Continuous lithium hexafluorophosphate synthesis reactor

Abstract

The utility model provides a continuous lithium hexafluorophosphate synthesis reactor, which relates to the technical field of lithium hexafluorophosphate production, and comprises a first sub-tank, a second sub-tank and a storage tank, the top of the storage tank is provided with the second sub-tank, the storage tank is in the shape of a circular truncated cone, and the top of the second sub-tank is provided with the first sub-tank. A driving motor is installed in the middle of the top end of the first sub-tank, stirring blades are installed at the bottom end of the driving motor, a first feeding port is formed in one side of the top of the first sub-tank, and a second feeding port is formed in the other side of the top of the first sub-tank; according to the continuous lithium hexafluorophosphate synthesis reactor, through cooperative work of the unique tank body structure, the buffer structure and the continuous tank body, efficient, stable and continuously operable equipment is provided for synthesis of lithium hexafluorophosphate.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium hexafluorophosphate production technical field especially relates to a continuous lithium hexafluorophosphate synthesis reactor. BACKGROUND

[0002] With the rapid development of global new energy industry, under the background of actively promoting energy transformation and sustainable development strategy in the world, the new energy field is experiencing unprecedented changes and expansion. Lithium ion battery has become the main energy storage equipment in various new energy application scenarios due to its high energy density, long cycle life, low self-discharge rate and other obvious advantages. From the large-scale popularization of electric vehicles, to the continuous update and iteration of portable electronic devices, to the energy storage application in renewable energy power generation systems, lithium ion batteries are everywhere, and the market demand is showing a sharp upward trend.

[0003] Lithium hexafluorophosphate, as a key electrolyte component of lithium ion battery electrolyte, occupies a core position in the whole lithium ion battery system and has irreplaceable importance. It directly participates in the transmission process of lithium ions between the positive and negative electrodes, and plays a decisive role in the key indicators such as the charge and discharge performance, electrochemical stability and safety of the battery. The quality of lithium hexafluorophosphate, such as purity, impurity content and particle size distribution, is directly related to the internal resistance, capacity retention rate, cycle life and performance in different temperature environments of lithium ion batteries. The yield of lithium hexafluorophosphate has become one of the key bottlenecks restricting the large-scale development of lithium ion battery industry. If the supply of lithium hexafluorophosphate cannot meet the growing demand, it will lead to the limitation of lithium ion battery production, and then affect the production progress of electric vehicles, the new product launch of electronic devices and the construction and operation of renewable energy storage projects, and finally hinder the development process of the whole new energy industry.

[0004] At present, the synthesis equipment can synthesize lithium hexafluorophosphate, but there are the following problems: 1. The existing synthesis method mainly relies on stirring, but simple stirring method is difficult to break the agglomeration of raw materials, and cannot ensure the uniform dispersion of two key raw materials in the whole reaction space, causing large local reaction difference, affecting the reaction rate and product quality stability; 2. The material flow path and residence time are not well controlled, the material is not fully reacted in the reactor, and local reaction abnormalities are easy to occur, resulting in unstable product quality and long production cycle, increasing production cost, so a continuous lithium hexafluorophosphate synthesis reactor is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art, and provides a continuous lithium hexafluorophosphate synthesis reactor.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a continuous lithium hexafluorophosphate synthetic reactor, including first sub -tank, second sub -tank and storage tank, the top of storage tank is installed with second sub -tank, the shape of storage tank is circular truncated cone, the top of second sub -tank is installed with first sub -tank, the middle part of first sub -tank top is installed with drive motor, the bottom of drive motor is installed with stirring fan blade, one side of first sub -tank top is equipped with first feed inlet, the other side of first sub -tank top is equipped with second feed inlet.

[0007] Preferably, the bottom of the first sub-tank is connected with a bottom disc, the middle part of the bottom end of the bottom disc is installed with a turnover piece, one side of the bottom of the first sub-tank is installed with a rotary motor group, and the output end of the rotary motor group penetrates the middle part of the turnover piece.

[0008] Preferably, the inner wall of the second sub-tank is provided with a ring groove, and the middle part of the inner bottom end of the second sub-tank is provided with a discharging port.

[0009] Preferably, the second sub-tank is connected with a clamping plate inside, and the clamping plate is semicircular in shape.

[0010] Preferably, the clamping plates in the second sub-tank are arranged in a staggered stepped manner, and gaps are left between adjacent clamping plates.

[0011] Preferably, the outer side of the clamping plate is provided with a clamping groove, and the side close to the clamping groove of the clamping plate is connected with an assembled ladder.

[0012] Preferably, the top of the assembled ladder is provided with a clamping block, and the bottom of the assembled ladder is provided with a bottom clamping groove, and the clamping block and the bottom clamping groove are mutually matched.

[0013] Beneficial effects

[0014] In the utility model, the continuous lithium hexafluorophosphate synthetic reactor provides an efficient, stable, and continuously operating device for the synthesis of lithium hexafluorophosphate through the cooperative work of the unique tank structure, buffer structure, and continuous tank. From the feeding and mixing of raw materials to the transfer and reaction of materials between different tanks and the storage of the final product, each link is carefully designed to optimize the synthesis process of lithium hexafluorophosphate and improve product quality and production efficiency.

[0015] The utility model discloses, through the step -like arrangement of the assembled ladder platform, material will along the surface of these ladder platform slowly flow down, has increased the residence time of material in the second sub -tank, has provided more sufficient time and space for the reaction between lithium fluoride and phosphorus pentafluoride, and material is when passing every assembled ladder platform, will constantly adjust the distribution state of self, makes two raw materials can further mix and react on different height and position, promotes the progress of chemical reaction. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structural drawing of the utility model;

[0017] Figure 2 It is the internal structure drawing of the first sub -tank of the utility model;

[0018] Figure 3 It is the internal structure drawing of the second sub -tank of the utility model;

[0019] Figure 4 It is the internal component mounting structure schematic drawing of the second sub -tank of the utility model;

[0020] Figure 5 It is the assembled ladder platform mounting structure drawing of the utility model.

[0021] Legend:

[0022] 1, the first sub -tank;2, the second sub -tank;3, the storage tank;4, drive motor;5, first feed inlet;6, second feed inlet;7, stirring fan blade;8, bottom disc;9, turnover piece;10, rotary motor group;11, circle groove;12, discharge port;13, assembled ladder platform;14, clamping plate;15, clamping groove;16, bottom groove;17, clamping block;18, convex edge. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following further describes the utility model in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the utility model.

[0024] The specific embodiments of the utility model are described below in combination with the drawings. Specific embodiment one:

[0026] Reference Figures 1-5The utility model provides a continuous lithium hexafluorophosphate synthesis reactor, including first sub -tank 1, second sub -tank 2 and storage tank 3, the top of storage tank 3 is equipped with second sub -tank 2, the shape of storage tank 3 is circular truncated cone, the top of second sub -tank 2 is equipped with first sub -tank 1, and the middle part of first sub -tank 1 top end is equipped with drive motor 4, and the bottom end of drive motor 4 is equipped with stirring fan blade 7, one side of first sub -tank 1 top is equipped with first feed inlet 5, and the other side of first sub -tank 1 top is equipped with second feed inlet 6, and the bottom of first sub -tank 1 is connected with bottom disc 8, the middle part of bottom disc 8 bottom end is equipped with turnover piece 9, and one side of first sub -tank 1 bottom is equipped with rotary motor group 10, and the output end of rotary motor group 10 penetrates the middle part of turnover piece 9.

[0027] In the equipment, the whole reactor is composed of first sub -tank 1, second sub -tank 2 and storage tank 3, the storage tank 3 is used to store the final obtained reaction material, the raw material of lithium hexafluorophosphate is entered from first feed inlet 5 and second feed inlet 6 respectively, drive motor 4 can control stirring fan blade 7 to uniformly stir the mixture, after stirring, the output end is driven to overturn turnover piece 9 by rotary motor group 10, and turnover piece 9 is in vertical state after overturning, so that the mouth at the bottom leaks, and the material in first sub -tank 1 falls from the mouth leaked by turnover piece 9 and sequentially enters second sub -tank 2 at the bottom.

[0028] The inner wall of second sub -tank 2 is provided with circle groove 11, the middle part of the bottom end in second sub -tank 2 is provided with discharge port 12, the inside of second sub -tank 2 is connected with clamping plate 14, the shape of clamping plate 14 is semicircular, the clamping plate 14 in second sub -tank 2 is arranged in staggered stepped form, and there is a gap between adjacent clamping plate 14, the outside of clamping plate 14 is provided with clamping groove 15, one side of clamping plate 14 close to clamping groove 15 is connected with assembled ladder 13, one side of assembled ladder 13 is provided with convex edge 18, convex edge 18 and clamping groove 15 are connected with each other and are matched with each other, the top of assembled ladder 13 is provided with clamping block 17, the bottom of assembled ladder 13 is provided with bottom connecting groove 16, and clamping block 17 and bottom connecting groove 16 are matched with each other.

[0029] In the inside of second sub -tank 2, clamping plate 14 can be connected in each circle groove 11 from top to bottom, and the number of clamping plate 14 required can be installed according to the situation in actual application, and the whole clamping plate 14 is installed in a stepped form, and assembled ladder 13 is installed on one side of each group of clamping plate 14, and the upper and lower two groups of clamping plate 14 are connected through assembled ladder 13 after assembly, for buffering, because there is a gap between the upper and lower two groups of clamping plate 14, the material falls from a high place, which will affect the synthesis. Specific embodiment two

[0031] Reference Figures 1-5In the device, the two key raw materials for synthesizing lithium hexafluorophosphate are lithium fluoride (LiF) and phosphorus pentafluoride (PF5), which enter the first sub-tank 1 through the first and second feed ports 5 and 6 at the top of the first sub-tank 1. After the driving motor 4 is started, the stirring fan blade 7 at the bottom of the first sub-tank 1 begins to rotate, providing strong stirring for the lithium fluoride and phosphorus pentafluoride raw materials entering the first sub-tank 1. The rotation of the stirring fan blade 7 breaks the aggregation state of the raw materials, causing the raw material particles to be uniformly dispersed in the space of the first sub-tank 1, ensuring that the two raw materials are in full contact, creating a uniform mixing environment for subsequent chemical reactions. The stirring process continues for a sufficient time to achieve the desired mixing effect, allowing the molecules between the raw materials to fully interact, improving the uniformity and reaction rate of the reaction.

[0032] When the raw materials in the first sub-tank 1 are mixed, the rotary motor group 10 begins to work, driving the turnover plate 9 at the bottom of the chassis 8 to perform a turnover operation. The turnover plate 9 is originally in a horizontal position, sealing the outlet at the bottom of the chassis 8 to prevent material leakage. Under the drive of the rotary motor group 10, the turnover plate 9 is turned from a horizontal state to a vertical state, and the outlet at the bottom of the chassis 8 is opened, allowing the mixed material in the first sub-tank 1 to fall under the action of gravity.

[0033] The ring groove 11 on the inner wall of the second sub-tank 2 provides positioning for the installation of the clamping plates 14. The clamping plates 14 are designed in a semi-circular shape and arranged in a staggered stepped manner, which aims to prolong the residence time of the material in the second sub-tank 2 and increase the movement path of the material. When the material falls from the first sub-tank 1 into the second sub-tank 2, it will first fall on the uppermost clamping plate 14. Due to the semi-circular shape of the clamping plate 14, the material will disperse along the arc surface of the clamping plate 14, rather than falling in a concentrated point, avoiding the problem of material accumulation and excessive local reaction. The gap between adjacent clamping plates 14 provides a falling channel for the material, allowing it to flow layer by layer downward.

[0034] The assembled steps 13 are clamped in the clamping grooves 15 on the outer side of each clamping plate 14. The convex edges 18 of the assembled steps 13 are clamped with the clamping grooves 15, ensuring the stability of their positions. At the same time, the clamping blocks 17 of the assembled steps 13 are adapted with the bottom clamping grooves 16 of the adjacent assembled steps 13 below, forming a continuous stepped structure. This structure design is of great significance to the flow of the material:

[0035] Buffering function: When the material falls from the upper clamping plate 14, it will first hit the assembled steps 13 below, which provide a buffer for the material, reducing the impact force of the falling material and avoiding splashing and excessive impact on the inner wall of the reactor caused by high-speed falling of the material, protecting the structural integrity of the reactor. At the same time, it also avoids the problem of uneven dispersion of the material caused by impact, ensuring that the material can maintain a relatively stable state during the falling process.

[0036] Material guiding and reaction promotion: By assembling the stepped arrangement of ladder steps 13, the material will slowly flow down along the surface of these ladder steps, increasing the residence time of the material in the second sub-tank 2, providing more sufficient time and space for the reaction between lithium fluoride and phosphorus pentafluoride. As the material passes through each assembled ladder step 13, it will continuously adjust its distribution state, so that the two raw materials can further mix and react at different heights and positions, promoting the progress of the chemical reaction.

[0037] Improvement of reaction uniformity: The stepped card board 14 and the assembled ladder step 13 form a structure, which makes the flow path of the material in the second sub-tank 2 more tortuous and complex. The material continuously contacts with new raw materials and intermediate products during the falling process, ensuring the uniformity of the reaction and avoiding the problem of unstable product quality caused by local reaction too fast or too slow.

[0038] This reactor adopts three groups of continuous tanks (first sub-tank 1, second sub-tank 2 and storage tank 3), which makes the synthesis process continuous and scalable.

[0039] Material transfer from the second sub-tank to the storage tank: After the material completes a certain degree of reaction and treatment in the second sub-tank 2, it will enter the storage tank 3 through the discharge port 12 at the bottom center of the second sub-tank 2.

[0040] Continuous operation advantage: When multiple groups of such continuous reactors are used in series, the storage tank 3 of the first group of reactors can be connected with the first sub-tank 1 of the next group of reactors, forming a continuous production process. The product synthesized in the previous group of reactors can be used as raw material or intermediate product for the next group of reactors, continuing the subsequent reaction or treatment steps, realizing the continuous operation of the lithium hexafluorophosphate synthesis process. This continuous operation can greatly improve production efficiency, reduce material transfer and waiting time in the production process, improve the overall operation efficiency of the equipment, and reduce production cost.

[0041] In summary:

[0042] 1、In this device, the continuous lithium hexafluorophosphate synthesis reactor provides an efficient, stable and continuous operation device for the synthesis of lithium hexafluorophosphate through the cooperation of unique tank structure, buffer structure and continuous tank. From the feeding and mixing of raw materials, to the material transfer and reaction between different tanks, to the storage of the final product, each link is carefully designed to optimize the synthesis process of lithium hexafluorophosphate, improve product quality and production efficiency.

[0043] 2. In this equipment, the groove 11 on the inner wall of the second sub-tank 2 provides positioning for the installation of the pallet 14. The pallet 14 adopts a semi-circular design and is arranged in an alternating stepped manner. Its purpose is to extend the residence time of the material in the second sub-tank 2 and increase the movement path of the material. When the material falls from the first sub-tank 1 into the second sub-tank 2, it will first fall on the uppermost pallet 14. Due to the semi-circular shape of the pallet 14, the material will be dispersed along the arc surface of the pallet 14 instead of falling in one point, thus avoiding the problems of material accumulation and excessively violent local reactions. The gap between adjacent pallets 14 provides a falling channel for the material, allowing the material to flow downward layer by layer.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A continuous lithium hexafluorophosphate synthesis reactor, comprising a first sub-tank (1), a second sub-tank (2), and a storage tank (3), characterized in that: The top of the storage tank (3) is equipped with a second sub-tank (2). The storage tank (3) is shaped like a frustum. The top of the second sub-tank (2) is equipped with a first sub-tank (1). The middle of the top of the first sub-tank (1) is equipped with a drive motor (4). The bottom of the drive motor (4) is equipped with a stirring fan blade (7). A first feed inlet (5) is provided on one side of the top of the first sub-tank (1). A second feed inlet (6) is provided on the other side of the top of the first sub-tank (1).

2. The continuous lithium hexafluorophosphate synthesis reactor according to claim 1, characterized in that: The bottom of the first sub-tank (1) is fitted with a chassis (8), and a flip plate (9) is installed in the middle of the bottom end of the chassis (8). A rotary motor assembly (10) is installed on one side of the bottom of the first sub-tank (1), and the output end of the rotary motor assembly (10) passes through the middle of the flip plate (9).

3. The continuous lithium hexafluorophosphate synthesis reactor according to claim 1, characterized in that: The inner wall of the second sub-tank (2) is provided with a ring groove (11), and the bottom of the second sub-tank (2) is provided with a discharge port (12).

4. A continuous lithium hexafluorophosphate synthesis reactor according to claim 3, characterized in that: The second sub-tank (2) is fitted with a retaining plate (14), which is semi-circular in shape.

5. A continuous lithium hexafluorophosphate synthesis reactor according to claim 4, characterized in that: The plates (14) in the second sub-tank (2) are arranged in an alternating stepped manner, with gaps between adjacent plates (14).

6. A continuous lithium hexafluorophosphate synthesis reactor according to claim 5, characterized in that: The outer side of each card plate (14) is provided with a snap-fit ​​groove (15). The side of each card plate (14) near the snap-fit ​​groove (15) is snapped with an assembly ladder (13). One side of the assembly ladder (13) is provided with a protruding edge (18). The protruding edge (18) and the snap-fit ​​groove (15) are snapped together and adapted to each other.

7. A continuous lithium hexafluorophosphate synthesis reactor according to claim 6, characterized in that: The top of the assembly ladder (13) is provided with a locking block (17), and the bottom of the assembly ladder (13) is provided with a bottom groove (16). The locking block (17) and the bottom groove (16) are compatible with each other.

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