Direct air carbon capture control method and device, controller, system and medium

Abstract

The embodiment of the invention provides a direct air carbon capture control method and device, a controller, a system and a medium, and belongs to the technical field of carbon emission reduction. The device comprises an adsorption cavity, a temperature swing adsorption module, a humidity swing adsorption module, an adsorbent heating module and a humidity control module, the variable-humidity adsorption module is arranged in the adsorption cavity and is positioned between the air outlet and the variable-temperature adsorption module; air flows through the temperature swing adsorption module from the air inlet, the temperature swing adsorption module carries out carbon dioxide adsorption action and drying treatment on the air, the dried air flows through the humidity swing adsorption module, and the humidity swing adsorption module is used for carrying out carbon dioxide adsorption action on the dried air; the adsorbent heating module is used for heating the temperature swing adsorption module and the humidity swing adsorption module, the humidity control module is used for humidifying the interior of the adsorption cavity, and the temperature swing adsorption module and the humidity swing adsorption module are used for desorption so as to desorb carbon dioxide gas. According to the embodiment of the invention, the carbon dioxide trapping efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of carbon emission reduction, and in particular to a direct air carbon capture control method and device, controller, system, and medium. Background Art

[0002] Direct Air Capture (DAC) technology is a technology that directly separates and stores carbon dioxide from the atmosphere, which can remove carbon dioxide from the atmosphere and achieve carbon emission reduction. At present, the efficiency of carbon dioxide capture is low. For example, current direct air capture devices often use heating to make the temperature variable adsorbent desorb carbon dioxide gas, and the capture efficiency is low.

[0003] Therefore, how to improve the efficiency of carbon dioxide capture has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to propose a direct air carbon capture control method and device, controller, system, and medium, aiming to improve the carbon dioxide capture efficiency.

[0005] To achieve the above objectives, a first aspect of an embodiment of the present application provides a direct air carbon capture device, the device comprising:

[0006] An adsorption chamber, wherein a first end of the adsorption chamber has an air outlet and a water inlet, and a second end of the adsorption chamber has an air inlet;

[0007] A temperature swing adsorption module, wherein the temperature swing adsorption module is arranged inside the adsorption chamber;

[0008] A humidity variable adsorption module, the humidity variable adsorption module is arranged inside the adsorption chamber and between the gas outlet and the temperature variable adsorption module;

[0009] An adsorbent heating module, wherein the adsorbent heating module is disposed inside the adsorption chamber;

[0010] A humidity control module, the humidity control module is connected to the water inlet;

[0011] Wherein, when the air inlet and the air outlet are both in an open state, the air flows from the air inlet through the temperature swing adsorption module, the temperature swing adsorption module is used to perform carbon dioxide adsorption and drying on the air, and the dried air flows through the humidity swing adsorption module, the humidity swing adsorption module is used to perform carbon dioxide adsorption on the dried air;

[0012] When the air inlet and the air outlet are both in a closed state, the adsorbent heating module is used to heat the temperature-variable adsorption module and the humidity-variable adsorption module, the humidity control module is used to humidify the inside of the adsorption chamber, and the temperature-variable adsorption module and the humidity-variable adsorption module perform a desorption action to desorb carbon dioxide gas.

[0013] In some embodiments, the humidity swing adsorption module, the temperature swing adsorption module and the adsorbent heating module are sequentially disposed inside the adsorption chamber along a direction from the first end to the second end.

[0014] In some embodiments, the temperature swing adsorption module and the humidity swing adsorption module are separately disposed inside the adsorption chamber.

[0015] In some embodiments, the apparatus further comprises:

[0016] An outlet gas control module, the outlet gas control module comprising a vacuum pump and a carbon dioxide collection module;

[0017] One end of the vacuum pump is connected to the gas outlet, and the other end of the vacuum pump is connected to the carbon dioxide collection module;

[0018] The vacuum pump is used to evacuate the interior of the adsorption chamber so that the interior of the adsorption chamber is in a vacuum state, so that the temperature-variable adsorption module and the humidity-variable adsorption module can desorb carbon dioxide gas; the vacuum pump is also used to extract the desorbed carbon dioxide gas from the gas outlet so that the carbon dioxide gas is collected in the gas collection device.

[0019] In some embodiments, the outlet gas control module further comprises a gas drying module;

[0020] The gas drying module is connected between the gas outlet and one end of the vacuum pump; the gas drying module is used to dry the desorbed carbon dioxide gas.

[0021] To achieve the above object, a second aspect of an embodiment of the present application provides a direct air carbon capture control method, which is applied to the direct air carbon capture device described in the first aspect, and comprises:

[0022] Controlling the air inlet and the air outlet of the adsorption chamber to open, so that the air flows from the air inlet through the temperature swing adsorption module and the humidity swing adsorption module, and is discharged from the air outlet, so that the temperature swing adsorption module performs carbon dioxide adsorption and drying on the air, and the dried air flows through the humidity swing adsorption module, so that the humidity swing adsorption module performs carbon dioxide adsorption on the dried air;

[0023] When predetermined conditions are met, the air inlet and the air outlet are controlled to be closed, the adsorbent heating module is controlled to heat the temperature swing adsorption module and the humidity swing adsorption module, and the humidity control module is controlled to humidify the adsorption chamber, so that the temperature swing adsorption module and the humidity swing adsorption module desorb carbon dioxide gas.

[0024] In some embodiments, controlling the adsorbent heating module to heat the temperature swing adsorption module and the humidity swing adsorption module, and controlling the humidity control module to humidify the adsorption chamber, so that the temperature swing adsorption module and the humidity swing adsorption module desorb carbon dioxide gas, includes:

[0025] Controlling the vacuum pump to evacuate the adsorption chamber so that the adsorption chamber is in a vacuum state;

[0026] The humidity control module is controlled to humidify the adsorption chamber, and the adsorbent heating module is controlled to heat the temperature swing adsorption module and the humidity swing adsorption module, so that the temperature swing adsorption module and the humidity swing adsorption module perform a desorption action under the vacuum state to desorb carbon dioxide gas.

[0027] To achieve the above-mentioned purpose, the third aspect of an embodiment of the present application proposes a controller, which includes a memory and a processor, the memory stores a computer program, and the processor implements the method described in the second aspect when executing the computer program.

[0028] To achieve the above object, a fourth aspect of the embodiments of the present application provides a direct air carbon capture control system, the system comprising: the direct air carbon capture device described in the first aspect, and the controller described in the third aspect;

[0029] The controller is communicatively coupled to the direct air carbon capture device.

[0030] To achieve the above-mentioned purpose, the fifth aspect of the embodiments of the present application proposes a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in the second aspect is implemented.

[0031] The direct air carbon capture control method and device, controller, system, and medium proposed in the present application set a variable humidity adsorption module between the air outlet and the variable temperature adsorption module to ensure that the gas flows through the variable temperature adsorption module first and then through the variable humidity adsorption module inside the adsorption chamber; when the air inlet and the air outlet are both in an open state, the variable temperature adsorption module adsorbs carbon dioxide in the air and dries the air at the same time. The dried air flows through the variable humidity adsorption module, and the variable humidity adsorption module adsorbs carbon dioxide on the dried air to improve the adsorption efficiency of the variable humidity adsorption module; when the air inlet and the air outlet are both in a closed state, the humidity control module humidifies the inside of the adsorption chamber, and the adsorbent heating module heats the variable temperature adsorption module and the variable humidity adsorption module at the same time, thereby promoting the desorption efficiency of the variable temperature adsorption module and the variable humidity adsorption module; the present application combines the variable temperature adsorption module with the variable humidity adsorption module, which can improve the efficiency of carbon dioxide adsorption and desorption, thereby improving the carbon dioxide capture efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a module block diagram of a direct air carbon capture device provided in an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of a specific implementation of a direct air carbon capture device provided in one embodiment of the present application;

[0034] Figure 3 is a schematic diagram of a specific implementation of a direct air carbon capture device provided in another embodiment of the present application;

[0035] Figure 4 is a schematic diagram of a specific implementation of a direct air carbon capture device provided in another embodiment of the present application;

[0036] Figure 5 is a schematic diagram of a specific implementation of a direct air carbon capture device provided in another embodiment of the present application;

[0037] Figure 6 is a flow chart of a direct air carbon capture control method provided in an embodiment of the present application;

[0038] Figure 7 yes Figure 6 Flowchart of step 102 in FIG.

[0039] Figure 8 It is a schematic diagram of the hardware structure of the electronic device provided in the embodiment of the present application.

[0040] Fig. 9 It is a module block diagram of the direct air carbon capture control system provided in an embodiment of the present application.

[0041] Figure numerals: 10, adsorption chamber; 20, variable temperature adsorption module; 30, variable humidity adsorption module; 40, adsorbent heating module; 50, humidity control module; 51, water mist generator; 60, outlet gas control module; 61, vacuum pump; 62, carbon dioxide collection module; 63, gas drying module; 70, water mist spray head; 80, inlet gas control module; 81, air pump; 82, air heating module. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] It should be noted that, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first", "second", etc. in the specification, claims and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0045] First, some nouns involved in this application are analyzed:

[0046] Carbon capture and storage (CCS): refers to the technology of capturing carbon dioxide from industrial production by various means and then storing or utilizing it. Carbon capture technology includes direct air capture technology.

[0047] Direct Air Capture (DAC): is a carbon reduction technology. Direct air capture technology can capture carbon dioxide directly from the air, compress it and store it in a safe place to achieve the effect of removing carbon dioxide from the atmosphere. At present, direct air capture technology has received widespread attention as an important and rare means of negative emission carbon reduction.

[0048] Metal-Organic Frameworks (MOF) are porous materials with a periodic network structure formed by self-assembly of metal ions or metal clusters and organic ligands. MOF has the characteristics of high specific surface area, high pore volume and porous structure.

[0049] Desorption process: also known as desorption process, is the reverse process of gas absorption or adsorption. In the desorption process, the adsorbed substance (such as carbon dioxide gas) is released from the adsorbent by pressurization, decompression or heating.

[0050] The direct air carbon capture control method and device, controller, system, and medium provided in the embodiments of the present application are specifically described through the following embodiments. First, the direct air carbon capture control method in the embodiments of the present application is described.

[0051] Figure 1 It is an optional module block diagram of the direct air carbon capture device provided in the embodiment of the present application.

[0052] Figure 1 The devices include:

[0053] The adsorption chamber 10 has an air outlet and a water inlet at a first end thereof, and an air inlet at a second end thereof;

[0054] The temperature swing adsorption module 20 is disposed inside the adsorption chamber 10;

[0055] The humidity variable adsorption module 30 is disposed inside the adsorption chamber 10 and between the gas outlet and the temperature variable adsorption module 20;

[0056] The adsorbent heating module 40 is disposed inside the adsorption chamber 10;

[0057] A humidity control module 50, the humidity control module 50 is connected to the water inlet;

[0058] When the air inlet and the air outlet are both in an open state, the air flows from the air inlet through the temperature swing adsorption module 20, and the temperature swing adsorption module 20 is used to adsorb carbon dioxide and dry the air. The dried air flows through the humidity swing adsorption module 30, and the humidity swing adsorption module 30 is used to adsorb carbon dioxide on the dried air.

[0059] When the air inlet and the air outlet are both in a closed state, the adsorbent heating module 40 is used to heat the variable temperature adsorption module 20 and the variable humidity adsorption module 30, and the humidity control module 50 is used to humidify the inside of the adsorption chamber 10. The variable temperature adsorption module 20 and the variable humidity adsorption module 30 perform a desorption action to desorb carbon dioxide gas.

[0060] The beneficial effects of the embodiments of the present application include but are not limited to: the variable humidity adsorption module 30 is arranged between the air outlet and the temperature variable adsorption module 20 to ensure that the gas first flows through the temperature variable adsorption module 20 and then flows through the variable humidity adsorption module 30 inside the adsorption chamber 10; when the air inlet and the air outlet are both in an open state, the temperature variable adsorption module 20 adsorbs carbon dioxide in the air and dries the air at the same time, and the dried air flows through the variable humidity adsorption module 30, and the variable humidity adsorption module 30 adsorbs carbon dioxide on the dried air to improve the adsorption efficiency of the variable humidity adsorption module 30; when the air inlet and the air outlet are both in a closed state, the humidity control module 50 humidifies the inside of the adsorption chamber 10, and the adsorbent heating module 40 heats the temperature variable adsorption module 20 and the variable humidity adsorption module 30 at the same time, thereby promoting the desorption efficiency of the temperature variable adsorption module 20 and the variable humidity adsorption module 30; the present application combines the temperature variable adsorption module 20 with the variable humidity adsorption module 30, which can improve the efficiency of carbon dioxide adsorption and desorption, thereby improving the carbon dioxide capture efficiency.

[0061] In some embodiments, it should be noted that the first end is the upper end of the adsorption chamber 10, and the second end is the lower end of the adsorption chamber 10. The adsorption chamber 10 is also called an adsorption-desorption tower. Specifically, the shape of the adsorption chamber 10 can be cylindrical, and the shape of the adsorption chamber 10 can also be set according to requirements without limitation.

[0062] It should be noted that the current direct air carbon capture device usually adopts a single adsorption mode for carbon capture. For example, in the temperature swing adsorption mode, the temperature swing adsorbent is only driven by temperature changes to drive its adsorption or desorption of carbon dioxide; in the humidity swing adsorption mode, the humidity swing adsorbent is only driven by humidity changes to drive its adsorption or desorption of carbon dioxide. The carbon dioxide capture efficiency of the above two adsorption modes is relatively low. The embodiment of the present application combines the above two adsorption modes. The drying effect of the temperature swing adsorption module 20 on the air can improve the adsorption efficiency of the humidity swing adsorption module 30. The temperature change simultaneously promotes the desorption process of the above two adsorption modules (temperature swing adsorption module 20 and humidity swing adsorption module 30), thereby jointly improving the carbon dioxide capture efficiency.

[0063] In some embodiments, for example, during the normal temperature and low humidity adsorption process, the temperature swing adsorption module 20 has a certain drying effect, and can dry the air to reduce the humidity of the air, so that the dried air flows through the variable humidity adsorption module 30, and the variable humidity adsorption module 30 is more efficient in adsorbing carbon dioxide to the dried air, thereby improving the adsorption efficiency; during the high temperature and high humidity desorption process, the adsorbent heating module 40 can heat the variable humidity adsorption module 30 while heating the temperature swing adsorption module 20, thereby promoting the desorption of the variable humidity adsorbent, thereby achieving the effect of the above two adsorption modules promoting each other and more fully desorbing. It can be seen that the two adsorption modes, the temperature swing adsorption mode and the variable humidity adsorption mode, have complementary advantages in mechanism, which can improve the efficiency of carbon dioxide adsorption and desorption, so as to improve the carbon dioxide capture efficiency.

[0064] It should be noted that, in theory, the variable humidity adsorbent only needs to realize the adsorption and desorption of carbon dioxide based on the humidity change; however, in reality, it is difficult to ensure that the variable humidity adsorbent completely desorbs and desorbs carbon dioxide gas with a single water vapor humidification, thereby reducing the overall carbon dioxide capture efficiency. In order to solve the above problem, the embodiment of the present application heats the variable humidity adsorbent in the variable humidity adsorption module 30, so as to promote the carbon dioxide molecules to separate from the points where they are combined with the variable humidity adsorbent molecules, thereby more fully desorbing carbon dioxide.

[0065] In some embodiments, it should be noted that the joint use of the above two adsorption modules can not only improve the carbon dioxide capture efficiency, but also reduce the energy consumption per unit carbon dioxide capture amount. Specifically, the total carbon dioxide capture amount of the direct air carbon capture device in the embodiment of the present application will be greater than the sum of the carbon dioxide capture amount of the temperature swing adsorption module 20 used alone and the carbon dioxide capture amount of the humidity swing adsorption module 30 used alone, that is, the total carbon dioxide capture amount is greatly increased. And because the energy consumption per unit carbon dioxide capture amount is equal to the total energy consumption of the direct air carbon capture device divided by the total capture amount, it is possible to reduce the energy consumption per unit carbon dioxide capture amount, thereby reducing the cost of capturing unit carbon dioxide.

[0066] In some embodiments, the temperature swing adsorption module 20 includes a temperature swing adsorbent and a first adsorbent carrier medium, and the temperature swing adsorbent is arranged on the first adsorbent carrier medium. The humidification adsorption module 30 includes a humidification adsorbent and a second adsorbent carrier medium, and the humidification adsorbent is arranged on the second adsorbent carrier medium. Specifically, the first adsorbent carrier medium is a water-absorbing MOF (Metal-Organic Frameworks, MOF) for drying the gas. It should be noted that water vapor in the air will cause the adsorption efficiency of the temperature swing adsorption module 20 to decrease. If an additional drying module is arranged inside the adsorption chamber 10, the air flow pressure drop may be increased, the adsorption effect of the temperature swing adsorption module 20 may be reduced, and the complexity of the device may also be increased. In order to avoid the influence of the additional drying module on the adsorption effect of the temperature swing adsorption module 20, the embodiment of the present application adopts a water-absorbing MOF as the first adsorbent carrier medium of the temperature swing adsorption module 20, so that the temperature swing adsorption module 20 is directly used to dry the air, while improving the adsorption efficiency of the humidification adsorption module 30, the adsorption efficiency of the temperature swing adsorption module 20 is also ensured.

[0067] In some embodiments, specifically, solid amine based temperature swing adsorbents may be employed.

[0068] In another embodiment, the device may further include an intracavity drying module, which is disposed inside the adsorption chamber 10 and between the temperature swing adsorption module 20 and the humidity swing adsorption module 30, so as to dry the gas that has flowed through the temperature swing adsorption module 20 to avoid affecting the adsorption effect of the temperature swing adsorption module 20. Specifically, the intracavity drying module may be a water-absorbing MOF.

[0069] In some embodiments, the humidity control module 50 needs to consume electrical energy to generate water vapor to humidify the interior of the adsorption chamber 10. To this end, the device also includes a power supply module, which is connected to the humidity control module 50 and is used to supply power to the humidity control module 50. Specifically, the power supply module can be a solar panel to facilitate flexible deployment and meet the power requirements of the humidity control module 50. In another embodiment, the device can also be connected to the power grid, that is, the humidity control module 50 is connected to the power supply interface of the power grid.

[0070] See also Figure 2 In some embodiments, the humidity swing adsorption module 30, the temperature swing adsorption module 20 and the adsorbent heating module 40 are sequentially disposed inside the adsorption chamber 10 along a direction from the first end to the second end.

[0071] The advantage of this embodiment is that the variable humidity adsorption module 30, the variable temperature adsorption module 20 and the adsorbent heating module 40 are arranged in sequence, so the distance between the adsorbent heating module 40 and the variable temperature adsorption module 20 is closer than the distance between the adsorbent heating module 40 and the variable humidity adsorption module 30, and the adsorbent heating module 40 is mainly used to heat the variable temperature adsorption module 20; while the adsorbent heating module 40 heats the variable temperature adsorption module 20, the adsorbent heating module 40 can also heat the variable humidity adsorption module 30, thereby promoting the desorption of the variable humidity adsorption module 30 and improving the carbon dioxide desorption efficiency of the variable humidity adsorption module 30. Furthermore, the variable humidity adsorption module 30, the variable temperature adsorption module 20 and the adsorbent heating module 40 are sequentially arranged along the direction from the first end to the second end, which can ensure that after the air enters the adsorption chamber 10 from the air inlet, it first flows through the variable temperature adsorption module 20 and then flows through the variable humidity adsorption module 30, so as to ensure that the variable temperature adsorption module 20 first dries the air, and the variable humidity adsorption module 30 performs carbon dioxide adsorption on the dried air, thereby promoting the carbon dioxide adsorption of the variable humidity adsorption module 30 and improving the carbon dioxide adsorption efficiency.

[0072] It should be noted that since the distance between the adsorbent heating module 40 and the temperature swing adsorption module 20 is closer than the distance between the adsorbent heating module 40 and the humidity swing adsorption module 30, most of the heat generated by the adsorbent heating module 40 is used to heat the temperature swing adsorption module 20, and the waste heat of the adsorbent heating module 40, that is, other heat, can also be used to promote the desorption process of the humidity swing adsorption module 30, so that the humidity swing adsorbent in the humidity swing adsorption module 30 is fully desorbed, thereby improving the overall energy utilization efficiency of the direct air carbon capture device.

[0073] It should be noted that the direction from the first end to the second end refers to the vertical direction from the upper end of the adsorption chamber 10 to the lower end of the adsorption chamber 10. Figure 2 In , arrows are used to indicate the direction of flow of a gas or liquid. For example, Figure 2 The green arrow in the figure can be used to indicate the flow direction of air or carbon dioxide gas, and the blue arrow is used to indicate the flow direction of water, specifically the flow direction of water in a water pipeline. In some embodiments, the air inlet and the water outlet are controlled by the same throttle valve. In another embodiment, the device can be provided with one or more throttle valves to control the flow of gas or water. For example, the throttle valve at the air inlet can be controlled to close to prevent air from flowing into the adsorption chamber 10. An electric valve can be used as the throttle valve, or other types of valves can be used as the throttle valve, without limitation.

[0074] In some embodiments, specifically, the adsorbent heating module 40 may be an infrared heating module, such as an infrared heater, so as to perform heating under a vacuum state.

[0075] See also Figure 2In some embodiments, the temperature swing adsorption module 20 and the humidity swing adsorption module 30 are separately disposed inside the adsorption chamber 10 .

[0076] The advantage of this embodiment is that the temperature-variable adsorption module 20 and the humidity-variable adsorption module 30 are separated from each other, which avoids the temperature-variable adsorption module 20 directly transferring heat to the humidity-variable adsorption module 30 during heating to make its temperature too high; the embodiment of the present application can eliminate the interference factor of heat conduction between the above-mentioned two adsorption modules, and only heats the humidity-variable adsorption module 30 through the adsorbent heating module 40 to accurately control the temperature of the humidity-variable adsorption module 30 to promote the desorption efficiency of the humidity-variable adsorption module 30.

[0077] It should be noted that the humidity variable adsorption module 30 can perform desorption operation under high temperature and high humidity conditions.

[0078] See also Figure 2 In some embodiments, the direct air carbon capture device further comprises:

[0079] An outlet gas control module 60, the outlet gas control module 60 includes a vacuum pump 61 and a carbon dioxide collection module 62;

[0080] One end of the vacuum pump 61 is connected to the gas outlet, and the other end of the vacuum pump 61 is connected to the carbon dioxide collection module 62;

[0081] The vacuum pump 61 is used to evacuate the interior of the adsorption chamber 10 so that the interior of the adsorption chamber 10 is in a vacuum state, so that the variable temperature adsorption module 20 and the variable humidity adsorption module 30 can desorb carbon dioxide gas; the vacuum pump 61 is also used to extract the desorbed carbon dioxide gas from the gas outlet so that the carbon dioxide gas can be collected in the gas collection device.

[0082] The advantage of this embodiment is that before the desorption process, the interior of the adsorption chamber 10 is first evacuated by the vacuum pump 61, thereby removing other gas impurities inside the adsorption chamber 10 and improving the purity of the subsequently desorbed carbon dioxide gas. In addition, the vacuum state (i.e., negative pressure environment) is conducive to fully desorbing the carbon dioxide gas from the variable temperature adsorption module 20 and the variable humidity adsorption module 30.

[0083] In some embodiments, specifically, the gas collection device may be a carbon dioxide collection tank. In another embodiment, the gas collection device may also be a carbon dioxide collection bag, or other airtight devices that can be used to store gas, which is not limited in the embodiments of the present application.

[0084] See also Figure 2 , in some embodiments, the outlet gas control module 60 further includes a gas drying module 63;

[0085] The gas drying module 63 is connected between the gas outlet and one end of the vacuum pump 61 ; the gas drying module 63 is used to dry the desorbed carbon dioxide gas.

[0086] The advantage of this embodiment is that the desorbed carbon dioxide gas is dried by the gas drying module 63 to improve the purity of the carbon dioxide gas.

[0087] See also Figure 2 and Figure 3 , in some embodiments, the humidity control module 50 includes a water mist generator 51, a water flow meter, a water temperature sensor, and a water pressure sensor; the device also includes a water mist spray head 70;

[0088] The water mist spray head 70 is disposed inside the adsorption chamber 10, and the water mist generator 51 is connected to the water mist spray head 70; the water flow meter, the water temperature sensor and the water pressure sensor are respectively connected to the water mist generator 51;

[0089] The water mist generator 51 is used to atomize water so that the water mist is sprayed from the water mist spray head 70 onto the humidification adsorption module 30 .

[0090] The advantage of this embodiment is that the water mist generator 51 atomizes water so that the water mist is sprayed from the water mist spray head 70 to the variable humidity adsorption module 30 to humidify the variable humidity adsorption module 30 so that the variable humidity adsorption module 30 desorbs carbon dioxide gas.

[0091] It should be noted that the water flow meter is used to detect the water flow, the water temperature sensor is used to detect the water temperature, and the water pressure sensor is used to detect the water pressure. Figure 3 In the figure, the green arrow can be used to indicate the flow direction of air, the yellow arrow is used to indicate the flow direction of carbon dioxide gas, and the blue arrow is used to indicate the flow direction of water, which can be the flow direction of water in a water pipe. It is understandable that due to the overlap of the flow directions, some arrows can also be used to indicate the flow direction of other types of substances, for example, the green arrow connected to the air outlet can also be used to indicate the flow direction of carbon dioxide gas, which is not limited in the embodiments of the present application.

[0092] See also Figure 2 and Figure 3 In some embodiments, the direct air carbon capture device further comprises:

[0093] Inlet gas control module 80; the inlet gas control module 80 includes an air pump 81, an air heating module 82, an air flow meter, an air pressure sensor, an air temperature sensor and an air humidity sensor;

[0094] Among them, the air pump 81 is connected to the air heating module 82, and the air heating module 82 is connected to the air inlet; the air heating module 82, the air flow meter, the air pressure sensor, the air temperature sensor and the air humidity sensor are respectively connected to the air heating module 82; the air pump 81 is used to drive the air so that the air flows through the air heating module 82 and flows into the adsorption chamber 10 from the air inlet.

[0095] The advantage of this embodiment is that the air is driven by the air pump 81 to flow into the adsorption chamber 10 from the air inlet, and the air is heated by the air heating module 82 before entering the adsorption chamber 10 .

[0096] It should be noted that the air heating module 82 can heat the air to room temperature (eg, 25 degrees Celsius) so that the temperature swing adsorption module 20 and the humidity swing adsorption module 30 can adsorb carbon dioxide from the air at room temperature to achieve normal temperature adsorption.

[0097] See also Figure 2 and Figure 3 In some embodiments, the direct air carbon capture device further comprises:

[0098] A support seat, the support seat is connected to the adsorption chamber 10, and the support seat is used to support the direct air carbon capture device;

[0099] A weighing platform, on which the support base is placed, and the weighing platform is used to weigh the total weight of the direct air carbon capture device and the gas inside the adsorption chamber 10;

[0100] The flow equalizing plate is arranged inside the adsorption chamber 10 , and the flow equalizing plate is arranged between the air inlet and the temperature variable adsorption module 20 ; the flow equalizing plate is used to make the air flow into the adsorption chamber 10 evenly.

[0101] The advantages of this embodiment are that the stability of the air carbon capture device is improved by the support base, the change in gas weight in the device during carbon dioxide adsorption and desorption is detected by the weighing platform, and the flow equalizing plate is used to make the air flow evenly into the adsorption chamber 10.

[0102] It should be noted that in Figure 3 In the description, the weighing table surface refers to the surface of the weighing table, and specifically may be the upper surface of the weighing table. Specifically, the support seat may be a bracket for supporting the direct air carbon capture device.

[0103] In some embodiments, the direct air carbon capture device further includes: a carbon dioxide concentration sensor, an intracavity temperature sensor, an intracavity humidity sensor, and an intracavity pressure sensor (not shown in the figure);

[0104] The carbon dioxide concentration sensor, the intracavity temperature sensor, the intracavity humidity sensor, and the intracavity pressure sensor are all arranged inside the adsorption chamber 10; the carbon dioxide concentration sensor is used to detect the carbon dioxide concentration inside the adsorption chamber 10, the intracavity temperature sensor is used to detect the temperature inside the adsorption chamber 10, the intracavity humidity sensor is used to detect the humidity inside the adsorption chamber 10, and the intracavity pressure sensor is used to detect the pressure inside the adsorption chamber 10.

[0105] The advantage of this embodiment is that the carbon dioxide concentration inside the adsorption chamber 10 is detected by a carbon dioxide concentration sensor, the temperature inside the adsorption chamber 10 is detected by an intra-cavity temperature sensor, the humidity inside the adsorption chamber 10 is detected by an intra-cavity humidity sensor, and the pressure inside the adsorption chamber 10 is detected by an intra-cavity pressure sensor, thereby realizing real-time measurement of various parameters (such as temperature and humidity) inside the adsorption chamber 10, so as to control the adsorbent heating module 40 to heat, or open or close the air inlet and the air outlet according to the above parameters, so as to realize the adsorption and desorption process of carbon dioxide.

[0106] Specifically, the intra-cavity pressure sensor is used to detect the air pressure inside the adsorption cavity 10 .

[0107] See also Figure 4 In some embodiments, during the adsorption process, the direction of air flow is shown by the green arrow. The air pump 81 drives the air, and the air flows through the air heating module 82, the air temperature sensor, the air pressure sensor, the air flow meter, the throttle valve, the air humidity sensor, and the throttle valve at the air inlet, and then enters the adsorption chamber 10 from the air inlet; the air flows through the adsorbent heating module 40, the variable temperature adsorption module 20, and the variable humidity adsorption module 30, and is discharged from the air outlet. Specifically, a throttle valve may be provided at the air outlet to control the opening and closing of the air outlet. During the vacuuming process, the residual gas inside the adsorption chamber 10 is extracted from the air outlet by the vacuum pump 61. In another embodiment, a throttle valve may also be provided at the vacuum pump 61. The gas in the vacuuming process may flow through the gas drying module 63, without limitation.

[0108] See also Figure 5In some embodiments, during the desorption process, the flow direction of the carbon dioxide gas is as shown by the yellow arrow, and the flow direction of the water is as shown by the blue arrow. The water flows through the water flow meter, the water mist generator 51, the water temperature sensor, and the water pressure sensor. The water mist (water vapor) generated by the water mist generator 51 is sprinkled on the variable humidity adsorption module 30 from the water mist spray head 70, and the excess water flows out from the water outlet pipe at the lower end of the adsorption chamber 10. In addition, the adsorbent heating module 40 performs a heating action. Under high temperature and high humidity conditions, both the variable temperature adsorption module 20 and the variable humidity adsorption module 30 desorb carbon dioxide gas. Then, the vacuum pump 61 extracts the carbon dioxide gas; the carbon dioxide gas flows from the gas outlet through the gas drying module 63 and the vacuum pump 61 and is collected in the gas collection device.

[0109] In some embodiments, the direct air carbon capture device can be used in outdoor environments. For example, the device is suitable for outdoor atmospheric scenes with carbon dioxide concentrations as low as 400 ppm. In outdoor deployment, the device can capture and collect up to one hundred tons of carbon dioxide per year. In another embodiment, the device can also be used in environments where people are relatively crowded, such as indoor scenes where people are relatively crowded, or outdoor scenes with dense traffic. In environments where people are relatively crowded, the concentration of carbon dioxide in the air will increase significantly, for example, the concentration of carbon dioxide can reach 1000 ppm or more than 2000 ppm, which will lead to an increase in the adsorption efficiency of the device. The device can also reduce the concentration of carbon dioxide, while also regulating air humidity and improving indoor air quality, making the user experience in crowded places more comfortable.

[0110] Figure 6 is an optional flow chart of the direct air carbon capture control method provided in the embodiment of the present application. Figure 6 The method is applied to the above-mentioned direct air carbon capture device, and the method may include but is not limited to steps 101 to 102.

[0111] Step 101, controlling the air inlet and the air outlet of the adsorption chamber to open, so that the air flows from the air inlet through the temperature swing adsorption module and the humidity swing adsorption module, and is discharged from the air outlet, so that the temperature swing adsorption module performs carbon dioxide adsorption and drying on the air, and the dried air flows through the humidity swing adsorption module, so that the humidity swing adsorption module performs carbon dioxide adsorption on the dried air;

[0112] Step 102, when the predetermined conditions are met, the air inlet and the air outlet are controlled to be closed, the adsorbent heating module is controlled to heat the temperature swing adsorption module and the humidity variable adsorption module, and the humidity control module is controlled to humidify the adsorption chamber, so that the temperature swing adsorption module and the humidity variable adsorption module desorb carbon dioxide gas.

[0113] The beneficial effects of the embodiments of the present application include but are not limited to: opening the air inlet and the air outlet, and the air flows from the air inlet first through the variable temperature adsorption module and then through the variable humidity adsorption module; the variable temperature adsorption module adsorbs carbon dioxide in the air and also dries the air at the same time, and the dried air flows through the variable humidity adsorption module, so that the variable humidity adsorption module adsorbs carbon dioxide on the dried air to improve the adsorption efficiency of the variable humidity adsorption module; when predetermined conditions are met, the air inlet and the air outlet are controlled to be closed, the humidity control module humidifies the inside of the adsorption chamber, and the adsorbent heating module heats the variable temperature adsorption module and the variable humidity adsorption module at the same time, thereby promoting the desorption efficiency of the variable temperature adsorption module and the variable humidity adsorption module; the present application combines the variable temperature adsorption module with the variable humidity adsorption module, which can improve the efficiency of carbon dioxide adsorption and desorption, thereby improving the carbon dioxide capture efficiency.

[0114] In step 101 of some embodiments, the volume fraction of carbon dioxide in the air is a normal value of the atmosphere, such as 400 ppm (parts per million, ppm).

[0115] In step 102 of some embodiments, the predetermined conditions may include: the air inlet and the air outlet are opened for a time greater than a preset time (such as 6 minutes), or the air inlet and the air outlet are opened by the user, etc. The predetermined conditions may also be set according to the requirements, without limitation thereto.

[0116] See also Figure 7 In some embodiments, in step 102, controlling the adsorbent heating module to heat the temperature swing adsorption module and the humidity swing adsorption module, and controlling the humidity control module to humidify the adsorption chamber, so that the temperature swing adsorption module and the humidity swing adsorption module desorb carbon dioxide gas, may include but is not limited to steps 201 to 202:

[0117] Step 201, controlling the vacuum pump to evacuate the adsorption chamber so that the adsorption chamber is in a vacuum state;

[0118] Step 202, controlling the humidity control module to humidify the adsorption chamber, and controlling the adsorbent heating module to heat the temperature swing adsorption module and the humidity swing adsorption module, so that the temperature swing adsorption module and the humidity swing adsorption module perform desorption action in a vacuum state to desorb carbon dioxide gas.

[0119] The advantage of this embodiment is that the vacuum pump is controlled to evacuate the adsorption chamber so that the adsorption chamber is in a vacuum state, and then the humidity control module is controlled to humidify the adsorption chamber, and the adsorbent heating module is controlled to heat the variable temperature adsorption module and the variable humidity adsorption module, so that the variable temperature adsorption module and the variable humidity adsorption module can fully desorb carbon dioxide gas under a vacuum state, thereby improving the desorption efficiency of carbon dioxide.

[0120] In step 201 of some embodiments, the air pressure inside the adsorption chamber may be 0.9 atmospheres in a vacuum state. In another embodiment, the vacuum pump may be controlled to evacuate the adsorption chamber according to a preset evacuation time.

[0121] In step 202 of some embodiments, after desorbing the carbon dioxide gas, the air pressure inside the adsorption chamber can be detected to detect the carbon dioxide gas according to the air pressure detection result. For example, the air pressure inside the adsorption chamber is detected by an intracavity pressure sensor, and when the air pressure inside the adsorption chamber is greater than or equal to a preset air pressure threshold, the throttle valve of the air outlet at the upper end of the adsorption chamber is opened, and the vacuum pump is controlled to extract the desorbed carbon dioxide gas out of the adsorption chamber, and the carbon dioxide gas is collected in a gas collection device.

[0122] In an application example, the carbon dioxide capture process corresponding to the direct air carbon capture device is as follows:

[0123] (1) Normal temperature and low humidity adsorption process, specifically including:

[0124] The air inlet and air outlet of the adsorption chamber are controlled to be open. In this case, the environment in the adsorption chamber is interconnected with the atmospheric environment. The air pump extracts air from the environment and pumps it into the adsorption chamber through the gas pipeline. The air flows through the air heating module and the air flow meter and enters the adsorption chamber from the air inlet at the lower end of the adsorption chamber. In this process, the air temperature sensor, the air pressure sensor, and the air humidity sensor measure the instantaneous state of the gas in real time. At this time, the adsorption chamber is in a normal temperature and low humidity condition. After the air passes through the flow equalizing plate, it flows from bottom to top through the layered variable temperature adsorbent and variable humidity adsorbent. The variable temperature adsorption module adsorbs carbon dioxide in the air at room temperature (about 25 degrees Celsius). At the same time, due to the porous physical properties of the variable temperature adsorption module, the variable temperature adsorption module also adsorbs part of the water vapor in the air. Specifically, the variable temperature adsorbent in the variable temperature adsorption module is a solid amine adsorbent. The small amount of water vapor molecules adsorbed by the variable temperature adsorption module can not only promote the combination of carbon dioxide molecules and solid amine molecules, but also dry the air to reduce the humidity of the air. The dried air is fully in contact with the variable humidity adsorption module, and the second adsorption of carbon dioxide occurs, thereby promoting the adsorption of carbon dioxide by the variable humidity adsorption module. It can be seen that the device not only enables the airflow to fully contact with the two adsorption modules mentioned above, but also improves the adsorption efficiency of the variable humidity adsorption module by taking advantage of the moisture absorption characteristics of the variable temperature adsorption module.

[0125] (2) Vacuuming process, specifically including:

[0126] After both the variable temperature adsorption module and the variable humidity adsorption module are close to the saturation state, the air inlet and outlet are controlled to be closed to ensure the air tightness of the adsorption chamber. The vacuum pump is controlled to quickly extract the remaining air inside the adsorption chamber and discharge it into the atmosphere. During the vacuuming process, the vacuum degree inside the adsorption chamber can reach 0.9 atmospheres. The air pressure inside the adsorption chamber can be detected in real time by the pressure sensor. When the air pressure inside the adsorption chamber is lower than the preset air pressure threshold, turn off the vacuum pump, keep the air inlet and outlet closed, and connect the vacuum pump to the carbon dioxide collection tank to prepare for the subsequent high temperature and high humidity desorption process. The purpose of the vacuuming process is to remove the impurity gas inside the adsorption chamber to improve the purity of the collected carbon dioxide. At the same time, the negative pressure state inside the adsorption chamber is conducive to the full desorption of carbon dioxide.

[0127] (3) High temperature and high humidity desorption process, specifically including:

[0128] The air inlet and the air outlet are still in a closed state. Turn on the water mist generator and the water mist spray head, and the water mist enters the adsorption chamber to quickly increase the humidity inside the adsorption chamber; at the same time, turn on the adsorbent heating module to quickly increase the temperature inside the adsorption chamber by thermal radiation in a vacuum environment. The changes in temperature and humidity inside the adsorption chamber can be detected in real time by the in-cavity temperature sensor and the in-cavity humidity sensor. In the above process, the humidity inside the adsorption chamber rises to the working humidity of the desorption state of the variable humidity adsorption module, such as a relative humidity of 90% or more; the temperature inside the adsorption chamber rises to the working temperature of the desorption state of the variable temperature adsorption module, such as between 90 and 100 degrees Celsius. Under this high temperature and high humidity condition, the variable temperature adsorption module and the variable humidity adsorption module desorb carbon dioxide. The rise in air pressure inside the adsorption chamber can be detected by the in-cavity pressure sensor. When the air pressure inside the adsorption chamber rises back to a certain air pressure threshold, open the air inlet and outlet, control the vacuum pump to extract the desorbed carbon dioxide gas, and the carbon dioxide gas flows along the gas channel (such as the gas pipeline) through the gas drying module and the vacuum pump, and enters the gas collection device to realize the collection of carbon dioxide. The vacuum pump continues to work until the air pressure inside the adsorption chamber drops back to a state close to vacuum again. This shows that the carbon dioxide molecules in the variable temperature adsorption module and the variable humidity adsorption module have been fully released. Turn off the adsorbent heating module, the water mist generator, the water mist spray head and the vacuum pump, disconnect the gas collection device from the vacuum pump, and complete the carbon dioxide collection process. Finally, open the air inlet and outlet at both ends of the adsorption chamber so that the environment inside the adsorption chamber is interconnected with the atmospheric environment, and the adsorption chamber is naturally cooled and dried to achieve normal temperature and low humidity conditions, ready to enter the next cycle of carbon dioxide capture process.

[0129] An embodiment of the present application further provides a controller, which includes a memory and a processor. The memory stores a computer program, and the processor implements the above-mentioned direct air carbon capture control method when executing the computer program.

[0130] It should be noted that the controller may include any intelligent terminal such as a tablet computer, a vehicle-mounted computer, etc.

[0131] See also Figure 8 , Figure 8 The hardware structure of a controller of another embodiment is illustrated, and the controller includes:

[0132] The processor 801 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0133] The memory 802 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 802 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 802, and the processor 801 is called to execute the direct air carbon capture control method of the embodiment of the present application;

[0134] Input / output interface 803, used to implement information input and output;

[0135] The communication interface 804 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WIFI, Bluetooth, etc.);

[0136] A bus 805 that transmits information between the various components of the device (e.g., the processor 801, the memory 802, the input / output interface 803, and the communication interface 804);

[0137] The processor 801 , the memory 802 , the input / output interface 803 and the communication interface 804 are connected to each other in communication within the device via a bus 805 .

[0138] See also Fig. 9 The embodiment of the present application also provides a direct air carbon capture control system, which includes: the above-mentioned direct air carbon capture device, and the above-mentioned controller; the controller is communicatively connected to the direct air carbon capture device.

[0139] The specific implementation of the direct air carbon capture control system is substantially the same as the specific implementation of the direct air carbon capture control method described above, and will not be described in detail herein.

[0140] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the direct air carbon capture control method described above is implemented.

[0141] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0142] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0143] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0144] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0145] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0146] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0147] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0148] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0149] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0150] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0151] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0152] The preferred embodiments of the present application are described above with reference to the accompanying drawings, but the scope of the rights of the present application is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present application should be within the scope of the rights of the present application.

Claims

1. A direct air carbon capture device, characterized in that: The device comprises: An adsorption chamber, wherein a first end of the adsorption chamber has an air outlet and a water inlet, and a second end of the adsorption chamber has an air inlet; A temperature swing adsorption module, wherein the temperature swing adsorption module is arranged inside the adsorption chamber; A humidity variable adsorption module, the humidity variable adsorption module is arranged inside the adsorption chamber and between the gas outlet and the temperature variable adsorption module; An adsorbent heating module, wherein the adsorbent heating module is disposed inside the adsorption chamber; A humidity control module, the humidity control module is connected to the water inlet; Wherein, when the air inlet and the air outlet are both in an open state, the air flows from the air inlet through the temperature swing adsorption module, the temperature swing adsorption module is used to perform carbon dioxide adsorption and drying on the air, and the dried air flows through the humidity swing adsorption module, the humidity swing adsorption module is used to perform carbon dioxide adsorption on the dried air; When the air inlet and the air outlet are both in a closed state, the adsorbent heating module is used to heat the temperature-variable adsorption module and the humidity-variable adsorption module, the humidity control module is used to humidify the inside of the adsorption chamber, and the temperature-variable adsorption module and the humidity-variable adsorption module perform a desorption action to desorb carbon dioxide gas.

2. The device according to claim 1, characterized in that The humidity swing adsorption module, the temperature swing adsorption module and the adsorbent heating module are sequentially arranged inside the adsorption chamber along a direction from the first end to the second end.

3. The device according to claim 1, characterized in that The temperature swing adsorption module and the humidity swing adsorption module are separately arranged inside the adsorption chamber.

4. The device according to any one of claims 1 to 3, characterized in that The device also includes: An outlet gas control module, the outlet gas control module comprising a vacuum pump and a carbon dioxide collection module; One end of the vacuum pump is connected to the gas outlet, and the other end of the vacuum pump is connected to the carbon dioxide collection module; The vacuum pump is used to evacuate the interior of the adsorption chamber so that the interior of the adsorption chamber is in a vacuum state, so that the temperature-variable adsorption module and the humidity-variable adsorption module can desorb carbon dioxide gas; the vacuum pump is also used to extract the desorbed carbon dioxide gas from the gas outlet so that the carbon dioxide gas is collected in the gas collection device.

5. The device according to claim 4, characterized in that The outlet gas control module also includes a gas drying module; The gas drying module is connected between the gas outlet and one end of the vacuum pump; the gas drying module is used to dry the desorbed carbon dioxide gas.

6. A direct air carbon capture control method, characterized in that: The method is applied to the direct air carbon capture device according to any one of claims 1 to 5, and the method comprises: Controlling the air inlet and the air outlet of the adsorption chamber to open, so that the air flows from the air inlet through the temperature swing adsorption module and the humidity swing adsorption module, and is discharged from the air outlet, so that the temperature swing adsorption module performs carbon dioxide adsorption and drying on the air, and the dried air flows through the humidity swing adsorption module, so that the humidity swing adsorption module performs carbon dioxide adsorption on the dried air; When predetermined conditions are met, the air inlet and the air outlet are controlled to be closed, the adsorbent heating module is controlled to heat the temperature swing adsorption module and the humidity swing adsorption module, and the humidity control module is controlled to humidify the adsorption chamber, so that the temperature swing adsorption module and the humidity swing adsorption module desorb carbon dioxide gas.

7. The method according to claim 6, characterized in that The step of controlling the adsorbent heating module to heat the temperature swing adsorption module and the humidity swing adsorption module, and controlling the humidity control module to humidify the adsorption chamber, so that the temperature swing adsorption module and the humidity swing adsorption module desorb carbon dioxide gas, comprises: Controlling the vacuum pump to evacuate the adsorption chamber so that the adsorption chamber is in a vacuum state; The humidity control module is controlled to humidify the adsorption chamber, and the adsorbent heating module is controlled to heat the temperature swing adsorption module and the humidity swing adsorption module, so that the temperature swing adsorption module and the humidity swing adsorption module perform a desorption action under the vacuum state to desorb carbon dioxide gas.

8. A controller, characterized in that: The controller comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the direct air carbon capture control method according to any one of claims 6 to 7 when executing the computer program.

9. A direct air carbon capture control system, characterized in that: The system comprises: the direct air carbon capture device according to any one of claims 1 to 5, and the controller according to claim 8; The controller is communicatively coupled to the direct air carbon capture device.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the direct air carbon capture control method according to any one of claims 6 to 7 is implemented.

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