CN102085421A - Waste gas recovery device of lithium battery pole piece coating apparatus - Google Patents
Waste gas recovery device of lithium battery pole piece coating apparatus Download PDFInfo
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- CN102085421A CN102085421A CN2010105980262A CN201010598026A CN102085421A CN 102085421 A CN102085421 A CN 102085421A CN 2010105980262 A CN2010105980262 A CN 2010105980262A CN 201010598026 A CN201010598026 A CN 201010598026A CN 102085421 A CN102085421 A CN 102085421A
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- solvent
- waste gas
- storage tank
- nmp
- condenser
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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
- 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
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Abstract
The invention discloses a waste gas recovery device of a lithium battery pole piece coating apparatus. Efficient and emission-free recovery is conducted by adopting an increasing and condensation method. The waste gas recovery device comprises an air suction cover, a supercharger, a condenser, a solvent storage tank, a solvent pump and a solvent recovery barrel, wherein the air suction cover is arranged above a coating apparatus; the air suction cover, the supercharger and the condenser are sequentially connected through an air duct; the condenser is further connected with the solvent storage tank through a liquid duct; the solvent pump is connected with the solvent storage tank through a pipeline; the solvent pump is further connected with the solvent recovery barrel; and a waste gas outlet is arranged on the solvent storage tank. The NMP (N-methyl-pyrrolidone) solvent recovery and recycling system provided by the invention is mainly used for adsorbing the NMP waste gas discharged in the coating production process, and the NMP in the waste gas is condensed into a liquid which is recovered and recycled. If calculated according to the average daily usage of NMP of 160 kilograms for 2-batch production, 915.2 thousand (128*52*5*27.5) yuan is saved every year, wherein 52 represents 52 weeks every year, 5 represents 5 days every week and 27.5 represents 27.5 yuan per kilogram, thereby remarkably saving the production cost of an enterprise, saving energy and realizing high efficiency.
Description
Technical field
The present invention relates to a kind of gas recovery system, relate in particular to a kind of retracting device that is used to reclaim NMP (N-methyl pyrrolidone) waste gas.
Background technology
N-methyl pyrrolidone (NMP) is a colourless transparent liquid, 202 ℃ of boiling points, and 95 ℃ of flash-points can be miscible with water, is dissolved in ether, and acetone and various organic solvent have the ammonia flavor slightly, and stable chemical performance is not corroded carbon steel, aluminium, and copper is corrosive slightly.It is low to have viscosity, chemical stability and Heat stability is good, the polarity height, volatility is low, can with the unlimited advantage such as miscible of water and many organic solvents.At present, to used, dirty useless methyl pyrrolidone adds the vacuum decompression system by solvent recovery machine mostly and recycles.It is according to being based on: because of its boiling point than higher, so can not adopt direct recovery method,, can reduce the recovery heating-up temperature by vacuum decompression, guarantee to reclaim quality, improve and reclaim safety coefficient
At the lithium battery production field, anode sizing agent generally adopts the NMP liquid flux, the size of its utilization rate is the cardinal task that each battery production manufacturer is concerned about, when coating is finished and is produced in a collection of anode sizing agent design, usually traditional method is to adopt the method for high temperature heating to remove nmp solvent (120 ℃ of temperature, time 4min).NMP loses with the form of gas, has consumed a large amount of nmp solvents in the whole process, has also been wasted with the nmp solvent of gas evaporation.Simultaneously, the utmost point is unfavorable for energy-conserving and environment-protective.
Summary of the invention
The present invention is directed to above problem, a kind of waste gas recovering device that adopts increase, condensation method to carry out efficiently, do not have the lithium battery pole slice coating apparatus of discharging recovery is provided.
Technical scheme of the present invention is: comprise suspended hood, supercharger, condenser, solvent storage tank, solvent pump and solvent recovery bucket; Described suspended hood is located at the top of described coating apparatus, and suspended hood, supercharger and condenser adopt breather line to link to each other successively; Described condenser connects described solvent storage tank by the fluid-through tube road again, and described solvent pump connects the solvent storage tank by pipeline, and described solvent pump connects the solvent recovery bucket again; Described solvent storage tank is provided with waste gas outlet.
Described waste gas outlet place also is provided with filter.
Nmp solvent of the present invention reclaims the cycling and reutilization system, is mainly used in the NMP waste gas of discharging in the absorption coating production process, and utilizes condensation that the NMP in the waste gas is become the liquids recovery cycling and reutilization.In the application process, open coating machine and NMP retracting device simultaneously, after coating machine starts, with the aluminium strip of slurry with 4m/min at the uniform velocity, in the coater oven of 120 ℃ of constant temperature, pass through, because therefore temperature drift in the baking oven can produce a large amount of steams, this steam forms water conservancy diversion through blower fan, pass through condenser system, will be converted into liquid NMP and reclaim, the NMP liquid after will reclaiming at last puts into production use once more, and recovery utilization rate is greater than 80%.Greatly reduce production cost on this basis, as every batch of consumption that uses 80KgNMP just can reclaim 64KgNMP, and the actual production consumption only is 16KG/ batch, has saved cost greatly.If producing 2 batches of NMP consumptions every day according to my company average is 160Kg, economize on the use of funds every year: ten thousand yuan of 128*52*5*27.5=91.52 (annual 52 weeks, 5 days weekly, 27.5 yuan of calculating of per kilogram), saved a large amount of production costs, efficient energy-saving to enterprise.
Description of drawings
Fig. 1 is a structural representation of the present invention
1 is coating apparatus among the figure, the 2nd, and suspended hood, the 3rd, breather line, the 4th, solvent storage tank, the 5th, waste gas outlet, the 6th, solvent pump, the 7th, solvent recovery bucket, the 8th, cooling tower, the 9th, condenser, the 10th, supercharger.
The specific embodiment
The present invention comprises suspended hood 2, supercharger 10, condenser 9 (coupled have cooling tower 8), solvent storage tank 4, solvent pump 6 and solvent recovery bucket 7 as shown in Figure 1; Described suspended hood 2 is located at the top of described coating apparatus 1, and suspended hood 2, supercharger 10 and condenser 9 adopt breather line 3 to link to each other successively; Described condenser 9 connects described solvent storage tank 4 by the fluid-through tube road again, and described solvent pump 6 connects solvent storage tank 4 by pipeline, and described solvent pump 6 connects solvent recovery bucket 7 again; Described solvent storage tank 4 is provided with waste gas outlet 7.
Described waste gas outlet place 7 also is provided with filter.
The present invention is mainly used in vaporized gas when reclaiming the pole piece oven dry, by suspended hood (containing exhaust blower), feed back to pneumatic filter, by supercharger, after the mutual exchange cooling of existing NMP gas through condenser and cooling tower, wherein fraction gas is the pure qi (oxygen) discharging again, most of gas becomes liquid, through solvent pump, flow into the solvent storage tank and store recycling.
Claims (2)
1. the waste gas recovering device of a lithium battery pole slice coating apparatus is characterized in that, comprises suspended hood, supercharger, condenser, solvent storage tank, solvent pump and solvent recovery bucket; Described suspended hood is located at the top of described coating apparatus, and suspended hood, supercharger and condenser adopt breather line to link to each other successively; Described condenser connects described solvent storage tank by the fluid-through tube road again, and described solvent pump connects the solvent storage tank by pipeline, and described solvent pump connects the solvent recovery bucket again; Described solvent storage tank is provided with waste gas outlet.
2. the waste gas recovering device of a kind of lithium battery pole slice coating apparatus according to claim 1 is characterized in that, described waste gas outlet place also is provided with filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105980262A CN102085421A (en) | 2010-12-20 | 2010-12-20 | Waste gas recovery device of lithium battery pole piece coating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105980262A CN102085421A (en) | 2010-12-20 | 2010-12-20 | Waste gas recovery device of lithium battery pole piece coating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102085421A true CN102085421A (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105980262A Pending CN102085421A (en) | 2010-12-20 | 2010-12-20 | Waste gas recovery device of lithium battery pole piece coating apparatus |
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| Country | Link |
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| CN (1) | CN102085421A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107616A (en) * | 2014-08-14 | 2014-10-22 | 叶大煜 | NMP (N-Methyl Pyrrolidone) gas treating equipment and treating process thereof |
| CN107376518A (en) * | 2017-08-29 | 2017-11-24 | 浙江万好万家智能设备股份有限公司 | A kind of NMP filters |
| CN107400076A (en) * | 2016-05-19 | 2017-11-28 | 张建岗 | A kind of NMP in working procedure of coating lithium ion cell recovery essence steams purifying plant |
-
2010
- 2010-12-20 CN CN2010105980262A patent/CN102085421A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107616A (en) * | 2014-08-14 | 2014-10-22 | 叶大煜 | NMP (N-Methyl Pyrrolidone) gas treating equipment and treating process thereof |
| CN107400076A (en) * | 2016-05-19 | 2017-11-28 | 张建岗 | A kind of NMP in working procedure of coating lithium ion cell recovery essence steams purifying plant |
| CN107376518A (en) * | 2017-08-29 | 2017-11-24 | 浙江万好万家智能设备股份有限公司 | A kind of NMP filters |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110608 |