CN206810070U - A kind of purifying concentration systems for the liquid of lithium containing magnesium - Google Patents
A kind of purifying concentration systems for the liquid of lithium containing magnesium Download PDFInfo
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- CN206810070U CN206810070U CN201720535064.0U CN201720535064U CN206810070U CN 206810070 U CN206810070 U CN 206810070U CN 201720535064 U CN201720535064 U CN 201720535064U CN 206810070 U CN206810070 U CN 206810070U
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- 239000007788 liquid Substances 0.000 title claims abstract description 110
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 87
- 239000011777 magnesium Substances 0.000 title claims abstract description 60
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 58
- 238000005374 membrane filtration Methods 0.000 claims abstract description 128
- 150000001875 compounds Chemical class 0.000 claims abstract description 125
- 238000001914 filtration Methods 0.000 claims abstract description 51
- 238000004140 cleaning Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims description 60
- 239000002131 composite material Substances 0.000 claims description 47
- 238000011084 recovery Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000002033 PVDF binder Substances 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 238000000108 ultra-filtration Methods 0.000 claims 3
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 description 18
- 239000011575 calcium Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 241001131796 Botaurus stellaris Species 0.000 description 4
- 229960005069 Calcium Drugs 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000001131 transforming Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- 229910003002 lithium salt Inorganic materials 0.000 description 3
- 159000000002 lithium salts Chemical class 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 210000000481 Breast Anatomy 0.000 description 1
- 229960003563 Calcium Carbonate Drugs 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L Magnesium hydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000003009 desulfurizing Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- -1 lithium magnesium Chemical compound 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000001187 sodium carbonate Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Abstract
Lithium liquid purification art is the utility model is related to, discloses a kind of purifying concentration systems for the liquid of lithium containing magnesium.The system includes stoste case, pretreatment unit, by-pass filtration unit, secondary filtration unit, three-stage filtration unit and level Four filter element；Pretreatment unit includes delivery pump and self-cleaning filter；By-pass filtration unit includes multiple one-level milipore filters；Secondary filtration unit includes two level water producing tank, two-stage conveying pump, two level cartridge filter, two level high-pressure pump and the compound membrane filtration module of two level；Three-stage filtration unit includes three-level water producing tank, three-level delivery pump, three-level cartridge filter, three-level high-pressure pump and the compound membrane filtration module of three-level；Level Four filter element includes level Four water producing tank, level Four delivery pump, level Four cartridge filter, level Four high-pressure pump and the compound membrane filtration module of level Four.The utility model can carry out purifying concentration to the liquid of lithium containing magnesium, and energy consumption is low, pollution-free, efficiency high, and impurity content is few in obtained lithium liquid, and lithium concentration is high.
Description
Technical field
It the utility model is related to lithium liquid purification art, more particularly to a kind of purifying concentration systems for the liquid of lithium containing magnesium.
Background technology
In current actual production process, the purifying concentration of lithium liquid is mainly using evaporation and concentration or precipitation, above two
The defects of respective be present in method.Wherein being concentrated by evaporation needs to expend a large amount of energy consumptions, and cost is high, and thickening efficiency is relatively low；And sink
Purifying form sediment while purifying, new impurity can be added into lithium liquid, and its is less efficient.Such as Application No.
The CN200910042883.1 Chinese patent of mandate discloses a kind of calcium circulation solid phase conversion method from low Mg/Li ratio salt lake bittern
It is middle extraction lithium salts method, using low Mg/Li ratio salt lake bittern as raw material, concentrated using bittern, the desulfurization of milk of lime de-magging, lithium carbonate
Separating calcium, sodium carbonate propose the technological processes such as lithium, High Temperature Dissociation of Calcium Carbonate, lime water chemical conversion breast to extract lithium carbonate product.Mainly
Technical essential is to be based on anion (OH-, CO3 2-) solid phase transformation principle, pass through Ca (OH)2→Mg(OH)2、Li2CO3→Ca
(OH)2And CaCO3→CaO→Ca(OH)2Solid phase transformation, realize the de-magging of bittern, deliming purification lithium salts and calcium be closed circuit follows
Ring.Utility model comprehensive utilization salt lake magnesium, lithium resource, have de-magging efficiency high, lithium salts good purification, the lithium magnesium rate of recovery
Height, less energy consumption, cost are low, calcium closed cycle and the features such as projects small investment.Whole technique is brief, cleaning, to environment
It is friendly.The utility model especially adapts to large-scale industrial production.
Above-mentioned patent using evaporation and concentration by the way of, there is previously described high energy consumption, cost is high, less efficient lacks
Point.Membrane separating process is a kind of without phase transformation, low energy consumption physical separating process, have efficiently, energy-conservation, it is pollution-free, easy to operate and
The features such as purposes is wide, it is one of state-of-the-art chemical separation technology generally acknowledged in the present age.
But for the purifying concentration in the prior art for lithium liquid, the purifying concentration that UF membrane is applied to lithium liquid is also deposited
In apparent technical problem：Lithium liquid purity, the concentration of concentration after UF membrane is not high enough, in practical application, generally requiring
Evaporation, precipitation is coordinated together to carry out, and overall process realizes that nothing is gone back in the purifying of lithium liquid concentration in the prior art by UF membrane
Method is accomplished.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of purifying concentration systems for the liquid of lithium containing magnesium.
The purifying concentration systems and method of the liquid of lithium containing magnesium of the present utility model can carry out purifying concentration to the liquid of lithium containing magnesium, and energy consumption is low, nothing
Pollution, efficiency high, and impurity content is few in obtained lithium liquid, lithium liquid concentration is high, suitable for practical application.
Concrete technical scheme of the present utility model is：A kind of purifying concentration systems for the liquid of lithium containing magnesium, including go here and there successively
Stoste case, pretreatment unit, by-pass filtration unit, secondary filtration unit, three-stage filtration unit and the level Four filter element of connection；Institute
State delivery pump and self-cleaning filter that pretreatment unit includes being sequentially connected in series；The by-pass filtration unit includes multiple in parallel
One-level milipore filter；The secondary filtration unit include be sequentially connected in series two level water producing tank, two-stage conveying pump, two level security personnel filtering
Device, two level high-pressure pump and the compound membrane filtration module of two level；The three-stage filtration unit include be sequentially connected in series three-level water producing tank, three
Level delivery pump, three-level cartridge filter, three-level high-pressure pump and the compound membrane filtration module of three-level；The level Four filter element include according to
Level Four water producing tank, level Four delivery pump, level Four cartridge filter, level Four high-pressure pump and the compound membrane filtration module of level Four of secondary series connection；
The compound membrane filtration module of level Four is provided with dense lithium liquid collecting pipe.
Compared with prior art, the utility model is coordinated the compound membrane filtration module of one-level milipore filter and three-level,
The purifying and concentration of the liquid of lithium containing magnesium are realized using overall process membrane separating method.The advantages of the utility model is：1st, it is whole to use
UF membrane, energy consumption is low, pollution-free, efficiency high.2nd, the specific setting of UF membranes at different levels is passed through so that the lithium concentrate finally obtained
Middle impurity content is few, and lithium liquid concentration is high, and suitable for practical application, it is more relatively low with concentration to solve impurity in membrane separation concentration liquid
Shortcoming.
Wherein, the effect of self-cleaning filter is to carry out pre-filtering, removes the large granular impurity in the liquid mother liquor of lithium containing magnesium, is prevented
Only filter membrane blocks.
Each cartridge filter is used for safety filtering of the waste water before membrane module is entered, and the purpose for setting this filter is
Retain due to above it is improper operation and enter circulating line batch can visible composition granule.
Preferably, two level compound membrane filtration module, the compound membrane filtration module of three-level and the compound membrane filtration group of level Four
Part is made up of multiple composite membranes, and the import of composite membrane, outlet are sequentially connected, and the outlet of first composite membrane also and last
The outlet connection of composite membrane.
Preferably, the one-level milipore filter is PVDF materials.
Preferably, the design pressure of the one-level milipore filter is 2.5-3.5Bar.
Preferably, the composite membrane is PA materials.
Preferably, the design pressure of the composite membrane of the compound membrane filtration module of two level is 17-19Bar；The three-level
The design pressure of the composite membrane of compound membrane filtration module is 34-36Bar；The composite membrane of the compound membrane filtration module of level Four is set
Meter pressure is 64-66Bar.
The utility model strictly sets the material and its design pressure of milipore filter, composite membrane, specific is set by different levels
The setting for counting pressure value coordinates, and has drawn under the working in coordination of above-mentioned each design pressure value, in the lithium concentrate finally given
The concentration of lithium ion is high, and the content of content of magnesium and other impurities is relatively low in concentrate.Due to the design of above-mentioned filter membranes at different levels
Relation in pressure value and gained lithium liquid between lithium concentration and magnesium density does not simultaneously have very strong regularity, of the present utility model
Design pressure values at different levels be the utility model people by long-term numerous studies combination experience obtained by, it is and obvious lacking
On the premise of regularity, those skilled in the art are also not readily available specific number of the present utility model by limited number of time experiment
Value, therefore the technical solution of the utility model is creative.
Preferably, it is connected with dense magnesium liquid recovery tube on last composite membrane of the compound membrane filtration module of two level；Institute
Last composite membrane for stating the compound membrane filtration module of three-level and the compound membrane filtration module of level Four is provided with light liquid recovery tube.
It is cleaning medicine-chest that the on-line cleaning device includes being sequentially connected in series, more preferably, be additionally included in line cleaning device
Individual flushing pump and cartridge filter in parallel；The cartridge filter respectively with milipore filter, the compound membrane filtration module of two level, three-level
The compound membrane filtration module connection of compound membrane filtration module, level Four；The compound membrane filtration module of milipore filter, two level, three-level composite membrane mistake
Cleaning return pipe is respectively equipped with filter component, the compound membrane filtration module of level Four again to be connected with cleaning medicine-chest.
The cleaning that first cleaning device is used for after system membranes component contamination, any membrane component have different journeys in concentration
The pollution of degree, therefore the cleaning of membranous system is necessary, the utility model targetedly provides cleaning side according to actual motion state
Case, to ensure that system is long-term, stable operation.
It is compared with the prior art, the beneficial effects of the utility model are：The purifying concentration of the liquid of lithium containing magnesium of the present utility model
System and method can carry out purifying concentration to the liquid of lithium containing magnesium, and energy consumption is low, pollution-free, efficiency high, and impurity in obtained lithium liquid
Content is few, and lithium liquid concentration is high, suitable for practical application.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Reference is：Stoste case 1, delivery pump 2, self-cleaning filter 3, one-level milipore filter 4, two level water producing tank 5, two level
The compound membrane filtration module 9 of delivery pump 6, two level cartridge filter 7, two level high-pressure pump 8, two level, three-level water producing tank 10, three-level conveying
The compound membrane filtration module 14 of pump 11, three-level cartridge filter 12, three-level high-pressure pump 13, three-level, level Four water producing tank 15, level Four conveying
The compound membrane filtration module 19 of pump 16, level Four cartridge filter 17, level Four high-pressure pump 18, level Four, dense lithium liquid collecting pipe 20, dense magnesium liquid
Recovery tube 21, light liquid recovery tube 22, cleaning medicine-chest 23, flushing pump 24, cartridge filter 25, cleaning return pipe 26.
Embodiment
With reference to embodiment, the utility model will be further described.
Embodiment 1
As shown in figure 1, a kind of purifying concentration systems for the liquid of lithium containing magnesium, including be sequentially connected in series stoste case 1, pretreatment
Unit, by-pass filtration unit, secondary filtration unit, three-stage filtration unit, level Four filter element and on-line cleaning device.
The pretreatment unit includes the delivery pump 2 and self-cleaning filter 3 being sequentially connected in series；The by-pass filtration unit bag
Include four one-level milipore filters 4 (PVDF materials, design pressure 3Bar) in parallel；The secondary filtration unit includes being sequentially connected in series
Two level water producing tank 5, two-stage conveying pump 6, two level cartridge filter 7, two level high-pressure pump 8 and the compound membrane filtration module 9 of two level；Institute
It is high to state three-level water producing tank 10, three-level delivery pump 11, three-level cartridge filter 12, three-level that three-stage filtration unit includes being sequentially connected in series
Press pump 13 and the compound membrane filtration module 14 of three-level；The level Four filter element includes level Four water producing tank 15, the level Four being sequentially connected in series
Delivery pump 16, level Four cartridge filter 17, level Four high-pressure pump 18 and the compound membrane filtration module 19 of level Four；The level Four composite membrane mistake
Filter component is provided with dense lithium liquid collecting pipe 20.
Two level compound membrane filtration module, the compound membrane filtration module of three-level and the compound membrane filtration module of level Four are by 3-4
Composite membrane (PA materials) is formed, and the import of composite membrane, outlet are sequentially connected, and the outlet of first composite membrane also and last
The outlet connection of composite membrane.Wherein, the design pressure of the composite membrane of the compound membrane filtration module of the two level is 18Bar；Described three
The design pressure of the composite membrane of the compound membrane filtration module of level is 35Bar；The composite membrane of the compound membrane filtration module of level Four is set
Meter pressure is 65Bar.Dense magnesium liquid recovery tube 21 is connected with last composite membrane of the compound membrane filtration module of two level；It is described
Last composite membrane of the compound membrane filtration module of three-level and the compound membrane filtration module of level Four is provided with light liquid recovery tube 22.
The on-line cleaning device includes the cleaning medicine-chest 23, multiple flushing pumps 24 in parallel and security personnel's filtering being sequentially connected in series
Device 25；The cartridge filter is multiple with milipore filter, the compound membrane filtration module of two level, the compound membrane filtration module of three-level, level Four respectively
Close membrane filtration module connection；The compound membrane filtration module of milipore filter, two level, the compound membrane filtration module of three-level, the compound membrane filtration of level Four
Cleaning return pipe 26 is respectively equipped with component again to be connected with cleaning medicine-chest.
A kind of purifying method for concentration for the liquid of lithium containing magnesium, comprise the following steps：
(1) pre-filtering is carried out to the liquid of lithium containing magnesium；
(2) liquid of lithium containing magnesium after pre-filtering is filtered in milipore filter；The design pressure of milipore filter is 3Bar；
(3) to the liquid of lithium containing magnesium after cartridge filter filters, concentration point is carried out into the compound membrane filtration module of two level
From collecting the dense magnesium liquid of separation；The design pressure of the compound membrane filtration module of two level is 18Bar；
(4) by the dense lithium liquid of step (3) after cartridge filter filters, carried out into the compound membrane filtration module of three-level
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of three-level is 35Bar；
(5) by the dense lithium liquid of step (4) after cartridge filter filters, carried out into the compound membrane filtration module of level Four
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of level Four is 65Bar；Collect dense lithium liquid.
In above steps, it is 20 DEG C to control fluid temperature, pH value 7-8.
Embodiment 2
A kind of purifying concentration systems for the liquid of lithium containing magnesium, including be sequentially connected in series stoste case 1, pretreatment unit, one-level
Filter element, secondary filtration unit, three-stage filtration unit, level Four filter element and on-line cleaning device.
The pretreatment unit includes the delivery pump 2 and self-cleaning filter 3 being sequentially connected in series；The by-pass filtration unit bag
Include multiple one-level milipore filters 4 in parallel (PVDF materials, design pressure 2.5Bar)；The secondary filtration unit includes going here and there successively
Two level water producing tank 5, two-stage conveying pump 6, two level cartridge filter 7, two level high-pressure pump 8 and the compound membrane filtration module 9 of two level of connection；
The three-stage filtration unit includes three-level water producing tank 10, three-level delivery pump 11, three-level cartridge filter 12, the three-level being sequentially connected in series
High-pressure pump 13 and the compound membrane filtration module 14 of three-level；The level Four filter element includes the level Four water producing tank 15, four being sequentially connected in series
Level delivery pump 16, level Four cartridge filter 17, level Four high-pressure pump 18 and the compound membrane filtration module 19 of level Four；The level Four composite membrane
Filter assemblies are provided with dense lithium liquid collecting pipe 20.
Two level compound membrane filtration module, the compound membrane filtration module of three-level and the compound membrane filtration module of level Four are by multiple multiple
Film (PA materials) composition is closed, import, the outlet of composite membrane are sequentially connected, and the outlet of first composite membrane is also multiple with last
Close the outlet connection of film.Wherein, the design pressure of the composite membrane of the compound membrane filtration module of the two level is 17Bar；The three-level
The design pressure of the composite membrane of compound membrane filtration module is 34Bar；The design of the composite membrane of the compound membrane filtration module of level Four
Pressure is 64Bar.Dense magnesium liquid recovery tube 21 is connected with last composite membrane of the compound membrane filtration module of two level；Described three
Last composite membrane of the compound membrane filtration module of level and the compound membrane filtration module of level Four is provided with light liquid recovery tube 22.
The on-line cleaning device includes the cleaning medicine-chest 23, multiple flushing pumps 24 in parallel and security personnel's filtering being sequentially connected in series
Device 25；The cartridge filter is multiple with milipore filter, the compound membrane filtration module of two level, the compound membrane filtration module of three-level, level Four respectively
Close membrane filtration module connection；The compound membrane filtration module of milipore filter, two level, the compound membrane filtration module of three-level, the compound membrane filtration of level Four
Cleaning return pipe 26 is respectively equipped with component again to be connected with cleaning medicine-chest.
A kind of purifying method for concentration for the liquid of lithium containing magnesium, comprise the following steps：
(1) pre-filtering is carried out to the liquid of lithium containing magnesium；
(2) liquid of lithium containing magnesium after pre-filtering is filtered in milipore filter；The design pressure of milipore filter is 2.5Bar；
(3) to the liquid of lithium containing magnesium after cartridge filter filters, concentration point is carried out into the compound membrane filtration module of two level
From collecting the dense magnesium liquid of separation；The design pressure of the compound membrane filtration module of two level is 17Bar；
(4) by the dense lithium liquid of step (3) after cartridge filter filters, carried out into the compound membrane filtration module of three-level
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of three-level is 34Bar；
(5) by the dense lithium liquid of step (4) after cartridge filter filters, carried out into the compound membrane filtration module of level Four
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of level Four is 64Bar；Collect dense lithium liquid.
In above steps, it is 5 DEG C to control fluid temperature, pH value 6-7.
Embodiment 3
A kind of purifying concentration systems for the liquid of lithium containing magnesium, including be sequentially connected in series stoste case 1, pretreatment unit, one-level
Filter element, secondary filtration unit, three-stage filtration unit, level Four filter element and on-line cleaning device.
The pretreatment unit includes the delivery pump 2 and self-cleaning filter 3 being sequentially connected in series；The by-pass filtration unit bag
Include multiple one-level milipore filters 4 in parallel (PVDF materials, design pressure 3.5Bar)；The secondary filtration unit includes going here and there successively
Two level water producing tank 5, two-stage conveying pump 6, two level cartridge filter 7, two level high-pressure pump 8 and the compound membrane filtration module 9 of two level of connection；
The three-stage filtration unit includes three-level water producing tank 10, three-level delivery pump 11, three-level cartridge filter 12, the three-level being sequentially connected in series
High-pressure pump 13 and the compound membrane filtration module 14 of three-level；The level Four filter element includes the level Four water producing tank 15, four being sequentially connected in series
Level delivery pump 16, level Four cartridge filter 17, level Four high-pressure pump 18 and the compound membrane filtration module 19 of level Four；The level Four composite membrane
Filter assemblies are provided with dense lithium liquid collecting pipe 20.
Two level compound membrane filtration module, the compound membrane filtration module of three-level and the compound membrane filtration module of level Four are by multiple multiple
Film (PA materials) composition is closed, import, the outlet of composite membrane are sequentially connected, and the outlet of first composite membrane is also multiple with last
Close the outlet connection of film.Wherein, the design pressure of the composite membrane of the compound membrane filtration module of the two level is 19Bar；The three-level
The design pressure of the composite membrane of compound membrane filtration module is 36Bar；The design of the composite membrane of the compound membrane filtration module of level Four
Pressure is 66Bar.Dense magnesium liquid recovery tube 21 is connected with last composite membrane of the compound membrane filtration module of two level；Described three
Last composite membrane of the compound membrane filtration module of level and the compound membrane filtration module of level Four is provided with light liquid recovery tube 22.
The on-line cleaning device includes the cleaning medicine-chest 23, multiple flushing pumps 24 in parallel and security personnel's filtering being sequentially connected in series
Device 25；The cartridge filter is multiple with milipore filter, the compound membrane filtration module of two level, the compound membrane filtration module of three-level, level Four respectively
Close membrane filtration module connection；The compound membrane filtration module of milipore filter, two level, the compound membrane filtration module of three-level, the compound membrane filtration of level Four
Cleaning return pipe 26 is respectively equipped with component again to be connected with cleaning medicine-chest.
A kind of purifying method for concentration for the liquid of lithium containing magnesium, comprise the following steps：
(1) pre-filtering is carried out to the liquid of lithium containing magnesium；
(2) liquid of lithium containing magnesium after pre-filtering is filtered in milipore filter；The design pressure of milipore filter is 2.5-
3.5Bar；
(3) to the liquid of lithium containing magnesium after cartridge filter filters, concentration point is carried out into the compound membrane filtration module of two level
From collecting the dense magnesium liquid of separation；The design pressure of the compound membrane filtration module of two level is 19Bar；
(4) by the dense lithium liquid of step (3) after cartridge filter filters, carried out into the compound membrane filtration module of three-level
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of three-level is 36Bar；
(5) by the dense lithium liquid of step (4) after cartridge filter filters, carried out into the compound membrane filtration module of level Four
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of level Four is 66Bar；Collect dense lithium liquid.
In above steps, it is 35 DEG C to control fluid temperature, pH value 8-9.
Comparative example 1
A kind of purifying method for concentration for the liquid of lithium containing magnesium, comprise the following steps：
(1) pre-filtering is carried out to the liquid of lithium containing magnesium；
(2) liquid of lithium containing magnesium after pre-filtering is filtered in milipore filter；The design pressure of milipore filter is 2Bar；
(3) to the liquid of lithium containing magnesium after cartridge filter filters, concentration point is carried out into the compound membrane filtration module of two level
From collecting the dense magnesium liquid of separation；The design pressure of the compound membrane filtration module of two level is 15Bar；
(4) by the dense lithium liquid of step (3) after cartridge filter filters, carried out into the compound membrane filtration module of three-level
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of three-level is 30Bar；
(5) by the dense lithium liquid of step (4) after cartridge filter filters, carried out into the compound membrane filtration module of level Four
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of level Four is 60Bar；Collect dense lithium liquid.
In above steps, it is 20 DEG C to control fluid temperature, pH value 7-8.
Comparative example 2
A kind of purifying method for concentration for the liquid of lithium containing magnesium, comprise the following steps：
(1) pre-filtering is carried out to the liquid of lithium containing magnesium；
(2) liquid of lithium containing magnesium after pre-filtering is filtered in milipore filter；The design pressure of milipore filter is 4Bar；
(3) to the liquid of lithium containing magnesium after cartridge filter filters, concentration point is carried out into the compound membrane filtration module of two level
From collecting the dense magnesium liquid of separation；The design pressure of the compound membrane filtration module of two level is 20Bar；
(4) by the dense lithium liquid of step (3) after cartridge filter filters, carried out into the compound membrane filtration module of three-level
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of three-level is 40Bar；
(5) by the dense lithium liquid of step (4) after cartridge filter filters, carried out into the compound membrane filtration module of level Four
Concentrating and separating, the light liquid of separation is collected, the design pressure of the compound membrane filtration module of level Four is 70Bar；Collect dense lithium liquid.
In above steps, it is 20 DEG C to control fluid temperature, pH value 7-8.
Water quality detection is carried out to dense lithium liquid, the light liquid of separation after embodiment 1 and the purifying concentration of comparative example 1,2, as a result
It is as follows：
Raw materials used in the utility model, equipment, it is the conventional raw material, equipment of this area unless otherwise noted；This reality
It is the conventional system of this area unless otherwise noted with new middle system for use in carrying.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent transformation made according to the utility model technical spirit to above example, still fall within
The protection domain of technical solutions of the utility model.
Claims (8)
- A kind of 1. purifying concentration systems for the liquid of lithium containing magnesium, it is characterised in that：Including the stoste case being sequentially connected in series（1）, pre- place Manage unit, by-pass filtration unit, secondary filtration unit, three-stage filtration unit and level Four filter element；The pretreatment unit bag Include the delivery pump being sequentially connected in series（2）And self-cleaning filter（3）；The by-pass filtration unit includes multiple one-level ultrafiltration in parallel Film（4）；The secondary filtration unit includes the two level water producing tank being sequentially connected in series（5）, two-stage conveying pump（6）, two level security personnel filtering Device（7）, two level high-pressure pump（8）With the compound membrane filtration module of two level（9）；The three-stage filtration unit includes the three-level being sequentially connected in series Water producing tank（10）, three-level delivery pump（11）, three-level cartridge filter（12）, three-level high-pressure pump（13）With the compound membrane filtration group of three-level Part（14）；The level Four filter element includes the level Four water producing tank being sequentially connected in series（15）, level Four delivery pump（16）, level Four ensured public security Filter（17）, level Four high-pressure pump（18）With the compound membrane filtration module of level Four（19）；The compound membrane filtration module of level Four is provided with Dense lithium liquid collecting pipe（20）.
- 2. a kind of purifying concentration systems for the liquid of lithium containing magnesium as claimed in claim 1, it is characterised in that the two level is compound The compound membrane filtration module of membrane filtration module, three-level and the compound membrane filtration module of level Four are made up of multiple composite membranes, and composite membrane enters Mouth, outlet are sequentially connected, and the outlet of first composite membrane is also connected with the outlet of last composite membrane.
- A kind of 3. purifying concentration systems for the liquid of lithium containing magnesium as claimed in claim 2, it is characterised in that the one-level ultrafiltration Film is PVDF materials.
- A kind of 4. purifying concentration systems for the liquid of lithium containing magnesium as claimed in claim 3, it is characterised in that the one-level ultrafiltration The design pressure of film is 2.5-3.5Bar.
- 5. a kind of purifying concentration systems for the liquid of lithium containing magnesium as described in one of claim 2-4, it is characterised in that described multiple Conjunction film is PA materials.
- 6. a kind of purifying concentration systems for the liquid of lithium containing magnesium as claimed in claim 5, it is characterised in that the two level is compound The design pressure of the composite membrane of membrane filtration module is 17-19Bar；The design pressure of the composite membrane of the compound membrane filtration module of three-level Power is 34-36Bar；The design pressure of the composite membrane of the compound membrane filtration module of level Four is 64-66Bar.
- 7. a kind of purifying concentration systems for the liquid of lithium containing magnesium as claimed in claim 2, it is characterised in that the two level is compound Dense magnesium liquid recovery tube is connected with last composite membrane of membrane filtration module（21）；The compound membrane filtration module of the three-level and level Four Last composite membrane of compound membrane filtration module is provided with light liquid recovery tube（22）.
- 8. a kind of purifying concentration systems for the liquid of lithium containing magnesium as claimed in claim 1, it is characterised in that it is clear to be additionally included in line Cleaning device, the on-line cleaning device include the cleaning medicine-chest being sequentially connected in series（23）, multiple flushing pumps in parallel（24）And security personnel Filter（25）；The cartridge filter respectively with milipore filter, the compound membrane filtration module of two level, the compound membrane filtration module of three-level, The compound membrane filtration module connection of level Four；The compound membrane filtration module of milipore filter, two level, the compound membrane filtration module of three-level, level Four are compound Cleaning return pipe is respectively equipped with membrane filtration module again（26）It is connected with cleaning medicine-chest.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107115793A (en) * | 2017-05-15 | 2017-09-01 | 杭州瑞纳膜工程有限公司 | A kind of purifying concentration systems and method for the liquid of lithium containing magnesium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107115793A (en) * | 2017-05-15 | 2017-09-01 | 杭州瑞纳膜工程有限公司 | A kind of purifying concentration systems and method for the liquid of lithium containing magnesium |
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