CN109273791A - A kind of minimizing technology of applying waste lithium ionic power battery septation - Google Patents
A kind of minimizing technology of applying waste lithium ionic power battery septation Download PDFInfo
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- CN109273791A CN109273791A CN201811291246.3A CN201811291246A CN109273791A CN 109273791 A CN109273791 A CN 109273791A CN 201811291246 A CN201811291246 A CN 201811291246A CN 109273791 A CN109273791 A CN 109273791A
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- Prior art keywords
- particle
- minimizing technology
- diaphragm
- power battery
- preheating
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- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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
Abstract
The invention discloses a kind of minimizing technology of applying waste lithium ionic power battery septation, include the following steps: to cross 5 meshes after applying waste lithium ionic power battery to be broken into particle, the small particle particle and partial size for obtaining partial size lower than 5 mesh are greater than the big partial size particle of 5 purposes；Big partial size particle is preheated, preheating temperature is controlled at 100~300 DEG C；The particle obtained after the completion of preheating is subjected to heat resolve, until the thermal decomposition of particle septation is completely, the temperature of heat resolve is controlled at 300~500 DEG C；The particle obtained after the completion of decomposing is recycled after cooling.The minimizing technology uses the design of two-part heating, improve the pyrolysis efficiency of particle septation, the pyrolysis of diaphragm is more complete, the diaphragm in applying waste lithium ionic power battery can directly be decomposed removal, solves the removal problem of the broken rear particle septation of waste and old power battery；Meanwhile the process is easy to operate, is easy to industrialize.
Description
Technical field
The invention belongs to applying waste lithium ionic power batteries to be recycled technical field, and in particular to a kind of applying waste lithium ionic is dynamic
The minimizing technology of power battery septation.
Background technique
Lithium-ion-power cell is the novel high-energy battery succeeded in developing in 20th century, and the cathode of this battery is lithium metal,
Anode MnO2, SOCl2, (CFx)nDeng because it is high with energy, cell voltage is high, operating temperature range is wide, storage life is long
The advantages that, it is widely used in military and civilian compact electric apparatus.The anode of battery is assembled in after diaphragm material Electolyte-absorptive
It is very important component in lithium-ion-power cell between cathode.The main function of diaphragm be by the positive and negative anodes of battery every
It opens, prevents the two poles of the earth from directly contacting generation short circuit.Diaphragm material itself is nonconducting, but its structure and performance determine battery
Interfacial structure, internal resistance size, to influence the capacity of battery, circulation and safety, the diaphragm haveing excellent performance is to raising battery
And the comprehensive performance of power battery plays an important role.
Currently, lithium-ion power battery dissepiment material is based on polyolefin micropore barrier diaphragm.The characteristics of polyolefin micropore barrier diaphragm
Be have that good mechanical strength, porosity be higher, chemical stability number, and it is low in cost, be suitble to industrialized production.Commodity
The lithium ion battery separator material of change is mainly microporous membrane and polypropylene/poly- second by monolayer polyethylene (PE), polypropylene (PP)
Three layers of microporous compound film of alkene/polypropylene (PP/PE/PP).
After power battery is broken, polyolefin micropore barrier diaphragm is dispersed in particle, and the particle of broken rear electrode material is easy to attached
In the inside of micro-pore septum, be not very well, still to there is a large amount of electricity inside micro-pore septum using common separation method effect
The remnants of pole material.Therefore, in the rate of recovery and particle in order to improve electrode material each component separating effect, need to study
A kind of method of polyolefin micropore barrier diaphragm in removal particle.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, provide one
The minimizing technology of particle septation after the waste and old power battery of kind is broken.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of minimizing technology of applying waste lithium ionic power battery septation, includes the following steps:
(1) 5 meshes are crossed after applying waste lithium ionic power battery being broken into particle, it is broken lower than the small particle of 5 mesh to obtain partial size
Material and partial size are greater than the big partial size particle of 5 purposes；
(2) the big partial size particle obtained after the step (1) is preheated, the control of preheating temperature 100~
300℃；
(3) particle obtained after the completion of the step (2) preheating is subjected to heat resolve, until particle septation heat point
Completely, the temperature of heat resolve is controlled at 300~500 DEG C solution；
(4) particle obtained after the completion of decomposing the step (3) is recycled after cooling.
Diaphragm minimizing technology of the invention, the design heated using two-part are first preheated at 100~300 DEG C,
To improve the pyrolysis efficiency of particle septation, then solution thermal decomposition is carried out at 300~500 DEG C, keep the pyrolysis of diaphragm more complete,
Diaphragm in applying waste lithium ionic power battery can directly be decomposed into removal, without being individually collected processing to diaphragm, realized
The separation of diaphragm, removal one stepization processing, solve waste and old power battery it is broken after particle septation removal problem.
Preheating temperature is controlled at 100~300 DEG C, can effectively reduce the duration in heat resolve stage, is improved and is decomposed
The temperature of efficiency, heat resolve is controlled at 300~500 DEG C, can effectively decompose the diaphragm in applying waste lithium ionic power battery, point
Solution temperature is too low to will lead to decomposition not exclusively, and decomposition temperature is excessively high to will cause waste, even results on fire, and 300~500 DEG C are energy
Just decompose the optimum temperature of diaphragm.
It is nearly all electrode material in small particle particle after crossing 5 meshes, diaphragm is sized in big partial size particle, with
Further progress two-part heat treatment, conducive to the removal efficiency for improving particle septation.
Above-mentioned minimizing technology, it is preferred that the diaphragm is polyolefin micropore barrier diaphragm.Applying waste lithium ionic power battery is broken
Afterwards, polyolefin micropore barrier diaphragm is dispersed in particle, and the particle of broken rear electrode material is easy to be attached to the inside of micro-pore septum, is adopted
It is not very well, still to there is the remnants of a large amount of electrode material inside micro-pore septum with common separation method effect.Of the invention
Diaphragm in applying waste lithium ionic power battery can directly be decomposed removal, efficiently solved because of polyolefin by diaphragm minimizing technology
The problem of diaphragm and electrode material can not efficiently separate caused by easy remaining electrode material inside micro-pore septum.
Preferably, in the step (1), the diameter of particle is not more than 15mm, and the small particle particle is recycled.
Preferably, in the step (2), the preheating time is 0.5-2h.
Preferably, in the step (2), preheating temperature is controlled at 150 DEG C.
Preferably, in the step (3), the time of heat resolve is 0.5-1h.
Preferably, in the step (3), the temperature of heat resolve is controlled at 400 DEG C.
Preferably, the preheating and heat resolve process carry out in reacting in rotary kiln furnace.It is furthermore preferred that rotary kiln
The furnace body of reacting furnace persistently rotates, so that particle homogeneous heating, diaphragm decomposes more complete.
Preferably, the exhaust gas that the preheating and heat resolve generate in the process is collected by waste gas collection device.
Waste gas collection device is used to collect the gas that the pyrolysis of particle septation generates, and removes the peculiar smell generated in thermal decomposition process,
Achieve the purpose that clean manufacturing.
Preferably, the particle obtained after the completion of the decomposition is cooled down through vacuum cooled room, particle after cooling and institute
State the recovery processing that small particle particle enters next stage together.Cooling carries out in vacuum cooled room, can be to avoid in particle
Copper aluminium be oxidized during cooling.
Compared with prior art, the invention has the benefit that
1, minimizing technology of the invention, the design heated using two-part, improves the pyrolysis efficiency of particle septation, every
The pyrolysis of film is more complete, the diaphragm in applying waste lithium ionic power battery can directly be decomposed removal, without independent to diaphragm
It is collected processing, separation, the removal one stepization processing of diaphragm is realized, solves the broken rear particle interval of waste and old power battery
The removal problem of film；Meanwhile the process is easy to operate, is easy to industrialize.
2, minimizing technology of the invention efficiently solves and is easy remaining electrode material inside polyolefin micropore barrier diaphragm due to leads
The problem of diaphragm and electrode material of cause can not efficiently separate.
3, minimizing technology of the invention, preheating temperature are controlled at 100~300 DEG C, can effectively reduce heat resolve
The duration in stage improves decomposition efficiency, and the temperature of heat resolve is controlled at 300~500 DEG C, can effectively decompose applying waste lithium ionic
Diaphragm in power battery, decomposition temperature is too low to will lead to decomposition not exclusively, and decomposition temperature is excessively high to will cause waste, even results in
On fire, 300~500 DEG C are the optimum temperatures that can just decompose diaphragm.
4, minimizing technology of the invention, preheating and heat resolve process carry out in reacting in rotary kiln furnace, and furnace body is held
Continuous rotation, so that particle homogeneous heating, diaphragm decomposes more complete；The exhaust gas generated during preheating and heat resolve passes through
Waste gas collection device is collected, and can also be removed the peculiar smell generated in thermal decomposition process, be achieved the purpose that clean manufacturing；It decomposes
The particle obtained after the completion is cooled down through vacuum cooled room, and cooling effect is more preferable.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the removal process flow chart of particle septation after waste and old power battery of the invention is broken.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is done below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but protection scope of the present invention is not limited to following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art
Together.Technical term used herein is intended merely to the purpose of description specific embodiment, and it is of the invention to be not intended to limitation
Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1:
The minimizing technology of polyolefin micropore barrier diaphragm in a kind of applying waste lithium ionic power battery of the invention, as shown in Figure 1, packet
Include following steps:
(1) 5 meshes are crossed after applying waste lithium ionic power battery being broken into particle of the diameter no more than 15mm, it is low to obtain partial size
It is greater than the big partial size particle of 5 purposes in the small particle particle and partial size of 5 mesh；
(2) the big partial size particle obtained after the step (1) is turned round by the removal device that conveyer belt is delivered to diaphragm
It is preheated in kiln reacting furnace, for the control of preheating temperature at 150 DEG C, the preheating time is 1.0h；
(3) particle obtained after the completion of the step (2) preheating is continued into heating point in reacting in rotary kiln furnace
Solution, until the thermal decomposition of particle septation is completely, at 400 DEG C, the time of heat resolve is 0.5h for the temperature control of heat resolve；In advance
During heating and heat resolve, the furnace body of reacting in rotary kiln furnace persistently rotates, so that particle homogeneous heating, diaphragm is decomposed more
Completely；The exhaust gas generated during preheating and heat resolve is collected by waste gas collection device, can also be removed in heat
The peculiar smell that decomposable process generates, achievees the purpose that clean manufacturing；
(4) particle obtained after the completion of decomposing the step (3), which is sent to vacuum cooled room, to be cooled down, after cooling broken
Material enters the recovery processing of next stage together with the small particle particle.
Through analyzing, the removal efficiency of particle septation reaches 99.0% or more.
The minimizing technology of the present embodiment, the design heated using two-part, improves the pyrolysis efficiency of particle septation, every
The pyrolysis of film is complete, the diaphragm in applying waste lithium ionic power battery can directly be decomposed removal, without individually carrying out to diaphragm
Collection processing realizes separation, the removal one stepization processing of diaphragm, efficiently solves residual because being easy inside polyolefin micropore barrier diaphragm
Stay the problem of diaphragm and electrode material can not efficiently separate caused by electrode material；Meanwhile the process is easy to operate, easily
In industrialization.
Embodiment 2:
The minimizing technology of polyolefin micropore barrier diaphragm in a kind of applying waste lithium ionic power battery of the invention, including walk as follows
It is rapid:
(1) 5 meshes are crossed after applying waste lithium ionic power battery being broken into particle of the diameter no more than 15mm, it is low to obtain partial size
It is greater than the big partial size particle of 5 purposes in the small particle particle and partial size of 5 mesh；
(2) the big partial size particle obtained after the step (1) is turned round by the removal device that conveyer belt is delivered to diaphragm
It is preheated in kiln reacting furnace, for the control of preheating temperature at 100 DEG C, the preheating time is 2.0h；
(3) particle obtained after the completion of the step (2) preheating is continued into heating point in reacting in rotary kiln furnace
Solution, until the thermal decomposition of particle septation is completely, at 300 DEG C, the time of heat resolve is 1.0h for the temperature control of heat resolve；In advance
During heating and heat resolve, the furnace body of reacting in rotary kiln furnace persistently rotates, so that particle homogeneous heating, diaphragm is decomposed more
Completely；The exhaust gas generated during preheating and heat resolve is collected by waste gas collection device, can also be removed in heat
The peculiar smell that decomposable process generates, achievees the purpose that clean manufacturing；
(4) particle obtained after the completion of decomposing the step (3), which is sent to vacuum cooled room, to be cooled down, after cooling broken
Material enters the recovery processing of next stage together with the small particle particle.
Through analyzing, the removal efficiency of particle septation reaches 95.0% or so.
The minimizing technology of the present embodiment, the design heated using two-part, improves the pyrolysis efficiency of particle septation, every
The pyrolysis of film is complete, the diaphragm in applying waste lithium ionic power battery can directly be decomposed removal, without individually carrying out to diaphragm
Collection processing realizes separation, the removal one stepization processing of diaphragm, efficiently solves residual because being easy inside polyolefin micropore barrier diaphragm
Stay the problem of diaphragm and electrode material can not efficiently separate caused by electrode material；Meanwhile the process is easy to operate, easily
In industrialization.
Embodiment 3:
The minimizing technology of polyolefin micropore barrier diaphragm in a kind of applying waste lithium ionic power battery of the invention, including walk as follows
It is rapid:
(1) 5 meshes are crossed after applying waste lithium ionic power battery being broken into particle of the diameter no more than 15mm, it is low to obtain partial size
It is greater than the big partial size particle of 5 purposes in the small particle particle and partial size of 5 mesh；
(2) the big partial size particle obtained after the step (1) is turned round by the removal device that conveyer belt is delivered to diaphragm
It is preheated in kiln reacting furnace, for the control of preheating temperature at 300 DEG C, the preheating time is 0.5h；
(3) particle obtained after the completion of the step (2) preheating is continued into heating point in reacting in rotary kiln furnace
Solution, until the thermal decomposition of particle septation is completely, at 500 DEG C, the time of heat resolve is 0.5h for the temperature control of heat resolve；In advance
During heating and heat resolve, the furnace body of reacting in rotary kiln furnace persistently rotates, so that particle homogeneous heating, diaphragm is decomposed more
Completely；The exhaust gas generated during preheating and heat resolve is collected by waste gas collection device, can also be removed in heat
The peculiar smell that decomposable process generates, achievees the purpose that clean manufacturing；
(4) particle obtained after the completion of decomposing the step (3), which is sent to vacuum cooled room, to be cooled down, after cooling broken
Material enters the recovery processing of next stage together with the small particle particle.
Through analyzing, the removal efficiency of particle septation reaches 99.0% or so.
The minimizing technology of the present embodiment, the design heated using two-part, improves the pyrolysis efficiency of particle septation, every
The pyrolysis of film is complete, the diaphragm in applying waste lithium ionic power battery can directly be decomposed removal, without individually carrying out to diaphragm
Collection processing realizes separation, the removal one stepization processing of diaphragm, efficiently solves residual because being easy inside polyolefin micropore barrier diaphragm
Stay the problem of diaphragm and electrode material can not efficiently separate caused by electrode material；Meanwhile the process is easy to operate, easily
In industrialization.
Claims (10)
1. a kind of minimizing technology of applying waste lithium ionic power battery septation, which comprises the steps of:
(1) applying waste lithium ionic power battery is broken into after particle and crosses 5 meshes, obtain small particle particle of the partial size lower than 5 mesh and
Partial size is greater than the big partial size particle of 5 purposes；
(2) the big partial size particle obtained after the step (1) is preheated, preheating temperature is controlled 100~300
℃；
(3) particle obtained after the completion of the step (2) preheating is subjected to heat resolve, until particle septation has thermally decomposed
Entirely, the temperature of heat resolve is controlled at 300~500 DEG C；
(4) particle obtained after the completion of decomposing the step (3) is recycled after cooling.
2. minimizing technology according to claim 1, which is characterized in that the diaphragm is polyolefin micropore barrier diaphragm.
3. minimizing technology according to claim 1, which is characterized in that in the step (1), the diameter of particle is not more than
15mm, the small particle particle are recycled.
4. minimizing technology according to claim 1, which is characterized in that in the step (2), the preheating time is 0.5-
2h。
5. minimizing technology according to claim 1, which is characterized in that in the step (2), the control of preheating temperature exists
150℃。
6. minimizing technology according to claim 1, which is characterized in that in the step (3), the time of heat resolve is
0.5-1h。
7. minimizing technology according to claim 1, which is characterized in that in the step (3), the temperature of heat resolve is controlled
At 400 DEG C.
8. minimizing technology described in any one of -7 according to claim 1, which is characterized in that the preheating and heat resolve mistake
Cheng Jun is carried out in reacting in rotary kiln furnace.
9. minimizing technology described in any one of -7 according to claim 1, which is characterized in that the preheating and heat resolve mistake
The exhaust gas generated in journey is collected by waste gas collection device.
10. minimizing technology described in any one of -7 according to claim 1, which is characterized in that obtained after the completion of the decomposition
Particle is cooled down through vacuum cooled room, and particle after cooling enters at the recycling of next stage together with the small particle particle
Reason.
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| CN201811291246.3A CN109273791B (en) | 2018-10-31 | 2018-10-31 | Method for removing diaphragm in waste lithium ion power battery |
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| CN201811291246.3A CN109273791B (en) | 2018-10-31 | 2018-10-31 | Method for removing diaphragm in waste lithium ion power battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112974465A (en) * | 2020-12-28 | 2021-06-18 | 北京博萃循环科技有限公司 | Harmless recovery treatment method for waste lithium ion battery |
| CN113659225A (en) * | 2021-07-20 | 2021-11-16 | 河南巨峰环保科技有限公司 | Recycling method of lithium battery diaphragm waste material |
| CN113777507A (en) * | 2021-08-03 | 2021-12-10 | 中国民用航空飞行学院 | Thermal runaway vacuum cooling device under lithium ion battery variable-voltage environment |
| WO2021249051A1 (en) * | 2020-06-09 | 2021-12-16 | 广东邦普循环科技有限公司 | Anaerobic cracking method for power battery |
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| CN113777507A (en) * | 2021-08-03 | 2021-12-10 | 中国民用航空飞行学院 | Thermal runaway vacuum cooling device under lithium ion battery variable-voltage environment |
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