Electrolyte raw material solvent filtering device
By designing the electrolyte raw material solvent filtration device, using the combined structure of the molecular sieve column and the material preparation filter, combined with steam or low-pressure hot water heat tracing, the problem of low efficiency of the traditional filtration method is solved, the yield and quality of the electrolyte are improved, and the High cleanliness and anti-corrosion requirements for the production of lithium-ion battery electrolyte.
Patent Information
- Application Number
- CN202323586515.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-27
AI Technical Summary
Traditional filtration methods are inefficient in the production process of lithium-ion battery electrolytes, resulting in poor product output and quality, and high requirements for equipment cleanliness and anti-corrosion, making it difficult to effectively control trace impurities and moisture.
An electrolyte raw material solvent filtration device is designed, including the first and second molecular sieve columns, a material preparation filter and a storage tank. The raw material solvent is poured into the molecular sieve column through the feed pipeline to adsorb impurities and moisture, and then passes through the main transport. The material pipeline is fed into the material preparation filter and removed again, and finally set aside in the material preparation storage tank. Steam or low-pressure hot water is used to heat tracing at the molecular sieve column and storage tank to improve filtration efficiency.
It effectively reduces the filtration time of raw material solvents, improves the yield and quality of the electrolyte, and meets the high requirements for cleanliness and anti-corrosion in electrolyte production.
Smart Images
Figure CN222266424U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electrolyte raw material filtering device, in particular to an electrolyte raw material solvent filtering device. Background Art
[0002] In the production process of lithium-ion battery electrolyte, the requirements for production equipment are extremely high. Ordinary filtering equipment will cause impurities and excessive moisture content. This requires high cleanliness and equipment anti-corrosion requirements in all links of electrolyte production, and strict requirements on equipment materials. This filtering device is a key link in the production process to ensure the control of trace impurities and moisture content in the raw material solvent, and the length of filtration is also related to the output of electrolyte, which directly affects the economic benefits. Traditional filtering methods will lead to low product production efficiency, which not only affects the overall output, but also affects the quality of the product. Utility Model Content
[0003] The purpose of the utility model is to provide an electrolyte raw material solvent filtering device to address the above-mentioned defects in the prior art, which effectively filters trace impurities and moisture in the electrolyte raw material solvent, reduces the filtering time of the raw material solvent, and improves the electrolyte yield and quality.
[0004] The utility model discloses an electrolyte raw material solvent filtering device, and its technical scheme is as follows: comprising an electrolyte raw material feed end (1), a first molecular sieve column (2), a second molecular sieve column (3), a stock filter (4), a stock storage tank (5), a main material delivery pipeline (8), a recycling pipeline (10), a stock output pump (11), and a stock output pipeline (12), wherein the electrolyte raw material feed end (1) is connected to the lower ends of the first molecular sieve column (2) and the second molecular sieve column (3) respectively through a feed pipeline (19), and the upper end of the first molecular sieve column (2) is connected to the lower ends of the first molecular sieve column (2) and the second molecular sieve column (3) through the main material delivery pipeline (8). ) is connected to the top of the preparation filter (4), and the upper end of the second molecular sieve column (3) is connected to the main feed pipeline (8) through a pipeline; the lower end of the preparation filter (4) is connected to the upper part of the preparation storage tank (5) through a pipeline, and the lower end of the preparation storage tank (5) is discharged through the preparation output pipeline (12) and the preparation output pump (11); the rear section of the preparation output pipeline (12) is connected to the recycling pipeline (10) through the recycling pipeline control valve (10.1), and the other end of the recycling pipeline (10) is connected to the feed pipeline (19) of the electrolyte raw material feed end (1).
[0005] Preferably, a sandwich wall cavity (2.2) is provided on the outside of the first molecular sieve column (2), the lower side of the sandwich wall cavity (2.2) is connected to the first hot water inlet end (6) via a pipeline, and the upper side of the sandwich wall cavity (2.2) is connected to the first hot water outlet end (7) via a pipeline.
[0006] Preferably, the top of the first molecular sieve column (2) is provided with a first nitrogen inlet end (17) and a first nitrogen vent end (18), and the top of the second molecular sieve column (3) is provided with a second nitrogen inlet end (15) and a second vent end (16).
[0007] Preferably, the top of the above-mentioned preparation storage tank (5) is provided with a nitrogen inlet end (13) and a vent end (14), the outer wall of the preparation storage tank (5) is provided with a sandwich layer, the lower end is provided with a hot water inlet, and the upper end is connected to a hot water outlet.
[0008] Preferably, the middle section of the feed pipeline (19) is connected to the secondary feed pipeline (9) via a secondary feed pipeline control valve (9.1), and the other end of the secondary feed pipeline (9) is connected to the main feed pipeline (8).
[0009] Preferably, the outer wall of the above-mentioned stock preparation output pump (11) is provided with a sandwich layer, one end of the sandwich layer is provided with a hot water inlet, and the other end is connected to the hot water outlet, and the stock preparation output pipeline (12) connected to the outlet of the stock preparation output pump (11) is provided with a stock preparation output pipeline control valve (12.1).
[0010] Preferably, a first feed control valve (2.1) is provided on the feed line (19) at the lower end of the first molecular sieve column (2), and a second feed control valve (3.1) is provided on the feed line (19) at the lower end of the second molecular sieve column (3).
[0011] In addition, it should be noted that the organic solvent dehydration molecular sieves provided in the first molecular sieve column and the second molecular sieve column are usually zeolite molecular sieves, which may be a mesh structure composed of silicon-oxygen tetrahedrons or aluminum-oxygen tetrahedrons, and are prior arts well known to those skilled in the art.
[0012] The beneficial effect of the utility model is as follows: the utility model injects the electrolyte raw material solvent from the electrolyte raw material feed end through the feed pipeline into the first molecular sieve column and the second molecular sieve column, the electrolyte raw material solvent is first adsorbed in the first molecular sieve column and the second molecular sieve column to remove possible trace impurities and moisture, and then is sent to the preparation filter through the main feed pipeline for impurity removal again, and then is injected into the preparation storage tank for standby use. In order to ensure the permeability of the liquid material and sufficient rear-end preparation, the outer walls of the preparation storage tank and the first molecular sieve column and the second molecular sieve column are all provided with a wall cavity, and steam or low-pressure hot water is introduced for heating, which effectively filters the trace impurities and moisture in the electrolyte raw material solvent, reduces the filtering time of the raw material solvent, and improves the electrolyte yield and quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model;
[0014] Figure 2It is a structural schematic diagram of embodiment 2 of the utility model;
[0015] In the figure above: electrolyte raw material feed end 1, first molecular sieve column 2, second molecular sieve column 3, preparation filter 4, preparation storage tank 5, first hot water inlet end 6, first hot water outlet end 7, main feed pipeline 8, auxiliary feed pipeline 9, refining pipeline 10, preparation output pump 11, preparation output pipeline 12, nitrogen inlet end 13, vent end 14, second nitrogen inlet end 15, second vent end 16, first nitrogen inlet end 17, first nitrogen vent end 18, feed pipeline 19, first feed control valve 2.1, sandwich wall cavity 2.2, second feed control valve 3.1, auxiliary feed pipeline control valve 9.1, refining pipeline control valve 10.1, preparation output pipeline control valve 12.1. DETAILED DESCRIPTION
[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0017] Example 1, reference Figure 1 The utility model mentions an electrolyte raw material solvent filtering device, comprising an electrolyte raw material feed end 1, a first molecular sieve column 2, a second molecular sieve column 3, a preparation filter 4, a preparation storage tank 5, a main feed pipeline 8, a refining pipeline 10, a preparation output pump 11, and a preparation output pipeline 12. The electrolyte raw material feed end 1 is connected to the lower ends of the first molecular sieve column 2 and the second molecular sieve column 3 through a feed pipeline 19, and the upper end of the first molecular sieve column 2 is connected to the main feed pipeline 8. At the top of the preparation filter 4, the upper end of the second molecular sieve column 3 is connected to the main feed pipeline 8 through a pipeline; the lower end of the preparation filter 4 is connected to the upper part of the preparation storage tank 5 through a pipeline, and the lower end of the preparation storage tank 5 is discharged through the preparation output pipeline 12 and the preparation output pump 11; the rear section of the preparation output pipeline 12 is connected to the recycling pipeline 10 through the recycling pipeline control valve 10.1, and the other end of the recycling pipeline 10 is connected to the feed pipeline 19 of the electrolyte raw material feed end 1.
[0018] Among them, the outer side of the above-mentioned first molecular sieve column 2 is provided with a sandwich wall cavity 2.2, the lower side of the sandwich wall cavity 2.2 is connected to the first hot water inlet end 6 through a pipeline, and the upper side of the sandwich wall cavity 2.2 is connected to the first hot water outlet end 7 through a pipeline. In order to ensure the permeability of the liquid material and sufficient back-end mixing, steam or low-pressure hot water is used for heating at the liquid raw material preparation tank and the molecular sieve.
[0019] A first nitrogen inlet port 17 and a first nitrogen vent port 18 are provided at the top of the first molecular sieve column 2, and a second nitrogen inlet port 15 and a second vent port 16 are provided at the top of the second molecular sieve column 3. The nitrogen inlet and outlet can be controlled by a control valve to play a protective role.
[0020] In addition, a nitrogen inlet 13 and a venting end 14 are provided at the top of the preparation storage tank 5, and the outer wall of the preparation storage tank 5 is provided with a sandwich layer, a hot water inlet is provided at the lower end, and a hot water outlet is connected to the upper end. In order to ensure the permeability of the liquid material and sufficient rear-end mixing, steam or low-pressure hot water is used for heating the liquid raw material preparation tank and the molecular sieve.
[0021] Among them, the outer wall of the preparation output pump 11 is provided with a sandwich layer, one end of the sandwich layer is provided with a hot water inlet, and the other end is connected to the hot water outlet. The preparation output pipeline 12 connected to the outlet of the preparation output pump 11 is provided with a preparation output pipeline control valve 12.1. In order to ensure the permeability of the liquid material and sufficient back-end allocation, steam or low-pressure hot water is used for heating at the liquid raw material preparation tank and the molecular sieve.
[0022] In addition, a first feed control valve 2.1 is provided on the feed pipeline 19 at the lower end of the first molecular sieve column 2, and a second feed control valve 3.1 is provided on the feed pipeline 19 at the lower end of the second molecular sieve column 3.
[0023] When the utility model is used, according to production needs, the electrolyte raw material solvent is pumped from the electrolyte raw material feeding end 1 through the feeding pipeline 19 into the first molecular sieve column 2 and the second molecular sieve column 3 by controlling the first feeding control valve 2.1 and the second feeding control valve 3.1. The electrolyte raw material solvent is adsorbed in the first molecular sieve column 2 and the second molecular sieve column 3 to remove possible trace impurities and moisture, and then sent to the preparation filter 4 through the main feeding pipeline 8 for further impurity removal, and then pumped into the preparation storage tank 5 for standby use. In order to ensure the permeability of the liquid material and sufficient back-end preparation, steam or low-pressure hot water is used for heating in the preparation storage tank 5 and the first molecular sieve column 2 and the second molecular sieve column 3.
[0024] Embodiment 2, the utility model mentioned an electrolyte raw material solvent filtering device, comprising an electrolyte raw material feed end 1, a first molecular sieve column 2, a second molecular sieve column 3, a preparation filter 4, a preparation storage tank 5, a main feed pipeline 8, a refining pipeline 10, a preparation output pump 11, and a preparation output pipeline 12, wherein the electrolyte raw material feed end 1 is connected to the lower ends of the first molecular sieve column 2 and the second molecular sieve column 3 through a feed pipeline 19, and the upper end of the first molecular sieve column 2 is connected to the main feed pipeline 8 through a main feed pipeline 8. Connected to the top of the preparation filter 4, the upper end of the second molecular sieve column 3 is connected to the main feed pipeline 8 through a pipeline; the lower end of the preparation filter 4 is connected to the upper part of the preparation storage tank 5 through a pipeline, and the lower end of the preparation storage tank 5 is discharged through the preparation output pipeline 12 and the preparation output pump 11; the rear section of the preparation output pipeline 12 is connected to the recycling pipeline 10 through the recycling pipeline control valve 10.1, and the other end of the recycling pipeline 10 is connected to the feed pipeline 19 of the electrolyte raw material feed end 1.
[0025] The difference from Example 1 is:
[0026] The middle section of the feed pipeline 19 mentioned in this embodiment is connected to the auxiliary feed pipeline 9 through the auxiliary feed pipeline control valve 9.1, and the other end of the auxiliary feed pipeline 9 is connected to the main feed pipeline 8, so that the electrolyte raw material solvent can be more flexibly regulated to enter the first molecular sieve column 2, the second molecular sieve column 3 or directly enter the preparation filter 4 according to the on-site conditions.
[0027] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent transformation based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.
Claims
1. An electrolyte raw material solvent filtering device, characterized in that: Including electrolyte A raw material feed end (1), a first molecular sieve column (2), a second molecular sieve column (3), a stock filter (4), a stock storage tank (5), a main feed pipeline (8), a refining pipeline (10), a stock output pump (11), and a stock output pipeline (12); the electrolyte raw material feed end (1) is connected to the lower ends of the first molecular sieve column (2) and the second molecular sieve column (3) through a feed pipeline (19), the upper end of the first molecular sieve column (2) is connected to the top of the stock filter (4) through the main feed pipeline (8), and the electrolyte raw material feed end (1) is connected to the lower ends of the first molecular sieve column (2) and the second molecular sieve column (3) through a feed pipeline (19). The upper end of the second molecular sieve column (3) is connected to the main feed pipeline (8) through a pipeline; the lower end of the preparation filter (4) is connected to the upper part of the preparation storage tank (5) through a pipeline, and the lower end of the preparation storage tank (5) is discharged through the preparation output pipeline (12) and the preparation output pump (11); the rear section of the preparation output pipeline (12) is connected to the recycling pipeline (10) through the recycling pipeline control valve (10.1), and the other end of the recycling pipeline (10) is connected to the feed pipeline (19) of the electrolyte raw material feed end (1).
2. The electrolyte raw material solvent filtering device according to claim 1, characterized in that: A sandwich wall cavity (2.2) is provided on the outside of the first molecular sieve column (2), the lower side of the sandwich wall cavity (2.2) is connected to a first hot water inlet end (6) via a pipeline, and the upper side of the sandwich wall cavity (2.2) is connected to a first hot water outlet end (7) via a pipeline.
3. The electrolyte raw material solvent filtering device according to claim 2, characterized in that: The top of the first molecular sieve column (2) is provided with a first nitrogen inlet end (17) and a first nitrogen vent end (18), and the top of the second molecular sieve column (3) is provided with a second nitrogen inlet end (15) and a second vent end (16).
4. The electrolyte raw material solvent filtering device according to claim 1, characterized in that: The top of the preparation tank (5) is provided with a nitrogen inlet end (13) and a vent end (14); the outer wall of the preparation tank (5) is provided with a sandwich layer; the lower end is provided with a hot water inlet; and the upper end is connected to a hot water outlet.
5. An electrolyte raw material solvent filtering device according to claim 1, 2, 3 or 4, characterized in that: The middle section of the feed pipeline (19) is connected to the auxiliary feed pipeline (9) via an auxiliary feed pipeline control valve (9.1), and the other end of the auxiliary feed pipeline (9) is connected to the main feed pipeline (8).
6. The electrolyte raw material solvent filtering device according to claim 5, characterized in that: The outer wall of the stock preparation output pump (11) is provided with a sandwich layer, one end of the sandwich layer is provided with a hot water inlet, and the other end is connected to a hot water outlet. A stock preparation output pipeline (12) connected to the outlet of the stock preparation output pump (11) is provided with a stock preparation output pipeline control valve (12.1).
7. The electrolyte raw material solvent filtering device according to claim 5, characterized in that: A first feed control valve (2.1) is provided on the feed pipeline (19) at the lower end of the first molecular sieve column (2), and a second feed control valve (3.1) is provided on the feed pipeline (19) at the lower end of the second molecular sieve column (3).