CN210885280U - NMP (N-methyl pyrrolidone) fresh liquid storage and transportation system for lithium power plant - Google Patents
NMP (N-methyl pyrrolidone) fresh liquid storage and transportation system for lithium power plant Download PDFInfo
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- CN210885280U CN210885280U CN201921281864.XU CN201921281864U CN210885280U CN 210885280 U CN210885280 U CN 210885280U CN 201921281864 U CN201921281864 U CN 201921281864U CN 210885280 U CN210885280 U CN 210885280U
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Abstract
The utility model provides a new liquid warehousing and transportation system of NMP for lithium power plant, a serial communication port, include: the device comprises an NMP storage tank, a pneumatic diaphragm pump, a homogenizing workshop NMP temporary storage tank and an electric diaphragm pump, wherein a feeding valve and a nitrogen inlet are arranged at the top of the NMP storage tank, a blanking valve is arranged at the bottom of the NMP storage tank, a first liquid level meter is arranged on the side wall of the NMP storage tank, and the feeding valve is connected with an NMP tank truck through the pneumatic diaphragm pump; homogenate workshop NMP jar of keeping in links to each other with the unloading valve through electronic diaphragm pump to in utilizing the new liquid of NMP in electronic diaphragm pump will NMP storage tank to squeeze into homogenate workshop NMP jar of keeping in, be provided with the second level gauge in the homogenate workshop NMP jar of keeping in. The NMP new liquid storage and transportation system can effectively solve the problems of large-scale storage and turnover of NMP for a long time, can solve the problems of large workshop logistics, large labor load of personnel, easy escape of NMP smell and the like in the NMP transportation process, and realizes the long-time centralized storage and automatic transportation of the NMP.
Description
Technical Field
The utility model belongs to NMP warehousing and transportation equipment field particularly, the utility model relates to a new liquid warehousing and transportation system of NMP for lithium power plant.
Background
NMP (N-methyl pyrrolidone) is colorless transparent oily liquid, and has melting point of-24.4 ℃, boiling point of 203 ℃ and flash point of 95 ℃; it has the advantages of high flash point, low corrosivity, high solubility, low viscosity, low volatility, high thermal and chemical stability, etc. Because of its good physical and chemical properties, it is widely used in various industries, and at present, it is the lithium battery industry that uses NMP more widely, and in the production process of lithium ion batteries, NMP (N-methyl pyrrolidone) is often used as a solvent when mixing the positive electrode. Along with new energy automobile market is bigger and bigger to power lithium cell demand scale, lithium cell factory production scale is also bigger and bigger, the lithium cell production scale of general new-built mill is more than 8Gwh in annual output, the NMP solvent annual amount of demand is more than ten thousand tons, along with the country is more and more strict to the environmental protection requirement, the transportation management and control of striding province of a large amount of NMP is also more and more strict, lithium cell manufacturing enterprise is for avoiding meeting abnormal problem and guaranteeing the stable supply of NMP of production usefulness because of transporting NMP in-process, the new liquid of NMP often need be a certain amount of stock, simultaneously most lithium cell manufacturing enterprises use the barreled mode to transport NMP at present, the new liquid of NMP of will newly purchasing is transported the homogenate workshop with the bucket, then carry out the homogenate stirring with homogenate system connection, then transport the bucket, it is big in workshop commodity circulation.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a new liquid warehousing and transportation system of NMP for lithium power plant aims at effectively solving long-time extensive storage NMP, turnover and regularly wash the NMP storage jar, and it is big to solve the workshop commodity circulation in the NMP transportation simultaneously, personnel's work load is big, the easy loss scheduling problem of NMP smell, realizes that NMP concentrates for a long time to store, automatic transport.
According to an aspect of the utility model, the utility model provides a new liquid storage and transportation system of NMP for lithium power plant, according to the utility model discloses an embodiment, this storage and transportation system includes:
the NMP storage tank is characterized in that a feeding valve and a nitrogen gas inlet are arranged at the top of the NMP storage tank, a discharging valve is arranged at the bottom of the NMP storage tank, a first liquid level meter is arranged on the side wall of the NMP storage tank, the feeding valve is connected with an NMP tank car through a pneumatic diaphragm pump, so that NMP fresh liquid in the NMP tank car is pumped into the NMP storage tank through the pneumatic diaphragm pump, the liquid level is monitored through the first liquid level meter, and nitrogen gas is injected through the nitrogen gas inlet to carry out nitrogen sealing storage;
homogenate workshop NMP jar of keeping in, homogenate workshop NMP jar of keeping in through electronic diaphragm pump with the unloading valve links to each other, so that the use electronic diaphragm pump will the new liquid of NMP in the NMP accumulator is squeezed into in the homogenate workshop NMP jar of keeping in, be provided with the second level gauge in the homogenate workshop NMP jar of keeping in.
In addition, according to the utility model discloses a fresh liquid warehousing and transportation system of NMP for lithium power plant can also have following additional technical characterstic:
the utility model discloses in, the top of NMP storage jar still is provided with reserve feed valve and steam admission valve door, through steam admission valve door be suitable for to NMP storage jar is filled into the steam of certain pressure and is washd.
In the present invention, the NMP storage tank includes a plurality of tanks.
In the present invention, the volume of the NMP storage tank is 30m 3; the NMP temporary storage tank of the homogenization plant has a volume of 3m 3.
The utility model discloses in, NMP storage jar feed valve the material of unloading valve and intercommunication pipeline is SUS stainless steel.
The utility model discloses in, pneumatic diaphragm pump feed valve unloading valve the mutual intercommunication between electric diaphragm pump and the homogenate workshop NMP jar of keeping in all through PLC system control.
The utility model discloses in, set up first alarm in the NMP storage jar, when stating that the liquid level reaches the predetermined site in the NMP storage jar, first alarm is reported to the police.
The utility model discloses in, set up the second alarm in the homogenate workshop NMP jar of keeping in, when stating in the homogenate workshop NMP jar of keeping in liquid level reach the predetermined site, the second alarm reports to the police.
The utility model discloses in, first level gauge with pneumatic diaphragm pump passes through the PLC system links to each other, works as when first level gauge reaches predetermined locus, PLC system control pneumatic diaphragm pump is closed.
The utility model discloses in, the second level gauge with electronic diaphragm pump passes through the PLC system links to each other, works as when the second level gauge reaches predetermined locus, PLC system control electronic diaphragm pump closes.
Drawings
Fig. 1 is a schematic structural diagram of a NMP fresh liquid storage and transportation system for a lithium power plant according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
According to an aspect of the utility model, the utility model provides a new liquid warehousing and transportation system of NMP for lithium power plant. The NMP fresh liquid storage and transportation system according to the embodiment of the present invention will be described in detail with reference to fig. 1. According to the utility model discloses an embodiment, this warehousing and transportation system includes: NMP storage tank 100, pneumatic diaphragm pump 200, homogenate workshop NMP temporary storage tank 300 and electric diaphragm pump 400.
Wherein, the NMP storage tank 100 is provided with a feeding valve 110 and a nitrogen gas inlet 120 at the top, a blanking valve 130 at the bottom and a first liquid level meter 140 on the side wall, the feeding valve 110 is connected with an NMP tank car (not shown) through a pneumatic diaphragm pump 200, so that NMP fresh liquid in the NMP tank car is driven into the NMP storage tank 100 by the pneumatic diaphragm pump 200, the liquid level is monitored by the first liquid level meter 140, and nitrogen gas is injected through the nitrogen gas inlet 120 for nitrogen-sealed storage;
homogenate workshop NMP keep in jar 300 through electronic diaphragm pump 400 with unloading valve 130 links to each other, so that the use electronic diaphragm pump 400 will the new liquid of NMP in NMP storage jar 300 is squeezed into in the jar 300 is kept in to homogenate workshop NMP, be provided with second level gauge 310 in the jar 300 is kept in to homogenate workshop NMP.
The utility model discloses the operation method of the new liquid storage and transportation system of NMP of above-mentioned embodiment's adoption is as follows: firstly, purchased NMP is transported to a factory NMP storage area through a tank truck, then NMP new liquid in the tank truck is pumped into an NMP storage tank through a pneumatic diaphragm pump 200, the storage amount of the NMP is determined according to the liquid level condition displayed by a first liquid level meter 140 arranged in the NMP storage tank, and after the NMP storage tank 100 is filled, nitrogen is injected through a nitrogen inlet 120 for nitrogen sealing storage. The unloading valve of depositing the NMP storage tank is opened automatically according to the liquid level condition of homogenate workshop NMP jar of keeping in, carries NMP to the jar of keeping in of homogenate workshop NMP through electronic diaphragm pump 400 simultaneously, stops the knockout when NMP keeps in jar interior second level gauge 310 of jar and shows that the liquid level has reached the setting value.
From this, through adopting the utility model discloses the new liquid warehousing and transportation system of NMP of above-mentioned embodiment can effectively solve long-time extensive storage NMP, turnover, and the workshop commodity circulation of solving simultaneously in the NMP transportation is big, personnel's load of labour is big, the easy loss scheduling problem of NMP smell, and then has realized that NMP concentrates the purpose of storing, automatic transport for a long time.
According to an embodiment of the invention, the NMP storage tank comprises a plurality, preferably two. Further, large-scale storage of NMP can be realized. And the NMP storage tank may have a volume of 30m3. In addition, the volume of NMP temporary storage tank in homogenate workshop is 3m3. Thereby, the storage amount can be increased.
According to the utility model discloses a specific embodiment, the top of NMP storage jar 100 is provided with nitrogen gas air inlet 120, is suitable for through this nitrogen gas air inlet 120 to carry out the nitrogen-sealed storage to the NMP storage jar 100 internal injection nitrogen gas. Specifically, the nitrogen used for nitrogen sealing storage can be nitrogen with dew point less than-40 ℃ and purity more than 99.999%, and further the sealing reliability can be improved.
According to an embodiment of the present invention, the top of the NMP storage tank is further provided with a standby inlet valve 150 and a steam admission valve 160, through the steam admission valve 160 is adapted to clean the NMP storage tank 100 by charging steam of a certain pressure. This makes it possible to automatically clean the NMP storage tank 100, thereby reducing the labor load. Specifically, the NMP storage tank 100 is cleaned using a vapor pressure of 0.3MPa to 0.4 MPa. Furthermore, the cleaning efficiency can be improved, the cleaning degree after cleaning can be improved, in addition, the steam temperature of 0.3-0.4 Mpa is 130-140 ℃, the cleaning effect is better at the temperature, the safety coefficient is high, and the scalding risk caused by overhigh temperature can be prevented.
According to the utility model discloses an embodiment, NMP storage jar 100 feed valve 110 the material of unloading valve 130 and intercommunication pipeline is SUS stainless steel. Further, the corrosion of equipment, pipelines, valves and the like caused by storing NMP for a long time can be avoided. And further, the service life of the storage system is prolonged, and the safety is improved.
According to the utility model discloses an embodiment, pneumatic diaphragm pump the feed valve unloading valve the mutual intercommunication between electronic diaphragm pump and the homogenate workshop NMP jar of keeping in is all controlled through the PLC system (not shown). Specifically, when it is necessary to pump NMP into the NMP storage tank 100, the PLC system first controls the pneumatic diaphragm pump 200 and the feed valve 110 to be opened, and then pumps NMP into the NMP storage tank 100. When the NMP liquid level in the NMP storage tank 100 reaches a predetermined point, the PLC system controls the pneumatic diaphragm pump 200 and the feed valve 110 to close, thereby stopping the transfer of NMP into the NMP storage tank 100. When needing to be kept in jar 300 and squeeze into NMP to homogenate workshop NMP, the PLC system control unloading valve 130 and electronic diaphragm pump 400 are opened, and then are kept in jar 300 and are beaten into NMP to homogenate workshop NMP. When the NMP liquid level in the NMP storage tank 100 reaches a preset point, the PLC system controls the electric diaphragm pump 400 and the blanking valve 130 to be closed, and then the conveying of NMP to the NMP temporary storage tank 300 of the homogenizing workshop is stopped.
According to the utility model discloses an embodiment, set up first alarm 170 in NMP storage jar 100, when stating that the liquid level reaches the predetermined site in NMP storage jar 100, first alarm 170 reports to the police. Likewise, according to the utility model discloses an embodiment, set up second alarm 320 in the tank 300 is kept in to homogenate workshop NMP, when stating that the liquid level reaches the predetermined site in the tank 300 is kept in to homogenate workshop NMP, second alarm 320 reports to the police. From this, can remind the liquid level condition of NMP in staff NMP storage jar 100 and the homogenate workshop NMP jar 300 of keeping in through setting up first alarm 170 and second alarm 320, and then can in time close pneumatic diaphragm pump 200 and electronic diaphragm pump 400, avoid revealing.
According to the utility model discloses an embodiment, first level gauge 140 with pneumatic diaphragm pump 200 passes through the PLC system links to each other, works as when first level gauge 140 reaches predetermined locus, PLC system control pneumatic diaphragm pump 200 closes. Also, according to an embodiment of the present invention, the second level gauge 310 is connected to the electric diaphragm pump 400 through the PLC system, and when the second level gauge 310 reaches a predetermined position point, the PLC system controls the electric diaphragm pump 400 to be turned off. Thereby, the first level gauge 140 is connected to the pneumatic diaphragm pump 200 by a PLC system, and the second level gauge 310 is connected to the electric diaphragm pump 400 by a PLC system. The control of the liquid level can be automated, the liquid level condition does not need to be monitored manually in real time, the intellectualization can be obviously improved, and the labor load of personnel is reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A NMP fresh liquid storage and transportation system for a lithium power plant, comprising:
the NMP storage tank is characterized in that a feeding valve and a nitrogen gas inlet are arranged at the top of the NMP storage tank, a discharging valve is arranged at the bottom of the NMP storage tank, a first liquid level meter is arranged on the side wall of the NMP storage tank, the feeding valve is connected with an NMP tank car through a pneumatic diaphragm pump, so that NMP fresh liquid in the NMP tank car is pumped into the NMP storage tank through the pneumatic diaphragm pump, the liquid level is monitored through the first liquid level meter, and nitrogen gas is injected through the nitrogen gas inlet to carry out nitrogen sealing storage;
homogenate workshop NMP jar of keeping in, homogenate workshop NMP jar of keeping in through electronic diaphragm pump with the unloading valve links to each other, so that the use electronic diaphragm pump will the new liquid of NMP in the NMP accumulator is squeezed into in the homogenate workshop NMP jar of keeping in, be provided with the second level gauge in the homogenate workshop NMP jar of keeping in.
2. The system for storing and transporting fresh NMP liquid for a lithium power plant according to claim 1, wherein the top of the NMP storage tank is further provided with a spare feeding valve and a steam admission valve, and the NMP storage tank is cleaned by filling steam with a certain pressure through the steam admission valve.
3. The system for transporting fresh NMP liquid for a lithium power plant according to claim 1, characterized in that the NMP storage tank includes a plurality of tanks.
4. The system for transporting fresh NMP liquid for a lithium power plant according to claim 1, wherein the NMP storage tank has a volume of 30m3(ii) a Homogenate workshop NMP jar of keeping inVolume of 3m3。
5. The system for storing and transporting fresh NMP liquid for a lithium power plant according to claim 1, wherein the NMP storage tank, the feeding valve, the discharging valve and the communication pipeline are all made of SUS stainless steel.
6. The system for storing and transporting the fresh NMP liquid for the lithium power plant according to claim 1, wherein the pneumatic diaphragm pump, the feeding valve, the blanking valve, the electric diaphragm pump and the NMP temporary storage tank of the homogenizing shop are all controlled by a PLC system.
7. The system for storing and transporting fresh NMP liquid for a lithium power plant according to claim 1, wherein a first alarm is provided in the NMP storage tank, and the first alarm gives an alarm when the liquid level in the NMP storage tank reaches a predetermined point.
8. The system for storing and transporting fresh NMP liquid for a lithium power plant according to claim 7, wherein a second alarm is arranged in the NMP temporary storage tank of the homogenizing workshop, and the second alarm gives an alarm when the liquid level in the NMP temporary storage tank of the homogenizing workshop reaches a predetermined point.
9. The system for storing and transporting fresh NMP liquid for a lithium power plant according to claim 6, wherein the first liquid level meter is connected to the pneumatic diaphragm pump through the PLC system, and when the first liquid level meter reaches a predetermined point, the PLC system controls the pneumatic diaphragm pump to be closed.
10. The system for storing and transporting fresh NMP liquid for a lithium power plant according to claim 9, characterized in that the second liquid level meter is connected with the electric diaphragm pump through the PLC system, and the PLC system controls the electric diaphragm pump to be turned off when the second liquid level meter reaches a predetermined point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921281864.XU CN210885280U (en) | 2019-08-08 | 2019-08-08 | NMP (N-methyl pyrrolidone) fresh liquid storage and transportation system for lithium power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921281864.XU CN210885280U (en) | 2019-08-08 | 2019-08-08 | NMP (N-methyl pyrrolidone) fresh liquid storage and transportation system for lithium power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210885280U true CN210885280U (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921281864.XU Expired - Fee Related CN210885280U (en) | 2019-08-08 | 2019-08-08 | NMP (N-methyl pyrrolidone) fresh liquid storage and transportation system for lithium power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210885280U (en) |
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2019
- 2019-08-08 CN CN201921281864.XU patent/CN210885280U/en not_active Expired - Fee Related
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Granted publication date: 20200630 Termination date: 20210808 |