CN203839481U - White oil recycling system in wet-process lithium battery diaphragm production - Google Patents
White oil recycling system in wet-process lithium battery diaphragm production Download PDFInfo
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- CN203839481U CN203839481U CN201420214141.9U CN201420214141U CN203839481U CN 203839481 U CN203839481 U CN 203839481U CN 201420214141 U CN201420214141 U CN 201420214141U CN 203839481 U CN203839481 U CN 203839481U
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- white oil
- lithium battery
- battery diaphragm
- wet method
- distillation column
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- 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
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Abstract
The utility model discloses a white oil recycling system in wet-process lithium battery diaphragm production. The white oil recycling system comprises an extraction tank, a distillation column system, a heating stirrer and a precise white oil filter, wherein the extraction tank is arranged on the rear side of a two-way stretching device and used for extracting white oil, the distillation column system is used for preliminarily purifying the white oil, the heating stirrer is used for decoloring the white oil and removing oxidized components in the white oil, the precise white oil filter is used for filtering and purifying the white oil, and the extraction tank, the distillation column system, the heating stirrer and the precise white oil filter are connected in sequence. The white oil serving as a pore-forming agent for lithium battery diaphragms can be extracted out by arranging the extraction tank, extracted white oil mixed liquor is added in the distillation column system and rectified at normal pressure in a vacuum mode to obtain the white oil purified preliminarily, the white oil purified preliminarily is added in the heating stirrer, the white oil purified preliminarily and activated clay are heated and stirred together, the white oil is decolored oxides are gotten rid of, and finally the white oil is injected into the precise white oil filter for precise filtration to obtain the white oil product with the purity meeting usage requirements.
Description
Technical field
The utility model belongs to the wet production technical field of lithium battery diaphragm, is specifically related to the white oil reclaiming system in a kind of wet method lithium battery diaphragm production.
Background technology
In the structure of lithium battery, barrier film is one of crucial interior layer assembly.The performance of barrier film has determined interfacial structure, the internal resistance etc. of battery, directly affects the characteristic such as capacity, circulation and security performance of battery, and the barrier film of excellent performance has important effect to the combination property that improves battery.For lithium battery, because electrolyte is organic solvent system, need to there is the diaphragm material of organic solvent-resistant, the general polyolefin porous membrane that adopts high-strength thin-film, thereby, in the production of lithium battery diaphragm, need to add pore former, existing pore former generally adopts white oil.
The production procedure of existing wet method lithium battery diaphragm generally comprises following operation: the batching → extrusion plasticizing that feeds intake → filtration metering → slab is cooling → and biaxial tension → traction trimming thickness measuring → reprocessing → rolling inspection, as shown in Figure 1.In biaxial tension operation, the oil film after biaxial tension, strand has obtained both direction orientation in length and breadth, and pore former has also been evenly distributed between the strand that orientation has occurred, after extraction, pore former can be extracted, make wet method lithium battery diaphragm show microporous properties.But in existing wet method lithium battery diaphragm production technology, the pore former waste material that obtains of extraction is not effectively recycled, cause as the consumption of the white oil of pore former greatlyr, directly cause the production cost of barrier film to increase, the market competitiveness reduces.
Summary of the invention
In view of this, the purpose of this utility model is to provide the white oil reclaiming system in a kind of wet method lithium battery diaphragm production, this white oil reclaiming system can be recycled white oil in wet method lithium battery diaphragm production process, and then reduces the production cost of lithium battery diaphragm, improves the market competitiveness.
For achieving the above object, the utility model provides following technical scheme:
White oil reclaiming system in a kind of wet method lithium battery diaphragm production, comprise be arranged on biaxial tension equipment rear side and for extract the extraction tank of white oil, for the distillation column system of preliminary purification white oil, for white oil decolour and remove white oil oxidizing component heating stirrer and for filtering the white oil accurate filter of purification white oil, described extraction tank, distillation column system, heating stirrer and white oil accurate filter are connected successively.
Further, described white oil accurate filter and feed intake and be provided with the pipe-line system I recycling for white oil between dispensing equipment.
Further, between described distillation column system and described extraction tank, be provided with for vapor phase solvent condensation and be back to the pipe-line system II that described extraction tank recycles.
Further, described distillation column system comprises at least two-step distillation tower that series connection arranges.
Further, in destilling tower, the liquid-phase outlet that is positioned at the described destilling tower bottom of previous stage is connected with the liquid phase entrance of the described destilling tower that is positioned at rear one-level described in adjacent two-stage.
Further, described pipe-line system II comprises a house steward, and the gaseous phase outlet at destilling tower top is equipped with the arm being connected with described house steward described in every one-level.
Further, described house steward is provided with condenser.
Further, the carclazyte that described heating stirrer is provided with for adding atlapulgite adds entrance.
The beneficial effects of the utility model are:
White oil reclaiming system in the production of the utility model wet method lithium battery diaphragm, by extraction tank is set, can will extract as the white oil of lithium battery diaphragm pore former, then white oil mixed liquor extraction being obtained enters in distillation column system, through normal pressure, after rectification under vacuum, obtain the white oil of preliminary purification, then the white oil of preliminary purification is entered in heating stirrer, and add thermal agitation together with atlapulgite, white oil is decoloured and removes oxide process, finally white oil is injected to the secondary filter of white oil accurate filter, obtain the white oil product that purity meets instructions for use, therefore, by the white oil reclaiming system in the production of the utility model wet method lithium battery diaphragm is set, can recycle white oil in wet method lithium battery diaphragm production process, and then reduce the production cost of lithium battery diaphragm, improve the market competitiveness.
Brief description of the drawings
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, the utility model provides following accompanying drawing to describe:
Fig. 1 is the production procedure block diagram of existing wet method lithium battery diaphragm;
Fig. 2 is the structural representation of the white oil reclaiming system embodiment during the utility model wet method lithium battery diaphragm is produced;
Fig. 3 is the structural representation of the present embodiment distillation column system.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in Figure 2, be the structural representation of white oil reclaiming system embodiment of the utility model wet method lithium battery diaphragm in producing.White oil reclaiming system in the production of the present embodiment wet method lithium battery diaphragm, comprise be arranged on biaxial tension equipment 5 rear sides and for extract the extraction tank 1 of white oil, for the distillation column system 2 of preliminary purification white oil, for white oil decolour and remove white oil oxidizing component heating stirrer 3 and for filtering the white oil accurate filter 4 of purification white oil, extraction tank 1, distillation column system 2, heating stirrer 3 and white oil accurate filter 4 are connected successively.Preferably, the carclazyte that heating stirrer 3 is provided with for adding atlapulgite adds entrance 3a.
Preferably, white oil accurate filter 4 and feed intake and be provided with the pipe-line system I 7 recycling for white oil between dispensing equipment 6, can directly directly be transported to the white oil of recovery during the batching that feeds intake that wet method lithium battery diaphragm produces arranges convenient utilization.
Further, between distillation column system 2 and extraction tank 1, be provided with for vapor phase solvent condensation and be back to the pipe-line system II 8 that extraction tank 1 recycles.And distillation column system 2 comprises at least two-step distillation tower 2a that series connection arranges, and the distillation column system 2 of the present embodiment comprises two-step distillation tower 2a, and the progression of destilling tower 2a can arrange according to actual needs, and its principle is suitable, is not repeated.In the distillation column system 2 of the present embodiment, described in adjacent two-stage in destilling tower, the liquid-phase outlet 2b that is positioned at the destilling tower 2a bottom of previous stage is connected with the liquid phase entrance 2c of the destilling tower 2a that is positioned at rear one-level, and white oil is retained in and in liquid phase, enters next collection destilling tower 2a continuation distilation.The pipe-line system II of the present embodiment comprises a house steward 8a, and the gaseous phase outlet 2d at every one-level destilling tower 2a top is equipped with the arm 8b being connected with house steward 8a, and house steward 8a is provided with condenser 9, for vapor phase solvent condensation and be directly inputted into extraction tank 1 and recycle.
White oil reclaiming system in the production of the present embodiment wet method lithium battery diaphragm, by extraction tank 1 is set, can will extract as the white oil of lithium battery diaphragm pore former, then white oil mixed liquor extraction being obtained enters in distillation column system 2, through normal pressure, after rectification under vacuum, obtain the white oil of preliminary purification, then the white oil of preliminary purification is entered in heating stirrer 3, and add thermal agitation together with atlapulgite, white oil is decoloured and removes oxide process, finally white oil is injected to 4 secondary filters of white oil accurate filter, obtain the white oil product that purity meets instructions for use, therefore, by the white oil reclaiming system in the production of the present embodiment wet method lithium battery diaphragm is set, can recycle white oil in wet method lithium battery diaphragm production process, and then reduce the production cost of lithium battery diaphragm, improve the market competitiveness.
Finally explanation is, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the utility model claims limited range.
Claims (8)
1. the white oil reclaiming system in a wet method lithium battery diaphragm production, it is characterized in that: comprise be arranged on biaxial tension equipment rear side and for extract the extraction tank of white oil, for the distillation column system of preliminary purification white oil, for white oil decolour and remove white oil oxidizing component heating stirrer and for filtering the white oil accurate filter of purification white oil, described extraction tank, distillation column system, heating stirrer and white oil accurate filter are connected successively.
2. the white oil reclaiming system of wet method lithium battery diaphragm in producing according to claim 1, is characterized in that: described white oil accurate filter and feed intake and be provided with the pipe-line system I recycling for white oil between dispensing equipment.
3. the white oil reclaiming system in producing according to wet method lithium battery diaphragm described in claim 1 or 2, is characterized in that: between described distillation column system and described extraction tank, be provided with for vapor phase solvent condensation and be back to the pipe-line system II that described extraction tank recycles.
According to claim 3 wet method lithium battery diaphragm produce in white oil reclaiming system, it is characterized in that: described distillation column system comprise series connection arrange at least two-step distillation tower.
According to claim 4 wet method lithium battery diaphragm produce in white oil reclaiming system, it is characterized in that: described in adjacent two-stage, in destilling tower, the liquid-phase outlet that is positioned at the described destilling tower bottom of previous stage is connected with the liquid phase entrance of the described destilling tower that is positioned at rear one-level.
6. the white oil reclaiming system of wet method lithium battery diaphragm in producing according to claim 5, is characterized in that: described pipe-line system II comprises a house steward, the gaseous phase outlet at destilling tower top is equipped with the arm being connected with described house steward described in every one-level.
According to claim 6 wet method lithium battery diaphragm produce in white oil reclaiming system, it is characterized in that: described house steward is provided with condenser.
According to claim 1 wet method lithium battery diaphragm produce in white oil reclaiming system, it is characterized in that: the carclazyte that described heating stirrer is provided with for adding atlapulgite adds entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214141.9U CN203839481U (en) | 2014-04-29 | 2014-04-29 | White oil recycling system in wet-process lithium battery diaphragm production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214141.9U CN203839481U (en) | 2014-04-29 | 2014-04-29 | White oil recycling system in wet-process lithium battery diaphragm production |
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| Publication Number | Publication Date |
|---|---|
| CN203839481U true CN203839481U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420214141.9U Expired - Fee Related CN203839481U (en) | 2014-04-29 | 2014-04-29 | White oil recycling system in wet-process lithium battery diaphragm production |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108753354A (en) * | 2018-06-22 | 2018-11-06 | 河北金力新能源科技股份有限公司 | The impurity-removing method of white oil is discarded in a kind of lithium electric separator technique based on wet production |
| CN110066684A (en) * | 2018-01-24 | 2019-07-30 | 北京先锋创新科技发展有限公司 | A kind of recovery method of lithium battery diaphragm white oil |
| CN114058403A (en) * | 2021-10-15 | 2022-02-18 | 中材锂膜有限公司 | Method for purifying white oil in lithium battery diaphragm industry |
| CN116742181A (en) * | 2023-08-03 | 2023-09-12 | 四川华洁嘉业环保科技有限责任公司 | Recycling method of lithium secondary battery diaphragm |
| CN117096550A (en) * | 2023-10-19 | 2023-11-21 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for recovering oil-containing waste film from wet lithium battery diaphragm by dropping liquid |
-
2014
- 2014-04-29 CN CN201420214141.9U patent/CN203839481U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066684A (en) * | 2018-01-24 | 2019-07-30 | 北京先锋创新科技发展有限公司 | A kind of recovery method of lithium battery diaphragm white oil |
| CN108753354A (en) * | 2018-06-22 | 2018-11-06 | 河北金力新能源科技股份有限公司 | The impurity-removing method of white oil is discarded in a kind of lithium electric separator technique based on wet production |
| CN114058403A (en) * | 2021-10-15 | 2022-02-18 | 中材锂膜有限公司 | Method for purifying white oil in lithium battery diaphragm industry |
| CN116742181A (en) * | 2023-08-03 | 2023-09-12 | 四川华洁嘉业环保科技有限责任公司 | Recycling method of lithium secondary battery diaphragm |
| CN116742181B (en) * | 2023-08-03 | 2024-04-05 | 四川华洁嘉业环保科技有限责任公司 | Recycling method of lithium secondary battery diaphragm |
| CN117096550A (en) * | 2023-10-19 | 2023-11-21 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for recovering oil-containing waste film from wet lithium battery diaphragm by dropping liquid |
| CN117096550B (en) * | 2023-10-19 | 2024-01-26 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for recovering oil-containing waste film from wet lithium battery diaphragm by dropping liquid |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20180429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |