A fluorine production electrolyte resource recycling system

Abstract

This invention discloses a resource-based regeneration system for fluorine electrolyte, comprising: a dissolution and regeneration reaction device, a regeneration filtration device, a regeneration low-temperature crystallization device, a centrifuge, and a drying chamber. The regeneration low-temperature crystallization device includes: a crystallization tank, a crystallization input pipe, a swing assembly, and a temperature control component. It also includes: a swingable cooling structure, wherein the temperature control component is a coil divided into an input section, a swirling section, and a reflux section; the swingable cooling structure includes a separator membrane, a refrigerant zone, a temperature control zone, a nested cylinder, and an inner support component; and a lower rotating and fixing structure, wherein the lower half of the crystallization tank is connected to several threaded channels, and the lower rotating and fixing structure includes a lower rotating plate and several lower clamping plates. The lower clamping plates are attached to the outer circumferential surface of the swirling section and are spaced apart. This invention requires no manual intervention throughout the entire process, has a high degree of automation, and can achieve automatic loading and unloading.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluorine electrolyte regeneration, in particular to a fluorine electrolyte resource regeneration system. BACKGROUND

[0002] In industry, fluorine gas is prepared by electrolyzing anhydrous hydrogen fluoride (HF), and the electrolyte is a molten mixture (KF·2HF) prepared by mixing potassium hydrogen fluoride (KHF2, containing 20.4% HF) and anhydrous hydrogen fluoride (HF). During the electrolysis process, the electrolyte solution corrodes the electrolytic cell body and its components, causing perforation and water ingress in the electrolytic cell. The corroded electrolytic cell leads to excessive impurity content in the electrolyte solution, causing electrolyte aging, side reactions or impurity accumulation in the electrolyte, resulting in a direct impact on the current efficiency and the purity of the fluorine product. If the electrolyte is not replaced in time, irreversible electrode damage may be caused due to impurity accumulation. Therefore, the electrolyte needs to be replaced after a period of use. The replaced electrolyte is directly externally treated in the traditional process, which not only has a high recovery cost, but also wastes a large amount of useful substances.

[0003] In the process of regenerating the electrolyte in the traditional process, the electrolyte is first placed in a plastic bucket and dissolved into a liquid in a water bath environment, then transferred to another reaction tank to add alkali materials for reaction. The reacted electrolyte solution needs to be aged for a period of time, then transferred to a filtering device for filtering, and the filtered product is placed in a plastic bucket, all of which are placed in a crystallization chamber for crystallization and cooling. After being left for a sufficient time, the product is placed in a drying chamber for drying powder, and then packaged. Although the overall steps are continuous, each step needs to wait for a very long time, for example, the dissolution time needs to be more than twelve hours, the aging time needs to be more than twenty-four hours, and the crystallization time needs to be up to forty-eight hours. A batch of electrolyte not only needs a long period of consumption, but also needs manual on-site monitoring, which is low in efficiency and has a small processing capacity.

[0004] Therefore, the present application aims to provide a fluorine electrolyte resource regeneration system, which can regenerate the electrolyte in a closed environment, improve the efficiency by using steam, vacuum extraction and circulating refrigerant intervention, and does not need manual intervention throughout the process, so as to realize high automation and automatic feeding and discharging. SUMMARY

[0005] The present application provides a fluorine electrolyte resource regeneration system, which can effectively solve the above problems.

[0006] The present application is implemented as follows:

[0007] A fluorine electrolyte resource recycling system, comprising: a dissolution regeneration reaction device connected to the electrolyte feed end, the bottom of the dissolution regeneration reaction device is connected with a regeneration filter device, the regeneration filter device is connected to a regeneration low-temperature crystallization device through a flow pump, the discharge end of the regeneration low-temperature crystallization device is connected to a centrifuge, the solid discharge end of the centrifuge is communicated to a drying chamber,

[0008] The regeneration low-temperature crystallization device comprises a crystallization tank, a crystallization input pipe is arranged at the top of the crystallization tank, the crystallization input pipe is connected to the regeneration filter device through a flow pump, a swing assembly is arranged at the top center of the crystallization tank, the lower end of the swing assembly is connected with a temperature regulating piece, and the regeneration low-temperature crystallization device further comprises:

[0009] The temperature regulating piece is a coil pipe, the coil pipe is divided into an input section, a convolution section and a return section, the swing assembly comprises a separation membrane arranged in the coil pipe, the separation membrane divides the inside of the coil pipe into a refrigerant area and a temperature control area, the lower end of the swing assembly is provided with a nested sleeve, the input section is inserted into the nested sleeve, the bottom of the return section extends to the center of the crystallization tank and extends into the nested sleeve, the outer side of the return section is provided with an inner support, and the inner support is attached to the inner side of the convolution section.

[0010] The lower rotating fixing structure comprises a lower rotating plate arranged in the threaded channel, a plurality of lower clamping pieces are arranged on the lower rotating plate, the lower clamping pieces are attached to the outer circumferential surface of the convolution section, and the lower clamping pieces are arranged at intervals.

[0011] As a further improvement, the dissolving regeneration reaction device comprises: an outer dissolving kettle body for containing liquid, a mounting cover is arranged at the top of the outer dissolving kettle body, an electrolyte feeding hopper, a mother liquor return pipe and an alkali material feeding pipe are arranged at the top of the mounting cover, further comprising: an inner rotating dissolving tank, a lower rotating frame is arranged at the inner bottom of the outer dissolving kettle body, an upper rotating frame is arranged at the inner top of the outer dissolving kettle body, the inner rotating dissolving tank comprises a steel lining fluorine tube cylinder movably mounted between the lower rotating frame and the upper rotating frame, an outer rotating part is arranged at the upper half of the outer side of the steel lining fluorine tube cylinder, the outer rotating part is driven by at least one driving part, the electrolyte, the mother liquor and the alkali material fed through the electrolyte feeding hopper, the mother liquor return pipe and the alkali material feeding pipe are fully mixed and dissolved in the outer rotating part driven by the driving part; a movable steam structure, an opening is arranged at the top of the outer dissolving kettle body, the movable steam structure comprises a steam guide pipe movably inserted into the opening, the top end of the steam guide pipe is connected with an external steam pipe, the bottom of the steam guide pipe is connected with a steam distributor, the outer wall of the steam distributor is tightly attached to the inner wall of the steel lining fluorine tube cylinder, when the driving part drives the steel lining fluorine tube cylinder to rotate, the steam distributor provides a counterforce at the inner side, the end of the steam distributor is tightly attached to the inner wall of the steel lining fluorine tube cylinder.

[0012] As a further improvement, the regeneration filtering device comprises: a filtering distribution pipe connected with the dissolving regeneration reaction device, the lower end of the filtering distribution pipe is connected with at least three filters, the filter comprises a filtering hopper for containing liquid, a filtering plate is arranged on the filtering hopper, a collecting hopper is connected with the lower end of the filtering hopper, a lower guide pipe is arranged at the lower end of the collecting hopper, an external discharge pipe is connected with the lateral side of the lower guide pipe, the external discharge pipe is connected with a vacuum pumping device, further comprising: a filtering plate adjusting and mounting structure, the filtering plate comprises a middle connecting shaft, an acid and alkali resistant filtering plate is connected with the two sides of the middle connecting shaft, a high guard plate is connected with the side of the acid and alkali resistant filtering plate away from the middle connecting shaft, the filtering plate adjusting and mounting structure comprises a guide groove for guiding the middle connecting shaft, two two-way adjusting parts are connected with the outer sides of the two high guard plates, the two-way adjusting parts make the two acid and alkali resistant filtering plates form an inverted V-shaped structure when the filtering distribution pipe discharges, and make the two acid and alkali resistant filtering plates form a V-shaped structure after the filtering distribution pipe discharges for a period of time; an inner distribution filtering structure, a plurality of inner rings are arranged at the lower end of the collecting hopper, a circular filtering plate is movably mounted on the inner rings, the circular filtering plate rotates on the inner rings when the electrolyte solution passes through the circular filtering plate.

[0013] As a further improvement, the steel lining Teflon pipe cylinder comprises a steel cylinder, the inner side of the steel cylinder is provided with a Teflon lining, the top of the steel cylinder extends outwardly and is provided with a support along, the thickness of the Teflon lining is thicker than the steel cylinder, the driving member comprises a driving frame arranged on the inner wall of the outer dissolving kettle body, the driving frame extends to the bottom surface of the outer rotating ring, an inner lining rotating motor is arranged on the driving frame, a matching gear is arranged on the output end of the inner lining rotating motor, and the matching gear is engaged with the outer rotating gear ring.

[0014] As a further improvement, the steam applicator comprises an inner steam support frame arranged on the inner side of the steel lining Teflon pipe cylinder, the inner steam support frame is located on the same horizontal plane as the outer rotating member, the inner side of the inner steam support frame is provided with a plurality of steam branch pipes in communication with the steam guide pipe, and the lower end of the steam branch pipe points to the inner wall of the steel lining Teflon pipe cylinder.

[0015] As a further improvement, the middle connecting shaft comprises a hollow elongated cylinder, one acid and alkali resistant filter plate is connected to the elongated cylinder, an elongated rod is movably arranged in the elongated cylinder, the elongated rod is longer than the elongated cylinder, another acid and alkali resistant filter plate is connected to the elongated rod, the elongated rod is connected to the guide groove, the acid and alkali resistant filter plate comprises a square plate body connected to the middle connecting shaft, a plurality of switchable filter holes are formed in the plate body, a clamping plate is movably connected to three columns of switchable filter holes close to the middle connecting shaft, when the plate body is in an inverted V shape, the clamping plate closes the corresponding switchable filter hole, and when the plate body is in a V shape, the three columns of switchable filter holes close to the middle connecting shaft are in an open state.

[0016] As a further improvement, the two-way adjusting member comprises a transverse swing member connected to the rear hinge seat, the transverse swing member is locked to a longitudinal movable member, the longitudinal movable member is fixed in the filter hopper, the transverse swing member comprises a transverse mounting plate locked to the longitudinal movable member, a transversely arranged push rod is fixed to the transverse mounting plate, a universal hinge knob is arranged at the end of the transversely arranged push rod, and the universal hinge knob is connected to the outer side of the high guard plate, the longitudinal movable member comprises a fixed mounting seat locked to the rear side of the transverse mounting plate, a longitudinal push rod is connected to the lower end of the fixed mounting seat, the longitudinal push rod is fixed to a longitudinal mounting plate, and the longitudinal mounting plate is connected to the inner wall of the filter hopper.

[0017] As a further improvement, the circular filter plate comprises a circular plate rotatably mounted in the inner ring, a plurality of filter holes are formed in the circular plate, a plurality of guide columns are fixed to the top of the circular plate, a plurality of guide balls are arranged on the circular plate, and the guide balls are movably connected to the inner ring.

[0018] As a further improvement, the swing assembly includes a swing motor disposed on the top surface of the crystallization tank. The lower end of the swing motor is connected to a short connecting rod. A single pendulum restraint is disposed on the portion of the short connecting rod located outside the crystallization tank. The nested cylinder is connected to the portion of the short connecting rod located inside the crystallization tank. The nested cylinder includes a sleeve fixed to the short connecting rod. A suspension frame extends outward from the bottom edge of the nested cylinder. The suspension frame is connected to the gyratory section. The input section and the reflux section are both connected to the short connecting rod through the sleeve. The inner support member includes an inner support cylinder sleeved outside the reflux section. A plurality of inner support rods are disposed on the outer wall of the inner support cylinder. The inner support rods are pressed against the lower clamping plate.

[0019] As a further improvement, the lower swivel plate includes a hollow frame for supporting the bottom surface of the return section. An extrusion frame for supporting the swivel section is connected to the outside of the hollow frame. The extrusion frame is fixed on a rotating frame and the rotating frame mates with a threaded track. The lower clamping plate includes a clamping plate vertically arranged on the extrusion frame. Several clamping hoops are provided on the inner side of the clamping plate and the clamping hoops are attached to the swivel section.

[0020] The beneficial effects of this invention are:

[0021] Compared to existing technologies that operate in separate zones, this invention first directly performs the dissolution, reaction, and aging steps within the dissolution and regeneration reaction device. Then, the solution from the dissolution and regeneration reaction device is passed into a regeneration filtration device for filtration. Since the solid content of the filtered solution is already low, it will not solidify even when pumped through a flow pump without heating. Therefore, the filtered electrolyte solution is pumped into a low-temperature regeneration crystallization device for crystallization at low temperatures. The crystallized particles directly settle to the bottom. After the supernatant is discharged, the bottom sediment is centrifuged. The centrifuged solids are directly dried, while the mother liquor from centrifugation and the supernatant from crystallization are returned to the dissolution step for reuse. This continuous production line not only reduces manual labor but also simplifies the process, effectively improving the efficiency of each regeneration step and thus increasing the efficiency of electrolyte regeneration.

[0022] Existing technologies require the solution to be continuously transferred through plastic containers to different environments for reaction, resulting in very slow overall reaction efficiency. Furthermore, due to the limited area of ​​the water bath, the annual electrolyte processing capacity is limited, and production output cannot be increased. Therefore, this invention, through the design of an internal swirling dissolution tank, firstly employs a steel-lined PTFE tube, allowing the entire dissolution reaction to take place inside the PTFE-lined tube, avoiding the introduction of new metal impurities. Simultaneously, an external swirling component is installed on the outside of the PTFE-lined tube, allowing the entire rotation to be completed externally, avoiding the direct placement of the stirring equipment inside the PTFE-lined tube. This minimizes the contact between more metals and the electrolyte, thereby ensuring the purity of the regenerated electrolyte.

[0023] While placing the external rotating component outside the PTFE-lined tubing reduces the introduction of metal impurities, the metal portion of the tubing needs to be thinned to facilitate rotation. This thinning reduces the overall strength of the tubing, making it prone to deformation when rotated by the external rotating component. Therefore, this invention incorporates a movable steam structure into the internal rotating dissolving tank. The steam applicator of this movable steam structure not only provides steam heating without contacting the electrolyte solution but also fits snugly against the interior of the PTFE-lined tubing. Positioned at the same level as the external rotating component, the steam applicator supports the inner wall of the tubing, ensuring balance between the inside and outside during rotation, preventing deformation of the tubing, and guaranteeing a stable dissolving reaction.

[0024] Existing acid and alkali resistant alloy filter plates are prone to clogging in certain areas. Because they involve multi-stage feeding, the feeding area is difficult to adjust, resulting in workers encountering numerous impurities on the filter screen. This necessitates closing the filter inlet valve, removing the filter screen, emptying the impurities into a solid waste bin, washing the screen with mother liquor, and then replacing the screen and reopening the valve. This process is not only cumbersome but also increases operational risks. Therefore, this invention utilizes a filter plate adjustment and installation structure to divide the acid and alkali resistant filter plate into two parts, allowing for adjustable angles. This enables adjustments to different angles at different feeding stages, resulting in more uniform and smoother feeding. This eliminates the need for frequent manual disassembly and adjustment, making the overall filtration process smoother.

[0025] To avoid clogging caused by the adjustment and installation structure of the filter plate, the holes of the acid and alkali resistant filter plate should not be too small, otherwise the particles cannot be completely filtered out in one filtration. Therefore, this invention sets up an internal filtration structure on the basis of the filter plate adjustment and installation structure. By rotating the installed circular filter plate, the downward flushing solution drives the circular filter plate to rotate, so that the solution is dispersed and then filtered through several circular filter plates. The layer-by-layer filtration makes the electrolyte solution more pure.

[0026] While existing technologies can achieve constant-temperature crystallization, the overall settling time needs to exceed 24 hours, resulting in low crystallization efficiency. Furthermore, both feeding and unloading processes require continuous manual material transfer, which is time-consuming. Therefore, this invention utilizes a swing-type cooling structure to directly add the filtered electrolyte solution to the crystallization tank, allowing the solution to be cooled within the tank for crystallization. However, since static crystallization is slow, this invention allows the temperature control component to rotate cyclically under the action of the swing assembly. The oscillation of the crystals allows the electrolyte solution to sway slightly, thereby improving crystallization efficiency. However, if the cooling is too rapid, the crystals will become small and powdery, easily trapping impurities and making filtration difficult. Therefore, the temperature control component of this invention is divided into two paths. First, room temperature liquid is introduced into the temperature control zone, which restricts the amount of refrigerant that can flow into the refrigerant zone, making the cooling rate of the electrolyte solution slower. Then, the amount of liquid flowing into the temperature control zone is gradually reduced, thereby lowering the temperature and making the generated crystals more uniform and stable in size. Moreover, the entire process does not require frequent manual crystal switching, and the crystals can be generated automatically and orderly and discharged automatically.

[0027] Although the swingable cooling structure can improve the crystallization effect after rotation, because the swingable cooling structure is a coil structure, it will cause downward swinging diffusion and deformation when rotating. Therefore, the present invention sets up a lower rotation fixing structure on the basis of the swingable cooling structure. First, the entire coil can be pushed upward by rotating the lower plate to make the gap between the tubes tightly fit together. Then, the bottom of the coil is supported by the restraint of the lower clamp, thereby making the bottom of the entire coil more stable and preventing damage during swinging, thus achieving a stable cooling effect. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the dissolution and regeneration reaction device of the present invention.

[0031] Figure 3 This is the present invention. Figure 2 A top-view structural diagram.

[0032] Figure 4 This is the present invention. Figure 3 Cross-sectional view at point AA.

[0033] Figure 5 This is a schematic diagram of the structure of the steel-lined PTFE tube of the present invention.

[0034] Figure 6 This is a bottom view of the steam applicator of the present invention.

[0035] Figure 7 This is the present invention. Figure 4 A magnified view of region A1 in the middle.

[0036] Figure 8 This is the present invention. Figure 4 A magnified view of region A2 in the middle.

[0037] Figure 9 This is a schematic diagram of the regeneration filtration device of the present invention.

[0038] Figure 10 This is the present invention. Figure 9 A top-view structural diagram.

[0039] Figure 11 This is the present invention. Figure 10 Cross-sectional view at point BB.

[0040] Figure 12 This is a schematic diagram of the structure of the filter of the present invention.

[0041] Figure 13 This is the present invention. Figure 12 A magnified view of region B in the middle.

[0042] Figure 14 This is a schematic diagram (first-person view) of the filter plate and the filter plate adjustment and installation structure of the present invention.

[0043] Figure 15 This is a schematic diagram (second perspective) of the filter plate and filter plate adjustment and installation structure of the present invention.

[0044] Figure 16 This is a schematic diagram of the regeneration low-temperature crystallization device of the present invention.

[0045] Figure 17 This is a schematic diagram of the temperature regulating component of the present invention.

[0046] Figure 18 This is a schematic diagram of the structure of the recirculation section and the inner support component of the present invention.

[0047] Figure 19 This is a schematic diagram of the rotating fixed structure of the present invention.

[0048] Figure 20This is a schematic diagram of the swingable cooling structure of the present invention.

[0049] In the picture:

[0050] 10. External dissolving vessel body, 101. Lower rotating frame, 1011. Support frame, 1012. Wrapping ring, 1013. External guide wheel, 1014. Upper rotating frame, 1021. Bottom guide plate, 1022. Upper guide plate, 1023. Mounting cover, 11. Electrolyte feeding hopper, 12. Mother liquor return pipe, 13. Alkali feeding pipe, 14. Internal rotating dissolving tank, 15. Steel-lined PTFE tube, 151. Steel tube, 1511. PTFE liner, 1512. Support edge, 1513. Inner plastic ring, 1514. External rotating component, 152. External rotating ring, 1521. External rotating gear ring, 1522. Drive component, 153. Drive frame, 1531. Internal rotating motor, 1532. Matching gear, 15. 33. Movable steam structure 16, steam duct 161, steam distributor 162, inner steam support frame 1621, steam branch pipe 1622, embedded guide wheel 1623, feed pipe clearance groove 1624; filter distribution pipe 21, filter 22, filter hopper 23, collection hopper 24, lower guide pipe 25, external discharge pipe 26, filter plate 27, central connecting shaft 271, long cylinder 2711, long rod 2712, acid and alkali resistant filter plate 272, plate body 2721, switchable filter holes 2722, clamping plate 2723, high guard plate 273, swing shaft 2731, protective plate 2732, rear hinge seat 2733, filter plate Adjustable mounting structure 28, guide groove 281, solid seat 2811, movable cavity 2812, two-way adjusting component 282, lateral swing component 2821, lateral mounting plate 28211, horizontal push rod 28212, universal hinge 28213, longitudinal moving component 2822, longitudinal push rod 28222, longitudinal mounting plate 28223, internal filtration structure 29, inner ring 291, circular filter plate 292, circular plate 2921, guide column 2922, guide ball 2923; crystallizer 31, threaded channel 311, crystallization input pipe 32, swing assembly 33, swing motor 331, short connecting rod 332, single pendulum. Limiting component 333, single pendulum limiting rod 3331, limiting cylinder 3332, one-way limiting seat 3333, swingable cooling structure 34, separator membrane 341, refrigerant zone 342, temperature control zone 343, nested cylinder 344, sleeve 3441, suspension frame 3442, inner support component 345, inner support cylinder 3451, inner support rod 3452, lower rotating fixing structure 35, lower rotating plate 351, hollow frame 3511, extrusion frame 3512, rotating frame 3513, lower clamping plate 352, clamping plate 3521, clamping hoop 3522, temperature regulating component 38, input section 381, swivel section 382, ​​reflux section 383. Detailed Implementation

[0051] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0052] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] Reference Figures 1-20 As shown, a fluorine electrolyte resource recycling system includes: a dissolution and regeneration reaction device connected to the electrolyte feed end; a regeneration filter device connected to the bottom of the dissolution and regeneration reaction device; the regeneration filter device connected to a regeneration low-temperature crystallization device via a flow pump; the discharge end of the regeneration low-temperature crystallization device connected to a centrifuge; and the solid discharge end of the centrifuge connected to a drying chamber.

[0054] Compared to existing technologies that operate in separate zones, this invention first directly performs the dissolution, reaction, and aging steps within the dissolution and regeneration reaction device. Then, the solution from the dissolution and regeneration reaction device is passed into a regeneration filtration device for filtration. Since the solid content of the filtered solution is already low, it will not solidify even when pumped through a flow pump without heating. Therefore, the filtered electrolyte solution is pumped into a low-temperature regeneration crystallization device for crystallization at low temperatures. The crystallized particles directly settle to the bottom. After the supernatant is discharged, the bottom sediment is centrifuged. The centrifuged solids are directly dried, while the mother liquor from centrifugation and the supernatant from crystallization are returned to the dissolution step for reuse. This continuous production line not only reduces manual labor but also simplifies the process, effectively improving the efficiency of each regeneration step and thus increasing the efficiency of electrolyte regeneration.

[0055] A dissolution and regeneration reaction apparatus includes: an external dissolution vessel 10 for holding liquid, the top of which is provided with a mounting cover 11, and the top of the mounting cover 11 is respectively provided with an electrolyte feeding hopper 12, a mother liquor return pipe 13, and an alkali feeding pipe 14; and an internal swirl dissolution tank 15, the bottom of the inner side of the external dissolution vessel 10 being provided with a lower swirl frame 101, and the top of the inner side of the external dissolution vessel 10 being provided with an upper swirl frame 102; the internal swirl dissolution tank 15 includes a PTFE-lined steel tube 151 movably installed between the lower swirl frame 101 and the upper swirl frame 102, the upper half of which is provided with an external swirl member 152, which is driven by at least one driving member 153, and flows through the electrolyte feeding hopper 12, mother liquor return pipe 13, and alkali feeding pipe 14. The electrolyte, mother liquor, and alkali added to the liquid return pipe 13 and alkali addition pipe 14 are fully mixed and dissolved in the external rotating part 152 driven by the driving member 153; the movable steam structure 16 has an opening at the top of the external dissolution vessel 10, and includes a steam conduit 161 that is movably inserted into the opening. The top end of the steam conduit 161 is connected to an external steam pipe, and the bottom end of the steam conduit 161 is connected to a steam applicator 162. The outer wall of the steam applicator 162 is in close contact with the inner wall of the PTFE-lined steel tube 151. When the driving member 153 drives the PTFE-lined steel tube 151 to rotate, the steam applicator 162 provides a counterforce on the inside, and the end of the steam applicator 162 is in close contact with the inner wall of the PTFE-lined steel tube 151.

[0056] Existing technologies require the solution to be continuously transferred through plastic containers to different environments for reaction, resulting in very slow overall reaction efficiency. Furthermore, due to the limited area of ​​the water bath, the annual electrolyte processing capacity is limited, and production output cannot be increased. Therefore, this invention, through the design of an inner swirling dissolution tank 15, firstly employs a steel-lined PTFE tube 151, allowing the entire dissolution reaction to take place within the PTFE-lined tube 151, thus avoiding the introduction of new metal impurities. Simultaneously, an outer swirling element 152 is provided on the outside of the PTFE-lined tube 151, enabling the entire rotation to be completed externally. This avoids the stirring equipment being directly placed inside the PTFE-lined tube 151, thereby preventing more metal from coming into contact with the electrolyte and ensuring the purity of the regenerated electrolyte.

[0057] The entire PTFE-lined steel tube 151 is quite heavy, both in terms of its own weight and the weight of the electrolyte it carries. To ensure stability while allowing rotation, the lower rotating frame 101 in this embodiment includes a support frame 1011 fixed to the inner wall of the outer dissolving vessel 10. A wrapping ring 1012 is fixed to the inner side of the support frame 1011, and several outer guide wheels 1013 are provided on the inner side of the wrapping ring 1012. The outer guide wheels 1013 are movably engaged with the outer wall of the PTFE-lined steel tube 151. The lower rotating frame 101 needs to be supported by the support frame 1011 and further supported and guided in a ring shape by the wrapping ring 1012 and the outer guide wheels 1013. Under the rotation of the outer rotating component 152 and the driving component 153, the bottom can be stably rotated, thereby ensuring the stability of the inner rotating dissolving tank 15 in the rotating state.

[0058] Since the entire PTFE-lined steel tube 151 needs to rotate, the overall weight needs to be reduced. However, to prevent electrolyte leakage, the PTFE-lined steel tube 151 in this embodiment includes a steel tube 1511. The inner side of the steel tube 1511 is provided with a PTFE tube liner 1512. A support edge 1513 extends outward from the top of the steel tube 1511. The thickness of the PTFE tube liner 1512 is greater than that of the steel tube 1511. The thickness of the PTFE tube liner 1512 remains unchanged, but the thickness of the steel tube 1511 is made thinner, thereby reducing the overall weight and simplifying the rotation process.

[0059] If the top surface of the PTFE-lined tube 151 is not guided, it is easy to make it difficult to position the material feeding position at the top. Therefore, the upper rotating frame 102 in this embodiment includes a bottom guide plate 1021 attached to the lower end of the support edge 1513, and an upper guide plate 1022 is provided at the upper end of the support edge 1513. When the PTFE-lined tube 151 rotates, it is located in the gap formed by the bottom guide plate 1021 and the upper guide plate 1022. The upper rotating frame 102 is provided on the top surface of the PTFE-lined tube 151. The upper guide plate 1022 and the bottom guide plate 1021 formed by the upper rotating frame 102 restrict the support edge 1513 in a certain area, so that the PTFE-lined tube 151 can maintain linear rotation, thereby ensuring that the PTFE-lined tube 151 can stably cooperate with the movable steam structure 16 and the electrolyte feeding hopper 12.

[0060] In order to ensure the stability of the meshing effect during the engagement of the driving component 153 and the external rotating component 152, the external rotating component 152 of the present invention includes an external rotating ring 1521 disposed on the outside of the steel-lined PTFE tube 151. An external rotating gear ring 1522 is disposed on the outside of the external rotating ring 1521. The external rotating gear ring 1522 is connected via the driving component 153. The driving component 153 includes a driving frame 1531 disposed on the inner wall of the outer dissolving vessel 10. The driving frame 1531 extends to the bottom surface of the external rotating ring 1521. An inner liner rotating motor 1532 is provided on 1531. A mating gear 1533 is provided on the output end of the inner liner rotating motor 1532. The mating gear 1533 meshes with the outer rotating gear ring 1522. Not only does the outer rotating gear ring 1522 mesh with the mating gear 1533 driven by the inner liner rotating motor 1532, but the drive frame 1531 of the drive component 153 also supports the outer rotating ring 1521 of the outer rotating component 152. This can maintain the stability of the lower connecting surface during meshing and avoid phenomena such as misalignment.

[0061] Although placing the outer rotating member 152 outside the PTFE-lined tube 151 can reduce the introduction of metal impurities, the metal part of the PTFE-lined tube 151 needs to be thinned to facilitate rotation. After thinning, the overall strength of the PTFE-lined tube 151 is reduced, and the entire tube is prone to deformation when rotated by the outer rotating member 152. Therefore, the present invention sets up a movable steam structure 16 on the basis of the inner rotating dissolving tank 15. The steam applicator 162 of the movable steam structure 16 can not only provide steam heating without contacting the electrolyte solution, but also fits in close contact with the inside of the PTFE-lined tube 151. The steam applicator 162, which is at the same level as the outer rotating member 152, can support the inner wall of the PTFE-lined tube 151, thereby balancing the inside and outside during rotation, avoiding deformation of the PTFE-lined tube 151, and ensuring the stable progress of the dissolving reaction.

[0062] The steam distributor 162 not only needs support but also needs to conduct steam. Therefore, the steam distributor 162 in this embodiment includes an inner steam support frame 1621 located inside the PTFE-lined tube 151. The inner steam support frame 1621 and the outer rotating member 152 are located on the same horizontal plane. A plurality of steam branch pipes 1622 communicating with the steam conduit 161 are provided on the inner side of the inner steam support frame 1621. The lower end of the steam branch pipes 1622 points towards the PTFE-lined tube. The inner wall of the 151 steam applicator 162 is first provided with an inner steam support frame 1621, which provides resistance. A steam branch pipe 1622 is also provided on the inner side of the inner steam support frame 1621. The inner wall of the PTFE-lined steel tube 151 is heated through several steam branch pipes 1622, so that the temperature of the inner wall of the entire PTFE-lined steel tube 151 rises steadily first, and then the temperature of the solution rises further, thereby providing a constant temperature heating or heat preservation effect.

[0063] To prevent some electrolyte from splashing onto the steam applicator 162 during discharging from the electrolyte hopper 12, a discharge pipe clearance groove 1624 is provided on the inner steam support frame 1621 in this embodiment. The electrolyte hopper 12 extends downward and passes through the discharge pipe clearance groove 1624. The discharge pipe clearance groove 1624 on the inner steam support frame 1621 can extend the discharge path of the electrolyte hopper 12, thereby preventing the metal inner steam support frame 1621 from contacting the electrolyte solution.

[0064] To ensure the stability of the steam distributor 162 when the PTFE-lined tube 151 rotates, embedded guide wheels 1623 are provided on the outer walls of the inner steam support frame 1621 and the steam branch pipe 1622 in this embodiment. The inner steam support frame 1621 and the steam branch pipe 1622 are movably connected to the inner wall of the PTFE-lined tube 151. An inner plastic ring 1514 is provided on the inner side of the PTFE-lined tube 151, and the inner steam support frame 1621 is embedded in the inner plastic ring 1514. The embedded guide wheels 1623 are provided on the outer side of the steam distributor 162, and the inner plastic ring 1514 is provided on the inner side of the PTFE-lined tube 151. This ensures that the position of the steam distributor 162 is always on the inner opposite side of the outer rotating part 152, thus ensuring the force balance of the entire PTFE-lined tube 151.

[0065] A regeneration filtration device includes: a filter distribution pipe 21 connected to a dissolution and regeneration reaction device; at least three filters 22 are connected to the lower end of the filter distribution pipe 21; each filter 22 includes a filter bucket 23 for holding liquid; a filter plate 27 is provided on the filter bucket 23; a collection bucket 24 is connected to the lower end of the filter bucket 23; a lower guide pipe 25 is provided at the lower end of the collection bucket 24; an external discharge pipe 26 is connected to the side of the lower guide pipe 25; the external discharge pipe 26 is connected to a vacuum device; and a filter plate adjustment and mounting structure 28 is also included. Each filter plate 27 includes a central connecting shaft 271; an acid- and alkali-resistant filter plate 272 is connected to both sides of the central connecting shaft 271. A high guard plate 273 is connected to one side of the central connecting shaft 271. The filter plate adjustment and mounting structure 28 includes a guide groove 281 for guiding the central connecting shaft 271. Two-way adjustment members 282 are connected to the outer sides of the two high guard plates 273. When the filter distribution pipe 21 discharges material, the two-way adjustment members 282 make the two acid and alkali resistant filter plates 272 form an inverted V-shaped structure. After the filter distribution pipe 21 discharges material for a period of time, the two acid and alkali resistant filter plates 272 form a V-shaped structure. The inner filtration structure 29 includes several inner rings 291 set at the lower end of the collecting hopper 24. A circular filter plate 292 is movably installed on the inner ring 291. When the electrolyte solution passes through the circular filter plate 292, the circular filter plate 292 rotates on the inner ring 291.

[0066] In this implementation, only three filters 22 are separated by the filter distribution pipe 21, but in practice, they can be set individually according to needs, and 1 to 5 filters can be set.

[0067] Existing acid and alkali resistant alloy filter plates are prone to clogging in certain areas. Due to multi-stage feeding, the feeding area is difficult to adjust, resulting in workers encountering a large amount of impurities on the filter screen. This necessitates closing the filter inlet valve, removing the filter screen, emptying the impurities into a solid waste bin, washing the filter screen with mother liquor, and then replacing the filter screen and reopening the valve. This process is not only cumbersome but also increases operational risks. Therefore, this invention utilizes a filter plate adjustment and installation structure 28 to divide the acid and alkali resistant filter plate 272 into two parts, making the angle of the acid and alkali resistant filter plate 272 adjustable. This allows for adjustment to different angles at different feeding stages, resulting in more uniform and smoother feeding. This eliminates the need for frequent manual disassembly and adjustment, making the overall filtration process smoother.

[0068] As mentioned above, the acid and alkali resistant filter plate 272 is divided into two parts, and the two sections of the acid and alkali resistant filter plate 272 need to move relative to each other. The central connecting shaft 271 of the present invention includes a hollow elongated cylinder 2711, which is connected to one of the acid and alkali resistant filter plates 272. An elongated rod 2712 is movably installed inside the elongated cylinder 2711. The elongated rod 2712 is longer than the elongated cylinder 2711 and is connected to the other acid and alkali resistant filter plate 272. The elongated rod 2712 is connected to the guide groove 281. The acid and alkali resistant filter plates 272 are mounted on the central connecting shaft 271. Therefore, the central connecting shaft 271 of the present invention is divided into two sections. Through the arrangement of the elongated cylinder 2711 and the elongated rod 2712, the two sections of the acid and alkali resistant filter plate 272 can fit tightly together while also rotating relative to each other.

[0069] The acid and alkali resistant filter plate 272 has different states in different directions. Therefore, the acid and alkali resistant filter plate 272 in this invention is not an ordinary metal filter plate. The acid and alkali resistant filter plate 272 of this invention includes a square plate body 2721 connected to the central connecting shaft 271. The plate body 2721 is provided with a plurality of switchable filter holes 2722. A retaining plate 2723 is movably connected in the three rows of switchable filter holes 2722 near the central connecting shaft 271. When the plate body 2721 is inverted V-shaped, the retaining plate 2723 closes the corresponding switchable filter hole. 2722, When the plate 2721 is V-shaped, the three rows of switchable filter holes 2722 near the central connecting shaft 271 are in the open state. The top edge of the switchable filter holes 2722 inside the acid and alkali resistant filter plate 272 is provided with an inner groove that can accommodate a movable switch plate 2723, so that the switchable filter holes 2722 of the acid and alkali resistant filter plate 272 can be opened and closed in different shapes, thereby evenly distributing the electrolyte solution in different areas without adding too much metal structure to contact the solution, reducing the possibility of other structures being corroded.

[0070] Although the electrolyte liquid flowing along the acid and alkali resistant filter plate 272 can pass through the filter plate 272 without hindrance, its edges still need to be covered to prevent overflow. Therefore, the high guard plate 273 of the present invention includes a swing shaft 2731 hinged to the outside of the acid and alkali resistant filter plate 272. The swing shaft 2731 extends upward and is connected to a guard plate 2732. A rear hinge seat 2733 is provided on the back side of the guard plate 2732. The rear hinge seat 2733 is connected to the two-way adjustment member 282. By setting the high guard plate 273, the guard plate 2732 itself can prevent the solution from overflowing, while its two ends are set to a movable state, thereby achieving a seal while driving the acid and alkali resistant filter plate 272 to change angle.

[0071] To allow the central connecting shaft 271 to switch more smoothly between V-shape and inverted V-shape and to avoid the two plates hitting each other, the guide groove 281 of the present invention includes a solid base 2811 fixed to the front and rear ends of the inner wall of the filter hopper 23. The inner side of the solid base 2811 is provided with a movable cavity 2812. The central connecting shaft 271 moves up and down in the movable cavity 2812, and the two ends of the central connecting shaft 271 are set in the movable cavity 2812 of the guide groove 281. This allows the central connecting shaft 271 to have a certain vertical movement state while also having a boundary restriction, so that the acid and alkali resistant filter plate 272 can be reversed more smoothly.

[0072] During the reversal process of the acid and alkali resistant filter plate 272, it is necessary not only to change its width, but also to make certain adaptive height adjustments. Therefore, the two-way adjustment component 282 of the present invention includes a transverse swing component 2821 connected to the rear hinge seat 2733. The transverse swing component 2821 is locked to a longitudinal movable component 2822. The longitudinal movable component 2822 is fixed inside the filter hopper 23. The two-way adjustment component 282 realizes the change of width and height of the acid and alkali resistant filter plate 272 through the transverse swing component 2821 and the longitudinal movable component 2822, so that it can be adjusted to different angles at different stages, without the need for manual adjustment. The adjustment structure will not be corroded by the electrolyte solution.

[0073] The operating principle of the lateral swing member 2821 is similar to that of the longitudinal movable member 2822. The difference lies in that the connection between the lateral swing member 2821 and other components must be movable, while the connection between the longitudinal movable member 2822 and the lateral swing member 2821 is fixed. Specifically, the lateral swing member 2821 includes a lateral mounting plate 28211 locked onto the longitudinal movable member 2822, and a horizontal push rod 2821 is fixedly connected to the lateral mounting plate 28211. 2. The end of the horizontal push rod 28212 is provided with a universal hinge 28213. The universal hinge 28213 is connected to the outside of the high guard plate 273. The longitudinal movable member 2822 includes a fixed mounting seat locked to the rear side of the horizontal mounting plate 28211. The lower end of the fixed mounting seat is connected to a longitudinal push rod 28222. The longitudinal push rod 28222 is fixed on a longitudinal mounting plate 28223. The longitudinal mounting plate 28223 is in contact with the inner wall of the filter hopper 23.

[0074] To prevent the filter plate adjustment and installation structure 28 from becoming clogged, the holes in the acid and alkali resistant filter plate 272 should not be too small, otherwise the particles cannot be completely filtered out in one filtration. Therefore, this invention sets up an internal filtration structure 29 on the basis of the filter plate adjustment and installation structure 28. By rotating the installed circular filter plate 292, the downward flushing solution drives the circular filter plate 292 to rotate, so that the solution is dispersed and then filtered through several circular filter plates 292. The layer-by-layer filtration makes the electrolyte solution more pure.

[0075] When filtering the electrolyte solution after primary filtration, the circular filter plate 292 cannot simply use a fixed plate filtration method, otherwise problems with primary filtration may easily occur. Therefore, the circular filter plate 292 of the present invention includes a circular plate 2921 rotatably installed in the inner ring 291. The circular plate 2921 has a plurality of filter holes. A plurality of flow guide columns 2922 are fixedly connected to the top of the circular plate 2921. The circular plate 2921 is provided with a plurality of flow guide balls 2923. The flow guide balls 2923 are movably connected to the inner ring 291. The flow guide columns 2922 are provided on the top surface of the circular filter plate 292, which makes it easier for the plate to rotate when impacted by the solution. In order to improve the turnover effect, flow guide balls 2923 are also provided at the bottom of the circular filter plate 292. Compared with the friction between the plate surfaces, the friction between the ball surface and the plate surface makes it easier to rotate.

[0076] A regenerative low-temperature crystallization device includes: a crystallization tank 31, with a crystallization input pipe 32 at the top of the crystallization tank 31. The crystallization input pipe 32 is connected to a regeneration filter device via a flow pump. A swing assembly 33 is located at the center of the top of the crystallization tank 31, and a temperature regulating element 38 is connected to the lower end of the swing assembly 33. The device also includes: a swingable cooling structure 34, where the temperature regulating element 38 is a coil divided into an input section 381, a swirling section 382, ​​and a reflux section 383. The swingable cooling structure 34 includes a separating membrane 341 disposed within the coil, dividing the interior of the coil into a refrigerant zone 342 and a temperature control zone 343. The swing assembly 33... A nested cylinder 344 is provided at the lower end, the input section 381 is inserted into the nested cylinder 344, and the bottom of the reflux section 383 extends to the center of the crystallization tank 31 and into the nested cylinder 344. An inner support member 345 is provided on the outside of the reflux section 383, and the inner support member 345 is attached to the inner side of the swivel section 382. A lower rotating fixing structure 35 is provided, and the lower half of the crystallization tank 31 is connected with several threaded channels 311. The lower rotating fixing structure 35 includes a lower rotating plate 351 provided in the threaded channels 311. Several lower clamping pieces 352 are provided on the lower rotating plate 351, and the lower clamping pieces 352 are attached to the outer peripheral surface of the swivel section 382. The lower clamping pieces 352 are spaced apart.

[0077] In this embodiment, the temperature regulating element 38 is made of a single alloy tube. After it is made, a separator 341 is embedded inside, forming two spaces through the separator 341. Therefore, the beginning and end of the refrigerant zone 342 and the temperature control zone 343 are both extended to the outside of the short connecting rod 332 through pipelines. The refrigerant is introduced into the refrigerant zone 342, while the room temperature liquid is introduced into the temperature control zone 343. By controlling the amount of liquid introduced into the temperature control zone 343, the amount of refrigerant input can be controlled, thereby controlling the temperature of the crystallizer 31 to decrease more slowly.

[0078] While existing technologies can achieve constant-temperature crystallization, the overall settling time needs to exceed 24 hours, resulting in low crystallization efficiency. Furthermore, both feeding and unloading processes require continuous manual material transfer, which also takes considerable time. Therefore, this invention utilizes a swingable cooling structure 34 to directly add the filtered electrolyte solution into the crystallization tank 31, allowing the electrolyte solution to be cooled within the tank and thus crystallize. However, since static crystallization is slow, this invention incorporates a temperature control element 3... 8 can oscillate periodically under the drive of the oscillating component 33, thereby allowing the electrolyte solution to sway slightly, thus improving the crystallization efficiency. Furthermore, if the cooling is too rapid, the crystals will become small and powdery, easily trapping impurities and making filtration difficult. Therefore, the temperature regulating component 38 of this invention is divided into two paths. First, room temperature liquid is introduced through the temperature control zone 343, which restricts the amount of refrigerant that can flow into the refrigerant zone 342, making the cooling rate of the electrolyte solution slower. Then, the amount of liquid flowing into the temperature control zone 343 is gradually reduced, thereby lowering the temperature and making the generated crystals more uniform and stable in size.

[0079] As mentioned above, the temperature regulating component 38 can be swayed by the swing assembly 33. However, due to its multi-layered metal ring design, it is easily damaged by rotation. Therefore, the swing assembly 33 in this embodiment includes a swing motor 331 disposed on the top surface of the crystallization tank 31. The lower end of the swing motor 331 is connected to a short connecting rod 332. The portion of the short connecting rod 332 located outside the crystallization tank 31 is provided with a pendulum limiting member 333. The swing assembly 33 only swings slightly, that is, when the swing motor 331 rotates, it is limited by the short connecting rod 332 and the pendulum limiting member 333, and only swings less than 180 degrees. The rotation of the pendulum ensures a small swaying amplitude, which does not affect the static effect while also promoting crystallization. Specifically, the pendulum limiting component 333 includes a pendulum limiting rod 3331 located outside the short connecting rod 332. A limiting cylinder 3332 is located outside the pendulum limiting rod 3331, and two one-way limiting seats 3333 are located inside the limiting cylinder 3332. The pendulum is limited and fixed by the two one-way limiting seats 3333, thereby ensuring that the pendulum limiting rod 3331 can be limited even if the swing motor 331 is not precise when swinging.

[0080] The swaying assembly 33 and the temperature regulating component 38 need to be connected to achieve a stable swaying effect. Therefore, in this invention, the nested cylinder 344 is connected to the part of the short connecting rod 332 located inside the crystallization tank 31. The nested cylinder 344 includes a sleeve 3441 fixed to the short connecting rod 332. A suspension frame 3442 extends outward from the bottom edge of the nested cylinder 344. The suspension frame 3442 is connected to the swivel section 382. The input section 381 and the reflux section 383 are both connected to the short connecting rod 332 through the sleeve 3441. The swaying assembly 33 and the temperature regulating component 38 are connected through the nested cylinder 344. The temperature regulating component 38 is suspended by the suspension frame 3442, so that the temperature regulating component 38 can be suspended and connected to the short connecting rod 332 through the sleeve 3441, thereby achieving the effect of transmitting swaying.

[0081] The outer side of the temperature regulating component 38 can be supported by the inner wall of the crystallizing tank 31, but the inner side of the temperature regulating component 38 cannot be supported by other structures. Therefore, the inner support component 345 of the present invention includes an inner support cylinder 3451 sleeved on the outer side of the reflux section 383. The outer wall of the inner support cylinder 3451 is provided with a plurality of inner support rods 3452. The inner support rods 3452 are pressed against the lower clamping plate 352. The inner support component 345 includes an inner support cylinder 3451 sleeved on the outer side of the reflux section 383. An inner support cylinder 3451 is provided with a plurality of inner support rods 3452 on its outer wall. The inner support rods 3452 are pressed against the lower clamping plate 352. An inner support member 345 is provided on the outer side of the return section 383. The inner support member 345 is provided with the inner support cylinder 3451 and the inner support rods 3452 on the outer side of the return section 383, so as to fix the bottom part of the bottom wire inlet position of the swivel section 382, ​​thereby ensuring the stability of the swivel section 382 during the shaking process.

[0082] Although the swingable cooling structure 34 can improve the crystallization effect after rotation, since the swingable cooling structure 34 is a coil structure, it will experience downward swinging diffusion and deformation when rotating. Therefore, the present invention sets up a lower rotating fixing structure 35 on the basis of the swingable cooling structure 34. First, the entire coil can be pushed upward by the upward rotation of the lower rotating plate 351, so that the gap between the tubes is tightly fitted. Then, the bottom of the coil is supported by the restraint of the lower clamp 352, so that the bottom of the entire coil is more stable and will not be damaged when swinging, thus achieving a stable cooling effect.

[0083] During the support process of the lower rotating plate 351, it is not merely a solid plate, nor is it simply supported at one end. In this invention, the lower rotating plate 351 includes a hollow frame 3511 for supporting the bottom surface of the reflux section 383. An extrusion frame 3512 for supporting the reflux section 382 is connected to the outside of the hollow frame 3511. The extrusion frame 3512 is fixed on a rotating frame 3513. The rotating frame 3513 cooperates with the threaded channel 311. The lower rotating plate 351 first supports the bottom surface of the reflux section 383 through the hollow frame 3511, and at the edge, it is supported and fixed by the extrusion frame 3512. Finally, the rotating frame 3513 cooperates with the threaded channel 311 inside the crystallizer 31 to ensure the position of the adjusted lower rotating plate 351, thereby making the lower half of the entire temperature regulating component 38 very compact.

[0084] Based on the lower swivel plate 351, the lateral direction of the return section 383 is limited by the lower clamping plate 352. The return section 383 of the arc segment is limited by the clamping hoop 3522 set on the inner side, and is supported by the inner support rod 3452, thereby ensuring the stability of the entire lower swing position.

[0085] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A fluorine production electrolyte resource recycling system, characterized by, The application relates to a device for dissolving and regenerating electrolyte, which comprises a dissolving and regenerating reaction device connected with an electrolyte feeding end, a regenerating filtering device connected with the bottom of the dissolving and regenerating reaction device, a regenerating low-temperature crystallization device connected with the regenerating filtering device through a flow pump, a centrifuge connected with the discharging end of the regenerating low-temperature crystallization device, and a drying chamber connected with the solid discharging end of the centrifuge. The regenerating low-temperature crystallization device comprises a crystallization tank (31), an input pipe (32) arranged at the top of the crystallization tank (31), a swing assembly (33) arranged at the center of the top of the crystallization tank (31), a temperature adjusting piece (38) connected with the lower end of the swing assembly (33), and the like. The temperature adjusting piece (38) is a coil pipe, which is divided into an input section (381), a convolution section (382) and a return section (383). The swing assembly (33) comprises a separation membrane (341) arranged in the coil pipe, which divides the inner part of the coil pipe into a refrigerant area (342) and a temperature control area (343). The lower end of the swing assembly (33) is provided with a nesting cylinder (344), the input section (381) is inserted into the nesting cylinder (344), the bottom of the return section (383) extends to the center of the crystallization tank (31) and extends into the nesting cylinder (344), and the outer side of the return section (383) is provided with an inner support (345) which is attached to the inner side of the convolution section (382). The lower half of the crystallization tank (31) is connected with a plurality of screw channels (311), and the lower screw channels (311) comprise a lower rotating plate (351) arranged in the screw channels (311). The lower rotating plate (351) is provided with a plurality of lower clamping pieces (352) which are attached to the outer circumferential surface of the convolution section (382). The lower clamping pieces (352) are arranged at intervals. ​ 2. The fluorine-containing electrolyte resource recycling system according to claim 1, characterized by, The dissolution regeneration reaction device, comprising: an outer dissolution kettle body (10) for containing liquid, a mounting cover (11) is arranged on the top of the outer dissolution kettle body (10), an electrolyte feeding hopper (12), a mother liquor return pipe (13) and an alkali feeding pipe (14) are arranged on the top of the mounting cover (11), further comprising: an inner rotating dissolution tank (15), a lower rotating frame (101) is arranged on the bottom of the inner side of the outer dissolution kettle body (10), an upper rotating frame (102) is arranged on the top of the inner side of the outer dissolution kettle body (10), the inner rotating dissolution tank (15) comprises a steel lining Teflon pipe cylinder (151) movably arranged between the lower rotating frame (101) and the upper rotating frame (102), an outer rotating part (152) is arranged on the upper half of the outer side of the steel lining Teflon pipe cylinder (151), the outer rotating part (152) is driven by at least one driving part (153), the electrolyte, the mother liquor and the alkali material added through the electrolyte feeding hopper (12), the mother liquor return pipe (13) and the alkali feeding pipe (14) are fully mixed and dissolved in the outer rotating part (152) driven by the driving part (153); a movable steam structure (16), an opening is arranged on the top of the outer dissolution kettle body (10), the movable steam structure (16) comprises a steam guide pipe (161) movably inserted into the opening, the top end of the steam guide pipe (161) is connected with an external steam pipe, a steam distributor (162) is connected to the bottom of the steam guide pipe (161), the outer wall of the steam distributor (162) is tightly attached to the inner wall of the steel lining Teflon pipe cylinder (151), when the driving part (153) drives the steel lining Teflon pipe cylinder (151) to rotate, the steam distributor (162) provides a counterforce on the inner side, the end of the steam distributor (162) is tightly attached to the inner wall of the steel lining Teflon pipe cylinder (151).

3. The fluorine-containing electrolyte resource recycling system according to claim 1, characterized by, The regeneration filtering device comprises a filtering branch pipe (21) connected with a dissolving regeneration reaction device, the lower end of the filtering branch pipe (21) is connected with at least three filters (22), the filter (22) comprises a filter hopper (23) for containing liquid, the filter hopper (23) is provided with a filter plate (27), the lower end of the filter hopper (23) is connected with a collecting hopper (24), the lower end of the collecting hopper (24) is provided with a lower guide pipe (25), the lateral side of the lower guide pipe (25) is connected with an external discharge pipe (26), the external discharge pipe (26) is connected with a vacuum pumping device, further comprising a filter plate adjusting and mounting structure (28), the filter plate (27) comprises a middle connecting shaft (271), the two sides of the middle connecting shaft (271) are connected with acid and alkali resistant filter plates (272), the side of the acid and alkali resistant filter plate (272) away from the middle connecting shaft (271) is connected with a high guard plate (273), the filter plate adjusting and mounting structure (28) comprises a guide groove (281) for guiding the middle connecting shaft (271), the outer sides of the two high guard plates (273) are connected with two two-way adjusting members (282), the two-way adjusting members (282) make the two acid and alkali resistant filter plates (272) form an inverted V-shaped structure when the filtering branch pipe (21) is discharged, and make the two acid and alkali resistant filter plates (272) form a V-shaped structure after the filtering branch pipe (21) is discharged for a period of time; an inner branch filtering structure (29) comprises a plurality of inner annular rings (291) arranged at the lower end of the collecting hopper (24), the inner annular ring (291) is movably mounted with a circular filter plate (292), when the electrolyte solution passes through the circular filter plate (292), the circular filter plate (292) rotates on the inner annular ring (291).

4. The fluorine-containing electrolyte resource recycling system according to claim 2, characterized by, The outer rotating member (152) comprises an outer rotating ring (1521) arranged outside the steel lining tetrafluoro tube cylinder (151), the outer side of the outer rotating ring (1521) is provided with an outer rotating gear ring (1522), the steel cylinder (1511) comprises a steel cylinder (1511), the inner side of the steel cylinder (1511) is provided with a tetrafluoro tube lining (1512), the top of the steel cylinder (1511) extends outwardly and is provided with a supporting rail (1513), the thickness of the tetrafluoro tube lining (1512) is greater than that of the steel cylinder (1511), the driving member (153) comprises a driving frame (1531) arranged on the inner wall of the outer dissolving kettle body (10), the driving frame (1531) extends to the bottom surface of the outer rotating ring (1521), the driving frame (1531) is provided with a lining rotating motor (1532), the output end of the lining rotating motor (1532) is provided with a matching gear (1533), and the matching gear (1533) is engaged with the outer rotating gear ring (1522).

5. The fluorine-containing electrolyte resource recycling system according to claim 2, characterized by, The steam applicator (162) comprises an inner steam support frame (1621) inside the steel-lined Teflon pipe cylinder (151), which is at the same horizontal plane with the outer rotating part (152), and a plurality of steam branch pipes (1622) are arranged on the inner side of the inner steam support frame (1621) and communicated with the steam guide pipe (161), and the lower ends of the steam branch pipes (1622) are directed to the inner wall of the steel-lined Teflon pipe cylinder (151).

6. The fluorine-containing electrolyte resource recycling system according to claim 3, characterized by, The middle connecting shaft (271) comprises a hollow long cylinder (2711) connected with one acid and alkali resistant filter plate (272), and a long rod (2712) movably arranged in the long cylinder (2711), wherein the long rod (2712) is longer than the long cylinder (2711) and connected with another acid and alkali resistant filter plate (272), and the long rod (2712) is connected with the guide groove (281), and the acid and alkali resistant filter plate (272) comprises a square plate body (2721) connected with the middle connecting shaft (271), and a plurality of switchable filter holes (2722) are arranged in the plate body (2721), and three columns of switchable filter holes (2722) near the middle connecting shaft (271) are movably connected with clamping plates (2723), when the plate body (2721) is inverted V-shaped, the clamping plates (2723) close the corresponding switchable filter holes (2722), and when the plate body (2721) is V-shaped, the three columns of switchable filter holes (2722) near the middle connecting shaft (271) are in an open state.

7. The fluorine-containing electrolyte resource recycling system according to claim 3, characterized by, The high guard plate (273) comprises a swing shaft (2731) hinged to the outer side of the acid and alkali resistant filter plate (272), the swing shaft (2731) extends upwardly and is connected with a guard plate (2732), the back side of the guard plate (2732) is provided with a rear hinge seat (2733), the two direction adjusting parts (282) comprise a transverse swing part (2821) connected with the rear hinge seat (2733), the transverse swing part (2821) is locked in a longitudinal movable part (2822), the longitudinal movable part (2822) is fixed in the filter hopper (23), the transverse swing part (2821) comprises a transverse mounting plate (28211) locked on the longitudinal movable part (2822), a transversely arranged push rod (28212) is fixed on the transverse mounting plate (28211), the end of the transversely arranged push rod (28212) is provided with a universal hinge knob (28213), the universal hinge knob (28213) is connected to the outer side of the high guard plate (273), and the longitudinal movable part (2822) comprises a fixed mounting seat locked on the back side of the transverse mounting plate (28211), the lower end of the fixed mounting seat is connected with a longitudinal push rod (28222), the longitudinal push rod (28222) is fixed on a longitudinal mounting plate (28223), and the longitudinal mounting plate (28223) is connected with the inner wall of the filter hopper (23).

8. The fluorine-containing electrolyte resource recycling system according to claim 3, characterized by, The circular filter plate (292) comprises a circular plate (2921) rotatably installed in the inner ring (291), a plurality of filter holes are formed in the circular plate (2921), a plurality of guide columns (2922) are fixedly connected to the top of the circular plate (2921), and a plurality of guide balls (2923) are arranged on the circular plate (2921) and movably connected with the inner ring (291).

9. The fluorine-containing electrolyte resource recycling system according to claim 1, characterized by, The swing assembly (33) comprises a swing motor (331) arranged on the top surface of the crystallization tank (31), the lower end of the swing motor (331) is connected with a short connecting rod (332), the part of the short connecting rod (332) located outside the crystallization tank (31) is provided with a simple pendulum limiting piece (333), the nesting sleeve (344) is connected to the part of the short connecting rod (332) located inside the crystallization tank (31), the nesting sleeve (344) comprises a sleeve (3441) fixedly connected with the short connecting rod (332), the bottom edge of the nesting sleeve (344) extends outwardly and is provided with a hanging frame (3442), the hanging frame (3442) is connected with the revolving section (382), the input section (381) and the return flow section (383) are connected into the short connecting rod (332) through the sleeve (3441), and the inner support (345) comprises an inner support sleeve (3451) sleeved outside the return flow section (383), the outer wall of the inner support sleeve (3451) is provided with a plurality of inner support rods (3452), and the inner support rods (3452) are pressed on the lower clamping piece (352).

10. The fluorine-containing electrolyte resource recycling system according to claim 1, characterized by, The lower rotating plate (351) comprises a hollow frame (3511) for supporting the bottom surface of the return flow section (383), the outer side of the hollow frame (3511) is connected with an extrusion frame (3512) for supporting the revolving section (382), the extrusion frame (3512) is fixed on a rotating frame (3513), the rotating frame (3513) is matched with the threaded channel (311), and the lower clamping piece (352) comprises a clamping piece (3521) vertically arranged on the extrusion frame (3512), a plurality of clamping hoops (3522) are arranged on the inner side of the clamping piece (3521), and the clamping hoops (3522) are attached to the revolving section (382).

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