Solar photo-thermal driven air carbon capture integrated device

Abstract

The invention relates to the technical field of air purification equipment, and particularly discloses a solar photo-thermal driven air carbon capture integrated device which comprises an air inducing device, an adsorption device, a thermal management assembly and a control device. The adsorption device is communicated with the air inducing device; the heat management assembly is used for providing heat energy for desorption of the adsorbent and managing heat flow; the control device is used for controlling the air inducing device and the heat management assembly. The heat management assembly comprises a solar heat collection plate and a phase change material layer, and the phase change material layer is fixedly arranged on the back face of the solar heat collection plate. The solar heat collection plate is arranged on the periphery of the adsorption device, a vacuum heat insulation layer is arranged between the solar heat collection plate and the adsorption device, and the phase change material layer is located in the vacuum heat insulation layer. The solar photo-thermal driven air carbon capture integrated device does not need to be externally connected with a heat source and a condensation system, only depends on the air inducing device to drive airflow, realizes low-energy-consumption and continuous circulating capture of carbon dioxide, and is particularly suitable for distributed and miniaturized carbon capture application scenes.

Description

Technical Field

[0001] This invention relates to the field of air purification equipment technology, specifically to a solar thermal driven integrated air carbon capture device. Background Technology

[0002] With the acceleration of global modernization, the problem of climate change caused by greenhouse gas emissions is becoming increasingly serious. Developing cost-effective carbon dioxide capture, utilization and storage technologies has become a common focus of academia and industry.

[0003] Against the backdrop of the ongoing global push for "dual carbon" goals, direct air carbon capture (DAC) is increasingly demonstrating its strategic significance as a key technological pathway to achieving negative emissions. Among various DAC technologies, solid-state adsorption (SSA) shows promising application prospects due to its operational flexibility and relatively low energy consumption. Currently, research and development in this field focuses on two main aspects: first, developing novel adsorbents that combine high capacity, high selectivity, and excellent stability; and second, finding sustainable low-grade heat sources to drive the desorption and regeneration of adsorbents.

[0004] Due to the sustainability and environmental friendliness of solar thermal energy, combining it with desorption condenser (DAC) is considered a highly promising technological solution. However, existing solar-driven DAC systems have significant limitations: First, the intermittent nature of solar radiation leads to an unstable heat source supply, failing to meet the stable thermal energy demand for continuous or on-demand desorption; second, traditional solar thermal collection systems and adsorption units have insufficient coupling, resulting in low overall system integration. Solar thermal collection, thermal energy storage, and adsorption units are often independent of each other and generally rely on external condensation and auxiliary heat sources, which not only increases the complexity and energy consumption of the system but also restricts its overall energy efficiency and reliability.

[0005] In summary, there is an urgent need in this field for a highly integrated, all-in-one innovative solution to overcome the aforementioned technical bottlenecks. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated solar thermal-driven air carbon capture device that highly integrates a high-performance composite adsorbent with a stable and adaptive solar thermal management strategy, thereby achieving low-energy consumption, high-efficiency, and continuously operating direct air carbon capture in real-world environments, providing a new path for promoting the practical application of distributed DAC technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A solar thermal-driven integrated air carbon capture device includes an exhaust fan, an adsorption unit, a thermal management component, and a control unit.

[0008] The adsorption device is connected to the exhaust fan, and the adsorption device has an adsorbent for adsorbing carbon dioxide.

[0009] The thermal management component is used to provide thermal energy for the desorption of the adsorbent and to manage the heat flow.

[0010] The exhaust fan is electrically connected to the control device, which is used to control the exhaust fan and the thermal management components.

[0011] The thermal management component includes a solar collector panel and a phase change material layer, the phase change material layer being fixedly disposed on the back side of the solar collector panel.

[0012] The solar collector is disposed on the outer periphery of the adsorption device, and a vacuum insulation layer is disposed between the solar collector and the adsorption device, with the phase change material layer located inside the vacuum insulation layer.

[0013] The solar thermal-driven integrated air carbon capture device provided in at least one embodiment of this disclosure further includes a detection component.

[0014] The detection component is electrically connected to the control device, which is also used to display the data detected by the detection component.

[0015] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, the adsorption device includes a ventilation duct and a housing.

[0016] The ventilation duct and the housing are fixedly connected, the ventilation duct and the housing form a ring structure, and a receiving cavity is formed between the ventilation duct and the housing, the receiving cavity being used to contain the adsorbent.

[0017] The top of the housing has multiple ventilation holes, and the wall of the ventilation duct has multiple air vents.

[0018] Both the ventilation hole and the air vent are connected to the receiving cavity.

[0019] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, the thermal management component further includes a gas pipeline and an air pump.

[0020] One end of the gas pipe is connected to the gas pump, and the other end of the gas pipe is connected to the vacuum insulation layer. The gas pump is used to regulate the gas pressure inside the vacuum insulation layer.

[0021] The air pump is electrically connected to the control device.

[0022] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, the air extraction device includes a housing, a base, and a fan.

[0023] The housing is provided with an air inlet, and the base is provided with an air outlet.

[0024] The fan is fixedly disposed inside the air inlet, and the top of the ventilation duct and the housing are both located below the air outlet.

[0025] The base is fixedly connected to the housing, the air outlet is connected to the ventilation duct, and the ventilation duct and the housing are both sandwiched between the housing and the base.

[0026] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, the housing is provided with an assembly port, and the solar collector is fixedly disposed in the assembly port.

[0027] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, the adsorbent is a solid adsorbent.

[0028] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, the detection component includes a temperature sensor, a pressure sensor, and a CO2 concentration sensor.

[0029] Both the temperature sensor and the CO2 concentration sensor are located inside the containment cavity.

[0030] The pressure sensor is installed inside the vacuum insulation layer.

[0031] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, a mounting platform is provided above the housing, and the mounting platform is fixedly connected to the housing.

[0032] The control device has a display, which is fixedly mounted on the top surface of the mounting platform.

[0033] In at least one embodiment of the solar thermal-driven integrated air carbon capture device provided in this disclosure, the solid adsorbent is one of MOFs, zeolite, or solid amine.

[0034] The beneficial effects of this invention are as follows: It adopts a thermal management strategy that combines a phase change material layer with a controllable vacuum insulation layer to achieve precise switching between heat preservation during adsorption and efficient heating during desorption, which significantly improves the system's environmental adaptability and energy utilization efficiency. By highly integrating the adsorbent with a stable and adaptive solar thermal management strategy, direct air capture with low energy consumption, high efficiency, and continuous operation is achieved. This invention integrates adsorption, desorption, thermal management, and control. Its compact structure and multifunctional properties facilitate modular deployment and mobile applications, making it particularly suitable for distributed, miniaturized carbon capture scenarios. It has low maintenance costs, high reliability, and the main moving parts are only a fan and a small air pump. The structure is simple, the failure rate is low, and the total life cycle maintenance cost is significantly lower than that of traditional technologies. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a cross-sectional view of an integrated air carbon capture device driven by solar thermal energy according to the present invention.

[0037] Figure 2 This is a cross-sectional view of a solar thermal driven integrated air carbon capture device of the present invention after the solar collector plate has been disassembled.

[0038] Figure 3 This is a partial cross-sectional view of the adsorption device.

[0039] Figure 4 This is a top view of the adsorption device.

[0040] In the picture: 10. Air intake device; 11. Housing; 12. Base; 13. Fan; 14. Air inlet; 15. Air outlet; 16. Assembly port; 17. Mounting platform; 20. Adsorption device; 21. Ventilation duct; 22. Shell; 23. Receiving cavity; 24. Ventilation hole; 25. Air vent; 26. Adsorbent; 30. Thermal management components; 31. Solar collector panel; 32. Air pump; 33. Gas pipeline; 40. Monitor; 50. Vacuum insulation layer. Detailed Implementation

[0041] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, not all embodiments.

[0042] Example like Figures 1 to 4As shown, a solar thermal-driven integrated air carbon capture device highly integrates a high-performance composite adsorbent with a stable and adaptive solar thermal management strategy to achieve low-energy consumption, high efficiency, and continuous operation of direct air capture.

[0043] The solar thermal-driven integrated air carbon capture device includes an exhaust fan 10, an adsorption device 20, a thermal management component 30, a control device, and a detection component (not shown).

[0044] Specifically, the adsorption device 20 has an adsorbent 26 for adsorbing carbon dioxide. The thermal management assembly 30 is used to provide heat for the desorption of the adsorbent 26 and to manage the heat flow.

[0045] Specifically, both the exhaust fan 10 and the thermal management component 30 are electrically connected to the control device, which is used to control the exhaust fan 10 and the thermal management component 30.

[0046] Specifically, the detection component is electrically connected to the control device, which is also used to display the data detected by the detection component.

[0047] In this embodiment, the thermal management component 30 includes a solar collector panel 31, a phase change material layer (not shown), a gas pipe 33, and a gas pump 32. The phase change material layer is fixedly disposed on the back side of the solar collector panel 31.

[0048] Specifically, the solar collector plate 31 is disposed on the outer periphery of the adsorption device 20, and a vacuum insulation layer 50 is disposed between the solar collector plate 31 and the adsorption device 20, with the phase change material layer located inside the vacuum insulation layer 50.

[0049] In this embodiment, the adsorption device 20 includes a ventilation duct 21 and a housing 22.

[0050] Specifically, the ventilation duct 21 and the housing 22 are fixedly connected, the ventilation duct 21 and the housing 22 form a ring structure, and a receiving cavity 23 is formed between the ventilation duct 21 and the housing 22, the receiving cavity 23 is used to contain the adsorbent 26.

[0051] Specifically, the top of the housing 22 has multiple ventilation holes 24, and the wall of the ventilation duct 21 has multiple vent holes 25. Both the ventilation holes 24 and the vent holes 25 are connected to the receiving cavity 23.

[0052] In this embodiment, the air-expelling device 10 includes a housing 11, a base 12, and a fan 13.

[0053] Specifically, the air pump 32 is a dual-purpose air pump that can both pump and inflate air.

[0054] Specifically, one end of the gas pipe 33 is connected to the air pump 32, and the other end of the gas pipe 33 passes through the base and communicates with the vacuum insulation layer 50. The air pump 32 regulates the air pressure inside the vacuum insulation layer 50 by pumping air into or out of the vacuum insulation layer 50.

[0055] Specifically, the housing 11 is provided with an air inlet 14, and the base 12 is provided with an air outlet 15. The fan 13 is fixedly disposed in the air inlet 14, and the tops of the ventilation duct 21 and the housing 22 are both located below the air outlet 15.

[0056] Specifically, the side wall of the housing 11 is provided with an assembly port 16, and the solar collector panel 31 is fixedly disposed within the assembly port 16. The solar collector panel 31 is the key to realizing solar thermal driven desorption. The solar collector panel 31 is used to absorb solar radiation energy and convert it into heat energy.

[0057] Specifically, the base 12 is fixedly connected to the housing 11, the air outlet 15 is connected to the ventilation duct 21 and the ventilation hole 24, and the ventilation duct 21 and the housing 22 are sandwiched between the housing 11 and the base 12; the area enclosed by the base 12, the housing 11, the housing 22 and the solar collector 31 is the vacuum insulation layer 50.

[0058] When in use, outside air enters through the air inlet 14 driven by the fan 13, then flows downward into the ventilation duct 21 and the receiving cavity 23, and is finally discharged through the air outlet 15, forming a continuous airflow.

[0059] The adsorption device 20 is constructed as a ring-shaped hollow structure. To optimize mass transfer efficiency, the system employs a dual-path perforation scheme. Ventilation holes 24 ensure uniform airflow distribution, while venting holes 25 on the duct wall increase the contact area between air and the solid adsorbent. When air flows through this ring-shaped duct, CO2 molecules can simultaneously diffuse efficiently through the top ventilation holes 24 and the side wall venting holes 25, reaching the adsorbent bed for capture.

[0060] In this embodiment, the adsorbent 26 is a solid adsorbent 26, which is one of MOFs, zeolites or solid amines.

[0061] In this embodiment, the detection assembly includes a temperature sensor (not shown), a pressure sensor (not shown), and a CO2 concentration sensor (not shown). Both the temperature sensor and the CO2 concentration sensor are disposed within the receiving cavity 23. The pressure sensor is disposed within the vacuum insulation layer 50.

[0062] The air pump 32, pressure sensor and control device work together to dynamically adjust the vacuum level in the vacuum insulation layer 50 through programming control, thereby precisely controlling its insulation performance.

[0063] Temperature and CO2 concentration sensors are used to monitor changes in temperature and CO2 concentration inside the adsorption unit in real time, providing operators with intuitive system operation data so that they can set or adjust the process parameters of the adsorption-desorption cycle based on the data.

[0064] In this embodiment, a mounting platform 17 is provided above the housing 11, and the mounting platform 17 is fixedly connected to the housing 11. The control device includes a controller (not shown) and a display 40, which is fixedly mounted on the top surface of the mounting platform 17.

[0065] In some embodiments, NbOFFIVE-1-Ni is used as the solid adsorbent. Studies have shown that the adsorbent has an adsorption capacity of 1.3 mmol / g for CO2 under conditions of 400 ppm and 298 K, whether in a dry or humid environment.

[0066] The specific working process of the solar thermal-driven integrated air carbon capture device in the embodiments will be further disclosed below.

[0067] The solar thermal-driven integrated air carbon capture device prioritizes the adsorption process at night or during low-temperature periods according to a preset time sequence.

[0068] During the adsorption stage, the control device first starts the air pump 32 to evacuate the vacuum insulation layer 50, thereby increasing the vacuum level of the vacuum insulation layer 50 and putting it in a highly efficient heat insulation state. This blocks the heat transfer from the phase change material layer to the adsorption device 20, ensuring that the adsorbent 26 can efficiently adsorb CO2 at low temperatures.

[0069] Furthermore, when the vacuum level of the vacuum insulation layer 50 reaches the set range, the control device starts the fan 13 to introduce air into the adsorption device 20.

[0070] The solar thermal-driven integrated air carbon capture device performs desorption during periods of sufficient sunlight in the daytime according to a preset time sequence, or automatically switches from the adsorption stage to the desorption stage when the CO2 concentration of the adsorption device 20 reaches a set range value.

[0071] During the desorption stage, the control device first stops the fan 13 to keep the adsorption device 20 in a relatively static environment, preventing the high concentration of CO2 desorbed later from being diluted by the airflow.

[0072] Furthermore, the air pump 32 is used to fill the vacuum insulation layer 50 with air, reducing its vacuum level and enhancing heat conduction. At this time, the heat stored in the phase change material layer can be efficiently transferred to the solid adsorbent material, raising its temperature to the desorption point, thereby releasing the captured CO2.

[0073] In some operating methods, the desorption temperature range is 80-110℃; the set vacuum level range is ≤0.1kPa.

[0074] In some working methods, the CO2 concentration range is set to 400-500 ppm.

[0075] Although embodiments of this application have been shown and described above, the scope of protection of this invention is not limited thereto. Any variations or substitutions that can be conceived without inventive effort should be covered within the scope of protection of this invention. Unless expressly stated otherwise, no element, action or instruction used herein should be construed as critical or necessary.

Claims

1. A solar photo-thermal driven integrated air carbon capture device, characterized in that, The application relates to a carbon dioxide adsorption device. The device comprises: an air guiding device; an adsorption device in communication with the air guiding device, the adsorption device having an adsorbent for adsorbing carbon dioxide; a heat management assembly for providing heat energy for desorption of the adsorbent and managing heat flow; and a control device; the air guiding device is electrically connected to the control device, and the control device is used at least for controlling the air guiding device; the heat management assembly comprises a solar collector and a phase change material layer, and the phase change material layer is fixedly arranged on the back of the solar collector; the solar collector is arranged on the outer periphery of the adsorption device, and a vacuum heat insulation layer is arranged between the solar collector and the adsorption device, and the phase change material layer is located in the vacuum heat insulation layer.

2. The solar photo-thermal driven integrated air carbon capture device according to claim 1, wherein, The device further comprises: a detection assembly; the detection assembly is electrically connected to the control device, and the control device is further used for displaying data detected by the detection assembly.

3. The integrated solar-driven air-based carbon capture and thermal energy device of claim 2, wherein, The adsorption device comprises a ventilation pipe and a shell; the ventilation pipe and the shell are fixedly connected, the ventilation pipe and the shell form a ring structure, and a containing cavity is formed between the ventilation pipe and the shell, and the containing cavity is used for containing the adsorbent; a plurality of ventilation holes are arranged on the top of the shell, and a plurality of air holes are arranged on the wall surface of the ventilation pipe; the ventilation holes and the air holes are in communication with the containing cavity.

4. The integrated solar-driven air-based carbon capture and thermal energy device of claim 3, wherein, The heat management assembly further comprises a gas pipe and a gas pump; one end of the gas pipe is in communication with the air outlet of the gas pump, and the other end of the gas pipe is in communication with the vacuum heat insulation layer, and the gas pump is used for adjusting the air pressure in the vacuum heat insulation layer; the gas pump is electrically connected to the control device.

5. The integrated solar-driven air-based carbon capture and solar-thermal device of claim 4, wherein, The air guiding device comprises a box body, a base and a fan; an air inlet is arranged on the box body, and an air outlet is arranged on the base; the fan is fixedly arranged in the air inlet, and the top ends of the ventilation pipe and the shell are arranged below the air outlet; the base is fixedly connected to the box body, the air outlet is in communication with the ventilation pipe, and the ventilation pipe and the shell are clamped between the box body and the base.

6. The integrated solar-driven air-based carbon capture and thermal energy device of claim 5, wherein, an assembly opening is arranged on the box body, and the solar collector is fixedly arranged in the assembly opening.

7. The integrated solar-driven air-based carbon capture and thermal energy harnessing device of claim 1, wherein, The adsorbent is a solid adsorbent.

8. The integrated solar-driven air-based carbon capture and thermal energy device of claim 6, wherein, The detection assembly comprises a temperature sensor, a pressure sensor and a CO2 concentration sensor; the temperature sensor and the CO2 concentration sensor are arranged in the containing cavity; the pressure sensor is arranged in the vacuum heat insulation layer.

9. The integrated solar-driven air-based carbon capture and thermal energy harnessing device of claim 8, wherein, a carrying platform is arranged above the box body, and the carrying platform is fixedly connected to the box body; the control device has a display, and the display is fixedly arranged on the top surface of the carrying platform.

10. The integrated solar-driven air-based carbon capture and thermal energy device of claim 7, wherein, The solid adsorbent is one of MOFs, zeolite or solid amine.

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