CN220276621U - Carbon dioxide trapping device based on solid polyethylenimine adsorption - Google Patents
Carbon dioxide trapping device based on solid polyethylenimine adsorption Download PDFInfo
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- CN220276621U CN220276621U CN202321289116.2U CN202321289116U CN220276621U CN 220276621 U CN220276621 U CN 220276621U CN 202321289116 U CN202321289116 U CN 202321289116U CN 220276621 U CN220276621 U CN 220276621U
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- carbon dioxide
- adsorption
- polyethylenimine
- sealing valve
- solid
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 282
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 141
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 141
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 50
- 239000007787 solid Substances 0.000 title claims abstract description 41
- 229920002873 Polyethylenimine Polymers 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 150000001412 amines Chemical class 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 238000003795 desorption Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000007605 air drying Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 230000004083 survival effect Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 125000005910 alkyl carbonate group Chemical group 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a carbon dioxide trapping device based on solid polyethylenimine adsorption, which comprises a trapping pipe, a carbon dioxide gas collecting tank, a sucking pump and a carbon dioxide concentration monitoring component; a fan, an air drying component, an upper sealing valve, a carbon dioxide trapping net and a lower sealing valve are coaxially arranged in the trapping pipe from left to right in sequence; wherein, the inner cavity of the trapping pipe between the upper sealing valve and the lower sealing valve is formed into a carbon dioxide adsorption chamber; the carbon dioxide adsorption and desorption chamber is provided with a gas collecting port and a gas outlet; wherein, the gas collecting port is connected with a carbon dioxide gas collecting tank, and the gas outlet is connected with a gas extracting pump; the carbon dioxide capture net comprises a support ring, pins, solid amine and heating wires. This application can be with the carbon dioxide continuous entrapment entering carbon dioxide gas holder of exhaling of airtight space personnel etc. on the one hand reduced indoor carbon dioxide content, on the other hand is favorable to the recycle of carbon dioxide, if the plant survival of being convenient for.
Description
Technical Field
The utility model relates to the technical field of carbon dioxide trapping, in particular to a carbon dioxide trapping device based on solid polyethylenimine adsorption.
Background
With the continuous exploitation and utilization of energy resources in China, non-renewable resources are increasingly reduced, and the recovery of resources in waste gas is gradually focused. In the components of the waste gas, carbon dioxide occupies a large proportion, and if the carbon dioxide can be separated, recovered and stored, the greenhouse effect can be slowed down, and the collected carbon dioxide can be used for supplementing related resources and energy.
Especially with the continuous development of the aerospace technology in China, more and more ecological cabins are established in the space environment or other celestial bodies in the future. In the ecological cartridge, the concentration of carbon dioxide must be controlled. However, carbon dioxide is produced more or less by both the living astronauts and animals and plants, as well as by mechanical devices in the tanks; meanwhile, carbon dioxide is also a rare resource in a space environment, can be used as a gas fertilizer and even can be used as one of future space propellants. Therefore, the capture and recovery of carbon dioxide are necessary.
At present, various methods for capturing carbon dioxide are mainly divided into physical, chemical and biological methods. The physical method mainly utilizes activated carbon for adsorption, but the optimal activation temperature of the activated carbon is often varied from 500 ℃ to 800 ℃ and the adsorption percentage is varied from 17.21% to 27.3%, so that the energy consumption and the danger of long-time efficient adsorption work are higher. In addition, the desorption of the activated carbon after carbon dioxide adsorption is very complicated, and usually, the desorption can be performed by high-temperature heating or reaction by using chemical reagents.
The physical methods mentioned above also use solutions for absorption, mainly based on CO 2 The solubility in solution changes with pressure to absorb or desorb. CO 2 The absorbent for physical absorption method mainly comprises water, methanol, propylene carbonate and other solutions. Most of the methods are carried out at low temperature and high pressure, and have the advantages of large gas absorption amount, no need of heating and equipment corrosion for absorbent regeneration, and the like, so that the problem of high temperature is solved, but higher pressure is needed.
Conventional chemisorption methods typically utilize sodium hydroxide to react with carbon dioxide to form sodium carbonate, thereby adsorbing and fixing the carbon dioxide. But the heat is released during the adsorption process, and the desorption is difficult after the adsorption, and the adsorption can only be used once, so that a new chemical adsorbent is required to be searched.
The biological adsorption method mainly utilizes photosynthesis of plants to fix carbon dioxide. When the plant body amount is large, the effect is obvious, but the speed of absorbing carbon dioxide in a closed room such as a space station is low, and the effect is not obvious. And maintenance of plant growth is also complicated, and generally, the biological adsorption method is used as an auxiliary method and cannot mainly rely on organisms to adsorb and desorb carbon dioxide in a room.
Disclosure of Invention
The utility model aims to solve the technical problems of the prior art, and provides a carbon dioxide trapping device based on solid-state polyethylenimine adsorption, which can continuously trap carbon dioxide exhaled by people in a closed space and the like into a carbon dioxide storage tank, so that on one hand, the indoor carbon dioxide content is reduced, and on the other hand, the carbon dioxide is recycled, such as plant survival is facilitated.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a carbon dioxide trapping device based on solid polyethylenimine adsorption comprises a trapping pipe, a carbon dioxide gas collecting tank, a sucking pump and a carbon dioxide concentration monitoring component.
A fan, an air drying component, an upper sealing valve, a carbon dioxide trapping net and a lower sealing valve are coaxially arranged in the trapping pipe from left to right in sequence; wherein, the inner cavity of the trapping pipe between the upper sealing valve and the lower sealing valve is formed into a carbon dioxide adsorption chamber.
The carbon dioxide adsorption and desorption chamber is provided with a gas collecting port and a gas outlet; wherein, the gas collection port is connected with a carbon dioxide gas collection tank, and the gas exhaust port is connected with a gas exhaust pump.
The carbon dioxide capture net comprises a support ring, pins, solid amine and heating wires.
The support rings are arranged in a radial concentric manner, and the outermost support ring is detachably connected with the collecting pipe; an annular groove is formed between two adjacent support rings.
A plurality of pins are uniformly distributed in each annular groove along the circumferential direction, and the outer Zhou Jun of each pin is sleeved with one solid amine.
The electric heating wire is spirally embedded in the annular groove of the supporting ring.
The carbon dioxide concentration monitoring assembly comprises an inner carbon dioxide concentration sensor and an outer carbon dioxide concentration sensor; wherein the internal carbon dioxide concentration sensor is used for monitoring the carbon dioxide concentration in the carbon dioxide adsorption chamber; the external carbon dioxide concentration sensor is used for monitoring the environmental carbon dioxide concentration of the space where the collecting pipe is located.
Each solid amine is of a cube structure.
Each solid amine is coaxially sleeved in the middle of the corresponding pin, and an annular gap is formed between each solid amine and the supporting ring on the inner side or the outer side; the electric heating wire is embedded in the annular gap.
The air pump is a two-way air pump.
The upper sealing valve and the lower sealing valve comprise sealing plates, plugging plates and plugging motors.
The outer ring of the sealing plate is in sealing connection with the collecting pipe, and the sealing plate is provided with a vent hole.
The plugging plate can seal and plug all the vent holes on the sealing plate under the drive of the plugging motor.
At least two guide sliding plates are arranged on one side of the sealing plate, facing the plugging plate, and are uniformly distributed on the periphery of the plugging plate and in sliding fit with the outer wall surface of the plugging plate.
The blocking motor is arranged on the inner wall surface of the collecting pipe through a motor bracket, and the blocking plate is arranged at the tail end of an output shaft of the blocking motor.
The vent holes are arc holes which are uniformly distributed along the circumferential direction.
The air drying assembly is an air dryer filled with calcium oxide powder.
The inner diameter of the collecting pipe is 161mm, the outer diameter is 171mm, and the length is 600mm; the length of the carbon dioxide adsorption chamber is 240mm-250mm, and the thickness of the carbon dioxide trapping net is 15mm-25mm.
The utility model has the following beneficial effects:
1. the adsorption and separation of carbon dioxide based on solid polyethylenimine (also called solid amine) is designed, the principle of adsorption of carbon dioxide by polyethylenimine solid material is based on intermolecular force adsorption, and the surface of polyethylenimine solid material has a large number of amino and carboxyl functional groups, which form certain gaps and pore channels on microscopic level, and the gaps and pore channels form a molecular sieve-shaped structure. The carbon dioxide has moderate molecular size, can enter the molecular sieve structure through the gaps and the pore channels, and generates intermolecular acting force with the molecular sieve structure on the surface of the solid material. Meanwhile, the polyethyleneimine has the advantages of high adsorption capacity, high selectivity, strong reversibility, strong heat resistance, strong applicability and the like. Therefore, the method can be used for meeting the requirement of capturing carbon dioxide in the closed room such as a space station for a long time at low concentration, and has the advantages of low energy consumption, low noise, long-time operation and the like.
2. The method can solve the problem of capturing indoor carbon dioxide, has good adaptability to airtight indoor environments such as space stations, alien bases and the like, can continuously capture and enter the carbon dioxide storage tank through the carbon dioxide exhaled by airtight space personnel and the like, reduces the content of indoor carbon dioxide on the one hand, and is beneficial to recycling the carbon dioxide on the other hand, such as being convenient for plant survival.
3. The method is easy to process, low in cost, convenient to place, low in energy consumption, low in noise and capable of running for a long time.
Drawings
FIG. 1 shows a schematic structure of a carbon dioxide trapping device based on solid state polyethyleneimine adsorption according to the present utility model.
Fig. 2 shows a schematic structural view of the upper sealing valve or the lower sealing valve in the present utility model.
Fig. 3 shows a front view of the carbon dioxide trapping net without the heating wires in the present utility model.
Fig. 4 shows a partial axial side enlarged view of the carbon dioxide capturing net in the present utility model.
Fig. 5 shows a schematic structure of the heating wire in the present utility model.
Fig. 6 shows a front view of the carbon dioxide trapping net of the present utility model with heating wires embedded therein.
The method comprises the following steps:
10. a collection tube; 11. an adsorption chamber; 12. an air collecting port; 121. a vacuum pump; 122. a carbon dioxide gas collection tank;
13. an exhaust port; 131. a two-way vacuum pump;
20. a fan;
30. an air drying assembly;
40. an upper sealing valve;
41. a sealing plate; 411. a through hole; 412. a guide slide plate; 42. a plugging plate; 43. plugging the motor; 431. a motor bracket;
50. a carbon dioxide capture net; 51. a support ring; 52. a pin; 53. solid amines; 54. an annular slit; 55. heating wires;
60. a lower sealing valve;
70. an internal carbon dioxide concentration sensor; 80. an external carbon dioxide concentration sensor.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present utility model, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present utility model. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present utility model.
As shown in fig. 1, a carbon dioxide capturing device based on solid state polyethylenimine adsorption comprises a capturing tube 10, a carbon dioxide gas collection tank 122, a suction pump and a carbon dioxide concentration monitoring assembly.
A fan 20, an air drying assembly 30, an upper sealing valve 40, a carbon dioxide capturing net 50 and a lower sealing valve 60 are coaxially arranged in the capturing pipe from left to right in sequence; wherein, the inner cavity of the trap tube between the upper sealing valve and the lower sealing valve is formed into a carbon dioxide absorption and desorption chamber 11.
The air drying unit is preferably an air drying chamber filled with calcium oxide powder, and is capable of adsorbing moisture in the air.
In this embodiment, the trap tube preferably has an inner diameter of 161mm, an outer diameter of 171mm, and a length of 600mm; the length of the carbon dioxide adsorption chamber is preferably 240mm to 250mm.
The carbon dioxide adsorption and desorption chamber is provided with a gas collection port 12 and a gas exhaust port 13; wherein, the gas collection port is preferably connected with a carbon dioxide gas collection tank through a vacuum pump 121, and the gas exhaust port is connected with a gas extraction pump; further, the pump is preferably a bi-directional pump 131.
As shown in fig. 3, 4 and 5, the carbon dioxide capture net includes a support ring 51, pins 52, solid amine 53 and heating wires 55.
The plurality of support rings are arranged concentrically in a radial manner, and the outermost support ring and the trapping pipe are preferably detachably connected through bolts; an annular groove is formed between two adjacent support rings.
In this embodiment, the thickness of the carbon dioxide capture net (i.e., the thickness of the support ring) is preferably 15mm to 25mm.
A plurality of pins are uniformly distributed in each annular groove along the circumferential direction, and a solid amine is sleeved outside Zhou Jun of each pin. Further, each solid amine is coaxially sleeved in the middle of the corresponding pin, and an annular gap 54 is formed between each solid amine and the inner or outer support ring.
Furthermore, each solid amine is of a preferable cube structure, so that after the solid amine is arranged, the contact area between the solid amine and air is relatively large, meanwhile, the pressure of wind to the structure is relatively small, and the wind can smoothly flow out and capture carbon dioxide in the wind.
As shown in fig. 2, the upper and lower sealing valves each preferably include a sealing plate 41, a blocking plate 42, and a blocking motor 43.
The outer ring of the sealing plate is preferably in sealing connection with the collecting pipe through a sealing gasket, and the sealing plate is provided with a vent hole. In this embodiment, the ventilation holes are preferably arc-shaped holes 411 uniformly distributed in the circumferential direction.
At least two guide sliding plates 412 are arranged on one side of the sealing plate, facing the plugging plate, and are uniformly distributed on the periphery of the plugging plate and are in sliding fit with the outer wall surface of the plugging plate.
The blocking motor is preferably arranged on the inner wall surface of the collecting pipe through a motor bracket 431, and a blocking plate is arranged at the tail end of an output shaft of the blocking motor.
The plugging plate can seal and plug all the vent holes on the sealing plate under the drive of the plugging motor.
The heating wire is preferably inserted into the annular slit of the support ring, as shown in fig. 5 and 6.
The carbon dioxide concentration monitoring assembly includes an inner carbon dioxide concentration sensor 70 and an outer carbon dioxide concentration sensor 80; wherein the internal carbon dioxide concentration sensor is used for monitoring the carbon dioxide concentration in the carbon dioxide adsorption chamber; the external carbon dioxide concentration sensor is used for monitoring the environmental carbon dioxide concentration of the space where the collecting pipe is located.
In the present application, the carbon dioxide capturing method preferably includes the following steps.
Step 1, air drying: the fan begins to fan air into the collection tube, the air first entering the air drying chamber where the moisture in the air is substantially absorbed by the calcium oxide, while reducing the air circulation rate, ready for subsequent adsorption of carbon dioxide.
Step 2, capturing carbon dioxide: the air after drying and speed reduction enters the oxidation adsorption chamber through the opened upper sealing valve, is adsorbed by solid amine (also called solid polyethylenimine) in the carbon dioxide trapping net to obtain carbamate and alkyl carbonate, and the adsorbed air flows out from the opened lower sealing valve.
Step 3, monitoring the concentration of carbon dioxide: monitoring the carbon dioxide concentration in the carbon dioxide adsorption chamber in real time by adopting an internal carbon dioxide concentration sensor; and an external carbon dioxide concentration sensor is adopted to monitor the environmental carbon dioxide concentration of the space where the collecting pipe is positioned in real time.
Step 4, forming a closed desorption space: when the difference between the carbon dioxide concentration in the adsorption chamber and the environment is smaller than the set value or the monitoring value of the carbon dioxide concentration sensor in the adjacent moment is obviously reduced, the carbon dioxide in the air is adsorbed in a larger part. At this time, the fan is turned off while the upper sealing valve and the lower sealing valve are closed, so that the carbon dioxide adsorption and desorption chamber is formed as a closed desorption space.
Step 5, starting a bidirectional air pump: firstly, the air in the closed desorption space is pumped out through the exhaust port by adopting the bidirectional air pump, so that negative pressure is formed in the closed desorption space, and then the bidirectional air pump is closed.
Step 6, desorption: the heating wire starts to heat, preferably to about 130 ℃, and carbon dioxide starts to desorb from the solid polyethylenimine.
Step 7, monitoring the concentration of desorption carbon dioxide: and (3) monitoring the concentration of the carbon dioxide after the desorption in the step (6) in real time by adopting an internal carbon dioxide concentration sensor.
Step 8, capturing carbon dioxide: when the concentration of the desorbed carbon dioxide basically keeps stable or has little change, the heating wire is closed, the vacuum pump is opened, and the desorbed carbon dioxide is pumped into the carbon dioxide collecting tank through the gas collecting port.
Step 9, restarting the bi-directional air pump: after the carbon dioxide is completely extracted, a bi-directional air pump is turned on, air is pumped into a carbon dioxide adsorption and desorption chamber (also called a carbon dioxide capture chamber), then a blocking motor is started, an upper sealing valve and a lower sealing valve are opened, a fan is turned on, and air is re-introduced, so that a cycle is completed.
The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the equivalent changes belong to the protection scope of the present utility model.
Claims (10)
1. Carbon dioxide trapping apparatus based on solid state polyethylenimine adsorbs, its characterized in that: comprises a collecting pipe, a carbon dioxide collecting tank, an air extracting pump and a carbon dioxide concentration monitoring component;
a fan, an air drying component, an upper sealing valve, a carbon dioxide trapping net and a lower sealing valve are coaxially arranged in the trapping pipe from left to right in sequence; wherein, the inner cavity of the trapping pipe between the upper sealing valve and the lower sealing valve is formed into a carbon dioxide adsorption chamber;
the carbon dioxide adsorption and desorption chamber is provided with a gas collecting port and a gas outlet; wherein, the gas collecting port is connected with a carbon dioxide gas collecting tank, and the gas outlet is connected with a gas extracting pump;
the carbon dioxide trapping net comprises a supporting ring, pins, solid amine and heating wires;
the support rings are arranged in a radial concentric manner, and the outermost support ring is detachably connected with the collecting pipe; an annular groove is formed between two adjacent support rings;
a plurality of pins are uniformly distributed in each annular groove along the circumferential direction, and the outer Zhou Jun of each pin is sleeved with one solid amine; the electric heating wire is spirally embedded in the annular groove of the supporting ring;
the carbon dioxide concentration monitoring assembly comprises an inner carbon dioxide concentration sensor and an outer carbon dioxide concentration sensor; wherein the internal carbon dioxide concentration sensor is used for monitoring the carbon dioxide concentration in the carbon dioxide adsorption chamber; the external carbon dioxide concentration sensor is used for monitoring the environmental carbon dioxide concentration of the space where the collecting pipe is located.
2. The solid state polyethylenimine adsorption-based carbon dioxide capture device of claim 1, wherein: each solid amine is of a cube structure.
3. The carbon dioxide capture device based on solid state polyethylenimine adsorption of claim 1 or 2, characterized in that: each solid amine is coaxially sleeved in the middle of the corresponding pin, and an annular gap is formed between each solid amine and the supporting ring on the inner side or the outer side; the electric heating wire is embedded in the annular gap.
4. The solid state polyethylenimine adsorption-based carbon dioxide capture device of claim 1, wherein: the air pump is a two-way air pump.
5. The solid state polyethylenimine adsorption-based carbon dioxide capture device of claim 1, wherein: the upper sealing valve and the lower sealing valve comprise sealing plates, plugging plates and plugging motors;
the outer ring of the sealing plate is in sealing connection with the collecting pipe, and the sealing plate is provided with a vent hole;
the plugging plate can seal and plug all the vent holes on the sealing plate under the drive of the plugging motor.
6. The solid state polyethylenimine adsorption-based carbon dioxide capture device of claim 5, wherein: at least two guide sliding plates are arranged on one side of the sealing plate, facing the plugging plate, and are uniformly distributed on the periphery of the plugging plate and in sliding fit with the outer wall surface of the plugging plate.
7. The solid state polyethylenimine adsorption based carbon dioxide capture device of claim 5 or 6, wherein: the blocking motor is arranged on the inner wall surface of the collecting pipe through a motor bracket, and the blocking plate is arranged at the tail end of an output shaft of the blocking motor.
8. The solid state polyethylenimine adsorption-based carbon dioxide capture device of claim 5, wherein: the vent holes are arc holes which are uniformly distributed along the circumferential direction.
9. The solid state polyethylenimine adsorption-based carbon dioxide capture device of claim 1, wherein: the air drying assembly is an air dryer filled with calcium oxide powder.
10. The solid state polyethylenimine adsorption-based carbon dioxide capture device of claim 1, wherein: the inner diameter of the collecting pipe is 161mm, the outer diameter is 171mm, and the length is 600mm; the length of the carbon dioxide adsorption chamber is 240mm-250mm, and the thickness of the carbon dioxide trapping net is 15mm-25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321289116.2U CN220276621U (en) | 2023-05-25 | 2023-05-25 | Carbon dioxide trapping device based on solid polyethylenimine adsorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321289116.2U CN220276621U (en) | 2023-05-25 | 2023-05-25 | Carbon dioxide trapping device based on solid polyethylenimine adsorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220276621U true CN220276621U (en) | 2024-01-02 |
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ID=89328492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321289116.2U Active CN220276621U (en) | 2023-05-25 | 2023-05-25 | Carbon dioxide trapping device based on solid polyethylenimine adsorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220276621U (en) |
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2023
- 2023-05-25 CN CN202321289116.2U patent/CN220276621U/en active Active
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