CN110212262B - Recycling device and recycling method for electrolyte of aluminum air battery - Google Patents
Recycling device and recycling method for electrolyte of aluminum air battery Download PDFInfo
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- CN110212262B CN110212262B CN201910614055.4A CN201910614055A CN110212262B CN 110212262 B CN110212262 B CN 110212262B CN 201910614055 A CN201910614055 A CN 201910614055A CN 110212262 B CN110212262 B CN 110212262B
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 108
- 238000004064 recycling Methods 0.000 title claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 103
- 238000000926 separation method Methods 0.000 claims abstract description 72
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 68
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 21
- 239000003595 mist Substances 0.000 claims abstract description 13
- 239000002244 precipitate Substances 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 11
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 21
- 239000010935 stainless steel Substances 0.000 claims description 21
- 239000013049 sediment Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910001868 water Inorganic materials 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
- H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hybrid Cells (AREA)
Abstract
The invention relates to the technical field of machinery, in particular to an electrolyte recycling device and recycling method of an aluminum air battery, comprising a solid-liquid separation device, wherein a recycled electrolyte tank is arranged on one side of the solid-liquid separation device, a third connecting pipe is arranged between the recycled electrolyte tank and the solid-liquid separation device, a precipitation collecting box is arranged on the other side of the solid-liquid separation device, an electrolyte liquid storage tank is arranged above the recycled electrolyte tank, a first connecting pipe is connected between the electrolyte liquid storage tank and the solid-liquid separation device, a hydrogen peroxide liquid adding tank is arranged above the precipitation collecting box, a second connecting pipe is arranged on the side face of the hydrogen peroxide liquid adding tank, a branch pipe is arranged at the tail end of the second connecting pipe, and a mist spray nozzle is arranged at the tail end of the branch pipe. The invention utilizes the local rapid acid-base neutralization reaction to generate the aluminum hydroxide precipitate, and the precipitate is immediately and uniformly rinsed out, thereby realizing the rapid separation of the aluminum hydroxide and recycling the electrolyte.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a recycling device and recycling method for electrolyte of an aluminum air battery.
Background
The metal fuel cell is also called as metal composite fuel cell and metal air cell, which is a power generation device using active metals such as iron, calcium, lithium, zinc, magnesium, aluminum and the like as negative electrode energy materials, air or oxygen generates oxidation-reduction reaction at an air electrode, neutral salt water or alkaline sodium hydroxide or potassium hydroxide solution is used as electrolyte, and the electrolyte is added and circulated to trigger to output electric energy. In the running process of the aluminum air battery cell stack, alkaline sodium hydroxide or potassium hydroxide is used as electrolyte, in the running process of the aluminum air battery cell stack, as the running time of the cell stack is increased, the conductivity of the electrolyte is increased from the beginning, the internal resistance is reduced, the cell stack reaches the maximum performance, then the concentration of aluminum hydroxide is saturated, solid precipitation is carried out, the flowing mode of the electrolyte is changed, the aluminum hydroxide is deposited on the part of the aluminum air battery cell, the equilibrium of the cell is reduced, the local current has the recharging phenomenon, the viscosity of the electrolyte is increased, the internal resistance of the cell stack is increased, the performance of the cell stack is seriously reduced as a whole, the cell stack is blocked by the deposition of local aluminum hydroxide along with the time, the cell stack is broken due to expansion, and the cell stack is irreversibly stopped, so that the timely and rapid separation of aluminum hydroxide precipitation in the electrolyte system becomes a key technology for restricting the commercialization of the aluminum air battery cell.
At present, the domestic use condition of the electrolyte for the aluminum air battery is mainly that when the performance of a galvanic pile is reduced to a certain degree, a new electrolyte is replaced, and few researches on timely separation of aluminum hydroxide precipitation are reported. In view of this, we propose a recycling device and recycling method for electrolyte of aluminum-air batteries.
Disclosure of Invention
The invention aims to provide a recycling device and a recycling method for electrolyte of an aluminum-air battery, so as to solve the problems in the background art.
In order to achieve the above object, the present invention provides the following technical solutions:
The utility model provides an aluminium air battery electrolyte circulation recycle device, includes solid-liquid separation device, one side of solid-liquid separation device is equipped with retrieves the electrolyte case, be equipped with the third connecting tube between retrieving electrolyte case and the solid-liquid separation device, the opposite side of solid-liquid separation device is equipped with deposits the collecting box, retrieve electrolyte case top and be equipped with the electrolyte liquid reserve tank, be connected with first connecting tube between electrolyte liquid reserve tank and the solid-liquid separation device, the top of depositing the collecting box is equipped with hydrogen peroxide solution liquid feeding case, the side of hydrogen peroxide solution liquid feeding case is equipped with the second connecting tube, the end of second connecting tube is equipped with the branch pipe, the end of branch pipe is equipped with vaporific shower nozzle.
As the preferable mode of the invention, the solid-liquid separation device comprises a separation box body, a stainless steel net disc is arranged in the separation box body, a liquid inlet and a liquid outlet are arranged on the side face of the separation box body, the liquid inlet is communicated with the tail end of the first connecting pipe, the liquid outlet is communicated with the tail end of the third connecting pipe, and a lifting mechanism is arranged on the separation box body.
As the preferable mode of the invention, the lifting mechanism comprises a screw rod arranged at one end of the separation box body and a guide rod arranged at the other end of the separation box body, wherein a screw sleeve is sleeved on the screw rod, the screw sleeve is in threaded connection with the screw rod, a bearing is sleeved on the screw sleeve, a sleeve is sleeved on the guide rod, and the lifting mechanism further comprises two connecting rods respectively connected with two ends of the stainless steel net disc.
As the preferable mode of the invention, the bottom end of the electrolyte liquid storage tank is provided with a first bracket, the electrolyte liquid storage tank is supported on the ground through the first bracket, the bottom end of the hydrogen peroxide liquid adding tank is provided with a second bracket, and the hydrogen peroxide liquid adding tank is supported on the ground through the second bracket.
Preferably, one end of the first connecting pipe extends into the electrolyte liquid storage tank, the other end of the first connecting pipe extends into the separation tank, and the first connecting pipe is provided with a first one-way valve.
As the preference of the invention, one end of the second connecting pipe extends into the hydrogen peroxide liquid adding box, the other end is communicated with the branch pipe, the second connecting pipe is provided with a third one-way valve and an air compressor, the branch pipe is Y-shaped, and the two tail ends of the branch pipe are respectively communicated with the mist spray heads.
Preferably, one end of the third connecting pipe extends into the electrolyte recycling tank, the other end of the third connecting pipe extends into the separation tank, and the second one-way valve is arranged on the third connecting pipe.
On the other hand, the invention also provides a recycling method of the electrolyte of the aluminum-air battery, which comprises the following steps:
step one, collecting electrolyte with performance reduced after running for a period of time into an electrolyte liquid storage tank, opening a first one-way valve to enable the electrolyte to flow into a solid-liquid separation device, closing a second one-way valve and a third one-way valve, and controlling the height of a liquid level to be 50mm higher than the inner surface of a stainless steel net disc;
Step two, 3/4 of 10%30% hydrogen peroxide by volume is injected into the hydrogen peroxide liquid adding box;
Thirdly, the liquid level of the solid-liquid separation device is kept static for 10min, so that the electrolyte is not swirled any more, an air compressor and a third one-way valve are opened once, hydrogen peroxide is injected into a water layer on the surface of the electrolyte through a mist spray head, the time is controlled at 40s, and then the third one-way valve and the air compressor are closed;
and fourthly, pulling up the stainless steel net disc at a constant speed, and transferring the sediment into a sediment collection box. Stirring the electrolyte in the solid-liquid separation device after the operation to ensure that the concentration of the electrolyte is uniform;
stirring electrolyte in the solid-liquid separation device, standing for 10min, lowering the stainless steel mesh plate to the position of 50mm of the liquid level, and spraying hydrogen peroxide again to react with metaaluminate ions, and uniformly transferring aluminum hydroxide precipitate;
Step six, after separating the aluminum hydroxide precipitate for 4 times according to the steps, keeping a liquid inlet first one-way valve in the solid-liquid separation device closed, and opening a second one-way valve to enable the separated electrolyte to flow into a recovered electrolyte tank, and separating the aluminum hydroxide precipitate according to the operations to obtain a brand new electrolyte containing hydrogen peroxide;
and step seven, reintroducing the electrolyte containing hydrogen peroxide in the recovered electrolyte tank into the aluminum air battery system for recycling.
Compared with the prior art, the invention has the beneficial effects that:
The invention utilizes the local rapid acid-base neutralization reaction to generate the aluminum hydroxide precipitate, and the generated precipitate is immediately and uniformly rinsed out, thereby realizing the solid-liquid separation of the aluminum hydroxide. The acid is hydrogen peroxide (H 2O2) with strong oxidizing property, which is different from other acid, acid radical ions are introduced into the electrolyte, so that the performance of the electrolyte is affected, and the hydrogen peroxide can react with metaaluminate ions to generate sediment, water and oxygen, aluminum hydroxide sediment is generated locally and rapidly, the aluminum hydroxide sediment can be separated out under the condition of not stirring the electrolyte, and the oxygen generated by the reaction can increase the oxygen content in the electrolyte and can be absorbed by the aluminum hydroxide sediment to suspend, so that the solid-liquid separation is facilitated. Residual hydrogen peroxide in the recovered electrolyte can be decomposed by the catalyst in the air pole piece, so that the oxygen content in the electrolyte around the catalyst is improved, and the performance of the aluminum air battery is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a solid-liquid separation device according to the present invention;
FIG. 3 is a schematic view of a lifting mechanism according to the present invention.
In the figure: electrolyte liquid reserve tank 1, first check valve 2, retrieve electrolyte tank 3, second check valve 4, solid-liquid separation device 5, separation box 501, stainless steel net dish 502, inlet 503, liquid outlet 504, hoist mechanism 505, screw 5051, swivel 5052, bearing 5053, connecting rod 5054, sleeve 5055, guide bar 5056, third check valve 6, air compressor 7, hydrogen peroxide solution adding tank 8, deposit collecting box 9, first connecting pipe 10, first support 11, second support 12, second connecting pipe 13, branch pipe 14, vaporific shower nozzle 15, third connecting pipe 16.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, in one aspect, the present invention provides a technical solution:
The utility model provides an aluminium air battery electrolyte circulation recycle device, including solid-liquid separation device 5, one side of solid-liquid separation device 5 is equipped with retrieves electrolyte case 3, be equipped with third connecting tube 16 between retrieving electrolyte case 3 and the solid-liquid separation device 5, the opposite side of solid-liquid separation device 5 is equipped with deposits collecting box 9, it is equipped with electrolyte liquid reserve tank 1 to retrieve electrolyte case 3 top, be connected with first connecting tube 10 between electrolyte liquid reserve tank 1 and the solid-liquid separation device 5, the top of depositing collecting box 9 is equipped with hydrogen peroxide solution liquid feeding case 8, the side of hydrogen peroxide solution liquid feeding case 8 is equipped with second connecting tube 13, the end of second connecting tube 13 is equipped with branch pipe 14, the end of branch pipe 14 is equipped with vaporific shower nozzle 15.
In this embodiment, the solid-liquid separation device 5 includes a separation box 501, a stainless steel mesh plate 502 is disposed inside the separation box 501, a liquid inlet 503 and a liquid outlet 504 are disposed on a side surface of the separation box 501, the liquid inlet 503 is communicated with an end of the first connecting pipe 10, the liquid outlet 504 is communicated with an end of the third connecting pipe 16, and a lifting mechanism 505 is disposed on the separation box 501.
In this embodiment, the lifting mechanism 505 includes a screw rod 5051 installed at one end of the separation housing 501 and a guide rod 5056 installed at the other end of the separation housing 501, a threaded sleeve 5052 is sleeved on the screw rod 5051, the screw sleeve 5052 is in threaded connection with the screw rod 5051, a bearing 5053 is sleeved on the threaded sleeve 5052, a sleeve 5055 is sleeved on the guide rod 5056, and the lifting mechanism 505 further includes two connecting rods 5054 respectively welded and fixed at two ends of the stainless steel net disc 502.
It should be noted that, the separation box 501 and the screw 5051 and the separation box 501 and the guide rod 5056 are both welded and fixed, the inner ring of the bearing 5053 and the swivel 5052 are welded and fixed, the outer ring of the bearing 5053 and one of the connecting rods 5054 are welded and fixed, the tail end of the other connecting rod 5054 and the sleeve 5055 are welded and fixed, the surface of the guide rod 5056 is smooth, the sleeve 5055 can freely move up and down on the guide rod 5056, when the stainless steel net plate 502 needs to be lifted or lowered, the swivel 5052 is manually operated to rotate the swivel 5052, due to the threaded connection between the swivel 5052 and the screw 5051, the swivel 5052 can necessarily move up and down while the swivel 5053 is rotated, and due to the existence of the bearing 5053, the swivel 5052 can not drive the stainless steel net plate 502 to rotate while the swivel 5052 can drive the stainless steel net plate 502 to synchronously move up and down when the swivel 5052 moves up and down, and put in or take out the stainless steel net plate 502 can be well realized by the method.
In this embodiment, the bottom of electrolyte liquid reserve tank 1 is equipped with first support 11, and electrolyte liquid reserve tank 1 supports subaerial through first support 11, and the bottom of hydrogen peroxide solution feeding tank 8 is equipped with second support 12, and hydrogen peroxide solution feeding tank 8 supports subaerial through second support 12.
In this embodiment, one end of the first connecting tube 10 extends into the electrolyte tank 1, the other end extends into the separation tank 501, and the first connecting tube 10 is provided with the first check valve 2.
In this embodiment, one end of the second connecting tube 13 extends into the hydrogen peroxide solution adding tank 8, the other end is communicated with the branch tube 14, the second connecting tube 13 is provided with the third check valve 6 and the air compressor 7, the branch tube 14 is in a Y shape, two ends of the branch tube 14 are respectively communicated with the mist spray heads 15, wherein the mist spray heads 15 are positioned right above the stainless steel net plate 502, and the mist spray covers the electrolyte.
In this embodiment, one end of the third connecting tube 16 extends into the electrolyte recovery tank 3, the other end extends into the separation tank 501, and the second check valve 4 is disposed on the third connecting tube 16.
On the other hand, the invention also provides a recycling method of the electrolyte of the aluminum-air battery, which comprises the following steps:
Step one, collecting electrolyte with performance reduced after running for a period of time into an electrolyte liquid storage tank 1, opening a first one-way valve 2 to enable the electrolyte to flow into a solid-liquid separation device 5, closing a second one-way valve 4 and a third one-way valve 6, and controlling the height of the liquid level to be 50mm higher than the inner surface of a stainless steel net disc 502.
And step two, 3/4 of 30% hydrogen peroxide is injected into the hydrogen peroxide liquid adding box 8.
And thirdly, standing the liquid level of the solid-liquid separation device 5 for 10min to ensure that electrolyte is not swirled any more, opening the air compressor 7 and the third one-way valve 6 once, enabling hydrogen peroxide to be injected into a water layer on the surface of the electrolyte through the mist spray head 15 in a mist mode, controlling the time at 40s, and then closing the third one-way valve 6 and the air compressor 7.
And step four, pulling up the stainless steel net plate 502 at a constant speed, and transferring the sediment into the sediment collection box 9. After this operation, the electrolyte in the solid-liquid separation device 5 is stirred to make the electrolyte concentration uniform.
And fifthly, stirring the electrolyte in the solid-liquid separation device 5, standing for 10min, lowering the stainless steel mesh plate 502 to the position of 50mm of the liquid level, and spraying hydrogen peroxide again to react with metaaluminate ions, so as to uniformly transfer aluminum hydroxide precipitation.
And step six, after separating the aluminum hydroxide precipitate for 4 times according to the steps, keeping the first one-way valve 2 of the liquid inlet in the solid-liquid separation device 5 closed, and opening the second one-way valve 4 to enable the separated electrolyte to flow into the recovered electrolyte tank 3, and separating the aluminum hydroxide precipitate according to the operations to obtain the electrolyte containing hydrogen peroxide.
And step seven, reintroducing the electrolyte containing hydrogen peroxide in the recovered electrolyte tank 3 into the aluminum air battery system for recycling.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides an aluminium air battery electrolyte circulation recycle device, includes solid-liquid separation device (5), its characterized in that: one side of the solid-liquid separation device (5) is provided with a recovered electrolyte tank (3), a third connecting pipe (16) is arranged between the recovered electrolyte tank (3) and the solid-liquid separation device (5), the other side of the solid-liquid separation device (5) is provided with a precipitation collecting box (9), an electrolyte liquid storage tank (1) is arranged above the recovered electrolyte tank (3), a first connecting pipe (10) is connected between the electrolyte liquid storage tank (1) and the solid-liquid separation device (5), a hydrogen peroxide liquid adding tank (8) is arranged above the precipitation collecting box (9), a second connecting pipe (13) is arranged on the side surface of the hydrogen peroxide liquid adding tank (8), a branch pipe (14) is arranged at the tail end of the second connecting pipe (13), and a mist spray head (15) is arranged at the tail end of the branch pipe (14);
The solid-liquid separation device (5) comprises a separation box body (501), a stainless steel net disc (502) is arranged in the separation box body (501), a liquid inlet (503) and a liquid outlet (504) are formed in the side face of the separation box body (501), the liquid inlet (503) is communicated with the tail end of the first connecting pipe (10), the liquid outlet (504) is communicated with the tail end of the third connecting pipe (16), and a lifting mechanism (505) is arranged on the separation box body (501);
The lifting mechanism (505) comprises a screw rod (5051) arranged at one end of the separation box body (501) and a guide rod (5056) arranged at the other end of the separation box body (501), a threaded sleeve (5052) is sleeved on the screw rod (5051), the screw rod and the threaded sleeve are in threaded connection, a bearing (5053) is sleeved on the threaded sleeve (5052), a sleeve (5055) is sleeved on the guide rod (5056), and the lifting mechanism (505) further comprises two connecting rods (5054) respectively connected to two ends of the stainless steel net disc (502).
2. The aluminum-air battery electrolyte recycling device according to claim 1, wherein: the bottom of electrolyte liquid reserve tank (1) is equipped with first support (11), electrolyte liquid reserve tank (1) is supported subaerial through first support (11), the bottom of hydrogen peroxide solution liquid feeding case (8) is equipped with second support (12), hydrogen peroxide solution liquid feeding case (8) is supported subaerial through second support (12).
3. The aluminum-air battery electrolyte recycling device according to claim 1, wherein: one end of the first connecting pipe (10) stretches into the electrolyte liquid storage tank (1), the other end stretches into the separation tank body (501), and a first one-way valve (2) is arranged on the first connecting pipe (10).
4. The aluminum-air battery electrolyte recycling device according to claim 1, wherein: one end of the second connecting pipe (13) stretches into the hydrogen peroxide solution adding tank (8), the other end of the second connecting pipe is communicated with the branch pipe (14), a third one-way valve (6) and an air compressor (7) are arranged on the second connecting pipe (13), the branch pipe (14) is Y-shaped, and two tail ends of the branch pipe (14) are respectively communicated with the mist spray head (15).
5. The aluminum-air battery electrolyte recycling device according to claim 1, wherein: one end of the third connecting pipe (16) stretches into the electrolyte recycling tank (3), the other end of the third connecting pipe stretches into the separation tank body (501), and the third connecting pipe (16) is provided with a second one-way valve (4).
6. The aluminum-air battery electrolyte recycling device according to claim 1, wherein: the number of the mist spray heads (15) is more than 2, and atomized hydrogen peroxide fully covers the upper surface of the electrolyte.
7. A recycling method of an electrolyte of an aluminum-air battery is characterized by comprising the following steps: the method comprises the following steps:
Step one, collecting electrolyte with reduced performance after running for a period of time into an electrolyte liquid storage tank (1), opening a first one-way valve (2) to enable the electrolyte to flow into a solid-liquid separation device (5), closing a second one-way valve (4) and a third one-way valve (6), and controlling the height of a liquid level to be 50mm higher than the inner surface of a stainless steel net disc (502);
step two, 10% -30% hydrogen peroxide in 3/4 volume is injected into the hydrogen peroxide liquid adding box (8);
Thirdly, the liquid level of the solid-liquid separation device (5) is static for 10min, so that electrolyte is not swirled any more, an air compressor (7) and a third one-way valve (6) are opened once, hydrogen peroxide is injected into a water layer on the surface of the electrolyte through a mist spray head (15) in a mist mode, the time is controlled to be 40s, and then the third one-way valve (6) and the air compressor (7) are closed;
Step four, pulling up the stainless steel net disc (502) at a constant speed, transferring the sediment into the sediment collection box (9), and stirring the electrolyte in the solid-liquid separation device (5) after the operation to ensure that the concentration of the electrolyte is uniform;
Stirring the electrolyte in the solid-liquid separation device (5), standing for 10min, lowering the stainless steel mesh plate (502) to the position of 50mm of the liquid level, and spraying hydrogen peroxide again to react with metaaluminate ions, and transferring aluminum hydroxide precipitation at a constant speed;
Step six, after separating the aluminum hydroxide precipitate for 4 times according to the steps, keeping a liquid inlet first one-way valve (2) in a solid-liquid separation device (5) closed, and opening a second one-way valve (4) to enable the separated electrolyte to flow into a recovered electrolyte tank (3), and separating the aluminum hydroxide precipitate according to the operations to obtain the electrolyte containing hydrogen peroxide;
And step seven, reintroducing the electrolyte containing hydrogen peroxide in the recovered electrolyte tank (3) into the aluminum air battery system for recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614055.4A CN110212262B (en) | 2019-07-09 | 2019-07-09 | Recycling device and recycling method for electrolyte of aluminum air battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614055.4A CN110212262B (en) | 2019-07-09 | 2019-07-09 | Recycling device and recycling method for electrolyte of aluminum air battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110212262A CN110212262A (en) | 2019-09-06 |
| CN110212262B true CN110212262B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910614055.4A Active CN110212262B (en) | 2019-07-09 | 2019-07-09 | Recycling device and recycling method for electrolyte of aluminum air battery |
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| CN102576918A (en) * | 2009-07-30 | 2012-07-11 | 米尔布鲁克铅再生科技有限公司 | Reclaiming of lead in form of high purity lead compound from recovered electrode paste slime of dismissed lead batteries and/or of lead minerals |
| KR20120119228A (en) * | 2011-04-20 | 2012-10-31 | 삼성전기주식회사 | Metal air battery and method for preparing the same |
| US8962197B2 (en) * | 2011-08-02 | 2015-02-24 | Phinergy, Ltd. | Electrolyte system for metal-air batteries and methods of use thereof |
| JP2013243118A (en) * | 2012-04-26 | 2013-12-05 | Nissan Motor Co Ltd | Metal air battery, and method for recovering metal from used metal air battery |
| DE102013108375A1 (en) * | 2013-01-31 | 2014-07-31 | Thomas König | Process for the preparation of a pickling and / or anodizing bath and anodizing arrangement |
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| CN208226043U (en) * | 2018-06-06 | 2018-12-11 | 中南大学 | The recovery system of aluminium in aluminium-air cell electrolyte |
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