Sodium ion electrolyte molecular sieve online dehydration production device
Through the online dehydration device, the nitrogen stream is used for heating, cooling and drying, the problems of poor dehydration effect and high cost of sodium ion electrolyte molecular sieve are solved, and efficient and low-cost molecular sieve dehydration is achieved.
Patent Information
- Application Number
- CN202421944922.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-08-12
AI Technical Summary
In the prior art, the dehydration treatment of sodium ion electrolyte molecular sieve is poor and has high cost. After the molecular sieve is taken out, it continues to absorb moisture in the air, resulting in waste and increased costs.
A device including solvent tank, dewaterer, nitrogen pump, circulation pump, cooler, gas-liquid separator, wastewater tank, circulation fan, heater and silicone dryer is designed. Online dehydration is carried out through nitrogen stream, combined with heating, cooling and drying treatment, to avoid further absorbing moisture after the molecular sieve is taken out, and cost is reduced.
It realizes efficient molecular sieve dehydration treatment, reduces dehydration costs, avoids waste of molecular sieve and hazardous waste treatment requirements, and improves dehydration efficiency and pressure and temperature stability in the equipment.
Smart Images
Figure CN223221012U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of molecular sieve dehydration, and more specifically relates to a production device for online dehydration of sodium ion electrolyte molecular sieve. Background Art
[0002] The core of the new round of energy revolution is renewable energy generation and large-scale energy storage. The former is now close to maturity, while the latter is still under development. Among the many electrochemical energy storage technologies, sodium-ion batteries are one of the ideal choices for large-scale energy storage due to their advantages such as abundant resources, low cost, high safety, high conversion efficiency, flexibility and ease of integration, fast response speed, and maintenance-free. Electrolyte is one of the four main materials of power batteries and has an important impact on the battery's service life and safety, high and low temperature, fast charging and other performance. Sodium salt is the core of the three main parts of the electrolyte and determines the cost and performance of the electrolyte.
[0003] Nowadays, before compounding the electrolyte on the market, the first thing to do is to check whether the moisture content of the solvent meets the standard. If it does not meet the standard, 4A or 5A molecular sieves are used for dehydration. When the dehydration meets the standard, the molecular sieve is used again. After the molecular sieve is saturated with adsorption, the dehydration requirement cannot be met. The molecular sieve in the adsorption column needs to be taken out and returned to the manufacturer for processing or treated as solid waste. However, this treatment method wastes labor when the molecular sieve is taken out, and will cause air pollution, and there is also a waste of molecular sieves; after the molecular sieve is taken out, it will continue to absorb moisture in the air, resulting in increased dehydration costs; and it is also necessary to increase the storage space for hazardous waste, thereby increasing costs. Therefore, a production device for online dehydration of sodium ion electrolyte molecular sieves with high treatment effect and low cost is needed. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a production device for online dehydration of sodium ion electrolyte molecular sieve, which can meet the requirements of high sodium ion electrolyte dehydration treatment effect and low cost.
[0005] The utility model discloses a production device for online dehydration of sodium ion electrolyte molecular sieve, comprising a solvent tank, a dehydrator, two nitrogen pumps, a circulation pump, a cooler, a gas-liquid separator, a waste water tank, a circulation fan, a heater and a silica gel dryer. The solvent tank, the dehydrator, the cooler, the gas-liquid separator, the circulation fan, the heater and the silica gel dryer are sequentially connected through pipelines. Any nitrogen pump is connected to the dehydrator through a pipeline, and the other nitrogen pump is connected to the gas-liquid separator through a pipeline. Both ends of the circulation pump are respectively connected to the solvent tank and the dehydrator through pipelines. The water tank is separately connected to the cooler and the gas-liquid separator through pipelines, and the silica gel dryer and the dehydrator are connected through another pipeline. The dehydrator is provided with a molecular sieve for adsorption, and dehydration is carried out online through a nitrogen flow, and the dehydration treatment effect is high; the molecular sieve in the dehydrator can be dehydrated without taking out the molecular sieve, which prevents the molecular sieve from continuing to absorb moisture in the air after being taken out, thereby reducing the dehydration cost; the nitrogen flow is heated, cooled and dried to prevent the nitrogen flow from carrying moisture for circulation, thereby improving the dehydration efficiency, eliminating the need to increase hazardous waste storage space, and reducing costs.
[0006] As a further improvement of the present invention, the heater is provided with a thermal oil inlet and a thermal oil outlet, through which the thermal oil can conduct heat efficiently, provide stable temperature control, and make the heating process more reliable and precise; the wastewater tank is provided with a wastewater outlet for regular drainage and periodic waste treatment, thereby reducing costs and pollution.
[0007] As a further improvement of the present invention, when the nitrogen pump is turned on to fill nitrogen into the gas-liquid separator, the pressure inside the device is 2Kpa, which improves the dehydration efficiency and allows water vapor to be fully discharged from the molecular sieve.
[0008] In a further embodiment, as shown in the figure, the heater is turned on to control the outlet gas temperature to 175° C.-180° C. to ensure that the nitrogen is fully heated.
[0009] As a further improvement of the present invention, the circulating fan performs continuous circulation for 2 hours during dehydration to ensure sufficient nitrogen circulation and improve dehydration efficiency.
[0010] As a further improvement of the present invention, when the difference between the outlet temperature of the dehydrator and the temperature inside the dehydrator is less than 3°C, it means that the dehydration is sufficient. When the temperature inside the dehydrator is less than 40°C, the molecular sieve is put back into use.
[0011] The solvent in the solvent tank reaches the dehydrator through the circulation pump for adsorption, and the adsorbed solvent flows back to the solvent tank; when the molecular sieve is saturated with adsorption, stop the circulation pump, fill the dehydrator with nitrogen through the nitrogen pump, press the solvent in the molecular sieve back to the solvent tank, turn on the nitrogen pump to fill the nitrogen into the gas-liquid separator, turn on the cooler, circulation fan and heater to circulate the nitrogen between the dehydrator and the silica gel dryer, and cool, dry and heat the nitrogen so that the heat of the heated nitrogen vaporizes the water in the dehydrator and liquefies it in the gas-liquid separator with the nitrogen circulation and is discharged through the waste water tank. When the difference between the outlet temperature of the dehydrator and the temperature inside the dehydrator is less than 3°C, the dehydration is terminated, the heat transfer oil inlet of the heater is closed, and the circulation cooling is continued. When the temperature inside the dehydrator is less than 40°C, turn off the nitrogen pump and circulation fan, turn on the circulation pump, and the molecular sieve is put into use again.
[0012] Compared with the prior art, the utility model has the following beneficial effects: online dehydration through nitrogen flow, high dehydration treatment effect; dehydration of the molecular sieve in the dehydrator can be completed without taking out the molecular sieve, preventing the molecular sieve from continuing to absorb moisture in the air after being taken out, thereby reducing dehydration costs; the nitrogen flow is heated, cooled and dried, preventing the nitrogen flow from carrying moisture for circulation, thereby improving dehydration efficiency; a circulating fan is provided between the gas-liquid separator and the heater, so that the nitrogen is heated evenly and the pressure and temperature in the device are stable; there is no need to increase the storage space for hazardous waste, thereby reducing costs; the pressure in the device is 2Kpa when the nitrogen pump is turned on to fill the gas-liquid separator with nitrogen, thereby improving dehydration efficiency and allowing water vapor to be fully discharged from the molecular sieve; the heater is turned on to control the outlet temperature to 175°C-180°C, thereby ensuring that the nitrogen is fully heated. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural diagram of the utility model;
[0014] Figure 2 This is a schematic structural diagram of the dehydrator of the present utility model.
[0015] Description of the numbers in the figure:
[0016] Solvent tank 1; dehydrator 2; nitrogen pump 3; circulation pump 4; cooler 5; gas-liquid separator 6; wastewater tank 7; wastewater outlet 7-1; circulation fan 8; heater 9; thermal oil inlet 9-1; thermal oil outlet 9-2; silica gel dryer 10. DETAILED DESCRIPTION
[0017] Specific embodiment 1: Please refer to Figure 1-Figure 2The utility model relates to a production device for online dehydration of sodium ion electrolyte molecular sieves, comprising a solvent tank 1, a dehydrator 2, two nitrogen pumps 3, a circulating pump 4, a cooler 5, a gas-liquid separator 6, a wastewater tank 7, a circulating fan 8, a heater 9 and a silica gel dryer 10. The solvent tank 1, the dehydrator 2, the cooler 5, the gas-liquid separator 6, the circulating fan 8, the heater 9 and the silica gel dryer 10 are connected in sequence through pipelines. Any nitrogen pump 3 is connected to the dehydrator 2 through a pipeline, and the other nitrogen pump 3 is connected to the gas-liquid separator 6 through a pipeline. Both ends of the circulating pump 4 are respectively connected to the solvent tank 1 and the dehydrator 2 through pipelines. The wastewater tank 7 is separately connected to the cooler 5 and the gas-liquid separator 6 through pipelines. The silica gel dryer 10 is connected to the dehydrator 2 through another pipeline. The dehydrator 2 is provided with a molecular sieve 2-1 for adsorption.
[0018] The solvent in the solvent tank 1 reaches the dehydrator 2 for adsorption, and the adsorbed solvent flows back to the solvent tank 1 through the circulation pump 4; when the molecular sieve 2-1 is saturated with adsorption, the circulation pump 4 is stopped, and nitrogen is filled into the dehydrator 2 through the nitrogen pump 3, and the solvent in the molecular sieve 2-1 is pressed back into the solvent tank 1, and then the nitrogen pump 3 and the valve connecting the solvent tank 1 and the dehydrator 2 are closed. Another nitrogen pump 3 is opened to fill nitrogen into the gas-liquid separator 6 to the required pressure, and then the nitrogen pump 3 is closed, and the heater 9, the circulation fan 8 and the cooler 5 are turned on, so that the nitrogen passes through the circulation fan 8 and the heater 9 in sequence to complete uniform heating and then reaches the silicon The glue dryer 10 is used for drying, and the heated nitrogen after drying flows into the dehydrator 2 to vaporize the water in the dehydrator 2. The nitrogen with water vapor enters the cooler 5 for cooling, and the water vapor is liquefied into waste water in the gas-liquid separator 6. The cooled nitrogen re-enters the circulation fan 8, so that the nitrogen circulates between the dehydrator 2 and the silica gel dryer 10. After the dehydration work is completed, the heater 9 and the circulation fan 8 are turned off, the connection between the dehydrator 2 and the cooler 5 and the silica gel dryer 10 is disconnected, the circulation pump 4 and the valve connecting the solvent tank 1 and the dehydrator 2 are opened, and the molecular sieve 2-1 continues to perform the dehydration work.
[0019] When the wastewater in the gas-liquid separator 6 reaches the storage upper limit, the valve between the cooler 5, the gas-liquid separator 6 and the wastewater tank 7 is opened to cool the residual water vapor in the gas-liquid separator 6, and the cooled wastewater is discharged through the wastewater tank 7. The dehydration of the molecular sieve 2-1 in the dehydrator 2 can be completed without taking out the molecular sieve 2-1. The dehydration treatment effect is high, and the molecular sieve 2-1 is prevented from continuing to absorb moisture in the air after being taken out, thereby reducing the dehydration cost.
[0020] In a further embodiment, Figure 1As shown, the heater 9 is provided with a heat transfer oil inlet 9-1 and a heat transfer oil outlet 9-2. Heat transfer oil is added into the heater 9 through the heat transfer oil inlet 9-1 and discharged from the heat transfer oil outlet 9-2 to circulate and conduct heat efficiently, provide stable temperature control, and make the heating process more reliable and accurate; the waste water tank 7 is provided with a waste water outlet 7-1 for regular drainage and periodic waste treatment, thereby reducing costs and pollution.
[0021] In a further embodiment, Figure 1 As shown, when the nitrogen pump 3 is turned on to charge nitrogen into the gas-liquid separator 6, the pressure inside the device is 2KPa, which improves the dehydration efficiency and allows water vapor to be fully discharged from the molecular sieve 2-1.
[0022] In a further embodiment, Figure 1 As shown, the heater 9 is turned on to control the outlet gas temperature to 175° C.-185° C. to ensure that the nitrogen is fully heated.
[0023] In a further embodiment, Figure 1 As shown, during dehydration, the circulating fan 8 circulates continuously for 2 hours to ensure sufficient nitrogen circulation and improve dehydration efficiency.
[0024] In a further embodiment, Figure 1 As shown, when the difference between the outlet temperature of the dehydrator 2 and the temperature inside the dehydrator is less than 3°C, it means that the dehydration is sufficient, the dehydration is ended, the heat transfer oil inlet 9-1 of the heater 9 is closed, and the circulating cooling is continued. When the temperature inside the dehydrator 2 is less than 40°C, the nitrogen pump 3 and the circulating fan 8 are turned off, the circulating pump 4 is turned on, and the molecular sieve 2-1 is put into use again.
Claims
1. A production device for online dehydration of sodium ion electrolyte molecular sieve, characterized by: The invention comprises a solvent tank (1), a dehydrator (2), two nitrogen pumps (3), a circulation pump (4), a cooler (5), a gas-liquid separator (6), a heater (9) and a silica gel dryer (10). The solvent tank (1), the dehydrator (2), the cooler (5), the gas-liquid separator (6), the heater (9) and the silica gel dryer (10) are connected in sequence through pipelines. Any nitrogen pump (3) is connected to the dehydrator (2) through a pipeline, and the other nitrogen pump (3) is connected to the gas-liquid separator (6) through a pipeline. Both ends of the circulation pump (4) are respectively connected to the solvent tank (1) and the dehydrator (2) through pipelines. The silica gel dryer (10) is connected to the dehydrator (2) through another pipeline. A molecular sieve (2-1) for adsorption is provided in the dehydrator (2).
2. The production device for online dehydration of sodium ion electrolyte molecular sieve according to claim 1, characterized in that: The heater (9) is provided with a heat transfer oil inlet (9-1) and a heat transfer oil outlet (9-2).
3. The production device for online dehydration of sodium ion electrolyte molecular sieve according to claim 1, characterized in that: A circulating fan (8) is provided between the gas-liquid separator (6) and the heater (9).
4. The production device for online dehydration of sodium ion electrolyte molecular sieve according to claim 1, characterized in that: The system further comprises a waste water tank (7), which is separately connected to the cooler (5) and the gas-liquid separator (6) through pipelines.
5. The production device for online dehydration of sodium ion electrolyte molecular sieve according to claim 4, characterized in that: One end of the wastewater tank (7) is provided with a wastewater outlet (7-1) capable of regular drainage.