CN211274132U - High tower NMP tail gas environment-friendly device - Google Patents

High tower NMP tail gas environment-friendly device Download PDF

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Publication number
CN211274132U
CN211274132U CN201921525818.XU CN201921525818U CN211274132U CN 211274132 U CN211274132 U CN 211274132U CN 201921525818 U CN201921525818 U CN 201921525818U CN 211274132 U CN211274132 U CN 211274132U
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nmp
tail gas
pipe
tower
heat exchanger
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CN201921525818.XU
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Chinese (zh)
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刘德国
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Dongguan Zhenxin Environmental Protection Technology Co ltd
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Dongguan Zhenxin Environmental Protection Technology Co ltd
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Abstract

The utility model discloses a high tower NMP tail gas environment-friendly device, including treatment tower and heat exchanger, the inside below of treatment tower is provided with the heat exchanger, there is the inlet tube through threaded connection on the heat exchanger lateral wall, there is the outlet pipe through threaded connection above the inlet tube, the treatment tower with the heat exchanger passes through bolted connection. Has the advantages that: the utility model discloses an at the inside heat exchanger that sets up of treatment tower, can dissolve the abundant absorption utilization of heat that the aquatic produced with NMP tail gas for to the heat supply of external equipment, energy-concerving and environment-protective, simultaneously, the circulating pump can drive the inside NMP tail gas of treatment tower and circulate at shower head position, improves the absorption rate of recovery of NMP tail gas.

Description

High tower NMP tail gas environment-friendly device
Technical Field
The utility model relates to a NMP tail gas recovery technical field, concretely relates to tower NMP tail gas environment-friendly device of height.
Background
N-methyl pyrrolidone, NMP for short, colorless transparent liquid, boiling point, flash point, low viscosity, slightly ammonia smell, good chemical stability and thermal stability, high polarity, low volatility, and the like, can be mutually soluble with water in any ratio, NMP is the main component of waste gas discharged in the production of lithium ion batteries, is a toxic gas, and if the NMP is not recycled, not only causes environmental pollution, but also causes a great deal of waste of raw materials, so that the recycling treatment of NMP is an important link influencing environmental protection in the production process of green batteries.
However, in the use process of the existing NMP tail gas environment-friendly equipment, the heat generated in the process that the NMP tail gas is dissolved in the dissolving solution cannot be fully utilized, so that the resource waste is caused, and meanwhile, the NMP tail gas is dissolved only by once spraying equipment, so that the dissolving rate is low, and the problem of low recovery rate of the NMP tail gas is caused.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to overcome prior art not enough, now provide a high tower NMP tail gas environmental protection device, solved current NMP tail gas environmental protection equipment in the use, the NMP tail gas dissolves the heat that produces in the solution process can not abundant utilization, causes the waste of resource, simultaneously, only dissolves through once spray equipment at NMP tail gas, and the dissolution rate is low, causes the problem that the rate of recovery of NMP tail gas is low.
(II) technical scheme
The utility model discloses a following technical scheme realizes: the utility model provides a high tower NMP tail gas environment-friendly device, including treatment tower and heat exchanger, the inside below of treatment tower is provided with the heat exchanger, there is the inlet tube through threaded connection on the heat exchanger lateral wall, there is the outlet pipe inlet tube top through threaded connection, the treatment tower with the heat exchanger passes through bolted connection.
By adopting the technical scheme, the tail gas of the NMP can be fully absorbed and utilized by the heat exchanger to supply heat to external equipment, and the heat exchanger is energy-saving and environment-friendly.
Furthermore, an air inlet pipe is connected to one side wall of the treatment tower through a flange, and a liquid discharge pipe is connected to the other side wall of the treatment tower through a flange.
By adopting the technical scheme, the liquid discharge pipe is used for discharging the solution dissolved with the NMP tail gas, and the air inlet pipe is connected with external NMP tail gas discharging equipment.
Furthermore, a circulating pipe is connected above the liquid discharge pipe through a flange, a circulating pump is arranged on the circulating pipe, and the circulating pump is connected with the circulating pipe through threads.
By adopting the technical scheme, the circulating pump can drive the NMP tail gas in the treatment tower to circularly flow at the spray header part, so that the absorption recovery rate of the NMP tail gas is improved.
Furthermore, an exhaust pipe is connected above the treatment tower through a flange, and an exhaust valve is connected on the exhaust pipe through a flange.
By adopting the technical scheme, the exhaust pipe is used for exhausting the gas filtered by the activated carbon adsorption layer.
Furthermore, a PLC (programmable logic controller) is connected to one side wall of the treatment tower adjacent to the circulating pipe through a screw, and an NMP (N-methyl pyrrolidone) concentration online monitor is connected to the lower part inside the treatment tower through a screw.
Through adopting above-mentioned technical scheme, the gaseous concentration of NMP in the solution that has NMP tail gas can real-time detection of NMP concentration on-line monitoring appearance, is convenient for in time discharge the outside to dissolving the liquid, further carries out recycle to NMP.
Furthermore, the upper part of the heat exchanger is connected with a spray pipe through a buckle, and the lower part of the spray pipe is connected with a spray head through threads.
By adopting the technical scheme, the spray header below the spray pipe sprays the solution to dissolve NMP tail gas.
Furthermore, a liquid inlet pipe is connected to one side of the spraying pipe through threads, and an activated carbon adsorption layer is connected to the upper side of the spraying pipe through a clamping groove.
By adopting the technical scheme, the activated carbon adsorption layer is used for adsorbing the NMP tail gas.
(III) advantageous effects
Compared with the prior art, the utility model, following beneficial effect has:
1. in order to solve the problem that the heat generated in the process of dissolving the tail gas of the NMP in the solution cannot be fully utilized and resources are wasted in the use process of the existing NMP tail gas environment-friendly equipment, the heat exchanger is arranged in the treatment tower, so that the heat generated in the process of dissolving the tail gas of the NMP in the water can be fully absorbed and utilized, and the heat exchanger is used for supplying heat to external equipment, and is energy-saving and environment-friendly;
2. for only dissolving through once spray set in solving current NMP tail gas environmental protection equipment NMP tail gas, the dissolution rate is low, causes the problem that the rate of recovery of NMP tail gas is low, the utility model provides a circulating pump can drive the inside NMP tail gas of treating tower and circulate at shower head position, improves the absorption rate of recovery of NMP tail gas.
Drawings
FIG. 1 is a front view of a high tower type NMP tail gas environmental protection device according to the present invention;
FIG. 2 is a main sectional view of the high tower type NMP tail gas environmental protection device of the present invention;
fig. 3 is a top view of the spray pipe position in the high tower type NMP tail gas environmental protection device of the present invention.
The reference numerals are explained below:
1. a treatment tower; 2. an air inlet pipe; 3. a heat exchanger; 4. a water outlet pipe; 5. a water inlet pipe; 6. a liquid discharge pipe; 7. an exhaust pipe; 8. an exhaust valve; 9. a circulation pipe; 10. a circulation pump; 11. a liquid inlet pipe; 12. a shower pipe; 13. a shower head; 14. an activated carbon adsorption layer; 15. an NMP concentration on-line monitor; 16. a PLC controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-3, the high tower type NMP tail gas environment-friendly device in the embodiment includes a treatment tower 1 and a heat exchanger 3, the heat exchanger 3 is arranged below the inside of the treatment tower 1, a water inlet pipe 5 is connected to one side wall of the heat exchanger 3 through a thread, a water outlet pipe 4 is connected to the upper side of the water inlet pipe 5 through a thread, the treatment tower 1 is connected to the heat exchanger 3 through a bolt, and the NMP tail gas can be sufficiently absorbed and utilized by the heat exchanger 3 through the heat generated by dissolving the NMP tail gas in water, so as to supply heat to external equipment, save.
As shown in fig. 1-3, in this embodiment, a spray pipe 12 is connected above the heat exchanger 3 through a buckle, a spray head 13 is connected below the spray pipe 12 through a thread, a dissolving liquid is sprayed out from the spray head 13 below the spray pipe 12 to dissolve the NMP tail gas, a circulating pipe 9 is connected above the liquid discharge pipe 6 through a flange, a circulating pump 10 is arranged on the circulating pipe 9, the circulating pump 10 is connected with the circulating pipe 9 through a thread, and the circulating pump 10 can drive the NMP tail gas inside the treatment tower 1 to circularly flow at the spray head 13, so as to improve the absorption recovery rate of the NMP tail gas.
As shown in fig. 1-2, in this embodiment, an air inlet pipe 2 is connected to one side wall of a treatment tower 1 through a flange, a drain pipe 6 is connected to the other side wall of the treatment tower 1 through a flange, the drain pipe 6 is used for discharging a solution of NMP dissolved tail gas, the air inlet pipe 2 is connected to an external NMP tail gas discharging device, an exhaust pipe 7 is connected to the upper part of the treatment tower 1 through a flange, an exhaust valve 8 is connected to the exhaust pipe 7 through a flange, the exhaust pipe 7 is used for discharging gas filtered by an activated carbon adsorption layer 14, a PLC controller 16 is connected to one side wall of the treatment tower 1 adjacent to a circulating pipe 9 through a screw, an NMP concentration on-line monitor 15 is connected to the lower part inside the treatment tower 1 through a screw, the model of the NMP concentration on-line monitor 15 is LB-8S, the NMP concentration on-line monitor 15, be convenient for in time discharge outside to dissolving the liquid, further carry out recycle to NMP, there is feed liquor pipe 11 shower 12 one side through threaded connection, is connected with active carbon adsorption layer 14 through the draw-in groove in shower 12 top, and active carbon adsorption layer 14 is used for adsorbing the gas that contains NMP tail gas.
The specific implementation process of this embodiment is as follows: when the high tower type NMP tail gas environment-friendly device is used, the air inlet pipe 2 is connected with an external NMP gas exhaust device, the water inlet pipe 5 is connected with a water source which needs to be heated outside, the water outlet pipe 4 is connected with external hot water using equipment, the liquid inlet pipe 11 is connected with an external NMP dissolving liquid output pipeline, the liquid discharge pipe 6 is separated from the external NMP, and the recovery device is connected, when the NMP tail gas enters the treatment tower 1, the NMP tail gas can be dissolved in the dissolving liquid sprayed out by the spray header 13 when passing through the lower part of the spray header 13, the NMP tail gas can release a large amount of heat after being dissolved in the dissolving liquid, after the dissolving liquid dissolved with the NMP tail gas passes through the heat exchanger 3, the heat exchange is carried out with the water source inside the heat exchanger 3, the heat generated by dissolving the NMP tail gas in water can be fully absorbed and utilized through the heat exchanger 3, the heat supply is used for external equipment, energy conservation and environmental protection are realized, and meanwhile The absorption recovery rate of the NMP tail gas can be improved, and then the NMP tail gas after treatment is discharged to the outside through the exhaust pipe 7 after being purified by the activated carbon adsorption layer 14.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims (7)

1. The utility model provides a high tower NMP tail gas environment-friendly device which characterized in that: including treatment tower (1) and heat exchanger (3), the inside below of treatment tower (1) is provided with heat exchanger (3), there is inlet tube (5) through threaded connection on heat exchanger (3) a lateral wall, there is outlet pipe (4) through threaded connection above inlet tube (5), treatment tower (1) with heat exchanger (3) pass through bolted connection.
2. The high tower type NMP tail gas environment-friendly device according to claim 1, characterized in that: the device is characterized in that an air inlet pipe (2) is connected to one side wall of the treatment tower (1) through a flange, and a liquid discharge pipe (6) is connected to the other side wall of the treatment tower (1) through a flange.
3. The high tower type NMP tail gas environment-friendly device according to claim 2, characterized in that: the liquid discharging pipe (6) is connected with a circulating pipe (9) through a flange, a circulating pump (10) is arranged on the circulating pipe (9), and the circulating pump (10) is connected with the circulating pipe (9) through threads.
4. The high tower type NMP tail gas environment-friendly device according to claim 1, characterized in that: the processing tower (1) top has blast pipe (7) through flange joint, there is discharge valve (8) through flange joint on blast pipe (7).
5. The high tower type NMP tail gas environment-friendly device according to claim 3, characterized in that: the treatment tower (1) and the adjacent side wall of the circulating pipe (9) are connected with a PLC (programmable logic controller) controller (16) through screws, and an NMP concentration online monitor (15) is connected to the lower part inside the treatment tower (1) through screws.
6. The high tower type NMP tail gas environment-friendly device according to claim 1, characterized in that: the heat exchanger (3) is connected with a spray pipe (12) through a buckle, and a spray head (13) is connected with the lower part of the spray pipe (12) through threads.
7. The high tower type NMP tail gas environment-friendly device according to claim 6, characterized in that: one side of the spraying pipe (12) is connected with a liquid inlet pipe (11) through threads, and an activated carbon adsorption layer (14) is connected above the spraying pipe (12) through a clamping groove.
CN201921525818.XU 2019-09-12 2019-09-12 High tower NMP tail gas environment-friendly device Active CN211274132U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921525818.XU CN211274132U (en) 2019-09-12 2019-09-12 High tower NMP tail gas environment-friendly device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921525818.XU CN211274132U (en) 2019-09-12 2019-09-12 High tower NMP tail gas environment-friendly device

Publications (1)

Publication Number Publication Date
CN211274132U true CN211274132U (en) 2020-08-18

Family

ID=72025548

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921525818.XU Active CN211274132U (en) 2019-09-12 2019-09-12 High tower NMP tail gas environment-friendly device

Country Status (1)

Country Link
CN (1) CN211274132U (en)

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