second impeller 33 within the kettle body 10.

[0048] In this embodiment, the first impeller 32 may be a 4-pitch blade impeller, and the second impeller 33 may be a 6-disk turbine.

[0049] In a direction perpendicular to the axis of the rotation shaft 31, the distance from the opening of the first feed pipe to the edge of the first impeller 32, and the distance from the opening of the second feed pipe to the edge of the second impeller 33 are both D / 120 to D / 12, where D is the diameter of the composite kettle.

[0050] Furthermore, the first and second feed pipes may be fixed to the inner wall of the guide cylinder 2 by links to prevent them from swaying.

[0051] In summary, the present disclosure allows for improved productivity and product quality through the installation of the guide cylinder 20, agitator 30, baffle 50, and solid-liquid separator 60. Furthermore, by limiting the position of each structure, the flow field can be better optimized, thereby improving reaction rate and product quality.

[0052] The foregoing description is merely a preferred embodiment of the present disclosure and does not constitute any limitation of the present disclosure. Although the present invention has been disclosed in preferred embodiments, the foregoing description is not limiting to the present disclosure. Those skilled in the art should be able to use the technical content of the foregoing disclosure to create equivalent embodiments in which minor modifications or alterations are equivalent changes, without departing from the scope of the present invention. All simple corrections, equivalent changes, and alterations to the foregoing embodiments, based on the essence of the present invention and without departing from the scope of the present invention, fall within the scope of the present invention. [Industrial applicability]

[0053] This disclosure describes how productivity can be improved and product quality can be enhanced by installing a guide cylinder, a stirring device, baffles, and a solid-liquid separator. By limiting the position of each structure, the flow field can be better optimized, improving reaction rate and product quality. The structure of the present invention is easy to manufacture and has relatively good industrial applicability.

Claims

1. A vessel body arranged to contain the slurry, The guide cylinder is fixed to the top of the cauldron body, extends downward, has a first flow guide opening formed at the bottom of the guide cylinder, and has a second flow guide opening formed on the upper side wall of the guide cylinder, A plurality of feed pipes, each having at least a portion of its opening installed within the guide tube, A stirring device is provided, which is drilled inside the guide cylinder and exits from the first guide port of the guide cylinder, to drive the slurry downward within the guide cylinder and to drive the slurry at the bottom of the kettle body to move around the periphery of the kettle body. A baffle is installed on the inner wall of the furnace body and extends in the height direction of the furnace body, A solid-liquid separation device is installed at the top of the vessel and located outside the guide cylinder to draw the clear liquid from the slurry out of the vessel. A highly efficient reaction vessel characterized by containing [a specific element].

2. The highly efficient reaction vessel according to claim 1, characterized in that a blocking portion is formed in the guide cylinder at a position where the second flow guide port is not installed, and at the same height of the vessel body, the position of the baffle corresponds to the position of the second flow guide port, and the position of the solid-liquid separation device corresponds to the position of the blocking portion.

3. The high-efficiency reaction vessel according to claim 2, characterized in that both the second flow inlet and the blocking portion are multiple, the second flow inlet and the blocking portion are installed with an interval between them, the baffles are multiple, the multiple baffles are installed sequentially on the inner wall of the vessel in the circumferential direction, the position of each baffle corresponds to the position of one of the second flow inlets, and the solid-liquid separation device is installed between two of the baffles.

4. The high-efficiency reaction vessel according to claim 3, wherein a plurality of filter cartridges are installed in the solid-liquid separation apparatus, and the distance from the filter cartridge furthest from the axis of the vessel body of the solid-liquid separation apparatus to the axis of the vessel body is greater than the distance from one side edge of the baffle away from the side wall of the vessel body to the axis of the vessel body.

5. The high-efficiency reaction vessel according to claim 3 or 4, characterized in that the height of the upper end of the baffle within the vessel body is higher than the height of the lower edge of the second flow outlet within the vessel body and the height of the lower end of the filter cartridge within the vessel body.

6. The stirring device includes a rotating shaft, a first impeller and a second impeller, wherein the rotating shaft is drilled in the guide cylinder, the first impeller and the second impeller are installed on the rotating shaft in order from top to bottom, and in the height direction of the kettle body, the first impeller is located in the guide cylinder and is lower than the lower edge of the second outlet, and the height of the second impeller within the kettle body is lower than the height of the first outlet, as described in any one of claims 1 to 5.

7. The high-efficiency reaction vessel according to claim 6, wherein the feed pipe includes a first feed pipe and a second feed pipe, the opening of the first feed pipe corresponds to the position of the first impeller and is lower than the height of the first impeller in the synthesis vessel, and the opening of the second feed pipe corresponds to the position of the second impeller and is higher than the height of the second impeller in the synthesis vessel.

8. The high-efficiency reaction vessel according to claim 6 or 7, characterized in that the height of the lower end of the baffle within the vessel body is lower than the height of the second impeller within the vessel body.

9. The highly efficient reaction vessel according to any one of 6 to 8, characterized in that the first impeller is a four-pitch blade impeller and the second impeller is a six-disk turbine.

10. The high-efficiency reaction vessel according to any one of claims 1 to 9, wherein the solid-liquid separation apparatus includes a filter cartridge, a fixed frame, and a connecting pipe, the solid-liquid separation apparatus is fixed to the vessel body by the fixed frame, one end of the connecting pipe is connected to the filter cartridge, and the other end protrudes outside the vessel body.

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