CN211800762U - Ternary precursor reaction kettle for lithium ion battery - Google Patents
Ternary precursor reaction kettle for lithium ion battery Download PDFInfo
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- CN211800762U CN211800762U CN201921654024.3U CN201921654024U CN211800762U CN 211800762 U CN211800762 U CN 211800762U CN 201921654024 U CN201921654024 U CN 201921654024U CN 211800762 U CN211800762 U CN 211800762U
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Abstract
The utility model relates to a ternary precursor reaction kettle for lithium ion batteries, which comprises an airtight reaction kettle body provided with a double-layer jacket, wherein a stirring shaft is arranged at the inner center of the reaction kettle body, a stirring motor is arranged at the top of the reaction kettle body, and the stirring motor is connected with the top of the stirring shaft through a speed reduction motor; the middle part to the bottom of the stirring shaft is sequentially provided with a first layer of axial flow stirring paddle, a second layer of axial flow stirring paddle, stirring wings and a plate-frame type stirring paddle from top to bottom; still be equipped with reserve dog-house, feed inlet, discharge gate, go up overflow mouth, underflow mouth, survey the quick plug mouth of PH, circulating water import and circulating water export on the reation kettle body, and still evenly distributed has the fender stream board around the inner wall of the reation kettle body. The utility model has the advantages that: through the utility model discloses a reation kettle can form stable vortex, granule atress even under high concentration solid content thick liquids system, the product that the sphericity is high, particle size distribution is narrow.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery ternary cathode material production, in particular to be used for lithium ion battery ternary precursor reation kettle.
Background
With the increasing demand of new energy markets for lithium ion batteries, the demand of ternary cathode materials of the lithium ion batteries is greatly increased day by day, and the demand of corresponding precursors is also continuously increased. The lithium ion ternary cathode material is prepared by adopting nickel, cobalt and manganese hydroxide as a precursor and matching a lithium source with a stoichiometric ratio for high-temperature sintering. The appearance, the particle size distribution, the secondary particle cluster aggregation structure and the like of the precursor directly influence multiple performance indexes of the ternary cathode material. In the structure of the existing reaction kettle, during the synthesis reaction, the slurry vortex is stressed unevenly, so that more crystal nuclei cannot be uniformly secondarily agglomerated after being generated, and the problems of irregular particle formation, low sphericity, too wide particle size distribution and the like are caused.
Therefore, a reaction kettle which forms stable vortex, has uniform particle stress, high sphericity and narrow particle size distribution under a high-concentration solid content slurry system is needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a can form stable vortex, granule atress even under high concentration solid content thick liquids system, sphericity height, the narrow be used for lithium ion battery ternary precursor reation kettle of particle size distribution.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a be used for lithium ion battery ternary precursor reation kettle which innovation point lies in: the reaction kettle comprises a closed reaction kettle body provided with a double-layer jacket, wherein a stirring shaft is arranged in the center of the interior of the reaction kettle body, and the bottom of the stirring shaft is spaced from the kettle bottom by a distance of 1/10-1/20 kettle height; a stirring motor is arranged at the top of the reaction kettle body, and the stirring motor is connected with the top of the stirring shaft through a speed reducing motor;
the middle part to the bottom of the stirring shaft is sequentially provided with a first layer of axial flow stirring paddle, a second layer of axial flow stirring paddle, stirring wings and a plate-frame type stirring paddle from top to bottom, the blades of the first layer of axial flow stirring paddle and the second layer of axial flow stirring paddle are cambered surfaces in the clockwise direction, the top end of each blade forms an included angle of 10-60 degrees with the horizontal plane, the root part of each blade forms an included angle of 30-80 degrees with the horizontal plane, and the root part of each blade forms an included angle of 20-70 degrees with the horizontal plane of the top end of each blade; the stirring wings and the stirring shaft are transversely and vertically arranged and are in a long wing shape, and two outer corners are in round angles; the plate-frame type stirring paddle is vertical to the stirring shaft in the vertical direction, the outer corners of the plate-frame type stirring paddle are all round corners, and the folded angle of 10-60 degrees is formed between the wide part of the paddle and the horizontal plane, wherein the wide part of the paddle is 1/5-1/2 in the vertical upward direction at the bottom of the plate-frame type stirring paddle sheet;
a spare feeding port and a spare feeding port which are communicated with the reaction kettle body are distributed on the kettle top cover of the reaction kettle body, and a discharging port which is communicated with the reaction kettle body is arranged at the center of the bottom of the reaction kettle body; an upper overflow port and a lower overflow port which are communicated with the reaction kettle body are sequentially arranged at the upper part of one side of the reaction kettle body from top to bottom, and a quick PH measuring plugging port for online monitoring of the PH of the slurry is arranged at the lower part of the other side of the reaction kettle;
the double-layer jacket at the bottom of the reaction kettle body is provided with a circulating water inlet, the double-layer jacket at the upper end of the PH measurement quick plugging port is provided with a circulating water outlet, and flow baffles are evenly distributed on the periphery of the inner wall of the reaction kettle body.
Furthermore, the first layer of axial flow stirring paddle and the second layer of axial flow stirring paddle are distributed at an included angle of 45 degrees.
Further, the length of blades of the first layer of axial flow stirring paddle and the second layer of axial flow stirring paddle is 1/6-1/3 of the inner diameter of the kettle, the width of the blades is 1/2-1/5 of the diameter of the blades, and the distance between the blades is 1/5-1/10 of the height of the kettle.
Further, the width of the plate-frame type stirring paddle blade is 1/2-1/3 of the kettle diameter, and the height of the plate-frame type stirring paddle blade is 1/10-1/5 of the kettle height.
Further, the lower overflow port is located at the position of 0.6-8.0 of the height of the reaction kettle body, and the distance between the upper overflow port and the lower overflow port is 0.1-0.2 of the height of the reaction kettle body.
Furthermore, the width of the flow baffle is 1/20-1/30, the length is 1/3-2/3, the thickness is 0.2-1.0 cm, and the gap distance between the flow baffle and the kettle body is 0-1 cm.
The utility model has the advantages that: the utility model is used for lithium ion battery ternary precursor reation kettle, moreover, the steam generator is simple in structure, paddle structure and overall arrangement on its (mixing) shaft, can be in the thick liquids of great solid content, it is even to make particle size distribution, the good secondary reunion granule of sphericity, the appearance of better control precursor in the liquid phase coprecipitation reaction promptly, particle size distribution, and can satisfy the large-scale production of ternary precursor under the higher solid content condition, this reation kettle can be fit for forming high solid content thick liquids system under high concentration thick liquids system, stabilize the vortex, its granule atress is even, the sphericity is high, the narrow and single pot output of particle size distribution obviously is higher than other reation kettles.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the ternary precursor reaction kettle for the lithium ion battery of the present invention.
FIG. 2 is a schematic layout of blades on the stirring shaft in FIG. 1.
Detailed Description
The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the scope of the present invention.
Example 1
The embodiment is used for a ternary precursor reaction kettle of a lithium ion battery, and comprises a closed reaction kettle body provided with a double-layer jacket 14, wherein a stirring shaft 11 is arranged at the center inside the reaction kettle body, and the bottom of the stirring shaft 11 is spaced from the bottom of the reaction kettle by a distance of 1/10-1/20 kettle height; the top of the reaction kettle body is provided with a stirring motor 1, and the stirring motor 1 is connected with the top of the stirring shaft 11 through a speed reducing motor 9.
As shown in fig. 2, a first layer of axial flow stirring paddles 4, a second layer of axial flow stirring paddles 4, stirring wings 5 and a plate-frame type stirring paddle 7 are sequentially arranged from top to bottom in the middle of a stirring shaft 11, blades of the first layer of axial flow stirring paddles 4 and the second layer of axial flow stirring paddles 4 are cambered surfaces in the clockwise direction, the top end of each blade forms an included angle of 10-60 degrees with the horizontal plane, the root part of each blade forms an included angle of 30-80 degrees with the horizontal plane, and the root part of each blade is separated from the horizontal plane of the top end of each blade by 20-70 degrees; the first layer of axial flow stirring paddle 4 and the second layer of axial flow stirring paddle 4 are distributed at an included angle of 45 degrees, the length of each blade of the first layer of axial flow stirring paddle 4 and the second layer of axial flow stirring paddle 4 is 1/6-1/3 of the inner diameter of the kettle, the width of each blade is 1/2-1/5 of the diameter of each blade, and the distance between the blades is 1/5-1/10 of the height of the kettle.
The stirring wings 5 and the stirring shaft 11 are transversely and vertically arranged and are in a long wing shape, and two outer corners are in round angles; the plate-and-frame type stirring paddle 7 is vertical to the stirring shaft 11, the outer corners are all fillets, the wide positions of blades in the vertical upward direction 1/5-1/2 at the bottom of the 7 blades of the plate-and-frame type stirring paddle are at a folding angle of 10-60 degrees with the horizontal plane, the width of the blades of the plate-and-frame type stirring paddle 7 is 1/2-1/3 of the diameter of the kettle, and the height of the blades is 1/10-1/5 of the height of the kettle.
A spare feeding port 2 and a spare feeding port 10 which are communicated with the reaction kettle body are distributed on the kettle top cover of the reaction kettle body, and a discharging port 8 which is communicated with the reaction kettle body is arranged at the center of the bottom of the reaction kettle body; the upper portion of one side of the reaction kettle body is sequentially provided with an upper overflow port 12 and a lower overflow port 13 from top to bottom, the upper overflow port 12 and the lower overflow port 13 are communicated with the reaction kettle body, the lower overflow port 13 is located at the position of 0.6-8.0 of the kettle height of the reaction kettle body, the upper overflow port 12 and the lower overflow port 13 are separated by 0.1-0.2 of the kettle height, and the lower portion of the other side of the reaction kettle is provided with a PH measuring quick plugging port 6 for monitoring the PH of the slurry on line.
A circulating water inlet 16 is arranged on a double-layer jacket 14 at the bottom of the reaction kettle body, a circulating water outlet 3 is arranged on the double-layer jacket 14 at the upper end of the PH measuring quick plugging port 6, flow baffle plates 15 are evenly distributed on the periphery of the inner wall of the reaction kettle body, the width of each flow baffle plate 15 is 1/20-1/30, the length of each flow baffle plate is 1/3-2/3, the thickness of each flow baffle plate is 0.2-1.0 cm, and the gap distance between each flow baffle plate 15 and the kettle body is 0-1 cm.
Example 2
The top end of the kettle body is provided with a stirring motor 1, the lower part of the kettle body is connected with a speed reducing motor 9, a spare feeding port 2 is arranged on a kettle top cover, a feeding port 10 is distributed on the kettle top cover, an upper overflow port 12 and a lower overflow port 13 are arranged on the side of the kettle, a circulating water outlet 3 is arranged in a jacket 14, baffle plates 15 are equally distributed on the periphery of the inner wall of the kettle, a quick plugging electrode socket 6 is arranged at the lower corner of the side of the kettle and used for monitoring the PH of slurry on line, a discharging port 8 is arranged at the bottommost end of the kettle, the jacket 14 is arranged outside the inner kettle, a circulating water inlet 16 is arranged at; the first layer of blades and the second layer of blades are four blades, the upper blades and the lower blades are distributed at an included angle of 45 degrees, the second part is a combination of the stirring wings 5 and the plate-frame type stirring paddles 7, the stirring wings 5 are distributed linearly according to two wings and are distributed on the same straight plane with the first layer of axial flow stirring paddles 4 of the first part; the bottommost bottom of the second part is provided with plate-frame type stirring paddles 7 which are distributed to be the same as the first layer of axial flow stirring paddles 4 of the first part in a straight plane.
The ternary material reaction kettle provided by the embodiment has the advantages of simple structure and stable performance, and can be used for preparing secondary agglomerated particles with uniform particle size distribution and excellent sphericity in slurry with larger solid content.
Example 3
The structure of the stirring shaft is as in embodiment 1, and the difference is that the first part of the stirring shaft 11 is divided into two layers from top to bottom in the specification and the combination layout of the blades of the first part of the axial flow stirring paddles 4 above the stirring shaft 11, and the first layer and the second layer are both three-blade axial flow stirring paddles 4; and are distributed at an included angle of 60 degrees. The second part of the wing frame is combined, the stirring wings 5 are two, each wing and the first layer of axial flow stirring paddle 4 of the first part are distributed in the same straight plane, and are distributed with the second layer of axial flow stirring paddle 4 at an included angle of 60 degrees in the longitudinal direction; the second part is the lowest layer plate frame type stirring paddle 7, and the distribution and the first layer axial flow stirring paddle 4 are the same straight plane cloth.
The ternary material reaction kettle provided by the embodiment has a simple structure, and the paddle structure and the layout on the stirring shaft can prepare secondary agglomerated particles with uniform particle size distribution and excellent sphericity in the slurry with larger solid content, so that the yield of the material is greatly improved, and the generation of small particles is reduced.
The basic principles and main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a be used for lithium ion battery ternary precursor reation kettle which characterized in that: the reaction kettle comprises a closed reaction kettle body provided with a double-layer jacket, wherein a stirring shaft is arranged in the center of the interior of the reaction kettle body, and the bottom of the stirring shaft is spaced from the kettle bottom by a distance of 1/10-1/20 kettle height; a stirring motor is arranged at the top of the reaction kettle body, and the stirring motor is connected with the top of the stirring shaft through a speed reducing motor;
the middle part to the bottom of the stirring shaft is sequentially provided with a first layer of axial flow stirring paddle, a second layer of axial flow stirring paddle, stirring wings and a plate-frame type stirring paddle from top to bottom, the blades of the first layer of axial flow stirring paddle and the second layer of axial flow stirring paddle are cambered surfaces in the clockwise direction, the top end of each blade forms an included angle of 10-60 degrees with the horizontal plane, the root part of each blade forms an included angle of 30-80 degrees with the horizontal plane, and the root part of each blade forms an included angle of 20-70 degrees with the horizontal plane of the top end of each blade; the stirring wings and the stirring shaft are transversely and vertically arranged and are in a long wing shape, and two outer corners are in round angles; the plate-frame type stirring paddle is vertical to the stirring shaft in the vertical direction, the outer corners of the plate-frame type stirring paddle are all round corners, and the folded angle of 10-60 degrees is formed between the wide part of the paddle and the horizontal plane, wherein the wide part of the paddle is 1/5-1/2 in the vertical upward direction at the bottom of the plate-frame type stirring paddle sheet;
a spare feeding port and a spare feeding port which are communicated with the reaction kettle body are distributed on the kettle top cover of the reaction kettle body, and a discharging port which is communicated with the reaction kettle body is arranged at the center of the bottom of the reaction kettle body; an upper overflow port and a lower overflow port which are communicated with the reaction kettle body are sequentially arranged at the upper part of one side of the reaction kettle body from top to bottom, and a quick PH measuring plugging port for online monitoring of the PH of the slurry is arranged at the lower part of the other side of the reaction kettle;
the double-layer jacket at the bottom of the reaction kettle body is provided with a circulating water inlet, the double-layer jacket at the upper end of the PH measurement quick plugging port is provided with a circulating water outlet, and flow baffles are evenly distributed on the periphery of the inner wall of the reaction kettle body.
2. The ternary precursor reaction kettle for the lithium ion battery according to claim 1, wherein: the first layer of axial flow stirring paddle and the second layer of axial flow stirring paddle are distributed at an included angle of 45 degrees.
3. The ternary precursor reaction kettle for the lithium ion battery according to claim 1 or 2, wherein: the length of the blades of the first layer of axial flow stirring paddle and the second layer of axial flow stirring paddle is 1/6-1/3 of the inner diameter of the kettle, the width of the blades is 1/2-1/5 of the diameter of the blades, and the distance between the blades is 1/5-1/10 of the height of the kettle.
4. The ternary precursor reaction kettle for the lithium ion battery according to claim 1, wherein: the width of the plate-frame type stirring paddle blade is 1/2-1/3 of the kettle diameter, and the height of the plate-frame type stirring paddle blade is 1/10-1/5 of the kettle height.
5. The ternary precursor reaction kettle for the lithium ion battery according to claim 1, wherein: the lower overflow port is located at the position of 0.6-8.0 of the height of the reaction kettle body, and the distance between the upper overflow port and the lower overflow port is 0.1-0.2 of the height of the reaction kettle body.
6. The ternary precursor reaction kettle for the lithium ion battery according to claim 1, wherein: the width of the flow baffle is 1/20-1/30, the length is 1/3-2/3, the thickness is 0.2-1.0 cm, and the gap distance between the flow baffle and the kettle body is 0-1 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921654024.3U CN211800762U (en) | 2019-09-30 | 2019-09-30 | Ternary precursor reaction kettle for lithium ion battery |
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| CN201921654024.3U CN211800762U (en) | 2019-09-30 | 2019-09-30 | Ternary precursor reaction kettle for lithium ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768721A (en) * | 2022-04-08 | 2022-07-22 | 宁夏中色金辉新能源有限公司 | Device and method for preparing lithium battery positive electrode material precursors with various particle sizes |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768721A (en) * | 2022-04-08 | 2022-07-22 | 宁夏中色金辉新能源有限公司 | Device and method for preparing lithium battery positive electrode material precursors with various particle sizes |
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