Carbon dioxide trapping and sealing device

Abstract

The invention discloses a carbon dioxide trapping and sealing device, which belongs to the technical field of carbon dioxide trapping, and comprises a trapping container with a gas outlet pipe arranged at the top and a gas inlet pipe arranged at the bottom, and a control end arranged on the outer wall of the trapping container, and further comprises a stacked reaction tower vertically arranged in the trapping container and formed by stacking multiple stages of conical units, annular air gaps are formed among the multi-stage conical units, an airflow distributor and a central shaft tube are fixedly mounted at the bottom of the multi-stage conical units, and the central shaft tube is fixed with the multi-stage conical units through a bracket; and the alkaline solution supply assembly is arranged at the top of the trapping container. Flue gas with carbon dioxide escapes through the annular air gap of the laminated reaction tower, the alkaline solution is sprayed to the laminated reaction tower through the alkaline solution supply assembly, and after the carbon dioxide escapes from the annular air gap, the carbon dioxide and the alkaline solution are intersected twice, so that the carbon dioxide is fully captured.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide capture, and particularly to a carbon dioxide capture and storage device. Background Art

[0002] The chemical method is one of the mainstream carbon dioxide capture and storage methods. There are many types of solvents used. For example, in the treatment method using amine solution as the solvent, after the flue gas is pretreated, it enters the absorption system to react with the solvent. The rich amine solution is heated to 90 - 100 degrees through a rich and lean liquid heat exchanger and then enters the regeneration tower for regeneration. Carbon dioxide with a purity of more than 99.5% is desorbed, compressed and liquefied in three stages, and finally stored. However, the absorption system depends on the packing in the absorption tower, with low gas-liquid mass transfer efficiency (0.2 - 0.4 m / h), requiring a relatively high packing height, and having disadvantages such as too high regeneration energy consumption and relatively large solvent loss (annual supplementary addition amount of 15 - 25%).

[0003] Another method is to use other alkaline substances, such as calcium hydroxide, to react with the flue gas through the spraying method to achieve carbon dioxide capture. There is no need for a too high packing layer in the device, and solid calcium carbonate can be directly collected for storage. The difficulty of carbon dioxide storage is relatively small, and the problem of too high regeneration energy consumption is avoided.

[0004] In the above-mentioned prior art, directly spraying calcium hydroxide solution in countercurrent with the flue gas also has some disadvantages: due to the lack of a packing layer, after the alkaline solution is sprayed, larger droplets quickly fall because the gravity is greater than the thrust of the upward air flow, while tiny droplets are easily entrained and escaped by the upward air flow, resulting in insufficient reaction.

[0005] Therefore, we propose a carbon dioxide capture and storage device to solve the problems raised above.

[0006] The above information disclosed in this background art is only used to increase the understanding of the background art of the present invention. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0007] The purpose of the present invention is to provide a carbon dioxide capture and storage device to solve the problem of insufficient reaction in the current prior art by directly spraying alkaline solution as mentioned in the above background art.

[0008] To achieve the above purpose, the present invention provides a carbon dioxide capture and storage device, including a capture container, which is provided with an air outlet pipe at the top and an air inlet pipe at the bottom. The outer wall of the capture container is provided with a control end, and further includes:

[0009] The stacked reaction tower is vertically arranged inside the capture container and is composed of a stack of multiple conical units. An annular air gap is formed between the multiple conical units, and an air flow distributor and a central shaft tube are fixedly installed at the bottom. The central shaft tube is fixed to the multiple conical units through brackets;

[0010] The alkaline solution supply assembly is arranged at the top of the capture container and includes a delivery pump set and a spraying mechanism annularly distributed at the top of the inner cavity of the capture container. The delivery pump set is communicated with the spraying mechanism;

[0011] The surface cleaning mechanism is arranged inside the capture container and is attached to the outer surface of the stacked reaction tower;

[0012] The motor is arranged at the bottom of the capture container, and the output shaft is in transmission connection with the surface cleaning mechanism;

[0013] The flushing assembly is arranged at the top of the capture container and includes a flushing pump set and a flushing mechanism annularly distributed at the top of the inner cavity of the capture container;

[0014] The spiral guide plate is arranged between the capture container and the stacked reaction tower, and the end is connected with a slag discharge port, and the slag discharge port penetrates to the outside of the capture container;

[0015] The control end is electrically connected to the motor, the alkaline solution supply assembly, and the flushing assembly.

[0016] Preferably, the multiple conical units of the stacked reaction tower include a bottom cone, at least two intermediate cones, and a top cone, and are fixed through the central shaft tube and brackets;

[0017] The air flow distributor is provided with air guiding openings, forming a continuous gas channel with the annular air gap.

[0018] Preferably, the capture container includes a conical tank body, and a first annular baffle and a second annular baffle which are concentrically arranged and fixedly installed at the bottom of the inner cavity, and are located below the air flow distributor and are fixed to the air flow distributor;

[0019] The air guiding openings provided on the air flow distributor are located between the first annular baffle and the second annular baffle;

[0020] The intake pipe penetrates into the air chamber formed by the first annular baffle and the second annular baffle.

[0021] Preferably, the spraying mechanism of the alkaline solution supply assembly includes a main spraying ring pipe, which is arranged along the conical surface at the top of the inner cavity of the conical tank body, and is distributed with directional spray heads. The spraying direction of the directional spray heads forms a normal angle with the surface of the top cone;

[0022] The transfer pump group of the alkaline solution supply assembly includes a first box body fixedly installed on the top of the outer wall of the conical tank. A first transfer pump is arranged inside the first box body, and an alkaline solution input pipe and an alkaline solution output pipe are respectively connected to the input end and the output end of the first transfer pump;

[0023] The alkaline solution output pipe penetrates into the conical tank and is communicated with the main spray manifold.

[0024] Preferably, the surface cleaning mechanism includes:

[0025] A bottom scraper attached to the outer surface of the bottom cone;

[0026] Stacked scrapers synchronously attached to the outer surfaces of the middle cone and the top cone;

[0027] The bottom scraper and the stacked scrapers are fixed;

[0028] The stacked reaction tower further includes a rotating shaft for transmission, which is arranged in the central shaft tube. The bottom of the rotating shaft is connected to the output shaft of the motor through gear transmission, and the top penetrates out of the top cone and is fixed to the stacked scrapers.

[0029] Preferably, the flushing mechanism of the flushing assembly includes:

[0030] A flushing manifold arranged on the conical surface of the inner cavity of the conical tank;

[0031] Arrayed flushing nozzles spaced along the flushing manifold and spraying vertically downward;

[0032] The flushing pump group of the flushing assembly includes:

[0033] A second box body fixed on the top of the outer wall of the conical tank, with a second transfer pump arranged inside. The input end and the output end of the second transfer pump are respectively connected to a water input pipe and a water output pipe. The water output pipe penetrates into the conical tank and is communicated with the flushing manifold.

[0034] Preferably, control valves are arranged on the alkaline solution output pipe, the water output pipe and the air inlet pipe.

[0035] Preferably, the spraying mechanism of the alkaline solution supply assembly further includes a compensation spraying manifold arranged on the conical surface of the inner cavity of the conical tank and located above the main spraying manifold;

[0036] Vertical nozzles are distributed on the compensation spraying manifold.

[0037] Preferably, the air inlet pipe includes: a main air inlet pipe extending into the air chamber formed by the first annular baffle and the second annular baffle, and branch pipes are distributed at the end part located inside the air chamber.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] (1) In the present invention, the flue gas carrying carbon dioxide is dissipated through the annular air gap of the stacked reaction tower, and the alkaline solution is sprayed into the stacked reaction tower by the alkaline solution supply component. There are two intersections between the carbon dioxide dissipated from the annular air gap and the alkaline solution, so that the carbon dioxide capture is sufficient.

[0040] (2) By designing the spiral guide plate between the capture container and the stacked reaction tower, the unreacted solution can recover the alkaline solution through the guidance of the spiral guide plate and the slag discharge port, reducing the cost.

[0041] (3) In the present invention, crystals are generated on the surface of the stacked reaction tower, scraped off by the surface cleaning mechanism, rinsed by the rinsing component, and the generated crystals are discharged through the guiding action of the spiral guide plate and the slag discharge port, and separated by an external filtering device, which is convenient for realizing the recycling of water and the sequestration of crystals.

[0042] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 is Figure 1 a sectional view of

[0045] Figure 3 is a schematic external view of the stacked reaction tower and the surface cleaning mechanism of the present invention;

[0046] Figure 4 is Figure 3 a schematic diagram of the inner wall structure of

[0047] Figure 5 is Figure 3 a top view below the air distributor when viewed from below;

[0048] Figure 6 is a schematic partial structure diagram of the alkaline solution supply component and the rinsing component of the present invention;

[0049] Figure 7 is a schematic diagram of the internal structure of the first box body of the present invention;

[0050] Figure 8 is a schematic diagram of the internal structure of the second box body of the present invention.

[0051] In the figure: 1. Collection container; 2. Alkaline solution supply component; 3. Stacked reaction tower; 4. Motor; 5. Surface cleaning mechanism; 6. Flushing component; 7. Inlet pipe; 8. Outlet pipe; 9. Spiral deflector; 10. Slag discharge port; 11. Control valve; 12. Control end;

[0052] 101. Conical tank body; 102. First annular baffle; 103. Second annular baffle;

[0053] 201. First box body; 202. First transfer pump; 203. Alkaline solution input pipe; 204. Alkaline solution output pipe; 205. Main spray header pipe; 206. Directional spray head; 207. Compensation spray header pipe; 208. Vertical spray head;

[0054] 301. Bottom cone; 302. Middle cone; 303. Top cone; 304. Support; 305. Central shaft pipe; 306. Annular air gap; 307. Rotating shaft; 308. Airflow distributor;

[0055] 501. Bottom layer scraper; 502. Stacked scraper;

[0056] 601. Second box body; 602. Second transfer pump; 603. Water input pipe; 604. Water output pipe; 605. Flushing header pipe; 606. Array type flushing spray head;

[0057] 701. Main inlet pipe; 702. Branch pipe. Detailed implementation mode

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. It should be noted that the accompanying drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figure, the relative sizes and proportions of the parts shown in the figure are exaggerated or reduced in size for illustration, and any size is only exemplary and not limiting.

[0059] Embodiment 1:

[0060] Please refer to Figures 1-3, a carbon dioxide capture and storage device, comprising: a capture container 1, having an air outlet pipe 8 at the top and an air inlet pipe 7 at the bottom, and a control end 12 provided on the outer wall of the capture container 1. It further includes: a stacked reaction tower 3, vertically arranged inside the capture container 1, composed of a plurality of conical units stacked together, with an annular air gap 306 formed between the plurality of conical units, and an air flow distributor 308 and a central shaft tube 305 fixedly installed at the bottom. The central shaft tube 305 is fixedly connected to the plurality of conical units through a bracket 304; an alkaline solution supply assembly 2, arranged at the top of the capture container 1, including a delivery pump set and a spraying mechanism annularly distributed at the top of the inner cavity of the capture container 1, and the delivery pump set is communicated with the spraying mechanism; a surface cleaning mechanism 5, arranged inside the capture container 1 and attached to the outer surface of the stacked reaction tower 3; a motor 4, arranged at the bottom of the capture container 1, and the output shaft is drivingly connected to the surface cleaning mechanism 5; a flushing assembly 6, arranged at the top of the capture container 1, including a flushing pump set and a flushing mechanism annularly distributed at the top of the inner cavity of the capture container 1; a spiral guide plate 9, arranged between the capture container 1 and the stacked reaction tower 3 inside the capture container 1, with a slag discharge port 10 connected to the end, and the slag discharge port 10 penetrates to the outside of the capture container 1; the control end 12 is electrically connected to the motor 4, the alkaline solution supply assembly 2, and the flushing assembly 6.

[0061] In the above technical solution, an annular air gap 306 is formed between the plurality of conical units to control the discharge of flue gas. The flue gas enters through the air inlet pipe 7 and the air flow distributor 308 and then rises, escapes through the annular air gap 306, and then rises inside the capture container 1, and is discharged through the air outlet pipe 8 after reacting with the alkaline solution; the alkaline solution supply assembly 2 sprays the alkaline solution onto the upper surface of the stacked reaction tower 3 to react with the flue gas.

[0062] In this process, the flue gas and the alkaline solution intersect twice. One is when the flue gas escapes from the annular air gap 306 and contacts the alkaline solution flowing down from the conical units, generating a reaction and thus forming crystals; the other is after the flue gas escapes from the annular air gap 306, during the rising stage, it contacts the alkaline solution particles sprayed in the inner cavity of the capture container 1, forms a countercurrent, and generates a reaction, and then falls after forming crystals.

[0063] The effects of the two intersections in the above process are as follows: the two intersections can make the carbon dioxide in the flue gas react more fully with the alkaline solution; the annular air gap 306 formed between the conical units guides the flue gas to escape and then flow upward, thus extending the gas path and enhancing the gas residence time; the alkaline solution flows from top to bottom, and the flue gas contacts countercurrently from bottom to top, which conforms to the engineering principle of enhancing gas-liquid mass transfer. Therefore, compared with the prior art, it improves the problem of insufficient reaction between the alkaline solution and carbon dioxide gas due to the lack of a packing layer in the prior art.

[0064] Another effect of the above technical solution is that the crystals formed by the reaction of the alkaline solution and carbon dioxide gas due to the two - stage intersection are located on the outer surface of the stacked reaction tower 3. When it is necessary to remove the crystals, the surface cleaning mechanism 5 is used to scrape the surface crystals, and the stacked reaction tower 3 is rinsed by the rinsing assembly 6. The crystals are flushed out under the guidance of the spiral baffle 9 and the slag discharge port 10, and then filtered through an external filtering device, so that water and crystals can be recovered. Therefore, compared with the prior art, it is convenient to recover the crystals for storage.

[0065] Furthermore, during the process of spraying the alkaline solution and introducing flue gas, when too much alkaline solution is sprayed, it will fall onto the spiral baffle 9 through the stacked reaction tower 3. Through the guiding action of the spiral baffle 9 and the slag discharge port 10, the recycling and reuse of the alkaline solution are realized, reducing the cost of the carbon dioxide capture process.

[0066] Please refer to Figures 2-4 , the multi - stage conical unit of the stacked reaction tower 3 includes a bottom cone 301, at least two intermediate cones 302 and a top cone 303, which are fixed by a central shaft tube 305 and a bracket 304; the gas distributor 308 is provided with a gas guiding opening, forming a continuous gas channel with the annular air gap 306.

[0067] The outer surfaces of the bottom cone 301, the intermediate cones 302 and the top cone 303 are sand - blasted and coated with a polytetrafluoroethylene (PTFE) coating with a thickness of 50 - 100 μm to reduce the liquid film adhesion force, enabling the crystal layer to grow in a flaky structure rather than dense deposition, which is convenient for scraping.

[0068] The inner side surface of the bottom end of the intermediate cone 302 is located outside the top end of the bottom cone 301, and the inner side surface of the bottom end of the top cone 303 is located outside the top end of the intermediate cone 302, so that the annular air gap 306 can ensure the escape of flue gas and at the same time prevent the alkaline solution from flowing through the annular air gap 306 into the interior of the stacked reaction tower 3 when flowing down the stacked reaction tower 3.

[0069] Furthermore, the bottom surface of the intermediate cone 302 is located below the top surface of the bottom cone 301, and the bottom surface of the top cone 303 is located below the top surface of the intermediate cone 302, further preventing the alkaline solution from flowing into the interior of the stacked reaction tower 3 through the annular air gap 306.

[0070] Please refer to Figure 2 and Figure 4, the capture container 1 includes a conical tank body 101, and a first annular baffle 102 and a second annular baffle 103 which are concentrically arranged and fixedly installed at the bottom of the inner cavity, and are located below the air distributor 308 and fixed to the air distributor 308; the air guiding openings provided in the air distributor 308 are located between the first annular baffle 102 and the second annular baffle 103; the air inlet pipe 7 penetrates into the air chamber formed by the first annular baffle 102 and the second annular baffle 103.

[0071] Please refer to Figure 2 and Figure 6 , and Figure 7 , the spraying mechanism of the alkaline solution supply assembly 2 includes a main spraying ring pipe 205, which is arranged along the conical surface at the top of the inner cavity of the conical tank body 101, and is distributed with directional spray nozzles 206. The spraying direction of the directional spray nozzles 206 forms a normal angle with the surface of the top cone 303; the delivery pump group of the alkaline solution supply assembly 2 includes a first box body 201, which is fixedly installed at the top of the outer wall of the conical tank body 101. A first delivery pump 202 is arranged in the first box body 201. The input end and the output end of the first delivery pump 202 are respectively connected with an alkaline solution input pipe 203 and an alkaline solution output pipe 204; the alkaline solution output pipe 204 penetrates into the conical tank body 101 and is communicated with the main spraying ring pipe 205.

[0072] In the above technical solution, the directional spray nozzles 206 spray the alkaline solution along their spraying directions. When spraying, they have an initial velocity along their spraying directions. After spraying, they gradually move downward under the action of their own gravity and contact the outer surface of the laminated reaction tower 3. Part of the alkaline solution reacts with the flue gas during the spraying process, and the other part flows downward on the outer surface of the laminated reaction tower 3 and contacts the gas escaping from the annular air gap 306 to generate crystals.

[0073] Another advantage of the angle design of the directional spray nozzles 206 is that it avoids the sprayed solution from falling onto the inner wall of the conical tank body 101, thereby avoiding the formation of wall flow and improving the utilization rate of the alkaline solution.

[0074] Please refer to Figures 3-5 , the surface cleaning mechanism 5 includes: a bottom scraping plate 501, which is attached to the outer surface of the bottom cone 301; a laminated scraping plate 502, which is synchronously attached to the outer surfaces of the middle cone 302 and the top cone 303; the bottom scraping plate 501 and the laminated scraping plate 502 are fixed; the laminated reaction tower 3 further includes a rotating shaft 307 for transmission, and is arranged in the central shaft tube 305. The bottom of the rotating shaft 307 is connected to the output shaft of the motor 4 through gear transmission, as Figure 5 shown, and the top penetrates out of the top cone 303 and is fixed to the laminated scraping plate 502.

[0075] The bottom scraper 501 is also rotatably connected to the bottom cone 301 to ensure stable installation. At the same time, the bottom scraper 501 and the stacked scraper 502 not only fit the outer surface of the stacked reaction tower 3, but also extend into the annular air gap 306, but do not penetrate through the annular air gap 306 into the interior of the stacked reaction tower 3, ensuring sufficient scraping of crystals, avoiding clogging of the annular air gap 306, and at the same time avoiding scraping the crystals into the interior of the stacked reaction tower 3.

[0076] Furthermore, the bottom scraper 501 and the stacked scraper 502 are made of polyurethane-silicon carbide composite material. The cutting edge in contact with the stacked reaction tower 3 is serrated, and the tooth pitch is 2-3 mm, generating a shearing force on the flaky crystals and reducing the peeling resistance.

[0077] Please refer to Figure 2 and Figure 6 and Figure 8 The flushing mechanism of the flushing assembly 6 includes: a flushing ring pipe 605 arranged on the conical surface of the inner cavity of the conical tank body 101; an array of flushing nozzles 606 spaced along the flushing ring pipe 605 and spraying vertically downward; the flushing pump group of the flushing assembly 6 includes: a second box body 601 fixed on the top of the outer wall of the conical tank body 101, with a second delivery pump 602 arranged inside. The input end and the output end of the second delivery pump 602 are respectively connected to a water input pipe 603 and a water output pipe 604. The water output pipe 604 penetrates into the conical tank body 101 and is communicated with the flushing ring pipe 605.

[0078] In the above technical solution, after the bottom scraper 501 and the stacked scraper 502 scrape the crystals formed on the stacked reaction tower 3, water is flushed through the array of flushing nozzles 606, so that the crystals and water enter the spiral guide plate 9 and are discharged under the guidance of the spiral guide plate 9 and the slag discharge port 10.

[0079] Control valves 11 are provided on the alkaline solution output pipe 204, the water output pipe 604, and the air inlet pipe 7.

[0080] In this application, the alkaline solution is selected as calcium hydroxide solution, which generates calcium carbonate crystals after reacting with carbon dioxide in the flue gas.

[0081] In this application, after the flue gas is pretreated by external equipment for desulfurization, denitrification, dehumidification, etc., it is introduced through the air inlet pipe 7.

[0082] The first delivery pump 202 in this application is a device in the prior art and has corrosion resistance.

[0083] In this application, the annular air gap 306 has multiple layers and is located at different positions in the vertical direction. By designing the cross-sectional area of each layer of the annular air gap 306, the gas preferentially escapes from the middle-layer annular air gap 306. By increasing the flow cross-sectional area of the middle-layer annular air gap 306, the flow resistance of the gas escaping from the middle-layer annular air gap 306 can be reduced.

[0084] Embodiment 2:

[0085] Please refer to Figure 6 , on the basis of Embodiment 1, the spraying mechanism of the alkaline solution supply component 2 further includes a compensation spraying ring pipe 207, which is arranged on the conical surface of the inner cavity of the conical tank body 101 and is located above the main spraying ring pipe 205; vertical nozzles 208 are distributed on the compensation spraying ring pipe 207.

[0086] Since multiple groups of annular air gaps 306 are provided and their heights are inconsistent in the vertical direction, the flue gas escaping from the bottom annular air gap 306 has a longer travel distance, while the flue gas escaping from the top annular air gap 306 has a shorter travel distance. Therefore, a compensation spraying ring pipe 207 is provided to compensate for the flue gas escaping from the top annular air gap 306 to ensure sufficient reaction.

[0087] Embodiment 3:

[0088] Please refer to Figure 4 , on the basis of Embodiment 1 or Embodiment 2, the intake pipe 7 is improved. Among them, the intake pipe 7 includes: a main intake pipe 701, which extends into the air chamber formed by the first annular baffle 102 and the second annular baffle 103, and branch pipes 702 are distributed at the end part located in the air chamber.

[0089] By adopting the above technical solutions, it is ensured that the flue gas is evenly distributed after entering.

[0090] Working principle: During operation, the surface cleaning mechanism 5 and the flushing component 6 are set to work regularly through the control end 12. The flue gas with carbon dioxide is provided through the intake pipe 7. The flue gas enters the stacked reaction tower 3 and escapes through the annular air gap 306. The alkaline solution is sprayed by the alkaline solution supply component 2. After the flue gas escapes from the annular air gap 306, it intersects with the alkaline solution twice, so that the generated crystals are on the outer surface of the stacked reaction tower 3. The excess alkaline solution is discharged through the spiral guide plate 9 and the slag discharge port 10.

[0091] During cleaning, the surface cleaning mechanism 5 is driven by the motor 4 to scrape the crystals on the surface of the stacked reaction tower 3, and is flushed by the flushing component 6, and the crystals are flushed into the spiral guide plate 9 and discharged through the slag discharge port 10.

[0092] All the standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the attached drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0093] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more unless otherwise specifically defined.

[0094] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0095] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0096] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0097] In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0098] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A carbon dioxide capture and storage device, comprising a capture container (1) with an air outlet pipe (8) provided at the top and an air inlet pipe (7) provided at the bottom, and a control end (12) provided on the outer wall of the capture container (1), characterized in that: Further comprising: A stacked reaction tower (3), vertically arranged inside the trapping container (1), composed of a stack of multiple conical units, an annular air gap (306) is formed between the multiple conical units, and an air flow distributor (308) and a central shaft tube (305) are fixedly installed at the bottom, and the central shaft tube (305) is fixed to the multiple conical units through a bracket (304); An alkaline solution supply assembly (2), arranged at the top of the trapping container (1), comprising a delivery pump group and a spraying mechanism annularly distributed at the top of the inner cavity of the trapping container (1), and the delivery pump group is communicated with the spraying mechanism; A surface cleaning mechanism (5), arranged inside the trapping container (1) and attached to the outer surface of the stacked reaction tower (3); A motor (4), arranged at the bottom of the trapping container (1), and the output shaft is in transmission connection with the surface cleaning mechanism (5); A flushing assembly (6), arranged at the top of the trapping container (1), comprising a flushing pump group and a flushing mechanism annularly distributed at the top of the inner cavity of the trapping container (1); A spiral guide plate (9), arranged between the trapping container (1) and the stacked reaction tower (3) inside, with a slag discharge port (10) connected to the end, and the slag discharge port (10) penetrates to the outside of the trapping container (1); The control end (12) is electrically connected to the motor (4), the alkaline solution supply assembly (2), and the flushing assembly (6).

2. The carbon dioxide capture and storage device according to claim 1, characterized in that: The multiple conical units of the stacked reaction tower (3) include a bottom cone (301), at least two intermediate cones (302), and a top cone (303), and are fixed through the central shaft tube (305) and the bracket (304); The air flow distributor (308) is provided with air guiding openings, forming a continuous gas channel with the annular air gap (306).

3. The carbon dioxide capture and storage device according to claim 2, wherein: The trapping container (1) includes a conical tank body (101), and a first annular baffle (102) and a second annular baffle (103) which are concentrically arranged and fixedly installed at the bottom of the inner cavity, and are located below the air flow distributor (308) and fixed to the air flow distributor (308); The air guiding openings provided on the air flow distributor (308) are located between the first annular baffle (102) and the second annular baffle (103); The intake pipe (7) penetrates into the air chamber formed by the first annular baffle (102) and the second annular baffle (103).

4. A carbon dioxide capture and storage device according to claim 3, characterized in that: The spraying mechanism of the alkaline solution supply assembly (2) includes a main spraying ring pipe (205), arranged along the conical surface at the top of the inner cavity of the conical tank body (101), and directional spray nozzles (206) are distributed, and the spraying direction of the directional spray nozzles (206) forms a normal angle with the surface of the top cone (303); The delivery pump group of the alkaline solution supply assembly (2) includes a first box body (201), fixedly installed on the outer wall top of the conical tank body (101), a first delivery pump (202) is arranged inside the first box body (201), and the input end and the output end of the first delivery pump (202) are respectively connected with an alkaline solution input pipe (203) and an alkaline solution output pipe (204); The alkaline solution output pipe (204) penetrates into the conical tank body (101) and is communicated with the main spray header pipe (205).

5. The carbon dioxide capture and storage device according to claim 2, characterized in that: The surface cleaning mechanism (5) includes: A bottom layer scraper (501) attached to the outer surface of the bottom cone (301); A stacked scraper (502) synchronously attached to the outer surfaces of the middle cone (302) and the top cone (303); The bottom layer scraper (501) and the stacked scraper (502) are fixed; The stacked reaction tower (3) further includes a rotating shaft (307) for transmission, which is arranged in the central shaft pipe (305). The bottom of the rotating shaft (307) is connected to the output shaft of the motor (4) through gear transmission, and the top penetrates out of the top cone (303) and is fixed to the stacked scraper (502).

6. The carbon dioxide capture and storage device according to claim 3, characterized in that: The flushing mechanism of the flushing assembly (6) includes: A flushing header pipe (605) arranged on the conical surface of the inner cavity of the conical tank body (101); An array of flushing nozzles (606) spaced along the flushing header pipe (605) and spraying vertically downward; The flushing pump group of the flushing assembly (6) includes: A second box body (601) fixed to the top of the outer wall of the conical tank body (101), with a second delivery pump (602) arranged inside. The input end and the output end of the second delivery pump (602) are respectively connected to a water input pipe (603) and a water output pipe (604). The water output pipe (604) penetrates into the conical tank body (101) and is communicated with the flushing header pipe (605).

7. The carbon dioxide capture and storage device according to claim 6, characterized in that: Control valves (11) are arranged on the alkaline solution output pipe (204), the water output pipe (604) and the air inlet pipe (7).

8. The carbon dioxide capture and storage device according to claim 4, characterized in that: The spraying mechanism of the alkaline solution supply assembly (2) further includes a compensation spray header pipe (207) arranged on the conical surface of the inner cavity of the conical tank body (101) and located above the main spray header pipe (205); Vertical nozzles (208) are distributed on the compensation spray header pipe (207).

9. A carbon dioxide capture and storage device according to claim 3, characterized in that: The air inlet pipe (7) includes: a main air inlet pipe (701) extending into the air chamber formed by the first annular baffle (102) and the second annular baffle (103), and branch pipes (702) are distributed at the end portion located in the air chamber.

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