CN110882629A - Alcohol-containing waste liquid comprehensive recycling combination equipment in lithium battery production process - Google Patents
Alcohol-containing waste liquid comprehensive recycling combination equipment in lithium battery production process Download PDFInfo
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- CN110882629A CN110882629A CN201811051129.XA CN201811051129A CN110882629A CN 110882629 A CN110882629 A CN 110882629A CN 201811051129 A CN201811051129 A CN 201811051129A CN 110882629 A CN110882629 A CN 110882629A
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- 239000007788 liquid Substances 0.000 title claims abstract description 143
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000002699 waste material Substances 0.000 title claims abstract description 74
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000000909 electrodialysis Methods 0.000 claims abstract description 20
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 16
- 239000010941 cobalt Substances 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000005342 ion exchange Methods 0.000 claims description 132
- 238000003860 storage Methods 0.000 claims description 58
- 238000001223 reverse osmosis Methods 0.000 claims description 47
- 229910001416 lithium ion Inorganic materials 0.000 claims description 45
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 43
- 229910001453 nickel ion Inorganic materials 0.000 claims description 41
- 229910001429 cobalt ion Inorganic materials 0.000 claims description 35
- 238000003795 desorption Methods 0.000 claims description 35
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical group [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 claims description 33
- 238000002156 mixing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 19
- 238000001179 sorption measurement Methods 0.000 abstract description 19
- 150000002500 ions Chemical class 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 7
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004821 distillation Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/04—Feed pretreatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/422—Electrodialysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/54—Controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/011—Ion-exchange processes in general; Apparatus therefor using batch processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/14—Controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
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Abstract
The invention relates to a comprehensive recycling combination device for alcohol-containing waste liquid in the production process of lithium batteries. The method applies the electrodialysis technology and the ion adsorption technology to the comprehensive recycling of the alcohol-containing waste liquid in the production process of the lithium battery, can recycle lithium, nickel, cobalt and other ions in the alcohol-containing waste liquid on the basis of fully recycling the alcohol solution, and has the advantages of high separation efficiency, continuous operation and low energy consumption.
Description
Technical Field
The invention relates to the field of comprehensive recovery of organic waste liquid, in particular to a combined device for comprehensively recovering and utilizing alcohol-containing waste liquid in the production process of a lithium battery.
Background
The alcohol solution is a very important organic chemical raw material and is widely applied to industrial production. Taking ethanol as an example, ethanol is used as a dispersant in a large amount in the production process of lithium ion batteries, and a battery anode material and a ternary element are dispersed and then coated. A large amount of ethanol waste liquid is generated in the production process of the lithium ion battery. Along with the development and utilization of new energy automobiles and green energy, the capacity of the lithium ion battery is rapidly increased, and the pressure of the generated alcohol-containing waste liquid on the environment is increased day by day.
Methanol and ethanol are dangerous chemicals in the famous records of dangerous chemicals, belong to flammable and explosive liquids, and have potential dangers of flammability and explosiveness in the using and storing processes. The main component of the alcohol-containing waste liquid in the lithium battery industry is alcohol solution, and simultaneously, the alcohol-containing waste liquid also contains a small amount of lithium, cobalt, nickel and other ions. If a large amount of waste liquid containing alcohol is directly discharged, the environment is affected, but if the waste liquid containing alcohol is stored in a large amount, the danger of flammability and explosiveness exists. Therefore, the comprehensive recycling of the alcohol-containing waste liquid becomes a difficult problem in the lithium battery industry. The existing method for treating the alcohol-containing waste liquid is a traditional distillation and rectification method, and the method needs special equipment, and has the disadvantages of large required factory building area, large investment, complex process and higher required temperature in the treatment process. Although the method can separate and recover the alcohols in the waste liquid, the method can not realize the recovery of the valuable ions in the waste liquid, and the method can not realize the continuous separation of the alcohol-containing waste liquid.
Disclosure of Invention
The invention aims to solve the technical problem of providing the comprehensive recycling combination equipment for the alcohol-containing waste liquid in the lithium battery production process, which has the advantages of simple operation, easy control, stable process, high separation efficiency and continuous operation.
In order to solve the problems, the invention provides a combined device for comprehensively recycling alcohol-containing waste liquid in the production process of lithium batteries, which is characterized in that: the device comprises an alcohol-containing waste liquid pretreatment system, a circulating electrodialysis-reverse osmosis system and an ion exchange system which are connected together.
The pretreatment system for the alcohol-containing waste liquid comprises an alcohol-containing waste liquid storage tank, a precision filter and an alcohol-containing waste liquid buffer tank; the upper end of the precision filter is connected with the alcohol-containing waste liquid storage tank through a pipeline I, the lower end of the precision filter is connected with the alcohol-containing waste liquid buffer tank, and the alcohol-containing waste liquid buffer tank is connected with the circulating electrodialysis-reverse osmosis system.
The circulating electrodialysis-reverse osmosis system comprises a mixing tank, an electrodialyzer, an electrodialysis concentrated solution buffer tank, an alcohol solution storage tank, a reverse osmosis device and a reverse osmosis concentrated solution buffer tank; the upper end of the electrodialyzer is sequentially connected with the mixing tank and an alcohol-containing waste liquid buffer tank in the alcohol-containing waste liquid pretreatment system, and the lower end of the electrodialyzer is respectively connected with the alcohol liquid storage tank and the electrodialysis concentrated liquid buffer tank through a pipeline II; one end of the electrodialysis concentrated solution buffer tank is connected with the mixing tank through a flow control pump, and the other end of the electrodialysis concentrated solution buffer tank is sequentially connected with the reverse osmosis device and the reverse osmosis concentrated solution buffer tank; and the reverse osmosis concentrated solution buffer tank is connected with the ion exchange system.
The ion exchange system comprises a lithium ion exchange device I, a cobalt ion exchange device I, a nickel ion exchange device I, a lithium ion exchange device II, a cobalt ion exchange device II, a nickel ion exchange device II, a desorption liquid storage tank, a lithium liquid storage tank, a cobalt liquid storage tank and a nickel liquid storage tank; the upper end of the lithium ion exchange device I is connected with a reverse osmosis concentrated solution buffer tank in the circulating electrodialysis-reverse osmosis system through a concentrated solution intelligent pump I, and the lower end of the lithium ion exchange device I is sequentially connected with the cobalt ion exchange device I and the nickel ion exchange device I; the lower end of the nickel ion exchange device I is connected with an alcohol solution storage tank in the circulating electrodialysis-reverse osmosis system; the upper end of the lithium ion exchange device II is connected with the reverse osmosis concentrated solution buffer tank through a concentrated solution intelligent pump II, and the lower end of the lithium ion exchange device II is sequentially connected with the cobalt ion exchange device II and the nickel ion exchange device II; the lower end of the nickel ion exchange device II is connected with the alcohol liquid storage tank; the desorption liquid storage tank is connected with the lithium ion exchange device I, the cobalt ion exchange device I and the nickel ion exchange device I in parallel through a desorption liquid intelligent pump I; the desorption liquid storage tank is connected with the lithium ion exchange device II, the cobalt ion exchange device II and the nickel ion exchange device II in parallel through a desorption liquid intelligent pump II; the lithium ion exchange device I and the lithium ion exchange device II are respectively connected with the lithium liquid storage tank through a pipeline III; the cobalt ion exchange device I and the cobalt ion exchange device II are respectively connected with the cobalt liquid storage tank through a pipeline IV; and the nickel ion exchange device I and the nickel ion exchange device II are respectively connected with the nickel liquid storage tank through pipelines V.
Compared with the prior art, the invention has the following advantages:
1. the method applies the electrodialysis technology and the ion exchange technology to the comprehensive recovery process of the alcohol-containing waste liquid, can realize the recovery and utilization of various substances in the alcohol-containing waste liquid at room temperature, can solve the potential safety hazard of flammability and explosiveness in the storage process of the alcohol-containing waste liquid, and can realize the comprehensive utilization of the waste liquid. Compared with the traditional rectification mode of the alcohol-containing waste liquid, the device has the characteristics of energy conservation, environmental protection and high efficiency.
2. The invention adopts a circulating electrodialysis-reverse osmosis system with partial reflux, and can control the concentration of each component of the alcohol-containing waste liquid entering the electrodialyzer by adjusting the circulation ratio in the running process of the equipment, thereby realizing the continuous and stable separation and recovery of the alcohol-containing waste liquid in different batches under the condition of fluctuation of the components of the waste liquid. Compared with the existing electrodialyzer, the device can realize continuous electrodialysis treatment of the alcohol-containing waste liquid, and has stable treatment process and accurate treatment result.
3. The invention adopts the parallel connection mode of ion exchange adsorption and ion exchange desorption in the ion exchange system, and can realize that one set of pipeline carries out ion exchange adsorption and the other set of pipeline carries out ion exchange desorption through the intelligent control of the concentrated solution intelligent pump and the desorption solution intelligent pump. Compared with the traditional ion exchange equipment, the invention can realize the continuous separation and recovery of various valuable ions in the electrodialysis concentrated solution.
4. Compared with the traditional distillation and rectification equipment, the invention has the advantages of simple operation, easy control, stable process, high separation efficiency and continuous operation.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1-an alcohol-containing waste liquid pretreatment system; 11-a storage tank for alcohol-containing waste liquid; 12-a precision filter; 13-alcohol-containing waste liquid buffer tank; 2-a circulating electrodialysis-reverse osmosis system; 21-a mixing tank; 22-electrodialyser; 23-electrodialysis concentrated solution buffer tank; 24-alcohol liquid storage tank; 25-a flow control pump; 26-a reverse osmosis unit; 27-reverse osmosis concentrated solution buffer tank; 3-an ion exchange system; 31-concentrated solution intelligent pump I; 32-lithium ion exchange device I; 33-cobalt ion exchange unit I; 34-nickel ion exchange unit I; 35-concentrated solution intelligent pump II; 36-lithium ion exchange unit II; 37-cobalt ion exchange unit II; 38-nickel ion exchange unit II; 39-a desorption liquid storage tank; 310-intelligent pump I for desorption liquid; 311-desorption liquid intelligent pump II; 312-a lithium liquid storage tank; 313-cobalt liquid storage tank; 314-nickel liquid storage tank.
Detailed Description
As shown in figure 1, the comprehensive recycling combination equipment for alcohol-containing waste liquid in the production process comprises an alcohol-containing waste liquid pretreatment system 1, a circulating electrodialysis-reverse osmosis system 2 and an ion exchange system 3 which are connected together.
The pretreatment system 1 for the alcohol-containing waste liquid comprises an alcohol-containing waste liquid storage tank 11, a precision filter 12 and an alcohol-containing waste liquid buffer tank 13; the upper end of the precision filter 12 is connected with an alcohol-containing waste liquid storage tank 11 through a pipeline I, the lower end of the precision filter is connected with an alcohol-containing waste liquid buffer tank 13, and the alcohol-containing waste liquid buffer tank 13 is connected with the circulating electrodialysis-reverse osmosis system 2.
The circulating electrodialysis-reverse osmosis system 2 comprises a mixing tank 21, an electrodialyzer 22, an electrodialysis concentrated solution buffer tank 23, an alcohol solution storage tank 24, a reverse osmosis device 26 and a reverse osmosis concentrated solution buffer tank 27; the upper end of the electrodialyzer 22 is connected with the mixing tank 21 and the alcohol-containing waste liquid buffer tank 13 in the alcohol-containing waste liquid pretreatment system 1 in sequence, and the lower end thereof is connected with the alcohol liquid storage tank 24 and the electrodialysis concentrated liquid buffer tank 23 through the pipeline II respectively; one end of the electrodialysis concentrated solution buffer tank 23 is connected with the mixing tank 21 through a flow control pump 25, and the other end is sequentially connected with a reverse osmosis device 26 and a reverse osmosis concentrated solution buffer tank 27; the reverse osmosis concentrated solution buffer tank 27 is connected with the ion exchange system 3.
The ion exchange system 3 comprises a lithium ion exchange device I32, a cobalt ion exchange device I33, a nickel ion exchange device I34, a lithium ion exchange device II 36, a cobalt ion exchange device II 37, a nickel ion exchange device II 38, a desorption liquid storage tank 39, a lithium liquid storage tank 312, a cobalt liquid storage tank 313 and a nickel liquid storage tank 314; the upper end of the lithium ion exchange device I32 is connected with a reverse osmosis concentrated solution buffer tank 27 in the circulating electrodialysis-reverse osmosis system 2 through a concentrated solution intelligent pump I31, and the lower end of the lithium ion exchange device I32 is sequentially connected with a cobalt ion exchange device I33 and a nickel ion exchange device I34; the lower end of the nickel ion exchange device I34 is connected with an alcohol solution storage tank 24 in the circulating electrodialysis-reverse osmosis system 2; the upper end of the lithium ion exchange device II 36 is connected with the reverse osmosis concentrated solution buffer tank 27 through a concentrated solution intelligent pump II 35, and the lower end of the lithium ion exchange device II is sequentially connected with a cobalt ion exchange device II 37 and a nickel ion exchange device II 38; the lower end of the nickel ion exchange device II 38 is connected with the alcohol liquid storage tank 24; the desorption liquid storage tank 39 is connected in parallel with the lithium ion exchange device I32, the cobalt ion exchange device I33 and the nickel ion exchange device I34 through a desorption liquid intelligent pump I310; the desorption liquid storage tank 39 is connected in parallel with the lithium ion exchange device II 36, the cobalt ion exchange device II 37 and the nickel ion exchange device II 38 through a desorption liquid intelligent pump II 311; the lithium ion exchange device I32 and the lithium ion exchange device II 36 are respectively connected with the lithium liquid storage tank 312 through a pipeline III; the cobalt ion exchange device I33 and the cobalt ion exchange device II 37 are respectively connected with a cobalt liquid storage tank 313 through a pipeline IV; the nickel ion exchange device I34 and the nickel ion exchange device II 38 are respectively connected with a nickel liquid storage tank 314 through pipelines V.
An alcohol-containing waste liquid containing lithium ions, cobalt ions and nickel ions in the production process of a lithium ion battery is conveyed to a precision filter 12 from an alcohol-containing waste liquid storage tank 11 in an alcohol-containing waste liquid pretreatment system 1 through an infusion pump, and the filtered alcohol-containing waste liquid meeting the requirements is conveyed to an alcohol-containing waste liquid buffer tank 13 through the infusion pump and conveyed to a circulating electrodialysis-reverse osmosis system 2 through the infusion pump.
The alcohol-containing waste liquid can be recycled and various metal ions can be concentrated by the circulating electrodialysis-reverse osmosis system 2. The specific process is as follows: the alcohol-containing waste liquid in the alcohol-containing waste liquid buffer tank 13 is transferred to the mixing tank 21 by the transfer pump, and after being circulated with the reflux liquid, is transferred to the electrodialyzer 22 by the transfer pump. After passing through the electrodialyzer 22, the lithium, cobalt, nickel, and other ion concentrates in the alcohol-containing waste liquid are transferred from the transfer pump to the electrodialysis concentrate buffer tank 23, and part of the concentrate is returned to the mixing tank 21 by adjusting the circulation ratio by the flow control pump, and mixed with the alcohol-containing waste liquid from the alcohol-containing waste liquid pretreatment system 1. The other part of the concentrated solution is conveyed to a reverse osmosis device 26 by a liquid conveying pump for reverse osmosis to further concentrate ions such as lithium, cobalt, nickel and the like, and the obtained reverse osmosis concentrated solution is conveyed to a reverse osmosis concentrated solution buffer tank 27 and then conveyed to the ion exchange system 3 through a pipeline for step-by-step separation of ions such as lithium, cobalt, nickel and the like. After passing through the electrodialyzer 22, the other part of the liquid is an alcohol solution with high purity, and is transferred to an alcohol solution storage tank 24 through a transfer pump.
The ion exchange system 3 can realize the selective recovery of ions such as lithium, cobalt, nickel and the like in the concentrated solution after electrodialysis. In the ion exchange system 3, the ion exchange adsorption and ion exchange desorption of lithium, cobalt, nickel and other ions adopt a parallel pipeline mode. Two groups of pipelines connected in parallel, wherein when one group of pipelines carries out ion exchange adsorption, the other group carries out ion exchange desorption, and the specific operation mode is as follows: the concentrated solution from the reverse osmosis concentrated solution buffer tank 27 after electrodialysis is conveyed into a lithium ion exchange device I32 through a concentrated solution intelligent pump I31 (at the moment, a concentrated solution intelligent pump II 35 is closed), so that the ion exchange adsorption of lithium ions is realized, the liquid after adsorption is conveyed into a cobalt ion exchange device I33 through a conveying pump, the ion exchange adsorption of cobalt ions is realized, the liquid after adsorption is conveyed into a nickel ion exchange device I34 through the conveying pump, the ion exchange adsorption of nickel ions is realized, and the residual alcohol solution with high purity after adsorption is conveyed into an alcohol solution storage tank 24 through the conveying pump. Meanwhile, the ion adsorption and desorption are carried out on the other group of pipelines connected in parallel, and the specific process is as follows: the desorption liquid in the desorption liquid storage tank 39 is respectively conveyed to the lithium ion exchange device II 36, the cobalt ion exchange device II 37 and the nickel ion exchange device II 38 through the desorption liquid intelligent pump II 311 (at the moment, the desorption liquid intelligent pump I310 is closed), so that desorption of lithium ions, cobalt ions and nickel ions is respectively realized. The desorbed solutions are respectively transferred to the lithium solution tank 312, the cobalt solution tank 313 and the nickel solution tank 314 by the transfer pumps.
Or:
the concentrated solution from the electrodialysis in the concentrated solution buffer tank 23 is conveyed to the lithium ion exchange device II 36 through the concentrated solution intelligent pump II 35 (at the moment, the concentrated solution intelligent pump I31 is closed), the ion exchange adsorption of lithium ions is realized, the liquid after adsorption is conveyed to the cobalt ion exchange device II 37 through the liquid conveying pump, the ion exchange adsorption of cobalt ions is realized, the liquid after adsorption is conveyed to the nickel ion exchange device II 38 through the liquid conveying pump, the ion exchange adsorption of nickel ions is realized, and the residual alcohol solution with high purity after adsorption is conveyed to the alcohol solution storage tank 24 through the liquid conveying pump. Meanwhile, the ion adsorption and desorption are carried out on the other group of pipelines connected in parallel, and the specific process is as follows: the desorption liquid in the desorption liquid storage tank 39 is respectively conveyed to the lithium ion exchange device I32, the cobalt ion exchange device I33 and the nickel ion exchange device I34 through the desorption liquid intelligent pump I310 (at the moment, the desorption liquid intelligent pump II 311 is closed), so that desorption of lithium ions, cobalt ions and nickel ions is respectively realized. The desorbed solutions are respectively transferred to the lithium solution tank 312, the cobalt solution tank 313 and the nickel solution tank 314 by the transfer pumps.
Claims (4)
1. The utility model provides a comprehensive recycling combination equipment of alcohol-containing waste liquid in lithium battery production process which characterized in that: the device comprises an alcohol-containing waste liquid pretreatment system (1), a circulating electrodialysis-reverse osmosis system (2) and an ion exchange system (3) which are connected together.
2. The comprehensive recycling combination equipment for alcohol-containing waste liquid in the production process of lithium batteries as claimed in claim 1, characterized in that: the pretreatment system (1) for the alcohol-containing waste liquid comprises an alcohol-containing waste liquid storage tank (11), a precision filter (12) and an alcohol-containing waste liquid buffer tank (13); the upper end of the precision filter (12) is connected with the alcohol-containing waste liquid storage tank (11) through a pipeline I, the lower end of the precision filter is connected with the alcohol-containing waste liquid buffer tank (13), and the alcohol-containing waste liquid buffer tank (13) is connected with the circulating electrodialysis-reverse osmosis system (2).
3. The comprehensive recycling combination equipment for alcohol-containing waste liquid in the production process of lithium batteries as claimed in claim 1, characterized in that: the circulating electrodialysis-reverse osmosis system (2) comprises a mixing tank (21), an electrodialyzer (22), an electrodialysis concentrated solution buffer tank (23), an alcohol solution storage tank (24), a reverse osmosis device (26) and a reverse osmosis concentrated solution buffer tank (27); the upper end of the electrodialyzer (22) is sequentially connected with the mixing tank (21) and an alcohol-containing waste liquid buffer tank (13) in the alcohol-containing waste liquid pretreatment system (1), and the lower end of the electrodialyzer is respectively connected with the alcohol liquid storage tank (24) and the electrodialysis concentrated liquid buffer tank (23) through a pipeline II; one end of the electrodialysis concentrated solution buffer tank (23) is connected with the mixing tank (21) through a flow control pump (25), and the other end of the electrodialysis concentrated solution buffer tank is sequentially connected with the reverse osmosis device (26) and the reverse osmosis concentrated solution buffer tank (27); the reverse osmosis concentrated solution buffer tank (27) is connected with the ion exchange system (3).
4. The comprehensive recycling combination equipment for alcohol-containing waste liquid in the production process of lithium batteries as claimed in claim 1, characterized in that: the ion exchange system (3) comprises a lithium ion exchange device I (32), a cobalt ion exchange device I (33), a nickel ion exchange device I (34), a lithium ion exchange device II (36), a cobalt ion exchange device II (37), a nickel ion exchange device II (38), a desorption liquid storage tank (39), a lithium liquid storage tank (312), a cobalt liquid storage tank (313) and a nickel liquid storage tank (314); the upper end of the lithium ion exchange device I (32) is connected with a reverse osmosis concentrated solution buffer tank (27) in the circulating electrodialysis-reverse osmosis system (2) through a concentrated solution intelligent pump I (31), and the lower end of the lithium ion exchange device I is sequentially connected with the cobalt ion exchange device I (33) and the nickel ion exchange device I (34); the lower end of the nickel ion exchange device I (34) is connected with an alcohol solution storage tank (24) in the circulating electrodialysis-reverse osmosis system (2); the upper end of the lithium ion exchange device II (36) is connected with the reverse osmosis concentrated solution buffer tank (27) through a concentrated solution intelligent pump II (35), and the lower end of the lithium ion exchange device II is sequentially connected with the cobalt ion exchange device II (37) and the nickel ion exchange device II (38); the lower end of the nickel ion exchange device II (38) is connected with the alcohol liquid storage tank (24); the desorption liquid storage tank (39) is connected with the lithium ion exchange device I (32), the cobalt ion exchange device I (33) and the nickel ion exchange device I (34) in parallel through a desorption liquid intelligent pump I (310); the desorption liquid storage tank (39) is connected with the lithium ion exchange device II (36), the cobalt ion exchange device II (37) and the nickel ion exchange device II (38) in parallel through a desorption liquid intelligent pump II (311); the lithium ion exchange device I (32) and the lithium ion exchange device II (36) are respectively connected with the lithium liquid storage tank (312) through a pipeline III; the cobalt ion exchange device I (33) and the cobalt ion exchange device II (37) are respectively connected with the cobalt liquid storage tank (313) through a pipeline IV; the nickel ion exchange device I (34) and the nickel ion exchange device II (38) are respectively connected with the nickel liquid storage tank (314) through pipelines V.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051129.XA CN110882629A (en) | 2018-09-10 | 2018-09-10 | Alcohol-containing waste liquid comprehensive recycling combination equipment in lithium battery production process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811051129.XA CN110882629A (en) | 2018-09-10 | 2018-09-10 | Alcohol-containing waste liquid comprehensive recycling combination equipment in lithium battery production process |
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| CN110882629A true CN110882629A (en) | 2020-03-17 |
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| CN201811051129.XA Pending CN110882629A (en) | 2018-09-10 | 2018-09-10 | Alcohol-containing waste liquid comprehensive recycling combination equipment in lithium battery production process |
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| CN (1) | CN110882629A (en) |
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| CN112973453A (en) * | 2021-03-19 | 2021-06-18 | 青海东台吉乃尔锂资源股份有限公司 | Method for supplementing water and diluting concentrated solution of salt lake brine |
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