CN212451027U - Waste electrolyte treatment system - Google Patents
Waste electrolyte treatment system Download PDFInfo
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- CN212451027U CN212451027U CN202020712102.7U CN202020712102U CN212451027U CN 212451027 U CN212451027 U CN 212451027U CN 202020712102 U CN202020712102 U CN 202020712102U CN 212451027 U CN212451027 U CN 212451027U
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Abstract
The utility model relates to the technical field of lithium battery waste electrolyte treatment, and discloses a waste electrolyte treatment system, which comprises a reactor, wherein the upper part of the reactor is provided with a pyrolysis gas outlet, the bottom of the reactor is provided with a pyrolysis residue outlet, and the reactor is also provided with a waste electrolyte inlet; the pyrolysis gas recovery unit comprises a condensing reflux device, a converter and a salt separation concentration unit which are sequentially communicated with the pyrolysis gas outlet, and the salt separation concentration unit is respectively connected with the fluoride salt recovery unit and the phosphate recovery unit; and a pyrolysis residue recovery unit including a lithium salt separator in communication with the pyrolysis residue outlet, and a lithium salt recovery unit and an organic matter recovery unit in communication with respective outlets of the lithium salt separator. The utility model provides a waste electrolyte processing system, it is serious to have solved among the lithium cell waste electrolyte processing process equipment corrosion, separates the difficulty, has secondary pollution's problem, realizes the resourceization of waste electrolyte, and is innoxious, safe, high-efficient, environmental protection, and product purity is high.
Description
Technical Field
The utility model belongs to the technical field of the water treatment, more specifically say, relate to a processing system of lithium cell waste electrolyte.
Background
The lithium battery as a typical battery has the advantages of high energy density, strong charging and discharging capacity, high speed, large output power, strong adaptability, long service life and the like, has become the main force of the field of portable mobile power supplies, and is widely applied to the fields of mobile phones, notebooks, electric vehicles and electric automobiles.
Production of lithium batteries and disassembly of waste lithium batteries can produce waste electrolyte. The common main components of the waste electrolyte of the lithium battery are organic solvent (ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate and the like), lithium salt (lithium hexafluorophosphate is abundant) and a small amount of additive. Most of the organic solvents have biological toxicity and great harm to the environment and human body, and the commonly used lithium salt, lithium hexafluorophosphate (LiPF)6) After long-time exposure to the environment, decomposition reaction can occur, pollution gas with extremely strong toxicity is generated, harm is extremely large, and the pollution is caused by fluorine and phosphorus which can be transferred to water. The waste electrolyte of the lithium battery is not properly treated, so that the environment and the human body are harmed, and the resource waste is also caused. The development of safe, efficient and environment-friendly treatment technology of the waste electrolyte of the lithium battery is of great significance.
At present, the waste electrolyte treatment of the lithium battery is mainly carried out by burning, because LiPF6The existing method has the disadvantages of serious equipment corrosion, great difficulty in treating fluorine and phosphorus in tail gas and waste water, secondary waste generation and high cost. Organic matter for treating waste electrolyte of lithium battery by extraction methodThe loss of solvent and extractant is large, the cost is increased, new pollution is easy to generate, and the separation effect is low. The vacuum reduced pressure distillation for recovering the organic solvent and the lithium salt in the waste electrolyte of the lithium battery requires higher precision, has high requirements on equipment, large investment, complex process, strict equipment operation requirements, production efficiency lower than that of conventional distillation, and simultaneously has the corrosion problem, and the lithium salt needs to be purified. The alkali method and the rectification method can form mixed salt or solid waste, and have the problems of secondary pollution, low resource utilization rate and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a waste electrolyte processing system to solve the problem that equipment corrosion is serious, secondary pollution, resource utilization is low among the current lithium cell waste electrolyte processing technology.
In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a spent electrolyte treatment system comprising:
the reactor is used for heating and decomposing the waste electrolyte to be treated, a pyrolysis gas outlet is formed in the upper part of the reactor, a pyrolysis residue outlet is formed in the bottom of the reactor, and a waste electrolyte inlet is formed in the reactor;
the pyrolysis gas recovery unit comprises a condensing reflux device, a converter and a salt separation concentration unit which are sequentially communicated with the pyrolysis gas outlet, and the salt separation concentration unit is respectively connected with a fluoride salt recovery unit and a phosphate recovery unit; and
and the pyrolysis residue recovery unit comprises a lithium salt separator communicated with the pyrolysis residue outlet, and a lithium salt recovery unit and an organic matter recovery unit respectively communicated with the corresponding outlets of the lithium salt separator.
Further, the steam outlet of the fluoride salt recovery unit and the steam outlet of the phosphate recovery unit are connected with a condenser through pipelines, the condenser is sequentially connected with a reuse water tank and a mixer through pipelines, and the outlet of the mixer is connected with the inlet of the converter.
Further, the fluoride salt recovery unit comprises a fluoride salt water tank, a fluoride salt water evaporator, a fluoride salt separator and a fluoride salt dryer which are connected in sequence through pipelines; an inlet of the fluoride salt water tank is connected with a first outlet of the salt separation concentration unit; the outlet of the fluoride brine evaporator is connected with the condenser; the phosphate recovery unit comprises a phosphate water tank, a phosphate water evaporator, a phosphate separator and a phosphate dryer which are sequentially connected through pipelines; an inlet of the phosphate water tank is connected with a second outlet of the salt separation concentration unit; and the outlet of the phosphate water evaporator is connected with the condenser.
Further, the salt separation and concentration unit comprises a salt separation device for separating fluoride salt and phosphate salt, and a concentration device for concentrating the separated fluoride salt and phosphate salt.
Further, a first outlet of the lithium salt separator is sequentially connected with the organic matter recovery unit and the kettle residue treatment unit through pipelines; the kettle residue processing unit is used for disposing kettle residues.
Further, the organic matter recovery unit comprises an organic solvent tank and a rectification device which are sequentially connected through a pipeline.
Further, a second outlet of the lithium salt separator is sequentially connected with the lithium salt recovery unit and the washing waste liquid treatment unit through pipelines; the washing waste liquid treatment unit is used for recycling and regenerating the washing waste liquid.
Further, the lithium salt recovery unit comprises a washer, a salt washing separator and a lithium salt dryer which are sequentially connected through a pipeline.
Further, the useless electrolyte access connection feed unit of reactor, feed unit includes head tank and the filter equipment who connects gradually through the pipeline, filter equipment is micro-filtration filter equipment and/or ultrafiltration filter equipment.
Further, be equipped with wear-resisting corrosion-resistant heating coil or heating rod in the reactor, the reactor inner wall has wear-resisting corrosion-resistant inside lining, be equipped with wear-resisting corrosion-resistant gas distributor and multistage agitator in the converter, reactor and condensate reflux ware have wear-resisting corrosion-resistant coating or surface lining layer structure.
The utility model provides a waste electrolyte processing system compares with prior art, carries out thermal decomposition, LiPF among the waste electrolyte through the reactor to waste electrolyte6Decomposition to produce unstable PF5Gas and LiF lithium salt, a condensing reflux device is used for reducing evaporation entrainment of the organic solvent, and the decomposed PF is converted by a converter5The method comprises the steps of converting unstable gas to obtain fluoride salt and phosphate mixed salt, separating, evaporating and crystallizing the mixed salt through a salt separation concentration unit, a fluoride salt recovery unit and a phosphate recovery unit to obtain high-purity fluoride salt and phosphate products respectively, recovering lithium salt (LiF) through a lithium salt recovery unit connected with a reactor to obtain the high-purity lithium salt product, and recovering an organic solvent through an organic matter recovery unit. The utility model provides a waste electrolyte processing system not only realizes high-efficient recovery lithium salt, fluoride salt and phosphate, design system water and heat cyclic utilization, and is clean environmental protection, has still solved in the lithium cell waste electrolyte processing process, and equipment corrosion is serious, and the separation difficulty has secondary pollution, the wasting of resources scheduling problem, realizes the resourceful of waste electrolyte, and is innoxious, and the high-usage, product purity is high, and is safe, high-efficient, the environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of a waste electrolyte treatment system according to an embodiment of the present invention.
In the figure: 1-a feed unit, 101-a raw material tank, 102-a raw material delivery pump, 103-a filtration device, 2-a reactor, 3-a condensate reflux device, 4-a converter, 5-a conversion liquid discharge pump, 6-a salt separation concentration unit, 600-a salt separation device, 601-a concentration device, 7-a fluoride salt recovery unit, 700-a fluoride salt tank, 701-a fluoride salt water feed pump, 702-a fluoride salt water evaporator, 703-a fluoride salt discharge pump, 704-a fluoride salt separator, 705-a fluoride salt dryer, 8-a phosphate recovery unit, 800-a phosphate salt water tank, 801-a phosphate salt water feed pump, 802-a phosphate salt water evaporator, 803-a phosphate salt discharge pump, 804-a phosphate separator, 805-a phosphate dryer, 9-reaction liquid discharge pump, 10-lithium salt separator, 11-washer, 12-washing liquid discharge pump, 13-salt washing separator, 14-lithium salt dryer, 15-washing waste liquid treatment unit, 16-organic solvent tank, 17-rectification feed pump, 18-rectification device, 19-kettle residue treatment unit, 20-condenser, 21-reuse water tank, 22-reuse water pump and 23-mixer;
l1-waste electrolyte, L2-circulating water, L3-washing liquid, L4-fraction, L5-system effluent, L6-conversion liquid, L7-water vapor condensate, G1-water vapor, G2-system exhaust, S1-fluoride salt, S2-phosphate and S3-lithium salt.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, a waste electrolyte treatment system according to the present invention will now be described. The waste electrolyte treatment system comprises a reactor 2, a pyrolysis gas outlet, a pyrolysis residue outlet and a waste electrolyte inlet, wherein the reactor 2 is used for heating and decomposing waste electrolyte L1 to be treated, the upper part of the reactor 2 is provided with the pyrolysis gas outlet, the bottom of the reactor 2 is provided with the pyrolysis residue outlet, and the reactor 2 is also provided with the waste electrolyte inlet;
the pyrolysis gas recovery unit comprises a condensing reflux device 3, a converter 4 and a salt separation concentration unit 6 which are sequentially communicated with the pyrolysis gas outlet, and the salt separation concentration unit 6 is respectively connected with a fluoride salt recovery unit 7 and a phosphate recovery unit 8; and
and the pyrolysis residue recovery unit comprises a lithium salt separator 10 communicated with the pyrolysis residue outlet, and a lithium salt recovery unit and an organic matter recovery unit which are respectively communicated with corresponding outlets of the lithium salt separator 10.
A heating coil or a heating rod is arranged in the reactor 2. The reactor 2 is used for carrying out thermal decomposition on the waste electrolyte L1, steam or electric heating can be selected, the reaction temperature is preferably 60-90 ℃, and LiPF in the waste electrolyte is ensured6Fully decomposed to produce PF5Gas and lithium LiF salt. Specifically, the inner wall of the reactor 2 is made of wear-resistant and corrosion-resistant material, preferably stainless steel lined with polytetrafluoroethylene or coated graphene, heating coil or heating rodThe material is also a wear-resistant and corrosion-resistant material, preferably stainless steel lining coated graphene, which prevents corrosion of generated gas.
The converter 4 is internally provided with a gas distributor and a multi-stage stirrer for fully contacting gas and liquid for conversion reaction. The inner wall of the converter, the gas distributor and the multistage stirrer are made of wear-resistant and corrosion-resistant materials, preferably polyethylene, polytetrafluoroethylene, stainless steel lining plastic and stainless steel coating graphene. PF gas generated in the reactor 25Enters a converter 4 for conversion reaction to generate a mixed salt water of fluoride salt and phosphate, thereby stabilizing. The conversion solution L6 is preferably a sodium hydroxide or potassium hydroxide solution, and can form a mixed brine of sodium fluoride and sodium phosphate or a mixed brine of potassium fluoride and potassium phosphate.
The utility model provides a waste electrolyte processing system compares with prior art, carries out thermal decomposition, LiPF among the waste electrolyte to waste electrolyte L1 through reactor 26Decomposition to produce unstable PF5Gas and LiF lithium salt, the generated gas is discharged into a converter 4 after passing through a condensing reflux device 3, the organic solvent carried by evaporation is condensed and refluxed and returned to a reactor 2 for continuous reaction, and the decomposed PF is treated by the converter 45And (3) converting the unstable gas to obtain a fluoride salt and phosphate mixed salt, and separating, evaporating and crystallizing the mixed salt through a salt separation and concentration unit 6, a fluoride salt recovery unit 7 and a phosphate recovery unit 8 to respectively obtain high-purity fluoride salt S1 and phosphate S2 products. Meanwhile, the lithium salt recovery unit connected to the reactor 2 recovers lithium salt (LiF) to obtain a high purity lithium salt product S3, and the organic recovery unit recovers the organic solvent. The utility model provides a waste electrolyte processing system not only realizes high-efficient recovery lithium salt, fluoride salt and phosphate, design system water and heat cyclic utilization, and is clean environmental protection, has still solved in the lithium cell waste electrolyte processing process, and equipment corrosion is serious, and the separation difficulty has secondary pollution, the wasting of resources scheduling problem, realizes the resourceful of waste electrolyte, and is innoxious, and the high-usage, product purity is high, and is safe, high-efficient, the environmental protection.
In one embodiment, the steam outlet of the fluoride salt recovery unit 7 and the steam outlet of the phosphate salt recovery unit 8 are connected with the condenser 20 through pipelines, the condenser 20 is sequentially connected with the reuse water tank 21, the reuse water pump 22 and the mixer 23 through pipelines, and the outlet of the mixer 23 is connected with the inlet of the converter 4.
In one embodiment, the fluoride salt recovery unit 7 includes a fluoride salt water tank 700, a fluoride salt water feed pump 701, a fluoride salt water evaporator 702, a fluoride salt discharge pump 703, a fluoride salt separator 704, and a fluoride salt dryer 705, which are connected in this order by a pipe; an inlet of the fluoride water tank 700 is connected with a first outlet of the salt separation concentration unit 6; the outlet of the fluoride brine evaporator 702 is connected to the condenser 20.
In one of the embodiments, the phosphate recovery unit 8 includes a phosphate water tank 800, a phosphate water feed pump 801, a phosphate water evaporator 802, a phosphate discharge pump 803, a phosphate separator 804, and a phosphate dryer 805 connected in this order by piping; an inlet of the phosphate water tank 800 is connected to a second outlet of the salt separating concentration unit 6; the outlet of the phosphate water evaporator 802 is connected to the condenser 20.
Specifically, the fluoride salt water enters a fluoride salt water evaporator 702 through a fluoride salt water feeding pump 701, is evaporated and crystallized, then flows to a fluoride salt separator 704 through a fluoride salt discharging pump 703, and is dried through a fluoride salt dryer 705 after separation, so that fluoride salt S1 is obtained. The phosphate salt water enters a phosphate water evaporator 802 from a phosphate water feeding pump 801, is evaporated and crystallized, then flows to a phosphate separator 804 through a phosphate discharging pump 803, and is dried through a phosphate dryer 805 after separation to obtain phosphate S2. The steam generated by the fluoride salt water evaporator 702 and the phosphate salt water evaporator 802 is discharged to the condenser 20, the formed condensed water is discharged to the reuse water tank 21, and is mixed with the conversion solution L6 by the reuse water pump 22 and the mixer 23, and then is pumped into the converter 4. And water vapor condensate L7 obtained by evaporating the fluoride salt water evaporator 702 and the phosphate salt water evaporator 802 returns to the kettle residue treatment unit 19 to prepare water vapor G1. The fluoride salt water evaporator 702 and the phosphate salt water evaporator 802 can be selected from multiple-effect evaporation or MVR, and the material is preferably titanium material or lining titanium. The fluoride separator 704 and the phosphate separator 804 adopt a filtering type centrifuge, the form can be selected from a three-legged type, a horizontal type and an upper suspension type, and the discharging mode can be selected from automatic scraper discharging and automatic piston discharging.
In one embodiment, the salt separation and concentration unit 6 includes a salt separation device 600 for separating fluoride salt and phosphate salt, and a concentration device 601 for concentrating the separated fluoride salt and phosphate salt. Preferably, the salt separating device 600 can be selected from a negatively charged nanofiltration membrane device and a negatively charged electrodialysis membrane device, and the concentrating device 601 can be selected from a reverse osmosis membrane device, an electrodialysis membrane device and a distillation membrane device.
Specifically, the fluoride salt and phosphate mixed brine generated after reaction with the conversion solution L6 in the converter 4 enters the salt separating and concentrating unit 6 for separation and concentration, the fluoride salt and the phosphate are separated and concentrated, the brine entering the subsequent fluoride salt and phosphate recovery unit is high in concentration, easy to evaporate and crystallize, high in product recovery rate, low in operation energy consumption and low in investment cost.
In one embodiment, the pyrolysis residue outlet at the bottom of the reactor 2 is connected with the reaction liquid discharge pump 9, the lithium salt separator 10 through a pipeline in sequence, and the first outlet of the lithium salt separator 10 is connected with the organic matter recovery unit and the still residue treatment unit 19 through a pipeline in sequence.
The lithium salt separator 10 adopts a filter type centrifuge, the form can be selected from a three-legged type, a horizontal type and an upper suspension type, and the discharging mode can be selected from automatic scraper discharging and automatic piston discharging.
Specifically, the waste electrolyte is thermally decomposed by the reactor 2 to generate lithium salt (LiF), the mixed solution of lithium salt and organic solvent is sent to a lithium salt separator 10 by a reaction solution discharge pump 9, the organic solvent is separated from the lithium salt, and the obtained organic solvent is discharged to an organic matter recovery unit for treatment, so that the recovered organic solvent can be obtained, and the corrosion problem does not exist in the process. Kettle residues which cannot be continuously utilized enter the kettle residue treatment unit 19 for harmless treatment, the kettle residue treatment unit 19 can select an incineration and supercritical water oxidation system, the obtained water vapor G1 is recycled, and system exhaust G2 and system outlet water L5 are discharged or recycled after reaching the standard. The useless electrolyte processing system that this embodiment provided, the cauldron residue has got rid of fluorine phosphorus salt, and degradation means such as accessible burns or supercritical water oxidation handles, does not have equipment corrosion serious, problem such as fluorine phosphorus tail gas, tail water secondary treatment.
In one embodiment, the organic matter recovery unit comprises an organic solvent tank 16, a rectification feed pump 17 and a rectification device 18 which are connected in sequence through a pipeline, and the kettle residue treatment unit 19 is used for disposing the kettle residue. And discharging the organic solvent obtained by separation of the lithium salt separator 10 to an organic solvent tank 16, conveying the organic solvent to a rectifying device 18 by a rectifying feed pump 17, rectifying to obtain a product fraction L4, and allowing the kettle residue which cannot be continuously utilized to enter a kettle residue treatment unit 19 for harmless treatment. The rectifying device 18 can be a normal pressure or negative pressure continuous rectifying tower, the form can be plate type or packing type, the packing type rectifying tower is preferred, the heater can be steam or electric heating, and the rectifying temperature can be 90-250 ℃ according to the types of different waste electrolyte organic solvents.
In one embodiment, the second outlet of the lithium salt separator 10 is connected to the lithium salt recovery unit and the washing waste liquid treatment unit 15 in sequence through a pipeline. After the LiF crude salt obtained by thermal decomposition in the reactor 2 is treated by the lithium salt recovery unit, the LiF salt can be recycled after meeting the requirements of qualified products. The washing waste liquid generated in the lithium salt recovery unit passes through the washing waste liquid treatment unit 15, and is regenerated and recycled through methods such as adsorption, oxidation, biochemistry and the like.
In one embodiment, the lithium salt recovery unit comprises a scrubber 11, a washing liquid discharge pump 12, a washing salt separator 13 and a lithium salt dryer 14 which are connected in sequence through a pipeline, and a washing waste liquid treatment unit 15 is used for recycling and regenerating the washing waste liquid. The scrubber 11 may be a multistage agitation type, drum type scrubber. The salt washing separator 13 adopts a filter type centrifuge, the form can be selected from a three-legged type, a horizontal type and an upper suspension type, and the discharging mode can be selected from automatic scraper discharging and automatic piston discharging. The crude salt of LiF obtained by separation in the lithium salt separator 10 is sent to the washer 11, washed by the washing liquid L3, the mixed liquid after washing is discharged to the salt washing separator 13 by the washing liquid discharging pump 12, separated and dried by the lithium salt dryer 14 to obtain the product lithium salt S3, the washing liquid can be recycled, and the washing liquid is discharged to the washing waste liquid treatment unit 15 after reaching the use requirement, and recycled after regeneration treatment.
In one embodiment, the waste electrolyte inlet of the reactor 2 is connected with the feeding unit 1, the feeding unit 1 comprises a raw material tank 101, a raw material delivery pump 102 and a filtering device 103 which are connected in sequence through pipelines, and the filtering device 103 is a microfiltration filtering device and/or an ultrafiltration filtering device. The spent electrolyte L1 is transferred to the feed tank 101 for storage, and the feed to the reactor 2 is completed by the feed transfer pump 102 through the filter unit 103. The filtering device 103 filters impurities in the waste electrolyte L1, so that the product purity is ensured, and the damage to equipment is reduced.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A spent electrolyte treatment system, comprising:
the reactor is used for heating and decomposing the waste electrolyte to be treated, a pyrolysis gas outlet is formed in the upper part of the reactor, a pyrolysis residue outlet is formed in the bottom of the reactor, and a waste electrolyte inlet is formed in the reactor;
the pyrolysis gas recovery unit comprises a condensing reflux device, a converter and a salt separation concentration unit which are sequentially communicated with the pyrolysis gas outlet, and the salt separation concentration unit is respectively connected with a fluoride salt recovery unit and a phosphate recovery unit; and
and the pyrolysis residue recovery unit comprises a lithium salt separator communicated with the pyrolysis residue outlet, and a lithium salt recovery unit and an organic matter recovery unit respectively communicated with the corresponding outlets of the lithium salt separator.
2. The spent electrolyte treatment system of claim 1, wherein: the steam outlet of the fluoride salt recovery unit and the steam outlet of the phosphate recovery unit are connected with a condenser through pipelines, the condenser is sequentially connected with a reuse water tank and a mixer through pipelines, and the outlet of the mixer is connected with the inlet of the converter.
3. The spent electrolyte treatment system of claim 2, wherein: the fluoride salt recovery unit comprises a fluoride salt water tank, a fluoride salt water evaporator, a fluoride salt separator and a fluoride salt dryer which are sequentially connected through pipelines; an inlet of the fluoride salt water tank is connected with a first outlet of the salt separation concentration unit; the outlet of the fluoride brine evaporator is connected with the condenser; and
the phosphate recovery unit comprises a phosphate water tank, a phosphate water evaporator, a phosphate separator and a phosphate dryer which are sequentially connected through pipelines; an inlet of the phosphate water tank is connected with a second outlet of the salt separation concentration unit; and the outlet of the phosphate water evaporator is connected with the condenser.
4. The spent electrolyte treatment system of claim 1, wherein: the salt separation and concentration unit comprises a salt separation device for separating fluoride salt and phosphate and a concentration device for concentrating the separated fluoride salt and phosphate.
5. The spent electrolyte treatment system of claim 1, wherein: a first outlet of the lithium salt separator is sequentially connected with the organic matter recovery unit and the kettle residue treatment unit through pipelines; the kettle residue processing unit is used for disposing kettle residues.
6. The spent electrolyte treatment system of claim 5, wherein: the organic matter recovery unit comprises an organic solvent tank and a rectification device which are sequentially connected through a pipeline.
7. The spent electrolyte treatment system of claim 5, wherein: a second outlet of the lithium salt separator is sequentially connected with the lithium salt recovery unit and the washing waste liquid treatment unit through pipelines; the washing waste liquid treatment unit is used for recycling and regenerating the washing waste liquid.
8. The spent electrolyte treatment system of claim 7, wherein: the lithium salt recovery unit comprises a washer, a salt washing separator and a lithium salt dryer which are sequentially connected through pipelines.
9. The spent electrolyte treatment system of claim 1, wherein: the waste electrolyte inlet of the reactor is connected with a feeding unit, the feeding unit comprises a raw material tank and a filtering device which are sequentially connected through a pipeline, and the filtering device is a microfiltration filtering device and/or an ultrafiltration filtering device.
10. The spent electrolyte treatment system of claim 1, wherein: be equipped with wear-resisting corrosion-resistant heating coil or heating rod in the reactor, the reactor inner wall has wear-resisting corrosion-resistant inside lining, be equipped with wear-resisting corrosion-resistant gas distributor and multistage agitator in the converter, reactor and condensation backward flow ware have wear-resisting corrosion-resistant coating or surface lining structure.
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| CN202020712102.7U CN212451027U (en) | 2020-04-30 | 2020-04-30 | Waste electrolyte treatment system |
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| CN202020712102.7U CN212451027U (en) | 2020-04-30 | 2020-04-30 | Waste electrolyte treatment system |
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