CN220558898U - Heat pipe energy-saving ionic solution carbon trapping device - Google Patents
Heat pipe energy-saving ionic solution carbon trapping device Download PDFInfo
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- CN220558898U CN220558898U CN202420201876.1U CN202420201876U CN220558898U CN 220558898 U CN220558898 U CN 220558898U CN 202420201876 U CN202420201876 U CN 202420201876U CN 220558898 U CN220558898 U CN 220558898U
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- liquid
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- tower
- heat exchanger
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 171
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 101
- 238000010521 absorption reaction Methods 0.000 claims abstract description 85
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 51
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 51
- 230000008929 regeneration Effects 0.000 claims abstract description 44
- 238000011069 regeneration method Methods 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000002904 solvent Substances 0.000 claims description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 13
- 239000003546 flue gas Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- -1 amine carbon dioxide Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model belongs to the technical field of carbon trapping devices, and particularly relates to a heat pipe energy-saving ionic solution carbon trapping device. The utility model relates to a heat pipe energy-saving ionic solution carbon trapping device which comprises: the device comprises a carbon dioxide absorption tower, an absorption liquid regeneration tower, a heat pipe reboiler and a heat pipe heat exchanger, wherein the heat pipe reboiler is connected with the heat pipe heat exchanger, the carbon dioxide absorption tower, a lean-rich liquid heat exchanger and the heat pipe heat exchanger; the heat pipe reboiler is connected with the absorption liquid regeneration tower, the absorption liquid regeneration tower is connected with the tower top condenser, the tower top condenser is connected with the gas-liquid separation tank, and the gas-liquid separation tank is connected with the absorption liquid regeneration tower. According to the heat pipe energy-saving ionic solution carbon trapping device, the carbon dioxide absorption efficiency is improved through the heat pipe reboiler and the heat pipe heat exchanger, and energy conservation and consumption reduction are achieved.
Description
Technical Field
The utility model belongs to the technical field of carbon trapping devices, and particularly relates to a heat pipe energy-saving ionic solution carbon trapping device.
Background
The emission source of artificial carbon dioxide waste gas in the atmosphere is mainly energy production and fossil fuel combustion in transportation, and the harm brought by carbon dioxide to human is mainly represented as greenhouse effect, so that glaciers are melted and sea level rises. The greenhouse effect also affects the atmospheric circulation, so that the global water circulation is changed, and then the global precipitation distribution is changed, thus causing huge economic loss. However, carbon dioxide is also a carbon resource, and carbon dioxide with high concentration can be widely applied to various fields such as medical treatment, food, welding and the like.
At present, the main recovery process of carbon dioxide is an MEA process and a pressure swing adsorption process, wherein the MEA process is a chemical absorption method, and CO is utilized 2 Chemically reacting with a chemical absorbent to form a weakly bound intermediate compound, and then enriching the CO by changing the conditions 2 CO in the absorption liquid of (a) 2 And resolving and regenerating the absorbent. The typical chemical absorbent is Monoethanolamine (MEA), and the method has some defects that the popularization is limited, such as high energy consumption due to heating during solvent regeneration, high operation cost for the power industry, pollution to air, easy oxidative degradation, serious corrosion to equipment and the like. In addition, aiming at the working condition of adopting dry desulfurization, denitrification and dedusting, the flue gas temperature is high, and if the flue gas is directly conveyed to an MEA carbon dioxide absorption system or a pressure swing adsorption system by utilizing two processes of an MEA process and a pressure swing adsorption process, carbon dioxide trapping is not facilitated, and a large amount of energy is wasted.
CN217247889U discloses a multistage heat exchange device for diverting rich liquid absorbed by carbon dioxide, a lean-rich liquid heat exchanger, wherein the rich liquid inlet end of the lean-rich liquid heat exchanger is communicated with the liquid outlet end of an absorption tower; the top of the regeneration tower is communicated with the rich liquid outlet end of the lean and rich liquid heat exchanger; the reboiler is communicated with the lean-rich liquid mixing outlet of the regeneration tower, and the reboiler is communicated with the lean-rich liquid mixing inlet of the regeneration tower; the absorbent rich liquid is split by the absorption tower, and a two-stage split waste heat recovery mode is adopted. The top of the regeneration tower is directly connected with the rich liquid outlet end of the lean and rich liquid heat exchanger, the temperature of the rich liquid is low, separation of carbon dioxide is not facilitated, and the heat energy utilization rate is low.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides the heat pipe energy-saving ionic solution carbon capture device which is used for recycling heat of high-temperature flue gas twice through a heat pipe reboiler and a heat pipe heat exchanger and preheating and regenerating rich liquid, so that the aim of improving carbon dioxide absorption efficiency is fulfilled, and meanwhile, the regeneration energy consumption is saved.
The utility model relates to a heat pipe energy-saving ionic solution carbon trapping device which comprises: the device comprises a carbon dioxide absorption tower, an absorption liquid regeneration tower, a heat pipe reboiler and a heat pipe heat exchanger, wherein an outlet of a draught fan is connected with a hot side inlet of the heat pipe reboiler, a hot side outlet of the heat pipe reboiler is connected with a hot side inlet of the heat pipe heat exchanger, a hot side outlet of the heat pipe heat exchanger is connected with an air inlet of the carbon dioxide absorption tower, the bottom of the carbon dioxide absorption tower is connected with a cold side inlet of a lean-rich liquid heat exchanger, a cold side outlet of the lean-rich liquid heat exchanger is connected with a cold side inlet of the heat pipe heat exchanger, the cold side outlet of the heat pipe heat exchanger is connected with the absorption liquid regeneration tower, the bottom of the absorption liquid regeneration tower is connected with the lean-rich liquid heat exchanger, the lean-rich liquid heat exchanger is connected with a lean liquid condenser, the lean liquid condenser is connected with a solvent tank, the bottom outlet of the solvent tank is divided into two paths, one path is connected with the carbon dioxide absorption tower, the other path is connected with a lean liquid purification device, and the lean liquid purification device is connected with the solvent tank; the heat pipe reboiler is circularly connected with the lower part of the absorption liquid regeneration tower, the top of the absorption liquid regeneration tower is connected with the top condenser, the top condenser is connected with the gas-liquid separation tank, and the liquid outlet of the gas-liquid separation tank is connected with the absorption liquid regeneration tower.
Preferably, the bottom of the carbon dioxide absorption tower is connected with an inlet of a rich liquid pump, and an outlet of the rich liquid pump is connected with a cold side inlet of the lean-rich liquid heat exchanger.
Preferably, the bottom of the absorption liquid regeneration tower is connected with an inlet of a lean liquid pump, and an outlet of the lean liquid pump is connected with a lean-rich liquid heat exchanger.
Preferably, the bottom of the solvent tank is connected with an inlet of a lean solution feed pump, and an outlet of the lean solution feed pump is connected with the carbon dioxide absorption tower.
Preferably, the solvent tank is provided with a softening water pipe b and an absorption liquid pipe, and the absorption liquid pipe is provided with a solvent feeding pump.
Preferably, the liquid outlet of the gas-liquid separation tank is connected with a reflux pump, and the reflux pump is connected with the absorption liquid regeneration tower.
Preferably, the inlet of the induced draft fan is provided with a flue gas inlet pipe.
Preferably, the lean liquid purifying device is provided with a low pressure steam inlet pipe and a softened water pipe a.
Preferably, the carbon dioxide absorption tower is provided with an exhaust pipe.
Preferably, the gas-liquid separation tank is provided with CO 2 And (5) collecting pipes.
When the heat pipe energy-saving ionic solution carbon capture device disclosed by the utility model is in operation, flue gas enters a heat pipe reboiler through a flue gas inlet pipe through a draught fan, rich liquid at the bottom of an absorption liquid regeneration tower is heated, the flue gas enters a heat pipe heat exchanger to heat the rich liquid after being cooled, then enters a carbon dioxide absorption tower, is discharged out of the tower through an exhaust pipe after being absorbed by an organic amine absorption liquid, rich liquid generated by the carbon dioxide absorption tower enters a lean-rich liquid heat exchanger through a rich liquid pump to heat the liquid, carbon dioxide in the rich liquid is separated from the liquid after being heated again through the heat pipe heat exchanger, enters the absorption liquid regeneration tower, the regenerated lean liquid is conveyed to the lean-rich liquid heat exchanger to be cooled through a lean liquid pump, the solution entering the solvent tank is continuously conveyed to the carbon dioxide absorption tower through a lean liquid feed pump, the solution conveyed through the lean liquid feed pump can enter a lean liquid purification device to purify the lean liquid, and the purified solution is circulated to enter the solvent tank. The carbon dioxide generated by the absorption liquid regeneration tower is cooled by a tower top condenser and then enters a gas-liquid separation tank for gas-water separation, and purified pure carbon dioxide enters CO 2 And the collecting pipe is used for returning the solution separated by the gas-liquid separation tank to the absorption liquid regeneration tower through a reflux pump.
Compared with the prior art, the utility model has the following beneficial effects:
the heat pipe energy-saving ionic solution carbon trapping device is different from the traditional organic amine carbon dioxide absorbing device, and the lean-rich liquid heat exchanger, the heat pipe reboiler and the heat pipe heat exchanger are utilized to cooperate with the carbon dioxide absorbing tower and the absorbing liquid regenerating tower to recover the heat of the flue gas and simultaneously heat and regenerate the rich liquid, so that the purpose of energy-saving removal of carbon dioxide in the flue gas is achieved by preheating the rich liquid.
Drawings
Fig. 1 is a schematic diagram of a heat pipe energy-saving ionic solution carbon capture device of the utility model.
In the figure: 1. a carbon dioxide absorption tower; 2. an induced draft fan; 3. a rich liquid pump; 4. a lean rich liquid heat exchanger; 5. an absorption liquid regeneration tower; 6. a lean liquid pump; 7. a lean solution condenser; 8. a lean solution feed pump; 9. a solvent tank; 10. a solvent feed pump; 11. a lean solution purifying device; 12. a heat pipe reboiler; 13. a heat pipe heat exchanger; 14. a tower top condenser; 15. a gas-liquid separation tank; 16. a reflux pump; 17. an exhaust pipe; 18. a flue gas inlet pipe; 19. a low pressure steam inlet pipe; 20. a softening water pipe a; 21. a softening water pipe b; 22. an absorption liquid pipe; 23. CO 2 And (5) collecting pipes.
Detailed Description
The utility model will be further illustrated with reference to specific examples.
In the present utility model, the terms "connected," "connected," and "connected" are to be construed broadly in the chemical industry. The specific meaning of the above terms in the present utility model can be understood in a specific case by those of ordinary skill in the art.
In the utility model, the carbon dioxide absorption tower, the absorption liquid regeneration tower and the lean liquid purifying device are all existing commercial devices, the internal structure of the device is mature and is the prior art, and a person skilled in the art can make clear judgment, so that the internal structure of the device is not specifically discussed, in addition, the inlet and the outlet which appear in the description are all conventional arrangements in the structure and are the conventional structures which are well known to the person skilled in the art to be operable, and therefore, the structure of the device is not specifically marked.
As shown in fig. 1, the heat pipe energy-saving ionic solution carbon trapping device comprises: the device comprises a carbon dioxide absorption tower 1, an absorption liquid regeneration tower 5, a heat pipe reboiler 12 and a heat pipe heat exchanger 13, wherein an outlet of a draught fan 2 is connected with a hot side inlet of the heat pipe reboiler 12, a hot side outlet of the heat pipe reboiler 12 is connected with a hot side inlet of the heat pipe heat exchanger 13, a hot side outlet of the heat pipe heat exchanger 13 is connected with an air inlet of the carbon dioxide absorption tower 1, the bottom of the carbon dioxide absorption tower 1 is connected with a cold side inlet of a lean-rich liquid heat exchanger 4, a cold side outlet of the lean-rich liquid heat exchanger 4 is connected with a cold side inlet of the heat pipe heat exchanger 13, a cold side outlet of the heat pipe heat exchanger 13 is connected with the absorption liquid regeneration tower 5, the bottom of the absorption liquid regeneration tower 5 is connected with the lean-rich liquid heat exchanger 4, the lean-rich liquid heat exchanger 4 is connected with a lean liquid condenser 7, the lean liquid condenser 7 is connected with a solvent tank 9, and the bottom outlet of the solvent tank 9 is divided into two paths, one path is connected with the carbon dioxide absorption tower 1, the other path is connected with a lean liquid purification device 11, and the lean liquid purification device 11 is connected to the solvent tank 9; the heat pipe reboiler 12 is circularly connected with the lower part of the absorption liquid regeneration tower 5, the top of the absorption liquid regeneration tower 5 is connected with the tower top condenser 14, the tower top condenser 14 is connected with the gas-liquid separation tank 15, and the liquid outlet of the gas-liquid separation tank 15 is connected with the absorption liquid regeneration tower 5.
The bottom of the carbon dioxide absorption tower 1 is connected with an inlet of a rich liquid pump 3, and an outlet of the rich liquid pump 3 is connected with a cold side inlet of a lean-rich liquid heat exchanger 4.
The bottom of the absorption liquid regeneration tower 5 is connected with an inlet of a lean liquid pump 6, and an outlet of the lean liquid pump 6 is connected with the lean-rich liquid heat exchanger 4.
The bottom of the solvent tank 9 is connected with the inlet of the lean solution feed pump 8, and the outlet of the lean solution feed pump 8 is connected with the carbon dioxide absorption tower 1.
The solvent tank 9 is provided with a softening water pipe b21 and an absorption liquid pipe 22, and the absorption liquid pipe 22 is provided with a solvent feed pump 10.
The liquid outlet of the gas-liquid separation tank 15 is connected to a reflux pump 16, and the reflux pump 16 is connected to the absorption liquid regeneration tower 5.
The inlet of the induced draft fan 2 is provided with a flue gas inlet pipe 18.
The lean liquid purification apparatus 11 is provided with a low pressure steam inlet pipe 19 and a softened water pipe a20.
The carbon dioxide absorption tower 1 is provided with an exhaust pipe 17.
The gas-liquid separation tank 15 is provided with CO 2 And a collection tube 23.
The heat pipe energy-saving ionic solution carbon trapping device provided by the utility model has the advantages that when in operation, smoke passes through the smokeThe gas inlet pipe 18 is used for heating the rich liquid at the bottom of the absorption liquid regeneration tower 5 through the induced draft fan 2, heating the rich liquid in the heat pipe exchanger 13 after the flue gas is cooled, then heating the rich liquid in the carbon dioxide absorption tower 1, absorbing the rich liquid through the organic amine absorption liquid, discharging the rich liquid out of the tower through the exhaust pipe 17, heating the rich liquid generated by the carbon dioxide absorption tower 1 through the rich liquid pump 3, separating carbon dioxide in the rich liquid from the liquid after the rich liquid is heated again through the heat pipe exchanger 13, entering the absorption liquid regeneration tower 5, conveying the regenerated lean liquid to the lean and rich liquid heat exchanger 4 for cooling through the lean liquid pump 6, entering the solvent tank 9, continuously conveying the solution entering the solvent tank 9 into the carbon dioxide absorption tower 1 through the lean liquid feed pump 8, purifying the lean liquid through the lean liquid purification device 11, and circulating the purified solution into the solvent tank 9. The carbon dioxide generated by the absorption liquid regeneration tower 5 is cooled by a tower top condenser 14 and then enters a gas-liquid separation tank 15 for gas-water separation, and purified carbon dioxide enters CO 2 The collecting pipe 23 returns the solution separated in the gas-liquid separation tank 15 to the absorption liquid regeneration tower 5 through the reflux pump 16.
The heat pipe energy-saving ionic solution carbon trapping device can be applied to the industries of power plants, chemical engineering, cement, steel, coking and metallurgy.
Claims (10)
1. The utility model provides a heat pipe energy-saving ionic solution carbon entrapment device which characterized in that: the device comprises a carbon dioxide absorption tower (1), an absorption liquid regeneration tower (5), a heat pipe reboiler (12) and a heat pipe heat exchanger (13), wherein an outlet of a draught fan (2) is connected with a hot side inlet of the heat pipe reboiler (12), a hot side outlet of the heat pipe reboiler (12) is connected with a hot side inlet of the heat pipe heat exchanger (13), a hot side outlet of the heat pipe heat exchanger (13) is connected with an air inlet of the carbon dioxide absorption tower (1), the bottom of the carbon dioxide absorption tower (1) is connected with a cold side inlet of a lean-rich liquid heat exchanger (4), a cold side outlet of the lean-rich liquid heat exchanger (4) is connected with a cold side inlet of the heat pipe heat exchanger (13), a cold side outlet of the heat pipe heat exchanger (13) is connected with the absorption liquid regeneration tower (5), the bottom of the absorption liquid regeneration tower (5) is connected with the lean-rich liquid heat exchanger (4), the lean-rich liquid heat exchanger (4) is connected with a lean-liquid condenser (7), the lean-liquid condenser (7) is connected with a solvent tank (9), and the bottom outlet of the solvent tank (9) is divided into two paths, and one path is connected with the carbon dioxide absorption tower (1) and the other path is connected with a lean-liquid purification device (11); the heat pipe reboiler (12) is circularly connected with the lower part of the absorption liquid regeneration tower (5), the top of the absorption liquid regeneration tower (5) is connected with the tower top condenser (14), the tower top condenser (14) is connected with the gas-liquid separation tank (15), and the liquid outlet of the gas-liquid separation tank (15) is connected with the absorption liquid regeneration tower (5).
2. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: the bottom of the carbon dioxide absorption tower (1) is connected with the inlet of the rich liquid pump (3), and the outlet of the rich liquid pump (3) is connected with the cold side inlet of the lean and rich liquid heat exchanger (4).
3. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: the bottom of the absorption liquid regeneration tower (5) is connected with the inlet of the lean liquid pump (6), and the outlet of the lean liquid pump (6) is connected with the lean-rich liquid heat exchanger (4).
4. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: the bottom of the solvent tank (9) is connected with the inlet of the lean solution feed pump (8), and the outlet of the lean solution feed pump (8) is connected with the carbon dioxide absorption tower (1).
5. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: the solvent tank (9) is provided with a softening water pipe b (21) and an absorption liquid pipe (22), and the absorption liquid pipe (22) is provided with a solvent feeding pump (10).
6. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: the liquid outlet of the gas-liquid separation tank (15) is connected with a reflux pump (16), and the reflux pump (16) is connected with the absorption liquid regeneration tower (5).
7. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: the inlet of the induced draft fan (2) is provided with a flue gas inlet pipe (18).
8. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: the lean liquid purifying device (11) is provided with a low-pressure steam inlet pipe (19) and a softened water pipe a (20).
9. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: an exhaust pipe (17) is arranged on the carbon dioxide absorption tower (1).
10. The heat pipe energy-saving ionic solution carbon capture device of claim 1, wherein: CO is arranged on the gas-liquid separation tank (15) 2 And a collection pipe (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420201876.1U CN220558898U (en) | 2024-01-29 | 2024-01-29 | Heat pipe energy-saving ionic solution carbon trapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420201876.1U CN220558898U (en) | 2024-01-29 | 2024-01-29 | Heat pipe energy-saving ionic solution carbon trapping device |
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| Publication Number | Publication Date |
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| CN220558898U true CN220558898U (en) | 2024-03-08 |
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| CN202420201876.1U Active CN220558898U (en) | 2024-01-29 | 2024-01-29 | Heat pipe energy-saving ionic solution carbon trapping device |
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| CN (1) | CN220558898U (en) |
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- 2024-01-29 CN CN202420201876.1U patent/CN220558898U/en active Active
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