Lithium precipitation reactor capable of being continuously operated
By designing a continuously operating lithium deposition reactor, and adopting a ring feed distributor and a three-stage stirring paddle structure, the problems of low production efficiency and uneven material mixing in traditional lithium deposition reactors have been solved, achieving efficient and uniform lithium carbonate production and improving product quality.
Patent Information
- Application Number
- CN202422605025.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-10-28
AI Technical Summary
Traditional lithium precipitation reactors suffer from low production efficiency, uneven material mixing, easy material short circuits, and difficulty in controlling particle size. In particular, explosive nucleation can easily occur in the early stages of high-concentration reactions, affecting product performance.
A continuously operating lithium deposition reactor is designed, employing a ring-shaped feed distributor and a three-stage stirring paddle structure to ensure uniform material entry into the reactor. The reaction is promoted by a stirring device, and a discharge baffle is set to prevent material short-circuiting, thereby achieving full reaction and uniform distribution of materials.
It significantly improves production efficiency, shortens reaction time, and enhances product purity and particle size distribution, meeting market demand for high-quality lithium carbonate.
Smart Images
Figure CN223464818U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of chemical equipment, concretely relates to a lithium precipitation reactor of continuous operation. BACKGROUND
[0002] With the increasing attention to renewable energy and environmental protection technology in the world, as the key components of new energy vehicles, energy storage systems and portable electronic devices, the market demand of lithium ion batteries presents explosive growth. Lithium carbonate, as one of the main raw materials of lithium ion battery cathode material, the improvement of production technology and the improvement of production efficiency become the focus of the industry. Especially with the vigorous development of new energy vehicle industry, the demand for high-quality lithium carbonate increases sharply, and higher requirements are put forward for the optimization of lithium carbonate production process.
[0003] In the production process of lithium carbonate, the lithium precipitation process plays a crucial role, which is directly related to the key quality indicators such as purity, particle size distribution and morphology of the final product. However, the traditional lithium precipitation reactor adopts intermittent operation mode. Although this mode can control the reaction conditions to a certain extent, it has the problems of low production efficiency, uneven mixing of materials, easy to cause material short circuit and difficult to control particle size, etc. Especially when the material concentration is high at the beginning of the reaction, explosive nucleation phenomenon often occurs, which makes the nucleation rate much higher than the particle growth rate, eventually leading to the generation of small lithium carbonate particles, affecting the overall performance and market competitiveness of the product.
[0004] Therefore, there is an urgent need in the market for an innovative lithium precipitation reactor that can be continuously operated to overcome the shortcomings of the prior art, realize the continuous, efficient and quality of lithium carbonate production, and meet the growing market demand. INVENTION CONTENTS
[0005] In view of the problems existing in the prior art, the lithium precipitation reactor provided by the utility model can be continuously operated to solve the problems of low production efficiency, insufficient mixing of materials and easy to cause material short circuit existing in the prior lithium precipitation reactor. In order to achieve the above purpose, the utility model provides the following technical scheme:
[0006] A lithium precipitation reactor capable of continuous operation, comprising a cylinder and a first feeding device, a second feeding device and a stirring device arranged on the cylinder; the first feeding device is used for feeding the first material into the cylinder, and the second feeding device is used for feeding the second material into the cylinder; the stirring device is used for stirring the first material and the second material in the cylinder, so that the reaction material formed after the reaction of the first material and the second material flows out from the side wall outlet formed on the side wall of the cylinder.
[0007] Further, the first feeding device is a lithium chloride feeding device; the lithium chloride feeding device comprises a lithium chloride feeding pipe, a lithium chloride annular distributor and a lithium chloride feeding vertical pipe which are sequentially communicated; the top end of the lithium chloride feeding pipe is provided with a first feeding port, the lithium chloride annular distributor is provided with a first spraying hole, and the bottom end of the lithium chloride feeding vertical pipe is provided with a first discharging port; the lithium chloride feeding pipe and the cylinder body are fixedly connected.
[0008] Further, the second feeding device is a sodium carbonate feeding device; the sodium carbonate feeding device comprises a sodium carbonate feeding pipe and a sodium carbonate annular distributor; the top end of the sodium carbonate feeding pipe is provided with a second feeding port, and the sodium carbonate annular distributor is provided with a second spraying hole; the sodium carbonate feeding pipe and the cylinder body are fixedly connected.
[0009] Further, the stirring device comprises a stirring shaft, and a first-stage stirring paddle, a second-stage stirring paddle and a third-stage stirring paddle are sequentially mounted on the stirring shaft from top to bottom, and the stirring directions of the first-stage stirring paddle, the second-stage stirring paddle and the third-stage stirring paddle are opposite.
[0010] Further, the driving device comprises a driving motor fixedly connected to the cylinder body, and an output shaft of the driving motor is connected with the stirring shaft.
[0011] Further, a side wall discharging baffle is arranged on the inner side wall of the cylinder body, and the side wall discharging baffle corresponds to the side wall discharging port; the side wall discharging baffle is in a semicircular tubular shape.
[0012] Further, a side wall baffle is further arranged on the inner side wall of the cylinder body, and the side wall baffle is arranged opposite to the side wall discharging baffle.
[0013] Further, a bottom discharging port is arranged at the bottom of the cylinder body.
[0014] Further, a groove baffle is arranged on the bottom discharging port, and the groove baffle is fixedly connected with the cylinder body; and an avoiding port for facilitating the outflow of reaction materials is arranged on the groove baffle.
[0015] Further, the cylinder body comprises an upper head, a cylinder section and a lower head which are sequentially connected, and the upper head and the cylinder section and the cylinder section and the lower head are sealingly connected.
[0016] The beneficial effects of the lithium precipitation reactor are as follows:
[0017] 1. The lithium precipitation reactor can be continuously operated, compared with the traditional intermittent operation of the lithium precipitation equipment, through continuous operation, the downtime and preparation time in the production process are greatly reduced, and the production efficiency and capacity are significantly improved. This not only helps to meet the market demand for rapid growth of lithium carbonate, but also reduces the production cost of unit product.
[0018] 2. The lithium precipitation reactor of the present application can be continuously operated, and the lithium chloride annular distributor and the sodium carbonate annular distributor with spray holes are arranged, so that the materials enter the reactor in a more uniform and smaller way, the contact area between the reactants is increased, and the rapid reaction of lithium chloride and sodium carbonate is promoted. This not only shortens the reaction time, but also improves the reaction efficiency, and further improves the production efficiency.
[0019] 3. The lithium precipitation reactor of the present application can be continuously operated, and the special discharge baffle structure is adopted, so that the short circuit phenomenon of the materials in the reactor is effectively avoided, the sufficient residence and reaction of the materials in the reactor are ensured, and the purity and uniformity of the product are improved. At the same time, the design of the three-stage stirring paddle promotes the uniform distribution and full mixing of the materials in the reactor, avoids the problems of uneven particle size or excessive nucleation speed caused by excessive local concentration, and improves the particle size distribution and morphology quality of the final product. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is the overall structure schematic view of the lithium precipitation reactor of the present application which can be continuously operated;
[0021] In the drawings: 11, upper head; 12, cylinder section; 13, lower head; 21, lithium chloride feeding pipe; 22, lithium chloride annular distributor; 23, lithium chloride feeding vertical pipe; 31, sodium carbonate feeding pipe; 32, sodium carbonate annular distributor; 41, primary stirring paddle; 42, secondary stirring paddle; 43, tertiary stirring paddle; 44, stirring shaft; 5, driving device; 6, side wall discharge port; 7, side wall discharge baffle; 8, side wall baffle; 9, bottom discharge port; 10, groove baffle. DETAILED DESCRIPTION
[0022] The present application will be further described in detail below in combination with the drawings and specific embodiments, but the present application is not limited to the following embodiments.
[0023] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0024] In the description of the utility model, "first feature", "second feature" can include one or more features.
[0025] In the description of the utility model, "multiple" means two or more.
[0026] In the description of the utility model, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them.
[0027] In the description of the utility model, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.
[0028] In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0029] Embodiment one:
[0030] See attached Figure 1 The utility model discloses a continuous operation's lithium precipitation reactor mainly suitable for lithium carbonate process lithium precipitation section, solves material short circuit, material residence time is not enough, material mixes not fully etc. Lithium precipitation reactor includes cylinder and first feeding device, second feeding device and stirring device set on the cylinder. Among them, the cylinder can be used for lithium precipitation reaction, the first feeding device can be used to send the first material into the cylinder, and the second feeding device can be used to send the second material into the cylinder, for example, the first feeding device can be lithium chloride feeding device, and the second feeding device can be sodium carbonate feeding device, and lithium chloride feeding device and sodium carbonate feeding device send lithium chloride solution and sodium carbonate solution into the cylinder respectively, and the stirring device can be used to stir the first material and the second material in the cylinder, so that the reaction material formed after the first material and the second material react flows out from the side wall discharge port 6 formed on the side wall of the cylinder.
[0031] Specifically, the lithium chloride feeding device comprises a lithium chloride feeding pipe 21, a lithium chloride annular distributor 22 and a lithium chloride feeding vertical pipe 23 connected in sequence. The lithium chloride feeding pipe 21 is fixedly connected with the cylinder body. The top end of the lithium chloride feeding pipe 21 is provided with a first feeding port. The lithium chloride annular distributor 22 is provided with first injection holes. The bottom end of the lithium chloride feeding vertical pipe 23 is provided with a first discharging port. The lithium chloride annular distributor 22 is arranged above the lithium precipitation reactor. The material sprayed from the first injection holes falls into the solution in the reactor through the gas phase space. In addition to the first injection holes, the lithium chloride annular distributor 22 is also provided with a plurality of vertical lithium chloride feeding vertical pipes 23 inserted below the solution surface of the reactor to further improve the uniformity of feeding. In operation, the lithium chloride solution flows into the lithium precipitation reactor from the lithium chloride feeding pipe 21, is sprayed onto the upper surface of the solution from the gas phase space above the solution surface of the lithium precipitation reactor through the first injection holes of the lithium chloride annular distributor 22, and part of the lithium chloride solution directly flows into the lithium precipitation reactor below the solution surface through the lithium chloride feeding vertical pipes 23 connected with the lithium chloride annular distributor 22.
[0032] Specifically, the sodium carbonate feeding device comprises a sodium carbonate feeding pipe 31 and a sodium carbonate annular distributor 32. The top end of the sodium carbonate feeding pipe 31 is provided with a second feeding port. The sodium carbonate annular distributor 32 is provided with second injection holes. The sodium carbonate feeding pipe 31 is fixedly connected with the cylinder body. The sodium carbonate annular distributor 32 is arranged in the middle of the lithium precipitation reactor below the solution surface of the reactor and between the primary stirring paddle 41 and the secondary stirring paddle 42, and feeds through the second injection holes of the sodium carbonate annular distributor 32. In operation, the sodium carbonate solution flows into the lithium precipitation reactor from the sodium carbonate feeding pipe 31, is sprayed below the solution surface of the lithium precipitation reactor from the gas phase space through the second injection holes of the sodium carbonate annular distributor 32.
[0033] Specifically, the stirring device comprises a stirring shaft 44, and a first stirring paddle 41, a second stirring paddle 42 and a third stirring paddle 43 are sequentially arranged on the stirring shaft 44 from top to bottom, and the stirring directions of the first stirring paddle 41, the second stirring paddle 42 and the third stirring paddle 43 are opposite. Meanwhile, the stirring device further comprises a driving device 5, which comprises a driving motor fixedly connected to the barrel, and an output shaft of the driving motor is connected to the stirring shaft 44. The driving device is used to drive the stirring shaft 44 to rotate, so that the first stirring paddle 41, the second stirring paddle 42 and the third stirring paddle 43 can uniformly stir the lithium chloride and the sodium carbonate in the lithium precipitation reactor, and make the lithium chloride and the sodium carbonate rapidly react. Since the stirring directions of the first stirring paddle 41, the second stirring paddle 42 and the third stirring paddle 43 are opposite, when the stirring device is in operation, preferably, the first stirring paddle 41 and the second stirring paddle 42 push the solution in the lithium precipitation reactor to flow downward, and the third stirring paddle 43 pushes the solution in the lithium precipitation reactor to flow upward, so that the problem of uneven distribution of materials during the stirring operation can be solved, the turbulent flow of the solution in the reactor is strengthened, the transmission, heat transfer and mass transfer of the materials in the reactor are intensified, and the lithium chloride and the sodium carbonate are rapidly reacted. In addition, through the rotation of the third stirring paddle 43 at the bottom of the lithium precipitation reactor, the materials at the bottom of the container are driven to flow upward, so that the lithium carbonate particles are prevented from depositing at the bottom of the container.
[0034] After the reaction is completed, the lithium carbonate particles obtained together with the liquid flow out of the lithium precipitation reactor through a side wall discharge port 6. A side wall discharge baffle 7 is further arranged on the inner side wall of the barrel, and the side wall discharge baffle 7 corresponds to the side wall discharge port 6. The side wall discharge baffle 7 can prevent the lithium chloride and the sodium carbonate from flowing out of the lithium precipitation reactor through the side wall discharge port 6 before being fully reacted, so as to ensure the residence time of the materials. In an embodiment of the present application, the side wall discharge baffle 7 is in the shape of a semicircular tube.
[0035] In an embodiment of the present application, a side wall baffle 8 is further arranged on the inner side wall of the barrel, and the side wall baffle 8 is arranged opposite to the side wall discharge baffle 7. The side wall baffle 8 can prevent vortexes from occurring in the lithium precipitation reactor.
[0036] In an embodiment of the present application, a bottom discharge port 9 is arranged at the bottom of the barrel, and a groove baffle 10 is arranged on the bottom discharge port 9. The groove baffle 10 is fixedly connected to the barrel, and can be used to prevent the bottom agitation sediment from blocking the bottom discharge port 9. An avoiding port is arranged on the groove baffle 10, which can make the lithium carbonate particles smoothly flow out of the lithium precipitation reactor in an emergency condition.
[0037] In an embodiment of the present application, the barrel comprises an upper elliptical head 11, a barrel section 12 and a lower elliptical head 13 which are sequentially connected. The upper elliptical head 11 and the barrel section 12, and the barrel section 12 and the lower elliptical head 13 are sealingly connected, and together constitute the barrel for lithium precipitation reaction.
[0038] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.
Claims
1. A lithium sink reactor that can be operated continuously, characterized in that: The cylinder body and the first feeding device, the second feeding device and the stirring device arranged on the cylinder body; the first feeding device is used for feeding the first material into the cylinder body, the second feeding device is used for feeding the second material into the cylinder body; the stirring device is used for stirring the first material and the second material in the cylinder body, so that the reaction material formed after the first material and the second material react flows out from the side wall discharge port (6) opened on the side wall of the cylinder body; The first feeding device is a lithium chloride feeding device; the lithium chloride feeding device comprises a lithium chloride feeding pipe (21), a lithium chloride annular distributor (22) and a lithium chloride feeding vertical pipe (23) which are sequentially communicated; the top end of the lithium chloride feeding pipe (21) is provided with a first feeding port, the lithium chloride annular distributor (22) is provided with a first injection hole, and the bottom end of the lithium chloride feeding vertical pipe (23) is provided with a first discharge port; the lithium chloride feeding pipe (21) is fixedly connected with the cylinder body. The second feeding device is a sodium carbonate feeding device; the sodium carbonate feeding device comprises a sodium carbonate feeding pipe (31) and a sodium carbonate annular distributor (32); the top end of the sodium carbonate feeding pipe (31) is provided with a second feeding port, and the sodium carbonate annular distributor (32) is provided with a second injection hole; the sodium carbonate feeding pipe (31) is fixedly connected with the cylinder body.
2. The continuously operable lithiation reactor of claim 1, wherein: The stirring device comprises a stirring shaft (44), and a first-stage stirring paddle (41), a second-stage stirring paddle (42) and a third-stage stirring paddle (43) are sequentially mounted on the stirring shaft (44) from top to bottom; the first-stage stirring paddle (41), the second-stage stirring paddle (42) and the third-stage stirring paddle (43) have opposite stirring directions.
3. The continuously operable lithiation reactor of claim 2, wherein: Further comprising a driving device (5) comprising a driving motor fixedly connected with the cylinder body, and an output shaft of the driving motor is connected with the stirring shaft (44).
4. The continuously operable lithiation reactor of claim 1, wherein: A side wall discharge baffle (7) is arranged on the inner side wall of the cylinder body, and the side wall discharge baffle (7) corresponds to the side wall discharge port (6); the side wall discharge baffle (7) is in a semicircular tubular shape.
5. The continuously operable lithiation reactor of claim 4, wherein: A side wall baffle (8) is further arranged on the inner side wall of the cylinder body, and the side wall baffle (8) is oppositely arranged with the side wall discharge baffle (7).
6. The continuously operable lithiation reactor of claim 1, wherein: A bottom discharge port (9) is arranged at the bottom of the cylinder body.
7. The continuously operable lithiation reactor of claim 6, wherein: A groove baffle (10) is arranged on the bottom discharge port (9), and the groove baffle (10) is fixedly connected with the cylinder body; the groove baffle (10) is provided with an avoiding port facilitating the outflow of the reaction material.
8. The continuously operable lithiation reactor of claim 1, wherein: The cylinder body comprises an upper head (11), a cylinder section (12) and a lower head (13) which are sequentially connected, and the upper head (11) and the cylinder section (12) and the cylinder section (12) and the lower head (13) are sealingly connected.