CN203845819U - Manufacturing system of low-dewpoint nitrogen for lithium battery - Google Patents
Manufacturing system of low-dewpoint nitrogen for lithium battery Download PDFInfo
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- CN203845819U CN203845819U CN201420179614.6U CN201420179614U CN203845819U CN 203845819 U CN203845819 U CN 203845819U CN 201420179614 U CN201420179614 U CN 201420179614U CN 203845819 U CN203845819 U CN 203845819U
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Abstract
The utility model discloses a manufacturing system of low-dewpoint nitrogen for a lithium battery. The manufacturing system comprises an air purification device and a nitrogen making device, wherein the air purification device comprises an air compressor, an air tank, a refrigerated air dryer, an activated carbon tower, an air buffer tank and an adsorptive dryer, the outlet of the air compressor is connected with the inlet of the air tank, the outlet of the air tank is connected with the inlet of the refrigerated air dryer, the outlet of the refrigerated air dryer is connected with the inlet of the activated carbon tower, the outlet of the activated carbon tower is connected with the inlet of an air compression tank, and the outlet of the air compression tank is connected with the nitrogen making device; the nitrogen making device consists of a pressure swing adsorber and a nitrogen buffer tank, the inlet of the pressure swing adsorber is connected with the outlet of the adsorption dryer in the air purification device, and the outlet of the pressure swing adsorber is connected with the nitrogen buffer tank. When the manufacturing system is applied in the production of lithium batteries, the dewpoint of unit nitrogen can be reduced, the drying degree of the environment can be improved, the dewpoint of nitrogen can be reduced to -65 DEG C, the requirement of lower moisture content in the production of lithium batteries can be achieved, the oxidization reaction of raw materials can be reduced, and the production quality of the lithium batteries can be improved.
Description
Technical field
The utility model relates to a kind of manufacturing system for the needed low dew point nitrogen of lithium cell manufacturing processed.
Background technology
Lithium cell in process of production some parts need to carry out drying treatment, and for example battery core or the housing etc. of sealing, fluid injection process operations, therefore require very harsh for moisture in air in workshop.Once moisture content exceeds standard, moisture can be absorbed by battery, causes battery tympanites, leakage and when battery operated, can produce electrochemical effect the reaction that produces the damage lithium cell performances such as hydrofluoric acid.The normal way adopting is in drying shed, to carry out the operations such as fluid injection at present.Battery seal can be transported to battery in glove box after drying, in battery liquid-filling glove box, be battery and the extraneous place contacting, current way is that glove box is rushed to nitrogen, but in view of the production of nitrogen in prior art still exists the defect that dew point is high, the equipment of therefore inventing a kind of nitrogen of producing low dew point is particularly important.
Utility model content
The utility model technical issues that need to address be to provide a kind of provide low dew point nitrogen low dew point nitrogen preparation system for lithium cell.
For addressing the above problem, technical solution adopted in the utility model is: low dew point nitrogen preparation system for a kind of lithium cell, comprise air cleaning unit and nitrogen-making device, wherein refining plant comprises air compressor machine, air vessel, cooling driers, activated carbon tower, air cushioning tank and absorption drier, air compressor machine outlet connects air vessel import, air vessel outlet connects cooling driers import, cooling driers outlet connects activated carbon tower import, activated carbon tower outlet connects the import of air compression tank, and the outlet of air compression tank connects nitrogen-making device; Nitrogen-making device comprises pressure-variable adsorption device and nitrogen buffer tank, and the import of pressure-variable adsorption device connects the outlet of absorption drier in air cleaning unit, and the outlet of pressure-variable adsorption device connects nitrogen buffer tank.
Described absorption drier comprises two adsorption towers.
Described pressure-variable adsorption device comprises two pressure-swing absorbers, in parallel use.
Sorbent material in described pressure-swing absorber is carbonaceous molecular sieve or modified RE X-type zeolite.
Between described air vessel and cooling driers, be provided with strainer.
The beneficial effect that adopts technique scheme to produce is: the utility model is provided with absorption drier between nitrogen-making device, structure, gas is carried out to depth drying, be applied in the production of lithium cell, reduce the dew point of unit nitrogen, improve environmental drying degree, can make the depoint depression of nitrogen to-65 DEG C, reach the requirement of lithium cell lower moisture content in producing, reduced the oxidizing reaction of raw material, ensured the quality of production of lithium cell.
Brief description of the drawings
Fig. 1 is the utility model equipment layout and schema;
Wherein: 1, air compressor machine, 2, air vessel, 3, cooling driers, 4, activated carbon tower, 5, air cushioning tank, 6, absorption drier, 7, nitrogen buffer tank, 8, adsorption tower, 9, pressure-swing absorber, 10, strainer.
Embodiment
Below in conjunction with accompanying drawing, utility model is described in further detail: as shown in Figure 1, this is novel comprises low dew point nitrogen preparation system for a kind of lithium cell, comprise air cleaning unit and nitrogen-making device, wherein refining plant comprises air compressor machine 1, air vessel 2, cooling driers 3, activated carbon tower 4, air cushioning tank 5 and absorption drier 6, air compressor machine 1 outlet connects air vessel 2 imports, between air vessel 2 and cooling driers 3, be provided with strainer 10, air vessel 2 outlets connect cooling driers 3 imports, cooling driers 3 outlets connect activated carbon tower 4 imports, activated carbon tower 4 outlets connect the import of air compression tank 5, the outlet of air compression tank 5 connects nitrogen-making device, nitrogen-making device comprises pressure-variable adsorption device and nitrogen buffer tank 7, the import of pressure-variable adsorption device connects the outlet of absorption drier 6 in air cleaning unit, the outlet of pressure-variable adsorption device connects nitrogen buffer tank 7, absorption drier 6 comprises two adsorption towers 8, pressure-variable adsorption device comprises two pressure-swing absorbers 9, in pressure-swing absorber 9, for sorbent material is carbonaceous molecular sieve, the nitrogen in nitrogen buffer tank 7, can deliver to glove box by pipeline.
Principle of work:
The first air compressor machine compression of air pressurization, temperature is reduced to≤45 DEG C after, make air anhydrous dustless without oil by three grades of accurate filters, cooling driers, after filtering, activated carbon adsorption device enters absorption drier again, process thereby pressurized air is carried out to continuously adsorption dry the gas that obtains depth drying, be finally imported into pressure change adsorption type nitrogen-making device, under the effect of pressure-variable adsorption, nitrogen oxygen is separated, thus effectively enrichment nitrogen.The sorbent material using is a kind of carbonaceous molecular sieve, due to kinetic effect, the rate of diffusion of oxygen on carbonaceous molecular sieve is apparently higher than nitrogen (rate of diffusion oxygen: nitrogen is 40: 1), and carbonaceous molecular sieve has very little micropore composition, and pore size distribution is between 0.3nm～1nm.Gas (oxygen) diffusion of small diameter is very fast, and the more molecular sieve solid phase that enters just can obtain the enrichment composition of nitrogen like this in gas phase, and nitrogen enters in nitrogen buffer tank by pipeline.This device adopts two adsorption towers to compose in parallel a pressure swing adsorption system, and pressurize alternately absorption and decompression desorption, make to obtain stable nitrogen gas stream.The nitrogen dew point finally making can arrive-65 DEG C.
Claims (5)
1. a low dew point nitrogen preparation system for lithium cell, it is characterized in that: it comprises air cleaning unit and nitrogen-making device, wherein refining plant comprises air compressor machine (1), air vessel (2), cooling driers (3), activated carbon tower (4), air cushioning tank (5) and absorption drier (6), air compressor machine (1) outlet connects air vessel (2) import, air vessel (2) outlet connects cooling driers (3) import, cooling driers (3) outlet connects activated carbon tower (4) import, activated carbon tower (4) outlet connects the import of air compression tank (5), the outlet of air compression tank (5) connects nitrogen-making device, nitrogen-making device comprises pressure-variable adsorption device and nitrogen buffer tank (7), and the import of pressure-variable adsorption device connects the outlet of absorption drier (6) in air cleaning unit, and the outlet of pressure-variable adsorption device connects nitrogen buffer tank (7).
2. low dew point nitrogen preparation system for a kind of lithium cell according to claim 1, is characterized in that: described absorption drier (6) comprises two adsorption towers (8).
3. low dew point nitrogen preparation system for a kind of lithium cell according to claim 1, is characterized in that: described pressure-variable adsorption device comprises two pressure-swing absorbers (9), in parallel use.
4. low dew point nitrogen preparation system for a kind of lithium cell according to claim 3, is characterized in that: the sorbent material in described pressure-swing absorber (9) is carbonaceous molecular sieve or modified RE X-type zeolite.
5. according to low dew point nitrogen preparation system for a kind of lithium cell described in claim 1-4 any one, it is characterized in that: between described air vessel (2) and cooling driers (3), be provided with strainer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179614.6U CN203845819U (en) | 2014-04-15 | 2014-04-15 | Manufacturing system of low-dewpoint nitrogen for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179614.6U CN203845819U (en) | 2014-04-15 | 2014-04-15 | Manufacturing system of low-dewpoint nitrogen for lithium battery |
Publications (1)
| Publication Number | Publication Date |
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| CN203845819U true CN203845819U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420179614.6U Expired - Fee Related CN203845819U (en) | 2014-04-15 | 2014-04-15 | Manufacturing system of low-dewpoint nitrogen for lithium battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179344A (en) * | 2018-09-29 | 2019-01-11 | 凯迈（洛阳）气源有限公司 | A kind of three proofings high-purity nitrogen generation system |
| CN113041778A (en) * | 2021-03-24 | 2021-06-29 | 江苏恩铭机电科技有限公司 | Low dew point compressed air purifier's adsorption tower |
-
2014
- 2014-04-15 CN CN201420179614.6U patent/CN203845819U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179344A (en) * | 2018-09-29 | 2019-01-11 | 凯迈（洛阳）气源有限公司 | A kind of three proofings high-purity nitrogen generation system |
| CN113041778A (en) * | 2021-03-24 | 2021-06-29 | 江苏恩铭机电科技有限公司 | Low dew point compressed air purifier's adsorption tower |
| CN113041778B (en) * | 2021-03-24 | 2021-12-17 | 江苏恩铭机电科技有限公司 | Low dew point compressed air purifier's adsorption tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20170415 |