CN211328206U - NMP waste gas recovery system - Google Patents
NMP waste gas recovery system Download PDFInfo
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- CN211328206U CN211328206U CN201921312563.9U CN201921312563U CN211328206U CN 211328206 U CN211328206 U CN 211328206U CN 201921312563 U CN201921312563 U CN 201921312563U CN 211328206 U CN211328206 U CN 211328206U
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Abstract
An NMP waste gas recovery system comprises a heat exchange tank body, an air inlet pipe and a recovery tower, wherein a vent is formed in the bottom of the heat exchange tank body, an exhaust fan is arranged at the vent, a hot air pipeline is arranged at the top of the heat exchange tank body, the other end of the hot air pipeline is connected with production equipment, a plurality of heat dissipation copper sheets are arranged on the side wall of an inner cavity of the heat exchange tank body, a cooling coil is arranged in the center of the inner cavity of the heat exchange tank body and spirally wound, a waste gas pipeline is arranged at the lower end of the heat exchange tank body, one end of the waste gas pipeline enters the inner cavity of the heat exchange tank body and is connected with the cooling coil, the other end of the waste gas pipeline is connected with the production equipment, an exhaust fan is arranged on the waste gas pipeline, NMP gas generated in the production equipment is pumped into the cooling, the high-temperature gas is conveyed back to the production equipment for secondary utilization through the hot air pipeline under the blowing of the exhaust fan.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection equipment, concretely relates to NMP waste gas recovery system.
Background
N-methylpyrrolidone, a chinese alias: NMP; 1-methyl-2-pyrrolidone; n-methyl-2-pyrrolidone. Colorless transparent oily liquid, slightly having amine odor. Low volatility, good thermal stability and chemical stability, and can be volatilized with water vapor. N-methyl pyrrolidone is widely applied to the industries of lithium batteries, medicines, pesticides, pigments, cleaning agents, insulating materials and the like. NMP gas contains components causing human infertility and cannot be directly discharged into the atmosphere, so the NMP gas generated in the production of production equipment can be discharged after being subjected to waste gas treatment. NMP waste gas temperature is higher when producing, need earlier carry out cooling to high-temperature gas with condensation recovery machine during general exhaust-gas treatment, so not only wasted the heat energy in the waste gas, the cooling water that uses in the cooling process moreover, the refrigerated water also need consume certain cost.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model discloses a NMP waste gas recovery system.
The specific technical scheme is as follows:
an NMP waste gas recovery system comprises a heat exchange tank body, an air inlet pipe and a recovery tower, wherein the bottom of the heat exchange tank body is provided with a vent, an exhaust fan is arranged at the vent, a hot air pipeline is connected and arranged at the top of the heat exchange tank body, the other end of the hot air pipeline is connected with production equipment, a plurality of heat dissipation copper sheets are uniformly arranged on the side wall of the inner cavity of the heat exchange tank body, and the center of the inner cavity of the heat exchange tank body is provided with a cooling coil which is spirally coiled from bottom to top, one side of the lower end of the heat exchange tank body is connected with a waste gas pipeline, one end of the waste gas pipeline enters the inner cavity of the heat exchange tank body and is connected with a pipe orifice at the lower end of the cooling coil pipe, the other end of the waste gas pipeline is connected with production equipment, an exhaust fan is arranged on the waste gas pipeline, and the NMP gas generated in the production equipment is pumped into the cooling coil pipe in the heat exchange tank body through the waste gas pipeline by the exhaust fan; one end of the air inlet pipe penetrates through the side wall of the upper end of the heat exchange tank body and is connected with the pipe orifice of the upper end of the cooling coil, and the other end of the air inlet pipe penetrates through the side wall of the lower end of the recovery tower and enters the inner cavity of the recovery tower;
a waste water discharge pipe is arranged on one side of the lower end of the recovery tower, a gas discharge pipe opening is arranged at the top end of the recovery tower, a liquid storage tank, a spray assembly, a filling material layer and a demisting layer are arranged in the recovery tower, and the liquid storage tank is arranged at the bottom end of an inner cavity of the recovery tower; the spray assembly comprises a circulating pipeline, a liquid storage tank, a water pump, a water delivery pipe, a first spray pipe and a second spray pipe, one end of the circulating pipeline is positioned in the liquid storage tank, the other end of the circulating pipeline penetrates through the side wall of the recovery tower and is connected with the liquid storage tank at the outer side of the recovery tower, a liquid supplementing pipeline is arranged at one side of the upper end of the liquid storage tank, the other end of the liquid supplementing pipeline is connected with a tap water pipeline, the water pump is arranged at the top of the water tank, the input end of the water pump is communicated with the inside of the liquid storage tank through a pipeline, the output end of the water pump is connected with the water delivery pipe, one end of the water delivery pipe is respectively connected with the first spray pipe and the second spray pipe, one ends of the first spray pipe and the second spray pipe penetrate through the side wall of the recovery tower and are annularly arranged in the recovery tower, the second spray pipe is positioned above the first spray pipe, waste gas in the recovery tower is absorbed by the water body through the spray head, so that NMP in the waste gas is absorbed by the water body; the packing bed of material sets up between first shower and second shower, and waste gas makes the NMP in the waste gas mix the water fast thoughtlessly to the water through the packing bed of material, the defogging layer sets up in the top of second shower, gets rid of water smoke in to the gas through the defogging layer for the water smoke that contains in the combustion gas reaches the minimum.
Furthermore, a heat insulation layer is arranged in the inner wall of the heat exchange tank body.
Further, a plurality of fixing supports are fixedly arranged on the inner wall of the heat exchange tank body, and the fixing supports are used for fixing the cooling coil.
Furthermore, a metal filter screen is arranged at the lower end of the exhaust fan at the vent.
Furthermore, a filter is arranged at the pipe orifice of the circulating pipeline in the liquid storage tank.
Furthermore, the spray head on the first spray pipe is a spiral nozzle, and the spray head on the second spray pipe is an atomization spray head.
Furthermore, the defogging layer comprises a silk screen defogging layer and a baffle defogging layer, and the baffle defogging layer is arranged above the silk screen defogging layer.
The utility model has the advantages that:
(1) the utility model discloses in carry out the heat absorption cooling through the heat transfer jar body with waste gas in the exhaust gas line under the cooperation of cooling coil and heat dissipation copper sheet for waste gas obtains cooling among the cooling coil, and cooling coil conducts the heat to on the heat dissipation copper sheet simultaneously, at last through the blowing of exhaust fan down, carry out reutilization in the production facility again through hot-blast main with the internal high-temperature gas of heat transfer jar, effectively reduced the consumption of the energy, thereby reduced manufacturing cost.
(2) The utility model discloses spray assembly in the recovery tower passes through the water pump and carries the water in the liquid reserve tank to first shower and second shower in, and the rethread shower nozzle sprays waste gas to fall into the liquid reserve tank, last circulating line filters the impurity of liquid reserve tank aquatic under the effect of filter, and carries water to the liquid reserve tank in, thereby reaches recycling, has reduced the consumption of water resource, thereby can reduce the waste gas recovery cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a longitudinal sectional view of the heat exchange tank of the present invention.
Description of the reference numerals
The device comprises production equipment 1, a heat exchange tank body 2, a vent 21, a metal filter screen 211, an exhaust fan 22, a waste gas pipeline 23, an exhaust fan 231, a heat dissipation copper sheet 24, a cooling coil 25, a fixing support 251, a hot air pipeline 26, a heat insulation layer 27, an air inlet pipe 3, a recovery tower 4, a liquid storage tank 41, a spray assembly 42, a circulating pipeline 421, a filter 4211, a liquid storage tank 422, a liquid supplementing pipeline 4221, a water pump 423, a water pipe 424, a first spray pipe 425, a spiral nozzle 4251, a second spray pipe 426, an atomization spray head 4261, a filler layer 43, a demisting layer 44, a silk screen demisting layer 441, a baffle demisting layer 442, a waste water discharge pipe 45 and a gas discharge pipe orifice.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection is all can.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
An NMP waste gas recovery system comprises a heat exchange tank body, an air inlet pipe and a recovery tower, wherein the bottom of the heat exchange tank body is provided with a vent, an exhaust fan is arranged at the vent, a hot air pipeline is connected and arranged at the top of the heat exchange tank body, the other end of the hot air pipeline is connected with production equipment, a plurality of heat dissipation copper sheets are uniformly arranged on the side wall of the inner cavity of the heat exchange tank body, and the center of the inner cavity of the heat exchange tank body is provided with a cooling coil which is spirally coiled from bottom to top, one side of the lower end of the heat exchange tank body is connected with a waste gas pipeline, one end of the waste gas pipeline enters the inner cavity of the heat exchange tank body and is connected with a pipe orifice at the lower end of the cooling coil pipe, the other end of the waste gas pipeline is connected with production equipment, an exhaust fan is arranged on the waste gas pipeline, and the NMP gas generated in the production equipment is pumped into the cooling coil pipe in the heat exchange tank body through the waste gas pipeline by the exhaust fan; one end of the air inlet pipe penetrates through the side wall of the upper end of the heat exchange tank body and is connected with the pipe orifice of the upper end of the cooling coil, and the other end of the air inlet pipe penetrates through the side wall of the lower end of the recovery tower and enters the inner cavity of the recovery tower;
a waste water discharge pipe is arranged on one side of the lower end of the recovery tower, a gas discharge pipe opening is arranged at the top end of the recovery tower, a liquid storage tank, a spray assembly, a filling material layer and a demisting layer are arranged in the recovery tower, and the liquid storage tank is arranged at the bottom end of an inner cavity of the recovery tower; the spray assembly comprises a circulating pipeline, a liquid storage tank, a water pump, a water delivery pipe, a first spray pipe and a second spray pipe, one end of the circulating pipeline is positioned in the liquid storage tank, the other end of the circulating pipeline penetrates through the side wall of the recovery tower and is connected with the liquid storage tank at the outer side of the recovery tower, a liquid supplementing pipeline is arranged at one side of the upper end of the liquid storage tank, the other end of the liquid supplementing pipeline is connected with a tap water pipeline, the water pump is arranged at the top of the water tank, the input end of the water pump is communicated with the inside of the liquid storage tank through a pipeline, the output end of the water pump is connected with the water delivery pipe, one end of the water delivery pipe is respectively connected with the first spray pipe and the second spray pipe, one ends of the first spray pipe and the second spray pipe penetrate through the side wall of the recovery tower and are annularly arranged in the recovery tower, the second spray pipe is positioned above the first spray pipe, waste gas in the recovery tower is absorbed by the water body through the spray head, so that NMP in the waste gas is absorbed by the water body; the packing bed of material sets up between first shower and second shower, and waste gas makes the NMP in the waste gas mix the water fast thoughtlessly to the water through the packing bed of material, the defogging layer sets up in the top of second shower, gets rid of water smoke in to the gas through the defogging layer for the water smoke that contains in the combustion gas reaches the minimum.
Furthermore, a heat insulation layer is arranged in the inner wall of the heat exchange tank body.
Further, a plurality of fixing supports are fixedly arranged on the inner wall of the heat exchange tank body, and the fixing supports are used for fixing the cooling coil.
Furthermore, a metal filter screen is arranged at the lower end of the exhaust fan at the vent.
Furthermore, a filter is arranged at the pipe orifice of the circulating pipeline in the liquid storage tank.
Furthermore, the spray head on the first spray pipe is a spiral nozzle, and the spray head on the second spray pipe is an atomization spray head.
Furthermore, the defogging layer comprises a silk screen defogging layer and a baffle defogging layer, and the baffle defogging layer is arranged above the silk screen defogging layer.
The working principle is as follows:
the waste gas pipeline is conveyed to the cooling coil pipe in the heat exchange tank body through the exhaust fan to convey high-temperature waste gas generated in the production equipment to the cooling coil pipe through the cooling coil pipe and absorb heat of the heat dissipation copper sheet, so that heat energy in the waste gas is transferred to the cooling coil pipe and the heat dissipation copper sheet, and hot air flow in the heat exchange tank body is conveyed back to the production equipment through the hot air pipeline through the exhaust fan.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. An NMP waste gas recovery system is characterized by comprising a heat exchange tank body, an air inlet pipe and a recovery tower, wherein a vent is formed in the bottom of the heat exchange tank body, an exhaust fan is arranged at the vent, a hot air pipeline is connected to the top of the heat exchange tank body, the other end of the hot air pipeline is connected with production equipment, a plurality of heat dissipation copper sheets are uniformly arranged on the side wall of an inner cavity of the heat exchange tank body, a cooling coil is arranged in the center of the inner cavity of the heat exchange tank body, the cooling coil is spirally wound from bottom to top, a waste gas pipeline is connected to one side of the lower end of the heat exchange tank body, one end of the waste gas pipeline enters the inner cavity of the heat exchange tank body and is connected with a lower end pipe orifice of the cooling; one end of the air inlet pipe penetrates through the side wall of the upper end of the heat exchange tank body and is connected with the pipe orifice of the upper end of the cooling coil, and the other end of the air inlet pipe penetrates through the side wall of the lower end of the recovery tower and enters the inner cavity of the recovery tower; a waste water discharge pipe is arranged on one side of the lower end of the recovery tower, a gas discharge pipe opening is arranged at the top end of the recovery tower, a liquid storage tank, a spray assembly, a filling material layer and a demisting layer are arranged in the recovery tower, and the liquid storage tank is arranged at the bottom end of an inner cavity of the recovery tower; the spray assembly comprises a circulating pipeline, a liquid storage tank, a water pump, a water delivery pipe, a first spray pipe and a second spray pipe, one end of the circulating pipeline is positioned in the liquid storage tank, the other end of the circulating pipeline penetrates through the side wall of the recovery tower and is connected with the liquid storage tank at the outer side of the recovery tower, a liquid supplementing pipeline is arranged at one side of the upper end of the liquid storage tank, the other end of the liquid supplementing pipeline is connected with a tap water pipeline, the water pump is arranged at the top of the water tank, the input end of the water pump is communicated with the inside of the liquid storage tank through a pipeline, the output end of the water pump is connected with the water delivery pipe, one end of the water delivery pipe is respectively connected with the first spray pipe and the second spray pipe, one ends of the first spray pipe and the second spray pipe penetrate through the side wall of the recovery tower and are annularly arranged in the recovery tower, the second spray pipe is positioned above the first spray pipe, waste gas in the recovery tower is absorbed by the water body through the spray head, so that NMP in the waste gas is absorbed by the water body; the filling material layer is arranged between the first spray pipe and the second spray pipe, and the defogging layer is arranged above the second spray pipe.
2. The NMP waste gas recovery system of claim 1, wherein the heat exchange tank has a thermal insulation layer on its inner wall.
3. The NMP waste gas recovery system of claim 1, wherein a plurality of fixing brackets are fixedly arranged on the inner wall of the heat exchange tank body, and the fixing brackets fix the cooling coil.
4. The NMP waste gas recovery system of claim 1, wherein the vent is provided with a metal filter at the lower end of the exhaust fan.
5. The NMP offgas recovery system of claim 1, wherein a filter is provided at the opening of the circulation duct in the reservoir.
6. The NMP waste gas recovery system of claim 1, wherein the spray heads on the first spray pipe are spiral spray nozzles, and the spray heads on the second spray pipe are atomization spray heads.
7. The NMP exhaust gas recovery system of claim 1, wherein the demister layer comprises a wire mesh demister layer and a baffle demister layer, and the baffle demister layer is disposed above the wire mesh demister layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312563.9U CN211328206U (en) | 2019-08-14 | 2019-08-14 | NMP waste gas recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312563.9U CN211328206U (en) | 2019-08-14 | 2019-08-14 | NMP waste gas recovery system |
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| Publication Number | Publication Date |
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| CN211328206U true CN211328206U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921312563.9U Active CN211328206U (en) | 2019-08-14 | 2019-08-14 | NMP waste gas recovery system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370953A (en) * | 2020-10-26 | 2021-02-19 | 张家港市金秋环保科技有限公司 | Cooling external waste gas treatment system and method |
| CN112452132A (en) * | 2020-11-25 | 2021-03-09 | 上海崇贯企业管理有限公司 | Temperature-controllable waste gas treatment filter tower |
| CN112546821A (en) * | 2020-11-03 | 2021-03-26 | 蒋昊昀 | Continuous converting in-process sulphur recovery unit of copper matte |
| CN114870575A (en) * | 2022-04-20 | 2022-08-09 | 镇江新纳环保材料有限公司 | NMP recycling system applied to battery slurry |
| CN114917695A (en) * | 2022-03-29 | 2022-08-19 | 镇江新纳环保材料有限公司 | NMP recycling and purifying system applied to preparation of conductive paste |
-
2019
- 2019-08-14 CN CN201921312563.9U patent/CN211328206U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370953A (en) * | 2020-10-26 | 2021-02-19 | 张家港市金秋环保科技有限公司 | Cooling external waste gas treatment system and method |
| CN112546821A (en) * | 2020-11-03 | 2021-03-26 | 蒋昊昀 | Continuous converting in-process sulphur recovery unit of copper matte |
| CN112452132A (en) * | 2020-11-25 | 2021-03-09 | 上海崇贯企业管理有限公司 | Temperature-controllable waste gas treatment filter tower |
| CN112452132B (en) * | 2020-11-25 | 2022-11-11 | 湖北灏瑞达环保能源科技有限公司 | Temperature-controllable waste gas treatment filter tower |
| CN114917695A (en) * | 2022-03-29 | 2022-08-19 | 镇江新纳环保材料有限公司 | NMP recycling and purifying system applied to preparation of conductive paste |
| CN114917695B (en) * | 2022-03-29 | 2023-07-21 | 镇江新纳环保材料有限公司 | NMP recycling and purifying system applied to preparation of conductive slurry |
| CN114870575A (en) * | 2022-04-20 | 2022-08-09 | 镇江新纳环保材料有限公司 | NMP recycling system applied to battery slurry |
| CN114870575B (en) * | 2022-04-20 | 2023-08-29 | 镇江新纳环保材料有限公司 | NMP recycling system applied to battery slurry |
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