Built-in reaction kettle of solid-liquid separation device

Abstract

A reaction kettle with a built-in solid-liquid separation device comprises a kettle body, a guide cylinder, a stirring device and the solid-liquid separation device, the guide cylinder, the stirring device and the solid-liquid separation device are all arranged in the kettle body, the stirring device is sleeved with the guide cylinder, a first flow guide opening is formed in the bottom of the guide cylinder, and a second flow guide opening is formed in the bottom of the guide cylinder. An opening is formed in the side wall of the upper part of the guide cylinder, a second flow guide port is formed at the opening, a shielding part is formed at the non-opening part, the solid-liquid separation device is arranged at the top of the kettle body and extends downwards, and the solid-liquid separation device is arranged on the cross section in the direction perpendicular to the axis of the guide cylinder. And at least part of the solid-liquid separation device corresponds to the shielding part of the guide cylinder. According to the reaction kettle, the solid-liquid separation device can be directly arranged in the kettle body, meanwhile, the influence of the solid-liquid separation device on a flow field in the kettle body is reduced, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ternary precursor production, in particular to a solid-liquid separation device built-in reaction kettle. Background Art

[0002] In the ternary precursor production process, the synthesis process is the core process of the entire product production. In the prior art, when synthesizing the ternary precursor, each raw material is generally added to the reactor, and then the raw materials are dispersed in the slurry in the reactor in a timely manner through stirring, so that each raw material can fully react. In order to ensure the consistency of the environment in which the slurry is located during the production process and reduce the complexity of the equipment. The prior art will directly set a solid-liquid separation device in the reactor to directly extract the clear liquid in the reactor and filter and concentrate the slurry.

[0003] However, the main function of the reactor is to make the slurry react. During the reaction, a stirring device is required to stir the slurry to form an up-and-down circulation flow field in the reactor to drive the slurry to move. According to the current analysis of the flow field in the reactor, the flow field in the reactor is very complex. Setting a solid-liquid separation device directly in the reactor will have a very serious impact on the flow field in the reactor, which will have a significant impact on the K90 and particle size distribution of the ternary precursor. Utility Model Content

[0004] In view of this, the utility model provides a solid-liquid separation device built-in reactor, which can directly set the solid-liquid separation device in the reactor body, while reducing the impact of the solid-liquid separation device on the flow field in the reactor body, thereby improving product quality.

[0005] The utility model provides a solid-liquid separation device built-in reaction kettle, comprising a kettle body, a guide cylinder, a stirring device and a solid-liquid separation device, wherein the guide cylinder, the stirring device and the solid-liquid separation device are all arranged in the kettle body, the guide cylinder is sleeved outside the stirring device, a first guide port is formed at the bottom of the guide cylinder, an opening is formed on the side wall of the upper part of the guide cylinder, a second guide port is formed at the opening, and a shielding portion is formed at the non-opening part, the solid-liquid separation device is arranged at the top of the kettle body and extends downward, and in a cross section along the axial direction perpendicular to the guide cylinder, at least part of the solid-liquid separation device corresponds to the shielding portion of the guide cylinder.

[0006] Furthermore, there are a plurality of the second guide openings and the shielding portions, and the second guide openings and the shielding portions are arranged at intervals.

[0007] Furthermore, the built-in reactor of the solid-liquid separation device includes a plurality of guide plates, each of which is arranged on the inner wall of the reactor body and extends up and down in the vertical direction, and the plurality of guide plates are arranged in sequence on the inner wall of the reactor body along the circumferential direction.

[0008] Furthermore, a height of the lower end of the guide plate in the kettle body is lower than a height of the first guide port in the kettle body.

[0009] Further, in a cross section perpendicular to the axis of the guide tube, a line connecting the guide plate and the center of the guide tube passes through the second guide port.

[0010] Furthermore, a plurality of filter elements are arranged on the solid-liquid separation device, and the distance between the filter element on the solid-liquid separation device that is 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 guide plate away from the side wall of the kettle body and the axis of the kettle body.

[0011] Furthermore, viewed along the axial direction of the kettle body, the distance between the side edge of the guide plate away from the side wall of the kettle body and the axis of the kettle body is D / 5 to 3D / 50, where D is the diameter of the kettle body, and the distance between the filter element on the solid-liquid separation device that is farthest from the axis of the kettle body and the axis of the kettle body is greater than D / 4, where D is the diameter of the kettle body.

[0012] Furthermore, the height of the lower end of the filter element in the kettle body is lower than the height of the upper end of the guide plate in the kettle body, and the height of the lower edge of the second guide port in the kettle body.

[0013] Furthermore, the height of the highest point of the filter element is higher than the highest height of the guide plate.

[0014] Furthermore, the solid-liquid separation device comprises 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.

[0015] In summary, in the present invention, by setting the opening on the guide tube and limiting the position of the guide tube and the solid-liquid separation device 50, the solid-liquid separation device can be set in the area with weaker flow field in the kettle body, so that the reactor can directly set the solid-liquid separation device in the kettle body while reducing the influence of the solid-liquid separation device on the flow field in the kettle body, thereby improving the quality of the product.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of a built-in reactor of a solid-liquid separation device provided in an embodiment of the utility model.

[0018] Figure 2 The figure shows the positional relationship between the guide cylinder, the solid-liquid separation device and the guide plate along the axial direction of the kettle body.

[0019] Figure 3 Shown is a schematic diagram of the cross-sectional structure of the guide cylinder.

[0020] Figure 4 Shown is a schematic diagram of the axial structure of the fixed frame of the solid-liquid separation device.

[0021] Figure 5 Shown Figure 4 Schematic diagram of the structure of the middle fixing frame viewed from above.

[0022] Figure 6 Shown is a schematic diagram of the structure of the filter element of the solid-liquid separation device. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the following is a detailed description in conjunction with the accompanying drawings and preferred embodiments.

[0024] The utility model provides a solid-liquid separation device built-in reactor, which can directly arrange the solid-liquid separation device in the reactor body, reduce the influence of the solid-liquid separation device on the flow field in the reactor body, and improve the quality of the product.

[0025] Figure 1 The figure is a schematic diagram of the structure of a built-in reactor of a solid-liquid separation device provided in an embodiment of the utility model. Figure 2 The figure shows the positional relationship between the guide tube, the solid-liquid separation device and the guide plate along the axis of the kettle body. Figure 3 The figure shows the cross-sectional structure of the guide tube. Figures 1 to 3As shown, the solid-liquid separation device built-in reactor provided by the embodiment of the utility model includes a reactor body 10, a guide cylinder 20, a stirring device 30, a feed pipe 40 and a solid-liquid separation device 50. The guide cylinder 20, the stirring device 30 and the solid-liquid separation device 50 are all arranged in the reactor body 10. The guide cylinder 20 is sleeved outside the stirring device 30, so that a first area 11 located inside the guide cylinder 20 and a second area 12 located outside the guide cylinder 20 are formed in the reactor body 10. The opening of the feed pipe 40 is located in the guide cylinder 20. A first guide port 21 is formed at the bottom of the guide cylinder 20, and an opening is formed on the upper side wall of the guide cylinder 20 to form a second guide port 22 at the opening of the upper side wall of the guide cylinder 20 (see Figure 2 The unfilled area of ​​the middle guide tube 20 is formed with a shielding portion 23 (see Figure 2 The filling area of ​​the guide cylinder 20 in the guide cylinder 20 is shown in FIG. 1 . In other words, the upper side wall of the guide cylinder 20 is not completely open. The solid-liquid separation device 50 is arranged on the top of the kettle body 10 and extends downward. On a cross section perpendicular to the axis of the guide cylinder 20, at least part of the solid-liquid separation device 50 corresponds to the shielding portion 23 of the guide cylinder 20. That is, on the same cross section perpendicular to the axis of the kettle body 10, the line between the solid-liquid separation device 50 and the center of the guide cylinder 20 at least partially passes through the shielding portion 23.

[0026] In this embodiment, the guide cylinder 20 is provided, and a first guide port 21 and a second guide port 22 are formed on the guide cylinder 20. When the product is produced, the raw material can be fed into the slurry in the first area 11 of the kettle body 10 through the feed pipe 40; with the stirring of the stirring device 30, the slurry with new raw materials will move downward under the drive of the stirring device 30. Due to the existence of the guide cylinder 20, in the first area 11, the slurry cannot diffuse to the periphery of the kettle body 10, and can only move downward with the flow field; when the slurry flows out from the bottom of the guide cylinder 20 with the flow field, with the stirring of the stirring device 30, the slurry reaches the second area 12 and moves to the edge of the kettle body 10; when the slurry reaches the edge of the kettle body 10, it will continue to be affected by the flow field and move upward at the edge of the kettle body 10; when the slurry reaches the upper part of the kettle body 10, it will enter the inside of the guide cylinder 20 again through the second guide port 22 to form a complete flow field.

[0027] Since the upper part of the guide cylinder 20 is not completely open, there is a shielding portion 23. At this time, at the second guide port 22, the flow rate of the slurry will be faster, and at the shielding portion 23, the flow rate of the slurry will be slower. The position of the solid-liquid separation device 50 corresponds to the position of the shielding portion 23, that is, the solid-liquid separation device 50 is located in the area where the slurry flow rate is slower. This will make the setting of the solid-liquid separation device 50 have less impact on the flow field in the kettle body 10. The reactor can directly set the solid-liquid separation device 50 in the kettle body 10, while reducing the impact of the solid-liquid separation device 50 on the flow field in the kettle body 10, thereby improving the quality of the product.

[0028] Further, in this embodiment, both the second guide opening 22 and the shielding portion 23 can be multiple, and the second guide opening 22 and the shielding portion 23 are arranged at intervals. 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. In this embodiment, there is one solid-liquid separation device 50, and in other embodiments, there can be multiple solid-liquid separation devices 50, and at least part of the structure of each solid-liquid separation device 50 corresponds to one shielding portion 23.

[0029] Please continue to refer to Figure 1 The reactor further includes a plurality of guide plates 60, each of which is disposed on the inner side wall of the reactor body 10 and extends vertically up and down, and the plurality of guide plates 60 are sequentially disposed on the inner side wall of the reactor body 10 along the circumferential direction. In a cross section perpendicular to the axis of the guide cylinder 20, a line connecting the guide plate 60 and the center of the guide cylinder 20 passes through the second guide port 22. That is, from the direction along the axis of the guide cylinder 20, the guide plate 60 corresponds to the position of the second guide port 22 of the guide cylinder 20. The above-mentioned solid-liquid separation device 50 is disposed between the two guide plates 60.

[0030] In this embodiment, by disposing the guide plate 60 , the slurry moving from bottom to top in the second area 12 of the kettle body 10 can be guided to optimize the flow field in the kettle body 10 .

[0031] Please continue to refer to Figure 2 In this embodiment, a plurality of filter elements 51 are provided on the solid-liquid separation device 50. The distance between the filter element 51 farthest from the axis of the kettle body 10 on the solid-liquid separation device 50 and the axis of the kettle body 10 (e.g. Figure 2 As shown in a, Figure 2 The circle in the figure only represents the actual distribution range of the filter element), which is greater than the distance between the side of the guide plate 60 away from the side wall of the kettle body 10 and the axis of the kettle body 10 (such as Figure 2 That is, at least part of the solid-liquid separation device 50 is disposed in the flow field optimized by the guide plate 60 to minimize the impact on the flow field in the kettle body 10.

[0032] More specifically, Figure 2 As shown, viewed along the axis direction of the kettle body 10, the distance between the side edge of the guide plate 60 away from the side wall of the kettle body 10 and 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 element 51 on the solid-liquid separation device 50 that is farthest from the axis of the kettle body 10 and the axis of the kettle body 10 is greater than D / 4, where D is the diameter of the kettle body 10.

[0033] Please continue to refer to Figure 1 In this embodiment, the height of the lower end of the guide plate 60 in the kettle body 10 is lower than the height of the first guide port 21 in the kettle body 10, so that the guide plate 60 can better guide the flow.

[0034] The height of the lower end of the filter element 51 in the kettle body 10 is lower than the height of the upper end of the guide plate 60 in the kettle body 10, and the height of the lower edge of the second guide port 22 in the kettle body 10. Due to the arrangement of the guide cylinder 20, the area with a faster flow rate of the slurry is located at the first guide port 21 and the second guide port 22. Through the above arrangement, the lowest point of the filter element 51 can be roughly located in the middle of the guide plate 60, which can make the filter element 51 located in a weaker flow field, further reducing the influence of the solid-liquid separation device 50 on the flow field.

[0035] Furthermore, in this embodiment, the sum of the areas of all the 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, accelerate the material running speed, shorten the synthesis time, and effectively ensure the product particle size distribution.

[0036] Further, 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 circumferential direction of the kettle body 10 .

[0037] Please continue to refer to Figure 1 and Figure 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 23 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).

[0038] An outward flange 24 is formed at the bottom edge of the guide cylinder 20 to guide the flow of the slurry and reduce the interference with the flow field.

[0039] Figure 4 The figure shows the axial structural diagram of the fixed frame of the solid-liquid separation device. Figure 5 Shown Figure 4 Schematic diagram of the structure of the middle fixed frame from above. Figure 6The figure shows the structure of the filter element of the solid-liquid separation device. Figure 1 , Figures 4 to 6 As shown, the solid-liquid separation device 50 also includes a fixing frame 52 and a connecting pipe 53. The solid-liquid separation device 50 is fixed to the kettle body 10 through the fixing frame 52. One end of the connecting pipe 53 is connected to the filter element 51, and the other end extends out of the kettle body 10 to be connected to the pump body 70. Through the arrangement of the connecting pipe 53, the height of the filter element 51 extending into the kettle body 10 can be easily adjusted. When performing solid-liquid separation, the liquid surface can completely immerse the filter element 51 to prevent empty suction.

[0040] Furthermore, the height of the end of the filter element 51 facing the connecting pipe 53 in the kettle body 10, that is, the height of the highest point of the filter element 51, is higher than the highest height of the guide plate 60. In other words, the highest position of the guide plate 60 is located in the middle of the filter element 51. The above-mentioned position setting can reduce the influence of the guide plate 60 on the flow field of the slurry in the kettle body 10 at the upper part of the kettle body 10. At the same time, it can also meet the installation height requirement of the filter element 51 in the kettle body 10.

[0041] The connecting pipe 53 extends in a vertical direction and has a threaded opening 531 for connection at one end away from the fixing frame 52. The filter element 51 has a first connecting portion 511 formed on one end facing the second connecting pipe 53. The filter element 51 is threadedly engaged with the connecting pipe 53 through the first connecting portion 511 and is fixed to the connecting pipe 53 in a vertical direction.

[0042] The filter element 51 can be alloy sintered felt or non-metal sintered felt.

[0043] In this embodiment, the diameter of each filter element 51 is 10-160 mm, preferably 10-50 mm. Figure 5 c) in the figure is 1 / 6d-d, where d is the diameter of the filter element 51.

[0044] By limiting the length and diameter of the filter element 51 , during solid-liquid separation, the liquid in the slurry can be efficiently sucked out, while solids can be prevented from being clogged between the two filter elements 51 and reducing the filtering performance of the filter element 51 .

[0045] A second connection portion 512 is formed on one end of the filter element 51 away from the fixing frame 52. The solid-liquid separation device 50 further includes a fixing plate 54. The filter element 51 is connected to the fixing plate 54 via the second connection portion 512. The fixing plate 54 is fixed to the kettle body 10. The above arrangement can prevent the filter element 51 from shaking under the action of the flow field in the kettle body 10, thereby reducing the filtering effect.

[0046] For further information, please refer to Figure 4A plurality of buckle parts 521 are formed on the fixing frame 52 , and a plurality of clips (not shown) are formed on the kettle body 10 . The buckle parts 521 are combined with the clips on the reaction kettle to fix the fixing frame 52 .

[0047] In summary, in the present invention, by setting the opening on the guide cylinder 20 and limiting the position of the guide cylinder 20 and the solid-liquid separation device 50, the solid-liquid separation device 50 can be set in an area where the flow field in the kettle body 10 is relatively weak, so that the reactor can directly set the solid-liquid separation device 50 in the kettle body 10 while reducing the influence of the solid-liquid separation device 50 on the flow field in the kettle body 10, thereby improving the quality of the product.

[0048] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A solid-liquid separation device built-in reactor, characterized in that: The invention comprises a kettle body, a guide cylinder, a stirring device and a solid-liquid separation device, wherein the guide cylinder, the stirring device and the solid-liquid separation device are all arranged in the kettle body, the guide cylinder is sleeved outside the stirring device, a first guide port is formed at the bottom of the guide cylinder, an opening is formed on the side wall of the upper part of the guide cylinder, a second guide port is formed at the opening, and a shielding portion is formed at the non-opening part, the solid-liquid separation device is arranged on the top of the kettle body and extends downward, and in a cross section along the axial direction perpendicular to the guide cylinder, at least part of the solid-liquid separation device corresponds to the shielding portion of the guide cylinder.

2. The solid-liquid separation device built-in reactor according to claim 1, characterized in that: There are multiple second air guide ports and multiple shielding portions, and the second air guide ports and the shielding portions are arranged at intervals.

3. The solid-liquid separation device built-in reactor according to claim 1, characterized in that: The solid-liquid separation device built-in reactor includes a plurality of guide plates, each of which is arranged on the inner side wall of the reactor body and extends up and down in the vertical direction. The plurality of guide plates are sequentially arranged on the inner side wall of the reactor body along the circumferential direction.

4. The solid-liquid separation device built-in reactor according to claim 3, characterized in that: The height of the lower end of the guide plate in the kettle body is lower than the height of the first guide port in the kettle body.

5. The solid-liquid separation device built-in reactor according to claim 3, characterized in that: On a cross section perpendicular to the axis of the guide tube, a line connecting the guide plate and the center of the guide tube passes through the second guide port.

6. The solid-liquid separation device built-in reactor according to claim 3, characterized in that: A plurality of filter elements are arranged on the solid-liquid separation device, and the distance between the filter element on the solid-liquid separation device that is 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 guide plate away from the side wall of the kettle body and the axis of the kettle body.

7. The solid-liquid separation device built-in reactor according to claim 6, characterized in that: Viewed along the axis direction of the kettle body, the distance between the side edge of the guide plate away from the side wall of the kettle body and the axis of the kettle body is D / 5 to 3D / 50, where D is the diameter of the kettle body, and the distance between the filter element on the solid-liquid separation device that is farthest from the axis of the kettle body and the axis of the kettle body is greater than D / 4, where D is the diameter of the kettle body.

8. The solid-liquid separation device built-in reactor according to claim 6, characterized in that: The height of the lower end of the filter element in the kettle body is lower than the height of the upper end of the guide plate in the kettle body, and the height of the lower edge of the second guide port in the kettle body.

9. The solid-liquid separation device built-in reactor according to claim 6, characterized in that: The height of the highest point of the filter element is higher than the highest height of the guide plate.

10. The solid-liquid separation device built-in reactor according to claim 1, characterized in that: The solid-liquid separation device comprises a filter element, a fixing frame and a connecting pipe. The solid-liquid separation device is fixed to the kettle body through the fixing 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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