Lithium battery electrolyte dedusting and condensing device

Abstract

The utility model provides a dust removal and condensation device for lithium battery electrolyte. The dust removal and condensation device comprises a tail gas output mechanism, a dust removal mechanism and a condensation recovery mechanism. The dust removal mechanism comprises a high-temperature dust remover, and the gas outlet end of the tail gas output mechanism communicates with the gas inlet end of the high-temperature dust remover. The condensation recovery mechanism comprises a first-stage tubular heat exchanger and a second-stage tubular heat exchanger; the air outlet end of the high-temperature dust remover is communicated with the tube pass air inlet end of the first-stage tubular heat exchanger, the tube pass air outlet end of the first-stage tubular heat exchanger is communicated with the tube pass air inlet end of the second-stage tubular heat exchanger, and the shell pass of the first-stage tubular heat exchanger is communicated with the cooling water system. And the shell side of the second-stage tubular heat exchanger is communicated with the anti-explosion cold water circulation system. Wherein the high-temperature dust remover can be used for efficiently filtering and collecting battery powder mixed in tail gas; the first-stage tubular heat exchanger and the second-stage tubular heat exchanger can perform heat exchange and condensation on tail gas twice, so that the use safety and reliability of the dust removal and condensation device for the lithium battery electrolyte are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery recycling and processing, in particular to a lithium battery electrolyte dust removal and condensation device. Background Art

[0002] As one of the important components of lithium batteries, the electrolyte mainly includes solvents such as ethylene carbonate, ethyl methyl carbonate, propylene carbonate, dimethyl carbonate and lithium hexafluorophosphate (LiPF6) solute. Usually, lithium battery recycling must first pre-treat the battery, and the battery pre-treatment process needs to go through a pyrolysis process to volatilize the electrolyte in the battery. That is, the high-temperature treatment process will induce the electrolyte to decompose to varying degrees. The decomposition products mainly include carbon oxides, hydrocarbons, hydrocarbons and other organic waste gases with high concentrations and complex components. If these waste gases cannot be effectively treated and discharged, they will cause serious pollution to the environment and cause serious harm to the human body. Therefore, in the process of recycling power lithium batteries, the tail gas must be treated in an environmentally friendly manner.

[0003] For example, Chinese patent document CN202222505295.0 discloses a coupling device for the charged crushing and electrolyte recovery of waste lithium-ion batteries, comprising a waste battery crushing mechanism, an electrolyte recovery mechanism and an exhaust gas treatment device; the waste battery crushing mechanism comprises a hollow cubic shell, a feed inlet is arranged at the center of the top of the shell, and a discharge port is arranged at the center of the bottom; a tearing crusher is installed in the cavity of the shell; a protective device is arranged on the inner wall of the shell; the electrolyte recovery mechanism comprises an electrolyte condensation box, a water-cooled condenser is arranged in the electrolyte condensation box, an electrolyte collecting tank is arranged at the bottom, an exhaust pipe is connected to the top, and the exhaust pipe leads to the exhaust gas treatment device; an exhaust pipe is embedded in the upper part of the side wall of one side of the shell, the head end of the exhaust pipe penetrates into the shell, and the tail end is connected to the condenser pipe of the water-cooled condenser; the battery is charged and the electrolyte is efficiently recovered, which is safe, environmentally friendly and efficient in operation.

[0004] However, the technical solution disclosed in the above patent still has the following problems: first, when the filter membrane adsorbs a certain amount of particulate matter, the filter membrane needs to be disassembled and cleaned, resulting in low working efficiency of the filter; second, the water-cooled condenser only has one heat exchange process and cannot effectively ensure that the electrolyte can be fully condensed, resulting in poor safety and reliability of the coupling device for the charged crushing of waste lithium-ion batteries and electrolyte recovery. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a lithium battery electrolyte dust removal and condensation device which can efficiently filter battery powder and has better safety and reliability in use.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A lithium battery electrolyte dust removal and condensation device, comprising:

[0008] Exhaust gas output mechanism;

[0009] A dust removal mechanism, wherein the dust removal mechanism comprises a high-temperature dust collector, and the gas outlet end of the tail gas output mechanism is connected to the gas inlet end of the high-temperature dust collector;

[0010] A condensation recovery mechanism, the condensation recovery mechanism includes a primary shell and tube heat exchanger and a secondary shell and tube heat exchanger; the air outlet end of the high-temperature dust collector is connected to the tube side air inlet end of the primary shell and tube heat exchanger, the tube side air outlet end of the primary shell and tube heat exchanger is connected to the tube side air inlet end of the secondary shell and tube heat exchanger, the shell side of the primary shell and tube heat exchanger is connected to the cooling water system, and the shell side of the secondary shell and tube heat exchanger is connected to the explosion-proof cold water circulation system.

[0011] In one of the embodiments, the exhaust gas output mechanism includes a spiral cleaner, and the gas outlet end of the spiral cleaner is connected to the gas inlet end of the high-temperature dust collector.

[0012] In one embodiment, the exhaust gas output mechanism further includes a low-temperature drying furnace, and the gas outlet end of the low-temperature drying furnace is connected to the gas inlet end of the spiral cleaner.

[0013] In one embodiment, the exhaust gas output mechanism further includes an explosion-proof oil temperature machine, the oil outlet end of the explosion-proof oil temperature machine is connected to the oil inlet end of the spiral cleaner, and the oil return end of the explosion-proof oil temperature machine is connected to the oil outlet end of the spiral cleaner.

[0014] In one of the embodiments, the dust removal mechanism further includes a nitrogen heater, and the nitrogen heater is used to provide pulse blowing for the filter cartridge of the high-temperature dust collector.

[0015] In one of the embodiments, the dust removal mechanism also includes a battery powder collecting assembly, the feed end of the battery powder collecting assembly is connected to the discharge end of the high-temperature dust collector, and the discharge end of the high-temperature dust collector is located above the battery powder collecting assembly.

[0016] In one embodiment, the condensation recovery mechanism also includes a first electrolyte storage tank, a second electrolyte storage tank and a third electrolyte storage tank; the tube-side liquid outlet of the first-stage shell-and-tube heat exchanger is connected to the liquid inlet of the first electrolyte storage tank, and the tube-side liquid outlet of the first-stage shell-and-tube heat exchanger is arranged above the first electrolyte storage tank; the tube-side liquid outlet of the second-stage shell-and-tube heat exchanger is connected to the liquid inlet of the second electrolyte storage tank, and the tube-side liquid outlet of the second-stage shell-and-tube heat exchanger is arranged above the second electrolyte storage tank, and the overflow end of the first electrolyte storage tank and the overflow end of the second electrolyte storage tank are respectively connected to the liquid inlet of the third electrolyte storage tank.

[0017] In one embodiment, the lithium battery electrolyte dust removal and condensation device also includes a nitrogen gas supply system, and multiple gas supply ports of the nitrogen gas supply system are respectively connected to the tube side gas inlet end of the first-stage shell and tube heat exchanger, the liquid inlet end of the first electrolyte storage tank, and the liquid inlet end of the second electrolyte storage tank.

[0018] In one of the embodiments, a first fan is provided between the air outlet end of the high-temperature dust collector and the air inlet end of the tube side of the first-stage shell-and-tube heat exchanger.

[0019] In one embodiment, the condensation recovery mechanism also includes a second fan and an exhaust gas buffer tank; a first air outlet is provided at the gas outlet end of the tube side of the secondary shell and tube heat exchanger, and the first air outlet is arranged adjacent to the liquid outlet end of the tube side of the secondary shell and tube heat exchanger, and the first air outlet is connected to the air inlet end of the second fan, and the air outlet end of the second fan is connected to the air inlet end of the exhaust gas buffer tank.

[0020] Compared with the prior art, the utility model has at least the following advantages:

[0021] 1. The exhaust gas is transported to the air inlet end of the high-temperature dust collector through the exhaust gas outlet end of the exhaust gas output mechanism, so that the high-temperature dust collector can efficiently and reliably filter and collect the battery powder mixed in the exhaust gas.

[0022] 2. The shell side of the first-stage shell-and-tube heat exchanger is connected to the cooling water system, so that the exhaust gas transported to the first-stage shell-and-tube heat exchanger undergoes a heat exchange and condensation; among them, a part of the exhaust gas that is not fully condensed by heat exchange is continuously transported to the second-stage shell-and-tube heat exchanger for secondary heat exchange in the explosion-proof cold water circulation system, so that the exhaust gas can be fully condensed, thereby improving the safety and reliability of the lithium battery electrolyte dust removal and condensation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic structural diagram of a lithium battery electrolyte dust removal and condensation device in one embodiment;

[0025] Figure 2 A partial structural schematic diagram of a lithium battery electrolyte dust removal and condensation device is shown;

[0026] Figure numerals: lithium battery electrolyte dust removal and condensation device 10; exhaust gas output mechanism 100; spiral cleaner 110; low-temperature drying furnace 120; explosion-proof oil temperature machine 130; dust removal mechanism 200; high-temperature dust collector 210; nitrogen heater 220; battery powder collection assembly 230; condensation recovery mechanism 300; primary shell and tube heat exchanger 310; secondary shell and tube heat exchanger 320; first air outlet 3201; first electrolyte storage tank 330; second electrolyte storage tank 340; third electrolyte storage tank 350; first fan 360; second fan 370; exhaust gas buffer tank 380; nitrogen supply system 400. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] See also Figure 1 to Figure 2 In order to better understand the lithium battery electrolyte dust removal and condensation device 10 of the present application, the lithium battery electrolyte dust removal and condensation device 10 is further explained below:

[0031] A lithium battery electrolyte dust removal and condensation device 10 of one embodiment includes an exhaust gas output mechanism 100, a dust removal mechanism 200 and a condensation recovery mechanism 300. The dust removal mechanism 200 includes a high-temperature dust collector 210, and the gas outlet end of the exhaust gas output mechanism 100 is connected to the gas inlet end of the high-temperature dust collector 210. The condensation recovery mechanism 300 includes a primary shell-and-tube heat exchanger 310 and a secondary shell-and-tube heat exchanger 320; the gas outlet end of the high-temperature dust collector 210 is connected to the tube side gas inlet end of the primary shell-and-tube heat exchanger 310, the tube side gas outlet end of the primary shell-and-tube heat exchanger 310 is connected to the tube side gas inlet end of the secondary shell-and-tube heat exchanger 320, the shell side of the primary shell-and-tube heat exchanger 310 is connected to the cooling water system, and the shell side of the secondary shell-and-tube heat exchanger 320 is connected to the explosion-proof cold water circulation system.

[0032] In this embodiment, the exhaust gas is transported to the air inlet end of the high-temperature dust collector 210 through the exhaust gas outlet end of the exhaust gas output mechanism 100, so that the high-temperature dust collector 210 can efficiently and reliably filter and collect the battery powder mixed in the exhaust gas.

[0033] Furthermore, the shell side of the first-stage shell-and-tube heat exchanger 310 is connected to the cooling water system, so that the exhaust gas transported to the first-stage shell-and-tube heat exchanger 310 undergoes a heat exchange and condensation; wherein a portion of the exhaust gas that has not been fully heat exchanged and condensed continues to be transported to the second-stage shell-and-tube heat exchanger 320, so as to facilitate the explosion-proof cold water circulation system to perform a secondary heat exchange, so that the exhaust gas can be fully condensed, thereby improving the safety and reliability of the lithium battery electrolyte dust removal and condensation device 10.

[0034] like Figure 1 to Figure 2As shown, in one embodiment, the exhaust gas output mechanism 100 includes a spiral cleaner 110, and the gas outlet end of the spiral cleaner 110 is connected to the gas inlet end of the high-temperature dust collector 210. In one embodiment, the exhaust gas output mechanism 100 also includes a low-temperature drying furnace 120, and the gas outlet end of the low-temperature drying furnace 120 is connected to the gas inlet end of the spiral cleaner 110. It can be understood that the crushed lithium battery needs to be heated and dried in the low-temperature drying furnace 120 to volatilize the electrolyte and generate exhaust gas; wherein, after the generated exhaust gas passes through the spiral cleaner 110, part of the battery powder mixed in the exhaust gas can be initially filtered, and the battery powder that cannot be fully filtered out is transported to the high-temperature dust collector 210 with the exhaust gas for secondary filtration and collection.

[0035] like Figure 1 to Figure 2 As shown, in one embodiment, the exhaust gas output mechanism 100 also includes an explosion-proof oil temperature machine 130, the oil outlet end of the explosion-proof oil temperature machine 130 is connected to the oil inlet end of the spiral cleaner 110, and the oil return end of the explosion-proof oil temperature machine 130 is connected to the oil outlet end of the spiral cleaner 110. It can be understood that in this embodiment, the high-temperature dust collector 210 is a bag dust collector. The bag dust collector has the characteristics of high filtration efficiency and strong applicability, so that the high-temperature dust collector 210 can better reliably and effectively filter the battery powder mixed in the exhaust gas. It can be understood that the explosion-proof oil temperature machine 130 can pass high-temperature heat transfer oil into the spiral cleaner 110, so that the exhaust gas transported to the spiral cleaner 110 always maintains a constant temperature, thereby avoiding the exhaust gas cooling and premature condensation or condensation, thereby avoiding the problem of liquid electrolyte and battery powder mixing to form sludge blocking subsequent pipelines.

[0036] It should be noted that the inner cavity (not shown) of the spiral cleaner 110 can be used to pass exhaust gas, and the outer side of the cylinder wall of the inner cavity is provided with a hollow interlayer (not shown) for passing heat transfer oil, thereby providing temperature guarantee for the exhaust gas flowing through the inner cavity of the spiral cleaner 110.

[0037] like Figure 1 to Figure 2As shown, in one embodiment, the dust removal mechanism 200 further includes a nitrogen heater 220, and the nitrogen heater 220 is used to provide pulse blowing for the filter cartridge of the high-temperature dust collector 210. In one embodiment, the dust removal mechanism 200 further includes a battery powder collection assembly 230, and the feed end of the battery powder collection assembly 230 is connected to the discharge end of the high-temperature dust collector 210, and the discharge end of the high-temperature dust collector 210 is located above the battery powder collection assembly 230. It can be understood that the high-temperature dust collector 210 has a more efficient and obvious filtering effect on exhaust gas, and the battery powder filtered by the high-temperature dust collector 210 can easily enter the feed end of the battery powder collection assembly 230 through potential energy; wherein, when the battery powder attached to the surface of the filter cartridge (not shown) of the high-temperature dust collector 210 reaches the level that needs to be cleaned, the nitrogen heater 220 can regularly provide pulse blowing to the filter cartridge (not shown) inside the high-temperature dust collector 210, so as to remove the battery powder attached to the surface of the filter cartridge (not shown), and effectively ensure the continuous and efficient operation of the high-temperature dust collector 210; further, the nitrogen heater 220 also simultaneously introduces nitrogen into the interior of the high-temperature dust collector 210 as a protective gas to reduce the oxygen content in the exhaust gas, effectively preventing the possibility of combustion and explosion of the exhaust gas, thereby improving the safety and reliability of the lithium battery electrolyte dust removal and condensation device 10.

[0038] like Figure 1 As shown, in one embodiment, the condensation recovery mechanism 300 also includes a first electrolyte storage tank 330, a second electrolyte storage tank 340 and a third electrolyte storage tank 350; the tube-side liquid outlet end of the first-stage shell-and-tube heat exchanger 310 is connected to the liquid inlet end of the first electrolyte storage tank 330, and the tube-side liquid outlet end of the first-stage shell-and-tube heat exchanger 310 is arranged above the first electrolyte storage tank 330; the tube-side liquid outlet end of the second-stage shell-and-tube heat exchanger 320 is connected to the liquid inlet end of the second electrolyte storage tank 340, and the tube-side liquid outlet end of the second-stage shell-and-tube heat exchanger 320 is arranged above the second electrolyte storage tank 340, and the overflow end of the first electrolyte storage tank 330 and the overflow end of the second electrolyte storage tank 340 are respectively connected to the liquid inlet end of the third electrolyte storage tank 350.

[0039] It can be understood that the shell side of the first-stage shell-and-tube heat exchanger 310 is connected to the cooling water system, so that the high-temperature exhaust gas that has been fully filtered is transported to the tube side of the first-stage shell-and-tube heat exchanger 310 for primary heat exchange and condensation, and the electrolyte that is partially condensed into a liquid flows into the liquid inlet end of the first electrolyte storage tank 330 for storage; and the other part of the exhaust gas that is not completely condensed (50°C) is transported to the tube side of the second-stage shell-and-tube heat exchanger 320 through the tube side gas outlet end of the first-stage shell-and-tube heat exchanger 310 for secondary heat exchange. Among them, the shell side of the second-stage shell-and-tube heat exchanger 320 can be connected to the explosion-proof cold water circulation system, so that the condensation effect of the secondary heat exchange is more efficient and thorough, that is, the cooling temperature (7°C) of the explosion-proof cold water circulation system is lower, so that the exhaust gas that is not completely condensed can be fully condensed, thereby improving the use safety and reliability of the lithium battery electrolyte dust removal and condensation device 10.

[0040] Furthermore, the exhaust gas condensed by the first-stage shell-and-tube heat exchanger 310 is converted into a liquid electrolyte, and then the electrolyte flows into the first electrolyte storage tank 330 through gravitational potential energy. When the electrolyte stored in the first electrolyte storage tank 330 reaches the overflow surface of the first electrolyte storage tank 330, the overflowing electrolyte can flow to the third electrolyte storage tank 350 for storage; similarly, the exhaust gas condensed by the second-stage shell-and-tube heat exchanger 320 is converted into a liquid electrolyte, and then the electrolyte flows into the second electrolyte storage tank 340 through gravitational potential energy. When the electrolyte stored in the second electrolyte storage tank 340 reaches the overflow surface of the second electrolyte storage tank 340, the overflowing electrolyte can also flow to the third electrolyte storage tank 350 for storage.

[0041] like Figure 1 As shown, in one embodiment, the lithium battery electrolyte dust removal and condensation device 10 further includes a nitrogen gas supply system 400, and a plurality of gas supply ports of the nitrogen gas supply system 400 are respectively connected to the tube-side gas inlet end of the primary shell-and-tube heat exchanger 310, the liquid inlet end of the first electrolyte storage tank 330, and the liquid inlet end of the second electrolyte storage tank 340. It can be understood that the nitrogen gas supply system 400 can provide reliable nitrogen protection to the primary shell-and-tube heat exchanger 310, the first electrolyte storage tank 330, and the second electrolyte storage tank 340, that is, reduce the internal oxygen content of the primary shell-and-tube heat exchanger 310, the first electrolyte storage tank 330, and the second electrolyte storage tank 340, thereby reducing the possibility of combustion and explosion of the tail gas, so that the use safety of the lithium battery electrolyte dust removal and condensation device 10 is effectively improved.

[0042] like Figure 1As shown, in one embodiment, a first fan 360 is provided between the outlet end of the high-temperature dust collector 210 and the tube-side air inlet end of the primary shell-and-tube heat exchanger 310. It is understandable that the first fan 360 can timely extract the tail gas filtered by the high-temperature dust collector 210 and transport it to the tube-side air inlet end of the primary shell-and-tube heat exchanger 310, thereby increasing the rate at which the tail gas is transported to the subsequent processing equipment.

[0043] like Figure 1 As shown, in one embodiment, the condensation recovery mechanism 300 further includes a second fan 370 and an exhaust gas buffer tank 380; a first air outlet 3201 is provided at the gas outlet end of the tube side of the secondary shell-and-tube heat exchanger 320, and the first air outlet 3201 is arranged adjacent to the liquid outlet end of the tube side of the secondary shell-and-tube heat exchanger 320, and the first air outlet 3201 is connected to the air inlet end of the second fan 370, and the air outlet end of the second fan 370 is connected to the air inlet end of the exhaust gas buffer tank 380. It can be understood that, after heat exchange and condensation between the primary shell-and-tube heat exchanger 310 and the secondary shell-and-tube heat exchanger 320, a small amount of exhaust gas that cannot be completely condensed appears, and this part of the exhaust gas that cannot be completely condensed can eventually be transported to the second fan 370 and the exhaust gas buffer tank 380 at the rear end through the first air outlet 3201.

[0044] It should be noted that in this embodiment, the outlet end of the exhaust gas buffer tank 380 is also connected to the exhaust gas incineration system at the rear end, so that a small amount of exhaust gas that cannot be completely condensed can be burned, thereby effectively ensuring the safety of use of the first-level shell and tube heat exchanger 310 and the second-level shell and tube heat exchanger 320.

[0045] Compared with the prior art, the utility model includes but is not limited to the following advantages:

[0046] 1. The tail gas is transported to the air inlet of the high-temperature dust collector 210 through the air outlet of the tail gas output mechanism 100, so that the high-temperature dust collector 210 can efficiently and reliably filter and collect the battery powder mixed in the tail gas.

[0047] 2. The shell side of the first-stage shell-and-tube heat exchanger 310 is connected to the cooling water system, so that the exhaust gas transported to the first-stage shell-and-tube heat exchanger 310 undergoes a heat exchange and condensation; wherein, a portion of the exhaust gas that has not been fully heat exchanged and condensed continues to be transported to the second-stage shell-and-tube heat exchanger 320, so as to facilitate the explosion-proof cold water circulation system to perform a secondary heat exchange, so that the exhaust gas can be fully condensed, thereby improving the safety and reliability of the lithium battery electrolyte dust removal and condensation device 10.

[0048] 3. The inner cavity (not shown) of the spiral cleaner 110 can be filled with exhaust gas, and the outer side of the cylinder wall of the inner cavity is provided with a coated hollow interlayer (not shown) for passing heat transfer oil, so as to provide temperature guarantee for the exhaust gas flowing through the inner cavity of the spiral cleaner 110, so that the exhaust gas transported to the spiral cleaner 110 can always maintain a constant temperature, thereby avoiding the exhaust gas cooling and premature condensation or condensation, and further avoiding the problem of liquid electrolyte and battery powder mixing to form sludge and clogging subsequent pipelines.

[0049] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A lithium battery electrolyte dust removal and condensation device (10), characterized in that: include: Exhaust gas output mechanism (100); A dust removal mechanism (200), the dust removal mechanism (200) comprising a high-temperature dust collector (210), the gas outlet end of the tail gas output mechanism (100) being connected to the gas inlet end of the high-temperature dust collector (210); A condensation recovery mechanism (300), the condensation recovery mechanism (300) comprising a primary shell-and-tube heat exchanger (310) and a secondary shell-and-tube heat exchanger (320); the gas outlet end of the high-temperature dust collector (210) is connected to the tube-side gas inlet end of the primary shell-and-tube heat exchanger (310), the tube-side gas outlet end of the primary shell-and-tube heat exchanger (310) is connected to the tube-side gas inlet end of the secondary shell-and-tube heat exchanger (320), the shell side of the primary shell-and-tube heat exchanger (310) is connected to a cooling water system, and the shell side of the secondary shell-and-tube heat exchanger (320) is connected to an explosion-proof cold water circulation system.

2. The lithium battery electrolyte dust removal and condensation device (10) according to claim 1, characterized in that: The exhaust gas output mechanism (100) comprises a spiral cleaner (110), and the gas outlet end of the spiral cleaner (110) is connected to the gas inlet end of the high-temperature dust collector (210).

3. The lithium battery electrolyte dust removal and condensation device (10) according to claim 2, characterized in that: The exhaust gas output mechanism (100) further comprises a low-temperature drying furnace (120), and the gas outlet end of the low-temperature drying furnace (120) is connected to the gas inlet end of the spiral cleaner (110).

4. The lithium battery electrolyte dust removal and condensation device (10) according to claim 3, characterized in that: The exhaust gas output mechanism (100) further comprises an explosion-proof oil temperature machine (130), the oil outlet end of the explosion-proof oil temperature machine (130) being connected to the oil inlet end of the spiral cleaner (110), and the oil return end of the explosion-proof oil temperature machine (130) being connected to the oil outlet end of the spiral cleaner (110).

5. The lithium battery electrolyte dust removal and condensation device (10) according to claim 1, characterized in that: The dust removal mechanism (200) further comprises a nitrogen heater (220), wherein the nitrogen heater (220) is used to provide pulse blowing for the filter cartridge of the high-temperature dust collector (210).

6. The lithium battery electrolyte dust removal and condensation device (10) according to claim 1, characterized in that: The dust removal mechanism (200) further comprises a battery powder collecting assembly (230), wherein a feed end of the battery powder collecting assembly (230) is connected to a discharge end of the high-temperature dust collector (210), and the discharge end of the high-temperature dust collector (210) is located above the battery powder collecting assembly (230).

7. The lithium battery electrolyte dust removal and condensation device (10) according to claim 1, characterized in that: The condensation recovery mechanism (300) also includes a first electrolyte storage tank (330), a second electrolyte storage tank (340) and a third electrolyte storage tank (350); the tube-side liquid outlet end of the first-stage shell-and-tube heat exchanger (310) is connected to the liquid inlet end of the first electrolyte storage tank (330), and the tube-side liquid outlet end of the first-stage shell-and-tube heat exchanger (310) is arranged above the first electrolyte storage tank (330); the tube-side liquid outlet end of the second-stage shell-and-tube heat exchanger (320) is connected to the liquid inlet end of the second electrolyte storage tank (340), and the tube-side liquid outlet end of the second-stage shell-and-tube heat exchanger (320) is arranged above the second electrolyte storage tank (340), and the overflow end of the first electrolyte storage tank (330) and the overflow end of the second electrolyte storage tank (340) are respectively connected to the liquid inlet end of the third electrolyte storage tank (350).

8. The lithium battery electrolyte dust removal and condensation device (10) according to claim 7, characterized in that: The lithium battery electrolyte dust removal and condensation device (10) further comprises a nitrogen gas supply system (400), wherein a plurality of gas supply ports of the nitrogen gas supply system (400) are respectively connected to the tube-side gas inlet end of the primary shell-and-tube heat exchanger (310), the liquid inlet end of the first electrolyte storage tank (330), and the liquid inlet end of the second electrolyte storage tank (340).

9. The lithium battery electrolyte dust removal and condensation device (10) according to claim 1, characterized in that: A first fan (360) is provided between the air outlet end of the high-temperature dust collector (210) and the air inlet end of the tube side of the first-stage shell-and-tube heat exchanger (310).

10. The lithium battery electrolyte dust removal and condensation device (10) according to claim 1, characterized in that: The condensation recovery mechanism (300) also includes a second fan (370) and an exhaust gas buffer tank (380); a first air outlet (3201) is provided at the gas outlet end of the tube side of the secondary shell-and-tube heat exchanger (320), and the first air outlet (3201) is arranged adjacent to the liquid outlet end of the tube side of the secondary shell-and-tube heat exchanger (320), and the first air outlet (3201) is connected to the air inlet end of the second fan (370), and the air outlet end of the second fan (370) is connected to the air inlet end of the exhaust gas buffer tank (380).

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