CN210057814U - Device for recycling waste heat of high-temperature air solvent containing NMP solvent - Google Patents
Device for recycling waste heat of high-temperature air solvent containing NMP solvent Download PDFInfo
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- CN210057814U CN210057814U CN201920447652.8U CN201920447652U CN210057814U CN 210057814 U CN210057814 U CN 210057814U CN 201920447652 U CN201920447652 U CN 201920447652U CN 210057814 U CN210057814 U CN 210057814U
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Abstract
Device to the high temperature air solvent recovery waste heat utilization who contains the NMP solvent, including first box and second box, its characterized in that: the first tank comprises an upper tank chamber and a lower tank chamber, a heat exchanger is vertically arranged on one side in the first tank, the upper part of the heat exchanger extends into the upper tank chamber, and the lower part of the heat exchanger extends into the lower tank chamber. The utility model is mainly used for treating the high-temperature air containing high-concentration NMP solvent discharged in the coating production process of the lithium ion battery, and effectively recycling the NMP solvent in the air by utilizing the condenser and the honeycomb adsorption runner; after high-temperature air containing NMP solvent is treated, purified air meeting the national emission standard is discharged into the atmosphere; meanwhile, waste heat recovery is carried out on high-temperature air exhausted by the coating machine, and the energy utilization efficiency is improved.
Description
Technical Field
The utility model relates to a waste gas recovery technical field especially relates to a device to the high temperature air solvent recovery waste heat utilization who contains the 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 NMP solvent is colorless transparent oily liquid, has slight amine smell, can be mutually dissolved with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon and castor oil, has low volatility, good thermal stability and chemical stability, can volatilize along with water vapor, has hygroscopicity, is photosensitive and has half lethal dose (rat, oral) of 3.8 mg/kg. Therefore, solvent recovery and heat recovery are required for the NMP solvent-containing high-temperature air discharged from the coating process of the lithium ion battery, so that the exhaust gas is purified and then discharged up to the standard.
Disclosure of Invention
The utility model provides a device for recycling waste heat of a high-temperature air solvent containing an NMP solvent, which is mainly used for treating the high-temperature air containing the high-concentration NMP solvent discharged in the coating production process of a lithium ion battery and effectively recycling the NMP solvent in the air by utilizing a condenser and a honeycomb adsorption rotating wheel; after high-temperature air containing NMP solvent is treated, purified air meeting the national emission standard is discharged into the atmosphere; meanwhile, waste heat recovery is carried out on high-temperature air exhausted by the coating machine, and the energy utilization efficiency is improved.
The technical scheme of the utility model is that: device to the high temperature air solvent recovery waste heat utilization who contains the NMP solvent, including first box and second box, its characterized in that: the first box body comprises an upper box chamber and a lower box chamber, one side in the first box body is provided with a heat exchanger which is vertically arranged, the upper part of the heat exchanger extends into the upper box chamber, the lower part of the heat exchanger extends into the lower box chamber, the lower box chamber is internally provided with a cooling water condenser, a freezing water condenser and a liquid blocking plate in sequence along the direction of air flow, a honeycomb adsorption rotating wheel is arranged in the second box body and comprises an adsorption area, a desorption area and a cooling area, the left side and the right side of the adsorption area are respectively provided with an organic solvent adsorption area pipeline and a clean air pipeline, one end of an air outlet of the lower box chamber is connected with a blower, an air outlet of the blower is respectively connected with the upper box chamber pipeline and the organic solvent adsorption area pipeline through air supply pipes, and an outlet of the clean air pipeline is respectively connected with a discharge pipeline and a low-temperature clean air cooling area pipeline, the desorption area is provided with a desorption fan and an electric heater on the left side and the right side respectively, the desorption fan is connected with the desorption area through desorption air outlet desorption area pipeline one end, the other end is connected with a cooling water condenser inlet, the cooling area is provided with a low-temperature clean air inlet cooling area pipeline and a high-temperature clean air outlet cooling area pipeline on the left side and the right side respectively, the high-temperature clean air outlet cooling area pipeline is connected with the electric heater, and the electric heater is connected with the desorption area through desorption air inlet desorption area pipeline.
Furthermore, a driving speed reducer is fixed on the side wall of the lower portion of the second box body, and the output end of the driving speed reducer is in transmission connection with the honeycomb adsorption rotating wheel through a transmission shaft and a transmission chain.
Furthermore, a liquid outlet for discharging condensate is formed in the side wall of the lower box chamber.
The utility model has the advantages that: the utility model provides a device for recycling waste heat of a high-temperature air solvent containing an NMP solvent, which is mainly used for treating the high-temperature air containing the high-concentration NMP solvent discharged in the coating production process of a lithium ion battery and effectively recycling the NMP solvent in the air by utilizing a condenser and a honeycomb adsorption rotating wheel; after high-temperature air containing NMP solvent is treated, purified air meeting the national emission standard is discharged into the atmosphere; meanwhile, waste heat recovery is carried out on high-temperature air exhausted by the coating machine, and the energy utilization efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In fig. 1: 1-a heat exchanger, 2-a cooling water condenser, 3-a freezing water condenser, 4-a liquid blocking plate, 5-a blower, 6-a first box body, 61-an upper box chamber, 62-a lower box chamber, 7-a second box body, 8-a honeycomb adsorption rotating wheel, 81-an adsorption area, 82-a cooling area, 83-a desorption area, 9-a transmission chain, 10-a discharge fan, 11-a desorption fan, 12-an electric heater, 13-a transmission shaft, 14-a driving speed reducer, 15-an air supply pipe, 16-an upper box chamber pipeline, 17-an organic solvent inlet adsorption area pipeline, 18-a clean air pipeline, 19-a discharge pipeline, 20-a low-temperature clean air inlet cooling area pipeline, 21-a high-temperature clean air outlet cooling area pipeline, 22-a desorption air inlet cooling area pipeline, 23-desorption air outlet desorption area pipeline and 24-liquid outlet.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the utility model relates to a device to containing NMP solvent's high temperature air solvent recovery waste heat utilization, including first box 6 and second box 7, its characterized in that: the first box body 6 comprises an upper box chamber 61 and a lower box chamber 62, a heat exchanger 1 vertically arranged is arranged on one side in the first box body 6, the upper part of the heat exchanger 1 extends into the upper box chamber 61, the lower part of the heat exchanger 1 extends into the lower box chamber 62, a cooling water condenser 2, a chilled water condenser 3 and a liquid blocking plate 4 are sequentially arranged in the lower box chamber 62 along the direction of air flow, a honeycomb adsorption rotating wheel 8 is arranged in the second box body 7, the honeycomb adsorption rotating wheel 8 comprises an adsorption area 81, a desorption area 83 and a cooling area 82, an organic solvent adsorption area inlet pipeline 17 and an organic solvent purification pipeline 18 are respectively arranged on the left side and the right side of the adsorption area 81, one end of an air flow outlet of the lower box chamber 62 is connected with a blower 5, and an air outlet of the blower 5 is respectively connected with the upper box chamber inlet pipeline 16 and the organic solvent adsorption area inlet pipeline 17 through an air flow pipe 15, the outlet of the clean gas pipeline 18 is respectively connected with a discharge pipeline 19 and a low-temperature clean gas inlet cooling area pipeline 20, the discharge pipeline 19 is connected with a discharge fan 10, the left side and the right side of the desorption area 83 are respectively provided with a desorption fan 11 and an electric heater 12, one end of the desorption fan 11 is connected with the desorption area 83 through a desorption air outlet desorption area pipeline 23, the other end of the desorption fan is connected with the inlet of a cooling water condenser 2, the left side and the right side of the cooling area 82 are respectively provided with a low-temperature clean gas inlet cooling area pipeline 20 and a high-temperature clean gas outlet cooling area pipeline 21, the high-temperature clean gas outlet cooling area pipeline 21 is connected with the electric heater 12, and the electric heater 12 is connected with the.
A driving speed reducer 14 is fixed on the side wall of the lower part of the second box body 7, and the output end of the driving speed reducer 14 is in transmission connection with the honeycomb adsorption rotating wheel 8 through a transmission shaft 13 and a transmission chain 9.
A liquid outlet 24 for discharging condensate is formed in the side wall of the lower tank chamber 62.
The utility model discloses a theory of operation:
high-temperature air containing a high-concentration NMP solvent from a coating machine passes through a heat exchanger 1, the high-temperature air and the condensed low-temperature air are subjected to cooling and heat exchange, the temperature of the air entering a cooling water condenser 2 is reduced, the temperature of the condensed low-temperature air entering the coating machine is increased, and the effects of heat recovery and energy conservation are achieved;
the high-temperature air containing the high-concentration NMP solvent and passing through the heat exchanger 1 sequentially passes through the cooling water condenser 2, the chilled water condenser 3 and the liquid blocking plate 4, the cooling water condenser 2 is used for absorbing the heat of the air, meanwhile, a small part of high-concentration NMP gas is condensed into liquid for recycling, and the condensing medium adopts cooling water to achieve the purpose of energy conservation; the waste heat of air is deeply absorbed by the chilled water condenser 3, and meanwhile, most of high-concentration NMP gas is condensed into liquid for recycling; the liquid blocking plate 4 is used for preventing the condensed NMP liquid from being brought into the rear-section blower 5;
because a small part of external air is sucked in when the coating machine works, the blower 5 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. In addition, a small part of the outside air sucked by the coating machine during working is sent to the honeycomb adsorption rotating wheel 8 for advanced treatment;
honeycomb adsorbs runner 8 and falls into adsorption zone 81, desorption district 83 and cooling space 82, drive chain 9 by drive reducer 14 and make honeycomb adsorb the slow rotation of runner 8, adsorb runner 8 when rotating to adsorption zone 81 as the honeycomb, carry out effectual absorption to the air that contains trace NMP solvent that gets into adsorption zone 81, along with honeycomb adsorbs runner 8's rotation, when adsorption zone 81 gyration to desorption district 83, come out the effectual desorption of adsorbed NMP solvent, gyration to cooling space 82 after the desorption and carry out air cooling to honeycomb adsorption runner 8, gyration adsorption zone 81 again after the cooling adsorbs the NMP solvent, work of going back and forth like this, NMP solvent in the messenger's air obtains effectual processing recovery.
Blowing the mixed air to an adsorption area 81 through an organic solvent inlet pipeline 17, and discharging the purified air which is processed by the honeycomb adsorption rotating wheel 8 and reaches the national emission standard into the atmosphere through a discharge pipeline 19 and a discharge fan 10 by the air passing through the adsorption area 81;
the clean air that reaches national emission standard after entering cooling zone pipeline 20 through low temperature net gas and adsorbing 8 processing of runner sends to cooling zone 82, the clean gas of rethread high temperature goes out cooling zone pipeline 21 and sends to electric heater 12, electric heater 12 heats the air, then blow to desorption district 83, make honeycomb adsorb the desorption of the NMP solvent of runner 8 and come out, go out desorption district pipeline 23 through the desorption air and get into desorption fan 11, desorption fan 11 sends back the air of the high concentration NMP solvent that honeycomb adsorbs runner 8 through desorption to cooling water condenser 2, chilled water condenser 3, liquid after the condensation obtains retrieving simultaneously.
Claims (3)
1. Device to containing NMP solvent's high temperature air solvent recovery waste heat utilization, including first box (6) and second box (7), its characterized in that: the first box body (6) comprises an upper box chamber (61) and a lower box chamber (62), a heat exchanger (1) which is vertically arranged is arranged on one side in the first box body (6), the upper part of the heat exchanger (1) extends into the upper box chamber (61), the lower part of the heat exchanger (1) extends into the lower box chamber (62), a cooling water condenser (2), a chilled water condenser (3) and a liquid blocking plate (4) are sequentially arranged in the lower box chamber (62) along the direction of air flow, a honeycomb adsorption rotating wheel (8) is arranged in the second box body (7), the honeycomb adsorption rotating wheel (8) comprises an adsorption area (81), a desorption area (83) and a cooling area (82), organic solvent inlet adsorption area pipelines (17) and air purification pipelines (18) are respectively arranged on the left side and the right side of the adsorption area (81), and one end of an air flow outlet of the lower box chamber (62) is connected with a blower (5), the air outlet of the blower (5) is respectively connected with an upper box chamber pipeline (16) and an organic solvent adsorption area pipeline (17) through an air supply pipe (15), the outlet of a clean air pipeline (18) is respectively connected with a discharge pipeline (19) and a low-temperature clean air cooling area pipeline (20), the discharge pipeline (19) is connected with a discharge fan (10), the left side and the right side of the desorption area (83) are respectively provided with a desorption fan (11) and an electric heater (12), one end of the desorption fan (11) is connected with the desorption area (83) through a desorption air outlet desorption area pipeline (23), the other end is connected with an inlet of a cooling water condenser (2), the left side and the right side of the cooling area (82) are respectively provided with a low-temperature clean gas inlet cooling area pipeline (20) and a high-temperature clean gas outlet cooling area pipeline (21), the high-temperature clean gas outlet cooling area pipeline (21) is connected with an electric heater (12), and the electric heater (12) is connected with a desorption area (83) through a desorption air inlet desorption area pipeline (22).
2. The apparatus for recovering and utilizing waste heat of a high-temperature air solvent containing an NMP solvent according to claim 1, characterized in that: and a driving speed reducer (14) is fixed on the side wall of the lower part of the second box body (7), and the output end of the driving speed reducer (14) is in transmission connection with the honeycomb adsorption rotating wheel (8) through a transmission shaft (13) and a transmission chain (9).
3. The apparatus for recovering and utilizing waste heat of a high-temperature air solvent containing an NMP solvent according to claim 1, characterized in that: and a liquid outlet (24) for discharging condensate is formed in the side wall of the lower box chamber (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920447652.8U CN210057814U (en) | 2019-04-02 | 2019-04-02 | Device for recycling waste heat of high-temperature air solvent containing NMP solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920447652.8U CN210057814U (en) | 2019-04-02 | 2019-04-02 | Device for recycling waste heat of high-temperature air solvent containing NMP solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210057814U true CN210057814U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920447652.8U Active CN210057814U (en) | 2019-04-02 | 2019-04-02 | Device for recycling waste heat of high-temperature air solvent containing NMP solvent |
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| CN (1) | CN210057814U (en) |
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2019
- 2019-04-02 CN CN201920447652.8U patent/CN210057814U/en active Active
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