CN210613276U - Energy-conserving recovery unit of NMP solvent - Google Patents
Energy-conserving recovery unit of NMP solvent Download PDFInfo
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- CN210613276U CN210613276U CN201921436118.3U CN201921436118U CN210613276U CN 210613276 U CN210613276 U CN 210613276U CN 201921436118 U CN201921436118 U CN 201921436118U CN 210613276 U CN210613276 U CN 210613276U
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Abstract
The utility model provides an energy-conserving recovery unit of NMP solvent, includes the box, its characterized in that: and a heat exchanger, a first condenser, a second condenser, a liquid blocking plate, a honeycomb adsorption rotating wheel and an electric heater are sequentially arranged in the box body along the gas flowing direction. The utility model discloses the high temperature air who contains the NMP solvent from coating machine comes at first cools high temperature air and the low temperature air after the condensation through heat exchanger, reduce the temperature of high temperature air in the coating machine air incoming after the heat exchange, improve the low temperature air temperature after the condensation simultaneously, play the energy-conserving effect of heat recovery, heat through first condenser absorbed air, become liquid with the gaseous condensation of a small part high concentration NMP simultaneously and retrieve, waste heat through second condenser degree of depth absorbed air, become liquid with the gaseous condensation of most high concentration NMP simultaneously and retrieve, adsorb NMP through honeycomb adsorption pulley, the work of going round and round like this, NMP in the messenger air obtains effectual processing recovery.
Description
Technical Field
The utility model relates to a solvent recovery technical field especially relates to an energy-conserving recovery unit of NMP solvent.
Background
Lithium batteries, as a new energy storage carrier and a new energy field, play an increasingly important role in the process of changing the human life style. The coating process of the lithium battery pole piece is a key process in the production process of the lithium battery, and the coating quality directly influences the capacity and safety of the battery. An NMP solvent is required to be used in the working process of the lithium battery pole piece coating machine for mixing an electrode material, a conductive agent and an adhesive; however, the oil was colorless and transparent, and had a slight odor of amine. Can be mutually soluble with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon and castor oil. Low volatility, good thermal stability and chemical stability, and can be volatilized with water vapor. It has hygroscopic property. Is sensitive to light. Half of the lethal dose (rat, oral) was 3.8 mg/kg. Therefore, the high-temperature air containing the NMP solvent discharged by the lithium battery pole piece coating machine needs to be recycled, so that the problems of air pollution and human health hazard are solved.
However, the existing recovery device for discharging high-temperature air containing NMP solvent to the lithium battery pole piece coater has the problems of serious energy waste and unsatisfactory recovery effect.
Disclosure of Invention
The utility model provides an energy-conserving recovery unit of NMP solvent can solve the problem of proposing among the above-mentioned background art.
The technical scheme of the utility model is that: the utility model provides an energy-conserving recovery unit of NMP solvent, includes the box, its characterized in that: the utility model discloses a desorption device, including the box, the box is internal along gas flow direction has set gradually heat exchanger, first condenser, second condenser, hinder liquid board, honeycomb adsorption runner, electric heater in the box, the box external fixation has the drive speed reducer, the honeycomb adsorption runner passes through drive chain, transmission shaft and is connected with the drive speed reducer transmission, the honeycomb adsorption runner includes adsorption zone sector, desorption zone sector and cooling space sector, the box external fixation has desorption fan and forced draught blower, the adsorption zone sector is left and right sides be provided with tail gas respectively and advance adsorption zone pipeline, net gas and advance the forced draught blower pipeline, the air outlet of forced draught blower is gone into the cooling space pipeline through net gas and is advanced heat exchanger pipe connection, both sides are provided with desorption fan and electric heater respectively about the desorption district, desorption fan goes out desorption district pipeline one end connection desorption zone sector through desorption air, the other end is connected with an inlet of a first condenser, the left side and the right side of the cooling area sector are respectively provided with a clean air inlet cooling area pipeline and a clean air outlet cooling area pipeline, the clean air outlet cooling area pipeline is connected with an electric heater, and the electric heater is connected with a desorption area sector through desorption air inlet desorption area pipelines.
Furthermore, a liquid blocking plate for preventing condensed NMP liquid from being brought into the honeycomb adsorption rotating wheel is arranged in the box body.
Furthermore, a liquid outlet is formed in the side wall of the lower portion of the box body.
The utility model has the advantages that: the high-temperature air containing the NMP solvent from the coating machine is firstly cooled and heat-exchanged by a heat exchanger and the condensed low-temperature air, then the temperature of the high-temperature air in the air from the coating machine is reduced, meanwhile, the temperature of the condensed low-temperature air is increased, the heat recovery and energy saving effects are achieved, then the high-temperature air is sequentially treated by a first condenser and a second condenser, the heat of the air is absorbed by the first condenser, a small part of high-concentration NMP gas is condensed into liquid for recovery, the waste heat of the air is deeply absorbed by the second condenser, meanwhile, most of the high-concentration NMP gas is condensed into liquid for recovery, and the condensed NMP liquid is intensively discharged into a storage tank through a liquid outlet 4; the air containing the NMP solvent and treated by the first condenser and the second condenser is treated by a honeycomb adsorption rotating wheel, and the honeycomb adsorption rotating wheel comprises an adsorption area sector, a desorption area sector and a cooling area sector; drive chain by the drive reducer and make the honeycomb adsorb the slow rotation of runner, adsorb when the honeycomb and rotate to the adsorption zone sector, contain trace NMP in the wind and carry out effectual absorption, along with the rotation of honeycomb adsorption runner, when the adsorption zone sector revolves to the desorption zone sector, come out through the effectual desorption of high temperature air with the NMP of absorption, the sector revolves to the cooling zone sector after the desorption, adsorb the runner to the honeycomb and carry out air cooling, the sector after the cooling is revolved again and is adsorbed to the adsorption zone sector and adsorb NMP, the work of going round and going round like this, NMP in the messenger air obtains effectual processing and retrieves.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In fig. 1: 1-heat exchanger, 2-clean gas outlet cooling area pipeline, 3-first condenser, 4-liquid outlet, 5-second condenser, 6-desorption fan, 7-liquid blocking plate, 8-box, 9-honeycomb adsorption rotating wheel, 91-adsorption area sector, 92-cooling area sector, 93-desorption area sector, 10-driving chain, 11-electric heater, 12-driving shaft, 13-driving speed reducer, 14-blower, 15-tail gas inlet adsorption area pipeline, 16-clean gas inlet blower pipeline, 17-clean gas outlet blower pipeline, 18-clean gas inlet heat exchanger pipeline, 19-desorption air outlet desorption area pipeline, 20-clean gas inlet cooling area pipeline, and 21-desorption air inlet desorption area pipeline.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the utility model provides a pair of energy-conserving recovery unit of NMP solvent, including box 8, heat exchanger 1, first condenser 3, second condenser 5, liquid blocking plate 7, honeycomb absorption runner 9, electric heater 11 have set gradually along the gas flow direction in the box 8, box 8 external fixation has drive reducer 13, honeycomb absorption runner 9 passes through drive chain 10, transmission shaft 12 and is connected with drive reducer 13 transmission, honeycomb absorption runner 9 includes adsorption zone sector 91, desorption zone sector 93 and cooling zone sector 92, box 8 external fixation has desorption fan 6 and forced draught blower 14, adsorption zone sector 91 left and right sides is provided with tail gas respectively and advances adsorption zone pipeline 15, net gas advances forced draught blower pipeline 16, the air outlet of forced draught blower 14 advances cooling zone pipeline 20 through net gas play forced draught blower pipeline 17 and net gas through net gas, The clean gas enters heat exchanger pipeline 18 and connects, both sides are provided with desorption fan 6 and electric heater 11 respectively about desorption district sector 93, and desorption fan 6 goes out desorption district pipeline 19 one end through the desorption air and connects desorption district sector 93, and the first condenser 3 entry is connected to the other end, both sides are provided with clean gas respectively about cooling district sector 92 and advance cooling district pipeline 20 and clean gas and go out cooling district pipeline 2, and clean gas goes out cooling district pipeline 2 and connects electric heater 11, and electric heater 11 advances desorption district pipeline 21 through the desorption air and connects desorption district sector 93.
The heat exchanger 1 exchanges heat with high-temperature air containing high-concentration NMP in air coming from the coating machine, the high-temperature air and the condensed low-temperature air are subjected to cold and heat exchange, the temperature of the high-temperature air coming from the coating machine is reduced, and meanwhile, the temperature of the condensed low-temperature air is increased, so that the heat recovery and energy saving effects are achieved; the desorption fan 6 sends the high-concentration NMP gas desorbed from the honeycomb adsorption rotating wheel 9 back to the first condenser 3, and the condensed liquid is recovered at the same time; the transmission chain 10 drives the transmission chain 10 by the driving speed reducer 13 to enable the honeycomb adsorption rotating wheel 9 to slowly rotate; the electric heater 11 heats the air, so that the NMP adsorbed by the honeycomb adsorption rotating wheel 9 is desorbed; the transmission shaft 12 is connected with a driving speed reducer 13 to drive the honeycomb adsorption rotating wheel 9 to rotate.
In this embodiment, the honeycomb adsorbing wheel 9 includes an adsorbing area sector 91, a desorbing area sector 93 and a cooling area sector 92; drive chain 10 by drive reducer 13 and make honeycomb adsorb runner 9 slow rotation, when honeycomb adsorbs runner 9 and rotates to adsorption zone sector 91, contain trace NMP in the incoming air and carry out effectual absorption, along with honeycomb adsorbs runner 9's rotation, when adsorption zone sector 91 gyration to desorption zone sector 93, go out the effectual desorption of adsorbed NMP through high temperature air, the sector gyration is to cooling zone sector 92 after the desorption, adsorb runner 9 to the honeycomb and carry out air cooling, the sector after the cooling is gyrated to adsorption zone sector 91 again and is adsorbed NMP, the work of going round and going round like this, NMP in the messenger air obtains effectual processing recovery.
In this embodiment, the box body 8 is a sealed structure, and controls harmful gas not to diffuse into the atmosphere.
In this embodiment, a liquid blocking plate 7 for preventing the condensed NMP liquid from being carried into the honeycomb adsorbing wheel 9 is provided in the box 8.
In this embodiment, a liquid outlet 4 is provided on the lower side wall of the box 8, and condensed NMP liquid is intensively discharged into the storage tank.
The working principle is as follows: the high-temperature air containing the NMP solvent from the coating machine is firstly cooled and heat-exchanged by the heat exchanger 1 with the high-temperature air and the condensed low-temperature air, then the temperature of the high-temperature air in the air from the coating machine is reduced, meanwhile, the temperature of the condensed low-temperature air is increased, the heat recovery and energy saving effects are achieved, then the high-temperature air is sequentially processed by the first condenser 3 and the second condenser 5, the heat of the air is absorbed by the first condenser 3, meanwhile, a small part of high-concentration NMP gas is condensed into liquid to be recovered, the waste heat of the air is deeply absorbed by the second condenser 5, meanwhile, a large part of high-concentration NMP gas is condensed into liquid to be recovered, and the condensed NMP liquid is intensively discharged into the;
the air containing the NMP solvent and treated by the first condenser 3 and the second condenser 5 is treated by a honeycomb adsorption rotating wheel 9, and the honeycomb adsorption rotating wheel 9 comprises an adsorption area sector 91, a desorption area sector 93 and a cooling area sector 92; drive chain 10 by drive reducer 13 and make honeycomb adsorb runner 9 slow rotation, when honeycomb adsorbs runner 9 and rotates to adsorption zone sector 91, contain trace NMP in the incoming air and carry out effectual absorption, along with honeycomb adsorbs runner 9's rotation, when adsorption zone sector 91 gyration to desorption zone sector 93, go out the effectual desorption of adsorbed NMP through high temperature air, the sector gyration is to cooling zone sector 92 after the desorption, adsorb runner 9 to the honeycomb and carry out air cooling, the sector after the cooling is gyrated to adsorption zone sector 91 again and is adsorbed NMP, the work of going round and going round like this, NMP in the messenger air obtains effectual processing recovery.
Because a small part of external air is sucked in when the coating machine works, the blower 14 sends most of the low-temperature air which is condensed and contains trace NMP to the heat exchanger 1 to be heated and then sent back to the coating machine, thereby achieving the purpose of recycling and saving energy.
Claims (3)
1. The utility model provides an energy-conserving recovery unit of NMP solvent, includes box (8), its characterized in that: heat exchanger (1), first condenser (31), second condenser (51), hinder liquid board (7), honeycomb absorption runner (9), electric heater (11) have been set gradually along gas flow direction in box (8), box (8) external fixation has drive speed reducer (13), honeycomb absorption runner (9) are connected with drive speed reducer (13) transmission through drive chain (10), transmission shaft (12), honeycomb absorption runner (9) are including adsorption zone sector (91), desorption district sector (93) and cooling space sector (92), box (8) external fixation has desorption fan (6) and forced draught blower (14), both sides are provided with tail gas respectively about adsorption zone sector (91) and advance adsorption zone pipeline (15), the forced draught blower pipeline (16) is advanced to the net gas, the air outlet of forced draught blower (14) advances cooling zone pipeline (20) through net gas play forced draught blower pipeline (17) and net gas, The clean gas enters the heat exchanger pipeline (18) and connects, both sides are provided with desorption fan (6) and electric heater (11) respectively about desorption district sector (93), and desorption district sector (93) is connected to desorption fan (6) through desorption air play desorption district pipeline (19) one end, and first condenser (31) entry is connected to the other end, both sides are provided with clean gas respectively about cooling district sector (92) and advance cooling district pipeline (20) and clean gas play cooling district pipeline (2), and electric heater (11) are connected in clean gas play cooling district pipeline (2), and electric heater (11) advance desorption district pipeline (21) through desorption air and connect desorption district sector (93).
2. An energy-saving recovering device of NMP solvent according to claim 1, characterized in that: and a liquid blocking plate for preventing condensed NMP liquid from being brought into the honeycomb adsorption rotating wheel (9) is arranged in the box body (8).
3. An energy-saving recovering device of NMP solvent according to claim 2, characterized in that: a liquid outlet (4) is arranged on the side wall of the lower part of the box body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921436118.3U CN210613276U (en) | 2019-09-01 | 2019-09-01 | Energy-conserving recovery unit of NMP solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921436118.3U CN210613276U (en) | 2019-09-01 | 2019-09-01 | Energy-conserving recovery unit of NMP solvent |
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| Publication Number | Publication Date |
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| CN210613276U true CN210613276U (en) | 2020-05-26 |
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| CN201921436118.3U Active CN210613276U (en) | 2019-09-01 | 2019-09-01 | Energy-conserving recovery unit of NMP solvent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114288999A (en) * | 2021-12-27 | 2022-04-08 | 东莞市鹏锦机械科技有限公司 | Specific water-absorbing composite material, preparation method thereof and application thereof in treatment of waste gas with high moisture content and low NMP content |
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2019
- 2019-09-01 CN CN201921436118.3U patent/CN210613276U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114288999A (en) * | 2021-12-27 | 2022-04-08 | 东莞市鹏锦机械科技有限公司 | Specific water-absorbing composite material, preparation method thereof and application thereof in treatment of waste gas with high moisture content and low NMP content |
| CN114288999B (en) * | 2021-12-27 | 2024-06-07 | 东莞市鹏锦机械科技有限公司 | Specific water-absorbing composite material, preparation method thereof and application thereof in high-moisture low-NMP-content waste gas treatment |
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