Reaction kettle for optimizing internal flow field
By designing an optimized reactor in the ternary precursor production process, using the combination of a guide cylinder, a flow stop plate and multiple feed pipes to form a consistent flow field, solving the problem of flow field disorder in the prior art and improving the problem of flow field disorder. Reaction efficiency and product yield.
Patent Information
- Application Number
- CN202420298060.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-18
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-02-18
AI Technical Summary
In the existing ternary precursor production process, the flow field in the reactor is disordered, making it difficult to mix the raw materials evenly and the product yield is low.
A reactor is designed to optimize the internal flow field, and a uniform flow field is formed by providing a guide cylinder, a flow stop plate and a plurality of feed pipes in the body of the kettle, and a specific stirring device, including the first and first of the guide cylinders. The two flow guides, multiple flow stops, multiple pipe opening positions of the feed pipe, and the setting of the stirring blade ensures the circulation and mixing efficiency of the flow field.
A relatively consistent flow field is formed inside the kettle body, which improves the reaction efficiency and product yield, and ensures full mixing and reaction of raw materials.
Smart Images
Figure CN222267118U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ternary precursor production, in particular to a reaction kettle with optimized internal flow field. 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 into a reactor, and then stirred to disperse each raw material in the slurry in the reactor in time so that each raw material can react fully.
[0003] When the reaction is carried out, 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 evenly 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 mixed raw materials to react fully; finally, it moves back to the middle of the reactor in the upper area of the reactor to re-circulate.
[0004] However, in the existing reactor, the flow field during the reaction is relatively chaotic and difficult to control, the raw materials cannot react well, and the product yield is low. Utility Model Content
[0005] In view of this, the utility model provides a reaction kettle with optimized internal flow field, which can form a relatively consistent flow field inside the kettle body during reaction, thereby improving reaction efficiency.
[0006] The utility model provides a reaction kettle with optimized internal flow field, which is characterized by comprising:
[0007] Kettle body;
[0008] A guide tube is arranged in the kettle body, a first guide port is formed at the bottom of the guide tube, and a second guide port is opened on the side wall of the upper part of the guide tube;
[0009] A feed pipe, at least a portion of the feed pipe opening is disposed in the guide cylinder;
[0010] A stirring device, comprising a rotating shaft, and a first stirring blade and a second stirring blade arranged on the rotating shaft, wherein the rotating shaft is arranged in the guide cylinder and passes through the bottom of the guide cylinder, the first stirring blade is arranged in the guide cylinder, and the second stirring blade is arranged at the bottom of the kettle body and is located outside the guide cylinder;
[0011] A baffle is vertically arranged on the side wall of the kettle body, wherein the height of the lower end of the baffle in the kettle body is lower than the height of the second stirring blade in the kettle body, and 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.
[0012] Furthermore, the feed pipe includes a first feed pipe and a second feed pipe, the pipe mouth of the first feed pipe is arranged adjacent to the position of the first stirring blade and is lower than the height of the first stirring blade in the kettle body, and the pipe mouth of the second feed pipe is arranged adjacent to the position of the second stirring blade and is higher than the height of the second stirring blade in the kettle body.
[0013] Furthermore, the first feed pipe and the second feed pipe are both multiple, and viewed along the axial direction of the rotating shaft, the pipe openings of the first feed pipe and the pipe openings of the second feed pipe are respectively located around the first stirring blade and the second stirring blade;
[0014] Furthermore, in the horizontal direction, the distance from the orifice of the first feed pipe to the edge of the first stirring blade, and the distance from the orifice of the second feed pipe to the edge of the second stirring blade are both D / 120-D / 12, where D is the diameter of the kettle body.
[0015] Furthermore, the pipe opening of the first feed pipe is located inside the guide cylinder, and the second feed pipe passes through the inside of the guide cylinder and then extends out from the bottom of the guide cylinder.
[0016] Furthermore, there are a plurality of baffles, which are arranged on the inner side wall of the kettle body at intervals along the circumferential direction.
[0017] Furthermore, a shielding portion is formed between the two second flow guide ports at the upper portion of the guide cylinder, and a line connecting the baffle plate and the axis of the kettle body passes through the second flow guide ports along a cross section perpendicular to the axis of the kettle body.
[0018] Furthermore, a discharge port is provided on the kettle body, and a height of the discharge port is higher than a height of a lower edge of the second guide port.
[0019] Furthermore, when viewed along the axial direction of the kettle body, the discharge port corresponds to the position of the shielding portion of the guide cylinder.
[0020] Furthermore, the reactor further comprises a filter tank, a feed port is arranged at the upper portion of the filter tank, and the discharge port is connected to the feed port through a connecting pipe.
[0021] Further, at least one of the following is included:
[0022] The sum of the areas of the second guide ports is 1-1.5 times the cross-sectional area of the guide tube perpendicular to the axis;
[0023] In a single guide cylinder, the height of the second guide opening is 0.7-1.1 times the width of the second guide opening in the circumferential direction of the kettle body.
[0024] In summary, in the present invention, by arranging the guide cylinder, the baffle plate and the stirring device, a relatively uniform flow field can be formed inside the kettle during the reaction, thereby improving the reaction efficiency.
[0025] 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
[0026] Figure 1 Shown is a schematic structural diagram of a reactor with optimized internal flow field provided by an embodiment of the utility model.
[0027] Figure 2 Shown Figure 1 Schematic diagram of the structure of the middle guide tube.
[0028] Figure 3 The figure shows a schematic diagram of the positional relationship between the second guide port on the guide cylinder and the baffle plate when viewed along the axial direction of the kettle body.
[0029] Figure 4 Shown Figure 1 Schematic diagram of the enlarged structure at the circle. DETAILED DESCRIPTION
[0030] 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.
[0031] The utility model provides a reaction kettle with optimized internal flow field. The reaction kettle can form a relatively consistent flow field inside the kettle body during reaction, thereby improving reaction efficiency.
[0032] Figure 1 The figure shows a schematic diagram of the structure of a reactor with optimized internal flow field provided by an embodiment of the utility model. Figure 2 Shown Figure 1 Schematic diagram of the structure of the middle guide tube. Figure 1 to Figure 2As shown, the reactor with optimized internal flow field provided by the utility model comprises a reactor body 10, a guide cylinder 20, a stirring device 30, a feed pipe 40, and a baffle 50. The guide cylinder 20 is arranged in the reactor body 10, a first flow guide port 21 is formed at the bottom of the guide cylinder 20, and a second flow guide port 22 is opened on the side wall of the upper part of the guide cylinder 20. At least part of the port of the feed pipe 40 is located in the guide cylinder 20. The stirring device 30 comprises a rotating shaft 31 and a first stirring blade 32 and a second stirring blade 33 arranged on the rotating shaft 31. The rotating shaft 31 is penetrated in the guide cylinder 20 and passes out from the bottom of the guide cylinder 20, that is, from the first flow guide port 21. The first stirring blade 32 is arranged in the guide cylinder 20, and the second stirring blade 33 is arranged at the bottom of the reactor body 10 and is located outside the guide cylinder 20. The baffle plate 50 is vertically arranged on the side wall of the kettle body 10, the height of the lower end of the baffle plate 50 in the kettle body 10 is lower than the height of the second stirring blade 33 in the kettle body 10, and the height of the upper end of the baffle plate 50 in the kettle body 10 is higher than the height of the lower edge of the second guide port 22 of the guide cylinder 20 in the kettle body 10.
[0033] In this embodiment, due to the presence of the guide cylinder 20, a first area 23 can be formed inside the guide cylinder 20, and a second area 24 can be formed between the guide cylinder 20 and the inner wall of the kettle body 10. When the product is produced, raw materials can be added to the slurry in the guide cylinder 20 through the feed pipe 40. Due to the presence of the guide cylinder 20 and the first stirring blade 32, in the first area 23, the slurry cannot diffuse to the periphery of the kettle body 10, and can only continue to move downward along with the flow field in the entire kettle body 10; when the slurry flows out from the first guide port 21 of the guide cylinder 20, due to the presence of the second stirring blade 33, the slurry will be driven by the second stirring blade 33 to the periphery of the kettle body 10, and the raw materials are mixed during the driving process. 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; because during the stirring process of the second stirring blade 33, the slurry actually reaches the edge of the kettle body 10 while rotating around the axis of the rotating shaft 31, at this time, the flow field will not only move upward, but also make a certain rotational movement; in this embodiment, the existence of the baffle 50, and the baffle and the second stirring blade 33 and the second guide port 22 suppress the rotational movement of the slurry, but guide the movement of the flow field from bottom to top. Since the uppermost end of the baffle 50 is higher than the lower edge of the second guide port 22, and the lowermost end of the baffle 50 is lower than the second stirring blade 33, the guide cylinder 20 can complete the guidance during the entire upward movement of the flow field, and finally make the slurry re-enter the guide cylinder 20 from the second guide port 22 to complete a cycle. That is, when the reactor is reacting, a relatively consistent flow field is formed inside the kettle body 10 to improve the reaction efficiency.
[0034] Further, one end of the feed pipe 40 is fixed to the top of the kettle body 10, and the other end extends obliquely downward. In the cross section perpendicular to the rotating shaft 31, the distance from the feed pipe 40 to the rotating shaft 31 gradually decreases along the up and down direction. That is, the feed pipe 40 is arranged obliquely from top to bottom in the direction where the rotating shaft 31 is located. The feed pipe 40 includes a first feed pipe 41 and a second feed pipe 42, the first feed pipe 41 and the second feed pipe 42, the pipe mouth of the first feed pipe 41 is arranged adjacent to the position of the first stirring blade 32, preferably the pipe mouth of the first feed pipe 41 is arranged adjacent to the first stirring blade 32, and is lower than the height of the first stirring blade 32 in the kettle body 10, and the pipe mouth of the second feed pipe 42 is arranged adjacent to the position of the second stirring blade 33, preferably, the pipe mouth of the second feed pipe 42 is arranged adjacent to the second stirring blade 33, and is higher than the height of the second stirring blade 33 in the kettle body 10. In other words, the raw material entering the kettle body 10 through the first feed pipe 41 is transported to below the first stirring blade 32 , while the raw material entering the kettle body 10 through the second feed pipe 42 is transported to above the second stirring blade 33 .
[0035] In this embodiment, by setting the first feed pipe 41 and the second feed pipe 42, and limiting the positions of the first feed pipe 41, the second feed pipe 42, the first stirring blade 32 and the second stirring blade 33. During production, a portion of the raw materials is fed into the kettle body 10 through the first feed pipe 41. When the raw materials of this portion are fed into the kettle body 10, they will be directly fed into the lower part of the first stirring blade 32, and the first stirring blade 32 will directly drive the raw materials downward, and disperse the raw materials during the driving process. Another portion of the raw materials will be fed into the upper part of the second stirring blade 33 through the second feed pipe 42. The raw materials fed into the kettle body 10 by the second feed pipe 42 will be dispersed by the second stirring blade 33 on the one hand, and on the other hand, after merging with the raw materials driven downward by the first stirring blade 32, they will be driven to the edge of the kettle body 10 by the second stirring blade 33 along with the original slurry, and all the raw materials will be mixed during the driving process.
[0036] Furthermore, the mouth of the first feed pipe 41 is located inside the guide cylinder 20, and the second feed pipe 42 extends from the bottom of the guide cylinder 20 after passing through the inside of the guide cylinder 20, that is, the height of the mouth of the second feed pipe 42 in the kettle body 10 is lower than the height of the second guide port 22.
[0037] The first feed pipe 41 and the second feed pipe 42 can be multiple, such as two, three or more. The first feed pipe 41 and the second feed pipe 42 are arranged around the rotating shaft 31.
[0038] Preferably, viewed along the axis direction of the rotating shaft 31, the openings of the first feed pipe 41 and the second feed pipe 42 are respectively located around the first stirring blade 32 and the second stirring blade 33. That is, the first feed pipe 41 does not extend directly below the first stirring blade 32, and the second feed pipe 42 does not extend directly above the second stirring blade 33.
[0039] In the horizontal direction, the distance from the orifice of the first feed pipe 41 to the edge of the first stirring blade 32 and the distance from the orifice of the second feed pipe 42 to the edge of the second stirring blade 33 are both D / 120-D / 12, where D is the diameter of the kettle body 10.
[0040] Furthermore, the first feed pipe 41 and the second feed pipe 42 can be fixed to the inner wall of the guide cylinder 20 by a connecting rod to prevent the two from shaking.
[0041] Figure 3 The figure shows the positional relationship between the second guide port on the guide cylinder and the baffle plate when viewed along the axis of the kettle body. Figure 3 As shown, in this embodiment, at the upper part of the guide tube 20, two second guide ports 22 (see Figure 3 A shielding portion 25 is formed between the unfilled area of the middle guide tube 20 (see Figure 3 The filling area of the guide tube 20 is formed in the middle of the guide tube 20, that is, the upper side wall of the guide tube 20 is not completely open, and the second guide port 22 is an opening formed in the upper part of the guide tube 20. There can be multiple second guide ports 22 and shielding portions 25, which are arranged in sequence.
[0042] By setting the shielding portion 25 and the second guide port 22 at intervals, the flow velocity of the flow field when entering the first area 23 can be effectively increased, so that the flow field can more easily mix the raw materials in the first area 23 .
[0043] Please continue to refer to Figure 3 , there are multiple baffles 50, and the multiple baffles 50 are arranged on the inner side wall of the kettle body 10 at intervals along the circumferential direction. In this embodiment, along the cross section perpendicular to the axis of the kettle body 10, the line between the baffle 50 and the axis of the kettle body 10 passes through the second guide port 22. That is, from the direction along the axis of the kettle body 10, the positions of the baffle 50 and the second guide port 22 of the guide cylinder 20 correspond. That is, on the same cross section perpendicular to the axis of the kettle body 10, the line between at least one baffle 50 and the axis of the kettle body 10 passes through the second guide port 22.
[0044] This enables the slurry to re-enter the guide tube 20 more quickly when the baffle plate 50 guides the flow field.
[0045] 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.
[0046] 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 .
[0047] Please continue to refer to Figure 1 and Figure 2 In this embodiment, a first insulation sleeve (not shown) is provided in the side wall of the kettle body 10, a second insulation sleeve 26 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).
[0048] An outward flange 28 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.
[0049] Figure 4 Shown Figure 1 The enlarged structure diagram of the circle in the middle. Figure 4 As shown, a constricted portion 411 may be formed at the end of the first feed pipe 41, that is, the diameter of the end of the first feed pipe 41 is smaller than the diameter of the middle portion, so that the raw materials can enter the synthesis reactor faster.
[0050] The end of the second feeding pipe 42 may be the same as the end of the first feeding pipe 41 , and will not be described in detail herein.
[0051] Please continue to see Figure 1 In this embodiment, a discharge port 11 is formed on the kettle body 10, and the height of the discharge port 11 is higher than the height of the lower edge of the second guide port 22. From the axial direction of the kettle body 10, the discharge port 11 corresponds to the position of the shielding portion 25 of the guide cylinder 20. That is, on the same cross section perpendicular to the axis of the kettle 10, the line between the discharge port 11 and the axis of the kettle body 10 passes through the shielding portion 25. When the discharge port 11 is set in this area, due to the existence of the shielding portion 25, the flow velocity of this area during the flow field circulation is low, and the overflow of the molded product can be better performed.
[0052] The reactor also includes a filter tank 60, and a feed port 61 is provided at the upper part of the filter tank 60, and the discharge port 11 is connected to the feed port 61 through a connecting pipe. With the addition of raw materials, the liquid level of the slurry in the reactor body 10 will gradually increase. When the liquid level of the slurry is higher than the height of the discharge port 11, the slurry will flow into the filter tank 60 through the connecting pipe. Due to the existence of the circulating flow field, the formed product will be transported to the upper part of the slurry along the circulating flow field. At this time, the formed product will enter the filter tank 60 for filtration.
[0053] In this embodiment, the height of the discharge port 11 is flush with the middle of the second guide port 22 and is higher than the height of the feed port 61 .
[0054] The reactor further includes a cleaning device 70 , which is connected to the bottom of the filter tank 60 and cleans the slurry flowing into the filter tank 60 to obtain a formed product in the filter tank 60 .
[0055] Furthermore, in this embodiment, the height of the discharge port 11 of the kettle body 10 is higher than the height of the feed port 61 of the filter tank 60 , so that the slurry overflowing from the kettle body 10 can smoothly enter the filter tank 60 .
[0056] A lifting lug 12 is provided in the middle of the kettle body 10 . The lifting lug 12 can be used to lift the kettle body 10 to a height higher than the filter tank 60 , and can also ensure the stability of the center of gravity of the kettle body 10 during lifting.
[0057] In summary, in the present invention, by providing the guide cylinder 20, the baffle plate 50 and the stirring device 30, a relatively uniform flow field can be formed inside the kettle body 10 during the reaction, thereby improving the reaction efficiency.
[0058] 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 reactor with optimized internal flow field, characterized in that: include: Kettle body; A guide tube is arranged in the kettle body, a first guide port is formed at the bottom of the guide tube, and a second guide port is opened on the side wall of the upper part of the guide tube; A feed pipe, at least a portion of the feed pipe opening is disposed in the guide cylinder; A stirring device, comprising a rotating shaft, and a first stirring blade and a second stirring blade arranged on the rotating shaft, wherein the rotating shaft is arranged in the guide cylinder and passes through the bottom of the guide cylinder, the first stirring blade is arranged in the guide cylinder, and the second stirring blade is arranged at the bottom of the kettle body and is located outside the guide cylinder; A baffle is vertically arranged on the side wall of the kettle body, wherein the height of the lower end of the baffle in the kettle body is lower than the height of the second stirring blade in the kettle body, and 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.
2. The reactor with optimized internal flow field according to claim 1, characterized in that: The feed pipe includes a first feed pipe and a second feed pipe, the pipe mouth of the first feed pipe is arranged adjacent to the position of the first stirring blade and is lower than the height of the first stirring blade in the kettle body, and the pipe mouth of the second feed pipe is arranged adjacent to the position of the second stirring blade and is higher than the height of the second stirring blade in the kettle body.
3. The reactor with optimized internal flow field according to claim 2, characterized in that: Include at least one of the following: There are multiple first feed pipes and multiple second feed pipes. When viewed along the axis of the rotating shaft, the pipe openings of the first feed pipe and the pipe openings of the second feed pipe are respectively located around the first stirring blade and the second stirring blade; In the horizontal direction, the distance from the orifice of the first feed pipe to the edge of the first stirring blade, and the distance from the orifice of the second feed pipe to the edge of the second stirring blade are both D / 120-D / 12, where D is the diameter of the kettle body.
4. The reactor with optimized internal flow field according to claim 2, characterized in that: The pipe opening of the first feeding pipe is located inside the guide cylinder, and the second feeding pipe passes through the inside of the guide cylinder and then extends out from the bottom of the guide cylinder.
5. The reactor with optimized internal flow field according to claim 1, characterized in that: There are a plurality of baffles, which are arranged on the inner side wall of the kettle body at intervals along the circumferential direction.
6. The reactor with optimized internal flow field according to claim 5, characterized in that: A shielding portion is formed between the two second flow guide ports at the upper portion of the guide cylinder, and a line connecting the baffle plate and the axis of the kettle body passes through the second flow guide ports along a cross section perpendicular to the axis of the kettle body.
7. The reactor with optimized internal flow field according to claim 1, characterized in that: A discharge port is arranged on the kettle body, and the height of the discharge port is higher than the height of the lower edge of the second guide port.
8. The reactor with optimized internal flow field according to claim 7, characterized in that: When viewed along the axial direction of the kettle body, the discharge port corresponds to the position of the shielding portion of the guide cylinder.
9. The reactor with optimized internal flow field according to claim 7, characterized in that: The reactor further comprises a filter tank, a feed port is arranged at the upper portion of the filter tank, and the discharge port is connected with the feed port through a connecting pipe.
10. The reactor with optimized internal flow field according to claim 1, characterized in that: Include at least one of the following: The sum of the areas of the second guide ports is 1-1.5 times the cross-sectional area of the guide tube perpendicular to the axis; In a single guide cylinder, the height of the second guide opening is 0.7-1.1 times the width of the second guide opening in the circumferential direction of the kettle body.