CN217526952U

CN217526952U - NMP solvent absorption tower is used in lithium ion battery production and processing

Info

Publication number: CN217526952U
Application number: CN202221050404.8U
Authority: CN
Inventors: 刘志远; 张涛; 贾和坤
Original assignee: Wuxi Guangbo Technology Co ltd
Current assignee: Wuxi Guangbo Technology Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-10-04
Anticipated expiration: 2032-05-05

Abstract

The utility model discloses a lithium ion battery production and processing is with NMP solvent absorption tower relates to lithium ion battery production technical field, and the absorption tower for solving current lithium ion battery plant use is in inside to the separation operation of gas-liquid phase, and is not fine enough, has to take impurity in the gas not to have the clean up's problem. Total connecting tube installs NMP solvent absorption tower main part outside one side, one side of terminal surface under NMP solvent absorption tower main part is installed to total connecting tube's one end, total connecting tube's the other end is provided with the shunt, the outside of shunt is provided with first connecting tube and second connecting tube respectively, first connecting tube and second connecting tube run through and extend to the inside of NMP solvent absorption tower main part, interior cavity is installed the inside of NMP solvent absorption tower main part, the inside first central dwang of interior cavity, and the one end of first central dwang runs through and extends to inside the motor.

Description

NMP solvent absorption tower is used in lithium ion battery production and processing

Technical Field

The utility model relates to a lithium ion battery production technical field specifically is a lithium ion battery production NMP solvent absorption tower for processing.

Background

A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. During charging and discharging, li + is inserted and extracted back and forth between two electrodes: during charging, li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. Lithium ion batteries are easily confused with (1) lithium batteries: metallic lithium is used as a negative electrode. (2) lithium ion battery: a non-aqueous liquid organic electrolyte is used. (3) lithium ion polymer battery: the polymer is used to gel the liquid organic solvent, or the all-solid electrolyte is directly used. The lithium ion battery generally uses a graphite carbon material as a negative electrode, and when the lithium ion battery is processed and produced, an NMP solvent needs to be used in an absorption tower for corresponding operation.

For example, no. 201210362311.3 (a method for recovering NMP solvent in lithium ion battery production) includes: the method comprises the following processing steps: (1) Absorbing the NMP mixed gas by a spray absorption tower to prepare a mixed solution containing high-concentration NMP: pumping out NMP mixed gas and conveying the NMP mixed gas to a spray tower, and conveying NMP crude product liquid to a crude product tank; (2) And (3) carrying out vacuum rectification and heating on the crude NMP liquid to separate water from NMP, introducing the recovered finished product into a batching plant through a pipeline for production, and repeatedly using NM and repeatedly recovering NM. The water and NMP are sequentially separated in a gaseous state by heating, and are purified by condensation and collection, so that the aim of recovering finished products is fulfilled.

However, the absorption tower used in the existing lithium ion battery production has the problems that the operation of separating gas and liquid phases in the absorption tower is not fine enough, and impurities in gas are carried and cannot be cleaned; therefore, the existing requirements are not met, and an NMP solvent absorption tower for producing and processing the lithium ion battery is provided for the NMP solvent absorption tower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium ion battery production NMP solvent absorption tower for processing to solve the absorption tower of current lithium ion battery plant use that proposes in the above-mentioned background art, in inside to the separation operation of gas-liquid phase, it is not fine enough, have in the gas to take impurity not have the clean up problem.

In order to achieve the above object, the utility model provides a following technical scheme: an NMP solvent absorption tower for lithium ion battery production and processing comprises: the device comprises an NMP solvent absorption tower main body, a gas conveying pipeline is arranged above the NMP solvent absorption tower main body, and a liquid discharge pipeline is arranged on the lower end face of the NMP solvent absorption tower main body;

further comprising:

the NMP solvent absorption tower comprises a main connecting pipeline, a main connecting pipeline and a flow divider, wherein the main connecting pipeline is arranged on one side of the outer part of the NMP solvent absorption tower body, one end of the main connecting pipeline is arranged on one side of the lower end face of the NMP solvent absorption tower body, the other end of the main connecting pipeline is provided with the flow divider, the outer side of the flow divider is respectively provided with a first connecting pipeline and a second connecting pipeline, and the first connecting pipeline and the second connecting pipeline penetrate through and extend into the NMP solvent absorption tower body;

interior cavity, it is installed the inside of NMP solvent absorption tower main part, the inside first center dwang of cavity, and inside the one end of first center dwang runs through and extends to the motor, the intermediate position department of first center dwang outer wall is provided with first interlock gear, the top of first interlock gear is provided with second interlock gear, the up end of second interlock gear is provided with the center dwang of second, the one end of the center dwang of second is provided with the input end, one side of terminal surface is provided with liquid pipeline under the input end, liquid pipeline's one end is provided with the pump, and the pump is installed in one side of the center dwang outer wall of second.

Preferably, the round of first central dwang outer wall all is provided with first stirring leaf, and just first stirring leaf is provided with a plurality of, the opposite side of second central dwang outer wall is provided with the second and stirs the leaf, and the second stirs the leaf and is provided with two.

Preferably, a first demisting nozzle is arranged above the input end, a second demisting nozzle is arranged in the inner cavity, a fine drop nozzle is arranged above the second demisting nozzle, and a pool separator is arranged below the inner cavity.

Preferably, a reserved hole groove is formed in the middle of the interior of the pool separator, and the reserved hole groove and the pool separator are integrally formed.

Preferably, an electrically operated valve is disposed on a lower end surface of the liquid discharge pipe, and two observation windows are disposed on a front end surface of the NMP solvent absorption tower main body.

Preferably, a motor is arranged below the other side of the NMP solvent absorption tower main body, and the motor is fixedly connected with the NMP solvent absorption tower main body.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a second interlock gear that sets up, the central dwang of second, input end and first defogging nozzle, inside first center dwang rotates and drives first stirring bucket when stirring, the second interlock gear that can say the setting drives the rotation, make second center dwang can drive the input end and rotate, thereby make first defogging nozzle can the omnidirectional spray that carries out, improve the effective space of spraying, avoid the absorption tower of current lithium ion battery plant use in inside to the gas-liquid looks separating operation, it is not fine enough, there is gaseous to take impurity not clean up's problem.

2. Through the main connecting pipeline, the shunt, the first connecting pipeline and the second connecting pipeline which are arranged, the object combinations can recycle the liquid inside, and the purpose of cleaning the gas and filtering the gas is achieved without using external liquid.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the main body of the NMP solvent absorption tower of the present invention;

FIG. 3 is a schematic view of a partial structure of a tank separator according to the present invention;

in the figure: 1. an NMP solvent absorption tower main body; 2. a motor; 3. a gas delivery conduit; 4. a liquid discharge conduit; 5. an electrically operated valve; 6. a main connecting pipeline; 7. a flow divider; 8. a first connecting pipe; 9. a second connecting pipe; 10. an observation window; 11. an inner cavity; 12. a first central rotating shaft; 13. a first agitating blade; 14. a first meshing gear; 15. a second meshing gear; 16. a second central rotating shaft; 17. a pump; 18. a second agitating blade; 19. a liquid delivery conduit; 20. a tank separator; 21. an input end; 22. a first demisting nozzle; 23. a second demisting nozzle; 24. a fine drop nozzle; 25. and (5) reserving a hole groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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: an NMP solvent absorption tower for lithium ion battery production and processing comprises: a NMP solvent absorption tower main body 1, a gas conveying pipeline 3 is arranged above the NMP solvent absorption tower main body 1, and a liquid discharge pipeline 4 is arranged on the lower end face of the NMP solvent absorption tower main body 1;

further comprising:

the NMP solvent absorption tower comprises a main connecting pipeline 6, a flow divider 7 and a first connecting pipeline 8 and a second connecting pipeline 9, wherein the main connecting pipeline 6 is arranged on one side of the outer portion of an NMP solvent absorption tower main body 1, one end of the main connecting pipeline 6 is arranged on one side of the lower end face of the NMP solvent absorption tower main body 1, the other end of the main connecting pipeline 6 is provided with the flow divider 7, the outer side of the flow divider 7 is respectively provided with the first connecting pipeline 8 and the second connecting pipeline 9, and the first connecting pipeline 8 and the second connecting pipeline 9 penetrate through and extend into the NMP solvent absorption tower main body 1;

the inner cavity 11 is arranged inside the NMP solvent absorption tower main body 1, a first central rotating rod 12 inside the inner cavity 11, one end of the first central rotating rod 12 penetrates through and extends into the motor 2, a first meshing gear 14 is arranged in the middle of the outer wall of the first central rotating rod 12, a second meshing gear 15 is arranged above the first meshing gear 14, a second central rotating rod 16 is arranged on the upper end face of the second meshing gear 15, an input end head 21 is arranged at one end of the second central rotating rod 16, a liquid conveying pipeline 19 is arranged on one side of the lower end face of the input end head 21, a pump 17 is arranged at one end of the liquid conveying pipeline 19, and the pump 17 is arranged on one side of the outer wall of the second central rotating rod 16.

Referring to fig. 2, a circle of the outer wall of the first central rotating rod 12 is provided with a plurality of first stirring blades 13, and the other side of the outer wall of the second central rotating rod 16 is provided with a plurality of second stirring blades 18, and the number of the second stirring blades 18 is two.

Referring to fig. 2, a first demisting nozzle 22 is disposed above the input end 21, a second demisting nozzle 23 is disposed inside the inner cavity 11, a fine droplet nozzle 24 is disposed above the second demisting nozzle 23, a pool separator 20 is disposed below the inner cavity 11, and the first demisting nozzle 22 and the second demisting nozzle 23 are disposed to filter and purify the gas.

Referring to fig. 3, a preformed hole groove 25 is formed at the middle position inside the pool separator 20, and the preformed hole groove 25 and the pool separator 20 are integrally formed to enhance the strength of the object.

Referring to fig. 1, an electrically operated valve 5 is disposed on a lower end surface of a liquid discharge pipe 4, two observation windows 10 are disposed on a front end surface of an nmp solvent absorption tower main body 1, and the arrangement of the observation windows 10 is convenient for external workers to observe the inside.

Referring to fig. 1, a motor 2 is arranged below the other side of the NMP solvent absorption tower main body 1, the motor 2 is fixedly connected with the NMP solvent absorption tower main body 1, and the arrangement of the motor 2 improves the power rotation support.

The working principle is as follows: the device is when using, the gas transmission pipeline 3 that sets up in NMP solvent absorption tower main part 1 top discharges two kinds of forms after handling respectively with liquid exhaust pipe 4, the gas-liquid material after getting into is through stirring, can make the quick separation of inside gas, and the gas of separating is at the in-process that rises, self can carry certain impurity, the first defogging nozzle 22 and the second defogging nozzle 23 of setting can aggravate the impurity in the gas, let the pure maximize of gas that rises obtain the guarantee, inside when stirring, the second interlock gear 15 of setting drives the rotation, make second center dwang 16 can drive input end 21 and rotate, thereby make first defogging nozzle 22 can the omnidirectional spray, avoid the space of omitting.

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

1. An NMP solvent absorption tower for lithium ion battery production and processing comprises an NMP solvent absorption tower main body (1), wherein a gas conveying pipeline (3) is arranged above the NMP solvent absorption tower main body (1), and a liquid discharge pipeline (4) is arranged on the lower end face of the NMP solvent absorption tower main body (1);

the method is characterized in that: further comprising:

the NMP solvent absorption tower comprises a main connecting pipeline (6) which is arranged on one side of the outside of the NMP solvent absorption tower body (1), one end of the main connecting pipeline (6) is arranged on one side of the lower end face of the NMP solvent absorption tower body (1), the other end of the main connecting pipeline (6) is provided with a flow divider (7), the outer side of the flow divider (7) is respectively provided with a first connecting pipeline (8) and a second connecting pipeline (9), and the first connecting pipeline (8) and the second connecting pipeline (9) penetrate through and extend to the inside of the NMP solvent absorption tower body (1);

interior cavity (11), it is installed the inside of NMP solvent absorption tower main part (1), the inside first center dwang (12) of interior cavity (11), and the one end of first center dwang (12) runs through and extends to inside motor (2), the intermediate position department of first center dwang (12) outer wall is provided with first interlock gear (14), the top of first interlock gear (14) is provided with second interlock gear (15), the up end of second interlock gear (15) is provided with second center dwang (16), the one end of second center dwang (16) is provided with input end (21), one side of input end (21) lower extreme face is provided with liquid conveying pipeline (19), the one end of liquid conveying pipeline (19) is provided with pump (17), and pump (17) are installed in one side of second center dwang (16) outer wall.

2. The NMP solvent absorption tower for the production and processing of the lithium ion battery according to claim 1, characterized in that: the one-circle of first central dwang (12) outer wall all is provided with first stirring leaf (13), and first stirring leaf (13) are provided with a plurality of, the opposite side of second central dwang (16) outer wall is provided with second stirring leaf (18), and second stirring leaf (18) are provided with two.

3. The NMP solvent absorption tower for the production and processing of the lithium ion battery according to claim 1, characterized in that: the top of input end (21) is provided with first defogging nozzle (22), the inside of interior cavity (11) is provided with second defogging nozzle (23), the top of second defogging nozzle (23) is provided with meticulous drip formula nozzle (24), the inside below of interior cavity (11) is provided with pond separator (20).

4. The NMP solvent absorption tower for the production and processing of the lithium ion battery according to claim 3, characterized in that: a reserved hole groove (25) is formed in the middle of the interior of the pool separator (20), and the reserved hole groove (25) and the pool separator (20) are integrally formed.

5. The NMP solvent absorption tower for the production and processing of the lithium ion battery according to claim 1, characterized in that: the lower end face of the liquid discharge pipeline (4) is provided with an electric valve (5), the front end face of the NMP solvent absorption tower main body (1) is provided with two observation windows (10), and the number of the observation windows (10) is two.

6. The NMP solvent absorption tower for the production and processing of the lithium ion battery according to claim 1, characterized in that: the NMP solvent absorption tower is characterized in that a motor (2) is arranged below the other side of the NMP solvent absorption tower main body (1), and the motor (2) is fixedly connected with the NMP solvent absorption tower main body (1).