CN217189533U - Multistage filter equipment of preparation high-purity chemicals - Google Patents
Multistage filter equipment of preparation high-purity chemicals Download PDFInfo
- Publication number
- CN217189533U CN217189533U CN202220074085.8U CN202220074085U CN217189533U CN 217189533 U CN217189533 U CN 217189533U CN 202220074085 U CN202220074085 U CN 202220074085U CN 217189533 U CN217189533 U CN 217189533U
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- Prior art keywords
- filter
- secondary filter
- discharge valve
- line
- primary
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- 239000000126 substance Substances 0.000 title claims abstract description 8
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 239000011162 core material Substances 0.000 claims 2
- 239000012535 impurity Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 15
- 239000000463 material Substances 0.000 description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- XMJHPCRAQCTCFT-UHFFFAOYSA-N methyl chloroformate Chemical compound COC(Cl)=O XMJHPCRAQCTCFT-UHFFFAOYSA-N 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000013064 chemical raw material Substances 0.000 description 2
- -1 etc. Chemical class 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A reaction kettle is connected with an inlet of a conveying pump through a line pipeline, an outlet of the conveying pump is connected with a primary filter through a line pipeline, an outlet of the primary filter is respectively connected with an inlet of a secondary filter A and an inlet of a secondary filter B through line pipelines, and outlets of the secondary filter A and the secondary filter B are respectively connected with a product discharge valve through line pipelines. The utility model aims at providing a multistage filter equipment of preparation high purity chemical to high purity DMC in the production process, carries out effectual the getting rid of to some impurity in the DMC.
Description
Technical Field
The utility model belongs to the technical field of chemical production, processing facility equipment, concretely relates to a multistage filter equipment for preparing high purity DMC.
Background
Dimethyl carbonate (DMC) is an organic compound, has a chemical formula of C3H6O3, is a chemical raw material with low toxicity, excellent environmental protection performance and wide application, is an important organic synthesis intermediate, contains functional groups such as carbonyl, methyl, methoxy and the like in a molecular structure, has various reaction properties, and has the characteristics of safe and convenient use, less pollution, easy transportation and the like in production. As a commonly used electrolyte for lithium batteries.
The high-purity dimethyl carbonate is an important chemical raw material, is mainly applied to lithium ion battery electrolyte due to high boiling point, high flash point and high dielectric constant, and is an important solvent of the lithium ion battery electrolyte. The electrolyte is a key material in lithium ion batteries, and is called "blood" of the lithium ion batteries. The performance of the electrolyte depends on the product quality of various solvents in the formula, and the water content, the total alcohol content, the content of metal ions and other impurity components of the high-purity dimethyl carbonate product directly influence the performance of the electrolyte product and further influence the indexes of the battery. The general DMC product contains methanol, water, various metal ions, chlorine, acid, Methyl Chloroformate (MCF), various silanes, etc., and salts such as sodium chloride, etc., which are generated by adding other reagents, are insoluble in DMC, and can be filtered out by filtration. High precision filters are therefore one of the important devices in the electronic grade DMC plant process.
Disclosure of Invention
The utility model aims at providing a multistage filter equipment of preparation high-purity chemicals to high-purity DMC in the production process, carry out effectual the getting rid of to the part impurity in the DMC.
The utility model provides a multistage filter equipment of preparation high-purity chemical, reation kettle is through line pipeline and delivery pump access connection, and the delivery pump export is connected with the primary filter through line pipeline, and the primary filter export is through line pipeline respectively with secondary filter A, secondary filter B access connection, and secondary filter A, secondary filter B export are connected with the product bleeder valve through line pipeline respectively.
The primary filter is connected with the primary filter discharge valve, the secondary filter A is connected with the secondary filter A discharge valve, the secondary filter B is connected with the secondary filter B discharge valve, and the primary filter discharge valve, the secondary filter A discharge valve and the secondary filter B discharge valve are all connected with the residual liquid discharge valve through line pipelines.
The inlet of the primary filter is provided with a primary filter feeding pressure gauge, the outlet of the primary filter is provided with a primary filter discharging pressure gauge, the outlet of the secondary filter A is provided with a secondary filter A discharging pressure gauge, and the outlet of the secondary filter B is provided with a secondary filter B discharging pressure gauge.
The outlet of the conveying pump is connected with a secondary line valve of the primary filter through a line pipeline, and the secondary line valve of the primary filter is connected with the top of the reaction kettle through a line pipeline.
The discharge valve of the secondary filter A and the discharge valve of the secondary filter B are connected with a material returning valve through a line pipeline, and the material returning valve is connected with the top of the reaction kettle through a line pipeline.
The filter elements are arranged in the primary filter, the secondary filter A and the secondary filter B.
The filter precision of the filter element is as follows: 0.1 μm to 10 μm.
Compared with the prior art, the utility model discloses following technological effect has:
the utility model can effectively remove part of impurities in the DMC in the production process of the high-purity DMC; the utility model adopts the multi-stage filtration process, and can switch the secondary filter which is easy to be blocked on line according to the pressure difference, without influencing the production; the utility model discloses a secondary filter can online backwash, and the flexible operation is convenient.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. reaction kettle, 2, a delivery pump, 3, a primary filter, 4, a secondary filter A, 5, a secondary filter B, 6, a primary filter feed valve, 7, a secondary filter A feed valve, 8, a secondary filter B feed valve, 9, a secondary filter secondary line valve, 10, a secondary filter A discharge valve, 11, a secondary filter B discharge valve, 12, a primary filter secondary line valve, 13, a material return valve, 14, a primary filter feed pressure gauge, 15 a primary filter discharge pressure gauge, 16, a secondary filter A discharge pressure gauge, 17, a secondary filter B discharge pressure gauge, 18, a primary filter discharge valve, 19, a secondary filter A discharge valve, 20, a secondary filter B discharge valve, 21, a product discharge valve, 22, and a residual liquid discharge valve.
Detailed Description
As shown in figure 1, the multistage filtering device for preparing high-purity chemicals is characterized in that the bottom of a reaction kettle 1 is connected with an inlet of a delivery pump 2 through a line pipeline, an outlet of the delivery pump 2 is connected with a primary filter 3 through a line pipeline, an outlet of the primary filter 3 is respectively connected with inlets of a secondary filter A4 and a secondary filter B5 through line pipelines, and outlets of the secondary filter A4 and the secondary filter B5 are respectively connected with a product discharge valve 21 through line pipelines.
The bottoms of the first-stage filter 3, the second-stage filter A4 and the second-stage filter B5 are respectively provided with a first-stage filter discharge valve 18, a second-stage filter A discharge valve 19 and a second-stage filter B discharge valve 20; the three discharge valves are connected to a raffinate discharge valve 22 by line piping.
The inlet of the primary filter 3 is provided with a primary filter feeding pressure gauge 14, the outlet of the primary filter 3 is provided with a primary filter discharging pressure gauge 15, the outlet of the secondary filter A4 is provided with a secondary filter A discharging pressure gauge 16, and the outlet of the secondary filter B4 is provided with a secondary filter B discharging pressure gauge 17.
The outlet of the delivery pump 2 is connected with a primary filter secondary line valve 12 through a line pipeline, and the primary filter secondary line valve 12 is connected with the top of the reaction kettle 1 through a line pipeline.
The discharge valve 10 of the secondary filter A and the discharge valve 11 of the secondary filter B are connected with a material returning valve 13 through a pipeline, and the material returning valve 13 is connected with the top of the reaction kettle 1 through a pipeline.
The filter elements are arranged in the primary filter 3, the secondary filter A4 and the secondary filter B5, the filter elements are made of materials including but not limited to metal, ceramic, silicon carbide, graphite and the like, and the filtering precision can be selected as follows: 0.1 μm to 10 μm.
Each line pipeline is provided with a valve for control.
The utility model discloses when using, DMC and methyl alcohol, sodium methoxide etc. are through stirring compulsory mixture in reation kettle, and impurities such as Methyl Chloroformate (MCF) in the DMC react with sodium methoxide and generate sodium chloride and dimethyl carbonate (DMC), and inorganic salt is insoluble in organic solvent. The materials are conveyed to a first-stage filter 3 through a conveying pump 2 for coarse filtration, solid impurities with the particle size of more than 3 microns are filtered out, then the materials enter a second-stage filter for fine filtration, wherein the number of the second-stage filter is 2, the two filters are opened and prepared at one time during normal operation, and DMC solution after the fine filtration enters a product storage tank. Because the primary filter is a coarse filter, the operation period is generally longer, and if the pressure difference between the primary filter feeding pressure gauge 14 and the primary filter discharging pressure gauge 15 is higher than a specified index, the primary filter needs to be flushed.
When the flushing is carried out, the feed valve 6 of the primary filter, the feed valve 7 of the secondary filter A, the feed valve 8 of the secondary filter B, the material return valve 13 and the product discharge valve 21 are closed, the secondary line valve 12 of the primary filter, the secondary line valve 9 of the secondary filter, the discharge valve 18 of the primary filter and the discharge valve 22 of the residual liquid are opened, the flushing residual liquid is discharged to a residual liquid collecting tank, and the operation is repeated for a plurality of times. Because the secondary filter is a fine filter, mainly filters impurities with the particle size of more than 0.1 mu m and is easy to block, if the pressure difference between the discharge pressure gauge 15 of the primary filter and the discharge pressure gauge 16 of the A secondary filter is higher than a specified index, the secondary filter needs to be switched to another filter, and the specific operation is as follows: open secondary filter B feed valve 8, secondary filter B bleeder valve 11, close secondary filter A feed valve 7, secondary filter A bleeder valve 10, can switch secondary filter A to secondary filter B, do not influence production. If the secondary filter A needs to be flushed, the operation is as follows: closing a feed valve 7 of the secondary filter A, a feed valve 8 of the secondary filter B, a material returning valve 13 and a product discharge valve 21, opening a discharge valve 10 of the secondary filter A, a discharge valve 19 of the secondary filter A and a residual liquid discharge valve 22, discharging the flushing residual liquid to a residual liquid collecting tank, and repeatedly backwashing on line for multiple times.
Claims (5)
1. A multistage filtering device for preparing high-purity chemicals is characterized in that a reaction kettle (1) is connected with an inlet of a delivery pump (2) through a line pipeline, an outlet of the delivery pump (2) is connected with a primary filter (3) through a line pipeline, an outlet of the primary filter (3) is respectively connected with inlets of a secondary filter A (4) and a secondary filter B (5) through line pipelines, and outlets of the secondary filter A (4) and the secondary filter B (5) are respectively connected with a product discharge valve (21) through line pipelines;
the primary filter (3) is connected with a discharge valve (18) of the primary filter, the secondary filter A (4) is connected with a discharge valve (19) of the secondary filter A, the secondary filter B (5) is connected with a discharge valve (20) of the secondary filter B, and the discharge valve (18) of the primary filter, the discharge valve (19) of the secondary filter A and the discharge valve (20) of the secondary filter B are all connected with a residual liquid discharge valve (22) through line pipelines;
a primary filter feeding pressure gauge (14) is arranged at the inlet of the primary filter (3), a primary filter discharging pressure gauge (15) is arranged at the outlet of the primary filter (3), a secondary filter A discharging pressure gauge (16) is arranged at the outlet of the secondary filter A (4), and a secondary filter B discharging pressure gauge (17) is arranged at the outlet of the secondary filter B (5).
2. The apparatus according to claim 1, wherein the outlet of the transfer pump (2) is connected with a secondary line valve (12) of the primary filter through a line pipeline, and the secondary line valve (12) of the primary filter is connected with the top of the reaction kettle (1) through a line pipeline.
3. The device according to claim 1, characterized in that the secondary filter A discharge valve (10) and the secondary filter B discharge valve (11) are connected with a return valve (13) through a pipeline, and the return valve (13) is connected with the top of the reaction kettle (1) through a pipeline.
4. The device according to claim 1, characterized in that the primary filter (3), the secondary filter A (4) and the secondary filter B (5) are internally provided with filter elements.
5. The device of claim 4, wherein the filter core material includes but is not limited to metal, ceramic, silicon carbide, graphite, and the filter precision of the filter core is selectable: 0.1 μm to 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220074085.8U CN217189533U (en) | 2022-01-12 | 2022-01-12 | Multistage filter equipment of preparation high-purity chemicals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220074085.8U CN217189533U (en) | 2022-01-12 | 2022-01-12 | Multistage filter equipment of preparation high-purity chemicals |
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| Publication Number | Publication Date |
|---|---|
| CN217189533U true CN217189533U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220074085.8U Active CN217189533U (en) | 2022-01-12 | 2022-01-12 | Multistage filter equipment of preparation high-purity chemicals |
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| CN (1) | CN217189533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049965A (en) * | 2023-06-28 | 2023-11-14 | 福建德尔科技股份有限公司 | Efficient recycling method for solvent in lithium salt additive production process |
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2022
- 2022-01-12 CN CN202220074085.8U patent/CN217189533U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049965A (en) * | 2023-06-28 | 2023-11-14 | 福建德尔科技股份有限公司 | Efficient recycling method for solvent in lithium salt additive production process |
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