Reactor for lithium hexafluorophosphate

Abstract

The utility model relates to the technical field of reaction equipment, in particular to a reactor for lithium hexafluorophosphate, which comprises a reaction container, a stirrer, an air inlet pipe, a drain valve and a feeding structure, the feeding structure is composed of a plurality of discharging bodies arranged at the top of the reaction cavity of the reaction container in a sliding mode, a feeding pipe used for supplying materials to the discharging bodies and a driving device used for controlling the discharging bodies to move, and a plurality of discharging openings are formed in the bottoms of the discharging bodies; when the feeding pipe supplies materials to the discharging body, the discharging body is controlled by the driving device to reciprocate in the reaction cavity, the materials are uniformly added into the reaction cavity, and the uniformity of the materials entering the reaction cavity can be improved through the movably arranged discharging body, so that the production efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction equipment, in particular to a reactor for lithium hexafluorophosphate. Background Art

[0002] Lithium hexafluorophosphate is one of the main raw materials of lithium-ion battery electrolytes. Due to its good ionic conductivity and electrochemical stability, it is the most commonly used electrolyte lithium salt at present.

[0003] At present, the synthesis methods of lithium hexafluorophosphate include gas-solid method, solvent method, ion exchange method, etc. Among them, the solvent method mainly uses anhydrous hydrogen fluoride as the solvent, lithium fluoride as the solute, and then introduces phosphorus pentafluoride gas to obtain the mother liquor of lithium hexafluorophosphate. The solvent method is one of the main methods for industrial production at present.

[0004] In the process of producing lithium hexafluorophosphate, the reactants need to use a reactor as a carrier for reaction. However, at present, when lithium fluoride is added to hydrogen fluoride solvent in the reactor, due to the single feeding method, the time for the two to fuse evenly increases. Therefore, the fusion efficiency of the two is reduced, thus affecting the production efficiency of lithium hexafluorophosphate. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a reactor for lithium hexafluorophosphate, aiming to solve the problems presented in the above background art.

[0006] The technical solution of the utility model is realized as follows: A reactor for lithium hexafluorophosphate, comprising:

[0007] A reaction vessel having a reaction chamber;

[0008] A stirrer having a stirring end that can move in the reaction chamber;

[0009] An air inlet pipe provided on the reaction vessel;

[0010] A drain valve formed at the bottom of the reaction vessel and capable of controlling the discharge of the materials in the reaction chamber,

[0011] A feeding structure provided at the top of the reaction chamber, characterized in that: the feeding structure is composed of a plurality of discharging bodies slidably provided at the top of the reaction chamber, a feeding pipe for feeding materials to the discharging bodies, and a driving device for controlling the movement of the discharging bodies. A plurality of discharging ports are formed at the bottom of the discharging bodies;

[0012] When the feeding pipe feeds materials to the discharging bodies, the discharging bodies are controlled by the driving device to reciprocate in the reaction chamber and uniformly add the materials into the reaction chamber.

[0013] Preferably: The driving device includes:

[0014] A rack is installed on the side of each adjacent discharging body;

[0015] A transmission gear is rotatably connected to the top of the reaction chamber and meshes with each rack;

[0016] Among them, any discharging body can be controlled by a driver to reciprocate.

[0017] Preferably: The discharging body includes:

[0018] A main body having a feeding chamber communicating with a feeding pipe;

[0019] A material scattering structure is rotatably connected to the feeding chamber through a rotating shaft and is located at the discharging port;

[0020] A driven gear is installed on the rotating shaft and is located at the top of the main body;

[0021] A transmission rack is installed in the reaction chamber and meshes with each driven gear;

[0022] When the main body moves, the driven gear is driven by the transmission rack to rotate and the material scattering structure rotates synchronously.

[0023] Preferably: The material scattering structure includes:

[0024] An installation body is connected to the rotating shaft and is coaxially arranged with the discharging port;

[0025] A plurality of material scattering blades are fixed on the circumferential side wall of the installation body and are circumferentially equidistantly spaced with the installation body as the reference.

[0026] Preferably: The material scattering blades are inclined downward from the connection with the installation body to the other end.

[0027] Advantages of the present utility model:

[0028] 1. The feeding structure provided at the top of the reaction chamber in the present utility model is composed of several discharging bodies. During discharging, the discharging bodies are controlled by a driver to reciprocate at the top of the reaction chamber and uniformly add materials into the reaction chamber, thereby shortening the fusion time of the solvent and the solute and ensuring the production efficiency of lithium hexafluorophosphate.

[0029] 2. In order to further make the material distribution more uniform, the present utility model provides a material scattering structure at the discharging port of the discharging body. By using the material scattering structure, the materials discharged from the discharging port can enter the reaction chamber more dispersedly, further improving the uniformity of the material distribution.

[0030] In addition, other advantages of the present utility model will be shown in the embodiment part of the present utility model, making the beneficial effects of the present utility model more significant. Description of the Drawings

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 Structural schematic diagram of Specific Embodiment 1 of the present invention;

[0033] Figure 2 For Figure 1 Cross-sectional view;

[0034] Figure 3 For Figure 2 A-A cross-sectional view in;

[0035] Figure 4 For Figure 3 B-B cross-sectional view in;

[0036] Figure 5 Structural schematic diagram of Specific Embodiment 2 of the present invention;

[0037] Figure 6 For Figure 5 C-C cross-sectional view in. Specific implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] Embodiment 1

[0040] As Figures 1-4 shown, the present invention discloses a reactor for lithium hexafluorophosphate, including:

[0041] Reaction vessel 10, having a reaction chamber 100;

[0042] Stirrer 11, having a stirring end that can move within the reaction chamber 100;

[0043] Inlet pipe 12, provided on the reaction vessel 10;

[0044] Drain valve 13, formed at the bottom of the reaction vessel 10 and capable of controlling the discharge of the material in the reaction chamber 100,

[0045] The feeding structure is provided at the top of the reaction chamber 100. The feeding structure is composed of a plurality of discharging bodies 20 slidably provided at the top of the reaction chamber 100, a feeding pipe 21 for feeding the discharging bodies 20, and a driving device for controlling the movement of the discharging bodies 20. A plurality of discharging ports 20a are formed at the bottom of the discharging body 20;

[0046] When the feeding pipe 21 feeds the discharging body 20, the discharging body 20 is controlled by the driving device to reciprocate in the reaction chamber 100, and the material is evenly added to the reaction chamber 100.

[0047] In this embodiment: The driving device includes:

[0048] A rack 30, installed on the side of each adjacent discharging body 20;

[0049] A transmission gear 31, rotatably connected to the top of the reaction chamber 100 and meshing with each rack 30;

[0050] Among them, any discharging body 20 can be controlled by a driver 32 (cylinder) to reciprocate.

[0051] In this embodiment, a slide rail 40 is installed on the top of the reaction chamber 100, and a slider 41 slidably connected to the slide rail 40 is provided on the top of the discharging body 20, so as to realize the sliding connection between the discharging body 20 and the top of the reaction chamber 100.

[0052] The principle of this embodiment is as follows: Anhydrous hydrogen fluoride and lithium fluoride are added into the discharging body through the feeding pipe. Under the pneumatic action of the driver, the discharging body reciprocates at the top of the reaction chamber and adjusts the position of the discharging port, so as to evenly add the material into the reaction chamber. After the hydrogen fluoride and lithium fluoride are mixed, phosphorus pentafluoride gas is introduced into the reaction chamber through the inlet pipe, so as to obtain lithium hexafluorophosphate and complete the production.

[0053] In this embodiment, the discharging bodies are controlled to move synchronously and reciprocate above the reaction chamber, which can make the material added to the reaction chamber more uniform, thereby improving the mixing efficiency of the material and ensuring the production efficiency of lithium hexafluorophosphate.

[0054] Embodiment 2, the difference from the embodiment is that

[0055] As Figures 5-6 shown, in this embodiment: The discharging body 20 includes:

[0056] A main body 50, having a feeding cavity 500 communicated with the feeding pipe 21;

[0057] A material scattering structure, rotatably connected to the feeding cavity 500 through a rotating shaft 51 and located at the discharging port 20a;

[0058] The driven gear 52 is installed on the rotating shaft 51 and is located at the top of the main body 50;

[0059] The transmission rack 53 is installed in the reaction chamber 100. Both ends of the transmission rack 50 are connected to the chamber wall of the reaction chamber 100 and mesh with each driven gear 52;

[0060] When the main body 50 moves, the driven gear 52 is driven by the transmission rack 53 to rotate and makes the material scattering structure rotate synchronously.

[0061] In this embodiment: The material scattering structure includes:

[0062] The installation body 60 is connected to the rotating shaft 51 and is coaxially arranged with the discharge port;

[0063] A plurality of material scattering blades 61 are fixed on the circumferential side wall of the installation body 60 and are circumferentially equidistantly spaced with the installation body 60 as the reference.

[0064] In this embodiment: The material scattering blade 61 is inclined downward from the connection with the installation body 60 to the other end.

[0065] Reference Figures 5-6 , in order to further improve the uniformity of material dispersion in this embodiment, a material scattering structure is provided at the discharge port. When the discharge body moves, the driven gear provided at the top of the discharge body moves on the transmission rack and is driven to rotate, and drives the material scattering structure to rotate. When the material is discharged from the discharge port, the material in contact with the material scattering blades of the material scattering structure can be dispersed to various positions of the reaction chamber by the centrifugal force generated during the movement of the material scattering blades, thereby further improving the uniformity of material dispersion.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reactor for lithium hexafluorophosphate, comprising: A reaction container (10) having a reaction chamber (100); A stirrer (11) having a stirring end that can move within the reaction chamber (100); An air inlet pipe (12) is arranged on the reaction container (10); The drain valve (13) is formed at the bottom of the reaction container (10) and is capable of controlling the discharge of materials in the reaction chamber (100). A feeding structure is arranged at the top of the reaction chamber (100), characterized in that: the feeding structure is composed of a plurality of discharge bodies (20) slidably arranged at the top of the reaction chamber (100), a feeding pipe (21) for feeding materials to the discharge bodies (20), and a driving device for controlling the movement of the discharge bodies (20), and a plurality of discharge ports (20a) are formed at the bottom of the discharge body (20); When the feed pipe (21) supplies material to the discharge body (20), the discharge body (20) is controlled by the driving device to move back and forth in the reaction chamber (100), and the material is evenly added into the reaction chamber (100).

2. A reactor for lithium hexafluorophosphate according to claim 1, characterized in that: The driving device comprises: A rack (30) is installed on the side of each adjacent discharging body (20); A transmission gear (31) is rotatably connected to the top of the reaction chamber (100) and meshes with each rack (30); Wherein, any discharging body (20) can be controlled by a driver (32) to move back and forth.

3. A reactor for lithium hexafluorophosphate according to claim 2, characterized in that: The discharging body (20) comprises: A body (50) having a feed cavity (500) communicating with a feed pipe (21); A bulk material structure is rotatably connected to the feed chamber (500) via a rotating shaft (51) and is located at the discharge port (20a); A driven gear (52) is mounted on the rotating shaft (51) and is located at the top of the body (50); A transmission rack (53) is installed in the reaction chamber (100) and meshes with each driven gear (52); When the body (50) moves, the driven gear (52) is driven by the transmission rack (53) to rotate and causes the bulk material structure to rotate synchronously.

4. A reactor for lithium hexafluorophosphate according to claim 3, characterized in that: The bulk material structure comprises: The mounting body (60) is connected to the rotating shaft (51) and is coaxially arranged with the discharge port; A plurality of bulking blades (61) are fixed to the circumferential side wall of the mounting body (60) and are arranged at equal intervals in the quasi-circumferential direction of the mounting body (60).

5. A reactor for lithium hexafluorophosphate according to claim 4, characterized in that: The bulking blade (61) is arranged to be inclined downward from the connection with the mounting body (60) to the other end.

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