CN221131340U - Device for refining dilute sulfuric acid and ternary precursor preparation system - Google Patents
Device for refining dilute sulfuric acid and ternary precursor preparation system Download PDFInfo
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- CN221131340U CN221131340U CN202322185191.0U CN202322185191U CN221131340U CN 221131340 U CN221131340 U CN 221131340U CN 202322185191 U CN202322185191 U CN 202322185191U CN 221131340 U CN221131340 U CN 221131340U
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- sulfuric acid
- dilute sulfuric
- refining
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 192
- 239000002243 precursor Substances 0.000 title claims abstract description 38
- 238000007670 refining Methods 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000010790 dilution Methods 0.000 claims abstract description 31
- 239000012895 dilution Substances 0.000 claims abstract description 31
- 210000003298 dental enamel Anatomy 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 24
- 238000001914 filtration Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000004065 wastewater treatment Methods 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 25
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000007865 diluting Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007774 positive electrode material Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- SEVNKUSLDMZOTL-UHFFFAOYSA-H cobalt(2+);manganese(2+);nickel(2+);hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mn+2].[Co+2].[Ni+2] SEVNKUSLDMZOTL-UHFFFAOYSA-H 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003113 dilution method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model relates to the technical field of preparation of ternary precursors. An apparatus for refining dilute sulfuric acid and a ternary precursor preparation system are disclosed. The disclosed device for refining dilute sulfuric acid comprises an enamel dilution kettle, a pipeline demagnetizer and a dilute sulfuric acid storage tank which are sequentially communicated. The disclosed ternary precursor preparation system comprises the device for refining dilute sulfuric acid. The diluted sulfuric acid obtained by dilution of the device for refining the diluted sulfuric acid has low impurity content, and can ensure the safety of the diluted sulfuric acid when being applied to preparing ternary precursors.
Description
Technical Field
The utility model relates to the technical field of precursor preparation, in particular to a device for refining dilute sulfuric acid and a ternary precursor preparation system.
Background
The existing lithium ion battery has the advantages of high specific capacity, long cycle life, low self-discharge rate, no memory effect, environmental friendliness and the like, occupies a large market share in the field of wide portable electronic equipment, and is recognized as the power battery for the electric vehicle with the most development potential. The ternary nickel-cobalt-manganese positive electrode material is an important positive electrode material of a lithium ion battery, has the important advantages of better performance than lithium cobaltate, far lower cost than lithium cobaltate, far higher energy density than lithium iron phosphate and the like, and is becoming a main stream positive electrode material of an automobile power battery gradually.
In the preparation process of the positive electrode material, the preparation process of the precursor accounts for 60 percent, and the advantages and disadvantages of the precursor directly influence the performance of the positive electrode material. The general ternary positive electrode material is formed by mixing secondary spherical particles formed by agglomeration of fine crystal grains of nickel cobalt manganese hydroxide with lithium hydroxide and calcining. At present, a coprecipitation method is mainly adopted for producing ternary precursors, namely nickel salt, cobalt salt, manganese salt or aluminum salt is prepared into a salt solution according to a certain proportion, cobalt nickel manganese/aluminum hydroxide precipitate is formed under the existence of alkali liquor and complexing agent, and qualified products are obtained through the steps of centrifugal washing, slurrying, drying and the like.
In the production of ternary precursor materials, the waste water in the production process mainly comprises mother liquor and washing water generated in the synthesis reaction, ageing and washing sections, and the waste water contains pollution factors such as ammonia nitrogen, alkali, heavy metals (nickel, cobalt, manganese) and the like. Since the ternary wastewater is alkaline, a large amount of dilute sulfuric acid is required to be used for adjustment in the ternary wastewater treatment process, and the dilute sulfuric acid is also required to be used for regeneration and other operations in the precursor production process. The cost is saved, the continuous and stable operation of production is ensured, the concentrated sulfuric acid is purchased, and the dilute sulfuric acid with the required use concentration is prepared according to the requirement. The precursor quality is related to the safety of the whole lithium battery, so that the precursor quality has strict requirements on raw materials and auxiliary materials used in the production process of the lithium battery. In order to meet the demands, the most advanced reagent concentrated sulfuric acid is adopted for dilution to prepare dilute sulfuric acid.
In view of this, the present application has been made.
Disclosure of utility model
The utility model aims to provide a device for refining dilute sulfuric acid and a ternary precursor preparation system.
Embodiments of the present utility model are implemented as follows:
In a first aspect, the utility model provides a device for refining dilute sulfuric acid, comprising an enamel dilution kettle, a pipeline demagnetizer and a dilute sulfuric acid storage tank which are sequentially communicated.
In an alternative embodiment, the device for refining dilute sulfuric acid further comprises a filtering system, wherein the filtering system is arranged between the enamel dilution tank and the pipeline demagnetizer, and the enamel dilution tank, the filtering system, the pipeline demagnetizer and the dilute sulfuric acid storage tank are sequentially communicated through pipelines.
In an alternative embodiment, the filtration system comprises two precision filters in series.
In an alternative embodiment, the two precision filters are a primary filter with a cartridge precision of 50-100 μm and a secondary filter with a cartridge precision of 0.5-1 μm, respectively.
In an alternative embodiment, the filter system is connected with a flushing pipe for flushing the filter screen inside.
In an alternative embodiment, the apparatus for refining dilute sulfuric acid further comprises a wastewater treatment system, the filtration system having a waste drain in communication with the wastewater treatment system.
In an alternative embodiment, the device for refining dilute sulfuric acid further comprises a concentrated sulfuric acid storage tank, wherein the concentrated sulfuric acid storage tank is communicated with the enamel dilution kettle, and a conveying pump is arranged on a pipeline for communicating the concentrated sulfuric acid storage tank with the enamel dilution kettle.
In an alternative embodiment, the pipe demagnetizer is one with a magnetic force of 8000-12000 GS.
In alternative embodiments, the number of pipe demagnetizers is 4 or 5, and these demagnetizers are connected in series.
In a second aspect, the present utility model provides a ternary precursor preparation system comprising an apparatus for refining dilute sulfuric acid according to any of the preceding embodiments.
The embodiment of the utility model has the beneficial effects that:
The device for refining the dilute sulfuric acid is used for diluting the dilute sulfuric acid with low impurity content, and the pipeline demagnetizer is arranged between the diluting kettle and the dilute sulfuric acid storage tank, so that the magnetic metal impurities doped in the dilute sulfuric acid can be removed, the obtained dilute sulfuric acid applied to preparing the ternary precursor is low in magnetic impurity content, and when the dilute sulfuric acid is used for preparing the ternary precursor, the prepared ternary precursor is low in magnetic metal impurity content, and the safety of the prepared ternary precursor battery is further ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an apparatus for refining dilute sulfuric acid according to an embodiment of the present utility model.
Icon is 100-device for refining dilute sulfuric acid; 110-a concentrated sulfuric acid storage tank; 111-a transfer pump; 112-a flow regulating valve; 120-enamel diluting kettle; 121-a pure water inlet pipe; 130-a primary filter; 140-a two-stage filter; 141-flushing water pipes; 142-a waste liquid discharge pipe; 150-a pipeline demagnetizer; 160-dilute sulfuric acid storage tank; 170-a wastewater treatment system.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The device 100 for refining dilute sulfuric acid according to the embodiment of the utility model comprises an enamel dilution tank 120, a pipeline demagnetizer 150 and a dilute sulfuric acid storage tank 160 which are sequentially communicated.
The safety performance of the ternary precursor has higher correlation with the magnetic foreign matters contained in the ternary precursor, so that strict requirements are imposed on the content of the magnetic foreign matters. The device 100 for refining the dilute sulfuric acid provided by the utility model is used for diluting the dilute sulfuric acid with low impurity content, and the pipeline demagnetizer 150 is arranged between the diluting kettle and the dilute sulfuric acid storage tank 160, so that the magnetic metal impurities doped in the dilute sulfuric acid can be removed, the obtained dilute sulfuric acid applied to preparing the ternary precursor has low magnetic impurity content, and when the dilute sulfuric acid is used for preparing the ternary precursor, the prepared ternary precursor has low magnetic metal impurity content, so that the safety of a battery prepared from the ternary precursor is further ensured.
The enamel dilution tank 120 used in this embodiment is a high temperature resistant reaction tank because the concentrated sulfuric acid dilution process releases a large amount of heat. Specifically, the inside of the reaction kettle is a dilution reaction generating part, an interlayer is arranged outside the reaction structure, circulating water is led into the interlayer to absorb heat in the dilution reaction process in the running process of the equipment, and the temperature of the reaction kettle is reduced.
Further, the apparatus 100 for refining dilute sulfuric acid further comprises a concentrated sulfuric acid storage tank 110, and the concentrated sulfuric acid storage tank 110 is communicated with the enamel dilution tank 120. A conveying pump 111 is arranged on a pipeline communicated with the concentrated sulfuric acid storage tank 110 and the enamel dilution tank 120 and is used for pumping concentrated sulfuric acid into the enamel dilution tank 120.
The concentrated sulfuric acid storage tank 110 provides the enamel dilution tank 120 with concentrated sulfuric acid, which is diluted into dilute sulfuric acid by mixing with pure water after reaching the enamel dilution tank 120.
Further, a flow regulating valve 112 is also arranged on a pipeline for communicating the concentrated sulfuric acid storage tank 110 and the enamel dilution kettle 120, and is used for regulating the flow of the concentrated sulfuric acid.
Further, in order to maintain the demagnetizing effect, the pipeline demagnetizer 150 is a demagnetizer with a magnetic force of 8000-12000 GS.
Further, the number of the pipe demagnetizers 150 is 4 or 5, and these demagnetizers are connected in series.
The magnetic substance in the dilute sulfuric acid is fully removed by connecting a plurality of demagnetizers in series, and after repeated verification, when 4 or 5 demagnetizers are arranged in series, the full demagnetizing effect can be ensured, and the electric power waste can be avoided as much as possible.
Further, the apparatus 100 for refining dilute sulfuric acid further comprises a filtration system, wherein the filtration system is arranged between the enamel dilution tank 120 and the pipeline demagnetizer 150, and the enamel dilution tank 120, the filtration system, the pipeline demagnetizer 150 and the dilute sulfuric acid storage tank 160 are sequentially communicated through pipelines.
The filtering system removes the solid impurities doped in the preparation process of the dilute sulfuric acid by utilizing the effect of intercepting the solid impurities and foreign matters, thereby ensuring the purity of the prepared dilute sulfuric acid.
Further, the filtration system comprises two precision filters in series.
The two precise filters are used for filtering the dilute sulfuric acid, so that the quality of the prepared dilute sulfuric acid is further ensured.
Specifically, the two precision filters are a primary filter 130 having a cartridge accuracy of 50 to 100 μm and a secondary filter 140 having a cartridge accuracy of 0.5 to 1 μm, respectively.
Further, the filter system is connected with a flushing water pipe 141 for flushing the filter screen inside thereof.
After the filtering system is used for a long time, the retained impurities are accumulated to reduce the filtering efficiency, so that high-pressure flushing water is required to be introduced into the filtering system through the flushing water pipe 141 for back flushing the filter screen after one end of use, and the retained impurities are flushed away to recover the filtering efficiency of the filtering system.
Further, the apparatus 100 for refining dilute sulfuric acid further includes a wastewater treatment system 170 having a waste liquid discharge pipe 142, the waste liquid discharge pipe 142 being in communication with the wastewater treatment system 170.
The washing water discharged from the filtering system is discharged into the wastewater treatment system 170 through the wastewater discharge pipe, and the wastewater treatment system 170 treats the wastewater and discharges or continuously recycles the wastewater.
The treatment units used in the apparatus 100 for purifying dilute sulfuric acid according to the present utility model are all existing devices, and the apparatus 100 for purifying dilute sulfuric acid according to the present utility model can be obtained by assembling these existing devices.
The working procedure of the device 100 for refining dilute sulfuric acid provided by the embodiment of the utility model is as follows:
As shown in fig. 1, concentrated sulfuric acid is stored in a concentrated sulfuric acid storage tank 110. During operation, pure water is introduced into the enamel dilution kettle 120 through the pure water inlet pipe 121, the opening degree of the flow regulating valve 112 is regulated, and concentrated sulfuric acid is introduced into the enamel dilution kettle 120 from the concentrated sulfuric acid storage tank 110 through the flow regulating valve 112 under the action of the conveying pump 111;
Slowly adding concentrated sulfuric acid into the enamel dilution tank 120, and mixing with pure water in the enamel dilution tank 120 for dilution;
Dilute sulfuric acid diluted in the enamel dilution kettle 120 is cooled to 30-40 ℃, and then is introduced into a primary filter 130 for first filtration, and larger impurities are filtered;
the dilute sulfuric acid obtained by the first filtration is introduced into the secondary filter 140 to be filtered again, so that smaller impurities are intercepted.
The diluted sulfuric acid is filtered twice, and impurities contained in the diluted sulfuric acid are basically removed.
The diluted sulfuric acid after the twice filtration enters the pipeline demagnetizer 150 for demagnetizing. The diluted sulfuric acid after being demagnetized by the pipeline demagnetizer 150 accords with the production and use requirements of the ternary precursor, and the magnetic foreign matters are all at ppm level.
Impurities intercepted by the two filters in the filtering process are washed out and discharged into the wastewater treatment system 170 for treatment through irregular backwashing.
In summary, in the apparatus 100 for refining dilute sulfuric acid according to the present utility model, since the pipe demagnetizer 150 is disposed between the diluting kettle and the dilute sulfuric acid storage tank 160, the magnetic metal impurities doped in the dilute sulfuric acid can be removed, so that the content of the magnetic impurities in the obtained dilute sulfuric acid applied to the preparation of the ternary precursor can be ensured to be low, and when the dilute sulfuric acid is used to prepare the ternary precursor, the content of the magnetic metal impurities in the prepared ternary precursor is low, thereby ensuring the safety of the battery prepared from the prepared ternary precursor.
The device for refining the dilute sulfuric acid provided by the embodiment of the utility model can bring the following advantages for the preparation process of the ternary precursor:
1. The sulfuric acid cost is effectively reduced, and compared with the concentrated sulfuric acid of a refined reagent grade, the cost is reduced by about 50 percent;
2. effectively intercept visual impurities in sulfuric acid;
3. Effectively filtering and intercepting metal impurities in sulfuric acid, wherein the impurity content accords with the production standard of ternary precursors;
4. the dilute sulfuric acid impurity accords with the production standard, and the wastewater treatment reuse water accords with the reuse standard;
5. The phenomenon that dilute sulfuric acid blocks a dosing pipeline due to impurities is avoided, and the process index control is affected.
The utility model also provides a ternary precursor preparation system, which comprises the device 100 for refining dilute sulfuric acid.
The diluted sulfuric acid obtained by diluting the device 100 for refining the diluted sulfuric acid is applied to the preparation process of the ternary precursor, and the prepared ternary precursor has low magnetic foreign matter content and high safety.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The device for refining the dilute sulfuric acid is characterized by comprising an enamel dilution kettle, a pipeline demagnetizer and a dilute sulfuric acid storage tank which are sequentially communicated.
2. The apparatus for refining dilute sulfuric acid according to claim 1, further comprising a filtration system disposed between the enamel dilution tank and the pipe demagnetizer, wherein the enamel dilution tank, the filtration system, the pipe demagnetizer and the dilute sulfuric acid tank are sequentially connected by pipes.
3. The apparatus for refining dilute sulfuric acid according to claim 2, wherein said filtration system comprises two fine filters in series.
4. The apparatus for purifying dilute sulfuric acid according to claim 3, wherein the two precision filters are a primary filter having a cartridge accuracy of 50 to 100 μm and a secondary filter having a cartridge accuracy of 0.5 to 1 μm, respectively.
5. The apparatus for refining dilute sulfuric acid according to claim 2, wherein the filtering system is connected with a flushing water pipe for flushing the filter screen inside thereof.
6. The apparatus for refining dilute sulfuric acid according to claim 5, further comprising a wastewater treatment system, wherein said filtration system has a reject drain in communication with said wastewater treatment system.
7. The apparatus for refining dilute sulfuric acid according to claim 1, further comprising a concentrated sulfuric acid storage tank, wherein the concentrated sulfuric acid storage tank is communicated with the enamel dilution tank, and a delivery pump is arranged on a pipeline through which the concentrated sulfuric acid storage tank is communicated with the enamel dilution tank.
8. The apparatus for purifying dilute sulfuric acid according to claim 1, wherein the pipe demagnetizer is a demagnetizer having a magnetic force of 8000 to 12000 GS.
9. The apparatus for purifying dilute sulfuric acid according to claim 8, wherein the number of the pipe demagnetizers is 4 or 5, and the demagnetizers are connected in series.
10. A ternary precursor preparation system comprising an apparatus for refining dilute sulfuric acid according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322185191.0U CN221131340U (en) | 2023-08-14 | 2023-08-14 | Device for refining dilute sulfuric acid and ternary precursor preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322185191.0U CN221131340U (en) | 2023-08-14 | 2023-08-14 | Device for refining dilute sulfuric acid and ternary precursor preparation system |
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| Publication Number | Publication Date |
|---|---|
| CN221131340U true CN221131340U (en) | 2024-06-14 |
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| CN202322185191.0U Active CN221131340U (en) | 2023-08-14 | 2023-08-14 | Device for refining dilute sulfuric acid and ternary precursor preparation system |
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| Country | Link |
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| CN (1) | CN221131340U (en) |
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- 2023-08-14 CN CN202322185191.0U patent/CN221131340U/en active Active
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Address after: 644200 Qifeng Road, Yangchun Industrial Park, Jiang'an County, Yibin, Sichuan Province Patentee after: YIBIN GUANGYUAN LITHIUM BATTERY CO.,LTD. Country or region after: China Patentee after: Yibin Lithium Treasure New Materials Co.,Ltd. Address before: 644200 Qifeng Road, Yangchun Industrial Park, Jiang'an County, Yibin, Sichuan Province Patentee before: YIBIN GUANGYUAN LITHIUM BATTERY CO.,LTD. Country or region before: China Patentee before: Yibin Libao New Materials Co.,Ltd. |