CN220907189U - Seawater lithium extraction system based on solar nanofluid - Google Patents
Seawater lithium extraction system based on solar nanofluid Download PDFInfo
- Publication number
- CN220907189U CN220907189U CN202322427155.0U CN202322427155U CN220907189U CN 220907189 U CN220907189 U CN 220907189U CN 202322427155 U CN202322427155 U CN 202322427155U CN 220907189 U CN220907189 U CN 220907189U
- Authority
- CN
- China
- Prior art keywords
- lithium
- cavity
- seawater
- lithium extraction
- nanofluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 121
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 239000013535 sea water Substances 0.000 title claims abstract description 119
- 238000000605 extraction Methods 0.000 title claims abstract description 87
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims abstract description 95
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000012267 brine Substances 0.000 claims abstract description 33
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 33
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 31
- 239000012528 membrane Substances 0.000 claims abstract description 29
- 238000009833 condensation Methods 0.000 claims abstract description 28
- 230000005494 condensation Effects 0.000 claims abstract description 28
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 22
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 21
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 239000012780 transparent material Substances 0.000 claims abstract description 12
- 238000004821 distillation Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 150000002500 ions Chemical class 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- 239000013505 freshwater Substances 0.000 claims description 9
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000002033 PVDF binder Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 239000003456 ion exchange resin Substances 0.000 claims description 4
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 13
- 238000010612 desalination reaction Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000001223 reverse osmosis Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000909 electrodialysis Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000037427 ion transport Effects 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000001471 micro-filtration Methods 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
- 238000010248 power generation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses a seawater lithium extraction system based on solar nanofluid. The seawater lithium extraction system of the utility model comprises: the top of the seawater preheating component is made of transparent materials, and nano fluid is arranged in the seawater preheating component; the ion concentration assembly comprises an upper sea water cavity and a lower condensation cavity, the top of the sea water cavity is made of transparent materials, the sea water cavity and the condensation cavity are separated by a hydrophobic membrane for membrane distillation, and the inlet of the sea water cavity is connected with the outlet of the sea water preheating assembly; the lithium extraction assembly comprises a concentrated brine cavity and a lithium chloride cavity below, wherein the top of the concentrated brine cavity is made of transparent materials, an inlet of the concentrated brine cavity is connected with an outlet of the seawater cavity, the concentrated brine cavity is separated from the lithium chloride cavity by a lithium ion transmission layer, and an inlet of the lithium chloride cavity is connected with an outlet of the condensation cavity; and the inlet of the lithium carbonate recovery assembly is connected with the outlet of the lithium chloride cavity. The utility model uses solar energy as the only driving energy, and uses salt difference to recycle electric energy, thereby realizing sustainable lithium extraction with low cost.
Description
Technical Field
The utility model relates to a seawater lithium extraction system, in particular to a seawater lithium extraction system based on solar nanofluid, and belongs to the technical field of lithium extraction.
Background
The existing lithium extraction technology mainly comprises an adsorption method, a reverse osmosis method and an extraction method. The adsorption method consumes the adsorbent and has low adsorption efficiency. Reverse osmosis requires the consumption of high-grade electrical energy as a drive to separate lithium ions. The extraction method has complex operation and large labor investment.
CN 201811133636.8 proposes a method for extracting lithium from brine in salt field, which uses five steps (1) to adsorb and remove magnesium; (2) sectional variable-speed leaching lithium; (3) removing magnesium by ion exchange resin adsorption depth; (4) reverse osmosis; (5) preparation of lithium carbonate to prepare lithium carbonate. This method has the following disadvantages: 1. the whole method is complex in steps, and a whole set of steps needs to consume a large amount of time. 2. Each individual step requires the preparation of a separate device, with a significant cost input. 3. The whole process needs to consume high-grade energy sources such as electric energy.
CN 201611122687.1 proposes a method for extracting lithium from salt lake brine, which comprises the steps of introducing raw material brine saturated or nearly saturated with magnesium ions into a microfiltration device to remove suspended particles, then transferring the raw material brine into an electrodialysis device, and obtaining product liquid through electrodialysis for many times. This method has the following disadvantages: 1. the steps are complicated, and a whole set of steps need to consume a great deal of time. 2. Each individual step requires the preparation of a separate device, with a significant cost input. 3. The electrodialysis process needs to consume high-grade energy sources such as electric energy and the like, and is not lost.
The traditional lithium extraction device is huge, the initial investment is higher, and the energy consumption is high. How to extract lithium element with low cost is a hot problem of the development of lithium extraction nowadays. In recent years, with the development of society and the increase of population, fresh water resources become more and more scarce, and sea water desalination becomes a research hotspot for more and more scholars. The existing sea water desalination mainly comprises thermal sea water desalination and reverse osmosis sea water desalination. The seawater is rich in lithium resources. Solar energy is an inexhaustible renewable energy source, does not produce any pollution to the environment, and is economical and environment-friendly. The research shows that the nano materials such as graphene, silver nano particles and the like can be used as the heat transfer nano fluid of the solar seawater desalination technology, and the basic principle is as follows: the silver nano particles absorb light to form local high temperature and the graphene nano fluid absorbs sunlight to perform dual heating, so that the solution generates steam, and the effect of faster evaporation is achieved, instead of heating all water bodies like boiling. At present, how to further reduce the cost of extracting lithium from the seawater is still a technical key for the development of the technology for extracting lithium from the seawater.
Disclosure of utility model
The utility model aims to provide a seawater lithium extraction system based on solar nanofluid, which utilizes solar energy as the only driving energy to extract the seawater lithium, and the whole device utilizes salt difference to recover electric energy, so that the efficiency is high, and the cost is low, and the lithium can be continuously extracted.
In a first aspect, the present utility model provides a seawater lithium extraction system, comprising:
The top of the seawater preheating component is made of transparent materials, and nano fluid is arranged in the seawater preheating component to absorb solar energy to heat seawater;
The ion concentration assembly comprises at least one concentration unit, each concentration unit comprises a sea water cavity above and a condensation cavity below, the top of the sea water cavity is made of transparent materials, the sea water cavity and the condensation cavity are separated by a hydrophobic membrane for membrane distillation, so that water vapor in the sea water cavity enters the condensation cavity, and an inlet of the sea water cavity is connected with an outlet of the sea water preheating assembly;
The lithium extraction assembly comprises at least one lithium extraction unit, each lithium extraction unit comprises a concentrated brine cavity above and a lithium chloride cavity below, the top of the concentrated brine cavity is made of transparent materials, the inlet of the concentrated brine cavity is connected with the outlet of the seawater cavity, the outlet of the concentrated brine cavity is connected with the inlet of the seawater preheating assembly, the concentrated brine cavity and the lithium chloride cavity are separated by a lithium ion transmission layer, so that lithium ions in the concentrated brine cavity are selectively transmitted to the lithium chloride cavity, and the inlet of the lithium chloride cavity is connected with the outlet of the condensation cavity;
and the inlet of the lithium carbonate recovery component is connected with the outlet of the lithium chloride cavity so as to convert lithium chloride into lithium carbonate and recover the lithium carbonate.
In the seawater lithium extraction system, the lithium extraction assembly further comprises an electric storage device, an electrode is arranged in the lithium chloride cavity, and the electrode, the electric storage device and the strong brine cavity form a loop.
Further, the electric storage device is a storage battery or a capacitor for storing electric charge or electric energy generated by lithium ion transmission;
the electrode is a graphite electrode or a platinum electrode.
Further, a delivery pump is arranged between the seawater preheating component and the seawater cavity, and the delivery pump is powered by the electric storage device;
The whole height of the lithium chloride cavity is lower than that of the condensation cavity, so that fresh water in the condensation cavity enters the lithium chloride cavity under the action of gravity.
In the seawater lithium extraction system, the fins, the ribs or the ribbed plates for cooling are arranged in the condensation cavity.
In the seawater lithium extraction system, the lithium carbonate recovery assembly comprises a sedimentation tank.
In the seawater lithium extraction system, the nanofluid consists of a first component and a second component;
The first component is at least one of activated carbon particles, graphene oxide, reduced graphene oxide and carbon nanotubes;
the second component is at least one of silver nanoparticles and gold nanoparticles;
The mass ratio of the first component to the second component is (100-10): 1.
In the above-mentioned seawater lithium extraction system, the membrane distillation hydrophobic membrane is Polytetrafluoroethylene (PTFE) hydrophobic membrane, polyvinylidene fluoride (PVDF) hydrophobic membrane, or polypropylene (PP) hydrophobic membrane.
In the above seawater lithium extraction system, the lithium ion transport layer is made of a lithium ion liquid film or a lithium ion exchange resin.
In the above-mentioned seawater lithium extraction system, preferably, the seawater lithium extraction system is 1) or 2):
1) The ion concentration component comprises two or more concentration units, the lithium extraction component comprises two or more lithium extraction units, each concentration unit and each lithium extraction unit form a concentration lithium extraction unit, and the concentration lithium extraction units are arranged in parallel;
2) The lithium extraction component comprises two or more lithium extraction units, and the lithium extraction units are arranged in series.
The utility model has the following beneficial effects:
(1) The utility model only uses solar energy as the only energy source to extract lithium ions from the low-lithium-concentration seawater.
(2) The utility model uses the linkage of the nano fluid and the membrane distillation technology to maintain the concentration difference, thereby ensuring the continuous operation of the device.
(3) The whole device utilizes the salt difference to recycle the electric energy, and has high efficiency and low cost and can continuously extract lithium.
(4) The raw materials of the utility model are sea water, and the product is lithium carbonate and high-quality electric energy, thereby achieving the effect of changing waste into valuables.
(5) The utility model has simple structure and can realize low-cost industrial lithium extraction through parallel connection.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a solar nanofluid-based seawater lithium extraction system according to an embodiment of the present utility model;
Fig. 2 is a schematic diagram of the overall structure of a solar nanofluid-based seawater lithium extraction system according to another embodiment of the present utility model, in which three modules are connected in parallel to form a lithium extraction module, so as to facilitate industrial application;
Fig. 3 is a schematic diagram of the overall structure of a solar nanofluid-based seawater lithium extraction system according to another embodiment of the present utility model, in which two lithium extraction modules are connected in series, so that the obtained final lithium chloride solution can be effectively purified.
The reference numerals in the drawings:
100-seawater preheating assembly; 101-activated carbon particles; 102-silver nanoparticles; 103-seawater inlet piping; 104-nanofluidic tubing;
200-ion concentration module; 201-sea water cavity; 202-a condensation chamber; 203-a hydrophobic membrane for membrane distillation; 204-cooling fins; 205-a transfer pump; 206-a fresh water pipeline;
300-lithium extraction component; 301-a concentrated brine cavity; 302-a lithium chloride chamber; 303-a lithium ion transport layer; 304-lithium chloride tubing; 305-an electric storage device; 306-electrode;
400-lithium carbonate recovery assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the system or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Moreover, the use of the terms first, second, etc. to define elements is merely for convenience in distinguishing the elements from each other, and the terms are not specifically meant to indicate or imply relative importance unless otherwise indicated.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The following describes the seawater lithium extraction system provided by the embodiment of the utility model in detail with reference to the accompanying drawings.
As shown in fig. 1, a seawater lithium extraction system according to an embodiment of the present utility model includes a seawater preheating module 100, an ion concentrating module 200, a lithium extraction module 300, and a lithium carbonate recovery module 400. The seawater preheating component 100 has the main function of preheating seawater, the top is made of transparent materials, such as transparent glass, and nano-fluid is arranged in the top to absorb solar energy to heat the seawater. The nanofluid consists of activated carbon particles 101 and silver nanoparticles 102, for example, with a mass ratio of 100:1 to 10:1, and specifically can be determined according to performance requirements and cost, it is understood that the silver nanoparticles 102 can be replaced by gold nanoparticles, and the activated carbon particles 101 can be replaced by carbon nanomaterial such as graphene, graphene oxide, reduced graphene oxide, and carbon nanotubes. The seawater preheating assembly 100 is externally connected with a seawater inlet pipeline 103 and a nanofluid pipeline 104, seawater enters the seawater preheating assembly 100 from the seawater inlet pipeline 103, nanofluid absorbs sunlight to heat the seawater, and nanofluid mixed with the seawater flows out from the nanofluid pipeline 104. The ion concentration assembly 200 comprises an upper sea water chamber 201 and a lower condensation chamber 202, wherein the top of the sea water chamber 201 is made of transparent material, such as transparent glass at the top, and the sea water chamber 201 and the condensation chamber 202 are separated by a hydrophobic membrane 203 for membrane distillation, so that water vapor in the sea water chamber 201 enters the condensation chamber 202. For example, the membrane distillation hydrophobic membrane 203 is a Polytetrafluoroethylene (PTFE) hydrophobic membrane, a polyvinylidene fluoride (PVDF) hydrophobic membrane, or a polypropylene (PP) hydrophobic membrane. The inlet of the seawater chamber 201 is connected to the outlet of the seawater preheating module 100, in particular by means of the nanofluidic tubing 104. A delivery pump 205 is arranged between the seawater preheating component 100 and the seawater cavity 201, nano fluid is driven to flow, the delivery pump 205 is a peristaltic pump, a small pump or a low-energy pump, and the like, and under the action of the delivery pump 205, the nano fluid doped with seawater preheated by the seawater preheating component flowing out of the seawater preheating component 100 enters the seawater cavity 201. Fins, ribs or ribs, such as cooling fins 204, are provided within the condensation chamber 202 for cooling. The lithium extraction assembly 300 comprises an upper concentrated brine cavity 301, a lower lithium chloride cavity 302 and an electric storage device 305, wherein the top of the concentrated brine cavity 301 is made of transparent materials, such as transparent glass at the top, an inlet of the concentrated brine cavity 301 is connected with an outlet of the seawater cavity 201, specifically through a nanofluidic pipeline 104, and an outlet of the concentrated brine cavity 301 is connected with an inlet of the seawater preheating assembly 100, specifically through a nanofluidic pipeline 104. The strong brine cavity 301 and the lithium chloride cavity 302 are separated by a lithium ion transmission layer 303, the lithium ion transmission layer 303 is made of a lithium ion liquid film or lithium ion exchange resin, so that lithium ions in the strong brine cavity 301 are selectively transmitted to the lithium chloride cavity 302, an inlet of the lithium chloride cavity 302 is connected with an outlet of the condensation cavity 202, specifically, an inlet of the lithium chloride cavity 302 is connected with an outlet of the condensation cavity 202 through a fresh water pipeline 206, and nano-fluid after being concentrated by the ion concentration assembly 200 is returned to the seawater preheating assembly 100 after lithium is extracted. An electrode 306 is arranged in the lithium chloride cavity 302, the electrode 306 is a graphite electrode or a platinum electrode, the electrode 306, the electric storage device 305 and the concentrated salt water cavity 301 form a loop, and the electric storage device 305 is a storage battery or a capacitor for storing electric charge or electric energy generated by lithium ion transmission. In the process of extracting lithium, the loop converts the salt difference energy into electric energy to be recycled into the electric storage device 305. The transfer pump 205 is powered by the power storage device 305. The overall height of the lithium chloride chamber 302 is lower than the condensation chamber 202 such that fresh water in the condensation chamber 302 enters the lithium chloride chamber 302 under the force of gravity, and specifically enters the lithium chloride chamber 302 through the fresh water line 206. The lithium carbonate recovery assembly 400, the inlet of the lithium carbonate recovery assembly 400 is connected to the outlet of the lithium chloride chamber 302, specifically by a lithium chloride conduit 304, to convert and recover lithium chloride to lithium carbonate. The lithium carbonate recovery assembly 400 includes a precipitation tank to collect lithium carbonate precipitate. The fixing modes of the components can be fixed by using clamping plates, flange buckles and the like.
The specific implementation method comprises the following steps: the device is started by placing low concentration lithium chloride, such as 0.01ppm to 0.5ppm, and more particularly 0.2ppm, in the lithium chloride chamber 302 prior to operation of the device. When operation starts, seawater is introduced into the seawater preheating component 100 through the seawater inlet pipeline 103, sunlight is absorbed by the component nanofluid, local high temperature is generated by the silver nano particles 102 through the plasmon effect, and the seawater is heated under the action of heat absorption and conductivity of the activated carbon particles. The nanofluid mixed with the seawater is then pumped into the seawater cavity 201 by the delivery pump 205, solar energy is continuously absorbed in the seawater cavity 201, the temperature is continuously increased, the seawater is evaporated by the membrane distillation, the water vapor passes through the hydrophobic membrane 203 for membrane distillation and enters the condensation cavity 202, and the water vapor is condensed into fresh water on the cooling fins 204 and then flows into the lithium chloride cavity 302 to dilute the concentration of lithium chloride. The nanofluid in the seawater cavity 201 flows into the concentrated brine cavity 301 through the nanofluid pipeline 104, continues to absorb heat, and as the temperature continuously rises, lithium ions in the concentrated brine cavity 301 move to the lithium chloride cavity 302 under the driving of the temperature difference and the concentration difference, but due to the selective action of the lithium ion transmission layer 303, only lithium ions can pass through, and as the lithium ions move directionally, generated electric energy is collected through the electric storage device 305 for supplying energy to the conveying pump 205. As the concentration of the lithium chloride solution increases due to the lithium extraction, the concentration difference at two sides of the lithium ion transmission layer 303 is reduced, and lithium ions are supplemented by fresh water in the condensation chamber 202 and are diffused into the lithium carbonate recovery assembly 400 through the lithium chloride pipeline 304, so that the concentration difference at two sides of the lithium ion transmission layer 303 can be continuously maintained, and a lithium extraction driving force is continuously generated. Lithium ions are diffused into the lithium carbonate recovery module 400 by concentration, and carbon dioxide or sodium carbonate is added to the module to obtain lithium carbonate precipitate.
In the whole process, the lithium element adsorption rate can be adjusted by changing the temperature of the nanofluid (adjusting the illumination time) or changing the concentration of two sides of the lithium ion liquid film. The seawater and the flow rate of the current electrode can be controlled by a pump.
In another embodiment of the present utility model, the ion concentrating assembly 200 includes two or more concentrating units, the lithium extracting assembly 300 includes two or more lithium extracting units, each concentrating unit and lithium extracting unit form a concentrated lithium extracting unit, and the concentrated lithium extracting units are arranged in parallel. As shown in fig. 2, the ion concentrating assembly 200 includes a first concentrating unit, a second concentrating unit and a third concentrating unit, the lithium extracting assembly 300 includes a first lithium extracting unit, a second lithium extracting unit and a third lithium extracting unit, the first concentrating unit and the first lithium extracting unit form the first concentrating lithium extracting unit, the second concentrating unit and the second lithium extracting unit form the second concentrating lithium extracting unit, the third concentrating unit and the third lithium extracting unit form the third concentrating unit, and the first lithium extracting concentrating unit, the second lithium extracting concentrating unit and the third lithium extracting concentrating unit are connected in parallel, that is, the first lithium extracting concentrating unit, the second lithium extracting concentrating unit and the third lithium extracting concentrating unit share a nano fluid main pipeline, the main pipeline is split into a plurality of concentrating units, then the concentrated main pipeline enters the corresponding lithium extracting units, the three concentrated lithium extracting units share a lithium chloride main pipeline, all the lithium chloride pipelines are converged into the main pipeline, and the rest connection relations are the same as in fig. 1. According to the embodiment, the two or more concentration lithium extraction units are arranged in parallel, so that the industrialized sea water desalination lithium extraction power generation can be further realized.
In another embodiment of the present utility model, a seawater lithium extraction system is provided, wherein the lithium extraction assembly 300 comprises two or more lithium extraction units, and each lithium extraction unit is serially connected. As shown in fig. 3, the lithium extraction assembly 300 includes a first lithium extraction unit and a second lithium extraction unit, where the first lithium extraction unit and the second lithium extraction unit are arranged in series, that is, an outlet of a concentrated brine cavity of the first lithium extraction unit is connected with an inlet of a concentrated brine cavity of the second lithium extraction unit, an outlet of a lithium chloride cavity of the first lithium extraction unit is connected with an inlet of a lithium chloride cavity of the second lithium extraction unit, and other connection relationships are the same as fig. 1. According to the embodiment, the purity of the lithium product for extracting lithium by the industrial seawater desalination can be further realized through two or more lithium extracting units which are arranged in series.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A solar nanofluid-based seawater lithium extraction system, comprising:
The top of the seawater preheating component is made of transparent materials, and nano fluid is arranged in the seawater preheating component to absorb solar energy to heat seawater;
The ion concentration assembly comprises at least one concentration unit, each concentration unit comprises a sea water cavity above and a condensation cavity below, the top of the sea water cavity is made of transparent materials, the sea water cavity and the condensation cavity are separated by a hydrophobic membrane for membrane distillation, so that water vapor in the sea water cavity enters the condensation cavity, and an inlet of the sea water cavity is connected with an outlet of the sea water preheating assembly;
The lithium extraction assembly comprises at least one lithium extraction unit, each lithium extraction unit comprises a concentrated brine cavity above and a lithium chloride cavity below, the top of the concentrated brine cavity is made of transparent materials, the inlet of the concentrated brine cavity is connected with the outlet of the seawater cavity, the outlet of the concentrated brine cavity is connected with the inlet of the seawater preheating assembly, the concentrated brine cavity and the lithium chloride cavity are separated by a lithium ion transmission layer, so that lithium ions in the concentrated brine cavity are selectively transmitted to the lithium chloride cavity, and the inlet of the lithium chloride cavity is connected with the outlet of the condensation cavity;
and the inlet of the lithium carbonate recovery component is connected with the outlet of the lithium chloride cavity so as to convert lithium chloride into lithium carbonate and recover the lithium carbonate.
2. The solar nanofluid-based seawater lithium extraction system of claim 1, wherein: the lithium extraction component further comprises an electric storage device, an electrode is arranged in the lithium chloride cavity, and the electrode, the electric storage device and the strong brine cavity form a loop.
3. The solar nanofluid-based seawater lithium extraction system of claim 2, wherein: the electric storage device is a storage battery or a capacitor and is used for storing electric charge or electric energy generated by lithium ion transmission;
the electrode is a graphite electrode or a platinum electrode.
4. The solar nanofluid-based seawater lithium extraction system of claim 2, wherein: a delivery pump is arranged between the seawater preheating component and the seawater cavity, and the delivery pump is powered by the electric storage device;
The whole height of the lithium chloride cavity is lower than that of the condensation cavity, so that fresh water in the condensation cavity enters the lithium chloride cavity under the action of gravity.
5. The solar nanofluid-based seawater lithium extraction system of any one of claims 1-2, wherein: fins, ribs or ribbed plates for cooling are arranged in the condensation cavity.
6. The solar nanofluid-based seawater lithium extraction system of any one of claims 1-2, wherein: the lithium carbonate recovery assembly includes a precipitation tank.
7. The solar nanofluid-based seawater lithium extraction system of any one of claims 1-2, wherein: the nanofluid is composed of a first component and a second component;
The first component is at least one of activated carbon particles, graphene oxide, reduced graphene oxide and carbon nanotubes;
The second component is at least one of silver nanoparticles and gold nanoparticles.
8. The solar nanofluid-based seawater lithium extraction system of any one of claims 1-2, wherein: the hydrophobic membrane for membrane distillation is polytetrafluoroethylene hydrophobic membrane, polyvinylidene fluoride hydrophobic membrane or polypropylene hydrophobic membrane.
9. The solar nanofluid-based seawater lithium extraction system of any one of claims 1-2, wherein: the lithium ion transmission layer is made of a lithium ion liquid film or lithium ion exchange resin.
10. The solar nanofluid-based seawater lithium extraction system of any one of claims 1-2, wherein: the seawater lithium extraction system is 1) or 2) as follows:
1) The ion concentration component comprises two or more concentration units, the lithium extraction component comprises two or more lithium extraction units, each concentration unit and each lithium extraction unit form a concentration lithium extraction unit, and the concentration lithium extraction units are arranged in parallel;
2) The lithium extraction component comprises two or more lithium extraction units, and the lithium extraction units are arranged in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322427155.0U CN220907189U (en) | 2023-09-07 | 2023-09-07 | Seawater lithium extraction system based on solar nanofluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322427155.0U CN220907189U (en) | 2023-09-07 | 2023-09-07 | Seawater lithium extraction system based on solar nanofluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220907189U true CN220907189U (en) | 2024-05-07 |
Family
ID=90913999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322427155.0U Active CN220907189U (en) | 2023-09-07 | 2023-09-07 | Seawater lithium extraction system based on solar nanofluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220907189U (en) |
-
2023
- 2023-09-07 CN CN202322427155.0U patent/CN220907189U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Banat et al. | Desalination by a “compact SMADES” autonomous solarpowered membrane distillation unit | |
| Ma et al. | Distributed solar desalination by membrane distillation: current status and future perspectives | |
| CN111003742A (en) | Seawater desalination system for solar photovoltaic waste heat-joule heat gradient utilization | |
| Bouguecha et al. | Small scale desalination pilots powered by renewable energy sources: case studies | |
| He et al. | Application of alternative energy integration technology in seawater desalination | |
| CN102060344B (en) | Multiple-effect membrane distillation method with high-efficiency inner heat recovering function | |
| CN111792693A (en) | Reverse mass transfer solar electricity-water co-production device for driving water supply through siphon effect | |
| Abdallah et al. | Design of an autonomous solar desalination plant using vacuum membrane distillation, the MEDINA project | |
| CN108328831B (en) | Method and equipment for concentrating reverse osmosis strong brine | |
| CN106630359A (en) | Clean energy seawater desalination and salt making system | |
| CN113039008A (en) | System and method for simultaneous power generation and fresh water generation by membrane distillation | |
| Liu et al. | Energetic performance analysis on a membrane distillation integrated with low concentrating PV/T hybrid system | |
| Zhao et al. | Integrated strategy of solar evaporator and steam collector configurations for interfacial evaporation water purification | |
| CN220907189U (en) | Seawater lithium extraction system based on solar nanofluid | |
| CN105461133A (en) | Wind-solar complementary seawater desalination system | |
| CN107213793B (en) | Novel solar energy decompression multiple-effect membrane distillation device | |
| CN102003797A (en) | Device for heating water for life and preparing fresh drinking water by comprehensively utilizing solar energy | |
| CN117210704A (en) | Seawater lithium extraction system and method based on solar nanofluid | |
| CN203593678U (en) | Thermal membrane coupling sea water desalination system | |
| CN206705876U (en) | Clean energy resource desalinization and salt making system | |
| CN108285185A (en) | A kind of modular solar power hollow-fibre membrane fresh-water generator and its desalination method | |
| CN213388198U (en) | High-phosphorus wastewater treatment device based on forward osmosis-membrane distillation technology | |
| CN208292695U (en) | A kind of modular solar power hollow-fibre membrane fresh-water generator | |
| CN112919565A (en) | Solar energy-hot spring-heat pump coupling multistage membrane distillation water treatment system and method | |
| CN111875141A (en) | High ammonia nitrogen wastewater treatment device and method based on parallel flat plate type membrane distillation technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |