Separating device

Abstract

The utility model discloses a separation device which comprises a neutralization kettle, a filtering assembly, a light component removal tower and a heavy component removal tower which are sequentially arranged, and the neutralization kettle is used for neutralizing a solution; the filtering assembly is used for filtering the neutralized solution; the light component removal tower is used for carrying out light component removal treatment on the filtered solution; and the heavy component removal tower is used for carrying out heavy component removal treatment on the solution subjected to light component removal treatment. By adopting the separation device, a high-acidity solution is neutralized through the neutralization kettle to reduce the acidity, then the neutralized solution is filtered, then light components and heavy components in the solution are separated through the light component removal tower and the heavy component removal tower in sequence, and finally a product is obtained, so that the high-acidity waste liquid is recycled. As the solution is firstly neutralized to reduce the acidity, the corrosion to the filter assembly, the light component removal tower and the heavy component removal tower can be effectively avoided, so that the service life of equipment is prolonged, and the recovery cost is reduced. After impurities in the solution are filtered, light component removal treatment and heavy component removal treatment are performed, so that the purity of the product can be improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of waste liquid recovery, and particularly relates to a separation device. BACKGROUND

[0002] A large amount of waste liquid is usually generated in a chemical production process, especially in an electrolyte production process, and a large amount of high-acidity waste liquid is generated. Since the preparation of the electrolyte has a high requirement on acidity, the high-acidity waste liquid generated in the production process cannot be recycled. Therefore, a device capable of recycling the high-acidity waste liquid is urgently needed. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the separation device capable of recycling the high-acidity waste liquid is provided.

[0004] The technical scheme provided in the application is as follows:

[0005] The separation device comprises:

[0006] A neutralization kettle for neutralizing a solution;

[0007] A filtering assembly arranged downstream of the neutralization kettle and used for filtering the neutralized solution;

[0008] A light component removal tower arranged downstream of the filtering assembly and used for removing light components from the filtered solution;

[0009] A heavy component removal tower arranged downstream of the light component removal tower and used for removing heavy components from the solution subjected to the light component removal.

[0010] The separation device is used to neutralize the high-acidity solution in the neutralization kettle to reduce the acidity, filter the neutralized solution to remove impurities, and then separate the light components and the heavy components from the solution in the light component removal tower and the heavy component removal tower, so as to obtain the product and realize the recycling of the high-acidity waste liquid. Since the solution is neutralized to reduce the acidity, the corrosion of the filtering assembly, the light component removal tower and the heavy component removal tower can be effectively avoided, so that the service life of the equipment is prolonged and the recycling cost is reduced. Meanwhile, the solution is filtered to remove impurities, and then subjected to the light component removal and the heavy component removal, so that the purity of the product can be improved.

[0011] Further, the separation device further comprises a first conveying pump and a first communication assembly. The first conveying pump is connected with a discharge end of the neutralization kettle. The first communication assembly is connected with a discharge end of the first conveying pump, a feed end of the neutralization kettle and a feed end of the filtering assembly. The first communication assembly can alternately communicate the discharge end of the first conveying pump with the feed end of the neutralization kettle and the feed end of the filtering assembly.

[0012] Further, the filtering assembly comprises a first filter, a second filter and a third filter, the first filter is arranged downstream of the neutralization kettle and is used to filter out substances with a particle size greater than a first preset particle size; the second filter is arranged downstream of the first filter and is used to filter out substances with a particle size greater than a second preset particle size; and the third filter is arranged downstream of the second filter and is used to filter out substances with a particle size greater than a third preset particle size.

[0013] Further, the filtering assembly further comprises a buffer tank and a second conveying pump, the buffer tank is arranged downstream of the second filter, and the second conveying pump is arranged between the buffer tank and the third filter.

[0014] Further, the filtering assembly further comprises a communication module, the communication module is connected with a discharge end of the second conveying pump, a feed end of the buffer tank and a feed end of the third filter, and the communication module can alternately communicate the discharge end of the second conveying pump with the feed end of the buffer tank and the feed end of the third filter.

[0015] Further, the filtering assembly further comprises a drying kettle, the drying kettle is connected with the first filter and is used to receive and dry substances with a particle size greater than the first preset particle size.

[0016] Further, the separation device further comprises a third conveying pump and a second communication assembly, the third conveying pump is connected with a discharge end of the light component removal tower, and the second communication assembly is connected with a discharge end of the third conveying pump, a feed end of the light component removal tower and a feed end of the heavy component removal tower, and the second communication assembly can alternately communicate the discharge end of the third conveying pump with the feed end of the light component removal tower and the feed end of the heavy component removal tower.

[0017] Further, the separation device further comprises a first reboiler, the first reboiler is arranged in the light component removal tower.

[0018] Further, the separation device further comprises a fourth conveying pump and a third communication assembly, the fourth conveying pump is connected with a discharge end of the heavy component removal tower, and the third communication assembly is connected with a discharge end of the fourth conveying pump, a feed end of the heavy component removal tower and a heavy component receiving device, and the third communication assembly can alternately communicate the discharge end of the fourth conveying pump with the feed end of the light component removal tower and the heavy component receiving device.

[0019] Further, the separation device further comprises a second reboiler, the second reboiler is arranged in the heavy component removal tower.

[0020] In summary, the separation device provided by the present application has at least the following advantages:

[0021] 1. The high-acidity solution is neutralized before subsequent operation, effectively avoiding corrosion of the equipment, prolonging the service life of the equipment and reducing the recovery cost;

[0022] 2. The impurities in the solution are removed by multi-stage filtration, which improves the purity of the product and reduces the blocking of high-precision filters by large-particle substances, improving the reliability of the separation device operation;

[0023] 3. The filter with filter core is used for filtration, and the first filter can also backflush, reducing the replacement frequency of the filter core and thereby reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, which is used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application.

[0025] Figure 1 The structure schematic diagram of the separation device provided by an embodiment of the present application is shown.

[0026] Label explanation:

[0027] 11. Neutralization kettle; 12. Filter assembly; 13. Light removal tower; 14. Heavy removal tower; 15. First conveying pump; 16. First communication assembly; 17. Circulation pipe; 18. Communication pipe; 19. First filter; 20. Second filter; 21. Third filter; 22. Drying kettle; 23. Buffer tank; 24. Second conveying pump; 25. Communication module; 26. Third conveying pump; 27. Second communication assembly; 28. Fourth conveying pump; 29. Third communication assembly; 30. First reboiler; 31. Second reboiler. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] As shown in Figure 1 The present application provides a separation device, which comprises a neutralization kettle 11, a filter assembly 12, a light component removal tower 13 and a heavy component removal tower 14 arranged in sequence.

[0031] The neutralization kettle 11 is used for neutralizing the solution, for example, for high-acidity solutions, including but not limited to ester solvents such as methyl ethyl carbonate, dimethyl carbonate, ethylene carbonate, diethyl carbonate, ethyl acetate, etc. Alkaline materials are input into the neutralization kettle 11 to react with the solution to reduce the acidity of the solution, thereby avoiding corrosion of the solution to the subsequent filter assembly 12, light component removal tower 13 and heavy component removal tower 14.

[0032] The filter assembly 12 is used for filtering the neutralized solution to remove as much precipitate in the solution as possible, thereby ensuring the purity of the subsequent product.

[0033] The light component removal tower 13 is used for light component removal treatment of the filtered solution to separate the light components in the solution, and the solution after light component removal treatment is delivered to the downstream heavy component removal tower 14; the heavy component removal tower 14 can perform heavy component removal treatment on the solution after light component removal treatment to separate the heavy components in the solution and obtain the product.

[0034] By using the above separation device, the high-acidity solution is first neutralized by the neutralization kettle 11 to reduce the acidity, and then the neutralized solution is filtered to remove impurities; next, the light components and heavy components in the solution are separated by the light component removal tower 13 and the heavy component removal tower 14 in sequence, and finally the product is obtained, thereby realizing the recycling of the high-acidity waste liquid. At the same time, since the solution is first neutralized to reduce the acidity, the corrosion of the filter assembly 12, the light component removal tower 13 and the heavy component removal tower 14 can be effectively avoided, thereby prolonging the service life of the equipment and reducing the recycling cost. In addition, after the solution is filtered to remove impurities, light component removal treatment and heavy component removal treatment are performed, which can improve the purity of the product.

[0035] It can be understood that the above recycling of the high-acidity waste liquid refers to the recycling of an important component in the waste liquid. In addition, the separation device can also be used for recycling of high-alkalinity solutions, and the neutralization in the neutralization kettle 11 by adding acidic materials can be performed.

[0036] In one embodiment, the separating device further comprises a first conveying pump 15 connected to the outlet end of the neutralizing kettle 11 and a first communication assembly 16 connected to the outlet end of the first conveying pump 15, the inlet end of the neutralizing kettle 11 and the inlet end of the filtering assembly 12, and capable of alternately communicating the outlet end of the first conveying pump 15 with the inlet end of the neutralizing kettle 11 and the inlet end of the filtering assembly 12.

[0037] When the first communication assembly 16 communicates the outlet end of the first conveying pump 15 with the inlet end of the neutralizing kettle 11, the outlet end of the first conveying pump 15 and the inlet end of the filtering assembly 12 can be in a cut-off state, and the material in the neutralizing kettle 11 can be circulated and flowed under the action of the first conveying pump 15, so as to make the mixing of the material more uniform and improve the effect of the neutralization reaction in cooperation with the stirring in the neutralizing kettle 11; when the first communication assembly 16 cuts off the outlet end of the first conveying pump 15 and the inlet end of the neutralizing kettle 11, the outlet end of the first conveying pump 15 and the inlet end of the filtering assembly 12 can be in a communication state, and the solution neutralized in the neutralizing kettle 11 can be conveyed to the filtering assembly 12 under the action of the first conveying pump 15.

[0038] In actual application, the first communication assembly 16 comprises a tee joint, a circulation valve, a communication valve, a circulation pipe 17 and a communication pipe 18, the circulation valve, the communication valve and the outlet end of the first conveying pump 15 are connected to the tee joint, one end of the circulation pipe 17 is connected to the circulation valve, the other end is connected to the inlet end of the neutralizing kettle 11, one end of the communication pipe 18 is connected to the communication valve, the other end is connected to the inlet end of the filtering assembly 12. In this way, when the circulation valve is opened and the communication valve is closed, the outlet end of the first conveying pump 15 is communicated with the inlet end of the neutralizing kettle 11, and the outlet end of the first conveying pump 15 is cut off from the inlet end of the filtering assembly 12; when the circulation valve is closed and the communication valve is opened, the outlet end of the first conveying pump 15 is cut off from the inlet end of the neutralizing kettle 11, and the outlet end of the first conveying pump 15 is cut off from the inlet end of the filtering assembly 12.

[0039] It can be understood that the first communication assembly 16 adopts the above structure, which can realize the simultaneous communication or cut-off of the outlet end of the first conveying pump 15 with the inlet end of the neutralizing kettle 11 and the inlet end of the filtering assembly 12, but in actual operation, the outlet end of the first conveying pump 15 is preferably alternately communicated with the inlet end of the neutralizing kettle 11 and the inlet end of the filtering assembly 12.

[0040] In one embodiment, the filtering assembly 12 comprises a first filter 19, a second filter 20 and a third filter 21. The first filter 19 is arranged downstream of the neutralization kettle 11, and the first communication assembly 16 is connected to the feed end of the first filter 19. The first filter 19 is used to filter out substances with a particle size greater than a first preset particle size. The second filter 20 is arranged downstream of the first filter 19 and is used to filter out substances with a particle size greater than a second preset particle size. The third filter 21 is arranged downstream of the second filter 20 and is used to filter out substances with a particle size greater than a third preset particle size.

[0041] It can be determined that the first filter 19, the second filter 20 and the third filter 21 are arranged in sequence, so the filtering accuracy of the first filter 19, the second filter 20 and the third filter 21 increases in turn, that is, the first preset particle size > the second preset particle size > the third preset particle size. In a specific embodiment, the first preset particle size is 10 μm, the second preset particle size is 0.5 μm, and the third preset particle size is 0.2 μm. Through step-by-step filtering, impurities in the solution can be filtered out as much as possible to improve the purity of the product, and substances with a larger particle size can be prevented from blocking filters with higher filtering accuracy.

[0042] Optionally, the first filter 19, the second filter 20 and the third filter 21 all use filters with filter cores. The first filter 19 preferably has a backflush function to reduce the frequency of replacing the filter core and reduce costs. In addition, three-stage filtering is adopted, and the last third-stage filtering uses a filter core with high accuracy. Compared with the method of removing impurities by thin film evaporation, this method consumes less energy and has lower costs. It should be explained that the amount of substances with a particle size greater than 10 μm is large, and these substances can be recovered through the drying kettle 22. Therefore, backflush is arranged to improve the recovery rate of the substances and prolong the service life of the filter core. The filtering accuracy of the second filter 20 and the third filter 21 is high, the amount of substances filtered by them is small, and the recovery value is low. Therefore, the service life of the filter core is long, and backflush is not arranged. Of course, in other embodiments, backflush structures can also be arranged at the second filter 20 and the third filter 21, and containers can be arranged to receive the solution backflushed out.

[0043] In one embodiment, the filtering assembly 12 further comprises a drying kettle 22 connected to the first filter 19 for receiving and drying substances with a particle size greater than the first preset particle size. It should be explained that in a specific example, low-cost calcium oxide is used for neutralization reaction with the solution. During the reaction process, low-temperature water such as 5℃ water is used for cooling to control the reaction temperature below 40℃. After the reaction is completed, solid precipitates are produced. Most of the precipitates are filtered out by the first filter 19 and input into the drying kettle 22. After drying by the drying kettle 22, the precipitates are recovered, further improving resource utilization and reducing costs.

[0044] In one embodiment, the filtering assembly 12 further comprises a buffer tank 23 and a second conveying pump 24, the buffer tank 23 is arranged downstream of the second filter 20 for receiving the solution after twice filtration, and the second conveying pump 24 is arranged between the buffer tank 23 and the third filter 21 for conveying the solution in the buffer tank 23 to the third filter 21. It is to be explained that the third filter 21 has a higher filtering precision, and in order to improve the passing rate of the solution, the second conveying pump 24 is arranged before the third filter 21 to increase the conveying pressure of the solution.

[0045] Further, the filtering assembly 12 further comprises a communication module 25, the communication module 25 is connected with the discharge end of the second conveying pump 24, the feeding end of the buffer tank 23 and the feeding end of the third filter 21, and the communication module 25 can make the discharge end of the second conveying pump 24 alternately communicate with the feeding end of the buffer tank 23 and the feeding end of the third filter 21. It can be understood that the structure and principle of the communication module 25 are the same as those of the first communication assembly 16, and will not be described here. In addition, it is to be explained that the solution in the buffer tank 23 circulates, which can avoid stratification and precipitation of the solution in the buffer tank 23.

[0046] In one embodiment, the separation device further comprises a third conveying pump 26 and a second communication assembly 27, the third conveying pump 26 is connected with the discharge end of the light-removing tower 13, and the second communication assembly 27 is connected with the discharge end of the third conveying pump 26, the feeding end of the light-removing tower 13 and the feeding end of the heavy-removing tower 14, and the second communication assembly 27 can make the discharge end of the third conveying pump 26 alternately communicate with the feeding end of the light-removing tower 13 and the feeding end of the heavy-removing tower 14.

[0047] Similarly, when the second communication assembly 27 communicates the discharge end of the third conveying pump 26 and the feeding end of the light-removing tower 13, the feeding end of the third conveying pump 26 and the feeding end of the heavy-removing tower 14 can be in a cut-off state, and the solution in the light-removing tower 13 circulates under the action of the third conveying pump 26, thereby improving the effect of light-removing treatment; when the second communication assembly 27 communicates the discharge end of the third conveying pump 26 and the feeding end of the heavy-removing tower 14, the discharge end of the third conveying pump 26 and the feeding end of the light-removing tower 13 can be in a cut-off state, so as to convey the solution after light-removing treatment to the heavy-removing tower 14. It can be understood that the structure and principle of the second communication assembly 27 are the same as those of the first communication assembly 16, and will not be described here.

[0048] It is to be explained that, as shown in FIG. 1, the filtering assembly 12 further comprises a first conveying pump 22, the first conveying pump 22 is connected with the discharge end of the first filter 10, and the first conveying pump 22 is connected with the feeding end of the second filter 20 and the feeding end of the third filter 21. Figure 1As shown, the light components in the light removal column 13 are discharged from the top of the light removal column 13, and the solution after light removal treatment is discharged from the bottom, i.e. the light removal column 13 has two discharge ends, the discharge end at the top is a gas phase discharge end, and the discharge end at the bottom is a liquid phase discharge end, and the third delivery pump 26 is connected with the discharge end at the bottom of the light removal column 13, i.e. with the liquid phase discharge end. Similarly, the light removal column 13 also has two feeding ends, one of which is connected with the filtration assembly 12 to receive the filtered solution, and the other of which is connected with the second communication assembly 27 to realize the circulating flow of the solution.

[0049] In one embodiment, the separation device further comprises a fourth delivery pump 28 and a third communication assembly 29, the fourth delivery pump 28 is connected with the discharge end of the heavy removal column 14, the third communication assembly 29 is connected with the discharge end of the fourth delivery pump 28, the feeding end of the heavy removal column 14 and the heavy component receiving device, and the third communication assembly 29 can alternately communicate the discharge end of the fourth delivery pump 28 with the feeding end of the light removal column 13 and the heavy component receiving device.

[0050] Similarly, when the third communication assembly 29 communicates the discharge end of the fourth delivery pump 28 with the feeding end of the heavy removal column 14, the feeding end of the fourth delivery pump 28 and the heavy component receiving device can be in a cut-off state, and the solution in the heavy removal column 14 circulates under the action of the fourth delivery pump 28, thereby improving the effect of heavy removal treatment; when the third communication assembly 29 communicates the discharge end of the fourth delivery pump 28 with the heavy component receiving device, the discharge end of the fourth delivery pump 28 and the feeding end of the heavy removal column 14 can be in a cut-off state to deliver the separated heavy components to the heavy component receiving device. It can be understood that the structure and principle of the third communication assembly 29 are the same as those of the first communication assembly 16, and will not be described here.

[0051] It should be noted that, as shown, Figure 1 As shown, the heavy components in the heavy removal column 14 are discharged from the bottom of the heavy removal column 14, and the product is discharged from the top, i.e. the heavy removal column 14 has two discharge ends; the fourth delivery pump 28 is connected with the discharge end at the bottom of the heavy removal column 14, which can not only realize the circulating flow of the solution and improve the effect of heavy removal treatment, but also can discharge the heavy components to the heavy component receiving device after the heavy components and the product are separated. At the same time, the heavy removal column 14 also has two feeding ends, one of which is connected with the second communication assembly 27 to receive the solution after light removal treatment, and the other of which is connected with the third communication assembly 29 to make the solution circulate.

[0052] In one specific example, the separation device further comprises a first reboiler 30 and a second reboiler 31, which are respectively arranged in the light-removing column 13 and the heavy-removing column 14 to heat the heating medium in the light-removing column 13 and the heavy-removing column 14. It should be explained that, in the present embodiment, the light-removing column 13 and the heavy-removing column 14 separate the components in the solution by distillation, and therefore the reboilers are arranged to heat the heating medium.

[0053] In order to facilitate the understanding of the technical solutions of the present application, the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Figure 1 The process flow of the separation device in the above embodiment will be described below.

[0054] The solution containing dimethyl carbonate and alkaline materials (for example, calcium oxide) are added into the neutralization kettle 11, the stirring paddle of the neutralization kettle 11 is started, the circulation valve is opened, and the communication valve is kept closed, i.e., the first communication module 16 connects the outlet end of the first conveying pump 15 and the inlet end of the neutralization kettle 11, so that the solution circulates. During the neutralization reaction, 5℃ cooling water is continuously added into the neutralization kettle 11 to keep the temperature of the neutralization reaction below 40℃.

[0055] After the neutralization reaction is completed, the stirring of the neutralization kettle 11 is stopped, the circulation valve is closed, and the communication valve is opened, so that the solution is conveyed to the first filter 19 under the action of the first conveying pump 15. The first filter 19 filters out the substances with a particle size greater than 10μm into the drying kettle 22, which is recycled after drying. The solution passing through the first filter 19 is continuously conveyed to the second filter 20, and the second filter 20 filters out the substances with a particle size greater than 0.5μm. The solution passing through the second filter 20 is conveyed to the buffer tank 23.

[0056] Before the solution in the buffer tank 23 reaches the preset liquid level, the communication module 25 connects the outlet end of the second conveying pump 24 and the inlet end of the buffer tank 23, so that the solution in the buffer tank 23 circulates. After the solution in the buffer tank 23 reaches the preset liquid level, the communication module 25 connects the outlet end of the second conveying pump 24 and the inlet end of the third filter 21, so that the solution is conveyed to the third filter 21. The third filter 21 filters out the substances with a particle size greater than 0.2μm. The solution passing through the third filter 21 is conveyed to the light-removing column 13.

[0057] The light-removing column 13 performs light-removing treatment on the solution to separate methanol, ethanol and water in the solution. During the separation process, the second communication module 27 connects the outlet end of the third conveying pump 26 and the inlet end of the light-removing column 13, so that the solution circulates to improve the light-removing treatment effect. After the light-removing treatment is completed, the second communication module 27 connects the outlet end of the third conveying pump 26 and the inlet end of the heavy-removing column 14, and the solution after the light-removing treatment is conveyed to the heavy-removing column 14 under the action of the third conveying pump 26.

[0058] The heavy component separation tower 14 separates the remaining components of the solution to separate the heavy components, such as the epoxy encapsulant and diethyl carbonate. During the separation process, the third communication assembly 29 can be used to connect the outlet end of the fourth delivery pump 28 to the inlet end of the heavy component separation tower 14 to circulate the components and improve the separation efficiency. After the separation process, the dimethyl carbonate is discharged from the top of the heavy component separation tower 14, and the third communication assembly 29 is used to connect the outlet end of the fourth delivery pump 28 to the heavy component receiving device. The separated heavy components are delivered to the heavy component receiving device by the fourth delivery pump 28.

[0059] It should be noted that the final dimethyl carbonate has a content of ≥99.99%, a moisture content of <15ppm, a H + a concentration of <0.0003mol / L, and a methanol content of <50ppm.

[0060] In summary, the separation device provided by the present application has at least the following advantages:

[0061] 1. The high-acidity solution is neutralized before subsequent operations, effectively avoiding corrosion of the equipment, prolonging the service life of the equipment, and reducing the recovery cost.

[0062] 2. The impurities in the solution are removed by multi-stage filtration, which not only improves the purity of the product, but also reduces the blockage of high-precision filters by large-particle substances, improving the reliability of the operation of the separation device.

[0063] 3. The filter with a filter element is used for filtration, and the first filter 19 can also be backflushed, reducing the replacement frequency of the filter element and thereby reducing the cost.

[0064] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A separation device, characterized in that, include: A neutralization vessel is used to neutralize a solution. A filtration assembly, located downstream of the neutralization vessel, is used to filter the neutralized solution. A light-weight removal tower is located downstream of the filtration assembly and is used to remove light-weight components from the filtered solution. A heavy removal tower is located downstream of the light removal tower and is used to remove heavy substances from the solution that has undergone the light removal treatment.

2. The separation device according to claim 1 further includes a first conveying pump and a first connecting component, wherein the first conveying pump is connected to the discharge end of the neutralization vessel, and the first connecting component is connected to the discharge end of the first conveying pump, the inlet end of the neutralization vessel, and the inlet end of the filter component, and the first connecting component enables the discharge end of the first conveying pump to be alternately connected to the inlet end of the neutralization vessel and the inlet end of the filter component.

3. The separation device according to claim 1, characterized in that, The filtration assembly includes a first filter, a second filter, and a third filter. The first filter is located downstream of the neutralization vessel and is used to filter out substances with a particle size larger than a first preset particle size. The second filter is located downstream of the first filter and is used to filter out substances with a particle size larger than a second preset particle size. The third filter is located downstream of the second filter and is used to filter out substances with a particle size larger than a third preset particle size.

4. The separation device according to claim 3, characterized in that, The filtration assembly further includes a buffer tank and a second delivery pump. The buffer tank is located downstream of the second filter, and the second delivery pump is located between the buffer tank and the third filter.

5. The separation device according to claim 4, characterized in that, The filtration assembly further includes a communication module, which is connected to the discharge end of the second conveying pump, the inlet end of the buffer tank, and the inlet end of the third filter. The communication module enables the discharge end of the second conveying pump to be alternately connected to the inlet end of the buffer tank and the inlet end of the third filter.

6. The separation device according to claim 3, characterized in that, The filtration assembly also includes a drying vessel, which is connected to the first filter and is used to receive and dry substances with a particle size larger than the first preset particle size.

7. The separation device according to claim 1, characterized in that, It also includes a third conveying pump and a second connecting assembly. The third conveying pump is connected to the discharge end of the light-weight removal tower, and the second connecting assembly is connected to the discharge end of the third conveying pump, the feed end of the light-weight removal tower, and the feed end of the heavy-weight removal tower. The second connecting assembly enables the discharge end of the third conveying pump to be alternately connected to the feed end of the light-weight removal tower and the feed end of the heavy-weight removal tower.

8. The separation device according to claim 1, characterized in that, It also includes a first reboiler, which is disposed in the light-weight removal tower.

9. The separation device according to claim 1, characterized in that, It also includes a fourth conveying pump and a third connecting assembly. The fourth conveying pump is connected to the discharge end of the heavy component removal tower, and the third connecting assembly is connected to the discharge end of the fourth conveying pump, the feed end of the heavy component removal tower, and the heavy component receiving device. The third connecting assembly enables the discharge end of the fourth conveying pump to be alternately connected to the feed end of the light component removal tower and the heavy component receiving device.

10. The separation device according to claim 1, characterized in that, It also includes a second reboiler, which is disposed in the deweight tower.

Images