Electrolyte filtering device
By designing an electrolyte filtration device and utilizing a combination of a filtration mechanism and a vacuum pump, the problem of difficult removal of graphite impurities in the electrolyte was solved, efficient electrolyte recovery and effective filtration of impurities were achieved, and the quality and production efficiency of metallic lithium were improved.
Patent Information
- Application Number
- CN202422899120.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In the existing technology, graphite electrodes fall into the electrolyte during the electrolysis production process, affecting the quality of metallic lithium and reducing conductivity, and graphite impurities in the electrolyte are difficult to remove.
An electrolyte filtration device was designed, which includes an initial tank, a storage tank, a filtration mechanism and a vacuum pump. The impurities in the electrolyte were filtered through a multi-layer stainless steel filter mesh and stored in the storage tank by utilizing the negative pressure of the filtration mechanism and the vacuum pump, ensuring the recycling of the electrolyte.
The effective recycling of electrolyte and removal of impurities are achieved, which improves the quality of metallic lithium and reduces energy consumption.
Smart Images
Figure CN223453783U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to metal lithium production technical field, concretely is a kind of electrolyte filtering device. BACKGROUND
[0002] Metal lithium is the lightest metal in nature, plus has other excellent performance, therefore widely used in atomic energy, nuclear energy, aerospace, metallurgy, chemical industry, machinery, glass ceramic, air conditioning refrigeration, medicine and health, organic synthesis, new energy, agriculture and numerous fields, has "industrial monosodium glutamate" the appellation, also is the key metal material in 21st century high-tech development.
[0003] Graphite material has the characteristics of corrosion resistance, heat conduction, good conductivity, and is often used as anode material for preparing metal lithium by molten salt electrolysis. In the electrolytic production process, the graphite on the graphite electrode will inevitably fall off during use due to the brittleness of graphite itself. The fallen graphite will enter the electrolyte. If the graphite content in the electrolyte is high, it will not only affect the quality of metal lithium, but also cause the conductivity of the electrolyte to decrease, thereby causing the energy consumption to increase. At the same time, since the melting point of the electrolyte is above 352℃, the electrolyte is in a solid state at room temperature, and the graphite powder in the electrolyte cannot be removed. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide an electrolyte filtering device for recycling electrolyte and removing impurities in the electrolyte.
[0005] The utility model solves the technical problem by adopting the technical scheme of an electrolyte filtering device, which comprises an initial tank and a storage tank. A heating device is arranged inside the initial tank. A filtering mechanism is arranged in the initial tank. An output end of the filtering mechanism is provided with a material pipe. A first joint and a second joint are arranged on the top of the storage tank and communicate with the inner cavity of the storage tank. The material pipe communicates with the first joint. The second joint communicates with the output end of a vacuum pump through a vacuum pipe.
[0006] Further, the filtering mechanism comprises a cylinder with an open lower end and a closed upper end. A plurality of layers of filter screens are arranged in the inner cavity of the cylinder along the axial direction of the cylinder. An output pipe is arranged on the top of the cylinder. The output pipe communicates with the material pipe through a flange plate. A high-temperature sealing gasket is arranged in the flange plate.
[0007] Further, the filter screen is made of stainless steel 315L and has a pore size of 15um.
[0008] Further, an electric heating wire is arranged on the material pipe.
[0009] Further, the intermediate tank is arranged between the storage tank and the vacuum pump, the top of the intermediate tank is provided with a third joint and a fourth joint, the vacuum pipe comprises a first connecting pipe and a second connecting pipe, the first connecting pipe is communicated with the second joint and the third joint, and the second connecting pipe is communicated with the fourth joint and the output end of the vacuum pump.
[0010] Further, the first joint, the second joint, the third joint and the fourth joint are vacuum joints.
[0011] Further, the initial tank is provided with an electronic thermometer.
[0012] The beneficial effects of the utility model are that: through setting the filtering mechanism in the initial tank, the vacuum pump provides power, makes the electrolyte in the initial tank filter through the filtering mechanism, and the filtered electrolyte enters the storage tank through the material pipe to be stored, realizes the recycling of the electrolyte, and removes the impurities in the electrolyte. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the structural schematic diagram of the utility model;
[0014] Figure 2 It is the schematic diagram of the filtering device.
[0015] Sign significance: 1 - initial tank;2 - storage tank;3 - heating device;4 - filtering mechanism;401 - cylinder body;402 - filter screen;403 - output pipe;404 - flange plate;405 - high temperature sealing gasket;5 - material pipe;6 - first joint;7 - second joint;8 - vacuum pump;9 - electric heating wire;10 - intermediate tank;11 - third joint;12 - fourth joint;13 - first connecting pipe;14 - second connecting pipe 15 - electronic thermometer. DETAILED DESCRIPTION
[0016] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.
[0017] As Figures 1-2 shown, the utility model discloses an electrolyte filtering device, including initial tank 1 and storage tank 2, the inside of initial tank 1 is provided with heating device 3, the initial tank 1 is provided with filtering mechanism 4, the output of filtering mechanism 4 is provided with material pipe 5, the top of storage tank 2 is provided with first joint 6 and second joint 7 with storage tank 2 inner chamber intercommunication, material pipe 5 is communicated with first joint 6, and the second joint 7 is communicated with the output end of vacuum pump 8 through vacuum pipe.
[0018] Wherein, the initial tank 1 is an open-end steel tank, the electrolyte level in the initial tank 1 can be clearly observed, which is conducive to the immediate start and stop of the vacuum pump 8; the storage tank 2 is a sealed steel tank for storing the electrolyte filtered by the filtering mechanism 4; the heating device 3 is used to heat the electrolyte in the initial tank 1, and the heating device 3 can be a heating coil, and the power supply device provides power for the heating coil. When the electrolyte in the initial tank 1 needs to be heated, the power supply device supplies power to the heating coil, and the heating coil generates heat to heat the electrolyte to melt the electrolyte. The filtering mechanism 4 is used to filter impurities in the electrolyte, in order to filter the electrolyte in the initial tank 1 cleanly, the filtering mechanism 4 is located at the bottom of the tank body of the initial tank 1; the vacuum pump 8 provides power to form a negative pressure in the storage tank 2 during use, and the negative pressure causes the filtering device to suck the electrolyte in the initial tank 1 and enter the storage tank 2 through the feed pipe 5.
[0019] In order to better filter the impurities in the electrolyte, further, referring to Figure 2 , the filtering mechanism 4 includes a cylinder 401 with an open lower end and a closed upper end, a plurality of filter screens 402 are arranged in the inner cavity of the cylinder 401 along the axial direction of the cylinder 401, an output pipe 403 is arranged at the top of the cylinder 401, the output pipe 403 is in communication with the feed pipe 5 through a flange 404, and a high-temperature sealing gasket 405 is arranged in the flange 404. The filter screen 402 is made of stainless steel 315L and has a pore size of 15um, which can effectively remove impurities in the electrolyte, and the plurality of filter screens 402 can ensure that the impurities are filtered more cleanly. The upper end of the output pipe 403 is fixedly connected with a lower flange, the lower end of the feed pipe 5 is provided with an upper flange, and the upper flange and the lower flange are connected by bolts, so that the flanges of the output pipe 403 and the feed pipe 5 are connected, and the output pipe 403 is in communication with the inner cavity of the cylinder 401. Since the temperature of the electrolyte is high, in order to prevent leakage of the electrolyte, the high-temperature sealing gasket 405 is arranged between the upper flange and the lower flange.
[0020] In order to prevent the electrolyte from solidifying in the feed pipe 5, further, referring to Figure 1 , an electric heating wire 9 is arranged on the feed pipe 5, and the electric heating wire 9 is wound around the feed pipe 5.
[0021] Since the vacuum pump 8 can provide negative pressure, the electrolyte may be sucked into the vacuum pump 8 when the electrolyte enters the storage tank 2, further, referring to Figure 1The storage tank 2 is provided with an intermediate tank 10 between the storage tank 2 and the vacuum pump 8, the top of the intermediate tank 10 is provided with a third joint 11 and a fourth joint 12, the vacuum pipe comprises a first connecting pipe 13 and a second connecting pipe 14, the first connecting pipe 13 is communicated with the second joint 7 and the third joint 11, and the second connecting pipe 14 is communicated with the fourth joint 12 and the output end of the vacuum pump 8. In this way, under the action of the vacuum pump 8, the storage tank 2 can also provide negative pressure, and if the electrolyte enters the first connecting pipe 13, the electrolyte can also be stored in the intermediate tank 10, so that the electrolyte is prevented from entering the vacuum pump 8.
[0022] In order to ensure the sealing, further, the first joint 6, the second joint 7, the third joint 11 and the fourth joint 12 are all vacuum joints.
[0023] In order to be able to know the temperature condition in the initial tank 1 in real time, further, referring to Figure 1 The initial tank 1 is provided with an electronic thermometer 15.
[0024] The embodiments of the specific embodiment are the preferred embodiments of the utility model, and are not limited to the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.
Claims
1. An electrolyte filtering device comprising an initial tank (1) and a storage tank (2), said initial tank (1) being provided internally with heating means (3), characterized in that: The initial tank (1) is provided with a filtering mechanism (4), the output end of the filtering mechanism (4) is provided with a material pipe (5), the top of the storage tank (2) is provided with a first joint (6) and a second joint (7) which are communicated with the inner cavity of the storage tank (2), the material pipe (5) is communicated with the first joint (6), and the second joint (7) is communicated with the output end of a vacuum pump (8) through a vacuum pipe.
2. An electrolyte filter apparatus as claimed in claim 1, wherein: The filtering mechanism (4) comprises a cylinder (401) which is open at the lower end and closed at the upper end, a plurality of filtering screens (402) are arranged in the inner cavity of the cylinder (401) along the axial direction of the cylinder (401), and an output pipe (403) is arranged at the top of the cylinder (401), the output pipe (403) is communicated with the material pipe (5) through a flange (404), and a high-temperature sealing gasket (405) is arranged in the flange (404).
3. An electrolyte filter apparatus as claimed in claim 2, wherein: The filtering screen (402) is made of stainless steel 315L and has a pore size of 15um.
4. An electrolyte filter apparatus as claimed in claim 2, wherein: An electric heating wire (9) is arranged on the material pipe (5).
5. An electrolyte filter as claimed in claim 1, wherein: An intermediate tank (10) is arranged between the storage tank (2) and the vacuum pump (8), the top of the intermediate tank (10) is provided with a third joint (11) and a fourth joint (12), the vacuum pipe comprises a first connecting pipe (13) and a second connecting pipe (14), the first connecting pipe (13) is communicated with the second joint (7) and the third joint (11), and the second connecting pipe (14) is communicated with the fourth joint (12) and the output end of the vacuum pump (8).
6. An electrolyte filter apparatus as claimed in claim 5, characterised in that: The first joint (6), the second joint (7), the third joint (11) and the fourth joint (12) are all vacuum joints.
7. An electrolyte filter apparatus as claimed in claim 1, wherein: An electronic thermometer (15) is arranged in the initial tank (1).