CN220677284U - NMP gas cooling recovery device - Google Patents
NMP gas cooling recovery device Download PDFInfo
- Publication number
- CN220677284U CN220677284U CN202322181396.1U CN202322181396U CN220677284U CN 220677284 U CN220677284 U CN 220677284U CN 202322181396 U CN202322181396 U CN 202322181396U CN 220677284 U CN220677284 U CN 220677284U
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- Prior art keywords
- chamber
- cooling
- recovery
- heat exchanger
- nmp
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- 238000001816 cooling Methods 0.000 title claims abstract description 66
- 238000011084 recovery Methods 0.000 title claims abstract description 53
- 239000007789 gas Substances 0.000 claims abstract description 27
- 239000002918 waste heat Substances 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 22
- 238000000576 coating method Methods 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 239000011248 coating agent Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000005057 refrigeration Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 18
- 239000002699 waste material Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000004887 air purification Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a cooling recovery device for NMP gas, and relates to the technical field of organic gas recovery. The device comprises a box body, a precooling chamber, a front cooling chamber, a rear cooling chamber, a purifying chamber and a discharging chamber are sequentially arranged in the box body, the precooling chamber, the front cooling chamber, the rear cooling chamber, the purifying chamber and the discharging chamber are mutually communicated, and a plate-type air heat exchanger is arranged in the precooling chamber. This NMP gaseous cooling recovery unit, high temperature waste gas passes through plate air heat exchanger and the new trend heat exchange of coating machine, in the precooling hot waste gas, still can reduce the energy consumption that the coating machine produced because of heating return air or new trend, utilize waste heat recovery heat exchanger to let in circulating water and continue to reduce hot waste gas temperature and do first recovery, utilize the cold volume cooling that refrigeration compressor unit produced, make hot waste gas reach the supersaturation state and condense into liquid direct recovery, very little partial gas gets into back stage chemical filter adsorption treatment, the recycle of resource has been realized, energy consumption and manufacturing cost have been reduced.
Description
Technical Field
The utility model relates to the technical field of organic gas recovery, in particular to a cooling recovery device for NMP gas.
Background
N-methyl pyrrolidone (NMP) is colorless transparent oily liquid, has the smell of slightly having amine, low volatility, good thermal stability and chemical stability, can volatilize along with water vapor, has hygroscopicity, is sensitive to light, is easily dissolved in water, ethanol, diethyl ether, acetone, ethyl acetate, chloroform and benzene, can dissolve most organic and inorganic compounds, polar gases, natural and synthetic high molecular compounds, and is widely applied to industries such as lithium batteries, medicines, pesticides, pigments, cleaning agents, insulating materials and the like.
In lithium battery manufacturing, the positive electrode material and NMP are fully stirred to prepare slurry, the slurry is uniformly coated on copper foil by a coating machine, and simultaneously NMP is rapidly evaporated by high temperature (between 90 and 140 ℃), so that the energy consumption of the coating process is very high, NMP has the characteristics of inflammability and toxicity, can not be directly discharged, has higher recovery value, and is used for ensuring use safety, reducing enterprise cost and realizing the application of an NMP recovery system.
In the prior art, water is often adopted to spray and absorb NMP gas, the absorbed solution is lifted by a lifting pump and then sprayed from the top again, the NMP gas is continuously absorbed, however, the circulating spraying can directly exchange and consume heat in NMP waste gas, so that heat waste can be caused, and the consumption and the production cost of energy sources can be improved.
Disclosure of Invention
The utility model provides a cooling recovery device for NMP gas, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a gaseous cooling recovery unit of NMP, includes the box, be equipped with precooling chamber, preceding cold chamber, back cold chamber, clean room and emission room in proper order in the box, and precooling chamber, preceding cold chamber, back cold chamber, clean room and emission room link up each other, install plate air heat exchanger in the precooling chamber, install waste heat recovery heat exchanger in the preceding cold chamber, refrigeration compressor unit is installed to the lower part of back cold chamber, and its upper portion is the cooling storehouse, and in refrigeration compressor unit's cold wind export lets in the cooling storehouse through the pipeline, the recovery pipe is installed at the bottom of the storehouse in cooling storehouse, install chemical filter in the clean room, install centrifugal fan in the emission room.
Further, the PLC controller is installed in the outside of box, refrigeration compressor unit and centrifugal fan respectively with PLC controller electric connection.
Furthermore, an assembly cavity is arranged in the precooling chamber, and the plate-type air heat exchanger is positioned in the assembly cavity.
Furthermore, a fresh air inlet and an exhaust gas inlet are respectively arranged on one side of the pre-cooling chamber, and an air return opening is arranged at the top of the pre-cooling chamber.
Further, a support is arranged in the front cooling chamber, and the waste heat recovery heat exchanger is located on the support.
Furthermore, the heat exchange medium inlet and outlet of the waste heat recovery heat exchanger extend out of the box body, and electromagnetic valves are arranged on the heat exchange medium inlet and outlet.
Compared with the prior art, the utility model provides the NMP gas cooling recovery device, which has the following beneficial effects:
this NMP gaseous cooling recovery unit, high temperature waste gas passes through plate air heat exchanger and the new trend heat exchange of coating machine, in the precooling hot waste gas, still can reduce the energy consumption that the coating machine produced because of heating return air or new trend, utilize waste heat recovery heat exchanger to let in circulating water and continue to reduce hot waste gas temperature and do first recovery, utilize the cold volume cooling that refrigeration compressor unit produced, make hot waste gas reach the supersaturation state and condense into liquid direct recovery, very little partial gas gets into back stage chemical filter adsorption treatment, the recycle of resource has been realized, energy consumption and manufacturing cost have been reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a pre-cooling chamber portion according to the present utility model;
FIG. 3 is a schematic view of the front and rear cold chambers of the present utility model.
In the figure: 1. a case; 2. a pre-cooling chamber; 3. a front cooling chamber; 4. a post-cooling chamber; 5. a clean room; 6. a discharge chamber; 7. a plate air heat exchanger; 8. a waste heat recovery heat exchanger; 9. a refrigeration compressor unit; 10. cooling bin; 11. a recovery pipe; 12. a chemical filter; 13. a centrifugal fan; 14. a PLC controller; 15. an assembly chamber; 16. a fresh air inlet; 17. an exhaust gas inlet; 18. an air return port; 19. a bracket; 20. a solenoid valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the utility model discloses a cooling recovery device for NMP gas, comprising a box body 1, wherein a pre-cooling chamber 2, a front cooling chamber 3, a rear cooling chamber 4, a purifying chamber 5 and a discharging chamber 6 are sequentially arranged in the box body 1, the pre-cooling chamber 2, the front cooling chamber 3, the rear cooling chamber 4, the purifying chamber 5 and the discharging chamber 6 are mutually communicated, a plate-type air heat exchanger 7 is arranged in the pre-cooling chamber 2, a waste heat recovery heat exchanger 8 is arranged in the front cooling chamber 3, a refrigerating compressor unit 9 is arranged at the lower part of the rear cooling chamber 4, a cooling bin 10 is arranged at the upper part of the refrigerating compressor unit, a cold air outlet of the refrigerating compressor unit 9 is communicated into the cooling bin 10 through a pipeline, a recovery pipe 11 is arranged at the bottom of the cooling bin 10, install chemical filter 12 in the clean room 5, install centrifugal fan 13 in the discharge chamber 6, high temperature waste gas passes through plate air heat exchanger 7 and the new trend heat exchange of coating machine, when precooling hot waste gas, still can reduce the energy consumption that the coating machine produced because of heating return air or new trend, utilize waste heat recovery heat exchanger 8 to let in circulating water and continue to reduce hot waste gas temperature and do first recovery, utilize the cold volume cooling that refrigeration compressor unit 9 produced, make hot waste gas reach the oversaturation state and condense into liquid direct recovery, very little partial gas gets into the absorption of later stage chemical filter 12 and handles, the recycle of resource has been realized, and energy consumption and manufacturing cost are reduced.
Specifically, the outer side of the box body 1 is provided with a PLC controller 14, and the refrigeration compressor unit 9 and the centrifugal fan 13 are respectively and electrically connected with the PLC controller 14.
In this embodiment, the PLC controller 14 is a digital electronic device with a microprocessor, and is a digital logic controller for automation control, and can load control instructions into a memory at any time for storage and execution, and the system program of the programmable logic controller is generally initialized before leaving the factory, so that a user can edit the corresponding user program according to his own needs to meet different requirements of automation production.
Specifically, an assembling cavity 15 is arranged in the pre-cooling chamber 2, and the plate-type air heat exchanger 7 is positioned in the assembling cavity 15.
In this embodiment, the assembly cavity 15 is a mounting structure for mounting and fixing the plate-type air heat exchanger 7, and the plate-type air heat exchanger 7 is a novel energy-saving and environment-friendly device, which is formed by combining a large number of punched stainless steel thin plates, the plates are sealed by full welding, and waste gas and air cross flow between the plates to perform heat exchange.
Specifically, a fresh air inlet 16 and an exhaust air inlet 17 are respectively arranged on one side of the pre-cooling chamber 2, and an air return opening 18 is arranged at the top of the pre-cooling chamber 2.
In this embodiment, the fresh air of the coater is introduced through the fresh air inlet 16, and is reintroduced into the coater through the return air inlet 18 after heat exchange with the hot waste air, so as to reduce the energy consumption of the coater due to heating the return air or the fresh air, and the NMP high-temperature waste air generated by the coater is introduced through the waste air inlet 17 and then subjected to cooling recovery treatment.
Specifically, a bracket 19 is arranged in the front cooling chamber 3, and the waste heat recovery heat exchanger 8 is positioned on the bracket 19.
In this embodiment, the support 19 is a supporting structure for mounting and fixing the heat recovery heat exchanger 8, and the heat recovery heat exchanger 8 adopts a fin type heat exchanger, which is a heat exchange device most widely used in gas and liquid heat exchangers, and achieves the purpose of enhancing heat transfer by adding fins on a common base pipe.
Specifically, the heat exchange medium inlet and outlet of the heat recovery heat exchanger 8 extends out of the box 1, and electromagnetic valves 20 are installed on the heat exchange medium inlet and outlet.
In this embodiment, the heat exchange medium inlet and outlet may be set as factory water, domestic water, etc., and circulating water is introduced into the heat recovery heat exchanger 8, thereby reducing the temperature of the hot exhaust gas.
When the novel air purification device is used, high-temperature waste gas is subjected to fresh air heat exchange with a coating machine through the plate-type air heat exchanger 7, the energy consumption of the coating machine caused by heating return air or fresh air can be reduced while the hot waste gas is precooled, circulating water is introduced into the waste heat recovery heat exchanger 8 to continuously reduce the temperature of the hot waste gas and realize primary recovery, the cold energy generated by the refrigeration compressor unit 9 is used for reducing the temperature, so that the hot waste gas is condensed into liquid state and directly recovered, and a very small part of gas enters the rear-stage chemical filter 12 (which is an innovative, efficient and energy-saving chemical filter product and is mainly used for treating novel air purification equipment for treating malodor, toxic and harmful and corrosive gas in air), so that the recycling of resources is realized, and the energy consumption and the production cost are reduced.
In summary, this NMP gaseous cooling recovery unit, high temperature waste gas passes through plate air heat exchanger 7 and the new trend heat exchange of coating machine, when precooling hot waste gas, still can reduce the energy consumption that the coating machine produced because of heating return air or new trend, utilize waste heat recovery heat exchanger 8 to let in circulating water and continue to reduce hot waste gas temperature and do first recovery, utilize the cold volume cooling that refrigeration compressor unit 9 produced, make hot waste gas reach the supersaturation state and condense into liquid direct recovery, very little partial gas gets into the back chemical filter 12 adsorption treatment, the recycle of resource has been realized, and energy consumption and manufacturing cost are reduced.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a gaseous cooling recovery unit of NMP, includes box (1), its characterized in that: the utility model discloses a refrigerating system, including box (1), cooling storehouse (10) are installed in the lower part of cooling storehouse (4), purifying chamber (5) and discharging chamber (6) are equipped with precooling chamber (2), preceding cooling chamber (3), back cooling chamber (4), purifying chamber (5) and discharging chamber (6) in proper order in box (1), install plate air heat exchanger (7) in precooling chamber (2), install waste heat recovery heat exchanger (8) in preceding cooling chamber (3), refrigerating compressor unit (9) are installed to the lower part of back cooling chamber (4), and its upper portion is cooling storehouse (10), and in cooling storehouse (10) are passed through to the cold wind export of refrigerating compressor unit (9) through the pipeline, recovery pipe (11) are installed at the bottom of cooling storehouse (10), install chemical filter (12) in purifying chamber (5), install centrifugal fan (13) in discharging chamber (6).
2. The NMP gas cooling recovery unit of claim 1, wherein: the outside of box (1) is installed PLC controller (14), refrigerating compressor unit (9) and centrifugal fan (13) are connected with PLC controller (14) electricity respectively.
3. The NMP gas cooling recovery unit of claim 1, wherein: an assembling cavity (15) is arranged in the pre-cooling chamber (2), and the plate-type air heat exchanger (7) is positioned in the assembling cavity (15).
4. The NMP gas cooling recovery unit of claim 1, wherein: one side of the pre-cooling chamber (2) is respectively provided with a fresh air inlet (16) and an exhaust gas inlet (17), and the top of the pre-cooling chamber (2) is provided with an air return opening (18).
5. The NMP gas cooling recovery unit of claim 1, wherein: a bracket (19) is arranged in the front cooling chamber (3), and the waste heat recovery heat exchanger (8) is positioned on the bracket (19).
6. The NMP gas cooling recovery unit of claim 1, wherein: the heat exchange medium inlet and outlet of the waste heat recovery heat exchanger (8) extends out of the box body (1), and electromagnetic valves (20) are arranged on the heat exchange medium inlet and outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322181396.1U CN220677284U (en) | 2023-08-14 | 2023-08-14 | NMP gas cooling recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322181396.1U CN220677284U (en) | 2023-08-14 | 2023-08-14 | NMP gas cooling recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220677284U true CN220677284U (en) | 2024-03-29 |
Family
ID=90375518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322181396.1U Active CN220677284U (en) | 2023-08-14 | 2023-08-14 | NMP gas cooling recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220677284U (en) |
-
2023
- 2023-08-14 CN CN202322181396.1U patent/CN220677284U/en active Active
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