CN211328818U - NMP waste gas recovery equipment is used in lithium ion battery production - Google Patents
NMP waste gas recovery equipment is used in lithium ion battery production Download PDFInfo
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- CN211328818U CN211328818U CN201921954525.3U CN201921954525U CN211328818U CN 211328818 U CN211328818 U CN 211328818U CN 201921954525 U CN201921954525 U CN 201921954525U CN 211328818 U CN211328818 U CN 211328818U
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Abstract
The utility model discloses a NMP waste gas recovery equipment is used in lithium ion battery production relates to lithium cell production technical field, can't carry out the problem of comprehensive recovery to the waste heat of NMP waste gas for solving current waste gas recovery equipment. The waste gas recycling system is characterized in that a gas-gas heat exchanger is mounted on one side of the rotary wheel type heat exchanger, a front condenser is mounted on one side of the gas-gas heat exchanger, a middle condenser is mounted on one side of the front condenser, a rear condenser is mounted on one side of the middle condenser, a circulating fan is mounted on one side of the rear condenser, a spray tower is mounted on one side of the circulating fan, a first waste gas pipeline is mounted between the rotary wheel type heat exchanger and the gas-gas heat exchanger, a second waste gas pipeline is mounted between the gas-gas heat exchanger and the front condenser, a third waste gas pipeline is mounted between the front condenser and the middle condenser, and a fourth waste gas pipeline is mounted between the.
Description
Technical Field
The utility model relates to a lithium cell production technical field specifically is a NMP waste gas recovery equipment is used in lithium ion battery production.
Background
A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. Along with the development of science and technology, lithium batteries have become mainstream now, and the NMP waste gas that evaporates in a large number in the lithium ion battery production process contains multiple chemical composition unfavorable to human body and natural environment, and NMP recovery plant then can effectively carry out recovery cyclic utilization with these waste gases, has not only reduced lithium battery production energy consumption, and through the multiple absorption of recovery plant, can effectively discharge harmful waste gas control within national environmental protection standard again.
However, the existing waste gas recovery equipment cannot comprehensively recover the waste heat of the NMP waste gas; therefore, the existing requirements are not met, and an NMP waste gas recovery device for lithium ion battery production is provided for the requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a NMP waste gas recovery equipment is used in lithium ion battery production to current waste gas recovery equipment who proposes in solving above-mentioned background art can't carry out the problem of retrieving comprehensively to the waste heat of NMP waste gas.
In order to achieve the above object, the utility model provides a following technical scheme: the NMP waste gas recovery equipment for the production of the lithium ion battery comprises a rotary wheel type heat exchanger, wherein a gas-gas heat exchanger is installed on one side of the rotary wheel type heat exchanger, a front condenser is installed on one side of the gas-gas heat exchanger, a middle condenser is installed on one side of the front condenser, a rear condenser is installed on one side of the middle condenser, a circulating fan is installed on one side of the rear condenser, and a spray tower is installed on one side of the circulating fan.
Preferably, a first waste gas pipeline is installed between the rotary heat exchanger and the gas-gas heat exchanger, a second waste gas pipeline is installed between the gas-gas heat exchanger and the front condenser, a third waste gas pipeline is installed between the front condenser and the inter-condenser, a fourth waste gas pipeline is installed between the inter-condenser and the rear condenser, a fifth waste gas pipeline is installed between the rear condenser and the circulating fan, and a sixth waste gas pipeline is installed between the circulating fan and the spray tower.
Preferably, the first exhaust gas pipeline is connected with the rotary wheel type heat exchanger and the gas-gas heat exchanger through flanges, the second exhaust gas pipeline is connected with the gas-gas heat exchanger and the front condenser through flanges, the third exhaust gas pipeline is connected with the front condenser and the middle condenser through flanges, the fourth exhaust gas pipeline is connected with the middle condenser and the rear condenser through flanges, the fifth exhaust gas pipeline is connected with the rear condenser and the circulating fan through flanges, and the sixth exhaust gas pipeline is connected with the circulating fan and the spray tower through flanges.
Preferably, a fresh air inlet is formed in the upper portion of one side of the rotary wheel type heat exchanger, a fresh air outlet is formed in the upper portion of the other side of the rotary wheel type heat exchanger, a fresh air pipeline is installed at one end of the fresh air outlet, a first waste gas outlet is formed in the lower portion of one side of the rotary wheel type heat exchanger, a first waste gas inlet is formed in the lower portion of the other side of the rotary wheel type heat exchanger, a main waste gas pipeline is installed at one end of the first waste gas inlet, the fresh air outlet is connected with the fresh air pipeline through a flange, and the first waste gas inlet is connected with the main waste gas.
Preferably, water outlets are formed in the upper portions of one sides of the front condenser, the middle condenser and the rear condenser, water inlets are formed in the lower portions of one sides of the front condenser, the middle condenser and the rear condenser, cooling water pipelines are installed between the water inlets and the water outlets, second waste gas inlets are formed in the lower portions of the other sides of the front condenser, the middle condenser and the rear condenser, second waste gas outlets are formed in the upper ends of the front condenser, the middle condenser and the rear condenser, high-concentration NMP liquid discharge pipes are installed at the lower ends of the front condenser, the middle condenser and the rear condenser, and electromagnetic valves are installed outside the high-concentration NMP liquid discharge pipes.
Preferably, a circulating water tank is arranged below the spray tower, a third waste gas inlet is formed in one side of the circulating water tank, a circulating water pump is installed at the upper end of the circulating water tank, a main spray pipe is installed at one end of the circulating water pump, a second sub spray pipe is installed above one side of the main spray pipe, a second packing layer is arranged below the second sub spray pipe, a first sub spray pipe is installed below one side of the main spray pipe, and a first packing layer is arranged below the first sub spray pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a runner type heat exchanger carries out the heat transfer, improves the new trend temperature and discharges through the new trend pipeline, realizes waste heat recovery for the first time, reduces the exhaust gas temperature to about eighty five degrees centigrade by one hundred twenty degrees centigrade, carries out waste heat recovery for the second time through gas-gas heat exchanger, makes the exhaust gas temperature reduce to about fifty degrees centigrade, then carries out the tertiary condensation heat transfer through preceding condenser, inter-condenser and postcondenser, reduces the exhaust gas temperature to about twenty five degrees centigrade of appointed temperature, thereby the waste heat to the NMP waste gas is comprehensively recovered, and the subsequent processing of being convenient for;
2. the utility model discloses a spray column carries out the secondary to waste gas and sprays, sprays remaining NMP in the in-process absorption waste gas, and NMP in the waste gas is dissolved in the aquatic and is retrieved, and the tail gas that accords with emission standard is discharged through discharge tube to reach standard, and first packing layer and second packing layer can effectively improve the NMP rate of recovery, reduce the NMP content of discharging waste gas in the middle of the atmosphere, reduce the pollution degree to the environment.
Drawings
Fig. 1 is an overall front view of the NMP waste gas recovery apparatus for lithium ion battery production of the present invention;
fig. 2 is a schematic structural view of a front condenser of the present invention;
fig. 3 is a schematic structural diagram of the spray tower of the present invention.
In the figure: 1. a heat wheel exchanger; 2. a fresh air inlet; 3. a fresh air outlet; 4. a fresh air duct; 5. a first exhaust gas inlet; 6. a main exhaust gas conduit; 7. a first exhaust gas outlet; 8. a gas-gas heat exchanger; 9. a front condenser; 10. a condenser; 11. a post-condenser; 12. a circulating fan; 13. a spray tower; 14. a first exhaust gas conduit; 15. a second exhaust gas conduit; 16. a third exhaust gas conduit; 17. a fourth exhaust gas conduit; 18. a fifth exhaust gas conduit; 19. a sixth exhaust gas conduit; 20. a water inlet; 21. a water outlet; 22. a cooling water pipeline; 23. a second exhaust gas inlet; 24. a second exhaust gas outlet; 25. a high concentration NMP liquid drain; 26. an electromagnetic valve; 27. a circulating water tank; 28. a third waste gas inlet; 29. A first filler layer; 30. a first branch spray pipe; 31. a second packing layer; 32. a second sub-spray pipe; 33. a pipeline which is discharged after reaching the standard; 34. a water circulating pump; 35. a main shower pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a lithium ion battery production is with NMP waste gas recovery equipment, including runner heat exchanger 1, gas-gas heat exchanger 8 is installed to one side of runner heat exchanger 1, preceding condenser 9 is installed to one side of gas-gas heat exchanger 8, condenser 10 is installed to one side of preceding condenser 9, postcondenser 11 is installed to one side of condenser 10, circulating fan 12 is installed to one side of postcondenser 11, spray column 13 is installed to one side of circulating fan 12, carry out comprehensive recovery to the waste heat of NMP waste gas, and NMP recovery efficiency is high, bring higher economic benefits for the producer.
Further, a first waste gas pipeline 14 is installed between the rotary wheel type heat exchanger 1 and the gas-gas heat exchanger 8, a second waste gas pipeline 15 is installed between the gas-gas heat exchanger 8 and the front condenser 9, a third waste gas pipeline 16 is installed between the front condenser 9 and the middle condenser 10, a fourth waste gas pipeline 17 is installed between the middle condenser 10 and the rear condenser 11, a fifth waste gas pipeline 18 is installed between the rear condenser 11 and the circulating fan 12, and a sixth waste gas pipeline 19 is installed between the circulating fan 12 and the spray tower 13, so that continuous work among all parts can be realized through all the pipelines, and waste gas is treated.
Further, the first waste gas pipeline 14 is connected with the rotary wheel type heat exchanger 1 and the gas-gas heat exchanger 8 through flanges, the second waste gas pipeline 15 is connected with the gas-gas heat exchanger 8 and the front condenser 9 through flanges, the third waste gas pipeline 16 is connected with the front condenser 9 and the middle condenser 10 through flanges, the fourth waste gas pipeline 17 is connected with the middle condenser 10 and the rear condenser 11 through flanges, the fifth waste gas pipeline 18 is connected with the rear condenser 11 and the circulating fan 12 through flanges, and the sixth waste gas pipeline 19 is connected with the circulating fan 12 and the spray tower 13 through flanges.
Further, a fresh air inlet 2 is arranged above one side of the heat wheel type heat exchanger 1, a fresh air outlet 3 is arranged above the other side of the heat wheel type heat exchanger 1, a fresh air pipeline 4 is installed at one end of the fresh air outlet 3, a first waste gas outlet 7 is arranged below one side of the heat wheel type heat exchanger 1, a first waste gas inlet 5 is arranged below the other side of the heat wheel type heat exchanger 1, a main waste gas pipeline 6 is installed at one end of the first waste gas inlet 5, the fresh air outlet 3 is connected with the fresh air pipeline 4 through a flange, the first waste gas inlet 5 is connected with the main waste gas pipeline 6 through a flange, waste gas enters the inside of the heat wheel type heat exchanger 1 to exchange heat, the fresh air temperature is increased and is discharged through the fresh air pipeline 4, first waste heat recovery is realized, and the waste gas temperature is reduced to about eighty-.
Further, water outlets 21 are respectively arranged above one sides of the front condenser 9, the middle condenser 10 and the rear condenser 11, water inlets 20 are respectively arranged below one sides of the front condenser 9, the middle condenser 10 and the rear condenser 11, a cooling water pipeline 22 is arranged between the water inlets 20 and the water outlets 21, second waste gas inlets 23 are respectively arranged below the other sides of the front condenser 9, the middle condenser 10 and the rear condenser 11, second waste gas outlets 24 are respectively arranged at the upper ends of the front condenser 9, the middle condenser 10 and the rear condenser 11, high-concentration NMP liquid drain pipes 25 are respectively arranged at the lower ends of the front condenser 9, the middle condenser 10 and the rear condenser 11, electromagnetic valves 26 are respectively arranged outside the high-concentration NMP liquid drain pipes 25, the electromagnetic valves 26 are opened, the high concentration NMP liquid inside the pre-condenser 9, the inter-condenser 10 and the post-condenser 11 can be collected through a high concentration NMP liquid drain pipe 25.
Further, a circulating water tank 27 is arranged below the spray tower 13, a third waste gas inlet 28 is arranged on one side of the circulating water tank 27, a circulating water pump 34 is installed at the upper end of the circulating water tank 27, a main spray pipe 35 is installed at one end of the circulating water pump 34, a second sub spray pipe 32 is installed above one side of the main spray pipe 35, a second packing layer 31 is arranged below the second sub spray pipe 32, a first sub spray pipe 30 is installed below one side of the main spray pipe 35, a first packing layer 29 is arranged below the first sub spray pipe 30, the NMP recovery rate can be effectively improved through the first packing layer 29 and the second packing layer 31, the NMP content of waste gas discharged into the atmosphere is reduced, and therefore the pollution degree to the environment is reduced.
The working principle is as follows: when the waste heat recovery device is used, the first waste gas inlet 5 is connected with a main waste gas pipeline 6 at the outlet of a hot waste gas exhaust fan of a coating machine, waste gas firstly enters the inside of the rotary heat exchanger 1 to exchange heat, the temperature of fresh air is improved and is exhausted through a fresh air pipeline 4 to realize the first waste heat recovery, the temperature of the waste gas is reduced to about eighty-five ℃ from one hundred twenty ℃, the waste gas enters the inside of the gas-gas heat exchanger 8 through a first waste gas pipeline 14, the waste gas is subjected to the second waste heat recovery through the gas-gas heat exchanger 8 to reduce the temperature of the waste gas to about fifty ℃, then the waste gas enters the inside of the front condenser 9 through a second waste gas pipeline 15 to perform the first condensation heat exchange to reduce the temperature of the waste gas, then enters the inside of the condenser 10 through a third waste gas pipeline 16 to perform the second condensation heat exchange to reduce the temperature of the waste gas, and then enters the inside of the rear, finally, the temperature of the waste gas is reduced to about twenty-five degrees centigrade, so that the waste heat of the NMP waste gas is comprehensively recovered and the subsequent treatment is convenient, the high-concentration NMP liquid in the front condenser 9, the middle condenser 10 and the rear condenser 11 can be collected through a high-concentration NMP liquid discharge pipe 25, the waste gas after the waste heat recovery enters the spraying tower 13 through a sixth waste gas pipeline 19 under the drive of a circulating fan 12, a circulating water pump 34 works to introduce the circulating water in a circulating water tank 27 into the main spraying pipe 35 and then respectively introduce the circulating water into the first sub spraying pipe 30 and the second sub spraying pipe 32 through the main spraying pipe 35 for spraying, the waste gas enters from a third waste gas inlet 28 at the bottom of the spraying tower 13 and passes through a first packing layer 29 and a second packing layer 31 to absorb the residual NMP in the waste gas in the spraying process, and the NMP water in the waste gas is recovered, the tail gas that accords with emission standard discharges through discharge line 33 up to standard, and first packing layer 29 and second packing layer 31 can effectively improve the NMP rate of recovery, reduce the NMP content of the waste gas in the middle of discharging to the atmosphere to reduce the pollution degree to the environment.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a lithium ion battery production is with NMP waste gas recovery equipment, includes runner formula heat exchanger (1), its characterized in that: the air-gas heat exchanger (8) is installed on one side of the rotary wheel type heat exchanger (1), the front condenser (9) is installed on one side of the air-gas heat exchanger (8), the middle condenser (10) is installed on one side of the front condenser (9), the rear condenser (11) is installed on one side of the middle condenser (10), the circulating fan (12) is installed on one side of the rear condenser (11), and the spray tower (13) is installed on one side of the circulating fan (12).
2. The NMP waste gas recovery equipment for lithium ion battery production according to claim 1, characterized in that: a first waste gas pipeline (14) is installed between the rotary wheel type heat exchanger (1) and the gas-gas heat exchanger (8), a second waste gas pipeline (15) is installed between the gas-gas heat exchanger (8) and the front condenser (9), a third waste gas pipeline (16) is installed between the front condenser (9) and the middle condenser (10), a fourth waste gas pipeline (17) is installed between the middle condenser (10) and the rear condenser (11), a fifth waste gas pipeline (18) is installed between the rear condenser (11) and the circulating fan (12), and a sixth waste gas pipeline (19) is installed between the circulating fan (12) and the spray tower (13).
3. The NMP waste gas recovery equipment for lithium ion battery production according to claim 2, characterized in that: the first waste gas pipeline (14) is connected with the rotary wheel type heat exchanger (1) and the gas-gas heat exchanger (8) through flanges, the second waste gas pipeline (15) is connected with the gas-gas heat exchanger (8) and the front condenser (9) through flanges, the third waste gas pipeline (16) is connected with the front condenser (9) and the middle condenser (10) through flanges, the fourth waste gas pipeline (17) is connected with the middle condenser (10) and the rear condenser (11) through flanges, the fifth waste gas pipeline (18) is connected with the rear condenser (11) and the circulating fan (12) through flanges, and the sixth waste gas pipeline (19) is connected with the circulating fan (12) and the spray tower (13) through flanges.
4. The NMP waste gas recovery equipment for lithium ion battery production according to claim 1, characterized in that: the novel exhaust gas purification device is characterized in that a fresh air inlet (2) is arranged above one side of the heat wheel type heat exchanger (1), a fresh air outlet (3) is arranged above the other side of the heat wheel type heat exchanger (1), a fresh air pipeline (4) is installed at one end of the fresh air outlet (3), a first exhaust gas outlet (7) is arranged below one side of the heat wheel type heat exchanger (1), a first exhaust gas inlet (5) is arranged below the other side of the heat wheel type heat exchanger (1), a main exhaust gas pipeline (6) is installed at one end of the first exhaust gas inlet (5), the fresh air outlet (3) is connected with the fresh air pipeline (4) through a flange, and the first exhaust gas inlet (5) is connected with the main exhaust gas pipeline (6) through a flange.
5. The NMP waste gas recovery equipment for lithium ion battery production according to claim 1, characterized in that: water outlets (21) are arranged above one sides of the front condenser (9), the middle condenser (10) and the rear condenser (11), water inlets (20) are arranged below one side of the front condenser (9), one side of the middle condenser (10) and one side of the rear condenser (11), a cooling water pipeline (22) is arranged between the water inlet (20) and the water outlet (21), a second waste gas inlet (23) is arranged below the other side of the front condenser (9), the middle condenser (10) and the rear condenser (11), the upper ends of the front condenser (9), the middle condenser (10) and the rear condenser (11) are respectively provided with a second waste gas outlet (24), the lower ends of the front condenser (9), the middle condenser (10) and the rear condenser (11) are all provided with a high-concentration NMP liquid drain pipe (25), and an electromagnetic valve (26) is arranged outside the high-concentration NMP liquid discharge pipe (25).
6. The NMP waste gas recovery equipment for lithium ion battery production according to claim 1, characterized in that: the utility model discloses a spray column, including spray tower (13), circulating water tank (27) is provided with in the below of spray tower (13), one side of circulating water tank (27) is provided with third waste gas import (28), circulating water pump (34) are installed to the upper end of circulating water tank (27), main shower (35) are installed to the one end of circulating water pump (34), the second is installed to the top of main shower (35) one side and is divided shower (32), the below that the second divides shower (32) is provided with second packing layer (31), first branch shower (30) are installed to the below of main shower (35) one side, the below of first branch shower (30) is provided with first packing layer (29).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921954525.3U CN211328818U (en) | 2019-11-13 | 2019-11-13 | NMP waste gas recovery equipment is used in lithium ion battery production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921954525.3U CN211328818U (en) | 2019-11-13 | 2019-11-13 | NMP waste gas recovery equipment is used in lithium ion battery production |
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| CN211328818U true CN211328818U (en) | 2020-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117449A (en) * | 2021-05-25 | 2021-07-16 | 杭州广泰环保技术有限公司 | System for recovering NMP by cooling and condensing and recovery process thereof |
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2019
- 2019-11-13 CN CN201921954525.3U patent/CN211328818U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117449A (en) * | 2021-05-25 | 2021-07-16 | 杭州广泰环保技术有限公司 | System for recovering NMP by cooling and condensing and recovery process thereof |
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