CN207871852U - A kind of heat recovery and nmp solvent retracting device of the exhaust of lithium battery coating machine - Google Patents
A kind of heat recovery and nmp solvent retracting device of the exhaust of lithium battery coating machine Download PDFInfo
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- CN207871852U CN207871852U CN201721839813.5U CN201721839813U CN207871852U CN 207871852 U CN207871852 U CN 207871852U CN 201721839813 U CN201721839813 U CN 201721839813U CN 207871852 U CN207871852 U CN 207871852U
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- pipeline
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- cooler
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Abstract
The utility model discloses the heat recoveries and nmp solvent retracting device of a kind of exhaust of lithium battery coating machine, including gas heat exchanger, air blower and main absorption tower, the gas heat exchanger is connected to air blower by pipeline, the air blower is communicated in main absorb the bottom of the tower by pipeline, coating machine exhaust inlet pipe and backwind tube are communicated on the gas heat exchanger, the first packing layer and the second packing layer are respectively included in the main absorption tower, first packing layer bottom is communicated with the second cooler by pipeline, and the first lime set pump, meet the requirement of environmental protection are installed on pipeline；More general condensing recovery technique, coating machine return air NMP contents are low, are more advantageous to coating machine work；When using triethylene glycol TEG as absorbent, the return air water content of coating machine is almost nil, and more general water absorption method operates more preferable coating machine product quality higher；Device can also be absorbed using water absorption using TEG, and be easy to handover operation.
Description
Technical field
The utility model is related to technical field of lithium batteries, the heat recovery of specially a kind of lithium battery coating machine exhaust and
Nmp solvent retracting device.
Background technology
N-Methyl pyrrolidone is referred to as NMP, because its chemical stability is good in lithium ion battery production, flash-point it is high and
Excellent dilution properties are widely used.It is the main component in lithium ion battery production in positive coating machine discharge exhaust gas, but
If not recycled to it, nmp solvent can be caused largely to consume, will also result in volatile organic matter pollution, have to this country
Specific environmental regulations.Meanwhile the exhaust gas of coating machine discharge has higher temperature (about 120 DEG C), if direct emission is also to energy
Source is a huge waste, thus to the recycling of NMP and exhaust gas heat be in lithium ion battery production process no matter environmental protection
An or all significant link of energy-saving and emission-reduction.
Existing NMP recovery technologies are broadly divided into：Condensing recovery method and water absorption method.Condensing recovery method is not easy using NMP
Volatilization, the NMP in reducing temperature heel row and deflating are condensed into liquid, then the discharge gas direct emission or cycle of low concentration
Return coating machine.Water absorption method mainly uses water absorption tower, is absorbed using NMP this characteristic miscible with water, low after absorption
The air direct emission of NMP concentration is recycled back to coating machine.It is above-mentioned that there is also some defects and deficiency, condensations in the prior art
Absorption method exists：1. condensation not exclusively causes discharge not up to standard, 2. higher, the shadows that are recycled back to NMP contents in the gas of coating machine
Ring the working effect of coating machine.
Conventional water absorption tower skill is usually using devices such as the absorption towers of three sections of cyclic absorptions, and there are major defects：1. directly
When discharge, a large amount of vapor are expelled directly out with discharge gas, larger to the consumption of water resource, and circulating reflux liquid has not
With the back-mixing of degree, the VOC in discharge gas is more difficult to control.2. if gas circulation uses, the vapor of return air is saturation state,
The higher influence coating machine production effect of water vapour content.3. the features such as internal circulating load on absorption tower is big and tower body is high causes equipment to throw
Money is big, also more to power consumption.
Utility model content
The purpose of this utility model is to provide a kind of heat recoveries of lithium battery coating machine exhaust and nmp solvent recycling dress
It sets, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions：A kind of heat of lithium battery coating machine exhaust
Recycling and nmp solvent retracting device, including gas heat exchanger, air blower, main absorption tower and tail gas purification tower, the gas converting heat
Device is connected to air blower by pipeline, and the air blower is communicated in main absorb the bottom of the tower by pipeline, on the gas heat exchanger
It is communicated with coating machine exhaust inlet pipe and backwind tube, the first packing layer and the second packing layer, institute are respectively included in the main absorption tower
It states the first packing layer bottom and the second cooler is communicated with by pipeline, and the second lime set pump, the main absorption are installed on pipeline
Tower bottom is connected to the first cooler also by pipeline, and the first lime set pump is equipped on pipeline, logical at the top of first cooler
Piping is communicated in the second packing layer, and second cooler is communicated with TEG liquid inlet pipes, second cooler by pipeline
Pipeline and TEG liquid inlet pipe be communicated in the first packing layer, the main absorption tower side is also equipped with tail gas purification tower, described
Tail gas purification tower top side is connected with demineralized water inlet pipe, and the tail gas clean-up tower bottom is communicated with NMP waste liquid outlet pipes, the master
Tail gas purification tower is communicated in by pipeline at the top of absorption tower, the tail gas purification tower bottom side is communicated in first by pipeline and fills out
The bed of material.
Preferably, the gas heat exchanger is board-like gas-gas heat exchanger.
Preferably, first cooler and the second cooler specification are identical, the first lime set pump and the second lime set pump
Specification is also identical.
The utility model compared with prior art, the utility model has the beneficial effects that：
1, discharge gas is handled by special equipment, meet the requirement of environmental protection；
2, more general condensing recovery technique, coating machine return air NMP contents are low, are more advantageous to coating machine work；
When 3, using triethylene glycol TEG as absorbent, the return air water content of coating machine is almost nil, more general water absorption method
Operate more preferable coating machine product quality higher；
4, device can also be absorbed using water absorption using TEG, and be easy to handover operation；
5, have that equipment is few compared with three sections of circulating absorption plants, absorb that tower height degree is low, and the small advantage of total filler height makes whole throwing
Money is reduced.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
In figure：1 gas heat exchanger, 2 air blowers, 3 main absorption towers, 31 first packing layers, 32 second packing layers, 4 tail gas are net
Change tower, 5 first coolers, 6 second coolers, 7 first lime sets pump, 8 second lime sets pump, 9 coating machines exhaust inlet pipe, 10 return air
Pipe, 11TEG liquid inlet pipe, 12 demineralized water inlet pipes, 13NMP waste liquid outlet pipes.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model provides a kind of technical solution：A kind of heat recovery of lithium battery coating machine exhaust and
Nmp solvent retracting device, including gas heat exchanger 1, air blower 2, main absorption tower 3 and tail gas purification tower 4, the gas heat exchanger
1 is connected to air blower 2 by pipeline, and the air blower 2 is communicated in 3 bottom of main absorption tower, the gas heat exchanger 1 by pipeline
On be communicated with coating machine exhaust inlet pipe 9 and backwind tube 10, respectively including the first packing layer 31 and second in the main absorption tower 3 fills out
The bed of material 32,31 bottom of the first packing layer are communicated with the second cooler 6 by pipeline, and the second lime set pump is equipped on pipeline
8,3 bottom of main absorption tower is connected to the first cooler 5 also by pipeline, and the first lime set pump 7 is equipped on pipeline, and described the
One cooler, 5 top is communicated in the second packing layer 32 by pipeline, and second cooler 6 is communicated with TEG liquid by pipeline
Inlet pipe 11, the pipeline and TEG liquid inlet pipe 11 of second cooler 6 are communicated in the first packing layer 31, the main absorption tower 3
Side is also equipped with tail gas purification tower 4, and 4 top side of the tail gas purification tower is connected with demineralized water inlet pipe 12, and the tail gas is net
Change 4 bottom of tower and be communicated with NMP waste liquids outlet pipe 13,3 top of the main absorption tower is communicated in tail gas purification tower 4 by pipeline, described
4 bottom side of tail gas purification tower is communicated in the first packing layer 31 by pipeline.
Specifically, the gas heat exchanger 1 is board-like gas-gas heat exchanger.
Specifically, first cooler 5 is identical with 6 specification of the second cooler, the first lime set pump 7 and the second lime set
It is also identical to pump 8 specifications.
Operation principle：In use, coating machine discharge gas enter in gas heat exchanger 1 it is cooling, then by 2 liters of air blower
It is pressed into and becomes owner of absorption tower 3, tower reactor produces NMP liquid, and overhead gas is again introduced into gas heat exchanger 1, and heat quilt is recycled in cold side
It is mixed with the fresh air of supplement after preheating and is sent to coating machine, the main absorption tower a small amount of gas of 3 tower top enters 4 bottom of tail gas purification tower
Portion is drenched fresh demineralized water into tail gas purification tower 4 from tower top by demineralized water inlet pipe 12, and overhead gas is directly discharged into air.When
When main absorption tower 3 uses water as absorbent, 4 liquid of tail gas purification tower enters 3 tower top of main absorption tower as absorbent from tower reactor
Supplement；When main absorption tower 3 uses TEG as absorbent, fresh TEG enters main 3 tower top of absorption tower from TEG liquid inlet pipe 11 and makees
It is supplemented for absorbent.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of heat recovery and nmp solvent retracting device of the exhaust of lithium battery coating machine, including gas heat exchanger (1), air blast
Machine (2), main absorption tower (3) and tail gas purification tower (4), it is characterised in that：The gas heat exchanger (1) is connected to drum by pipeline
Wind turbine (2), the air blower (2) are communicated in main absorption tower (3) bottom by pipeline, are communicated on the gas heat exchanger (1)
Coating machine is vented inlet pipe (9) and backwind tube (10), and respectively including the first packing layer (31) and second in the main absorption tower (3) fills out
The bed of material (32), the first packing layer (31) bottom is communicated with the second cooler (6) by pipeline, and second is equipped on pipeline
Lime set pumps (8), and main absorption tower (3) bottom is connected to the first cooler (5) also by pipeline, and it is solidifying that first is equipped on pipeline
Liquid pump (7), the first cooler (5) top are communicated in the second packing layer (32) by pipeline, and second cooler (6) is logical
Piping is communicated with TEG liquid inlet pipe (11), and the pipeline and TEG liquid inlet pipe (11) of second cooler (6) are communicated in
First packing layer (31), main absorption tower (3) side are also equipped with tail gas purification tower (4), tail gas purification tower (4) top
Side is connected with demineralized water inlet pipe (12), and tail gas purification tower (4) bottom is communicated with NMP waste liquids outlet pipe (13), the main suction
It receives and tail gas purification tower (4) is communicated in by pipeline at the top of tower (3), tail gas purification tower (4) bottom side is connected to by pipeline
In the first packing layer (31).
2. the heat recovery and nmp solvent retracting device, feature of lithium battery coating machine exhaust according to claim 1 exist
In：The gas heat exchanger (1) is board-like gas-gas heat exchanger.
3. the heat recovery and nmp solvent retracting device, feature of lithium battery coating machine exhaust according to claim 1 exist
In：First cooler (5) is identical with the second cooler (6) specification, the first lime set pump (7) and the second lime set pump (8)
Specification is also identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721839813.5U CN207871852U (en) | 2017-12-26 | 2017-12-26 | A kind of heat recovery and nmp solvent retracting device of the exhaust of lithium battery coating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721839813.5U CN207871852U (en) | 2017-12-26 | 2017-12-26 | A kind of heat recovery and nmp solvent retracting device of the exhaust of lithium battery coating machine |
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| Publication Number | Publication Date |
|---|---|
| CN207871852U true CN207871852U (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721839813.5U Active CN207871852U (en) | 2017-12-26 | 2017-12-26 | A kind of heat recovery and nmp solvent retracting device of the exhaust of lithium battery coating machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207871852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108452639A (en) * | 2017-12-26 | 2018-08-28 | 陈卓 | The heat recovery and nmp solvent recovery method and device of a kind of lithium battery coating machine exhaust |
-
2017
- 2017-12-26 CN CN201721839813.5U patent/CN207871852U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108452639A (en) * | 2017-12-26 | 2018-08-28 | 陈卓 | The heat recovery and nmp solvent recovery method and device of a kind of lithium battery coating machine exhaust |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200727 Address after: 063000 West outer ring of Nanpu Development Zone, Tangshan City, Hebei Province Patentee after: Tangshan Jinkun Chemical Co.,Ltd. Address before: 710021 Shaanxi Fengcheng Xi'an three road Feng Yuan new residence Patentee before: Chen Zhuo |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A device for heat recovery and NMP solvent recovery of exhaust gas from lithium battery coater Effective date of registration: 20210604 Granted publication date: 20180918 Pledgee: Bank of Cangzhou Limited by Share Ltd. Fengnan branch Pledgor: Tangshan Jinkun Chemical Co.,Ltd. Registration number: Y2021980004269 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230717 Granted publication date: 20180918 Pledgee: Bank of Cangzhou Limited by Share Ltd. Fengnan branch Pledgor: Tangshan Jinkun Chemical Co.,Ltd. Registration number: Y2021980004269 |