CN107400076A - A kind of NMP in working procedure of coating lithium ion cell recovery essence steams purifying plant - Google Patents
A kind of NMP in working procedure of coating lithium ion cell recovery essence steams purifying plant Download PDFInfo
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- CN107400076A CN107400076A CN201610368432.7A CN201610368432A CN107400076A CN 107400076 A CN107400076 A CN 107400076A CN 201610368432 A CN201610368432 A CN 201610368432A CN 107400076 A CN107400076 A CN 107400076A
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- heat exchanger
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- 238000011084 recovery Methods 0.000 title claims abstract description 43
- 239000011248 coating agent Substances 0.000 title claims abstract description 41
- 238000000576 coating method Methods 0.000 title claims abstract description 41
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000004411 aluminium Substances 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- 239000002699 waste material Substances 0.000 claims abstract description 12
- 239000002918 waste heat Substances 0.000 claims description 29
- 230000008929 regeneration Effects 0.000 claims description 24
- 238000011069 regeneration method Methods 0.000 claims description 24
- 238000001179 sorption measurement Methods 0.000 claims description 23
- 238000003795 desorption Methods 0.000 claims description 20
- 239000003960 organic solvent Substances 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 abstract description 16
- 238000000746 purification Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000001351 cycling effect Effects 0.000 abstract description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 50
- 239000000686 essence Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- H01M10/058—Construction or manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D207/24—Oxygen or sulfur atoms
- C07D207/26—2-Pyrrolidones
- C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
- C07D207/267—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0208—Other waste gases from fuel cells
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of NMP in working procedure of coating lithium ion cell recovery essence steams purifying plant, including coating machine, heat exchanger, runner, essence steam equipment for purifying, waste liquid tank, No.1 solution feed pump, it is characterised in that：The heat exchanger includes heat exchanger high temperature inlet, heat exchanger low-temperature outlet, heat exchanger dry air entrance, the outlet of heat exchanger dry air, the side of described coating machine or so two is provided with coater head, coating tail, exhaust duct is provided with above the coating machine, exhaust duct connects exhaust blower, exhaust blower connects heat exchanger high temperature inlet by exhaust duct, and air supply duct is provided with below coating machine.The present invention is used to adsorb the NMP waste gas discharged in coating lithium ion cell production process, and the NMP in waste gas is become into liquids recovery cycling and reutilization using condenser, the surge tank being provided between aluminium fin-plate type condenser and cooler, the purpose of concentration can be reached, so that NMP concentration is high, purification rate is high.
Description
Technical field
The present invention relates to waste gas recovery technical field, more particularly to a kind of NMP in working procedure of coating lithium ion cell to reclaim
Essence steams purifying plant.
Background technology
1-METHYLPYRROLIDONE (NMP) is colourless transparent liquid, 202 DEG C of boiling point, 95 DEG C of flash-point, can be mixed with water
It is molten, it is dissolved in ether, acetone and various organic solvents, slightly ammonia taste, stable chemical performance, to carbon steel, aluminium
Do not corrode, to copper slightly corrosivity.Low with viscosity, chemical stability and heat endurance are good, and polarity is high,
Volatility is low, can be with water and infinitely miscible many organic solvents the advantages that.
In lithium battery production field, anode sizing agent typically uses NMP liquid fluxs, and the size of its utilization rate is
Each battery production manufacturer cardinal task of concern, coating is completed and produces when a collection of anode sizing agent designs
When, traditional method is to remove nmp solvent (120 DEG C of temperature, time using the method for high-temperature heating
4min).NMP loses in gaseous form, substantial amounts of nmp solvent is consumed in whole process, with gas
The nmp solvent of evacuator body is also wasted.Meanwhile pole is unfavorable for energy-conserving and environment-protective.
At present, during nmp solvent essence steams purification, usually mixed with the liquid of heating Guan Tongxu recovery
Together, NMP gases volatilize together with water vapour after heating, and such NMP losses are big, and concentration is low, steam
Amount loss is big.
The content of the invention
The present invention provides a kind of NMP in working procedure of coating lithium ion cell recovery essence and steams purifying plant, for adsorbing lithium
The NMP waste gas discharged in ion battery coating production process, and using aluminium fin-plate type condenser by waste gas
NMP become liquids recovery cycling and reutilization；The hot-air progress heat exchange to coating machine discharge reaches simultaneously
The purpose of recuperation of heat, improves energy utilization efficiency；Aluminium fin-plate type condenser can carry out cold twice with cooler
It is solidifying so that NMP organic efficiencies are high, the surge tank being provided between aluminium fin-plate type condenser and cooler, can be with
Reach the purpose of concentration so that NMP concentration is high, and purification rate is high.
The technical scheme is that：A kind of NMP in working procedure of coating lithium ion cell recovery essence steams purifying plant,
Equipment for purifying, waste liquid tank, No.1 solution feed pump, its feature are steamed including coating machine, heat exchanger, runner, essence
It is：The heat exchanger, which includes heat exchanger high temperature inlet, heat exchanger low-temperature outlet, heat exchanger, to be done
Air intake, two sides of heat exchanger dry air outlet, the coating machine or so are provided with coater head, coating machine
Tail, the coating machine top are provided with exhaust duct, exhaust duct connection exhaust blower, and exhaust blower passes through exhaust duct
Road connects heat exchanger high temperature inlet, and air supply duct is provided with below coating machine, and air supply duct connects breeze fan,
Breeze fan connects heat exchanger dry air by air supply duct and exported, and the runner is provided with adsorption zone, taken off
Attached area and waste heat recovery area, described adsorption zone the right and left be respectively arranged with organic solvent enter adsorption zone pipeline,
Pure air pipeline, by organic solvent enter adsorption zone pipeline be linked in sequence filter, secondary surface cooler,
First-surface cooler, heat exchanger low-temperature outlet, by pure air pipeline be linked in sequence circulating fan,
Heat exchanger dry air entrance, described desorption area's the right and left are respectively arranged with concentration blower fan and electric heater,
Concentration blower fan goes out to be desorbed area pipeline one end connection desorption area by regeneration air, and other end connection heat exchanger is low
Temperature outlet, waste heat recovery area the right and left are respectively arranged with regeneration air and enter waste heat recovery area pipeline and again
Raw air goes out waste heat recovery area pipeline, and regeneration air goes out waste heat recovery area pipeline connection electric heater, electrical heating
Device enters to be desorbed pipeline connection desorption area of area by regeneration air, and it is empty that regeneration is connected between filter and adsorption zone
Qi Jin waste heat recoveries area pipeline, filter, secondary surface cooler, first-surface cooler pass through fluid-through tube
Road is connected with waste liquid tank, and the essence, which steams equipment for purifying, includes tower reactor and tower body, and the tower reactor and tower body integrally connect
Connect, described tower reactor one end is provided with steam inlet, and the tower reactor is provided with thermometer boss, and the tower reactor is another
End is provided with dilute nmp solution import, and dilute nmp solution import passes through pipeline and dilute nmp solution high position storage tank
Connection, the tower body top are provided with steam (vapor) outlet, and the tower body top side is provided with refluxing opening, the steam
Lead to aluminium fin-plate type condenser for outlet, and the aluminium fin-plate type condenser bottom is provided with condensate outlet and NMP is molten
Liquid exports, and lead to surge tank for condensate outlet and the nmp solution outlet, the buffering pot bottom and cooling
Device connects, and the cooler bottom exports provided with dense nmp solution, the dense nmp solution outlet and finished pot
Connection, the surge tank side are provided with condenser pipe, and the condenser pipe connects with refluxing opening, is set in the tower reactor
There is pressure gauge, the tower body is provided with maintenance ladder, and the dense nmp solution outlet is provided with current divider, waste liquid
Tank is connected with No.1 solution feed pump, and No.1 solution feed pump is connected with dilute nmp solution high position storage tank.
Beneficial effects of the present invention are：The present invention provides a kind of NMP in working procedure of coating lithium ion cell recovery essence and steamed
Purifying plant, for adsorbing the NMP waste gas discharged in coating lithium ion cell production process, and utilize aluminium
NMP in waste gas is become liquids recovery cycling and reutilization by fin-plate type condenser；Simultaneously to coating machine discharge
Hot-air carries out the purpose that heat exchange reaches recuperation of heat, improves energy utilization efficiency；Aluminium fin-plate type condenser
Can be condensed twice with cooler so that NMP organic efficiencies are high, aluminium fin-plate type condenser and cooler it
Between the surge tank that is provided with, the purpose of concentration can be reached so that NMP concentration is high, and purification rate is high.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the mplifying structure schematic diagram that the essence of part 5 steams equipment for purifying in Fig. 1.
In Fig. 1, Fig. 2：1. coating machine, 2. breeze fans, 3. exhaust blowers, 4. heat exchangers, 5. essences, which are steamed, to be carried
Pure equipment, 6. desorption areas, 7. runners, 8. waste heat recovery areas, 9. adsorption zones, 10. first-surface coolers,
11. secondary surface cooler, 12. filters, 13. regeneration airs enter waste heat recovery area pipeline, 14. is organic molten
Adsorption zone pipeline is entered in agent, 15. pure air pipelines, 16. electric heaters, 17. circulating fans, 18. waste liquid tanks,
19. regeneration air goes out waste heat recovery area pipeline, 20. exhaust ducts, 21. air supply ducts, 22. regeneration airs enter
Area's pipeline is desorbed, 23. regeneration airs go out to be desorbed area's pipeline, and 24. coater heads, 25. coating tails, 26. is dense
Contracting blower fan, 27. No.1 solution feed pumps, 41. heat exchanger high temperature inlets, 42. heat exchanger low-temperature outlets, 43.
Heat exchanger dry air entrance, the outlet of 44. heat exchanger dry air, 501. tower reactors, 502. tower bodies, 503. inspections
Repair ladder, 504. steam inlets, 505. thermometer bosses, 506. dilute nmp solution imports, 507. pipelines, 508.
Dilute nmp solution high position storage tank, 509. steam (vapor) outlets, 510. refluxing openings, 511. aluminium fin-plate type condensers, 512.
Condensate outlet, 513.NMP tapholes, 514. surge tanks, 515. coolers, 516. dense nmp solutions
Outlet, 517. finished pots, 518. condenser pipes, 519. current dividers, 520. pressure gauges,
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the present invention is that a kind of NMP in working procedure of coating lithium ion cell recovery essence steams purification dress
Put, including coating machine 1, heat exchanger 4, runner 7, essence are steamed equipment for purifying 5, waste liquid tank 18, No.1 and supplied
Liquid pump 27, it is characterised in that：It is low that the heat exchanger 4 includes heat exchanger high temperature inlet 41, heat exchanger
Temperature outlet 42, heat exchanger dry air entrance 43, heat exchanger dry air outlet 44, the coating machine 1 are left
Right two sides are provided with coater head 24, coating tail 25, and the top of coating machine 1 is provided with exhaust duct 20, arranged
Wind pipeline 20 connects exhaust blower 3, and exhaust blower 3 connects heat exchanger high temperature inlet 41 by exhaust duct 20,
The lower section of coating machine 1 is provided with air supply duct 21, and air supply duct 21 connects breeze fan 2, and breeze fan 2 passes through
Air supply duct 21 connects heat exchanger dry air outlet 44, and the runner 7 is provided with adsorption zone 9, desorption area
6 and waste heat recovery area 8, described the right and left of adsorption zone 9 be respectively arranged with organic solvent enter adsorption zone pipeline 14,
Pure air pipeline 15, adsorption zone pipeline 14 is entered by organic solvent and is linked in sequence filter 12, secondary table
Aerator 11, first-surface cooler 10, heat exchanger low-temperature outlet 42, pass through pure air pipeline
15 are linked in sequence circulating fan 17, heat exchanger dry air entrance 43, desorption the right and left of area 6 difference
Concentration blower fan 26 and electric heater 16 are provided with, concentration blower fan 26 goes out to be desorbed area's pipeline 23 by regeneration air
One end connection desorption area 6, other end connection heat exchanger low-temperature outlet 42, the waste heat recovery area 8 or so
Both sides are respectively arranged with that regeneration air enters waste heat recovery area pipeline 13 and regeneration air goes out waste heat recovery area pipeline
19, regeneration air goes out waste heat recovery area pipeline 19 and connects electric heater 16, and electric heater 16 is empty by regenerating
Gas enters to be desorbed the connection desorption of area's pipeline 22 area 6, is connected with regeneration air between filter 12 and adsorption zone 9 and enters
Waste heat recovery area pipeline 13, filter 12, secondary surface cooler 11, first-surface cooler 10 pass through
Fluid-through tube road is connected with waste liquid tank 18, and the essence, which steams equipment for purifying 5, includes tower reactor 501 and tower body 502, institute
Tower reactor 501 and the integrally connected of tower body 502 are stated, described one end of tower reactor 501 is provided with steam inlet 504, the tower
Kettle 501 is provided with thermometer boss 505, and the other end of tower reactor 501 is provided with dilute nmp solution import 506,
Dilute nmp solution import 506 is connected by pipeline 507 with dilute nmp solution high position storage tank 508, described
The top of tower body 502 is provided with steam (vapor) outlet 509, and the top side of tower body 502 is provided with refluxing opening 510, described
Steam (vapor) outlet 509 leads to aluminium fin-plate type condenser 511, and the bottom of aluminium fin-plate type condenser 511 is provided with condensation
Liquid outlet 512 and nmp solution outlet 513, condensate outlet 512 and the nmp solution outlet 513 are logical
To surge tank 514, the bottom of surge tank 514 is connected with cooler 515, and the bottom of cooler 515 is set
There is dense nmp solution outlet 516, the dense nmp solution outlet 516 is connected with finished pot 517, described slow
Rush the side of tank 514 and be provided with condenser pipe 518, the condenser pipe 518 connects with refluxing opening 510, the tower reactor
501 are provided with pressure gauge 520, and the tower body 502 is provided with maintenance ladder 503, the dense nmp solution outlet
516 are provided with current divider 519, and waste liquid tank 18 is connected with No.1 solution feed pump 27, No.1 solution feed pump 27 with it is dilute
Nmp solution high position storage tank 508 connects.
The exit of filter 12 forms two-way wind path, and absorption wind path enters adsorption zone pipeline 14 by organic solvent
Mixing air is blowed into adsorption zone 9, passed through again by pure air pipeline 15 by the dry air of adsorption zone 9
Circulating fan 17 is sent to heat exchanger dry air entrance 43；
Desorption wind path enters waste heat recovery area pipeline 13 by regeneration air and delivers to waste heat recovery area 8, then passes through regeneration
Air, which goes out waste heat recovery area pipeline 19, to be delivered to electric heater 16 and is heated, and is then blowed to desorption area 6, is led to
Cross regeneration air and go out to be desorbed area's pipeline 23 and blow to heat exchanger low-temperature outlet 42；
In the rotation direction of runner 7, it is from upstream to downstream and sets gradually adsorption zone 9, desorption area 6 and waste heat time
Area 8 is received, by above-mentioned setting, is gone in the part of runner 7 that desorption area 6 is heated by electric heater 16 remaining
Behind heat recovery area 8, the wind that blows of desorption wind path first passes through waste heat recovery area 8 and passes through electric heater 16 again, from
And the amount of residual heat of the part of waste heat recovery area 8 is reused, improve energy utilization efficiency.
The course of work of the present invention：
(the air quantity 10000m when the exhaust blower 3 of coating machine 1 starts and sends out the waste gas hot blast containing NMP3/ h,
100 DEG C of temperature, the concentration 1000mg/m containing NMP3), start retracting device circulating fan 17, circulating fan
17 cold wind (air quantity 18000m3/ h, 25 DEG C of temperature, the concentration 50mg/m containing NMP3), into heat exchange
Device 4；The cold wind that waste gas hot blast containing NMP initially enters heat exchanger 4 and circulating fan 17 carries out heat exchange,
The waste gas hot blast temperature containing NMP is set to reduce (air quantity 10000m3/ h, 76 DEG C of temperature, the concentration containing NMP
1000mg/m3), with waste gas (the air quantity 2600m containing NMP from concentration blower fan 263/ h, 55 DEG C of temperature,
Concentration 3000mg/m containing NMP3) mixing, waste gas (the air quantity 12600m after mixing containing NMP3/ h, temperature
68 DEG C of degree, the concentration 1350mg/m containing NMP3), subsequently into first-surface cooler 10, secondary surface
Cooler 11 and recirculated water carry out heat exchange, first-surface cooler 10, secondary surface cooler 11 this
Two parts have substantial amounts of NMP to condense precipitation, after condensing into liquid, are discharged into waste liquid tank 18, make containing NMP's
Waste gas hot blast temperature reduces (air quantity 12600m3/ h, 20 DEG C of temperature, the concentration 500mg/m containing NMP3)；Again
Filtered by filter 12, go the removal of impurity；
A tail gas part (the air quantity 10000m containing NMP remaining afterwards3/ h, 20 DEG C of temperature, containing NMP's
Concentration 500mg/m3) enter adsorption zone 9, gas to be processed is needed after adsorption zone 9 flows through containing organic solvent
Become the gas of relative clean, the content of organic solvent reduces (air quantity 18000m in the gas after processing3/ h,
25 DEG C of temperature, the concentration 50mg/m containing NMP3) pass through the entrance heat exchanger dry air entrance of circulating fan 17
43；
Another part (air quantity 2600m3/ h, 20 DEG C of temperature, the concentration 500mg/m containing NMP3) enter waste heat
Recovery area 8, waste heat is absorbed, then (air quantity 2600m is heated through electric heater 163/ h, 140 DEG C of temperature) enter
Enter to be desorbed area 6, flowed through from the desorption area 6 of runner 7, because the desorption area 6 of runner 7 is reproduced air heating,
Organic solvent evaporation in desorption area 6 out takes away (air quantity 2600m with regeneration air3/ h, 55 DEG C of temperature,
Concentration 3000mg/m containing NMP3) with carrying out waste gas (the air quantity 10000m containing NMP of automatic heat-exchanger 43/ h,
76 DEG C of temperature, the concentration 1000mg/m containing NMP3) it is mixed into first-surface cooler 10, secondary surface
Cooler 11, there is substantial amounts of NMP to condense and separate out, and so on circulate.
Aluminium fin-plate type condenser 511 can be condensed twice with cooler 515 so that and NMP organic efficiencies are high,
The surge tank 514 being provided between aluminium fin-plate type condenser 511 and cooler 515, the purpose of concentration can be reached,
So that NMP concentration is high, purification rate is high.
As can be seen here, the present invention provides a kind of NMP in working procedure of coating lithium ion cell recovery essence steaming purifying plant,
For adsorbing the NMP waste gas discharged in coating lithium ion cell production process, and utilize the condensation of aluminium fin-plate type
NMP in waste gas is become liquids recovery cycling and reutilization by device；The hot-air of coating machine discharge is carried out simultaneously
Heat exchange reaches the purpose of recuperation of heat, improves energy utilization efficiency；Aluminium fin-plate type condenser can with cooler
Condensed twice so that NMP organic efficiencies are high, and what is be provided between aluminium fin-plate type condenser and cooler is slow
Tank is rushed, the purpose of concentration can be reached so that NMP concentration is high, and purification rate is high.
Claims (1)
1. a kind of NMP in working procedure of coating lithium ion cell recovery essence steams purifying plant, including coating machine, heat exchange
Device, runner, essence steam equipment for purifying, waste liquid tank, No.1 solution feed pump, it is characterised in that：The heat exchanger
Including heat exchanger high temperature inlet, heat exchanger low-temperature outlet, heat exchanger dry air entrance, heat exchanger
Dry air exports, and two sides of described coating machine or so are provided with coater head, coating tail, the coating machine top
Provided with exhaust duct, exhaust duct connection exhaust blower, exhaust blower connects heat exchanger high temperature by exhaust duct
Entrance, coating machine lower section are provided with air supply duct, air supply duct connection breeze fan, and breeze fan passes through air-supply
The outlet of pipeline connection heat exchanger dry air, the runner are provided with adsorption zone, desorption area and waste heat recovery area,
Described adsorption zone the right and left is respectively arranged with organic solvent and enters adsorption zone pipeline, pure air pipeline, passes through
Organic solvent enter adsorption zone pipeline be linked in sequence filter, secondary surface cooler, first-surface cooler,
Heat exchanger low-temperature outlet, entered by be linked in sequence circulating fan, heat exchanger dry air of pure air pipeline
Mouthful, described desorption area's the right and left is respectively arranged with concentration blower fan and electric heater, and concentration blower fan passes through regeneration
Air goes out to be desorbed area pipeline one end connection desorption area, other end connection heat exchanger low-temperature outlet, the waste heat
Recovery area the right and left is respectively arranged with that regeneration air enters waste heat recovery area pipeline and regeneration air goes out waste heat recovery
Area's pipeline, regeneration air go out waste heat recovery area pipeline connection electric heater, and electric heater is entered by regeneration air
Area's pipeline connection desorption area is desorbed, regeneration air is connected between filter and adsorption zone and enters waste heat recovery area pipe
Road, filter, secondary surface cooler, first-surface cooler are connected by fluid-through tube road with waste liquid tank,
The essence, which steams equipment for purifying, includes tower reactor and tower body, the tower reactor and tower body integrally connected, described tower reactor one end
Provided with steam inlet, the tower reactor is provided with thermometer boss, and the tower reactor other end is provided with dilute nmp solution
Import, dilute nmp solution import are connected by pipeline with dilute nmp solution high position storage tank, the tower body top
Portion is provided with steam (vapor) outlet, and the tower body top side is provided with refluxing opening, and the steam (vapor) outlet leads to aluminium fin-plate type
Condenser, the aluminium fin-plate type condenser bottom is provided with condensate outlet and nmp solution exports, the condensation
Liquid is exported and surge tank is led in nmp solution outlet, and the buffering pot bottom is connected with cooler, the cooling
Device bottom is exported provided with dense nmp solution, and the dense nmp solution outlet is connected with finished pot, the surge tank
Side is provided with condenser pipe, and the condenser pipe connects with refluxing opening, and the tower reactor is provided with pressure gauge, the tower
Body is provided with maintenance ladder, and the dense nmp solution outlet is provided with current divider, and waste liquid tank connects with No.1 solution feed pump
Connect, No.1 solution feed pump is connected with dilute nmp solution high position storage tank.
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Application publication date: 20171128 |