Air carbon capture system and method for focused solar heating

Abstract

This application proposes an air carbon capture system and method for concentrated solar heating. The system includes: a concentrator, a rotary air carbon capture device, an induced draft fan, a purge pump, a desorption pump, and a carbon dioxide storage module. The concentrator is used to receive sunlight and concentrate and reflect the received sunlight to the rotary air carbon capture device. The rotary air carbon capture device includes a carbon dioxide adsorption chamber, a carbon dioxide desorption chamber, a transition seal area, a residual gas purge area, a carbon dioxide adsorbent unit, and a rotating shaft. The induced draft fan is connected to the air outlet of the rotary air carbon capture device. The purge pump is connected to the purge gas outlet of the residual gas purge area. The inlet of the desorption pump is connected to the desorption gas outlet of the rotary air carbon capture device. The carbon dioxide storage module is connected to the outlet of the desorption pump. This solution allows the desorption process and the adsorption process to be carried out simultaneously in the same device, reduces the complexity of the carbon capture system, and saves operating costs.

Description

Technical Field

[0001] The present application relates to the technical field of carbon dioxide capture, and in particular to an air carbon capture system and method using focused solar heating. Background Art

[0002] With global climate change, carbon dioxide emission reduction technology has received increasing attention. In addition to conventional carbon dioxide emission reduction from industrial sources, direct capture of carbon dioxide from the air has also become a hot topic of concern worldwide as a feasible carbon dioxide emission reduction technology route.

[0003] In related technologies, capturing carbon dioxide from the air typically involves physical and chemical adsorption on solid adsorbents, which are then regenerated using a heat medium such as water vapor. However, this approach requires a dedicated heating system to provide heat for adsorbent regeneration, resulting in a complex system and high operating costs. Summary of the Invention

[0004] In order to solve the above problems, the present application provides an air carbon capture system and method for focused solar heating.

[0005] According to a first aspect of the present application, there is provided an air carbon capture system for concentrated solar heating, comprising: a concentrator, a rotary air carbon capture device, an induced draft fan, a purge pump, a desorption pump, and a carbon dioxide storage module; wherein:

[0006] The concentrator is used to receive sunlight and concentrate and reflect the received sunlight to the rotary air carbon capture device;

[0007] The rotary air carbon trap comprises a carbon dioxide adsorption chamber, a carbon dioxide desorption chamber, a transition sealing area, a residual gas purge area, a carbon dioxide adsorbent unit and a rotating shaft; wherein the carbon dioxide adsorbent unit is cylindrical and is used to place the carbon dioxide adsorbent, and the carbon dioxide adsorbent unit is provided with a plurality of grids formed by a plurality of partitions passing through the central axis of the carbon dioxide adsorbent unit, and the carbon dioxide adsorbents in each of the grids are isolated from each other; the rotating shaft is fixed to the axial center of the carbon dioxide adsorbent unit and is used to rotate at a preset speed and direction and drive the carbon dioxide adsorbent unit to rotate; the surface of the carbon dioxide desorption chamber is arc-shaped, and the arc-shaped surface is used to receive the sunlight reflected by the concentrator, the carbon dioxide desorption chamber is provided with a desorbed gas outlet, a part of the carbon dioxide adsorbent unit is located in the carbon dioxide desorption chamber, and the carbon dioxide desorption chamber is used to obtain The invention relates to a method for extracting sunlight and performing a desorption process on the carbon dioxide adsorbent rotated into the carbon dioxide desorption chamber based on the energy of the sunlight; the carbon dioxide adsorption chamber is provided with an air inlet and an air outlet on both sides, and the other part of the carbon dioxide adsorbent unit is located in the carbon dioxide adsorption chamber, and the carbon dioxide adsorption chamber is used to adsorb carbon dioxide in the air based on the carbon dioxide adsorbent rotated into the carbon dioxide adsorption chamber; the transition sealing area is provided between the carbon dioxide desorption chamber and the carbon dioxide adsorption chamber in the rotation direction of the rotation axis, and is used to seal the carbon dioxide adsorbent corresponding to the grille rotated into the transition sealing area; the residual gas purge area is provided between the carbon dioxide adsorption chamber and the carbon dioxide desorption chamber in the rotation direction of the rotation axis, and is used to discharge air from the pores of the carbon dioxide adsorbent corresponding to the grille rotated into its area, and the residual gas purge area is provided with a purge gas outlet;

[0008] The induced draft fan is connected to the air outlet of the rotary air carbon catcher, and is used to allow air to enter from the air inlet, be adsorbed by the carbon dioxide adsorbent, and then be discharged from the air outlet;

[0009] The purge pump is connected to the purge gas outlet of the residual gas purge zone in the rotary air carbon trap; the purge pump is used to discharge the air in the carbon dioxide adsorbent pores corresponding to the grid in the residual gas purge zone;

[0010] The inlet of the desorption pump is connected to the desorption gas outlet of the rotary air carbon trap, and is used to discharge the carbon dioxide gas obtained by the desorption process;

[0011] The carbon dioxide storage module is connected to the outlet of the desorption pump and is used to store the captured carbon dioxide gas.

[0012] In some embodiments of the present application, the arc surface of the carbon dioxide desorption chamber in the rotary air carbon capture device is made of a light-transmitting and heat-insulating material.

[0013] As a possible implementation manner, the outer surface of the carbon dioxide adsorbent unit in the rotary air carbon capture device is coated with a sunlight absorbing coating.

[0014] In some embodiments of the present application, the rotation speed of the rotating shaft in the rotary air carbon catcher is determined based on the temperature of the carbon dioxide desorption chamber.

[0015] As a possible implementation, the carbon dioxide storage module includes a buffer tank, a compressor, and a carbon dioxide storage tank; wherein:

[0016] The inlet of the buffer tank is connected to the outlet of the desorption pump, and the buffer tank is used to store the captured carbon dioxide gas;

[0017] The inlet of the compressor is connected to the outlet of the buffer tank, and the compressor is used to compress the captured carbon dioxide gas;

[0018] The carbon dioxide storage tank is connected to the outlet of the compressor, and is used to store the carbon dioxide liquid obtained after compression.

[0019] According to a second aspect of the present application, a method for capturing carbon from air in concentrated solar heating is provided. The method is applied to the air-carbon capture system in concentrated solar heating described in the first aspect, comprising:

[0020] Under the action of the induced draft fan, the carbon dioxide adsorption chamber of the rotary air carbon capturer absorbs carbon dioxide in the air based on the carbon dioxide adsorbent rotated into the carbon dioxide adsorption chamber in the carbon dioxide adsorbent unit, and discharges clean air;

[0021] Under the action of the purge pump, the air in the carbon dioxide adsorbent pores corresponding to the grid in the residual gas purge zone of the rotary air carbon capture device is discharged;

[0022] The carbon dioxide desorption chamber of the rotary air carbon capture device receives sunlight reflected by the concentrator, and desorbs the carbon dioxide adsorbent in the carbon dioxide adsorbent unit that is rotated into the carbon dioxide desorption chamber based on the energy of the received sunlight, and discharges the captured carbon dioxide gas under the action of the desorption pump;

[0023] The carbon dioxide storage module stores the captured carbon dioxide gas.

[0024] According to the technical solution of the present application, sunlight is concentrated and reflected to the rotary air carbon capture device through a concentrator, and the rotary air carbon capture device adsorbs carbon dioxide in the air, and at the same time desorbs the adsorbed carbon dioxide based on the energy of the received sunlight, and the desorbed carbon dioxide is stored by the carbon dioxide storage module. In this solution, since the rotary air carbon capture device includes a carbon dioxide adsorption chamber and a carbon dioxide desorption chamber, the carbon dioxide adsorption process and the desorption process are completed in the same device during the adsorption stage, thereby reducing the complexity of the air carbon capture system. In addition, the residual gas purge zone in the rotary air carbon capture device can discharge the residual air in the carbon dioxide adsorbent to improve the purity of the captured carbon dioxide. In addition, the carbon dioxide desorption chamber uses solar energy as a desorption heat source, and uses a concentrator to concentrate light to increase the light intensity to increase the desorption temperature. In this way, there is no need to equip a special heating system to achieve carbon dioxide desorption, which not only increases the carbon dioxide capture amount, but also saves operating costs and reduces the complexity of the system.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0027] Figure 1 This is a structural block diagram of an air carbon capture system for concentrated solar heating provided in an embodiment of the present application;

[0028] Figure 2 This is a structural block diagram of a rotary air carbon trap in an embodiment of the present application;

[0029] Figure 3 for Figure 2 Cross-sectional view of the middle AA section;

[0030] Figure 4 This is a flow chart of a method for capturing carbon from air using concentrated solar heating, as provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] Concentrator, 101; rotary air carbon trap, 102; induced draft fan, 103; purge pump, 104; desorption pump, 105; carbon dioxide storage module, 106; buffer tank, 106-1; compressor, 106-2; carbon dioxide storage tank, 106-3; carbon dioxide adsorption chamber, 201; carbon dioxide desorption chamber, 202; transition sealing area, 203; residual gas purge area, 204; carbon dioxide adsorbent unit, 205; rotating shaft, 206. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0034] It should be noted that with global climate change, carbon dioxide emission reduction technology has received more and more attention; in addition to conventional carbon dioxide emission reduction from industrial sources, direct capture of carbon dioxide from the air has also become a hot topic of concern worldwide as a feasible carbon dioxide emission reduction technology route.

[0035] In related technologies, capturing carbon dioxide from the air typically involves physical and chemical adsorption on solid adsorbents, which are then regenerated using a heat medium such as water vapor. However, this approach requires a dedicated heating system to provide heat for adsorbent regeneration, resulting in a complex system and high operating costs.

[0036] In order to solve the above problems, the present application provides an air carbon capture system and method for focused solar heating.

[0037] Figure 1 This is a structural block diagram of an air carbon capture system for concentrated solar heating provided in an embodiment of the present application. Figure 1 As shown, the system includes: a concentrator 101 , a rotary air carbon catcher 102 , an induced draft fan 103 , a purge pump 104 , a desorption pump 105 and a carbon dioxide storage module 106 .

[0038] In some embodiments of the present application, the concentrator 101 is configured to receive sunlight and reflect the sunlight to the rotating air carbon catcher 102. The concentrator 101 can track the movement of the sun and adjust the reflection direction to focus the sunlight on the rotating air carbon catcher 102. This can increase the intensity of the sunlight received by the rotating air carbon catcher 102 and shorten the carbon dioxide desorption process. The rotating air carbon catcher 102 is configured to adsorb carbon dioxide from the air and simultaneously desorb the adsorbed carbon dioxide based on the energy of sunlight.

[0039] Figure 2 This is a structural block diagram of a rotary air carbon collector in an embodiment of the present application, such as Figure 2 As shown, the rotary air carbon trap includes a carbon dioxide adsorption chamber 201, a carbon dioxide desorption chamber 202, a transition sealing area 203, a residual gas purge area 204, a carbon dioxide adsorbent unit 205, and a rotating shaft 206. The carbon dioxide adsorbent unit 205 is cylindrical and is used to store carbon dioxide adsorbent. The carbon dioxide adsorbent unit 205 is provided with a plurality of grids formed by a plurality of partitions passing through the central axis of the carbon dioxide adsorbent unit. The carbon dioxide adsorbents in each grid are isolated from each other. To illustrate the structure of the rotary air carbon trap, Figure 3 for Figure 2 The cross-sectional view of the AA section in FIG. 2 is a cross-sectional view of the carbon dioxide adsorbent unit 205, wherein the circular area is a cross-sectional view of the carbon dioxide adsorbent unit 205, wherein each sector area is the corresponding cross-sectional area of each grid. The carbon dioxide adsorbent placed in the carbon dioxide adsorbent unit 205 can be granular or in a monolithic form. For example, the carbon dioxide adsorbent placed in the carbon dioxide adsorbent unit 205 can be consistent in shape and size with the corresponding grid. The carbon dioxide adsorbent placed in the carbon dioxide adsorbent unit 205 can also be granular, that is, the carbon dioxide adsorbent unit 205 fixes the granular carbon dioxide adsorbent in the corresponding grid through a cylindrical frame. As an example, the carbon dioxide adsorbent placed in the carbon dioxide adsorbent unit 205 can be a porous material loaded with organic amines (such as zeolite, silica gel, molecular sieve, approximate organic framework, etc.).

[0040] like Figure 2As shown, the rotating shaft 206 is fixed to the axial center of the carbon dioxide adsorbent unit 205 and is configured to rotate at a predetermined speed and direction, thereby driving the carbon dioxide adsorbent unit 205 to rotate. The carbon dioxide desorption chamber 202 has an arc-shaped surface that receives sunlight reflected by the concentrator. The carbon dioxide desorption chamber 202 is provided with a desorbed gas outlet. A portion of the carbon dioxide adsorbent unit 205 is located within the carbon dioxide desorption chamber 202. The carbon dioxide desorption chamber 202 is configured to capture sunlight and, based on the sunlight's energy, desorb the carbon dioxide adsorbent that has been rotated into the carbon dioxide desorption chamber. Air inlets and outlets are provided on both sides of the carbon dioxide adsorption chamber 201. The remaining portion of the carbon dioxide adsorbent unit 205 is located within the carbon dioxide adsorption chamber 201. The carbon dioxide adsorption chamber 201 is configured to adsorb carbon dioxide from the air based on the carbon dioxide adsorbent that has been rotated into the chamber. That is to say, since the carbon dioxide adsorbent unit 205 rotates following the rotating shaft 206, the carbon dioxide adsorption chamber 201 adsorbs carbon dioxide in the air in real time based on the carbon dioxide adsorbent rotated into its area, and at the same time, the carbon dioxide desorption chamber 202 desorbs the carbon dioxide adsorbed in the carbon dioxide adsorbent rotated into its area in real time, thereby realizing the adsorption process and the desorption process being carried out simultaneously in the same device.

[0041] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the transition sealing area 203 is provided between the carbon dioxide desorption chamber 202 and the carbon dioxide adsorption chamber 201 along the rotation direction of the rotation axis 206, and is used to seal the carbon dioxide adsorbent corresponding to the grille rotated into the transition sealing area to prevent air in the carbon dioxide adsorption chamber 201 from leaking into the carbon dioxide desorption chamber 202. The grille rotated into the transition sealing area refers to a grille completely located within the transition sealing area. If a grille is partially located within the transition sealing area 203 and partially located within the carbon dioxide desorption chamber 202, the carbon dioxide adsorbent in the grille is still in the desorption process, that is, the grille is not completely located within the transition sealing area.

[0042] In addition, the residual gas purge zone 204 is provided between the carbon dioxide adsorption chamber 201 and the carbon dioxide desorption chamber 202 along the rotation direction of the rotation axis 206, and is used to discharge the air in the carbon dioxide adsorbent pores corresponding to the grid rotated into the residual gas purge zone 204, and the residual gas purge zone 204 is provided with a purge gas outlet, which is used to connect to a purge pump. Figure 2As shown, if the rotating shaft 206 in the rotary air carbon trap rotates counterclockwise, the residual gas purge zone 204 is the area between the carbon dioxide adsorption chamber 201 and the carbon dioxide desorption chamber 202 along this rotation direction. This residual gas purge zone 204 not only prevents air in the carbon dioxide adsorption chamber 201 from leaking into the carbon dioxide desorption chamber 202, but also, under the action of a purge pump, discharges air from the carbon dioxide adsorbent pores corresponding to the grids that rotate into this area, thereby improving the purity of the captured carbon dioxide.

[0043] It should be noted that a portion of the carbon dioxide adsorbent unit 205 is located in the carbon dioxide desorption chamber 202, another portion is located in the carbon dioxide adsorption chamber 201, and the remaining portion is located in the transition sealing area 203 and the residual gas purge area 204. The size of the area of the carbon dioxide adsorbent unit 205 located in the carbon dioxide adsorption chamber 201 is related to the adsorption time of carbon dioxide in the air, and the size of the area of the carbon dioxide adsorbent unit 205 located in the carbon dioxide adsorption chamber 202 is related to the desorption time of carbon dioxide. Therefore, the size of the corresponding area of the carbon dioxide adsorbent unit 205 located in the carbon dioxide adsorption chamber 201 and the carbon dioxide desorption chamber 202 can be determined based on actual application scenarios, and this application does not impose any restrictions on this.

[0044] In addition, in the air carbon capture system of the focused solar heating system, the position and orientation of the rotating air carbon capture device need to be determined based on the position and orientation of the concentrator so that the sunlight reflected by the concentrator can illuminate the curved surface of the carbon dioxide desorption chamber of the rotating air carbon capture device.

[0045] In some embodiments of the present application, Figure 1 As shown, the induced draft fan 103 is connected to the air outlet of the rotary air carbon catcher 102, allowing air to enter through the air inlet, pass through the carbon dioxide adsorbent, and then be discharged from the air outlet after being adsorbed by the carbon dioxide adsorbent. A purge pump 104 is connected to the purge air outlet of the residual gas purge zone of the rotary air carbon catcher 102. Purge pump 104 is used to discharge air from the carbon dioxide adsorbent pores corresponding to the grid within the residual gas purge zone. The inlet of the desorption pump 105 is connected to the desorption air outlet of the rotary air carbon catcher 102, and is used to discharge carbon dioxide gas obtained during the desorption process. A carbon dioxide storage module 106 is connected to the outlet of the desorption pump 105, and is used to store the captured carbon dioxide gas.

[0046] In other words, the adsorption and desorption processes in this concentrated solar heating air carbon capture system can occur simultaneously. Air enters the CO2 adsorption chamber's air inlet under the action of an induced draft fan. The CO2 adsorbent within the chamber adsorbs CO2, and the clean, CO2-free air is discharged into the atmosphere through the air outlet. A concentrator reflects concentrated sunlight into the CO2 desorption chamber of the rotary air carbon capture system, raising the temperature of the CO2 adsorbent within the chamber and releasing the adsorbed CO2. A vacuum pump then discharges the released CO2 through the desorbed gas outlet to the CO2 storage module.

[0047] In some embodiments of the present application, Figure 2 As shown, the curved surface of the carbon dioxide desorption chamber 202 of the rotary air carbon collector can be a light-transmitting and heat-insulating material, such as glass, polycarbonate, polymethyl methacrylate, etc., which receives sunlight through the light-transmitting and heat-insulating material, allows sunlight to enter the carbon dioxide desorption chamber 202, and allows sunlight to irradiate the carbon dioxide adsorbent located in the carbon dioxide desorption chamber 202, so that the carbon dioxide desorption chamber 202 desorbs the carbon dioxide adsorbent rotated into the carbon dioxide desorption chamber based on the energy of sunlight.

[0048] In other embodiments of the present application, Figure 2 and Figure 3 As shown, the outer surface of the carbon dioxide adsorbent unit 204 can be coated with a sunlight absorbing coating to enhance the absorption of sunlight and the conversion of heat, thereby increasing the temperature of the carbon dioxide desorption chamber 202 and the temperature of the carbon dioxide adsorbent in the carbon dioxide desorption chamber 202, thereby improving the desorption rate of carbon dioxide.

[0049] Among them, such as Figure 2 and Figure 3As shown, the rotational speed of the rotating shaft 206 in the rotary air carbon capture device can be a preset fixed speed, and its rotational direction can also be preset. To improve the air carbon capture efficiency of the system, the rotational speed of the rotating shaft 206 can also be determined based on the temperature of the carbon dioxide desorption chamber 202. It can be understood that the rotational speed of the rotating shaft 206 is equivalent to the rotational speed of the carbon dioxide adsorbent unit 205. Adjusting the rotational speed of the carbon dioxide adsorbent unit 205 can also adjust the desorption time of the carbon dioxide adsorbent. When sunlight is strong and the temperature of the carbon dioxide desorption chamber 202 is high, the desorption time required for the carbon dioxide adsorbent is shorter, which means that the rotational speed of the carbon dioxide adsorbent unit 205 can be increased. When sunlight is weak and the temperature of the carbon dioxide desorption chamber 202 is low, the desorption time required for the carbon dioxide adsorbent is longer, which means that the rotational speed of the carbon dioxide adsorbent unit 205 can be reduced. As an example, the controller of the rotating shaft 206 is configured with a correspondence between the temperature of the carbon dioxide desorption chamber 202 and the rotation speed of the rotating shaft. By obtaining the temperature of the carbon dioxide desorption chamber 202 in real time, the rotation speed of the rotating shaft 206 is determined, and the rotating shaft 206 is controlled to rotate at the corresponding rotation speed.

[0050] As an implementation method, Figure 1 As shown, the carbon dioxide storage module 106 may include a buffer tank 106-1, a compressor 106-2, and a carbon dioxide storage tank 106-3. The inlet of buffer tank 106-1 is connected to the outlet of desorption pump 105, and buffer tank 106-1 is used to store captured carbon dioxide gas. The inlet of compressor 106-2 is connected to the outlet of buffer tank 106-1, and compressor 106-2 is used to compress the captured carbon dioxide gas. Carbon dioxide storage tank 106-3 is connected to the outlet of compressor 106-2, and carbon dioxide storage tank 106-3 is used to store the compressed carbon dioxide liquid.

[0051] It should be noted that when the focused solar heating air carbon capture system in the embodiment of the present application is in operation, the operating temperature of the carbon dioxide adsorption chamber in the rotary air carbon capture device is ambient temperature. In order to overcome the resistance of the carbon dioxide adsorbent, its operating pressure can be a slightly negative pressure. The operating temperature of the residual gas purge zone is ambient temperature, and the operating pressure range is -0.15 bar to -0.05 bar. The operating temperature range of the carbon dioxide desorption chamber can be 60-150°C. Preferably, the operating temperature range of the carbon dioxide desorption chamber is 80-120°C. The operating pressure of the carbon dioxide desorption chamber is adjusted by a desorption pump and kept consistent with the operating pressure of the residual gas purge zone to ensure that the gas in the residual gas purge zone and the gas in the carbon dioxide desorption chamber do not permeate each other.

[0052] According to the concentrated solar heating air carbon capture system of the embodiment of the present application,

[0053] The sun's rays are concentrated and reflected by a concentrator onto a rotary air carbon capture device, which adsorbs carbon dioxide from the air and desorbs the adsorbed carbon dioxide based on the energy of the received sunlight. The desorbed carbon dioxide is then stored by a carbon dioxide storage module. In this solution, since the rotary air carbon capture device includes a carbon dioxide adsorption chamber and a carbon dioxide desorption chamber, the carbon dioxide adsorption and desorption processes are completed in the same device during the adsorption phase, thereby reducing the complexity of the air carbon capture system. In addition, the residual gas purge zone in the rotary air carbon capture device can discharge the residual air in the carbon dioxide adsorbent to improve the purity of the captured carbon dioxide. In addition, the carbon dioxide desorption chamber uses solar energy as a desorption heat source, and uses a concentrator to concentrate light to increase the light intensity and thus increase the desorption temperature. This eliminates the need for a dedicated heating system to achieve carbon dioxide desorption, which not only increases the carbon dioxide capture capacity, but also saves operating costs and reduces the complexity of the system.

[0054] In order to implement the above embodiments, the present application provides an air carbon capture method for concentrated solar heating.

[0055] Figure 4 This is a flow chart of a method for capturing carbon from air in a focused solar heating system according to an embodiment of the present application. It should be noted that the method for capturing carbon from air in a focused solar heating system according to an embodiment of the present application is applied to the system for capturing carbon from air in a focused solar heating system according to the above embodiment. Figure 4 As shown, the method includes the following steps:

[0056] In step 401 , under the action of an induced draft fan, the carbon dioxide adsorption chamber of the rotary air carbon capturer adsorbs carbon dioxide in the air based on the carbon dioxide adsorbent rotated into the carbon dioxide adsorption chamber in the carbon dioxide adsorbent unit, and discharges clean air.

[0057] Step 402 : Under the action of a purge pump, the air in the pores of the carbon dioxide adsorbent corresponding to the grid in the residual gas purge area of the rotary air carbon catcher is discharged.

[0058] In step 403, the carbon dioxide desorption chamber of the rotary air carbon capture device receives sunlight reflected by the concentrator, and based on the energy of the received sunlight, desorbs the carbon dioxide adsorbent in the carbon dioxide adsorbent unit that is rotated into the carbon dioxide desorption chamber, and discharges the captured carbon dioxide gas under the action of a desorption pump.

[0059] In step 404 , the carbon dioxide storage module stores the captured carbon dioxide gas.

[0060] According to the concentrated solar heating air carbon capture method of the embodiment of the present application, sunlight is concentrated and reflected to a rotating air carbon capture device through a concentrator. The rotating air carbon capture device adsorbs carbon dioxide in the air and desorbs the adsorbed carbon dioxide based on the energy of the received sunlight. The desorbed carbon dioxide is then stored by a carbon dioxide storage module. In this solution, since the rotating air carbon capture device includes a carbon dioxide adsorption chamber and a carbon dioxide desorption chamber, the carbon dioxide adsorption and desorption processes are completed in the same device during the adsorption stage, thereby reducing the complexity of the air carbon capture system. In addition, the residual gas purge zone in the rotating air carbon capture device can discharge residual air in the carbon dioxide adsorbent to improve the purity of the captured carbon dioxide. In addition, the carbon dioxide desorption chamber uses solar energy as the desorption heat source, and uses a concentrator to concentrate light to increase the light intensity to increase the desorption temperature. This eliminates the need for a dedicated heating system to achieve carbon dioxide desorption, which not only increases the carbon dioxide capture amount, but also saves operating costs and reduces the complexity of the system.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. 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 any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0062] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0063] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0064] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A concentrated solar heating air carbon capture system, characterized in that: include: Concentrator, rotary air carbon collector, induced draft fan, purge pump, desorption pump and carbon dioxide storage module; including: The concentrator is used to receive sunlight and concentrate and reflect the received sunlight to the rotary air carbon capture device; The rotary air carbon trap comprises a carbon dioxide adsorption chamber, a carbon dioxide desorption chamber, a transition sealing area, a residual gas purge area, a carbon dioxide adsorbent unit and a rotating shaft; wherein the carbon dioxide adsorbent unit is cylindrical and is used to place the carbon dioxide adsorbent, and the carbon dioxide adsorbent unit is provided with a plurality of grids formed by a plurality of partitions passing through the central axis of the carbon dioxide adsorbent unit, and the carbon dioxide adsorbents in each of the grids are isolated from each other; the rotating shaft is fixed to the axial center of the carbon dioxide adsorbent unit and is used to rotate at a preset speed and direction and drive the carbon dioxide adsorbent unit to rotate; the surface of the carbon dioxide desorption chamber is arc-shaped, and the arc-shaped surface is used to receive the sunlight reflected by the concentrator, the carbon dioxide desorption chamber is provided with a desorbed gas outlet, a part of the carbon dioxide adsorbent unit is located in the carbon dioxide desorption chamber, and the carbon dioxide desorption chamber is used to obtain The invention relates to a method for extracting sunlight and performing a desorption process on the carbon dioxide adsorbent rotated into the carbon dioxide desorption chamber based on the energy of the sunlight; the carbon dioxide adsorption chamber is provided with an air inlet and an air outlet on both sides, and the other part of the carbon dioxide adsorbent unit is located in the carbon dioxide adsorption chamber, and the carbon dioxide adsorption chamber is used to adsorb carbon dioxide in the air based on the carbon dioxide adsorbent rotated into the carbon dioxide adsorption chamber; the transition sealing area is provided between the carbon dioxide desorption chamber and the carbon dioxide adsorption chamber in the rotation direction of the rotation axis, and is used to seal the carbon dioxide adsorbent corresponding to the grille rotated into the transition sealing area; the residual gas purge area is provided between the carbon dioxide adsorption chamber and the carbon dioxide desorption chamber in the rotation direction of the rotation axis, and is used to discharge air from the pores of the carbon dioxide adsorbent corresponding to the grille rotated into its area, and the residual gas purge area is provided with a purge gas outlet; The induced draft fan is connected to the air outlet of the rotary air carbon catcher, and is used to allow air to enter from the air inlet, be adsorbed by the carbon dioxide adsorbent, and then be discharged from the air outlet; The purge pump is connected to the purge gas outlet of the residual gas purge zone in the rotary air carbon trap; the purge pump is used to discharge the air in the carbon dioxide adsorbent pores corresponding to the grid in the residual gas purge zone; The inlet of the desorption pump is connected to the desorption gas outlet of the rotary air carbon trap, and is used to discharge the carbon dioxide gas obtained by the desorption process; The carbon dioxide storage module is connected to the outlet of the desorption pump and is used to store the captured carbon dioxide gas.

2. The system according to claim 1, wherein: The arc surface of the carbon dioxide desorption chamber in the rotary air carbon trap is made of light-transmitting and heat-insulating material.

3. The system according to claim 1, wherein: The outer surface of the carbon dioxide adsorbent unit in the rotary air carbon catcher is coated with a sunlight absorbing coating.

4. The system according to claim 1, wherein: The rotation speed of the rotating shaft in the rotary air carbon trap is determined based on the temperature of the carbon dioxide desorption chamber.

5. The system according to claim 1, wherein: The carbon dioxide storage module includes a buffer tank, a compressor and a carbon dioxide storage tank; wherein: The inlet of the buffer tank is connected to the outlet of the desorption pump, and the buffer tank is used to store the captured carbon dioxide gas; The inlet of the compressor is connected to the outlet of the buffer tank, and the compressor is used to compress the captured carbon dioxide gas; The carbon dioxide storage tank is connected to the outlet of the compressor, and is used to store the carbon dioxide liquid obtained after compression.

6. A method for capturing carbon from air using concentrated solar heating, characterized in that: The method is applied to the air carbon capture system for concentrated solar heating according to any one of claims 1 to 5, comprising: Under the action of the induced draft fan, the carbon dioxide adsorption chamber of the rotary air carbon capturer absorbs carbon dioxide in the air based on the carbon dioxide adsorbent rotated into the carbon dioxide adsorption chamber in the carbon dioxide adsorbent unit, and discharges clean air; Under the action of the purge pump, the air in the carbon dioxide adsorbent pores corresponding to the grid in the residual gas purge zone of the rotary air carbon capture device is discharged; The carbon dioxide desorption chamber of the rotary air carbon capture device receives sunlight reflected by the concentrator, and desorbs the carbon dioxide adsorbent in the carbon dioxide adsorbent unit that is rotated into the carbon dioxide desorption chamber based on the energy of the received sunlight, and discharges the captured carbon dioxide gas under the action of the desorption pump; The carbon dioxide storage module stores the captured carbon dioxide gas.

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