CN211070054U - Large-volume ternary cathode material precursor reaction kettle - Google Patents
Large-volume ternary cathode material precursor reaction kettle Download PDFInfo
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- CN211070054U CN211070054U CN201920919275.3U CN201920919275U CN211070054U CN 211070054 U CN211070054 U CN 211070054U CN 201920919275 U CN201920919275 U CN 201920919275U CN 211070054 U CN211070054 U CN 211070054U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A large-volume ternary anode material precursor reaction kettle; comprises a closed kettle body, wherein a reaction chamber is arranged in the kettle body; a feed inlet and a discharge outlet are formed in the kettle body and are communicated with the reaction chamber; the device also comprises a main stirring device and an auxiliary stirring device; the main stirring device comprises a first rotating shaft, and a plurality of groups of first stirring blades are arranged at intervals from top to bottom; the auxiliary main stirring device comprises a second rotating shaft, is parallel to the first rotating shaft and is provided with a plurality of groups of second stirring blades at intervals from top to bottom; the outer wall of the kettle body is wound with a circulating heat transfer jacket, a heat transfer coil is arranged in the kettle body, and the pipelines are spirally arranged in a stacked mode. The utility model provides a pure lag of heat transfer, long time after reation kettle enlargies to and the shearing force weakens and leads to precursor granule easily to reunite etc. not enough. Has the advantages of ingenious structural design, high heat transfer efficiency, strong stirring shearing force and the like.
Description
Technical Field
The utility model relates to a preparation equipment of lithium cell ternary cathode material precursor, concretely relates to big volume ternary cathode material precursor reation kettle.
Background
The production process of the ternary precursor is accompanied by physical and chemical reactions, phase change processes and energy conversion, and a plurality of factors influencing the reactions comprise: raw material flow, pH value, complexing agent concentration, reaction temperature, reaction atmosphere, stirring power, slurry density and the like, so that the method is a very complicated industrial production process.
For example, in the case of an externally heated jacketed reaction vessel used in industrial production, if the volume is enlarged for higher production, the heat transfer area of the vessel wall per unit volume is reduced. Meanwhile, the reaction kettle has large volume and thick kettle wall, and is a controlled object with large heat capacity, pure lag in heat transfer and long time.
If an additional auxiliary heating device is added in the reaction kettle to improve the heat transfer efficiency, fluid dead corners are easy to occur, and the maintenance and repair are difficult. In addition, after the reaction volume is enlarged, the critical value of the highest stirring speed is also reduced, and the precursor particles can be abnormally agglomerated due to the weakening of the shearing force although a certain mixing effect can be achieved.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The utility model aims at providing a big volume ternary cathode material precursor reation kettle.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a large-volume ternary anode material precursor reaction kettle; comprises a closed kettle body, wherein the closed kettle body is provided with a reaction chamber;
the closed kettle body is provided with at least two feed inlets and a discharge outlet; each feed inlet and each discharge outlet are communicated with the reaction chamber;
wherein, also include a main mixing plant and at least one pair of mixing plants;
the main stirring device comprises a vertical first rotating shaft, the first rotating shaft is positioned at the geometric center of the cross section of the reaction chamber and is driven to rotate by a first driving device; a plurality of groups of first stirring blades are arranged on the first rotating shaft at intervals from top to bottom;
the auxiliary main stirring device is positioned at the side part of the main stirring device, comprises a vertical second rotating shaft, is arranged in parallel with the first rotating shaft of the main stirring device, and is driven to rotate by a second driving device; a plurality of groups of second stirring blades are arranged on the second rotating shaft at intervals from top to bottom;
wherein, the outer wall of the closed kettle body is wound with a circulating heat transfer jacket, at least one group of heat transfer coil pipes are arranged in the closed kettle body, the heat transfer coil pipes are positioned on the inner wall of the closed kettle body, and a heat medium inlet and a heat medium outlet of the heat transfer coil pipes are positioned at the outer side of the closed kettle body; the pipes of the heat transfer coil are spirally stacked.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the first stirring paddle comprises an upper paddle, a middle paddle and a lower paddle which are arranged in parallel in the vertical direction at intervals;
each second stirring paddle is positioned between the middle layer paddle and the lower layer paddle of the first stirring paddle.
2. In the above scheme, the first feed inlet extends into the upper part of the second stirring paddle of the auxiliary stirring device through a feed pipeline.
3. In the above scheme, the auxiliary stirring devices are provided with a plurality of groups, and the second rotating shafts of the auxiliary stirring devices are uniformly distributed in the circumferential direction of the first rotating shaft of the main stirring device.
4. In the scheme, a guide cylinder is coaxially positioned in the reaction chamber, is of a cylindrical structure and is open at the upper part and the lower part; the first rotating shaft of the main stirring device is arranged in the guide shell, a descending mixed liquid channel is formed in the guide shell through rotation, the descending mixed liquid flows out to the side part through an opening at the lower part, an ascending mixed liquid channel is formed at the outer side of the guide shell, and the ascending mixed liquid flows back to the guide shell through an opening at the upper part, so that a circulating channel of the mixed liquid is formed.
5. In the above scheme, the second rotating shaft of the auxiliary stirring device is located in the guide shell.
6. In the above scheme, the wall of the guide shell is of a hollow structure.
7. In the above scheme, the inner wall of the closed kettle body is provided with a baffle structure, the baffle structure is provided with a hollow cavity, and the heat transfer coil is fixedly arranged in the hollow cavity.
8. In the above scheme, the heat transfer coil pipes are provided with a plurality of groups, and the heat transfer coil pipes of each group are uniformly distributed on the inner wall of the closed kettle body in the circumferential direction.
9. In the above scheme, the heat transfer coil is arranged in the guide shell.
The utility model discloses a theory of operation and advantage as follows:
the utility model relates to a large-volume ternary anode material precursor reaction kettle; comprises a closed kettle body, wherein a reaction chamber is arranged in the kettle body; a feed inlet and a discharge outlet are formed in the kettle body and are communicated with the reaction chamber; the device also comprises a main stirring device and an auxiliary stirring device; the main stirring device comprises a first rotating shaft, and a plurality of groups of first stirring blades are arranged at intervals from top to bottom; the auxiliary main stirring device comprises a second rotating shaft, is parallel to the first rotating shaft and is provided with a plurality of groups of second stirring blades at intervals from top to bottom; the outer wall of the kettle body is wound with a circulating heat transfer jacket, a heat transfer coil is arranged in the kettle body, and the pipelines are spirally arranged in a stacked mode.
Compared with the prior art, the utility model provides a pure lag of heat transfer, long time after reation kettle enlargies to and the shearing force weakens and leads to precursor granule easily to reunite etc. not enough. Has the advantages of ingenious structural design, high heat transfer efficiency, strong stirring shearing force and the like.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the above drawings: 1. sealing the kettle body; 2. a reaction chamber; 3. a feed inlet; 3a, a first feed inlet; 3b, a second feed inlet; 4. a discharge port; 5. a first rotating shaft; 6. a first stirring blade; 7. a second rotating shaft; 8. a second stirring blade; 9. a feed line; 10. a draft tube; 11. a circulating heat transfer jacket; 12. a heat transfer coil; 13. a heating medium inlet; 14. a heating medium outlet; 15. a baffle structure; 16. a hollow chamber.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.
As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.
As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.
Referring to the attached figure 1, a large-volume ternary cathode material precursor reaction kettle; comprises a closed kettle body 1, wherein the closed kettle body 1 is provided with a reaction chamber 2.
A plurality of feed inlets 3 and a discharge outlet 4 are arranged on the closed kettle body 1; each feed inlet 3 and discharge gate 4 all communicate reaction chamber 2. Preferably, the first feed inlet 3a is arranged above the closed kettle body 1 and used for feeding a nickel-cobalt-manganese mixed salt solution; the second feed inlet 3b is arranged above the kettle body 1 and used for feeding alkali liquor; a third inlet (not shown) is also included for the introduction of the complexing agent.
The nickel-cobalt-manganese mixed salt solution, the alkali liquor and the complexing agent are mixed in the reaction chamber 2 to form a mixed solution, and the mixed solution becomes precursor slurry of the ternary cathode material after chemical reaction. Wherein, besides the nickel-cobalt-manganese mixed salt solution, the nickel-cobalt-aluminum mixed salt solution or the salt solution doped with other metal components on the basis of the above salt solution can be selected.
The discharge port 4 is arranged below the closed kettle body 1 and used for discharging the prepared ternary anode material precursor slurry, and the slurry contains a large amount of particles of the ternary anode material precursor.
Wherein, the stirring device also comprises a main stirring device and at least one auxiliary stirring device.
The main stirring device comprises a vertical first rotating shaft 5, the first rotating shaft 5 is positioned at the geometric center of the cross section of the reaction chamber 2 and is driven to rotate by a first driving device (not shown in the figure) arranged outside the closed kettle body 1, and the first driving device can comprise a motor and a speed reducer, which is the prior art; and a plurality of groups of first stirring blades 6 are arranged on the first rotating shaft 5 at intervals from top to bottom.
The auxiliary main stirring device is positioned at the side part of the main stirring device, and comprises a vertical second rotating shaft 7, the second rotating shaft 7 is arranged in parallel with the first rotating shaft 5 of the main stirring device and is driven to rotate by a second driving device (not shown in the figure) arranged outside the closed kettle body 1, and the second driving device comprises a motor and a speed reducer, and belongs to the prior art; and a plurality of groups of second stirring blades 8 are arranged on the second rotating shaft 7 at intervals from top to bottom.
Preferably, the first stirring paddle 6 comprises an upper paddle, a middle paddle and a lower paddle which are arranged in parallel in the vertical direction at intervals; each of the second stirring blades 8 is located between the middle blade and the lower blade of the first stirring blade 6. By means of the design, the dispersing effect of the precursor particles is further improved, and the second stirring paddle 8 can be of a turbine type, a paddle type or the like.
Preferably, the first feeding hole 3a extends into the upper part of the second stirring blade 8 of the auxiliary stirring device through a feeding pipeline 9. The mixed salt solution is directly fed above the second stirring blade 8, which contributes to improving the dispersibility of the precursor particles.
Preferably, the auxiliary stirring devices are provided with a plurality of groups, and the second rotating shafts 7 of the auxiliary stirring devices are uniformly distributed in the circumferential direction of the first rotating shaft 5 of the main stirring device. Therefore, the mixing effect of the mixed liquid is improved, the chemical reaction is promoted, the dispersibility of the precursor particles is improved, and abnormal agglomeration is avoided.
A guide shell 10 is coaxially positioned in the reaction chamber 2, the guide shell 10 is of a cylindrical structure, and the upper part and the lower part of the guide shell are open; the first rotating shaft 5 of the main stirring device and the second rotating shaft 7 of the auxiliary stirring device are both arranged in the guide cylinder 10, a descending mixed liquid flow channel is formed in the guide cylinder 10 through rotation, the descending mixed liquid flows out to the side part through an opening at the lower part, an ascending mixed liquid flow channel is formed outside the guide cylinder 10, and the ascending mixed liquid flows back to the guide cylinder 10 through an opening at the upper part, so that a circulation flow channel of the mixed liquid is formed.
Through the cooperation design of draft tube 10 and main, vice agitating unit, can bring following effect: firstly, the stirring degree of the mixed liquid is improved, and the direct mechanical shearing action of the stirring device on the mixed liquid is enhanced; secondly, a circulation path of the mixed liquid is limited, and a fully circulating flow pattern is established, so that all materials in the reaction chamber 2 can pass through a strong mixing area in the guide shell 10; and thirdly, the speed and the direction of the backflow of the mixed liquid in the reaction kettle are effectively controlled, and a specific flow pattern is obtained.
In conclusion, the design is beneficial to fully mixing the nickel-cobalt-manganese mixed salt solution, the alkali liquor and the complexing agent, so that the precursor forming effect is better, and meanwhile, the good dispersibility of the precursor particles can be ensured.
Wherein, the outer wall of the closed kettle body 1 is wound with a circulating heat transfer jacket 11, the circulating heat transfer jacket 11 can adopt the prior art and is provided with a heat medium inlet and a heat medium outlet, and heat medium (such as water, water vapor, heat transfer oil, liquid nitrogen and the like) circulates in the jacket 11. Preferably, the circulating heat transfer jacket 11 may be a half-pipe type, and a wide surface is attached to the outer wall of the kettle body 1, so as to increase the contact area with the outer wall of the kettle body 1 and improve the heat transfer effect with the closed kettle body 1.
At least one group of heat transfer coil pipes 12 are arranged in the closed kettle body 1, the heat transfer coil pipes 12 are positioned on the inner wall of the closed kettle body 1, and a heat medium inlet 13 and a heat medium outlet 14 of the closed kettle body are positioned on the outer side of the closed kettle body 1; the tubes of the heat transfer coil 12 are arranged in a spiral stack.
Through the setting of heat transfer coil 12, can promote the inside heat transfer efficiency of reaction chamber 2, cooperate the circulation heat transfer jacket 11 to realize heating airtight cauldron body 1 inside and outside simultaneously, and then reach preferred heat transfer efficiency.
The specific structure of the coil 12 is designed in the prior art, and can be grasped by a person skilled in the art, and the implementation form of the coil can be flexibly adjusted according to specific requirements.
Preferably, the heating medium inlet 13 and the heating medium outlet 14 of the heat transfer coil 12 can also be directly connected in series to the heating medium circulation path of the circulation heat transfer jacket 11.
Preferably, the wall of the guide shell 10 may be a hollow structure for flowing heat medium, and the heat medium inlet and the heat medium outlet may be connected in series with the heat medium inlet and the heat medium outlet of the circulating heat transfer jacket 11 or/and the heat transfer coil 12.
Wherein, the inner wall of the closed kettle body 1 is provided with a baffle structure 15, the baffle structure 15 is provided with a hollow chamber 16, and the heat transfer coil 12 is fixedly arranged in the hollow chamber 16. Indirect heat transfer with the mixed liquor occurs through baffle structure 15.
The baffle structure 15 is applied to the reaction kettle in the prior art, and has the function of changing the fluid force of the mixed liquid in the reaction chamber 2 and improving the dispersibility of the precursor. The design of the hollow chamber 16 is optimized for the improvement of the large-volume kettle body 1.
Preferably, the heat transfer coil 12 is provided with a plurality of groups, and the heat transfer coil 12 of each group is uniformly distributed on the inner wall of the closed kettle body 1 in the circumferential direction. Therefore, the heat transfer efficiency of the mixed liquid is improved, the mixed liquid is fully heated in a short time, the chemical reaction is promoted, and the formation of precursor particles is facilitated.
Preferably, the guide shell 10 is provided with the heat transfer coil 12, so that the mixed liquid is further transferred in the guide shell 10.
In this embodiment, the volume of the reaction chamber 2 is 30-60 cubic meters, and the reaction chamber is a large-volume reaction kettle.
Compared with the prior art, the utility model provides a pure lag of heat transfer, long time after reation kettle enlargies to and the shearing force weakens and leads to precursor granule easily to reunite etc. not enough. Has the advantages of ingenious structural design, high heat transfer efficiency, strong stirring shearing force and the like.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A big volume ternary cathode material precursor reation kettle which characterized in that:
comprises a closed kettle body, wherein the closed kettle body is provided with a reaction chamber;
the closed kettle body is provided with at least two feed inlets and a discharge outlet; each feed inlet and each discharge outlet are communicated with the reaction chamber;
wherein, also include a main mixing plant and at least one pair of mixing plants;
the main stirring device comprises a vertical first rotating shaft, the first rotating shaft is positioned at the geometric center of the cross section of the reaction chamber and is driven to rotate by a first driving device; a plurality of groups of first stirring blades are arranged on the first rotating shaft at intervals from top to bottom;
the auxiliary stirring device is positioned at the side part of the main stirring device, comprises a vertical second rotating shaft, is arranged in parallel with the first rotating shaft of the main stirring device, and is driven to rotate by a second driving device; a plurality of groups of second stirring blades are arranged on the second rotating shaft at intervals from top to bottom;
wherein, the outer wall of the closed kettle body is wound with a circulating heat transfer jacket, at least one group of heat transfer coil pipes are arranged in the closed kettle body, the heat transfer coil pipes are positioned on the inner wall of the closed kettle body, and a heat medium inlet and a heat medium outlet of the heat transfer coil pipes are positioned at the outer side of the closed kettle body; the pipes of the heat transfer coil are spirally stacked.
2. The large volume ternary positive electrode material precursor reaction kettle of claim 1, wherein: the first stirring paddle comprises an upper paddle, a middle paddle and a lower paddle which are parallel to each other in the vertical direction and are arranged at intervals;
each second stirring paddle is positioned between the middle layer paddle and the lower layer paddle of the first stirring paddle.
3. The large volume ternary positive electrode material precursor reaction kettle of claim 1, wherein: the first feeding hole extends into the upper part of the second stirring paddle of the auxiliary stirring device through a feeding pipeline.
4. The large volume ternary positive electrode material precursor reaction kettle of claim 1, wherein: the auxiliary stirring devices are provided with a plurality of groups, and second rotating shafts of the auxiliary stirring devices are uniformly distributed in the circumferential direction of the first rotating shaft of the main stirring device.
5. The large volume ternary positive electrode material precursor reaction kettle of claim 1, wherein: a guide cylinder is coaxially positioned in the reaction chamber, is of a cylindrical structure and is open at the upper part and the lower part; the first rotating shaft of the main stirring device is arranged in the guide shell, a descending mixed liquid channel is formed in the guide shell through rotation, the descending mixed liquid flows out to the side part through an opening at the lower part, an ascending mixed liquid channel is formed at the outer side of the guide shell, and the ascending mixed liquid flows back to the guide shell through an opening at the upper part, so that a circulating channel of the mixed liquid is formed.
6. The large volume ternary positive electrode material precursor reaction kettle of claim 1, wherein: and a second rotating shaft of the auxiliary stirring device is positioned in the guide cylinder.
7. The large volume ternary positive electrode material precursor reaction kettle of claim 5, wherein: the wall of the guide shell is of a hollow structure.
8. The large volume ternary positive electrode material precursor reaction kettle of claim 1, wherein: the inner wall of the closed kettle body is provided with a baffle structure, the baffle structure is provided with a hollow cavity, and the heat transfer coil is fixedly arranged in the hollow cavity.
9. The large volume ternary positive electrode material precursor reaction kettle of claim 1, wherein: the heat transfer coil pipes are provided with a plurality of groups, and the heat transfer coil pipes of each group are uniformly distributed on the inner wall of the closed kettle body in the circumferential direction.
10. The large volume ternary positive electrode material precursor reaction kettle of claim 5, wherein: the heat transfer coil is arranged in the guide shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920919275.3U CN211070054U (en) | 2019-06-18 | 2019-06-18 | Large-volume ternary cathode material precursor reaction kettle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920919275.3U CN211070054U (en) | 2019-06-18 | 2019-06-18 | Large-volume ternary cathode material precursor reaction kettle |
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| CN211070054U true CN211070054U (en) | 2020-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193332A (en) * | 2019-06-18 | 2019-09-03 | 南通金通储能动力新材料有限公司 | A kind of big volume ternary anode material precursor reaction kettle |
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2019
- 2019-06-18 CN CN201920919275.3U patent/CN211070054U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193332A (en) * | 2019-06-18 | 2019-09-03 | 南通金通储能动力新材料有限公司 | A kind of big volume ternary anode material precursor reaction kettle |
| CN110193332B (en) * | 2019-06-18 | 2024-05-10 | 南通金通储能动力新材料有限公司 | Large-volume ternary anode material precursor reaction kettle |
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