CN207904011U - A kind of LiFePO4 production technology liquid waste treatment system - Google Patents
A kind of LiFePO4 production technology liquid waste treatment system Download PDFInfo
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- CN207904011U CN207904011U CN201820120735.1U CN201820120735U CN207904011U CN 207904011 U CN207904011 U CN 207904011U CN 201820120735 U CN201820120735 U CN 201820120735U CN 207904011 U CN207904011 U CN 207904011U
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- China
- Prior art keywords
- production technology
- pipeline
- treatment system
- waste treatment
- liquid waste
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 229910052493 LiFePO4 Inorganic materials 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 239000010808 liquid waste Substances 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 239000002699 waste material Substances 0.000 claims abstract description 37
- 238000001728 nano-filtration Methods 0.000 claims abstract description 30
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 28
- 238000004064 recycling Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 150000002500 ions Chemical class 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000008235 industrial water Substances 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- WMFOQBRAJBCJND-UHFFFAOYSA-M lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000001027 hydrothermal synthesis Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005429 turbidity Methods 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L Iron(II) sulfate Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 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
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004429 atoms Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The utility model is related to a kind of LiFePO4 production technology liquid waste treatment systems, including sequentially connected pretreatment unit, filter device, ultrafiltration apparatus, nanofiltration device and reverse osmosis unit, pretreatment unit is connected to by pipeline with the material fluid bath for storing waste liquid, and reverse osmosis unit is connected to by pipeline with water producing tank.The utility model has the beneficial effects that by pretreatment, filtering, ultrafiltration, nanofiltration and it is reverse osmosis etc. the waste liquid generated in LiFePO4 production technology is carried out that processing is filtered for multiple times, ion that can be effectively in Recycling of waste liquid, the rate of recovery improves, and saves production cost；Meanwhile industrial water can be recycled, and economize on resources.
Description
Technical field
The utility model is related to new energy materials production equipment technologies, and in particular to a kind of LiFePO4 production technology
Liquid waste treatment system.
Background technology
LiFePO4 (LiFePO4) material of crystallographic system olivine-type is due to high, cheap with specific capacity, dirty without environment
Dye, the advantages that safety and thermal stability are good and become a kind of most potential lithium-ion-power cell material, countries in the world are just
Competitively realize industrialization production.
In the prior art, the method for synthesizing iron lithium phosphate mainly has：Solid phase method, hydrothermal synthesis method, sol-gel method, water
It is a kind of novel synthetic method that phase co-electrodeposition method etc., wherein hydro-thermal method, which prepare LiFePO4, and this method utilizes high temperature and pressure
Aqueous solution makes insoluble or indissoluble substance dissolving and recrystallization in atmospheric conditions, or reaction produce the dissolving production of the substance
Object.Since raw material is dissolved mixing by this method in the solution, it is easier to reach ideal atom level mixing.
Hydro-thermal method prepares LiFePO4 and uses LiOH, FeSO4、H3PO4As raw material, mistake after being reacted in 200 DEG C of reaction kettles
Filter washing, then high temperature sintering, technique reproducibility height, product characteristic are more easy to control again.Main problem is existing for this method
The technique is low to the rate of recovery of ion, especially to lithium ion, input amount FeSO4Three times, production cost is high.Therefore,
The application provides a set of liquid waste treatment system, and returning for ion recycling especially lithium ion is carried out to the waste liquid generated in production technology
It receives, reduces production cost.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of LiFePO4 production technology liquid waste treatment systems, lead to
Ion in the waste liquid generated in LiFePO4 production process can effectively be recycled by crossing the system, and organic efficiency is high, and production cost is bright
It is aobvious to reduce.
The technical solution that the utility model solves above-mentioned technical problem is as follows：
A kind of LiFePO4 production technology liquid waste treatment system, including it is sequentially connected pretreatment unit, filter device, super
Device, nanofiltration device and reverse osmosis unit are filtered, the pretreatment unit is connected by pipeline and the material fluid bath for storing waste liquid
Logical, the reverse osmosis unit is connected to by pipeline with water producing tank.
The utility model has the beneficial effects that：The waste liquid generated in being produced to LiFePO4 by pretreatment unit carries out pre-
Processing so that reach the condition of filtration treatment；It is more by filter device, ultrafiltration apparatus, nanofiltration device and reverse osmosis unit etc.
Secondary filtration treatment, classification recycling ion, organic efficiency is high, reduces production cost；Filtered production is recycled by water producing tank to use
Water is recycled, is economized on resources.
Based on the above technical solution, the utility model can also do following improvement.
Further, the pretreatment unit is heat exchanger.
It is to control the temperature of waste liquid by way of heat exchanger processing using the advantageous effect of above-mentioned further scheme, makes
It meets subsequently into the temperature requirement of film process.
Further, the filter device uses cartridge filter.
It is by cartridge filter to remove 1 degree of turbidity or more in waste liquid to use the advantageous effect of above-mentioned further scheme
Fine particles remove suspended matter and floccule in waste liquid, to make waste liquid meet the requirement of subsequent handling processing.
Further, the pipeline between the pretreatment unit and the cartridge filter is equipped with low-lift pump.
Advantageous effect using above-mentioned further scheme is that pretreated waste liquid is sent into security personnel's filtering by low-lift pump
Device.
Further, the pipeline between the ultrafiltration apparatus and the nanofiltration device is equipped with circulating pump.
Advantageous effect using above-mentioned further scheme is that the recycling of industrial water can be realized by circulating pump, is saved
Resource.
Further, the pipeline between the nanofiltration device and the reverse osmosis unit is equipped with booster pump.
Advantageous effect using above-mentioned further scheme is that nanofiltration, treated that waste liquid is pressurized by booster pump, is made
It meets the requirement of follow-up reverse-osmosis treated.
Further, the nanofiltration device is connected to the first dope recycling bins respectively by pipeline, and the reverse osmosis unit is logical
Pipeline is crossed to be connected to the second dope recycling bins.
Advantageous effect using above-mentioned further scheme is distinguished by the first dope recycling bins and the second dope recycling bins
Recycle the concentrated water after nanofiltration processing and reverse-osmosis treated.
Further, the pipeline that the nanofiltration device is connected to the first dope recycling bins is equipped with pressure reducing valve.
Advantageous effect using above-mentioned further scheme is to make the pressure remained steady of discharge outlet by pressure reducing valve.
Description of the drawings
Fig. 1 is the structural schematic diagram of liquid waste treatment system in LiFePO4 production technology in the utility model.
In attached drawing, parts list represented by the reference numerals are as follows：
1, pretreatment unit, 2, filter device, 3, ultrafiltration apparatus, 4, nanofiltration device, 5, reverse osmosis unit, 6, material fluid bath,
7, the first dope recycling bins, the 8, second dope recycling bins, 9, water producing tank, 10, low-lift pump, 11, circulating pump, 12, booster pump, 13,
Pressure reducing valve.
Specific implementation mode
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1, the utility model provides a kind of LiFePO4 production technology liquid waste treatment system, including it is sequentially connected
Pretreatment unit 1, filter device 2, ultrafiltration apparatus 3, nanofiltration device 4 and reverse osmosis unit 5, pretreatment unit 1 passes through pipe
Road is connected to the material fluid bath 6 for storing waste liquid, and the waste liquid that pretreatment unit 1 generates in being produced to LiFePO4 carries out cooling place
It manages and adjusts its pH value, it is ensured that its pH value is in 3~11 ranges and temperature is less than 45 DEG C, reaches the condition of subsequent processing；It receives
Filter device 4 mainly carries out interception recycling to the multivalent ion in waste liquid, and reverse osmosis unit 5 is to leading ion such as Li+It is blocked
Recycling is cut, the rate of recovery reaches 90% or more, can be according to different technological requirements to concentrated water or production water in actual production process
Carry out multiple reverse-osmosis treated；Reverse osmosis unit 5 is connected to by pipeline with water producing tank 9, and 9 remanufacture water of water producing tank is to follow
Ring uses, and economizes on resources.The utility model is multiple by filter device, ultrafiltration apparatus, nanofiltration device and reverse osmosis unit etc.
Filtration treatment, classification recycling ion, organic efficiency is high, reduces production cost, and economic benefit improves.
In the utility model, pretreatment unit 1 is preferably heat exchanger, is produced in being produced to LiFePO4 by heat exchanger
Raw waste liquid carries out cooling treatment, its temperature is made to be down to 45 DEG C or less；Meanwhile it being adjusted using acid-base solution (phosphoric acid, lithium hydroxide)
Save the pH value of waste liquid, it is ensured that pH value is 3~11, to meet the requirement of subsequent processing.The method of waste liquid cooling herein also can be used
Natural cooling, although this processing mode is more energy saving, at that time for heat exchanger, production efficiency is substantially reduced.
Preferably, in the utility model, filter device 2 uses cartridge filter, cartridge filter to be also known as accurate filter,
By cartridge filter to remove the fine particles of 1 degree of turbidity or more in waste liquid, suspended matter and floccule in waste liquid are removed, from
And waste liquid is made to meet the requirement that subsequent handling is handled.
In the utility model, the pipeline between pretreatment unit 1 and cartridge filter is equipped with low-lift pump 10, passes through low pressure
Pretreated waste liquid is sent into cartridge filter by pump 10, it is made to meet the requirement of cartridge filter filtering, energy conservation and environmental protection.
In the utility model, the pipeline between ultrafiltration apparatus 3 and nanofiltration device 4 is equipped with circulating pump 11, passes through circulating pump
11 can realize the recycling of industrial water, economize on resources.
In the utility model, the pipeline between nanofiltration device 4 and the reverse osmosis unit 5 is equipped with booster pump 12, passes through
Treated that waste liquid is pressurized to nanofiltration for booster pump 12, it is made to meet the requirement of follow-up reverse-osmosis treated.
In the utility model, nanofiltration device 4 is connected to by pipeline with the first dope recycling bins 7, and reverse osmosis unit 5 passes through pipe
Road the second dope recycling bins 8 are connected to, and the first dope recycling bins 7 recycle nanofiltration treated dope, recycle a part of ion, herein
That mainly recycle is Fe2+；Second dope recycling bins 8 recycle the dope after reverse-osmosis treated, recycle a part of ion, herein mainly
Recycling is Li+。
It, can be respectively in nanofiltration device 4 and reverse osmosis to further increase the rate of recovery of waste liquid intermediate ion in addition to above structure
One circulation line is respectively installed, circulation line is equipped with circulating pump on device 5.According to the requirement of different process, can to nanofiltration and
The production water of concentrated water after reverse osmosis is repeatedly handled, and the ion rate of recovery is improved.
In the utility model, the dope recycling discharge outlet of nanofiltration device 4 is equipped with pressure reducing valve 13, and pressure reducing valve 13 fills nanofiltration
It sets the pressure in 4 and is down to the pressure of discharge port, and it is made to keep the pressure of stabilization constant.
The operation principle of the utility model is as follows：
When work, pretreatment unit 1 cools down waste liquid and is adjusted pH value, reaches the requirement of subsequent processing；It will be pre-
Treated waste liquid is sent into cartridge filter and is filtered, and suspended matter and floccule in waste liquid are removed；Above-mentioned waste liquid is sent
Enter in ultrafiltration apparatus 3, ultrafiltration apparatus 3 is a kind of pressurization membrane separation technique, i.e., under pressure, makes small molecule solute and molten
Agent passes through the special film of certain pore size, and macromolecular solute is prevented one side of film to be stayed in, from penetrating to make macromolecular complex
Matter has obtained the purifying of part；Waste liquid after ultrafiltration is sent into nanofiltration device 4 under the action of circulating pump, and nanofiltration is one kind between anti-
Pressure-driven membrane separating process between infiltration and ultrafiltration, in several rans, nanofiltration device 4 is the pore diameter range of NF membrane
The smaller multivalent ion of relative molecular weight in waste liquid is separated；Treated waste liquid is sent under the action of booster pump
Reverse osmosis unit 5, reverse osmosis unit 5 carry out purifies and separates using pressure difference to waste liquid, especially by the leading ion in waste liquid
Li+It separates, finally obtained production water is Ke Xunhuanliyong, economizes on resources.
After the waste liquid that the utility model generates in being produced to LiFePO4 is pre-processed and processing is filtered for multiple times, classification
Ion in Recycling of waste liquid, especially Li+, the rate of recovery is high, has saved production cost, economic benefit significantly improves.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of LiFePO4 production technology liquid waste treatment system, it is characterised in that：Including sequentially connected pretreatment unit
(1), filter device (2), ultrafiltration apparatus (3), nanofiltration device (4) and reverse osmosis unit (5), the pretreatment unit (1) are logical
It crosses pipeline to be connected to the material fluid bath (6) for storing waste liquid, the reverse osmosis unit (5) is connected to by pipeline with water producing tank (9).
2. a kind of LiFePO4 production technology liquid waste treatment system according to claim 1, it is characterised in that：The pre- place
It is heat exchanger to manage device (1).
3. a kind of LiFePO4 production technology liquid waste treatment system according to claim 1, it is characterised in that：The filtering
Device (2) uses cartridge filter.
4. a kind of LiFePO4 production technology liquid waste treatment system according to claim 3, it is characterised in that：The pre- place
The pipeline managed between device (1) and the cartridge filter is equipped with low-lift pump (10).
5. a kind of LiFePO4 production technology liquid waste treatment system according to claim 1, it is characterised in that：The ultrafiltration
Pipeline between device (3) and the nanofiltration device (4) is equipped with circulating pump (11).
6. a kind of LiFePO4 production technology liquid waste treatment system according to claim 1, it is characterised in that：The nanofiltration
Pipeline between device (4) and the reverse osmosis unit (5) is equipped with booster pump (12).
7. a kind of LiFePO4 production technology liquid waste treatment system according to any one of claims 1 to 6, feature exist
In：The nanofiltration device (4) is connected to by pipeline with the first dope recycling bins (7), the reverse osmosis unit (5) by pipeline with
Second dope recycling bins (8) are connected to.
8. a kind of LiFePO4 production technology liquid waste treatment system according to claim 7, it is characterised in that：The nanofiltration
The pipeline that device (4) is connected to the first dope recycling bins (7) is equipped with pressure reducing valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820120735.1U CN207904011U (en) | 2018-01-24 | 2018-01-24 | A kind of LiFePO4 production technology liquid waste treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820120735.1U CN207904011U (en) | 2018-01-24 | 2018-01-24 | A kind of LiFePO4 production technology liquid waste treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207904011U true CN207904011U (en) | 2018-09-25 |
Family
ID=63564842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820120735.1U Active CN207904011U (en) | 2018-01-24 | 2018-01-24 | A kind of LiFePO4 production technology liquid waste treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207904011U (en) |
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2018
- 2018-01-24 CN CN201820120735.1U patent/CN207904011U/en active Active
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