CN220310437U - Continuous concentration and crystal nucleus separation system for new energy battery precursor - Google Patents
Continuous concentration and crystal nucleus separation system for new energy battery precursor Download PDFInfo
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- CN220310437U CN220310437U CN202321809448.9U CN202321809448U CN220310437U CN 220310437 U CN220310437 U CN 220310437U CN 202321809448 U CN202321809448 U CN 202321809448U CN 220310437 U CN220310437 U CN 220310437U
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- 239000002243 precursor Substances 0.000 title claims abstract description 40
- 239000013078 crystal Substances 0.000 title claims abstract description 38
- 238000000926 separation method Methods 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
- 238000001914 filtration Methods 0.000 claims abstract description 49
- 239000002245 particle Substances 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims abstract description 6
- 239000012528 membrane Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 230000006911 nucleation Effects 0.000 claims description 11
- 238000010899 nucleation Methods 0.000 claims description 11
- 238000010926 purge Methods 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 6
- 239000012141 concentrate Substances 0.000 abstract description 4
- 239000012295 chemical reaction liquid Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000012065 filter cake Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002562 thickening agent Substances 0.000 description 4
- 238000011001 backwashing Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000012066 reaction slurry Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a continuous concentration and crystal nucleus separation system for a new energy battery precursor, which comprises the following components: a reaction kettle, wherein the interior of the reaction kettle is used for carrying out a reaction for generating a precursor, and the reaction kettle is provided with a reaction kettle outlet communicated with the interior of the reaction kettle; the filter, the filter includes filtering the shell, be provided with filtration import, filtration export and play clear mouth on the filtering the shell, filtration import with reation kettle exit linkage is provided with the cross flow filter core in the filtering the shell, the cross flow filter core be used for holding back solid particle and separation crystal nucleus, the filtration export is used for discharging by the solid particle that the cross flow filter core held back, play clear mouth is used for discharging by the crystal nucleus that the cross flow filter core separated. The utility model has the advantages of this application simple structure, area are little, can concentrate and separate the operation in succession to reduce the quantity of crystal nucleus in the reaction solution, thereby be convenient for prepare the precursor crystal that particle size distribution is narrow, the particle diameter is big, this application goes out clearly stable, controllable.
Description
Technical Field
The utility model relates to the field of new energy battery manufacturing, in particular to a continuous concentration and crystal nucleus separation system for a new energy battery precursor.
Background
In the production and manufacturing process of the new energy battery, the precursors such as ternary precursors, sodium-electricity precursors and the like need to be produced, and the precursor motor cars are crystals grown on crystal nucleus.
Taking sintering of ternary positive electrode materials as an example, sintering is generally carried out by adopting ternary precursors with narrower particle size distribution and uniform size particles, and the effect of good particle consistency can be obtained. However, when mass production is performed, an excessive number of crystal nuclei are easily generated in the reaction vessel, and since crystals such as ternary precursors are grown centering on the crystal nuclei, the excessive number of crystal nuclei easily causes an excessively small average particle size of the ternary precursors and an excessively wide particle size distribution.
Therefore, to ensure the size and distribution of the particle size of such precursors, it is one of the most effective means to separate part of the nuclei from the reaction slurry; in the prior art, a thickener or a settling tank is generally used for separating crystal nuclei, but the settling tank and the thickener have various defects, wherein the settling tank has limited separation efficiency and cannot raise the concentration of slurry to higher solid content, and the thickener has the problems of large volume and poor pollution resistance. In particular, the above-mentioned problems are technical problems to be solved in the art, which cannot be continuously produced in both the settling tank and the thickener.
Disclosure of Invention
The utility model mainly solves the technical problem of providing a continuous concentration and crystal nucleus separation system for a new energy battery precursor, which can be used for continuous production to concentrate precursor reaction slurry and separate crystal nuclei.
According to a first aspect, the present application provides a continuous concentration and nucleation separation system for a precursor of a new energy battery, comprising: a reaction kettle, wherein the interior of the reaction kettle is used for carrying out a reaction for generating a precursor, and the reaction kettle is provided with a reaction kettle outlet communicated with the interior of the reaction kettle;
the filter, the filter includes filtering the shell, be provided with filtration import, filtration export and play clear mouth on the filtering the shell, filtration import with reation kettle exit linkage is provided with the cross flow filter core in the filtering the shell, the cross flow filter core be used for holding back solid particle and separation crystal nucleus, the filtration export is used for discharging by the solid particle that the cross flow filter core held back, play clear mouth is used for discharging by the crystal nucleus that the cross flow filter core separated.
In an alternative embodiment, the cross-flow filter element is internally provided with a hollow raw material cavity, one end of the raw material cavity is communicated with the filtering inlet, the other end of the raw material cavity is communicated with the filtering outlet, a clear liquid cavity is formed between the outer part of the membrane surface of the cross-flow filter element and the filtering shell, and the clear liquid cavity is communicated with the clear outlet.
In an alternative embodiment, a backwash pipeline is further included, and the backwash pipeline is communicated with the clear liquid cavity so as to backwash the membrane surface of the cross-flow filter element.
In an alternative embodiment, the cross-flow filter element is made of 316L stainless steel.
In an alternative embodiment, the filter further comprises a circulation pipeline, wherein one end of the circulation pipeline is communicated with the filter outlet, and the other end of the circulation pipeline is communicated with the filter inlet.
In an alternative embodiment, the circulation line is provided with a circulation pump.
In an alternative embodiment, the reactor further comprises a metering pump, and the outlet of the reaction kettle is connected with the filtering inlet through the metering pump.
In an alternative embodiment, the device further comprises a clearing pipeline and a negative pressure pump, wherein the clearing port is connected with the clearing pipeline through the negative pressure pump.
In an alternative embodiment, the reaction kettle comprises a kettle body, and the reaction kettle outlet is arranged on the kettle body and is communicated with the inside of the kettle body.
In an alternative embodiment, the reactor further comprises one or more feeding pipelines, wherein the feeding pipelines are communicated with the inner part of the reactor body so as to add reaction raw materials into the reactor body.
The beneficial effects of this application lie in: the utility model has the advantages of this application simple structure, area are little, can concentrate and separate the operation in succession to reduce the quantity of crystal nucleus in the reaction solution, thereby be convenient for prepare the precursor crystal that particle size distribution is narrow, the particle diameter is big, this application goes out clearly stable, controllable.
Drawings
FIG. 1 is an overall schematic of an embodiment of the present application;
FIG. 2 is a schematic illustration of a filter in an embodiment of the present application.
Reference numerals: the reactor comprises a reactor 1, a reactor body 11, a feeding pipeline 12, a filter 2, a filter shell 21, a filter inlet 22, a filter outlet 23, a clean out port 24, a cross-flow filter element 25, a backwashing pipeline 3, a circulating pipeline 4, a circulating pump 41, a metering pump 5, a clean out pipeline 6 and a negative pressure pump 61.
Detailed Description
The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.
Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.
As shown in fig. 1 and 2, the present application discloses a continuous concentration and nucleus separation system for a precursor of a new energy battery, which mainly comprises a reaction kettle 1 and a filter 2.
The reaction kettle 1 may be a reaction kettle 1 used for a known ternary precursor or other new energy battery precursor, and the reaction kettle 1 is provided with a cavity for performing a reaction, and a reaction raw material is added into the cavity, so that a precursor crystal nucleus can be formed, and the crystal nucleus can be promoted to grow into a precursor crystal. In a specific example, the reaction kettle 1 includes a kettle body 11, a reaction kettle outlet and a reaction kettle inlet are formed on the outer side of the kettle body 11, the reaction kettle inlet and the reaction kettle outlet are both communicated with a cavity in the kettle body 11, wherein the reaction kettle inlet is used for butting a feeding pipeline 12, a reaction material can be fed into the kettle body 11 through the feeding pipeline 12, and illustratively, the number of the feeding pipelines 12 corresponds to the number of substances participating in the reaction one by one, taking the reaction of a ternary precursor as an example, and the number of the feeding pipelines 12 can be three to respectively feed an alkali solution, a salt solution and an ammonia solution into the kettle body 11; and the outlet of the reaction vessel is communicated with the filter 2 to discharge the reaction solution to the filter 2.
In the present application, the filter 2 serves to trap the solid phase precursor, which has started to grow crystals, thereby concentrating the precursor, and at the same time, the filter 2 serves to separate the nuclei, which have not started to grow. In one embodiment, the filter 2 is composed of a filter housing 21 and a cross-flow filter element 25 disposed within the filter housing 21; the shape of the filter housing 21 may be adaptively selected according to requirements, for example, in a specific example, the filter housing 21 is composed of a cylinder, an upper end cap and a lower end cap, wherein a cavity is arranged in the cylinder to accommodate the cross flow filter element 25, and the upper end cap and the lower end cap are fixed at the upper end and the lower end of the cylinder to seal the two ends of the cylinder; the filtering shell 21 is provided with a filtering inlet 22, a filtering outlet 23 and a clear outlet 24 which are communicated with the inside of the cylinder, wherein the filtering inlet 22 is connected with the outlet of the reaction kettle so as to receive the reaction liquid discharged by the reaction kettle 1, the cross-flow filter element 25 is used for intercepting solid particles and separating crystal nuclei, and the intercepted solid is mixed with part of the reaction liquid discharged by the reaction kettle 1 to form concentrated water to be flushed to the filtering outlet 23; and the outlet 24 is for receiving the clear liquid separated by the cross-flow filter 25.
In a more specific example, as shown in fig. 1 and 2, the cross-flow filter element 25 is a tubular filter element, specifically, the cross-flow filter element 25 includes a membrane surface, the membrane surface is circumferentially enclosed to form a tubular structure, and a channel enclosed and defined by the inside of the membrane surface is defined as a raw material cavity; one end of the raw material cavity is communicated with the filtering inlet 22, and the other end is communicated with the filtering outlet 23, for example, the filtering inlet 22 can be arranged on the lower sealing end of the filtering shell 21, the filtering outlet 23 is oppositely arranged on the upper sealing end, the reaction liquid enters the raw material cavity from the lower end of the cross flow filter element 25, then the solid phase is trapped in the raw material cavity, and the crystal nucleus is discharged out of the raw material cavity through the membrane surface (the crystal nucleus has extremely small volume and cannot be trapped by the membrane surface); in this embodiment, a certain gap exists between the outside of the membrane surface of the cross-flow filter element 25 and the filter housing 21, and this gap is defined as a clear liquid chamber in this application, and the clear outlet 24 is opened on the side wall of the filter housing 21 and is communicated with the clear liquid chamber. It will be appreciated that, in order to fix the cross-flow filter element 25 in the filter housing 21 more stably and firmly, the filter housing 21 is fixedly provided with filter element mounting hole plates at both ends thereof, and the cross-flow filter element 25 is fixed by the filter element mounting hole plates. Furthermore, the cross-flow filter element 25 can be made of 316L stainless steel, which has good wear resistance and does not introduce magnetic foreign matters into the material.
According to the method, the cross-flow filter element 25 is used for concentration and separation, when filtration is carried out, fluid flows along the membrane surface direction of the cross-flow filter element 25, and the shearing force can wash the filter cake remained on the membrane surface, so that the thickness increase of the filter cake can be slowed down, and compared with a terminal filter element (such as a filter screen) and the like, the cross-flow filter element 25 can keep stable flux, and necessary conditions are provided for continuous concentration and filtration.
When the reactor works, reaction raw materials are put into the reactor 1 through the feeding pipeline 12, when the reaction is carried out to a certain extent, the outlet of the reactor is opened to enable the reactor 1 to be communicated with the filter 2, then reaction liquid enters the filter 2, crystal nuclei which do not grow yet are discharged to a clear liquid cavity, the purpose of reducing the crystal nuclei in the reaction liquid is achieved, the crystal nuclei which grow already are trapped, and the reaction liquid is flushed to the filtering outlet 23 to finish concentration, so that the crystal nuclei enter the next stage of reaction in a form of concentrated water; in the concentration and separation, the flow ratio of the clear liquid discharged from the filter 2 to the reaction liquid entering the filter can be controlled, so that continuous uninterrupted concentration can be realized. Thus, in an alternative embodiment, in order to better control the flow rate and flow rate of the reaction solution entering the filter 2, the filtering inlet 22 is connected with the outlet of the reaction kettle through a metering pump 5 (for example, a peristaltic pump) so as to accurately obtain the flow rate of the reaction solution discharged, similarly, the purge outlet 24 may be connected with the purge outlet 6 to discharge the clear solution containing the crystal nuclei, and the purge outlet 24 is connected with the purge outlet 6 through a negative pressure pump 61, where the negative pressure pump 61 provides power for filtering on the one hand, and can meter the discharged clear solution on the other hand and ensure the stability of the purge.
As shown in fig. 1 and 2, in an alternative design, the device further comprises a backwash pipeline 3, wherein the backwash pipeline 3 is communicated with the clear liquid cavity to backwash the membrane surface of the cross-flow filter element 25, and clear water is injected into the clear liquid cavity through the backwash pipeline 3 during backwashing, so that the membrane surface of the cross-flow filter element 25 can be flushed, and the residual filter cake is flushed.
As shown in fig. 1, in an alternative design, the device further comprises a circulation pipeline 4, one end of the circulation pipeline 4 is communicated with the filtering outlet 23, and the other end of the circulation pipeline is communicated with the filtering inlet 22 through a circulation pump 41, specifically, the circulation pipeline 4 can combine a part of concentrated water discharged from the filtering outlet 23 with reaction liquid discharged from the outlet of the reaction kettle, and then the concentrated water enters the inlet of the circulation pump 41 to ensure the material flow required for meeting the circulation speed.
The filter 2 of this application, through the material circulation, borrow material circulation flow can omit agitated vessel to can reduce filter 2's volume effectively, simultaneously, the filter cake of remaining at filter 2 membrane face can be taken away to the material in the circulation in-process, thereby keeps filter 2's flux, provides the basis for realizing continuous concentration and separation.
The utility model provides a continuous concentration and crystal nucleus separation system for new energy battery precursor, simple structure, area are little, can concentrate and separate the operation in succession to reduce the quantity of crystal nucleus in the reaction solution, thereby be convenient for prepare the precursor crystal that particle size distribution is narrow, the particle diameter is big, this application goes out clearly stable, controllable.
The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.
Claims (10)
1. A continuous concentration and nucleation separation system for a new energy battery precursor, comprising: a reaction kettle, wherein the interior of the reaction kettle is used for carrying out a reaction for generating a precursor, and the reaction kettle is provided with a reaction kettle outlet communicated with the interior of the reaction kettle;
the filter, the filter includes filtering the shell, be provided with filtration import, filtration export and play clear mouth on the filtering the shell, filtration import with reation kettle exit linkage is provided with the cross flow filter core in the filtering the shell, the cross flow filter core be used for holding back solid particle and separation crystal nucleus, the filtration export is used for discharging by the solid particle that the cross flow filter core held back, play clear mouth is used for discharging by the crystal nucleus that the cross flow filter core separated.
2. The continuous concentration and nucleation separation system for a precursor of a new energy battery according to claim 1, wherein the cross-flow filter element is internally provided with a hollow raw material cavity, one end of the raw material cavity is communicated with the filtering inlet, the other end of the raw material cavity is communicated with the filtering outlet, a clear liquid cavity is formed between the outer part of the membrane surface of the cross-flow filter element and the filtering shell, and the clear liquid cavity is communicated with the clear outlet.
3. The continuous concentration and nucleation separation system for a new energy battery precursor according to claim 2, further comprising a backwash line which communicates with the clean liquid chamber to backwash the membrane surface of the cross-flow filter element.
4. The continuous concentration and nucleation separation system for a precursor of a new energy battery according to claim 2, wherein the cross-flow filter element is made of 316L stainless steel.
5. The continuous concentration and nucleation separation system for a precursor of a new energy battery according to claim 1, further comprising a circulation line having one end in communication with the filtration outlet and the other end in communication with the filtration inlet.
6. The continuous concentration and nucleation separation system for a new energy battery precursor according to claim 5, wherein a circulation pump is provided on the circulation line.
7. The continuous concentration and nucleation separation system for a new energy battery precursor according to any one of claims 1 to 6, further comprising a metering pump, wherein said reaction vessel outlet is connected to said filtration inlet through said metering pump.
8. The continuous concentration and nucleation separation system for a new energy battery precursor according to any one of claims 1 to 6, further comprising a purge line and a negative pressure pump, wherein the purge port is connected to the purge line by the negative pressure pump.
9. The continuous concentration and nucleation separation system for a new energy battery precursor according to any one of claims 1 to 6, wherein said reaction vessel comprises a vessel body, and said reaction vessel outlet is provided on said vessel body and communicates with the inside of said vessel body.
10. The continuous concentration and nucleation separation system for a new energy battery precursor according to claim 9, further comprising one or more feed lines in communication with the interior of the tank body for feeding the reaction raw materials into the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321809448.9U CN220310437U (en) | 2023-07-10 | 2023-07-10 | Continuous concentration and crystal nucleus separation system for new energy battery precursor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321809448.9U CN220310437U (en) | 2023-07-10 | 2023-07-10 | Continuous concentration and crystal nucleus separation system for new energy battery precursor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220310437U true CN220310437U (en) | 2024-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321809448.9U Active CN220310437U (en) | 2023-07-10 | 2023-07-10 | Continuous concentration and crystal nucleus separation system for new energy battery precursor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220310437U (en) |
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2023
- 2023-07-10 CN CN202321809448.9U patent/CN220310437U/en active Active
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