Lithium hexafluorophosphate hydrolysate treatment device

Abstract

The utility model provides a lithium hexafluorophosphate hydrolysate treatment device, which relates to the technical field of lithium hexafluorophosphate production, and comprises a C-shaped support frame, a liquid storage box body is mounted at the bottom in the support frame, a bottom separator is mounted at the top of the liquid storage box body, a middle separator is mounted at the top of the bottom separator, and the middle separator is mounted at the bottom of the liquid storage box body. The separation cylinder is mounted at the top of the middle separator, the separation precision is excellent, the unique circular-truncated-cone-shaped inner cylinder design is adopted in the separation cylinder, and hydrolysis products can be preliminarily and efficiently screened according to the particle size through screen holes distributed in a gradient mode in the outer portion of the separation cylinder; large-particle impurities and partial hydrolysis product phases can be rapidly separated out through the sieve holes with large apertures close to the top, materials are finely separated through the sieve holes with small apertures in the bottom, and the problem that the filtering precision of a traditional single-layer filter screen is insufficient is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium hexafluorophosphate production technical field especially relates to a lithium hexafluorophosphate hydrolyzate treatment device. BACKGROUND

[0002] Under the current state of the art, the treatment of lithium hexafluorophosphate hydrolyzate mainly relies on ordinary precipitation filtration, although it can have a certain hydrolysis effect, but the traditional treatment device often adopts a relatively simple combination of precipitation and filtration. In the precipitation link, only rely on gravity to make some larger density solid particles settle naturally, this way is extremely dependent on the standing time of the material, and for those small particle size, density and solution similar impurity particles almost have no separation effect. The subsequent filtration step, usually only simply uses single layer filter screen or filter paper to filter, and its filtration precision is limited, and only a part of larger particle solid impurities can be intercepted, for the complex ion components commonly existing in the hydrolyzate, such as fluoride ions, phosphate ions, and trace amounts of unreacted lithium hexafluorophosphate raw materials, it is impossible to realize effective separation, secondly, from the perspective of separation process, the existing technology lacks efficient integrated structure design. Many treatment devices isolate the mixing and separation processes and carry out them in different devices or links. This leads to the phenomenon of blockage in the material transfer process, especially when the treatment contains a certain viscosity or unevenly distributed hydrolyzate. Moreover, this step-by-step treatment method makes the whole treatment process long, and the connection between the links is not close enough, thereby greatly reducing the separation efficiency, so a lithium hexafluorophosphate hydrolyzate treatment device is needed to solve the above problems. SUMMARY

[0003] The utility model aims at solving the shortcomings in the prior art and provides a lithium hexafluorophosphate hydrolyzate treatment device.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme: a lithium hexafluorophosphate hydrolyzate treatment device, including support frame, the shape of support frame is C, the bottom in support frame installs the liquid storage tank body, the top of liquid storage tank body installs the bottom separator, the top of bottom separator installs the middle separator, the top of middle separator installs the separation cylinder, the top of separation cylinder is clamped and has the top cap, one side of top cap is connected with the feeding pipe, the middle part of support frame top is installed with the stirring motor, the bottom end transmission of stirring motor is connected with the stirring shaft, the stirring shaft penetrates the top cap.

[0005] Preferably, the inside of the separation cylinder is provided with an inner cylinder, the shape of the inner cylinder is a circular truncated cone, and the outer ring of the inner cylinder is provided with sieve holes.

[0006] Preferably, the bottom of the inner cylinder is provided with a bottom joint, the middle of the bottom end of the separation cylinder is provided with an adapter joint, the bottom of the separation cylinder is provided with a leakage hole near the adapter joint, the leakage hole is circular, the bottom joint and the adapter joint are matched with each other, and the bottom end of the stirring shaft is clamped to the bottom of the inner cylinder.

[0007] Preferably, the middle of the top end of the middle separator is provided with an opening, the opening is aligned with the leakage hole, the middle of the bottom end of the middle separator is provided with a driving motor, the top end of the driving motor is provided with a driving shaft, the outer part of the driving shaft is provided with a sleeve, and the outer part of the sleeve is provided with a stirring paddle in an annular array.

[0008] Preferably, the middle separator is provided with a suspension ball, the outer part of the suspension ball is provided with a dense hole in an annular array, the suspension ball is provided with an adsorbent and a catalyst, and one side of the bottom of the middle separator is provided with a discharging adjusting valve.

[0009] Preferably, one side of the top of the bottom separator is provided with a feeding port, the inner part of the bottom separator is clamped with a chuck, and the inner part of the bottom separator is provided with three groups of chucks.

[0010] Preferably, the top of the chuck is provided with a filter hole in an annular array, the top of the chuck is provided with a breaking sharp cone between the filter holes, the middle of the top end of the chuck is provided with an embedded frame, the embedded frame is not provided with a filter hole, and the embedded frame is provided with a vibrator.

[0011] Preferably, the top of the liquid storage tank is provided with a through hole, the inner part of the liquid storage tank is clamped with a super-permeable membrane, and the bottom of the liquid storage tank is provided with a discharging pipe.

[0012] Beneficial effects

[0013] In the utility model, the separation precision is excellent, the unique round table shape inner cylinder in the separation cylinder is designed, the screen holes which are distributed in gradient on the outer part can preliminarily and efficiently screen the hydrolysis product according to the particle size, the screen hole with larger aperture near the top can quickly separate larger particle impurities and part of the hydrolysis product phase, the screen hole with smaller aperture at the bottom can finely separate the material, effectively avoid the problem of insufficient filtering precision of the traditional single layer filter screen, greatly improve the separation capacity of different particle size impurities and hydrolysis product, thereby improve the purity of product. The suspension ball in the middle separator further strengthens the separation effect, the dense hole on the surface and the adsorbent and catalyst filled in the inner part not only can adsorb complex ion components such as fluoride ion and phosphate ion, but also can treat trace unreacted lithium hexafluorophosphate, so that the impurity content of the final obtained product is significantly reduced, can better meet the strict requirement of lithium ion battery electrolyte material on the purity of lithium hexafluorophosphate, and lay a solid foundation for improving the quality of related products.

[0014] The overall processing efficiency of the device is greatly improved, the middle separator fully stirs and mixes the materials through the driving motor to drive the stirring mixing paddle, so that the materials fully contact with the suspended balls, accelerates the adsorption and reaction process, meanwhile, the multi-stage chuck structure in the bottom-mounted separator and the synergistic effect of the crushing sharp cone and the vibrator effectively prevent the filter hole from being blocked, ensure the continuity and efficiency of the filtering process, the components are tightly connected and adopt reliable connection mode such as sealing flange, reduce the loss and delay in the material transfer process, avoid the material blockage and long process caused by the isolation of mixing and separation process in the traditional device, the whole device forms an efficient and smooth overall process from the feeding, separation and treatment of the hydrolysis product to the final collection, can process a large amount of hydrolysis product in a short time, significantly improves the production efficiency of the production enterprise, reduces the production cost, enhances the competitiveness of the enterprise in the market, and effectively promotes the efficient development of lithium hexafluorophosphate related industry. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the utility model;

[0016] Figure 2 It is the internal structure diagram of the separation cylinder of the utility model;

[0017] Figure 3 It is the internal structure diagram of the middle separator of the utility model;

[0018] Figure 4 It is the sleeve structure diagram of the utility model;

[0019] Figure 5 It is the internal structure diagram of the bottom-mounted separator of the utility model;

[0020] Figure 6 It is the chuck structure diagram of the utility model;

[0021] Figure 7 It is the internal structure diagram of the liquid storage tank of the utility model.

[0022] Legend:

[0023] 1, support frame; 2, stirring motor; 3, stirring shaft; 4, feeding pipeline; 5, top cover; 6, separation cylinder; 7, middle separator; 8, bottom-mounted separator; 9, liquid storage tank; 10, discharging pipe; 11, inner cylinder; 12, screen hole; 13, bottom joint; 14, adapter; 15, leakage port; 16, opening; 17, suspended ball; 18, dense hole; 19, driving motor; 20, discharging adjusting valve; 21, driving shaft; 22, sleeve; 23, stirring mixing paddle; 24, feeding port; 25, chuck; 26, embedded frame; 27, crushing sharp cone; 28, filter hole; 29, through port; 30, ultrafiltration membrane. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below 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 embodiments, other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the utility model.

[0025] The specific embodiments of the utility model are described below in combination with the drawings. Embodiment one

[0027] Referring to Figures 1-7 A lithium hexafluorophosphate hydrolysis product treatment device, comprising a support frame 1, the shape of the support frame 1 is C-shaped, a liquid storage tank body 9 is installed at the bottom in the support frame 1, a bottom-mounted separator 8 is installed at the top of the liquid storage tank body 9, a middle separator 7 is installed at the top of the bottom-mounted separator 8, a separation cylinder 6 is installed at the top of the middle separator 7, a top cover 5 is clamped at the top of the separation cylinder 6, a feeding pipeline 4 is connected to one side of the top cover 5, a stirring motor 2 is installed at the middle of the top end of the support frame 1, a stirring shaft 3 is drivingly connected to the bottom end of the stirring motor 2, and the stirring shaft 3 penetrates through the top cover 5.

[0028] The C-shaped structure design of the support frame 1 has a reinforcing rib structure at the upward bending part of both ends, the reinforcing rib adopts a triangular cross-section design, and the material is high-strength alloy steel, so as to enhance the stability and carrying capacity of the entire support frame; when connected with the liquid storage tank body 9, a plurality of high-strength bolts are uniformly distributed and fixed, the bolt specification is M16, and the material is stainless steel 316, so as to ensure that the liquid storage tank body 9 is installed firmly and placed horizontally, and prevent displacement or inclination of the liquid storage tank body 9 due to vibration generated by equipment operation; in addition, flat washers and spring washers are also provided at the bolt connection positions, so as to prevent the bolts from loosening, and rubber shock-absorbing pads are installed at the bottom of the support frame 1, which can effectively reduce the vibration transmitted to the ground during equipment operation, and avoid interference with the surrounding environment.

[0029] The connection between the middle separator 7 and the separation cylinder 6 and the bottom-mounted separator 8 all adopts a sealing flange connection mode; the flange disc is made of carbon steel and has undergone corrosion-resistant coating treatment on the surface; a high-temperature-resistant and corrosion-resistant fluorine rubber sealing ring is installed between the flange discs, the cross-sectional shape of the sealing ring is circular, the hardness is 70-80 degrees of Shore hardness, the sealing property of the connection position is ensured, and the leakage of the hydrolysis product is prevented; the bolt holes on the flange disc adopt a symmetrical distribution design, the number is 12, and the bolt holes are uniformly distributed on the circumference of the flange disc and are tightened according to the specified torque 200-250 N·m, so that the connection is tight and reliable.

[0030] The interior of the separation cylinder 6 is provided with an inner cylinder 11, which is in the shape of a circular truncated cone, and the outer periphery of the inner cylinder 11 is provided with sieve holes 12.

[0031] The sieve holes 12 of the inner cylinder 11 are of a gradient distribution in size, the sieve holes near the top of the inner cylinder 11 are 2-3 mm in size, and can separate out larger impurities or preliminarily separate out part of the hydrolysis products; the sieve holes near the bottom of the inner cylinder 11 are 0.5-1 mm in size, and can further finely screen the materials, the sieve holes are in the shape of a circle, the inner wall is polished, the surface roughness Ra is less than 0.8 microns, the resistance of the materials passing through is reduced, and the sieve holes are prevented from being blocked, the wall thickness of the inner cylinder 11 is 3-5 mm, the inner cylinder 11 is made of stainless steel 304, and has good corrosion resistance and mechanical strength, the clamping part of the stirring shaft 3 and the inner bottom of the inner cylinder 11 is provided with a special clamping groove and clamping block structure, a spring sheet is installed on the clamping block, the spring sheet is made of stainless steel 301, and has an elastic modulus of 190-210 GPa, when the stirring shaft 3 is inserted, the spring sheet is elastically deformed, the clamping block is firmly clamped in the clamping groove, the inner cylinder 11 can be stably driven to rotate in the process of rotation of the stirring shaft 3, and the stirring shaft 3 can be easily taken out by pressing the spring sheet during equipment maintenance or repair, the stirring shaft 3 is made of stainless steel 316, is 30-50 mm in diameter, and is hardened on the surface to improve wear resistance, a plurality of stirring blades are arranged on the shaft body along the length direction, the stirring blades are in the shape of an inclined rectangle, and the shaft body is at an angle of 45-60 degrees to the stirring blades, so that the stirring effect is enhanced.

[0032] A bottom joint rotary head 13 is installed at the bottom of the inner cylinder 11, a matching joint 14 is arranged at the middle of the inner bottom of the separation cylinder 6, a leakage hole 15 is arranged at the outer bottom of the separation cylinder 6 and near the matching joint 14, the leakage hole 15 is in the shape of a circular ring, the bottom joint rotary head 13 and the matching joint 14 are matched with each other, the bottom end of the stirring shaft 3 is clamped with the inner bottom of the inner cylinder 11, an opening 16 is arranged at the middle of the top end of the middle separation device 7, the opening 16 is aligned with the leakage hole 15, a driving motor 19 is installed at the middle of the inner bottom of the middle separation device 7, a driving shaft 21 is drivingly connected to the top end of the driving motor 19, a sleeve 22 is sleeved on the outer periphery of the driving shaft 21, a stirring and mixing paddle 23 is arranged on the outer periphery of the sleeve 22 in a ring shape, a suspension ball 17 is arranged in the middle separation device 7, a dense hole 18 is arranged on the outer periphery of the suspension ball 17 in a ring shape, an adsorbent and a catalyst are arranged in the suspension ball 17, and a discharging adjusting valve 20 is arranged on one side of the bottom of the middle separation device 7.

[0033] The material of the suspension ball 17 is high-strength, acid and alkali resistant polytetrafluoroethylene polymer material, the diameter of the dense pores 18 is between 0.1-1mm, the dense pores are uniformly distributed and interconnected. The adsorbent inside the suspension ball 17 is a mixture of specially treated activated alumina and activated carbon, the mass ratio of activated alumina to activated carbon is 3:2, which can effectively adsorb various ions and organic impurities; the catalyst is a metal oxide catalyst such as titanium dioxide catalyst, which can promote certain chemical reactions in the hydrolysis product, such as decomposition of residual lithium hexafluorophosphate, etc. The diameter of the suspension ball 17 is 10-20mm, the filling rate in the middle separator 7 is 40%-60%, the connection between the sleeve 22 and the drive shaft 21 adopts key connection, corresponding key grooves are processed on the inner wall of the sleeve 22 and the drive shaft 21, the depth of the key grooves is 3-5mm, the width is 8-12mm, the two are tightly connected by means of flat key, which ensures that the sleeve 22 can rotate synchronously with the drive shaft 21, the torque is stable, the stirring paddle 23 and the sleeve 22 are connected by welding, the welding part is treated by strengthening, double-sided welding and polishing of the welding seam are adopted, which ensures that the stirring paddle 23 will not fall off during high-strength stirring, the shape of the stirring paddle 23 is propeller type, the blade width is 20-30mm, the length is 50-80mm, which provides good stirring and mixing effect, the driving motor 19 adopts explosion-proof motor, the protection level is IP55, the power is determined according to the volume of the middle separator 7 and the material processing capacity, generally 3-5kW, the speed of the motor can be adjusted by frequency converter, the range is 500-1500r / min, to adapt to different processing needs, the connection between the motor and the drive shaft 21 adopts coupling, the coupling is elastic coupling, which can effectively compensate the coaxiality error between the motor shaft and the drive shaft 21, reduce vibration and noise.

[0034] The bottom separator 8 is provided with a feed inlet 24 on one side of the top, and a chuck 25 is clamped in the inside of the bottom separator 8. There are three groups of chucks 25 in the inside of the bottom separator 8, and there are filter holes 28 in the top annular array of the chuck 25. The chuck 25 is embedded with a broken sharp cone 27 between the filter holes 28 near the top. The chuck 25 is installed with an embedded frame 26 in the middle of the top end, and there is no filter hole 28 at the embedded frame 26. The embedded frame 26 is installed with a vibrator.

[0035] The filter holes 28 of the chuck 25 gradually decrease in diameter from top to bottom, the top filter hole has a diameter of 1-2 mm, and the bottom filter hole has a diameter of 0.1-0.5 mm, forming a multi-stage filtering system. The edges of the filter holes 28 are chamfered with a radius of 0.2-0.5 mm to reduce wear on the material. The crushing cone 27 is made of hard alloy YG8, and the sharp part has an angle of 30-60 degrees, which can effectively crush larger particle impurities that pass through the filter holes 28. The thickness of the chuck 25 is 5-8 mm, and the material is stainless steel 304, which is electrolytically polished on the surface to improve the surface finish and prevent material residue.

[0036] The vibrator is an electromagnetic vibrator, which is bolted to the fixed frame 26. The bolt size is M8, and the material is stainless steel 304. The vibration amplitude and frequency of the chuck 25 are controlled by adjusting the voltage and frequency of the electromagnetic vibrator. The voltage adjustment range is 0-220V, and the frequency adjustment range is 50-100Hz. A shock-absorbing rubber pad is installed between the vibrator and the chuck 25, with a thickness of 3-5 mm and a hardness of 50-60 degrees of Shore hardness, to prevent vibration from being transmitted to other parts of the equipment and affecting the stability of the equipment. The outer shell of the bottom separator 8 is made of carbon steel, and the inner wall is lined with a polytetrafluoroethylene corrosion-resistant layer with a thickness of 2-3 mm to prevent the hydrolysis product from corroding the equipment.

[0037] The top of the liquid storage tank 9 is provided with a through hole 29, and the inside of the liquid storage tank 9 is clamped with a super-permeable membrane 30. The bottom of the liquid storage tank 9 is provided with a discharge pipe 10.

[0038] The super-permeable membrane 30 adopts a multi-layer composite membrane structure, including a support layer, a separation layer and a protective layer. The support layer is a high-strength non-woven fabric material with a thickness of 100-200 microns, providing mechanical strength to the membrane; the separation layer is a polyamide membrane material with a specific pore size and selectivity, with a pore size of 0.001-0.01 microns, which can accurately separate different components in the hydrolysis product; the protective layer is a hydrophilic polyvinyl alcohol coating with a thickness of 10-20 microns, which prevents the membrane surface from being contaminated and clogged. Specific embodiment two:

[0040] Reference Figures 1-7The lithium hexafluorophosphate hydrolysis product enters the inner cylinder 11 inside the separation cylinder 6 through the feeding pipe 4. The stirring motor 2 is started to rotate the stirring shaft 3. The stirring blades on the surface of the stirring shaft 3 are at an angle of 45-60 degrees with the shaft body. When rotating, the stirring blades can strongly stir the hydrolysis product entering the inner cylinder 11 to fully mix the hydrolysis product, avoid material precipitation or local concentration unevenness, and ensure stable and efficient subsequent processing. The inner cylinder 11 is a circular truncated cone with a gradient distribution of screen holes 12. The screen holes near the top have a diameter of 2-3 mm, which can allow larger particle impurities or part of the hydrolysis product to be preliminarily separated. The screen holes near the bottom have a diameter of 0.5-1 mm for fine screening. Under the combined action of the centrifugal force generated by stirring and gravity, the smaller particles or liquid hydrolysis products pass through the screen holes 12 into the annular space between the separation cylinder 6 and the inner cylinder 11. Larger particle impurities or unreacted materials are left in the inner cylinder 11. The inner cylinder 11 is made of stainless steel 304 with a wall thickness of 3-5 mm to ensure good corrosion resistance and mechanical strength. The inner wall of the screen holes 12 is polished to have a surface roughness Ra of less than 0.8 microns, effectively reducing the resistance of the material passing through and preventing clogging. The bottom joint 13 of the inner cylinder 11 is adapted to the adapter joint 14 at the bottom end of the separation cylinder 6. When the stirring shaft 3 rotates, the inner cylinder 11 is stably driven to rotate by the clamping block and clamping groove and spring sheet structure, further enhancing the centrifugal separation effect. The circular annular leak 15 at the bottom of the separation cylinder 6 is aligned with the opening 16 at the top of the middle separator 7. When the material in the inner cylinder 11 is separated to a certain extent, the material thrown out through the screen holes 12 will enter the middle separator 7 through the leak 15.

[0041] The material flows into the middle separator 7 from the top opening 16. The driving motor 19 is started, which drives the driving shaft 21 to rotate through the elastic coupling, and then the sleeve 22 and the propeller stirring paddle 23 welded outside the sleeve 22 are stirred again. The stirring paddle 23 has a paddle width of 20-30 mm and a length of 50-80 mm, which can make the material evenly distributed. The driving motor 19 is an explosion-proof motor with a protection level of IP55 and a power of 3-5 kW. The rotating speed can be adjusted within the range of 500-1500 rpm through the frequency converter to adapt to different processing requirements. A large number of suspended balls 17 with a diameter of 10-20 mm are placed in the middle separator 7. The material is made of high-strength, acid and alkali resistant polytetrafluoroethylene polymer material. The outer annular array has a large number of 0.1-1 mm diameter and interconnected dense holes 18. The inside contains a mixture of active alumina and activated carbon with a mass ratio of 3:2 as an adsorbent and metal oxide catalysts such as titanium dioxide. In the stirring process, the hydrolysis product is in full contact with the suspended ball 17, and the adsorbent adsorbs and purifies specific ions such as fluoride ions and organic impurities; the catalyst promotes the chemical reaction of residual lithium hexafluorophosphate and other substances, which is converted into a more easily handled form. The filling rate of the suspended ball 17 in the middle separator 7 is 40%-60%, which fully interacts with the material. When processing for a period of time, the discharge regulating valve 20 can be opened according to the needs to discharge part of the processed material from the middle separator 7 to the next processing link or for collection.

[0042] The material processed by the middle separator 7 enters the inside of the bottom separator 8 through the feed port 24 at the top of the bottom separator 8. Three groups of chucks 25 are clamped in the inside of the bottom separator 8. The top of the chuck 25 has a ring-shaped array of filter holes 28, and the hole diameter gradually decreases from 1-2 mm at the top to 0.1-0.5 mm at the bottom, forming a multi-stage filtering system. The material passes through the filter holes 28 of the chuck 25 under the action of gravity. As the material passes through different levels of chucks 25, larger impurities are gradually filtered and intercepted, achieving fine filtration and separation of the hydrolysis product. The edges of the filter holes 28 are treated with rounded corners with a radius of 0.2-0.5 mm to reduce wear on the material. Hard alloy YG8 material breaking sharp cones 27 are embedded between the filter holes 28 at the top of the chuck 25. When larger solid impurities pass through the filter holes 28, they are broken into smaller particles by the breaking sharp cones 27 to facilitate subsequent filtering or processing. An electromagnetic vibrator is installed in the embedded frame 26 at the top center of the chuck 25 and is fixed by a bolt (M8 stainless steel 304 material). The vibration amplitude and frequency of the chuck 25 can be controlled by adjusting the voltage (0-220V) and frequency (50-100Hz). A 3-5 mm thick shock-absorbing rubber pad with a Shore hardness of 50-60 degrees between the vibrator and the chuck 25 prevents vibration transmission. The electromagnetic vibrator is started periodically to produce slight vibrations in the chuck 25, preventing the filter holes 28 from being clogged and ensuring the continuous progress of the filtering process. The outer shell of the bottom separator 8 is made of carbon steel, and the inner wall is lined with a 2-3 mm thick polytetrafluoroethylene corrosion-resistant layer to prevent the hydrolysis product from corroding the equipment.

[0043] The material processed by the bottom separator 8 enters the inside of the liquid storage tank 9 through the through port 29 at the top of the liquid storage tank 9. An ultra-permeable membrane 30 is clamped in the inside of the liquid storage tank 9. It has a multi-layer composite membrane structure. The support layer is a 100-200 micrometer thick high-strength non-woven fabric material that provides mechanical strength. The separation layer is a 0.001-0.01 micrometer aperture polyamide membrane material that can accurately separate different components in the hydrolysis product. The protective layer is a 10-20 micrometer thick hydrophilic polyvinyl alcohol coating that prevents the membrane surface from being contaminated and clogged. The effective filtering area of the ultra-permeable membrane 30 is 2-5 square meters, which can perform the final separation and purification of the hydrolysis product, such as separating out residual small molecule impurities or specific ions, so that the processed hydrolysis product meets higher purity requirements.

[0044] In summary:

[0045] 1. In the device, lithium hexafluorophosphate hydrolysate treatment device is composed of support frame, liquid storage tank, bottom separator, middle separator and separation cylinder and other components. The support frame structure is stable, the connection between components is tight, and the sealing and stability are ensured. The separation cylinder uses the screen hole of the inner cylinder for preliminary separation; the middle separator further processes the material by means of the adsorbent and catalyst in the suspended ball and the stirring mixing paddle; the bottom separator realizes fine filtration through the multi-layer chuck, broken sharp cone and vibrator; finally, the ultrafiltration membrane in the liquid storage tank completes the final purification. The whole device cooperates through various physical and chemical means to comprehensively and efficiently process the hydrolysate, so as to ensure that the product meets the requirements and maintains stable operation.

[0046] 2. When the device processes lithium hexafluorophosphate hydrolysate, the material is first preliminarily separated in the separation cylinder through stirring and screen hole structure, and part of the hydrolysate and impurities are separated. Then the material enters the middle separator, and the suspended ball adsorbs impurities, catalyzes the reaction and stirs the material. Then in the bottom separator, the chuck filter hole, broken sharp cone and vibrator are used for fine impurity filtration. Finally, in the liquid storage tank, the ultrafiltration membrane is used for purification, and the liquid level sensor cooperates with the control system to realize automatic management of the liquid level. Each link is closely coordinated, and the principles of stirring, adsorption, filtration and catalysis are used to realize high-quality processing of the hydrolysate to meet the subsequent use or reuse requirements.

[0047] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under", can include first and second feature direct contact, also can include first and second feature is not direct contact but is through their between another feature contact. Moreover, first feature is in second feature "on", "upper" and "upper surface" includes first feature is in second feature right above and oblique above, or only indicates first feature horizontal height is higher than second feature. First feature is in second feature "under", "below" and "underneath" includes first feature is in second feature right below and oblique below, or only indicates first feature horizontal height is less than second feature.

[0048] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model and do not limit the utility model, and various changes and improvements of the utility model fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium hexafluorophosphate hydrolysis product treatment device comprising a support frame (1), characterized in that: The shape of the support frame (1) is C-shaped, the bottom of the support frame (1) is provided with a liquid storage tank body (9), the top of the liquid storage tank body (9) is provided with a bottom separator (8), the top of the bottom separator (8) is provided with a middle separator (7), the top of the middle separator (7) is provided with a separation cylinder (6), the top of the separation cylinder (6) is clamped with a top cover (5), one side of the top cover (5) is connected with a feeding pipe (4), the middle of the top end of the support frame (1) is provided with a stirring motor (2), the bottom end of the stirring motor (2) is drivingly connected with a stirring shaft (3), and the stirring shaft (3) penetrates through the top cover (5).

2. A lithium hexafluorophosphate hydrolysis product treatment device according to claim 1, characterized by: The inside of the separation cylinder (6) is provided with an inner cylinder (11), the shape of the inner cylinder (11) is a circular truncated cone, and the outer surface of the inner cylinder (11) is provided with a sieve hole (12) in an annular array.

3. A lithium hexafluorophosphate hydrolysis product treatment apparatus according to claim 2, characterized by: The bottom of the inner cylinder (11) is provided with a bottom joint rotary head (13), the middle of the bottom end of the separation cylinder (6) is provided with an adapter joint (14), the bottom of the separation cylinder (6) is provided with a leakage hole (15) outside the adapter joint (14), the shape of the leakage hole (15) is a circular ring, the bottom joint rotary head (13) and the adapter joint (14) are matched with each other, and the bottom end of the stirring shaft (3) is clamped with the bottom of the inner cylinder (11).

4. A lithium hexafluorophosphate hydrolysis product treatment apparatus according to claim 3, characterized by: The middle of the top end of the middle separator (7) is provided with an opening (16), the opening (16) is aligned with the leakage hole (15), the middle of the bottom end of the middle separator (7) is provided with a driving motor (19), the top end of the driving motor (19) is drivingly connected with a driving shaft (21), the outer surface of the driving shaft (21) is sleeved with a sleeve (22), and the outer surface of the sleeve (22) is provided with a stirring and mixing paddle (23) in an annular array.

5. A lithium hexafluorophosphate hydrolysis product treatment device according to claim 4, characterized in that: The inside of the middle separator (7) is placed with a suspension ball (17), the outer surface of the suspension ball (17) is provided with a dense hole (18) in an annular array, the suspension ball (17) is placed with an adsorbent and a catalyst, and one side of the bottom of the middle separator (7) is provided with a discharging adjusting valve (20).

6. A lithium hexafluorophosphate hydrolysis product treatment device according to claim 1, characterized by: One side of the top of the bottom separator (8) is provided with a feeding port (24), the inside of the bottom separator (8) is clamped with a chuck (25), and the inside of the bottom separator (8) is provided with three groups of chucks (25) in total.

7. A lithium hexafluorophosphate hydrolysis product treatment apparatus according to claim 6, characterized by: The top of the chuck (25) is provided with a filter hole (28) in an annular array, the top of the chuck (25) is embedded with a broken sharp cone (27) between the filter holes (28), the middle of the top end of the chuck (25) is provided with an embedded frame (26), the embedded frame (26) is not provided with a filter hole (28), and the embedded frame (26) is provided with a vibrator.

8. A lithium hexafluorophosphate hydrolysis product treatment apparatus according to claim 7, characterized by: The top of the liquid storage tank body (9) is provided with a through port (29), the inside of the liquid storage tank body (9) is clamped with an ultra-permeable membrane (30), and the bottom of the liquid storage tank body (9) is provided with a discharging pipe (10).

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