Solid waste biodegradation and carbon capture device

By designing a solid waste biodegradation and carbon capture device, which utilizes microorganisms to degrade solid waste and capture carbon dioxide, the environmental pollution and carbon emission problems of traditional treatment methods are solved, achieving efficient resource utilization and cost reduction.

CN121892479APending Publication Date: 2026-04-21XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD
Filing Date
2025-11-04
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Traditional solid waste treatment methods such as landfill and incineration occupy land resources, cause environmental pollution and increase carbon emissions. Existing solid waste biodegradation and carbon capture technologies are insufficient in terms of efficiency and system integration.

Method used

Design a solid waste biodegradation and carbon capture device, including a degradation tower and a capture tower, which utilizes microorganisms to degrade solid waste and captures carbon dioxide through an absorbent. The device is equipped with components such as stirring blades, atomizing nozzles, filters and transparent observation windows to improve efficiency and stability.

Benefits of technology

It reduces the need for solid waste landfill and incineration, lowers environmental pollution and carbon dioxide emissions, improves resource utilization efficiency, reduces treatment costs, and uses degradation gases as energy and residues as raw materials or land improvement materials.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a solid waste biodegradation and carbon capture device which comprises a degradation tower and a capture tower, the degradation tower is provided with a solid waste inlet, a solid waste outlet and a gas outlet, the capture tower is provided with a gas inlet, a gas outlet, an absorbent inlet and an absorbent outlet, the gas inlet is communicated with the gas outlet, and the gas outlet is communicated with the absorbent inlet. The absorbent inlet is used for conveying an absorbent into the trapping tower so as to absorb carbon dioxide in degraded gas, the absorbent absorbing the carbon dioxide is discharged through the absorbent outlet, and the degraded gas absorbing the carbon dioxide is discharged through the exhaust port. According to the invention, the landfill and incineration requirements of solid wastes are reduced through biodegradation, and the environmental pollution is reduced. And through a carbon capture technology, the emission of carbon dioxide is reduced, and the global climate change can be slowed down. Combustible gas such as methane in the degraded gas can be collected and used as energy; the residue can be used as a raw material or a land improvement material. And wastes are converted into useful products, so that the overall utilization efficiency of resources is improved.
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Description

Technical Field

[0001] This invention relates to the field of environmental protection and resource recycling technology, specifically to a solid waste biodegradation and carbon capture device. Background Technology

[0002] With rapid socio-economic development, the treatment and resource utilization of solid waste has become an increasingly important environmental issue. Traditional solid waste treatment methods, such as landfill and incineration, not only occupy large amounts of land resources but also potentially cause soil and air pollution, while increasing carbon emissions and exacerbating global climate change. In recent years, solid waste biodegradation and carbon capture technologies have gradually become a research hotspot, but related technologies still have significant shortcomings in terms of biodegradation efficiency, carbon capture effect, and system integration. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a solid waste biodegradation and carbon capture device.

[0005] The solid waste biodegradation and carbon capture device of this invention includes a degradation tower and a capture tower. The degradation tower has a solid waste inlet, a solid waste outlet, and a gas outlet. The solid waste inlet is used for solid waste to enter the degradation tower for biodegradation. The degraded solid waste is discharged through the solid waste outlet, and the degradation gas generated during degradation is discharged through the gas outlet. The capture tower has an air inlet, an air outlet, an absorbent inlet, and an absorbent outlet. The air inlet is connected to the air outlet to receive the degradation gas discharged from the degradation tower. The absorbent inlet is used to deliver absorbent into the capture tower to absorb carbon dioxide in the degradation gas. The absorbent after absorbing carbon dioxide is discharged through the absorbent outlet, and the degradation gas after absorbing carbon dioxide is discharged through the air outlet.

[0006] In some embodiments, the solid waste biodegradation and carbon capture device of the present invention further includes a motor, a stirring shaft, and stirring blades. The motor is located outside the degradation tower, the stirring shaft passes through the degradation tower in a vertical direction, the first end of the stirring shaft is connected to the motor, the second end of the stirring shaft is located inside the degradation tower, and the stirring blades are located inside the degradation tower and connected to the stirring shaft.

[0007] In some embodiments, the stirring blades are multiple and spaced apart along the axial direction of the stirring shaft, and the stirring blades are provided with multiple spaced through holes.

[0008] In some embodiments, the bottom of the degradation tower is provided with a conical section, the cross-sectional area of ​​which gradually decreases from top to bottom, the solid waste outlet is located at the bottom of the conical section, the inner wall of the conical section is provided with an anti-stick coating, and the outer wall of the degradation tower is provided with a vibration motor.

[0009] In some embodiments, the solid waste biodegradation and carbon capture device of the present invention further includes a water storage tank, a water pump, and an atomizing nozzle. The water storage tank is connected to the atomizing nozzle through the water pump. The atomizing nozzle is located inside the degradation tower and is used to spray atomized water onto the solid waste inside the degradation tower. A flow regulating valve is provided between the water pump and the atomizing nozzle.

[0010] In some embodiments, the solid waste biodegradation and carbon capture device of the present invention further includes a gas supply pipe and a filter screen, wherein a first end of the gas supply pipe is connected to the gas outlet, a second end of the gas supply pipe is connected to the gas inlet, and the filter screen is disposed inside the gas supply pipe.

[0011] In some embodiments, the solid waste biodegradation and carbon capture device of the present invention further includes a sealing ring, the sealing ring surrounding the edge of the filter screen, and the outer wall surface of the sealing ring sealingly engaging with the inner wall surface of the gas delivery pipe.

[0012] In some embodiments, the solid waste biodegradation and carbon capture device of the present invention further includes a push-pull rod and a return spring. The wall of the gas supply pipe is provided with a sliding groove extending along its axial direction. The first end of the push-pull rod is located inside the gas supply pipe and connected to the filter screen. The second end of the push-pull rod extends out of the gas supply pipe through the sliding groove. The push-pull rod and the sliding groove are slidably engaged. The return spring is located inside the sliding groove. The first end of the return spring is connected to the push-pull rod, and the second end of the return spring is between the groove sidewall and the sliding groove.

[0013] In some embodiments, the collection tower is provided with a plurality of packing layers arranged at intervals in a vertical direction. The surface of the packing layers has micropores with a pore size of 0.1 mm to 0.5 mm. The collection tower is also provided with a spray head that communicates with the absorbent inlet. The absorbent inlet is connected to the absorbent outlet through a circulation pump. The spray head is used to spray the absorbent onto the packing layers to absorb carbon dioxide in the gas.

[0014] In some embodiments, a transparent observation window is provided on the side wall of the trapping tower.

[0015] The solid waste biodegradation and carbon capture device of this invention reduces the need for landfill and incineration of solid waste through biodegradation, thereby reducing environmental pollution. Carbon capture technology reduces carbon dioxide emissions, contributing to mitigating global climate change. Combustible gases such as methane in the degradation gas can be collected and used as energy; the residue can be used as raw materials or land amendment materials. Converting waste into useful products improves the overall efficiency of resource utilization. Compared to traditional landfill and incineration, biodegradation and carbon capture technologies reduce the cost of solid waste treatment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the solid waste biodegradation and carbon capture device according to an embodiment of the present invention.

[0017] Figure 2 This is a cross-sectional view of the solid waste biodegradation and carbon capture device according to an embodiment of the present invention.

[0018] Figure 3 This is a partially enlarged view of the solid waste biodegradation and carbon capture device according to an embodiment of the present invention.

[0019] Figure label: 100. Solid waste biodegradation and carbon capture device; 1. Degradation tower; 101. Conical section; 2. Capture tower; 3. Motor; 4. Stirring shaft; 5. Stirring blades; 501. Through hole; 6. Vibrating motor; 7. Gas supply pipe; 701. Slide chute; 8. Filter screen; 9. Sealing ring; 10. Push-pull rod; 11. Packing layer; 12. Spray head; 13. Circulation pump. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] like Figures 1 to 3 As shown, the solid waste biodegradation and carbon capture device 100 of this embodiment includes a degradation tower 1 and a capture tower 2. The degradation tower 1 has a solid waste inlet, a solid waste outlet, and a gas outlet. The solid waste inlet is used for solid waste to enter the degradation tower 1 for biodegradation. The degraded solid waste is discharged through the solid waste outlet, and the degradation gas generated during degradation is discharged through the gas outlet. The capture tower 2 has a gas inlet, a gas outlet, an absorbent inlet, and an absorbent outlet. The gas inlet and the gas outlet are connected to receive the degradation gas discharged from the degradation tower 1. The absorbent inlet is used to supply absorbent into the capture tower 2 to absorb carbon dioxide in the degradation gas. The absorbent after absorbing carbon dioxide is discharged through the absorbent outlet, and the degradation gas after absorbing carbon dioxide is discharged through the gas outlet.

[0022] In use, the solid waste biodegradation and carbon capture device 100 of this invention involves feeding solid waste into the degradation tower 1 through the solid waste inlet. Inside the degradation tower 1, the solid waste undergoes biodegradation under the action of microorganisms. The microorganisms convert organic solid waste into degradation gas (typically containing gases such as carbon dioxide and methane) and residues through metabolism. The degraded solid waste is discharged through the solid waste outlet. These residues typically have a low organic matter content and can be used as fertilizer or for other industrial purposes. The degradation gas generated by the degradation tower 1 is discharged through the outlet and enters the inlet of the capture tower 2. In the capture tower 2, the degradation gas comes into contact with a circulating absorbent. The absorbent selectively absorbs carbon dioxide from the gas. The absorbent that has absorbed carbon dioxide is discharged through the absorbent outlet and can then be regenerated or treated to recover carbon dioxide. The degradation gas, with carbon dioxide removed, is discharged from the exhaust port into the atmosphere or further utilized.

[0023] The solid waste biodegradation and carbon capture device 100 of this invention reduces the need for landfill and incineration of solid waste through biodegradation, thereby reducing environmental pollution. Through carbon capture technology, carbon dioxide emissions are reduced, contributing to mitigating global climate change. Combustible gases such as methane in the degradation gas can be collected and used as energy; the residue can be used as raw materials or land amendment materials. Converting waste into useful products improves the overall efficiency of resource utilization. Compared to traditional landfill and incineration, biodegradation and carbon capture technologies reduce the cost of solid waste treatment.

[0024] In some embodiments, the solid waste biodegradation and carbon capture device 100 of the present invention further includes a motor 3, a stirring shaft 4, and stirring blades 5. The motor 3 is located outside the degradation tower 1, the stirring shaft 4 is vertically inserted into the degradation tower 1, the first end of the stirring shaft 4 is connected to the motor 3, the second end of the stirring shaft 4 is located inside the degradation tower 1, and the stirring blades 5 are located inside the degradation tower 1 and connected to the stirring shaft 4.

[0025] The motor 3 is located outside the degradation tower 1 and is connected to the interior of the tower via the stirring shaft 4. The motor 3 provides power to the stirring shaft 4, ensuring its continuous rotation, which in turn drives the stirring blades 5 to agitate the material. The rotation of the stirring blades 5 promotes the mixing of solid waste and microorganisms, improving biodegradation efficiency. Stirring also increases the contact between microorganisms and nutrient sources, enhancing their activity. During biodegradation, precipitates may form; the rotation of the stirring blades 5 helps prevent their formation, ensuring a uniform distribution of substances within the degradation tower 1.

[0026] Therefore, the addition of stirring blades 5 promotes full contact between solid waste and microorganisms, accelerating the biodegradation process. The stirring action also helps maintain the structure and diversity of the microbial community, thereby improving the efficiency and stability of biodegradation. Stirring reduces stratification of solid waste and microorganisms within the degradation tower 1, ensuring the uniformity of the degradation process. It also prevents solid waste from accumulating within the degradation tower 1, reducing the problems of uneven degradation or localized over-degradation caused by accumulation.

[0027] In some embodiments, there are multiple stirring blades 5 arranged at intervals along the axial direction of the stirring shaft 4, and the stirring blades 5 are provided with multiple spaced through holes 501.

[0028] Multiple stirring blades 5 are arranged at intervals along the axial direction of the stirring shaft 4, ensuring that all materials within the degradation tower 1 are subjected to stirring. Multiple stirring blades 5 increase the intensity and range of stirring, improving the mixing efficiency between solid waste and microorganisms.

[0029] The stirring blades 5 are provided with multiple spaced through holes 501, which can increase fluid turbulence, making the mixing more uniform and helping to improve biodegradation efficiency. The through holes 501 can reduce the resistance during the stirring process, thereby reducing the energy consumption required by the motor 3. The presence of the through holes 501 facilitates the release and exchange of gases (such as carbon dioxide and other volatile organic compounds produced by degradation), improving the mass transfer efficiency of the system.

[0030] The spaced arrangement of multiple stirring blades 5 ensures more uniform stirring, more thorough mixing of solid waste and microorganisms, and improves the speed and quality of biodegradation. The presence of through-holes 501 promotes fluid flow within the degradation tower 1, enhances the mass transfer process between solid waste, microorganisms, and degradation gas, and further improves the efficiency of biodegradation. By improving mixing and mass transfer efficiency, the performance of the entire solid waste biodegradation and carbon capture system is enhanced, thereby reducing solid waste treatment costs and environmental pollution.

[0031] In some embodiments, the bottom of the degradation tower 1 is provided with a conical section 101, the cross-sectional area of ​​the conical section 101 gradually decreases from top to bottom, the solid waste outlet is provided at the bottom of the conical section 101, the inner wall of the conical section 101 is provided with an anti-stick coating, and the outer wall of the degradation tower 1 is provided with a vibration motor 6.

[0032] The cross-sectional area of ​​the conical section 101 gradually decreases from top to bottom, forming a conical structure. This conical structure facilitates the natural flow of materials under gravity, reducing material accumulation at the bottom of the tower. A solid waste outlet is located at the bottom of the conical section 101, making it easier for biodegraded solid waste to be discharged from the tower. An anti-stick coating reduces material adhesion to the inner wall of the conical section 101, preventing material accumulation and blockage caused by adhesion. The vibration generated by the vibrating motor 6 helps materials to be smoothly discharged from the solid waste outlet at the bottom of the tower, especially for materials that are highly viscous or difficult to flow. The vibration also reduces blockage and adhesion problems within the tower, maintaining the flowability of the material inside.

[0033] In some embodiments, the solid waste biodegradation and carbon capture device 100 of the present invention further includes a water storage tank, a water pump and an atomizing nozzle. The water storage tank is connected to the atomizing nozzle through the water pump. The atomizing nozzle is located inside the degradation tower 1 and is used to spray atomized water onto the solid waste inside the degradation tower 1. A flow regulating valve is provided between the water pump and the atomizing nozzle.

[0034] The water storage tank stores water for the atomizing nozzles, ensuring sufficient water for spraying. The water pump delivers water from the tank to the nozzles, providing the necessary pressure for atomization. The nozzles atomize the water into fine droplets, spraying them evenly onto the solid waste within degradation tower 1, increasing its humidity. This increased humidity promotes microbial growth and the biodegradation process. The atomized water also absorbs some heat during spraying, lowering the temperature within degradation tower 1 and providing a suitable environment for microbial growth. A flow control valve, located between the pump and the nozzles, regulates the water flow to ensure the nozzles spray the appropriate amount of atomized water as needed.

[0035] In some embodiments, the solid waste biodegradation and carbon capture device 100 of the present invention further includes a gas supply pipe 7 and a filter screen 8. The first end of the gas supply pipe 7 is connected to the gas outlet, the second end of the gas supply pipe 7 is connected to the gas inlet, and the filter screen 8 is disposed inside the gas supply pipe 7.

[0036] Gas pipeline 7 serves as a gas transmission channel, conveying the degraded gas produced by degradation tower 1 to collection tower 2 for carbon dioxide capture. Filter screen 8 captures and filters out particulate matter and impurities in the degraded gas, preventing these particles from entering collection tower 2 and thus protecting the absorbent and equipment within it. Removing particulate matter reduces contamination of the absorbent in collection tower 2, improving carbon dioxide capture efficiency. Reduced wear and contamination from particulate matter also helps extend the service life of equipment such as gas pipeline 7 and collection tower 2.

[0037] In some embodiments, the solid waste biodegradation and carbon capture device 100 of the present invention further includes a sealing ring 9, which surrounds the edge of the filter screen 8, and the outer wall surface of the sealing ring 9 is sealed to the inner wall surface of the gas supply pipe 7.

[0038] The sealing ring 9, by tightly fitting the inner wall of the gas delivery pipe 7, ensures that gas does not leak into the external environment during transmission. The protective function of the sealing ring 9 prevents damage to the filter screen 8 during installation or operation. The sealing ring 9 helps maintain the gas pressure within the gas delivery pipe 7, ensuring that gas can be effectively delivered from the degradation tower 1 to the collection tower 2.

[0039] The addition of sealing ring 9 significantly improves the sealing performance during gas transmission, preventing gas leakage and ensuring the safe operation of the system. The protective function of sealing ring 9 on filter 8 extends its service life, reducing maintenance and replacement frequency. By preventing gas leakage, sealing ring 9 helps maintain gas pressure within the system, thereby optimizing overall system performance. Reducing gas leakage and damage to filter 8 lowers system maintenance costs and operational risks.

[0040] In some embodiments, the solid waste biodegradation and carbon capture device 100 of the present invention further includes a push-pull rod 10 and a return spring. The wall of the gas supply pipe 7 is provided with a groove 701 extending axially therefrom. The first end of the push-pull rod 10 is located inside the gas supply pipe 7 and connected to the filter screen 8, while the second end of the push-pull rod 10 extends out of the gas supply pipe 7 through the groove 701. The push-pull rod 10 and the groove 701 are slidably engaged. The return spring is located inside the groove 701, with its first end connected to the push-pull rod 10 and its second end resting against the side wall of the groove 701.

[0041] The push-pull rod 10 can be moved manually or automatically to push or pull the filter screen 8 to remove accumulated dust and particles. Regular cleaning of the filter screen 8 maintains its filtration efficiency and extends its service life. The slide groove 701 provides a guide channel for the push-pull rod 10, ensuring smooth movement. After the push-pull rod 10 moves, a return spring pulls it back to its original position for the next cleaning. The spring force of the return spring helps maintain the balance of the push-pull rod 10 and the filter screen 8 under normal operating conditions.

[0042] Regularly cleaning filter 8 maintains its filtration efficiency and prevents clogging that could reduce its effectiveness. Cleaning and maintaining filter 8 extends its lifespan and reduces replacement frequency and costs. Keeping filter 8 clean ensures stability and efficiency during gas transmission, optimizing overall system performance. A simple cleaning and maintenance mechanism reduces system maintenance costs and workload.

[0043] In some embodiments, the collection tower 2 is provided with a plurality of packing layers 11 arranged at intervals along the vertical direction. The surface of the packing layers has micropores with a pore size of 0.1 mm to 0.5 mm. The collection tower 2 is also provided with a spray head 12 communicating with the absorbent inlet. The absorbent inlet is connected to the absorbent outlet through a circulation pump 13. The spray head 12 is used to spray the absorbent onto the packing layers 11 to facilitate the absorption of carbon dioxide in the gas.

[0044] The packing layer 11 provides a large surface area, increasing the contact area between the gas and the absorbent, which is beneficial for carbon dioxide absorption. The presence of micropores promotes the mass transfer process between the gas and the absorbent, improving the carbon dioxide capture efficiency. The spray head 12 is responsible for uniformly spraying the absorbent onto the packing layer 11, ensuring sufficient contact between the absorbent and the gas. The spray head 12 can be configured to control the amount of absorbent sprayed to adapt to different operating conditions. The circulating pump 13 is responsible for transporting the absorbent from the absorbent outlet to the absorbent inlet, enabling the recycling of the absorbent.

[0045] The packing layer 11 and the presence of micropores significantly increase the contact area and mass transfer efficiency between the gas and the absorbent, thereby improving the carbon dioxide capture efficiency. The combined use of the spray head 12 and the circulating pump 13 ensures uniform spraying and circulation of the absorbent, improving its utilization efficiency. The optimized arrangement of the packing layer 11 and the spray head 12 helps maintain stable operating conditions within the capture tower 2, improving system stability. By improving both carbon dioxide capture efficiency and absorbent utilization efficiency, the system's operating costs are reduced.

[0046] In some embodiments, a transparent observation window is provided on the side wall of the collection tower 2.

[0047] Operators can directly observe the internal operation of the trapping tower 2 through the observation window, including gas flow, absorbent spraying, and the condition of the packing layer 11. The observation window allows for real-time monitoring of the trapping tower 2's performance, enabling timely detection and resolution of potential problems such as blockages and leaks. The transparent observation window reduces the number of times operators need to enter the trapping tower 2 for inspection, lowering operational risks. Operators can monitor the operation of the trapping tower 2 at any time through the observation window, facilitating routine maintenance and emergency handling. The transparent observation window increases the system's transparency, helping researchers observe and analyze the internal operating mechanisms of the trapping tower 2, providing a basis for system optimization and improvement.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A solid waste biodegradation and carbon capture device, characterized in that, include: The degradation tower (1) has a solid waste inlet, a solid waste outlet and a gas outlet. The solid waste inlet is used for solid waste to enter the degradation tower (1) for biodegradation. The degraded solid waste is discharged through the solid waste outlet and the degradation gas generated by the degradation is discharged through the gas outlet. The trapping tower (2) has an air inlet, an air outlet, an absorbent inlet, and an absorbent outlet. The air inlet is connected to the air outlet to receive the degradation gas discharged from the degradation tower (1). The absorbent inlet is used to deliver absorbent into the trapping tower (2) to absorb carbon dioxide in the degradation gas. The absorbent after absorbing carbon dioxide is discharged through the absorbent outlet, and the degradation gas after absorbing carbon dioxide is discharged through the air outlet.

2. The solid waste biodegradation and carbon capture device according to claim 1, characterized in that, It also includes a motor (3), a stirring shaft (4) and stirring blades (5). The motor (3) is located outside the degradation tower (1). The stirring shaft (4) passes through the degradation tower (1) in a vertical direction. The first end of the stirring shaft (4) is connected to the motor (3). The second end of the stirring shaft (4) is located inside the degradation tower (1). The stirring blades (5) are located inside the degradation tower (1) and connected to the stirring shaft (4).

3. The solid waste biodegradation and carbon capture device according to claim 2, characterized in that, The stirring blades (5) are multiple and arranged at intervals along the axial direction of the stirring shaft (4), and the stirring blades (5) are provided with multiple through holes (501) arranged at intervals.

4. The solid waste biodegradation and carbon capture device according to claim 1, characterized in that, The bottom of the degradation tower (1) is provided with a conical section (101), the cross-sectional area of ​​the conical section (101) gradually decreases from top to bottom, the solid waste outlet is located at the bottom of the conical section (101), the inner wall of the conical section (101) is provided with an anti-stick coating, and the outer wall of the degradation tower (1) is provided with a vibration motor (6).

5. The solid waste biodegradation and carbon capture device according to claim 1, characterized in that, It also includes a water storage tank, a water pump and an atomizing nozzle. The water storage tank is connected to the atomizing nozzle through the water pump. The atomizing nozzle is located inside the degradation tower (1) and is used to spray atomized water onto the solid waste inside the degradation tower (1). A flow regulating valve is provided between the water pump and the atomizing nozzle.

6. The solid waste biodegradation and carbon capture device according to claim 1, characterized in that, It also includes an air supply pipe (7) and a filter screen (8). The first end of the air supply pipe (7) is connected to the air outlet, the second end of the air supply pipe (7) is connected to the air inlet, and the filter screen (8) is disposed inside the air supply pipe (7).

7. The solid waste biodegradation and carbon capture device according to claim 6, characterized in that, It also includes a sealing ring (9) that surrounds the edge of the filter screen (8) and the outer wall surface of the sealing ring (9) is in sealing fit with the inner wall surface of the air supply pipe (7).

8. The solid waste biodegradation and carbon capture device according to claim 6, characterized in that, It also includes a push-pull rod (10) and a return spring. The pipe wall of the gas supply pipe (7) is provided with a sliding groove (701) extending along its axial direction. The first end of the push-pull rod (10) is located inside the gas supply pipe (7) and connected to the filter screen (8). The second end of the push-pull rod (10) extends out of the gas supply pipe (7) through the sliding groove (701). The push-pull rod (10) and the sliding groove (701) are slidably engaged. The return spring is located inside the sliding groove (701). The first end of the return spring is connected to the push-pull rod (10), and the second end of the return spring is between the groove sidewall of the sliding groove (701).

9. The solid waste biodegradation and carbon capture device according to claim 1, characterized in that, The trapping tower (2) is provided with multiple packing layers (11) arranged at intervals along the vertical direction. The surface of the packing layer has micropores with a pore diameter of 0.1 mm to 0.5 mm. The trapping tower (2) is also provided with a spray head (12) connected to the absorbent inlet. The absorbent inlet is connected to the absorbent outlet through a circulation pump (13). The spray head (12) is used to spray the absorbent onto the packing layer (11) to absorb carbon dioxide in the gas.

10. The solid waste biodegradation and carbon capture device according to claim 1, characterized in that, The trapping tower (2) has a transparent observation window on its side wall.

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