CN117101356A - Device for directly capturing carbon dioxide - Google Patents
Device for directly capturing carbon dioxide Download PDFInfo
- Publication number
- CN117101356A CN117101356A CN202311141799.1A CN202311141799A CN117101356A CN 117101356 A CN117101356 A CN 117101356A CN 202311141799 A CN202311141799 A CN 202311141799A CN 117101356 A CN117101356 A CN 117101356A
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- China
- Prior art keywords
- carbon dioxide
- regeneration
- area
- heating
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 102
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 102
- 230000008929 regeneration Effects 0.000 claims abstract description 55
- 238000011069 regeneration method Methods 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000011858 nanopowder Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 28
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract description 21
- KJAMZCVTJDTESW-UHFFFAOYSA-N tiracizine Chemical compound C1CC2=CC=CC=C2N(C(=O)CN(C)C)C2=CC(NC(=O)OCC)=CC=C21 KJAMZCVTJDTESW-UHFFFAOYSA-N 0.000 abstract description 21
- 238000010521 absorption reaction Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000003795 desorption Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1425—Regeneration of liquid absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1475—Removing carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/204—Amines
- B01D2252/2041—Diamines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/25—Coated, impregnated or composite adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/30—Physical properties of adsorbents
- B01D2253/34—Specific shapes
- B01D2253/342—Monoliths
- B01D2253/3425—Honeycomb shape
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention relates to the technical field of carbon capture, in particular to a device for directly capturing carbon dioxide, which comprises a tower body, wherein an inner cavity of the tower body comprises a spraying area, a filling area and a regeneration area which are sequentially communicated from top to bottom, an air outlet and an upper carbon dioxide outlet are formed above the spraying area, the filling area is filled with aluminum honeycomb filling and a first heating piece, the regeneration area comprises a regeneration cavity and a second heating piece, and the regeneration cavity is provided with a lower carbon dioxide outlet; according to the invention, isophorone diamine is utilized to carry out chemical adsorption of carbon dioxide, aluminum powder loaded carbamic acid is used for forming physical adsorption of carbon dioxide, the physical adsorption process is not only surface adsorption, and along with the progress of absorption, the surface of an adsorption layer is updated in time to obtain a new physical adsorption surface, so that the carbon dioxide removal efficiency is improved, the device can realize continuous carbon dioxide absorption and continuous regeneration, and the carbon dioxide can be desorbed conveniently after absorption, so that high-purity concentrated carbon dioxide is obtained.
Description
Technical Field
The invention relates to the technical field of carbon capture, in particular to a device for directly capturing carbon dioxide.
Background
The increase in the carbon dioxide content in the atmosphere is one of the main causes of global temperature rise and climate change, and technologies for capturing carbon dioxide directly from the air are being developed while reducing the emission amount by using new energy. In general, one uses a pipe to transport air or to remove carbon dioxide through some filter or catalyst, the components of which include magnetic sponge, zeolite foam or materials made of clay, coffee grounds. Another way of carbon capture is a "liquid-solid phase separation system", i.e. the use of a liquid to bubble air, which may absorb carbon dioxide or separate it into solid crystals or flakes.
The organic amine load and the filler surface can obtain better adsorption effect, but the traditional load is carried on the surface of larger particles, so that the adsorption specific surface area is smaller, and the adsorption capacity is reduced. If the powder is adsorbed on the surface of the powder, the adsorption effect can be greatly improved, but the powder material has a certain defect in practical application due to strong flowability along with the airflow, so that the powder is lost.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems of small adsorption specific surface area and reduced adsorption capacity of the carbon dioxide capturing device in the prior art, a device for directly capturing carbon dioxide is provided.
In order to solve the technical problems, the invention adopts the following technical scheme: the device for directly capturing the carbon dioxide comprises a tower body, wherein the inner cavity of the tower body comprises a spraying area, a filling area and a regeneration area which are sequentially communicated from top to bottom, an air inlet is formed between the filling area and the regeneration area for the entry of air containing the carbon dioxide, and an air outlet and an upper carbon dioxide outlet are formed above the spraying area;
the spraying area is provided with a spraying head for spraying a mixed solution formed by isophorone diamine and metal aluminum nano powder to the filler area;
the filler area is filled with aluminum honeycomb filler and a first heating piece for heating the filler;
the regeneration zone comprises a regeneration cavity and a second heating piece for heating the regeneration cavity, the regeneration cavity is provided with a lower carbon dioxide outlet, a connecting pipeline is arranged between the spray header and the regeneration cavity, and a delivery pump is arranged on the connecting pipeline.
When the method is operated, a proper amount of isophorone diamine and metal aluminum nano powder are added into a tower body, an air outlet is opened, an upper carbon dioxide outlet and a lower carbon dioxide outlet are closed, a conveying pump is started, air to be removed is introduced into an air inlet, air flow moves upwards, a mixed solution of isophorone diamine and metal aluminum nano powder is pumped into a spray head by the conveying pump, sprayed from the upper part and contacted with the air, carbon dioxide in the air is absorbed to generate solid carbamic acid, and is combined with aluminum powder, a part of the solid carbamic acid is adhered to the surface of a filler, a part of the solid carbamic acid flows down along with isophorone diamine and enters a regeneration cavity, when the formed solid amount is large, a second heating piece is started, the temperature of the regeneration cavity is kept at 59-60 ℃, absorbed carbon dioxide is released and collected from the lower carbon dioxide outlet, isophorone diamine can be repeatedly utilized, and carbon dioxide is continuously sprayed and absorbed;
after long-time absorption, aluminum powder loaded carbamic acid formed on the surface of the honeycomb filler can form a physical absorption effect on carbon dioxide, the absorbed surface can be continuously covered by a new adsorbent, the adsorption efficiency is greatly improved compared with that of the traditional adsorbent, when the surface of the honeycomb filler is blocked or the obvious adsorption capacity is reduced after long-time use, the air outlet is closed, the air is stopped to blow in, the upper carbon dioxide outlet is opened, the first heating element is started, the temperature of the filler area reaches 59-60 ℃, the carbamic acid on the surface of the honeycomb filler is decomposed, carbon dioxide is released, the carbon dioxide escapes from the upper carbon dioxide outlet and is collected, the liquid flows back to the regeneration cavity again, and then the operation can be restarted to continuously adsorb the carbon dioxide in the air.
According to the technical scheme, isophorone diamine is utilized to carry out chemical adsorption of carbon dioxide, aluminum powder loaded carbamic acid is used for forming physical adsorption on carbon dioxide, the physical adsorption process is not only surface adsorption, along with the progress of absorption, the surface of an adsorption layer is updated in time, and a new physical adsorption surface is obtained, so that the carbon dioxide removal efficiency is improved, the device can realize continuous carbon dioxide absorption and continuous regeneration, and carbon dioxide can be desorbed conveniently after absorption, so that high-purity concentrated carbon dioxide is obtained.
Further, the regeneration cavity is formed by enclosing a conical cylinder body and a cover body covering the conical cylinder body, the cover body comprises two cover plates arranged at intervals, a circulation port is formed between the cover plates, so that the filling area is communicated with the regeneration area, and when solid carbamic acid entering the regeneration cavity from the filling area is heated, carbon dioxide is released, the circulation port formed by the two cover plates can block the carbon dioxide and escape from the solid carbamic acid, and the carbon dioxide can escape from the lower carbon dioxide and then be collected.
Furthermore, the cover body is obliquely arranged, when the filling area is in a carbon dioxide absorption stage, part of solid carbamic acid can enter the regeneration cavity along with isophorone diamine along the oblique cover body, when the filling area is in a carbon dioxide desorption stage, carbamic acid on the surface of the honeycomb filling material is decomposed to form isophorone diamine liquid which can enter the regeneration cavity along the oblique cover body, and the oblique cover body can prevent solid or liquid from accumulating on the inclined cover body.
Further, the lower carbon dioxide outlet is arranged opposite to the circulation port, the cover body gradually inclines upwards from the direction of the downward carbon dioxide outlet of the circulation port, the circulation port is positioned at a low position and forms a subsurface flow so as to be favorable for blocking carbon dioxide, the lower carbon dioxide outlet is positioned at a high position, and released carbon dioxide flows out from the lower carbon dioxide outlet along the inclined cover body.
Further, the second heating piece comprises a heating ring plate encircling the outside of the conical cylinder body, the outer peripheral wall of the conical cylinder body and the inner peripheral wall of the tower body encircle to form a closed cavity, the heating ring plate is positioned in the closed cavity and encircling the outside of the cylinder body, and heat generated by the heating ring plate can be fully absorbed by the regeneration cavity, so that the heating efficiency is high.
Further, the first heating mechanism comprises a plurality of heating sieve plates which are distributed at intervals, the filler is filled between two adjacent heating sieve plates, the plurality of heating sieve plates can enable the filler to be heated more uniformly, and solid carbamic acid or isophorone diamine enters the regeneration zone through sieve holes on the sieve plates.
Further, a heat exchange device for cooling the liquid from the regeneration cavity is arranged on the connecting pipeline, so that the temperature of the liquid sprayed from the spray header is kept at 10-25 ℃.
Further, the bottom of the regeneration cavity is provided with a stirring impeller.
The beneficial effects of the invention are as follows: according to the invention, isophorone diamine is utilized to carry out chemical adsorption of carbon dioxide, aluminum powder loaded carbamic acid is used for forming physical adsorption of carbon dioxide, the physical adsorption process is not only surface adsorption, and along with the progress of absorption, the surface of an adsorption layer is updated in time to obtain a new physical adsorption surface, so that the carbon dioxide removal efficiency is improved, the device can realize continuous carbon dioxide absorption and continuous regeneration, and the carbon dioxide can be desorbed conveniently after absorption, so that high-purity concentrated carbon dioxide is obtained.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure:
1. a tower body; 101. a spraying area; 102. a filler zone; 103. a regeneration zone; 104. an air inlet; 105. an air outlet; 106. a carbon dioxide outlet; 107. a lower carbon dioxide outlet; 2. a spray header; 3. a filler; 4. heating the screen plate; 5. heating the annular plate; 6. a connecting pipe; 7. a transfer pump; 8. a conical cylinder; 9. a cover plate; 10. a flow port; 11. a heat exchange device; 12. an impeller.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention, and orientation and reference such as up, down, left, right, etc. may be used only to assist in the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Embodiment one:
as shown in fig. 1, the invention relates to a device for directly capturing carbon dioxide, which comprises a tower body 1, wherein an inner cavity of the tower body 1 comprises a spraying area 101, a filling area 102 and a regeneration area 103 which are sequentially communicated from top to bottom, an air inlet 104 is formed between the filling area 102 and the regeneration area 103 for allowing carbon dioxide-containing air to enter, and an air outlet 105 and an upper carbon dioxide outlet 106 are formed above the spraying area 101;
the spraying area 101 is provided with a spraying head 2 for spraying a mixed solution formed by isophorone diamine and metal aluminum nano powder to the filler area 102;
the packing region 102 is filled with aluminum honeycomb packing 3 and a first heating element for heating the packing 3, the first heating mechanism comprises a plurality of heating screen plates 4 which are distributed at intervals, the packing 3 is filled between two adjacent heating screen plates 4, the plurality of heating screen plates 4 can enable the packing 3 to be heated more uniformly, and solid liquid formed in the carbon dioxide absorption and desorption processes can enter the regeneration region 103 through the screen holes on the heating screen plates 4;
the regeneration zone 103 comprises a regeneration cavity and a second heating element for heating the regeneration cavity, the bottom of the regeneration cavity is provided with a stirring impeller 12, the regeneration cavity is provided with a lower carbon dioxide outlet 107, a connecting pipeline 6 is arranged between the spray header 2 and the regeneration cavity, and a conveying pump 7 and a heat exchange device 11 for cooling liquid from the regeneration cavity are arranged on the connecting pipeline 6, so that the temperature of the liquid sprayed from the spray header 2 is kept at 10-25 ℃.
The regeneration cavity is formed by enclosing a conical cylinder body 8 and a cover body which is covered above the conical cylinder body 8, the cover body comprises two cover plates 9 which are arranged at intervals, a circulation port 10 is formed between the two cover plates, so that a filling area 102 is communicated with a regeneration area 103, and when solid carbamic acid entering the regeneration cavity from the filling area 102 is heated, carbon dioxide is released, the circulation port 10 formed by the two cover plates 9 can block the carbon dioxide from escaping from the regeneration cavity when the carbon dioxide is released, and the carbon dioxide escapes from a lower carbon dioxide outlet 107 for collection;
the cover body is obliquely arranged, when the filler area 102 is in a carbon dioxide absorption stage, part of solid carbamic acid can enter the regeneration cavity along with isophorone diamine along the oblique cover body, and when the filler area 102 is in a carbon dioxide desorption stage, carbamic acid on the surface of the honeycomb filler 3 is decomposed to form isophorone diamine liquid which can enter the regeneration cavity along the oblique cover body, and the oblique cover body can prevent solids or liquid from accumulating on the inclined cover body.
The lower carbon dioxide outlet 107 is opposite to the flow port 10, and the cover body gradually inclines upwards from the flow port 10 to the direction of the lower carbon dioxide outlet 107, the flow port 10 is positioned at a low position and forms a subsurface flow, which is beneficial to blocking carbon dioxide, the lower carbon dioxide outlet 107 is positioned at a high position, and released carbon dioxide flows out from the lower carbon dioxide outlet 107 along the inclined cover body.
The second heating element comprises a heating annular plate 5 encircling the outside of the conical cylinder body 8, the outer peripheral wall of the conical cylinder body 8 and the inner peripheral wall of the tower body 1 encircle to form a closed cavity, the heating annular plate 5 is positioned in the closed cavity and encircling the outside of the cylinder body, the generated heat can be fully absorbed by the regeneration cavity, and the heating efficiency is high.
Working principle:
when the method is operated, a proper amount of isophorone diamine and metal aluminum nano powder are added into a tower body 1, an air outlet 105 is opened, an upper carbon dioxide outlet 106 and a lower carbon dioxide outlet 107 are closed, a conveying pump 7 is started, air to be removed is introduced into an air inlet 104, air flow moves upwards, isophorone diamine and metal aluminum nano powder are sucked into a spray header 2 by the conveying pump 7 and sprayed from the upper part to contact with the air, carbon dioxide in the air is absorbed to generate solid carbamic acid which is combined with aluminum powder, a part of the solid carbamic acid is adhered to the surface of a filler 3, a part of the solid carbamic acid flows down along with isophorone diamine and flows into the bottom of a conical cylinder 8 through a flow opening 10, when the formed solid amount is large, a heating annular plate 5 is started, the temperature of the conical cylinder 8 is kept at 59-60 ℃, the absorbed carbon dioxide is released from the lower carbon dioxide outlet 107 and can be repeatedly utilized, and the carbon dioxide is continuously sprayed and absorbed;
after long-time absorption, the aluminum powder loaded carbamic acid formed on the surface of the honeycomb filler 3 can form a physical absorption effect on carbon dioxide, the absorbed surface can be continuously covered by a new adsorbent, the adsorption effect is greatly improved compared with that of the traditional adsorbent, when the surface of the honeycomb filler 3 is blocked or the obvious adsorption capacity is reduced after long-time use, the air blowing is stopped, the air outlet 105 is closed, the upper carbon dioxide outlet 106 is opened, the power supply of the heating sieve plate 4 is connected, the temperature of the heating sieve plate 4 reaches 59-60 ℃, the carbamic acid on the surface of the honeycomb filler 3 is decomposed, carbon dioxide is released, the carbon dioxide escapes from the upper carbon dioxide outlet 106 and is collected, the liquid flows back to the bottom of the conical cylinder 8 again, and then the operation can be restarted to continuously adsorb the carbon dioxide in the air.
The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. An apparatus for directly capturing carbon dioxide, characterized by: the novel tower comprises a tower body (1), wherein the inner cavity of the tower body (1) comprises a spraying area (101), a filling area (102) and a regeneration area (103) which are sequentially communicated from top to bottom, an air inlet (104) is formed between the filling area (102) and the regeneration area (103), and an air outlet (105) and an upper carbon dioxide outlet (106) are formed above the spraying area (101);
the spraying area (101) is provided with a spray header (2) for spraying a mixed solution formed by isophorone diamine and metal aluminum nano powder to the filler area (102);
the filler zone (102) is filled with aluminum honeycomb filler (3) and a first heating element for heating the filler (3);
the regeneration zone (103) comprises a regeneration cavity and a second heating piece for heating the regeneration cavity, the regeneration cavity is provided with a lower carbon dioxide outlet (107), a connecting pipeline (6) is arranged between the spray header (2) and the regeneration cavity, and a conveying pump (7) is arranged on the connecting pipeline (6).
2. An apparatus for direct capture of carbon dioxide according to claim 1, wherein: the regeneration cavity is formed by enclosing a conical cylinder body (8) and a cover body which is covered above the conical cylinder body (8), the cover body comprises two cover plates (9) which are arranged at intervals, and a communication filling area (102) and a circulation port (10) of the regeneration cavity are formed between the two cover plates.
3. An apparatus for direct capture of carbon dioxide according to claim 2, wherein: the cover body is obliquely arranged.
4. A device for direct capture of carbon dioxide according to claim 3, wherein: the lower carbon dioxide outlet (107) is opposite to the circulation port (10), and the cover body gradually inclines upwards from the circulation port (10) to the carbon dioxide outlet (107).
5. An apparatus for direct capture of carbon dioxide according to claim 1, wherein: the second heating element comprises a heating ring plate (5) surrounding the outside of the conical cylinder (8).
6. An apparatus for direct capture of carbon dioxide according to claim 1, wherein: the first heating mechanism comprises a plurality of heating screen plates (4) which are distributed at intervals, and the filler (3) is filled between two adjacent heating screen plates (4).
7. An apparatus for direct capture of carbon dioxide according to claim 1, wherein: the connecting pipeline (6) is provided with a heat exchange device (11) for cooling the liquid from the regeneration cavity.
8. An apparatus for direct capture of carbon dioxide according to claim 1, wherein: the bottom of the regeneration cavity is provided with a stirring impeller (12).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311141799.1A CN117101356A (en) | 2023-09-05 | 2023-09-05 | Device for directly capturing carbon dioxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311141799.1A CN117101356A (en) | 2023-09-05 | 2023-09-05 | Device for directly capturing carbon dioxide |
Publications (1)
Publication Number | Publication Date |
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CN117101356A true CN117101356A (en) | 2023-11-24 |
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ID=88798182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202311141799.1A Withdrawn CN117101356A (en) | 2023-09-05 | 2023-09-05 | Device for directly capturing carbon dioxide |
Country Status (1)
Country | Link |
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CN (1) | CN117101356A (en) |
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2023
- 2023-09-05 CN CN202311141799.1A patent/CN117101356A/en not_active Withdrawn
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Application publication date: 20231124 |