Waste liquid treatment device, solid-state battery production system, and waste liquid treatment method

Abstract

The application discloses a waste liquid treatment device, a solid-state battery production system and a waste liquid treatment method. The waste liquid treatment device comprises a reaction tank, a first liquid inlet pipe, a second liquid inlet pipe, a first exhaust pipe and a gas detector. The reaction tank has a reaction cavity, and waste liquid is suitable for generating hydrogen sulfide by chemical reaction in the reaction cavity. The first liquid inlet pipe is connected with the reaction tank and is connected in series with a first driving pump for conveying the waste liquid to the reaction cavity. The second liquid inlet pipe is connected with the reaction tank and is used for conveying a solution for reacting with sulfides in the waste liquid. The first exhaust pipe is connected with the reaction tank and is used for exhausting gas in the reaction cavity. The gas detector is installed on the reaction tank and is used for detecting hydrogen sulfide in the reaction tank. According to the waste liquid treatment device, sulfides in the waste liquid are fully treated before the waste liquid is transferred, so that the probability of generating hydrogen sulfide in the waste liquid transfer process can be reduced, the operation personnel's occupational health can be protected, the over-treatment situation can be prevented, the resource waste can be reduced, and the economy can be improved.

Description

Technical Field

[0001] This application relates to the field of battery production waste liquid treatment technology, and in particular to a waste liquid treatment device, a solid-state battery production system and a waste liquid treatment method. Background Technology

[0002] In related technologies, the production process of solid-state batteries generates a large amount of waste liquid, which contains high levels of parabens, sulfides, and chloride ions. Due to the presence of these substances, the solid-state battery waste liquid needs to be transferred to a qualified manufacturer for treatment. However, the high levels of sulfides in the waste liquid can easily produce hydrogen sulfide, sulfurous acid, and other harmful substances when exposed to air and water during transport and treatment, posing a threat to the occupational health of operators. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a waste liquid treatment device that can fully treat sulfides in waste liquid before transfer, thereby reducing the probability of hydrogen sulfide generation during waste liquid transfer, thus protecting the occupational health of operators. Furthermore, by installing a gas detector, overtreatment can be prevented, thereby reducing resource waste and improving economic efficiency.

[0004] This application also proposes a solid-state battery production system having the above-mentioned waste liquid treatment device.

[0005] This application also proposes a waste liquid treatment method.

[0006] In a first aspect, embodiments of this application provide a waste liquid treatment device for treating waste liquid generated during solid-state battery production. The waste liquid treatment device includes: a reaction tank having a reaction chamber, wherein the waste liquid is adapted to undergo a chemical reaction within the reaction chamber to generate hydrogen sulfide; a first inlet pipe connected to the reaction tank and connected in series with a first drive pump for conveying the waste liquid to the reaction chamber; a second inlet pipe connected to the reaction tank for conveying a solution that reacts with sulfides in the waste liquid; a first exhaust pipe connected to the reaction tank for discharging gas from the reaction chamber; and a gas detector installed in the reaction tank for detecting hydrogen sulfide within the reaction tank.

[0007] In the above technical solution, by setting up a reaction tank and a gas detector, the sulfides in the waste liquid can be fully treated before the waste liquid is transferred, thereby reducing the probability of hydrogen sulfide being generated during the waste liquid transfer process, thus protecting the occupational health of operators. At the same time, by setting up a gas detector, overtreatment can also be prevented, thereby reducing resource waste and improving economic efficiency.

[0008] In some embodiments, the waste liquid treatment device further includes: a first detection component, which is disposed on the reaction tank and is used to detect the liquid volume in the reaction chamber in real time.

[0009] In the above technical solution, by setting up a first detection component, the liquid volume in the reaction chamber can be detected in real time. This can effectively prevent overflow when waste liquid is transported into the reaction chamber. At the same time, the detection of liquid volume can also determine whether there is a leak. This can help staff to discover potential leakage problems in time and take corresponding measures quickly, thereby reducing the risks and losses in the waste liquid treatment process.

[0010] In some embodiments, the first detection component includes: a level gauge for detecting the liquid level height inside the reaction vessel; and / or a weighing sensor for detecting the weight of the reaction vessel; and / or a high-level sensor for detecting the highest liquid level inside the reaction vessel.

[0011] In the above technical solution, by setting the first detection component to include a level gauge, the liquid inlet volume can be directly reflected, thereby more effectively controlling the liquid inlet volume and preventing the reaction tank from overflowing; by setting the first detection component to include a weighing sensor, it can be unaffected by the liquid surface state, thereby improving the measurement accuracy and system reliability; by setting the first detection component to include a high liquid level sensor, the reaction tank overflowing can be further prevented.

[0012] In some embodiments, the first detection component further includes an actuator configured to stop the first inlet pipe from delivering waste liquid to the reaction chamber when the waste liquid reaches the highest level.

[0013] In the above technical solution, by setting an actuator, the delivery of waste liquid to the reaction chamber can be stopped when the waste liquid reaches the highest liquid level. This can prevent the reaction tank from overflowing, thereby reducing the probability of danger in the waste liquid treatment process.

[0014] In some embodiments, the first drive pump is a pneumatic pump, and the actuator includes an air pipe and a control valve. The air pipe is connected to the pneumatic pump and is used to supply compressed air to the pneumatic pump. The control valve is connected in series with the air pipe. When the waste liquid reaches the highest liquid level, the control valve closes to stop supplying air to the pneumatic pump.

[0015] In the above technical solution, by setting the actuator to include: air pipe and control valve, the overall structure of the first detection component can be simplified, thereby reducing the production cost of the first detection component.

[0016] In some embodiments, the waste liquid treatment device further includes: a first inlet pipe, which is connected to the reaction tank and is used to supply inert gas to the reaction tank so that hydrogen sulfide is discharged from the reaction tank through the first exhaust pipe.

[0017] In the above technical solution, by providing inert gas to the reaction tank through a first inlet pipe, hydrogen sulfide in the reaction tank can be quickly discharged, thereby improving the waste liquid treatment efficiency; at the same time, due to the good stability of inert gas, the risks in the waste liquid treatment process can also be reduced.

[0018] In some embodiments, the outlet end of the second inlet pipe is provided with a nozzle, which is located inside the reaction vessel and is used to spray deionized water into the reaction vessel.

[0019] In the above technical solution, by setting nozzles, the uniformity of liquid distribution throughout the tank can be improved, which can better promote the mixing of waste liquid and deionized water, thereby improving the hydrogen sulfide generation efficiency.

[0020] In some embodiments, the waste liquid treatment apparatus further includes: a settling tank for settling and separating the treatment liquid obtained after treatment by the reaction tank; a third inlet pipe connected between the reaction tank and the settling tank; and a second drive pump connected in series with the third inlet pipe for pumping the treatment liquid into the settling tank.

[0021] In the above technical solution, by setting up a settling tank, water and pseudotrimethylbenzene can be separated, so that only pseudotrimethylbenzene can be treated, thereby reducing the cost of transferring and treating waste liquid.

[0022] In some embodiments, the waste liquid treatment device further includes an oil-water interface measuring instrument, which is installed on a settling tank and used to measure the oil-water interface of the liquid in the settling tank.

[0023] In the above technical solution, by setting up an oil-water interface measuring instrument, it is helpful to separate water from organic solvents, thereby effectively removing water from the treatment liquid and reducing the cost of transfer treatment.

[0024] In some embodiments, the waste liquid treatment device further includes a second detection component, which is disposed on a settling tank and is used to detect the liquid volume in the settling tank in real time.

[0025] In the above technical solution, by setting a second detection component, the liquid volume in the settling tank can be detected in real time. This can effectively prevent overflow when waste liquid is transported into the settling tank. At the same time, the detection of liquid volume can also determine whether there is a leak. This can help staff to discover potential leakage problems in time and take corresponding measures quickly, thereby reducing the risks and losses in the waste liquid treatment process.

[0026] In some embodiments, the waste liquid treatment apparatus further includes a solid-liquid separator for solid-liquid separation, wherein the solid-liquid separator is connected in series between the reaction tank and the second drive pump.

[0027] In the above technical solution, by setting up a solid-liquid separator, solid waste and liquid waste in the waste liquid treatment device can be treated in a targeted manner, thereby improving the overall process efficiency.

[0028] In some embodiments, the waste liquid treatment apparatus further includes a transfer tank and a transfer pump, wherein the transfer tank is connected to a settling tank and the transfer pump is used to transfer the organic solvent in the settling tank to the transfer tank.

[0029] In the above technical solution, by setting up transfer tanks and transfer pumps, organic solvents can be transferred to relevant processing facilities for centralized processing.

[0030] In some embodiments, the transfer container is an explosion-proof container.

[0031] In the above technical solution, by setting the transfer tank as an explosion-proof tank, the risk of explosion during the transfer and handling of pseudotrimethylbenzene can be further reduced.

[0032] In some embodiments, corrosion-resistant components are provided on the inner wall of the transfer tank.

[0033] In the above technical solution, by setting anti-corrosion components on the inner wall of the transfer tank, the corrosion of the transfer tank by the waste liquid can be effectively reduced, thereby further improving the service life and reliability of the transfer tank.

[0034] In some embodiments, the corrosion-resistant parts are Teflon parts.

[0035] In the above technical solution, by using Teflon parts for corrosion protection, the durability of the transfer tank can be improved, thereby enhancing its reliability. Simultaneously, maintenance costs can be reduced, lowering the maintenance costs of the waste liquid treatment device. In some embodiments, the thickness of the Teflon parts ranges from 0.4mm to 0.5mm.

[0036] In the above technical solution, by setting the thickness range of Teflon parts to 0.4mm-0.5mm, the thickness of the anti-corrosion parts can meet the requirements of corrosion protection without being too large, thereby reducing the overall production cost of the transfer tank.

[0037] In some embodiments, the waste liquid treatment device further includes a second air inlet pipe connected to a transfer tank for supplying inert gas into the transfer tank.

[0038] In the above technical solution, by providing inert gas into the transfer tank through a second air inlet pipe, oxygen, one of the three elements of combustion, can be isolated, thereby further reducing the risk of explosion of the pseudotrimethylbenzene solution.

[0039] In some embodiments, the inert gas is nitrogen.

[0040] In the above technical solution, by setting nitrogen as the inert gas, the cost of waste liquid treatment can be further reduced.

[0041] In some embodiments, the transfer tank is provided with: a detection device, which is disposed on the transfer tank for real-time detection of the liquid level, temperature and / or oxygen concentration in the transfer tank; and a pressure relief mechanism, which is disposed on the transfer tank for releasing the pressure in the transfer tank.

[0042] In the above technical solution, by setting up a detection device, the liquid level, temperature and / or oxygen concentration in the transfer tank can be detected in real time, thereby indirectly detecting whether the solution in the transfer tank has potential leakage, explosion and combustion problems, so that corresponding measures can be taken quickly, thereby reducing the risk of explosion and loss; by setting up a pressure relief mechanism, the pressure in the transfer tank can be automatically released when the pressure exceeds the set range, thereby preventing explosion or other safety accidents caused by overpressure.

[0043] In some embodiments, the waste liquid treatment device further includes a third detection component, which is disposed on the transfer tank and is used to detect the liquid volume in the transfer tank in real time.

[0044] In the above technical solution, by setting up a third detection component, the liquid volume in the transfer tank can be detected in real time. This can effectively prevent overflow when transporting waste liquid into the transfer tank. At the same time, the detection of liquid volume can also determine whether there is a leak. This can help staff to detect potential leakage problems in time and take corresponding measures quickly, thereby reducing the risks and losses in the waste liquid transfer process.

[0045] In some embodiments, the waste liquid treatment apparatus further includes: a temporary storage tank having a receiving cavity configured to store waste liquid, the temporary storage tank being connected to a reaction vessel via a first inlet pipe; a fourth inlet pipe connected to the temporary storage tank for conveying waste liquid into the receiving cavity; and a third drive pump connected in series on the fourth inlet pipe, the third drive pump being configured to pump waste liquid into the receiving cavity.

[0046] In the above technical solution, by setting up a temporary storage tank, the stability of the first drive pump's delivery can be ensured, thereby achieving the continuity of waste liquid treatment and improving the waste liquid treatment rate.

[0047] Secondly, embodiments of this application also provide a solid-state battery production system, including: a stirring device and a waste liquid treatment device according to the first aspect of this application, the waste liquid treatment device being used to treat cleaning waste liquid in the stirring device, the stirring device having a waste liquid pipe connected to a first inlet pipe.

[0048] In the above technical solution, by setting up the waste liquid treatment device of the first aspect of this application, the sulfides in the waste liquid generated in the solid-state battery production system can be fully treated, thereby reducing the probability of hydrogen sulfide generation during the waste liquid transfer process, thus protecting the occupational health of operators. At the same time, by setting up a gas detector, over-treatment can be prevented, thereby reducing resource waste and improving economic efficiency.

[0049] Thirdly, embodiments of this application also provide a waste liquid treatment method for use in a solid-state battery production system according to the second aspect of this application. The waste liquid treatment method includes: step S11, injecting waste liquid into a reaction tank; step S12, adding deionized water to the reaction tank in portions while simultaneously introducing nitrogen gas; step S13, detecting hydrogen sulfide in the reaction tank; and step S14, confirming that no hydrogen sulfide is detected for a preset time, then the waste liquid treatment in the reaction tank is completed.

[0050] In the above technical solution, by using the waste liquid treatment device of the first aspect to treat the waste liquid, the sulfides in the waste liquid can be fully treated, thereby reducing the probability of hydrogen sulfide being generated during the transfer of the waste liquid, thus protecting the occupational health of the operators. At the same time, it can also prevent overtreatment, thereby reducing resource waste and improving economic efficiency.

[0051] In some embodiments, the preset time is 15-25 minutes.

[0052] In the above technical solution, by setting the preset time to 15min-25min, the time can be prevented from being too long, thus avoiding problems such as low processing speed and waste of resources. At the same time, the preset time is also prevented from being too short, thus effectively preventing the occurrence of incomplete processing.

[0053] In some embodiments, the waste liquid treatment device further includes a settling tank, the inlet of which is connected to the outlet of the reaction tank, and the waste liquid treatment method further includes transferring the treated liquid obtained after the reaction in the reaction tank to the settling tank and settling it until it separates into layers.

[0054] In the above technical solution, by transferring the treated liquid obtained after the reaction in the reaction tank to a settling tank and allowing it to stand until it separates into layers, water and pseudotrimethylbenzene can be treated separately, thereby reducing the cost of waste liquid transfer and treatment.

[0055] In some embodiments, the waste liquid treatment device further includes: a solid-liquid separator connected between the reaction tank and the settling tank, which transfers the treated liquid obtained after the reaction in the reaction tank to the settling tank for settling until it separates into layers, including: step S21, pumping out the treated liquid formed after the reaction in the reaction tank; step S22, turning on the solid-liquid separator to separate the solid and the liquid; and step S23, driving the liquid into the settling tank for settling until it separates into layers.

[0056] In the above technical solution, by turning on the solid-liquid separator to separate solids and liquids, the solid and liquid wastes in the treatment liquid can be treated in a targeted manner, thereby improving the overall process efficiency.

[0057] In some embodiments, the waste liquid treatment device further includes a transfer tank connected to a settling tank, and the waste liquid treatment method further includes: step S31, transferring the upper layer liquid in the settling tank to the transfer tank; step S32, introducing nitrogen gas into the transfer tank to replace the air in the transfer tank.

[0058] In the above technical solution, by setting up a transfer tank, the upper layer of liquid in the settling tank can be transferred to a professional department for processing; by introducing nitrogen into the transfer tank to isolate oxygen, one of the three elements of combustion, the risk of explosion of the pseudotrimethylbenzene solution can be further reduced.

[0059] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of a solid-state battery production system according to an embodiment of this application;

[0061] Figure 2 This is a schematic diagram showing the connection between the reaction vessel and other components according to an embodiment of this application;

[0062] Figure 3 This is a schematic diagram showing the connection between the settling tank and other components according to an embodiment of this application;

[0063] Figure 4 This is a schematic diagram showing the connection between the transfer tank and other components according to an embodiment of this application;

[0064] Figure 5 This is a schematic diagram showing the connection between the temporary storage tank and other components according to an embodiment of this application.

[0065] Figure label:

[0066] 1000. Solid-state battery production system;

[0067] 100. Waste liquid treatment device;

[0068] 10. Reaction vessel; 11. First inlet pipe; 12. Second inlet pipe; 13. Nozzle; 14. First drive pump; 15. Gas detector; 16. First detection component; 161. Level gauge; 162. Weighing sensor; 163. High level sensor; 164. Actuator; 1641. Gas pipe; 1642. Control valve;

[0069] 20. Settling tank; 21. Third inlet pipe; 22. Second drive pump; 23. Oil-water interface measuring instrument; 24. Second detection component;

[0070] 30. Solid-liquid separator;

[0071] 40. Transfer tank; 41. Transfer pump; 42. Third detection component;

[0072] 50. Temporary storage tank; 51. Fourth inlet pipe; 52. Third drive pump; 53. Fourth detection component;

[0073] 200. Stirring device; 300. Central control system. Detailed Implementation

[0074] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0076] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0077] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0078] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0079] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0080] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0081] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0082] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0083] In related technologies, the production process of solid-state batteries generates a large amount of waste liquid, which contains high levels of parabens, sulfides, and chloride ions. Due to the presence of these substances, the solid-state battery waste liquid needs to be transferred to a qualified manufacturer for treatment. However, the high levels of sulfides in the waste liquid can easily produce hydrogen sulfide, sulfurous acid, and other harmful substances when exposed to air and water during transport and treatment, posing a threat to the occupational health of operators.

[0084] Based on the above considerations, in order to address the problem that the large amount of sulfides contained in waste liquid can easily produce hydrogen sulfide, sulfurous acid, and other harmful substances during waste liquid transfer and treatment, posing a threat to the occupational health of operators, this application proposes a waste liquid treatment device. This device includes a reaction tank and a gas detector. The reaction tank has a reaction chamber where the waste liquid is suitable for undergoing a chemical reaction to generate hydrogen sulfide. The gas detector is installed in the reaction tank to detect hydrogen sulfide within it. This allows for thorough treatment of the sulfides in the waste liquid before transfer, thereby reducing the probability of hydrogen sulfide generation during waste liquid transfer and protecting the occupational health of operators. Furthermore, the gas detector also prevents overtreatment, reducing resource waste and improving economic efficiency.

[0085] The following is for reference. Figures 1-5 A waste liquid treatment apparatus 100 according to an embodiment of the first aspect of this application is described. Figure 1 This is a schematic diagram of a solid-state battery production system 1000 according to an embodiment of this application. Figure 2 This is a schematic diagram showing the connection between the reaction vessel 10 and other components according to an embodiment of this application. Figure 3 This is a schematic diagram showing the connection between the settling tank 20 and other components according to an embodiment of this application. Figure 4 This is a schematic diagram showing the connection between the transfer tank 40 and other components according to an embodiment of this application; Figure 5 This is a schematic diagram showing the connection between the temporary storage tank 50 and other components according to an embodiment of this application.

[0086] An embodiment of this application provides a waste liquid treatment device 100, referring to... Figures 1-2 The waste liquid treatment device 100 is used to treat the waste liquid generated during the solid-state battery production process. The waste liquid treatment device 100 includes: a reaction tank 10, a first inlet pipe 11, a second inlet pipe 12, a first exhaust pipe, a first drive pump 14, and a gas detector 15.

[0087] Specifically, the reaction vessel 10 has a reaction chamber where the waste liquid is suitable for undergoing a chemical reaction to generate hydrogen sulfide. It can be understood that the reaction vessel 10 is a reaction container that can store waste liquid, and the waste liquid can undergo a chemical reaction within the reaction chamber of the reaction vessel 10. It should be noted that the reaction vessel 10 can be a reaction kettle or a storage tank with a certain strength and corrosion resistance.

[0088] The first inlet pipe 11 is connected to the reaction tank 10, and a first drive pump 14 for conveying waste liquid to the reaction chamber is connected in series. The first inlet pipe 11 has a flow channel suitable for the flow of waste liquid, and the first drive pump 14 is connected in series with the first inlet pipe 11 to provide driving force for the flow of waste liquid in the first inlet pipe 11.

[0089] The second inlet pipe 12 is connected to the reaction tank 10 and is used to transport the solution that reacts with the sulfides in the waste liquid. Specifically, the second inlet pipe 12 has a fluid channel through which the solution that reacts with the sulfides can be introduced into the reaction chamber of the reaction tank 10 to react with the sulfides in the waste liquid. It should be noted that the solution that reacts with the sulfides can be selected according to the actual treatment requirements.

[0090] The first exhaust pipe is connected to the reaction vessel 10 and is used to discharge the gas inside the reaction chamber. Specifically, the first exhaust pipe is mainly used to discharge hydrogen sulfide to prevent hydrogen sulfide from overflowing from the reaction vessel 10 and causing harm to the human body.

[0091] A gas detector 15 is installed in the reaction tank 10 to detect hydrogen sulfide inside the reaction tank 10. Specifically, the gas detector 15 is mainly used to detect the concentration of hydrogen sulfide in the reaction tank 10, so as to indirectly detect whether the sulfides in the waste liquid in the reaction tank 10 have reacted sufficiently, thereby preventing incomplete treatment and overtreatment.

[0092] Specifically, the waste liquid treatment process in the reaction tank 10 is as follows: First, the first drive pump 14 is started, and the first drive pump 14 drives the waste liquid into the reaction tank 10 through the first inlet pipe 11. Then, the first drive pump 14 is turned off, and then the solution that reacts with the sulfides in the waste liquid is added to the reaction tank 10 through the second inlet pipe 12. At the same time, the first exhaust pipe is opened, so that the hydrogen sulfide generated by the reaction is discharged from the reaction tank 10 through the first exhaust pipe. Meanwhile, the gas detector 15 monitors the concentration of hydrogen sulfide in the reaction tank 10 in real time. When no hydrogen sulfide is detected for a certain period of time, the waste liquid treatment in the reaction tank 10 is completed.

[0093] In the above technical solution, by setting up a reaction tank 10 and a gas detector 15, the sulfides in the waste liquid can be fully treated before the waste liquid is transferred, thereby reducing the probability of hydrogen sulfide being generated during the waste liquid transfer process, thus protecting the occupational health of operators. At the same time, by setting up a gas detector 15, overtreatment can also be prevented, thereby reducing resource waste and improving economic efficiency.

[0094] In some embodiments, refer to Figure 2 The waste liquid treatment device 100 also includes a first detection component 16, which is installed on the reaction tank 10 and is used to detect the liquid volume in the reaction chamber in real time.

[0095] It should be noted that the first detection component 16 can detect the liquid volume in the reaction chamber in real time in a variety of ways. For example, it can detect the liquid level height by using the level gauge 161 and then calculate the liquid volume in the reaction chamber based on the size of the reaction chamber. Alternatively, it can detect the overall weight of the reaction tank 10 and then calculate the liquid volume in the reaction chamber based on the mass fraction of the waste liquid.

[0096] In the above technical solution, by setting the first detection component 16, the liquid volume in the reaction chamber can be detected in real time. This can effectively prevent overflow when waste liquid is transported into the reaction chamber. At the same time, the detection of liquid volume can also determine whether there is a leak. This can help staff to discover potential leakage problems in time and take corresponding measures quickly, thereby reducing the risks and losses in the waste liquid treatment process.

[0097] In some embodiments, refer to Figure 2 The first detection component 16 includes: a level gauge 161 for detecting the liquid level height inside the reaction vessel 10; and / or a weighing sensor 162 for detecting the weight of the reaction vessel 10; and / or a high level sensor 163 for detecting the highest liquid level inside the reaction vessel 10.

[0098] It is understood that the first detection component 16 may include one or more of a level gauge 161, a weighing sensor 162, and a high level sensor 163.

[0099] The level gauge 161 is mainly used to detect the liquid level in the reaction tank 10. This allows for a direct indication of the liquid inflow, enabling more effective control of the inflow and preventing overflow from the reaction tank 10. It should be noted that there are various types of level gauges 161, such as ultrasonic level gauges 161, radar level gauges 161, and magnetic level gauges 161.

[0100] The weighing sensor 162 is mainly used to detect the weight of the reaction vessel 10 and estimate the liquid volume inside the reaction vessel 10 by weight. The weighing sensor 162 is mainly set on the outside of the reaction vessel 10. Therefore, it can be understood that the weighing sensor 162 does not come into contact with the waste liquid, and thus is not affected by the state of the liquid surface, thereby improving the measurement accuracy and the reliability of the system.

[0101] The high liquid level sensor 163 is used to detect the highest liquid level in the reaction tank 10. When the liquid in the reaction tank 10 reaches the highest liquid level, the operator can shut off the liquid inlet of the reaction tank 10, which can effectively prevent the reaction tank 10 from overflowing.

[0102] Optionally, the first detection component 16 includes: a level gauge 161, a weighing sensor 162, and a high level sensor 163. The results detected by the level gauge 161 and the weighing sensor 162 are linked and mutually verified. When the two conversion results are inconsistent, it is determined that there is an abnormality in the inlet and outlet. At this time, the control system immediately takes emergency measures such as stopping the pump, closing the valve, and alarming.

[0103] In the above technical solution, by setting the first detection component 16 to include a level gauge 161, the liquid inlet volume can be directly reflected, thereby more effectively controlling the liquid inlet volume and preventing the reaction tank 10 from overflowing; by setting the first detection component 16 to include a weighing sensor 162, it can be unaffected by the liquid surface state, thereby improving the measurement accuracy and system reliability; by setting the first detection component 16 to include a high liquid level sensor 163, the overflow of the reaction tank 10 can be further prevented.

[0104] In some embodiments, refer to Figure 2 The first detection component 16 also includes an actuator 164, configured to stop the first inlet pipe 11 from supplying waste liquid to the reaction chamber when the waste liquid reaches the highest liquid level.

[0105] It is understood that the actuator 164 of this application is linked with the high liquid level sensor 163. When the high liquid level sensor 163 detects that the waste liquid has reached the highest liquid level, the actuator 164 is activated so that the first liquid inlet pipe 11 stops delivering waste liquid to the reaction chamber.

[0106] It should be noted that the actuator 164 includes various types. For example, the actuator 164 operates the valve or pump according to the controller's instructions to stop the input of waste liquid. For instance, when the high liquid level sensor 163 detects that the waste liquid has reached the maximum liquid level, it sends an alarm signal to the central control system 300. The central control system 300 receives the signal and controls the first drive pump 14 to stop running or closes the inlet valve on the first inlet pipe 11, thereby stopping the delivery of liquid to the reaction chamber.

[0107] In the above technical solution, by setting the actuator 164, the waste liquid can be stopped from being delivered to the reaction chamber when the waste liquid reaches the highest level. This can prevent the reaction tank 10 from overflowing, thereby reducing the probability of danger in the waste liquid treatment process.

[0108] In some embodiments, refer to Figure 2 The first drive pump 14 is a pneumatic pump. The actuator 164 includes an air pipe 1641 and a control valve 1642. The air pipe 1641 is connected to the pneumatic pump and is used to supply compressed air to the pneumatic pump. The control valve 1642 is connected in series with the air pipe 1641. When the waste liquid reaches the highest liquid level, the control valve 1642 closes to stop supplying air to the pneumatic pump.

[0109] Specifically, the pneumatic pump is a pump that uses compressed air as a power source. Therefore, when the waste liquid reaches the highest level, the control valve 1642 closes, stops supplying air to the pneumatic pump, and thus stops the pneumatic pump from running, thereby realizing the pumping of waste liquid to the reaction tank 10.

[0110] For example Figure 2As shown, the high liquid level sensor 163 and the actuator 164 are combined to form a float liquid level switch assembly. The float liquid level switch assembly includes a float liquid level switch and an air pipe 1641. Parts of the float liquid level switch and the air pipe 1641 are arranged in the reaction chamber. The float liquid level switch includes a float, a connecting rod, and a ball valve. The ball valve is connected in series with the air pipe 1641 and is connected to the float through the connecting rod. When the pneumatic pump is normally feeding liquid, the ball valve is in the open state, and the air pipe 1641 provides air to the ball valve. When the waste liquid gradually rises in the reaction chamber, the waste liquid drives the float to rise. When the highest liquid level is reached, the float drives the ball valve through the connecting rod to close the gas passage of the air pipe 1641, thereby stopping the pneumatic pump and realizing the pumping of waste liquid to the reaction tank 10.

[0111] In the above technical solution, by setting the actuator 164 to include: air pipe 1641 and control valve 1642, the overall structure of the first detection component 16 can be simplified, thereby reducing the production cost of the first detection component 16.

[0112] In some embodiments, the waste liquid treatment device 100 further includes: a first inlet pipe, which is connected to the reaction tank 10 and is used to provide inert gas to the reaction tank 10 so that hydrogen sulfide is discharged from the reaction tank 10 through the first exhaust pipe.

[0113] Inert gases are elements that do not readily react chemically with other substances at room temperature and pressure, exhibiting relatively high chemical stability. Inert gases include various types, such as argon, helium, neon, and nitrogen.

[0114] Optionally, the inert gas in this application is nitrogen, which has relatively stable chemical properties and relatively low cost. Therefore, using nitrogen as the inert gas can further reduce the cost of waste liquid treatment.

[0115] In the above technical solution, by providing inert gas to the reaction tank 10 through the first air inlet pipe, hydrogen sulfide in the reaction tank 10 can be quickly discharged, thereby improving the waste liquid treatment efficiency; at the same time, since the inert gas has good stability, the risk in the waste liquid treatment process can also be reduced.

[0116] In some embodiments, refer to Figure 2 The outlet end of the second liquid inlet pipe 12 is provided with a nozzle 13, which is located inside the reaction tank 10 and is used to spray deionized water into the reaction tank 10.

[0117] In this process, deionized water primarily acts as a solvent to help dissolve sulfides and release sulfur ions, thereby promoting the generation of hydrogen sulfide. Deionized water is sprayed into the reaction tank 10 through nozzle 13, which improves the uniformity of liquid distribution throughout the tank, thus better promoting the mixing of waste liquid and deionized water, and ultimately increasing the efficiency of hydrogen sulfide generation.

[0118] In the above technical solution, by setting the nozzle 13, the uniformity of liquid distribution throughout the tank can be improved, which can better promote the mixing of waste liquid and deionized water, thereby improving the hydrogen sulfide generation efficiency.

[0119] In some embodiments, refer to Figure 1 and Figure 3 The waste liquid treatment device 100 further includes: a settling tank 20, a third inlet pipe 21, and a second drive pump 22 connected in series with the third inlet pipe 21. The settling tank 20 is used to settling and separating the treatment liquid obtained after being treated by the reaction tank 10. The third inlet pipe 21 is connected between the reaction tank 10 and the settling tank 20. The second drive pump 22 is used to pump the treatment liquid into the settling tank 20.

[0120] Specifically, the third inlet pipe 21 works in conjunction with the second drive pump 22 to allow the treated liquid from the reaction tank 10 to enter the settling tank 20 for storage and settling. The second drive pump 22 primarily provides the driving force for the flow of the treated liquid.

[0121] It should be noted that the treatment solution includes pseudotrimethylbenzene and water. Pseudotrimethylbenzene is insoluble in water. Therefore, when the treatment solution is left to stand in the settling tank 20, it will separate into layers. After the layers are separated, the water can be drained and only the pseudotrimethylbenzene is treated. It should be further noted that the pseudotrimethylbenzene solution needs to be centrally treated by a professional organization, which can reduce the cost of transferring and treating waste liquid.

[0122] In the above technical solution, by setting up a settling tank 20, water and pseudotrimethylbenzene can be separated, so that only pseudotrimethylbenzene can be treated, thereby reducing the cost of transferring and treating waste liquid.

[0123] In some embodiments, refer to Figure 3 The waste liquid treatment device 100 also includes an oil-water interface measuring instrument 23, which is installed on the settling tank 20 and is used to measure the oil-water interface of the liquid in the settling tank 20.

[0124] It should be noted that the oil-water interface measuring instrument 23 is a device specifically used for detecting and monitoring the position of the oil-water interface in an oil-water mixture. There are various types of oil-water interface measuring instruments, such as float-type level gauges 161, capacitive level gauges 161, and ultrasonic level gauges 161.

[0125] In the above technical solution, by setting up an oil-water interface measuring instrument 23, it is helpful to separate water from organic solvents, thereby effectively removing water from the treatment liquid and reducing the cost of transfer treatment.

[0126] In some embodiments, refer to Figure 3 The waste liquid treatment device 100 also includes a second detection component 24, which is disposed on the settling tank 20 and is used to detect the liquid volume in the settling tank 20 in real time.

[0127] It should be noted that the second detection component 24 may have the same structure as the first detection component 16. The second detection component 24 includes one or more of the following: a level gauge 161, a weighing sensor 162, and a high level sensor 163. The level gauge 161 is used to detect the liquid level in the settling tank 20; the weighing sensor 162 is used to detect the weight of the settling tank 20; and the high level sensor 163 is used to detect the highest liquid level in the settling tank 20.

[0128] In the above technical solution, by setting the second detection component 24, the liquid volume in the settling tank 20 can be detected in real time. This can effectively prevent overflow when waste liquid is transported into the settling tank 20. At the same time, the detection of liquid volume can also determine whether there is a leak. This can help staff to discover potential leakage problems in time and take corresponding measures quickly, thereby reducing the risks and losses in the waste liquid treatment process.

[0129] In some embodiments, refer to Figure 1 The waste liquid treatment device 100 also includes a solid-liquid separator 30, which is used for solid-liquid separation and is connected in series between the reaction tank 10 and the second drive pump 22.

[0130] The solid-liquid separator 30 is mainly used to separate the solid and liquid in the treatment liquid, so that the liquid enters the settling tank 20 through the second drive pump 22 for settling treatment, and the solid waste is sent to the solid waste treatment plant.

[0131] It should be noted that the solid waste in the treatment liquid of this application mainly consists of ternary powder and reaction gel.

[0132] Optionally, the solid-liquid separator 30 of this application is a rotary wet-dry filter, wherein the rotary wet-dry filter mainly achieves solid-liquid separation through a rotating component. The rotary wet-dry filter has a high processing rate and can quickly and effectively separate solids and liquids, thereby improving working efficiency.

[0133] Optionally, the solid-liquid separator 30 can be configured as a standby unit, so that when one of them is damaged and needs maintenance, the other can be started, thereby ensuring the normal operation of waste liquid treatment and improving the waste liquid treatment rate.

[0134] In the above technical solution, by setting up a solid-liquid separator 30, the solid waste and liquid waste in the waste liquid treatment device 100 can be treated in a targeted manner, thereby improving the overall process efficiency.

[0135] In some embodiments, the waste liquid treatment device 100 further includes a transfer tank 40 and a transfer pump 41, wherein the transfer tank 40 is connected to the settling tank 20, and the transfer pump 41 is used to transfer the organic solvent in the settling tank 20 to the transfer tank 40.

[0136] The transfer tank 40 is mainly used to store and transfer the organic solvent in the settling tank 20, enabling the organic solvent to be transferred to the relevant processing facility for treatment. The transfer pump 41 mainly provides the driving force for the transfer of the organic solvent. It should be noted that the organic solvent is a pseudotrimethylbenzene solution.

[0137] Optionally, the transfer pump 41 is a pneumatic pump, which has better explosion-proof performance because it uses compressed air instead of electricity, thus allowing it to be used in flammable and explosive environments.

[0138] In the above technical solution, by setting up a transfer tank 40 and a transfer pump 41, organic solvents can be transferred to relevant processing facilities for centralized processing.

[0139] In some embodiments, the transfer tank 40 is an explosion-proof tank.

[0140] Among them, explosion-proof containers are containers specifically designed for the safe storage and transportation of explosives or potentially explosive hazardous materials.

[0141] It should be noted that explosion-proof containers are generally metal containers, such as those made of 316 stainless steel or 304 stainless steel.

[0142] In the above technical solution, by setting the transfer tank 40 as an explosion-proof tank, the risk of explosion during the transfer and handling of pseudotrimethylbenzene can be further reduced.

[0143] In some embodiments, corrosion-resistant components are provided on the inner wall of the transfer tank 40.

[0144] Corrosion-resistant components refer to parts manufactured using specific materials or processing techniques that possess corrosion resistance. It should be noted that wastewater contains a large amount of chloride ions; therefore, corrosion-resistant components are installed on the inner wall of the transfer tank 40 to effectively prevent chloride ion corrosion of the explosion-proof tank, thereby further improving the service life and reliability of the transfer tank 40.

[0145] It should be further noted that the anti-corrosion component can be a lining or a coating, and is not limited to this in this application; the material of the anti-corrosion component can be polytetrafluoroethylene, polyvinylidene fluoride, or other materials that are resistant to chemical corrosion, and the specific material can be selected according to actual needs.

[0146] In the above technical solution, by providing anti-corrosion components on the inner wall of the transfer tank 40, the corrosion of the transfer tank 40 by the waste liquid can be effectively reduced, thereby further improving the service life and reliability of the transfer tank 40.

[0147] In some embodiments, the corrosion-resistant parts are Teflon parts.

[0148] Among them, Teflon parts are polytetrafluoroethylene parts. Polytetrafluoroethylene parts have good chemical resistance and good thermal stability. Therefore, using Teflon parts for corrosion protection can improve the durability of the transfer tank 40, thereby improving the reliability of the transfer tank 40 in use. At the same time, it can also reduce maintenance costs and lower the maintenance costs of the waste liquid treatment device 100.

[0149] In the above technical solution, by setting the anti-corrosion parts to Teflon parts, the durability of the transfer tank 40 can be improved, thereby improving the reliability of the transfer tank 40 in use. At the same time, it can also reduce maintenance costs and lower the maintenance costs of the waste liquid treatment device 100.

[0150] In some embodiments, the thickness of the Teflon part ranges from 0.4 mm to 0.5 mm.

[0151] For example, the thickness of Teflon parts can range from 0.4mm, 0.45mm or 0.5mm.

[0152] In the above technical solution, by setting the thickness range of Teflon parts to 0.4mm-0.5mm, the thickness of the anti-corrosion parts can meet the requirements of anti-corrosion without being too large, thereby reducing the production cost of the entire transfer tank 40.

[0153] In some embodiments, the waste liquid treatment device 100 further includes a second air inlet pipe connected to the transfer tank 40 for supplying inert gas into the transfer tank 40.

[0154] Inert gases are elements that do not readily react chemically with other substances at room temperature and pressure, exhibiting relatively high chemical stability. Inert gases include various types, such as argon, helium, neon, and nitrogen.

[0155] It should be noted that the second air inlet pipe is connected to the transfer tank 40 to supply inert gas to replace the air in the transfer tank 40, thus eliminating the presence of oxygen in the transfer tank 40. Furthermore, it should be noted that the transfer tank 40 primarily stores a pseudotrimethylbenzene solution, which has a low flash point and is highly explosive. Therefore, by providing inert gas to the transfer tank 40 through the second air inlet pipe, oxygen, one of the three elements of combustion, can be isolated, thereby further reducing the risk of pseudotrimethylbenzene solution explosion.

[0156] In the above technical solution, by providing inert gas into the transfer tank 40 through a second air inlet pipe, oxygen, one of the three elements of combustion, can be isolated, thereby further reducing the risk of explosion of the pseudotrimethylbenzene solution.

[0157] In some embodiments, the inert gas is nitrogen.

[0158] Nitrogen has relatively stable chemical properties and relatively low cost. Therefore, using nitrogen as an inert gas can further reduce the cost of waste liquid treatment.

[0159] In the above technical solution, by setting nitrogen as the inert gas, the cost of waste liquid treatment can be further reduced.

[0160] In some embodiments, the transfer tank 40 is provided with a detection device, wherein the detection device is disposed on the transfer tank 40 and is used to detect the liquid level, temperature and / or oxygen concentration in the transfer tank 40 in real time.

[0161] It is understood that the detection device includes at least one detector for real-time detection of one or more of the liquid level, temperature, and oxygen concentration in the transfer tank 40. For example, when the detection device is used to detect the liquid level in the transfer tank 40, the detector may be a level gauge 161; when the detection device is used to detect the temperature in the transfer tank 40, the detector may be a temperature sensor; and when the detection device is used to detect the oxygen concentration in the transfer tank 40, the detector may be an oxygen concentration detector.

[0162] It should be noted that the detection device is used to detect the liquid level in the transfer tank 40, mainly to detect the real-time liquid level in the transfer tank 40. In this way, when liquid is injected into the transfer tank 40 by the transfer pump, it can be monitored in real time, thereby preventing overflow. When the transfer tank 40 contains a certain amount of solution, the liquid level can also be detected to determine whether there is a leak. This can help staff to detect potential leaks in a timely manner and take corresponding measures to reduce risks and losses.

[0163] The detection device is used to detect the temperature in the transfer tank 40, which can indirectly detect whether the solution in the transfer tank 40 has the potential for explosion and combustion, so that corresponding measures can be taken to reduce the risk of explosion and loss.

[0164] The detection device is used to detect the oxygen concentration in the transfer tank 40. It is mainly used to detect whether the oxygen in the transfer tank 40 is discharged when nitrogen replaces the air in the transfer tank 40, thereby ensuring that there is no oxygen in the transfer tank 40, which can reduce the risk of explosion of the pseudotrimethylbenzene solution.

[0165] It should be further noted that when the detection device is used to detect the liquid level of the transfer tank 40, the detector used can be the same as the first detection component 16 and the second detection component 24 as the third detection component 42. The specific components are not described in detail in this embodiment.

[0166] Optionally, the detection device also has an alarm function, such as low liquid level alarm, high liquid level alarm, and overheating alarm. This allows operators to more clearly and quickly identify the problem, thereby improving the processing speed and effectively reducing the probability of accidents.

[0167] The transfer tank 40 is also equipped with a pressure relief mechanism, which is used to release the pressure inside the transfer tank 40.

[0168] The pressure relief mechanism is mainly used to automatically release pressure when the pressure inside the tank exceeds the set range, thereby preventing explosions or other safety accidents caused by overpressure.

[0169] It should be noted that the pressure relief mechanism can be an explosion-proof valve, safety valve, or other valve that releases pressure.

[0170] In the above technical solution, by setting up a detection device, the liquid level, temperature and / or oxygen concentration in the transfer tank 40 can be detected in real time, thereby indirectly detecting whether the solution in the transfer tank 40 has potential leakage, explosion and combustion problems, so that corresponding measures can be taken quickly, thereby reducing the risk of explosion and loss; by setting up a pressure relief mechanism, the pressure in the transfer tank 40 can be automatically released when the pressure exceeds the set range, thereby preventing explosion or other safety accidents caused by overpressure.

[0171] In some embodiments, refer to Figure 4 The waste liquid treatment device 100 also includes a third detection component 42, which is installed on the transfer tank 40 and is used to detect the liquid volume in the transfer tank 40 in real time.

[0172] It should be noted that the third detection component 42 may have the same structure as the first detection component 16. The third detection component 42 includes one or more of the following: a level gauge 161, a weighing sensor 162, and a high level sensor 163. The level gauge 161 is used to detect the liquid level height in the transfer tank 40; the weighing sensor 162 is used to detect the weight of the transfer tank 40; and the high level sensor 163 is used to detect the highest liquid level in the transfer tank 40.

[0173] In the above technical solution, by setting a third detection component 42, the liquid volume in the transfer tank 40 can be detected in real time. This can effectively prevent overflow when transporting waste liquid into the transfer tank 40. At the same time, the detection of liquid volume can also determine whether there is a leak. This can help staff to discover potential leakage problems in time and take corresponding measures quickly, thereby reducing the risks and losses in the waste liquid transfer process.

[0174] In some embodiments, refer to Figure 1 and Figure 5 The waste liquid treatment device 100 further includes: a temporary storage tank 50, a fourth inlet pipe 51, and a third drive pump 52 connected in series with the fourth inlet pipe 51. The temporary storage tank 50 has a receiving cavity configured to store waste liquid. The temporary storage tank 50 is connected to the reaction vessel 10 through a first inlet pipe 11. The fourth inlet pipe 51 is connected to the temporary storage tank 50 and is used to transport waste liquid into the receiving cavity. The third drive pump 52 is configured to pump waste liquid into the receiving cavity.

[0175] It is understood that the waste liquid of this application is first stored in the temporary storage tank 50, and then sent to the reaction tank 10 for reaction treatment through the first drive pump 14 and the first inlet pipe 11. This can ensure the stability of the transportation, realize the continuity of waste liquid treatment, and thus improve the waste liquid treatment rate.

[0176] In the above technical solution, by setting up a temporary storage tank 50, the stability of the delivery of the first drive pump 14 can be ensured, thereby achieving the continuity of waste liquid treatment and improving the waste liquid treatment rate.

[0177] In some embodiments, refer to Figure 5 The waste liquid treatment device 100 also includes a fourth detection component 53, which is installed on the temporary storage tank 50 and is used to detect the liquid volume in the temporary storage tank 50 in real time.

[0178] It should be noted that the fourth detection component 53 may have the same structure as the first detection component 16. The fourth detection component 53 includes one or more of the following: a level gauge 161, a weighing sensor 162, and a high level sensor 163. The level gauge 161 is used to detect the liquid level in the temporary storage tank 50; the weighing sensor 162 is used to detect the weight of the temporary storage tank 50; and the high level sensor 163 is used to detect the highest liquid level in the temporary storage tank 50.

[0179] In the above technical solution, by setting the fourth detection component 53, the liquid volume in the temporary storage tank 50 can be detected in real time. This can effectively prevent overflow when waste liquid is transported into the temporary storage tank 50. At the same time, the detection of liquid volume can also determine whether there is a leak. This can help staff to discover potential leakage problems in time and take corresponding measures quickly, thereby reducing the risks and losses in the waste liquid transfer process.

[0180] The following is for reference. Figure 1 A solid-state battery production system 1000 according to an embodiment of the second aspect of this application is described. Figure 1 This is a schematic diagram of a solid-state battery production system 1000 according to an embodiment of this application.

[0181] An embodiment of this application also provides a solid-state battery production system 1000, including: a stirring device 200 and a waste liquid treatment device 100 according to the first aspect of this application. The waste liquid treatment device 100 is used to treat cleaning waste liquid in the stirring device 200. The stirring device 200 has a waste liquid pipe connected to a first liquid inlet pipe 11.

[0182] Specifically, the stirring device 200 is a device used in the solid-state battery production process, mainly for stirring and mixing slurry. After production is completed, the stirring device 200 needs to be cleaned, and the waste liquid after cleaning enters the waste liquid treatment device 100 for treatment through the waste liquid pipe.

[0183] For example Figure 1 As shown, the solid-state battery production system 1000 also includes a central control system 300, which is communicatively connected to the waste liquid treatment device 100 and the stirring device 200 to enhance the automation of the solid-state battery production system 1000.

[0184] In the above technical solution, by setting up the waste liquid treatment device 100 of the first aspect of this application, the sulfides in the waste liquid generated in the solid-state battery production system 1000 can be fully treated, thereby reducing the probability of hydrogen sulfide being generated during the waste liquid transfer process, thus protecting the occupational health of operators. At the same time, by setting up the gas detector 15, over-treatment can also be prevented, thereby reducing resource waste and improving economic efficiency.

[0185] Thirdly, embodiments of this application also provide a waste liquid treatment method, which is used in the solid-state battery production system 1000 according to the second aspect of this application. The waste liquid treatment method includes:

[0186] Step S11: Inject waste liquid into reaction vessel 10;

[0187] Step S12: Add deionized water to reaction vessel 10 in portions, and simultaneously introduce nitrogen gas.

[0188] Step S13: Detect hydrogen sulfide in reaction vessel 10;

[0189] Step S14: If hydrogen sulfide is not detected for a preset time, the waste liquid treatment in reaction tank 10 is completed.

[0190] Specifically, the reaction tank 10 first sends a material request signal. At this time, the first drive pump 14 starts and drives the waste liquid into the reaction tank 10 through the first inlet pipe 11. Then, the first drive pump 14 is turned off, and deionized water is added to the reaction tank 10 in stages through the second inlet pipe 12. At the same time, nitrogen gas is introduced into the reaction tank 10 to discharge the hydrogen sulfide generated by the reaction. Meanwhile, the gas detector 15 monitors the concentration of hydrogen sulfide in the reaction tank 10 in real time. If no hydrogen sulfide is detected for a preset time, the waste liquid treatment in the reaction tank 10 is completed.

[0191] It should be noted that when adding deionized water to reaction tank 10 in several batches, a certain time interval is required, and the amount of deionized water should remain consistent. The specific amount added should be calculated based on the actual situation.

[0192] In the above technical solution, by using the waste liquid treatment device 100 of the first aspect to treat the waste liquid, the sulfides in the waste liquid can be fully treated, thereby reducing the probability of hydrogen sulfide being generated during the transfer of the waste liquid, thus protecting the occupational health of the operators. At the same time, it can also prevent overtreatment, thereby reducing resource waste and improving economic efficiency.

[0193] In some embodiments, the preset time is 15-25 minutes.

[0194] For example, the preset time can be 15 minutes, 20 minutes, or 25 minutes.

[0195] In the above technical solution, by setting the preset time to 15min-25min, the time can be prevented from being too long, thus avoiding problems such as low processing speed and waste of resources. At the same time, the preset time is also prevented from being too short, thus effectively preventing the occurrence of incomplete processing.

[0196] In some embodiments, the waste liquid treatment device 100 further includes a settling tank 20, the inlet end of which is connected to the outlet end of the reaction tank 10, and the waste liquid treatment method further includes transferring the treated liquid obtained after the reaction in the reaction tank 10 to the settling tank 20 and settling it until it separates into layers.

[0197] It should be noted that the treatment solution includes pseudotrimethylbenzene and water. Pseudotrimethylbenzene is insoluble in water. Therefore, when the treatment solution is left to stand in the settling tank 20, it will separate into layers. After the layers are separated, the water can be drained and only the pseudotrimethylbenzene is treated. It should be further noted that the pseudotrimethylbenzene solution needs to be centrally treated by a professional organization, which can reduce the cost of transferring and treating waste liquid.

[0198] In the above technical solution, by transferring the treated liquid obtained after reaction in reaction tank 10 to settling tank 20 and allowing it to settle until it separates into layers, water and pseudotrimethylbenzene can be treated separately, thereby reducing the cost of waste liquid transfer and treatment.

[0199] In some embodiments, the waste liquid treatment device 100 further includes a solid-liquid separator 30, which is connected between the reaction tank 10 and the settling tank 20.

[0200] The processed solution obtained after the reaction in reaction tank 10 is transferred to settling tank 20 and allowed to stand until it separates into layers, including:

[0201] Step S21: Pump out the processing liquid formed after the reaction in reaction tank 10;

[0202] Step S22: Turn on the solid-liquid separator 30 to separate the solid and liquid;

[0203] Step S23: Drive the liquid into the settling tank 20 and let it stand until it separates into layers.

[0204] Specifically, the processed liquid formed after the reaction in the reaction tank 10 is first pumped out, and the solid-liquid separator 30 is turned on. The pumped processed liquid flows into the solid-liquid separator 30, which separates and processes the processed liquid. Then, the separated liquid is sent to the settling tank 20 to stand until it separates into layers.

[0205] In the above technical solution, by turning on the solid-liquid separator 30 to separate solids and liquids, the solid waste and liquid waste in the treatment liquid can be treated in a targeted manner, thereby improving the overall process efficiency.

[0206] In some embodiments, the waste liquid treatment device 100 further includes: a transfer tank 40, which is connected to a settling tank 20; the waste liquid treatment method further includes:

[0207] Step S31: Transfer the upper layer of liquid in the settling tank 20 to the transfer tank 40;

[0208] Step S32: Nitrogen gas is introduced into the transfer tank 40 to displace the air in the transfer tank 40.

[0209] It should be noted that the treatment solution includes pseudotrimethylbenzene and water. Pseudotrimethylbenzene is insoluble in water and has a lower density than water. Therefore, when the treatment solution is allowed to settle in the settling tank 20, the pseudotrimethylbenzene floats on top of the water. Thus, when transferring the pseudotrimethylbenzene to the transfer tank 40, the lower layer of water must first be drained, and then the upper layer of pseudotrimethylbenzene is pumped into the transfer tank 40. Furthermore, because pseudotrimethylbenzene solution has a low flash point and is highly explosive, nitrogen gas is introduced into the transfer tank 40 after the pseudotrimethylbenzene is transferred to 40 to displace the air. This isolates the oxygen, one of the three essential elements for combustion, and further reduces the risk of explosion of the pseudotrimethylbenzene solution.

[0210] In the above technical solution, by setting up a transfer tank 40, the upper layer liquid in the settling tank 20 can be transferred to a professional department for processing; by introducing nitrogen into the transfer tank 40 to isolate oxygen, one of the three elements of combustion, the risk of explosion of the pseudotrimethylbenzene solution can be further reduced.

[0211] The following will refer to Figures 1-5 This application describes a solid-state battery production system 1000 according to a specific embodiment.

[0212] Reference Figure 1 The solid-state battery production system 1000 includes: a central control system 300, a stirring device 200, and a waste liquid treatment device 100. The waste liquid treatment device 100 is used to treat the cleaning waste liquid in the stirring device 200. The stirring device 200 has a waste liquid pipe and is connected to the waste liquid treatment device through the waste liquid pipe. The central control system 300 is communicatively connected to the stirring device 200 and the waste liquid treatment device 100.

[0213] Specifically, the waste liquid treatment device 100 includes: multiple tanks, including: a temporary storage tank 50, a reaction tank 10, and a settling tank 20, wherein the temporary storage tank 50, the reaction tank 10, and the settling tank 20 are connected in sequence, the temporary storage tank 50 has a receiving cavity configured to store waste liquid; the reaction tank 10 has a reaction chamber, in which the waste liquid is suitable for undergoing a chemical reaction to generate hydrogen sulfide; the settling tank 20 is used to settling and separating the treated liquid obtained after treatment by the reaction tank 10.

[0214] Specifically, the inlet of the temporary storage tank 50 is connected to the waste liquid pipe of the stirring device 200 through the fourth inlet pipe 51, the outlet of the temporary storage tank 50 is connected to the inlet of the reaction tank 10 through the first inlet pipe 11, and the outlet of the reaction tank 10 is connected to the inlet of the settling tank 20 through the third inlet pipe 21.

[0215] The waste liquid treatment device 100 also includes a plurality of drive pumps, wherein the plurality of drive pumps include a first drive pump 14, a second drive pump 22 and a third drive pump 52. Specifically, the first drive pump 14 is connected in series with the first inlet pipe 11 for transporting the waste liquid in the temporary storage tank 50 to the reaction tank 10, the second drive pump 22 is connected in series with the third inlet pipe 21 for transporting the treated liquid after reaction in the reaction tank 10 to the settling tank 20, and the third drive pump 52 is connected in series with the fourth inlet pipe 51 for transporting the cleaning waste liquid in the stirring device 200 to the temporary storage tank 50 for storage.

[0216] The waste liquid treatment device 100 further includes: multiple detection components, including: a first detection component 16, a second detection component 24 and a fourth detection component 53, wherein the first detection component 16, the second detection component 24 and the fourth detection component 53 are respectively arranged on the reaction tank 10, the settling tank 20 and the temporary storage tank 50, and are used to detect the liquid volume in the reaction tank 10, the settling tank 20 and the temporary storage tank 50 in real time.

[0217] Specifically, the first detection component 16, the second detection component 24, and the fourth detection component 53 have the same structure, each including: a level gauge 161 for detecting the liquid level height in the reaction tank 10, a weighing sensor 162 for detecting the weight of the reaction tank 10, a high liquid level sensor 163 for detecting the highest liquid level in the reaction tank 10, and an actuator 164 configured to stop the drive pump when the waste liquid reaches the highest liquid level.

[0218] Furthermore, multiple drive pumps are all pneumatic pumps. The high liquid level sensor 163 and the actuator 164 of multiple detection sensors are combined to form a float liquid level switch assembly. The float liquid level switch assembly includes a float liquid level switch and an air pipe 1641. The float liquid level switch and part of the air pipe 1641 are arranged in the reaction chamber. The float liquid level switch includes a float, a connecting rod and a ball valve. The ball valve is connected in series on the air pipe 1641 and is connected to the float through the connecting rod. When the pneumatic pump is normally feeding liquid, the ball valve is in the open state, and the air pipe 1641 provides air to the ball valve. When the waste liquid gradually rises in multiple tanks, the waste liquid drives the float to rise. When the highest liquid level is reached, the float drives the ball valve through the connecting rod to close the gas passage of the air pipe 1641, thereby stopping the pneumatic pump.

[0219] The waste liquid treatment device 100 also includes: a first air inlet pipe, a first exhaust pipe, a gas detector 15, a second liquid inlet pipe 12 and a nozzle 13, wherein the first air inlet pipe, the first exhaust pipe, the gas detector 15 and the second liquid inlet pipe 12 are all arranged on the reaction tank 10 and are connected to the reaction chamber of the reaction tank 10.

[0220] Specifically, the first exhaust pipe is connected to the reaction tank 10 to discharge the gas in the reaction chamber; the first inlet pipe is connected to the reaction tank 10 to supply inert gas to the reaction tank 10 so that hydrogen sulfide can be discharged from the reaction tank 10 through the first exhaust pipe; the gas detector 15 is installed in the reaction tank 10 to detect the hydrogen sulfide in the reaction tank 10; the nozzle 13 is located in the reaction tank 10 and connected to the outlet end of the second liquid inlet pipe 12 to spray deionized water into the reaction tank 10.

[0221] The waste liquid treatment device 100 also includes an oil-water interface measuring instrument 23 and a solid-liquid separator 30. The oil-water interface measuring instrument 23 is installed on the settling tank 20 and is used to measure the oil-water interface of the liquid in the settling tank 20. The solid-liquid separator 30 is used for solid-liquid separation and is connected in series between the reaction tank 10 and the second drive pump 22.

[0222] The waste liquid treatment device 100 also includes a transfer tank 40 and a transfer pump 41, wherein the transfer tank 40 is connected to the settling tank 20, and the transfer pump 41 is used to transfer the organic solvent in the settling tank 20 to the transfer tank 40.

[0223] Specifically, the transfer tank 40 is an explosion-proof tank. The inner wall of the transfer tank 40 is lined with Teflon. The transfer tank 40 is equipped with a detection device and a pressure relief mechanism. The detection device is located on the transfer tank 40 and is used to detect the liquid level, temperature and / or oxygen concentration in the transfer tank 40 in real time. The pressure relief mechanism is located on the transfer tank 40 and is used to release the pressure in the transfer tank 40.

[0224] The waste liquid treatment device 100 also includes a second air inlet pipe, which is connected to the transfer tank 40 to supply nitrogen gas into the transfer tank 40 to replace the air in the transfer tank 40.

[0225] The waste liquid treatment device 100 also includes a third detection component 42, which is installed on the transfer tank 40 and is used to detect the liquid volume in the transfer tank 40 in real time. The third detection component 42 has the same structure as the first detection component 16.

[0226] The following reference Figure 1 A waste liquid treatment method for a solid-state battery production system 1000 is described.

[0227] First, the cleaning waste liquid generated by the stirring device 200 is pumped to the temporary storage tank 50 by the third drive pump 52 for storage. When the storage volume reaches a certain amount, the waste liquid treatment process is started.

[0228] First, the reaction tank 10 sends a material request signal to the central control system 300. The central control system 300 then controls the first drive pump 14 to start, which delivers waste liquid into the reaction tank 10. Once a certain height is reached, the first drive pump 14 stops running. Then, deionized water is added to the reaction tank 10 in stages through the second inlet pipe 12. At the same time, nitrogen gas is introduced into the reaction tank 10 to expel the hydrogen sulfide produced by the reaction. Meanwhile, the gas detector 15 monitors the concentration of hydrogen sulfide in the reaction tank 10 in real time. If no hydrogen sulfide is detected for a preset time, the waste liquid treatment in the reaction tank 10 is completed.

[0229] After the reaction in the reaction tank 10 is completed, the second drive pump 22 is turned on to pump out the processed liquid obtained after the reaction in the reaction tank 10. At the same time, the solid-liquid separator 30 is turned on to separate the solid and the liquid. The second drive pump 22 drives the liquid into the settling tank 20 to settle until it separates into layers.

[0230] After the treatment liquid in the settling tank 20 separates into layers, the transfer pump 41 is started to transfer the upper layer of liquid in the settling tank 20 to the transfer tank 40, and nitrogen gas is introduced into the transfer tank 40 to replace the air in the transfer tank 40, thereby achieving nitrogen sealing of the liquid in the transfer tank 40.

[0231] In the above technical solution, by setting up the waste liquid treatment device 100 of the first aspect of this application, the sulfides in the waste liquid generated in the solid-state battery production system 1000 can be fully treated, thereby reducing the probability of hydrogen sulfide being generated during the waste liquid transfer process, thus protecting the occupational health of operators. At the same time, by setting up the gas detector 15, over-treatment can also be prevented, thereby reducing resource waste and improving economic efficiency.

[0232] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A waste liquid treatment device, wherein the waste liquid treatment device is used to treat waste liquid generated during the production of solid-state batteries, characterized in that, include: The reaction vessel (10) has a reaction chamber in which the waste liquid is used to undergo a chemical reaction to generate hydrogen sulfide; The first liquid inlet pipe (11) is connected to the reaction tank (10) and is connected in series with a first drive pump (14) for transporting the waste liquid to the reaction chamber; The second inlet pipe (12) is connected to the reaction tank (10) and is used to transport the solution that reacts with the sulfides in the waste liquid; The first exhaust pipe is connected to the reaction vessel (10) and is used to exhaust the gas in the reaction chamber; A gas detector (15) is installed in the reaction vessel (10) to detect hydrogen sulfide in the reaction vessel (10); The first drive pump (14) is a pneumatic pump. The waste liquid treatment device further includes a float level switch assembly, which includes a float level switch and an air pipe (1641). Parts of the float level switch and the air pipe (1641) are arranged in the reaction chamber. The air pipe (1641) is connected to the pneumatic pump and is used to supply compressed air to the pneumatic pump. The float level switch includes a float, a connecting rod, and a ball valve. The ball valve is connected in series on the air pipe (1641) and is connected to the float through the connecting rod. When the waste liquid reaches the highest level, the float drives the ball valve through the connecting rod to close the air pipe (1641) to stop supplying air to the pneumatic pump. The waste liquid treatment device further includes: a first detection component (16), which is disposed on the reaction tank (10) and used to detect the liquid volume in the reaction chamber in real time. The first detection component (16) includes: A level gauge (161) is used to detect the liquid level in the reaction tank (10); a weighing sensor (162) is used to detect the weight of the reaction tank (10); and a high liquid level sensor (163) is used to detect the highest liquid level in the reaction tank (10). The outlet end of the second liquid inlet pipe (12) is provided with a nozzle (13), which is located inside the reaction tank (10) and is used to spray deionized water into the reaction tank (10).

2. The waste liquid treatment device according to claim 1, characterized in that, Also includes: The first air inlet pipe is connected to the reaction vessel (10) and is used to provide inert gas to the reaction vessel (10) so that the hydrogen sulfide is discharged from the reaction vessel (10) through the first exhaust pipe.

3. The waste liquid treatment device according to any one of claims 1-2, characterized in that, Also includes: A settling tank (20) is used to settling and separating the treatment liquid obtained after being processed by the reaction tank (10); The third liquid inlet pipe (21) is connected between the reaction tank (10) and the settling tank (20); A second drive pump (22) connected in series with the third inlet pipe (21) is used to pump the treatment liquid into the settling tank (20).

4. The waste liquid treatment device according to claim 3, characterized in that, Also includes: Oil-water interface measuring instrument (23) is installed on the settling tank (20) and is used to measure the oil-water interface of the liquid in the settling tank (20).

5. The waste liquid treatment device according to claim 3, characterized in that, Also includes: The second detection component (24) is disposed on the settling tank (20) and is used to detect the liquid volume in the settling tank (20) in real time.

6. The waste liquid treatment device according to claim 3, characterized in that, Also includes: A solid-liquid separator (30) is used for solid-liquid separation and is connected in series between the reaction vessel (10) and the second drive pump (22).

7. The waste liquid treatment device according to claim 3, characterized in that, Also includes: A transfer tank (40) and a transfer pump (41) are provided, wherein the transfer tank (40) is connected to the settling tank (20), and the transfer pump (41) is used to transfer the organic solvent in the settling tank (20) to the transfer tank (40).

8. The waste liquid treatment device according to claim 7, characterized in that, The transfer tank (40) is an explosion-proof tank.

9. The waste liquid treatment device according to claim 8, characterized in that, The inner wall of the transfer tank (40) is provided with anti-corrosion components.

10. The waste liquid treatment device according to claim 9, characterized in that, The corrosion-resistant parts are Teflon parts.

11. The waste liquid treatment device according to claim 10, characterized in that, The thickness of the Teflon part ranges from 0.4mm to 0.5mm.

12. The waste liquid treatment device according to claim 7, characterized in that, Also includes: The second air inlet pipe is connected to the transfer tank (40) and is used to supply inert gas into the transfer tank (40).

13. The waste liquid treatment device according to claim 12, characterized in that, The inert gas is nitrogen.

14. The waste liquid treatment device according to claim 7, characterized in that, The transfer tank (40) is equipped with: A detection device is installed on the transfer tank (40) for real-time detection of the liquid level, temperature and / or oxygen concentration in the transfer tank (40); A pressure relief mechanism is provided on the transfer tank (40) and is used to release the pressure inside the transfer tank (40).

15. The waste liquid treatment device according to claim 7, characterized in that, It also includes a third detection component (42), which is disposed on the transfer tank (40) and is used to detect the liquid volume in the transfer tank (40) in real time.

16. The waste liquid treatment device according to claim 1, characterized in that, Also includes: A temporary storage tank (50) has a receiving cavity configured to store the waste liquid, and the temporary storage tank (50) is connected to the reaction tank (10) via the first inlet pipe (11); The fourth inlet pipe (51) is connected to the temporary storage tank (50) and is used to transport the waste liquid into the receiving cavity; A third drive pump (52) is connected in series with the fourth inlet pipe (51), the third drive pump (52) being configured to pump the waste liquid into the containment cavity.

17. The waste liquid treatment device according to claim 16, characterized in that, Also includes: The fourth detection component (53) is disposed on the temporary storage tank (50) and is used to detect the liquid volume in the temporary storage tank (50) in real time.

18. A solid-state battery production system, characterized in that, include: The stirring device and the waste liquid treatment device according to any one of claims 1-17, wherein the waste liquid treatment device is used to treat the cleaning waste liquid in the stirring device, the stirring device having a waste liquid pipe connected to the first inlet pipe (11).

19. A method for treating waste liquid, characterized in that, The waste liquid treatment method is used in the solid-state battery production system according to claim 18, and the waste liquid treatment method includes: Step S11: Inject waste liquid into the reaction vessel (10); Step S12: Deionized water is added to the reaction vessel (10) in portions, and nitrogen gas is introduced at the same time; Step S13: Detect hydrogen sulfide in the reaction vessel (10); Step S14: If hydrogen sulfide is not detected for a preset time, the waste liquid treatment in the reaction tank (10) is completed.

20. The waste liquid treatment method according to claim 19, characterized in that, The preset time is 15-25 minutes.

21. The waste liquid treatment method according to claim 20, characterized in that, The waste liquid treatment device further includes: a settling tank (20), the inlet of which is connected to the outlet of the reaction tank (10), and the waste liquid treatment method further includes: The processed liquid obtained after the reaction in the reaction tank (10) is transferred to the settling tank (20) and left to stand until it separates into layers.

22. The waste liquid treatment method according to claim 21, characterized in that, The waste liquid treatment device further includes a solid-liquid separator (30), which is connected between the reaction tank (10) and the settling tank (20). The process involves transferring the treated liquid obtained after the reaction in the reaction tank (10) to a settling tank (20) and allowing it to settle until it separates into layers, including: Step S21: Pump out the processing liquid formed in the reaction vessel (10) after the reaction is completed; Step S22: Turn on the solid-liquid separator (30) to separate the solid and liquid; Step S23: Drive the liquid into the settling tank (20) and let it stand until it separates into layers.

23. The waste liquid treatment method according to claim 21, characterized in that, The waste liquid treatment device further includes: a transfer tank (40), which is connected to the settling tank (20), and the waste liquid treatment method further includes: Step S31: Transfer the upper layer liquid in the settling tank (20) to the transfer tank (40); Step S32: Nitrogen gas is introduced into the transfer tank (40) to displace the air in the transfer tank (40).

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