Carbon dioxide removal device and carbon dioxide removal control system

Abstract

The embodiment of the utility model provides a carbon dioxide removal device and a carbon dioxide removal control system, and belongs to the technical field of carbon emission reduction. The device comprises a reaction cabin, a cabin cover, a first electric valve, a gas conveying device and a carbon dioxide adsorption module, the reaction chamber has an opening; the cabin cover is movably connected with the reaction cabin and is used for covering the opening; the first electric valve is connected with the hatch cover and used for controlling the hatch cover to be opened or closed. The gas conveying device is movably connected with the reaction cabin; when the hatch cover is in an open state, the gas conveying device is suspended in the opening, the gas conveying device blows gas to the opening to form an air inlet, and a gap between the edge of the gas conveying device and the edge of the opening forms an air outlet, so that air flows through the carbon dioxide adsorption module from the air inlet and is discharged from the air outlet; when the hatch cover is in a closed state, the carbon dioxide adsorption module desorbs carbon dioxide gas. The embodiment of the utility model can improve the purity of the carbon dioxide gas.

Description

Technical Field

[0001] This application relates to the field of carbon emission reduction technology, and in particular to a carbon dioxide removal device and a carbon dioxide removal control system. Background Technology

[0002] Air carbon capture technologies, such as Direct Air Capture (DAC), are important carbon reduction technologies. DAC technology can directly capture and store carbon dioxide from the air to achieve emission reduction by removing carbon dioxide from the atmosphere. Currently, the purity of the carbon dioxide gas captured by DAC technology is not high.

[0003] Therefore, how to improve the purity of carbon dioxide gas has become an urgent technical problem to be solved. Utility Model Content

[0004] The main objective of this application is to provide a carbon dioxide removal device and a carbon dioxide removal control system, which aim to increase airtightness and improve the purity of carbon dioxide gas.

[0005] To achieve the above objectives, a first aspect of this application provides a carbon dioxide removal device, the device comprising:

[0006] The reaction chamber has an opening;

[0007] A hatch, movably connected to the reaction chamber, is used to cover the opening;

[0008] A first electric valve is connected to the hatch cover and is used to control the hatch cover to open or close.

[0009] A gas delivery device, which is movably connected to the reaction chamber;

[0010] A carbon dioxide adsorption module is disposed inside the reaction chamber;

[0011] When the hatch is open, the gas delivery device is suspended in the opening and blows air into the opening to form an air inlet. The gap between the edge of the gas delivery device and the edge of the opening forms an air outlet, allowing air to flow from the air inlet through the carbon dioxide adsorption module and be discharged from the air outlet. When the hatch is closed, the carbon dioxide adsorption module desorbs carbon dioxide gas.

[0012] In some embodiments, the device is placed on a horizontal plane, and the opening is located at the top of the reaction chamber;

[0013] The gas delivery device is further configured to blow air into the opening, so that the air flows in a first vertical direction at the air inlet and in a second vertical direction at the air outlet; wherein the first vertical direction is perpendicular to the horizontal plane and extends from away from the carbon dioxide adsorption module to near the carbon dioxide adsorption module; the second vertical direction is the opposite of the first vertical direction.

[0014] In some embodiments, the gas delivery device includes a blower;

[0015] The blower has a circular edge shape, and the opening has a circular edge shape; the air outlet is annular in shape, and the area ratio of the cross-section of the gas conveying device to the cross-section of the opening is greater than or equal to 50%.

[0016] In some embodiments, the reaction chamber is cylindrical, the reaction chamber includes a sidewall, and the sidewall forms a cavity to accommodate the carbon dioxide adsorption module; the gas delivery device is movably connected to a first position of the sidewall, and the chamber cover is movably connected to a second position of the sidewall, the first position and the second position being disposed opposite to each other.

[0017] In some embodiments, the apparatus further includes:

[0018] The second electric valve includes a cylinder, a first pull rod, and a second pull rod. The cylinder is connected to the first pull rod, and the first pull rod and the second pull rod are rotatably connected. The second pull rod is connected to the gas conveying device.

[0019] The cylinder is used to control the second pull rod to rotate around the first pull rod, so that the gas delivery device is suspended in the opening.

[0020] In some embodiments, the carbon dioxide adsorption module includes a carbon dioxide adsorbent, a honeycomb adsorption carrier medium, and a rectifier grid;

[0021] The carbon dioxide adsorbent is disposed on the honeycomb adsorption carrier medium; the rectifier mesh is disposed at one end of the honeycomb adsorption carrier medium facing the opening.

[0022] The carbon dioxide adsorbent is used to adsorb carbon dioxide gas in the air or desorb the carbon dioxide gas; the rectifier screen is used to prevent the carbon dioxide adsorbent from being carried out of the carbon dioxide adsorption module by the airflow.

[0023] In some embodiments, the apparatus further includes:

[0024] A vacuum pump is connected to the reaction chamber and is used to perform a vacuuming operation on the reaction chamber.

[0025] An infrared heating module is disposed inside the reaction chamber. The infrared heating module is used to heat the carbon dioxide adsorption module with infrared rays under vacuum to desorb carbon dioxide gas.

[0026] In some embodiments, the apparatus further includes:

[0027] A gas collection device, wherein the gas collection device is connected to the vacuum pump;

[0028] The vacuum pump is also used to collect the carbon dioxide gas desorbed from the carbon dioxide adsorption module into the gas collection device.

[0029] In some embodiments, the device further includes: an inlet carbon dioxide concentration meter, an outlet carbon dioxide concentration meter, a flow meter, a barometer, and a temperature sensor; the infrared heating module includes a thermostat.

[0030] The inlet carbon dioxide concentration meter, the outlet carbon dioxide concentration meter, the flow meter, the barometer, and the temperature sensor are all located inside the reaction chamber. The inlet carbon dioxide concentration meter is used to detect the carbon dioxide concentration at the air inlet; the outlet carbon dioxide concentration meter is used to detect the carbon dioxide concentration at the air outlet; the flow meter is used to detect the gas flow rate inside the reaction chamber; the barometer is used to detect the gas pressure inside the reaction chamber; and the temperature sensor is used to detect the temperature inside the reaction chamber.

[0031] The constant temperature controller is used to control the infrared heating module to heat the carbon dioxide adsorption module with infrared rays at a preset temperature, so as to maintain the temperature of the carbon dioxide adsorption module at the preset temperature.

[0032] To achieve the above objectives, a second aspect of this application provides a carbon dioxide removal control system, the system comprising: the carbon dioxide removal device described in the first aspect above, and a controller;

[0033] The controller is communicatively connected to the carbon dioxide removal device; the controller is used to control the opening or closing of the hatch via the first electric valve.

[0034] The carbon dioxide removal device and control system proposed in this application, when the hatch is open, have a gas delivery device suspended in the opening and blowing air into the opening to form an air inlet. The gap between the edge of the gas delivery device and the edge of the opening forms an air outlet. Air flows from the air inlet through the carbon dioxide adsorption module and is discharged from the air outlet. When the hatch is closed, the carbon dioxide adsorption module desorbs carbon dioxide gas. The embodiments of this application can control the opening or closing of the hatch via a first electric valve, i.e., whether the hatch covers the opening of the reaction chamber. Since both the air inlet and outlet are located within the opening, a single electric valve, i.e., the first electric valve, can be used to simultaneously control the opening or closing of both the air inlet and outlet, eliminating the need for multiple electric valves to separately control the air intake and exhaust processes of the carbon dioxide removal device. This improves the airtightness of the carbon dioxide removal device, thereby preventing insufficient airtightness from causing the air outside the reaction chamber to mix with the desorbed carbon dioxide gas inside the reaction chamber, thus improving the purity of the carbon dioxide gas. Attached Figure Description

[0035] Figure 1 This is a block diagram of the carbon dioxide removal device provided in the embodiments of this application;

[0036] Figure 2 This is a schematic diagram of the carbon dioxide removal device provided in the embodiments of this application;

[0037] Figure 3 This is a schematic diagram of the structure of a carbon dioxide removal device provided in another embodiment of this application;

[0038] Figure 4 This is an exploded view of the carbon dioxide removal device provided in the embodiments of this application;

[0039] Figure 5 This is a flowchart illustrating an application example provided in an embodiment of this application;

[0040] Figure 6 This is a block diagram of the carbon dioxide removal control system provided in the embodiments of this application.

[0041] Reference numerals: 10, reaction chamber; 20, chamber cover; 30, first electric valve; 40, gas delivery device; 41, blower; 50, carbon dioxide adsorption module; 60, second electric valve; 61, cylinder; 62, first pull rod; 63, second pull rod; 70, infrared heating module. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0043] It should be noted that although functional modules are divided in the device schematic diagram and a 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 aforementioned 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 commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0045] First, let's analyze some of the terms used in this application:

[0046] Direct air capture (DAC) is a carbon reduction technology. DAC directly captures and stores carbon dioxide from the air to achieve carbon dioxide removal from the atmosphere. This carbon reduction technology is challenging because the air contains only 0.04% carbon dioxide. The concentration of carbon dioxide in the air is about 2-3 orders of magnitude lower than other common carbon dioxide capture targets (such as flue gas from energy production and industrial processes). Currently, DAC technology is receiving widespread attention as an important and rare negative-emission carbon reduction method.

[0047] Carbon dioxide removal (CDR) refers to the process of removing carbon dioxide (CO2) from the atmosphere through human activities and storing it long-term in geological, terrestrial, or marine pools or products. CDR technology can be considered one of the solutions for reducing greenhouse gas emissions.

[0048] The carbon dioxide removal device and carbon dioxide removal control system provided in this application are specifically described through the following embodiments. First, the carbon dioxide removal device in this application embodiment is described.

[0049] Figure 1 This is an optional module block diagram of the carbon dioxide removal device provided in the embodiments of this application. The device includes:

[0050] Reaction chamber 10, the reaction chamber 10 has an opening;

[0051] The hatch 20 is movably connected to the reaction chamber 10 and is used to cover the opening.

[0052] The first electric valve 30 is connected to the hatch cover 20 and is used to control the hatch cover 20 to open or close.

[0053] Gas delivery device 40, which is movably connected to reaction chamber 10;

[0054] Carbon dioxide adsorption module 50 is installed inside the reaction chamber 10.

[0055] When the hatch 20 is in the open state, the gas delivery device 40 is suspended in the opening and blows air into the opening to form an air inlet. The gap between the edge of the gas delivery device 40 and the edge of the opening forms an air outlet, allowing air to flow from the air inlet through the carbon dioxide adsorption module 50 and be discharged from the air outlet. When the hatch 20 is in the closed state, the carbon dioxide adsorption module 50 desorbs carbon dioxide gas.

[0056] The beneficial effects of this application embodiment include, but are not limited to: when the cover 20 is in the open state, the gas delivery device 40 is suspended in the opening and blows air into the opening to form an air inlet, and the gap between the edge of the gas delivery device 40 and the edge of the opening forms an air outlet. Air flows from the air inlet through the carbon dioxide adsorption module 50 and is discharged from the air outlet. When the cover 20 is in the closed state, the carbon dioxide adsorption module 50 desorbs carbon dioxide gas. This application embodiment can control the opening or closing of the cover 20, that is, whether the cover 20 covers the opening of the reaction chamber 10, through the first electric valve 30. Since both the air inlet and the air outlet are located in the opening, a single electric valve, that is, the first electric valve 30, can be used to simultaneously control the opening or closing of the air inlet and the air outlet, eliminating the need to use multiple electric valves to separately control the air intake and exhaust processes of the carbon dioxide removal device. This improves the airtightness of the carbon dioxide removal device, thereby avoiding the mixing of air outside the reaction chamber 10 with the desorbed carbon dioxide gas inside the reaction chamber 10 due to insufficient airtightness of the device, and improving the purity of the carbon dioxide gas.

[0057] It should be noted that using a single electric valve to simultaneously control the opening or closing of the air inlet and outlet reduces the cost of the carbon dioxide removal device, expands its application scenarios and scope, and adapts to carbon capture needs of different scales.

[0058] It should be noted that when the hatch 20 is in the open state, it means that the hatch 20 is not sealed to the opening, and air can enter and exit the reaction chamber 10 through the opening. When the hatch 20 is in the closed state, it means that the hatch 20 covers the opening and is tightly sealed to the opening, so that the reaction chamber 10 is in an airtight state.

[0059] Please see Figure 2In some embodiments, the first electric valve 30 is connected to the reaction chamber 10, specifically to the outside of the reaction chamber 10.

[0060] In some embodiments, it should be noted that the gas delivery device 40 is a device, equipment, or system for delivering gas. The gas delivery device 40 may include any one of a blower 41, a fan, or a ventilator. A suitable gas delivery device 40 may be selected according to requirements, without limitation.

[0061] In some embodiments, the gas delivery device 40 is a blower 41, with a fan blade at its center. When the blower 41 is suspended in the opening, the fan blade rotates to push air through it into the reaction chamber 10. Therefore, the position of the fan blade at the center of the blower 41 in the opening forms an air inlet. After flowing through the carbon dioxide adsorption module 50, the air is discharged from the gap between the edge of the blower 41 and the edge of the opening, thus forming an air outlet.

[0062] In some embodiments, the device is placed on a horizontal surface, with the opening located at the top of the reaction chamber 10;

[0063] The gas delivery device 40 is also used to blow air into the opening so that air flows in the air inlet in a first vertical direction and in the air outlet in a second vertical direction; wherein the first vertical direction is perpendicular to the horizontal plane and extends from away from the carbon dioxide adsorption module 50 to near the carbon dioxide adsorption module 50; the second vertical direction is the opposite of the first vertical direction.

[0064] The advantage of this embodiment is that the device is placed on a horizontal plane, the opening is located at the top of the reaction chamber 10, and the air flows in and out in a direction perpendicular to the horizontal plane. Specifically, the air flows in a first vertical direction at the air inlet and in a second vertical direction different from the first vertical direction at the air outlet, so as to avoid the interference between the inflowing gas and the outflowing gas, thereby increasing the gas flow speed and improving the efficiency of carbon dioxide adsorption.

[0065] In some embodiments, when the blower 41 is suspended in the opening, the horizontal plane of the cross-section of the blower 41 is parallel to the horizontal plane of the opening, and the central blade of the blower 41 is on the same vertical line as the carbon dioxide adsorption module 50. This ensures that the air blown in by the blower 41 can flow sufficiently through the carbon dioxide adsorption module 50, improving the carbon dioxide adsorption efficiency. The first vertical direction can be the vertical direction from the central blade of the blower 41 to the carbon dioxide adsorption module 50. For example, the inner wall of the reaction chamber 10 is shaped as a cylinder with an open top, the carbon dioxide adsorption module 50 is located on the central axis of the reaction chamber 10, and the central blade of the blower 41 is on the same vertical line as the carbon dioxide adsorption module 50. That is, the first vertical direction can be on the central axis of the cylindrical reaction chamber 10. Compared with the first vertical direction, the second vertical direction is closer to the inner wall of the reaction chamber 10, that is, closer to the edge of the opening.

[0066] Please see Figure 2 In some embodiments, the gas delivery device 40 includes a blower 41;

[0067] The blower 41 has a circular edge shape, and the opening has a circular edge shape; the air outlet is annular in shape, and the area ratio of the cross-section of the gas conveying device 40 to the cross-section of the opening is greater than or equal to 50%.

[0068] The advantage of this embodiment is that the air outlet formed between the edge of the blower 41 and the edge of the opening is annular, which facilitates the flow of gas out of the reaction chamber 10, increases the gas flow speed, and avoids obstruction of gas flow, preventing gas already adsorbed by the carbon dioxide adsorption module 50 from remaining in the reaction chamber 10. Furthermore, the area ratio of the cross-section of the gas delivery device 40 to the cross-section of the opening is greater than or equal to 50%, to prevent the air outlet formed by the gap between the edge of the gas delivery device 40 and the edge of the opening from being too large, causing a large amount of air to be discharged from the air outlet before flowing through the carbon dioxide adsorption module 50. In summary, this embodiment ensures that the carbon dioxide adsorption module 50 adsorbs carbon dioxide from the air, improving the efficiency of carbon dioxide adsorption.

[0069] In some embodiments, specifically, the blower 41 may be conical in shape.

[0070] In some embodiments, the reaction chamber 10 is cylindrical, and the reaction chamber 10 includes a side wall, and the side wall is formed with a cavity to accommodate the carbon dioxide adsorption module 50; the gas delivery device 40 is movably connected to a first position of the side wall, and the cover 20 is movably connected to a second position of the side wall, with the first position and the second position being disposed opposite to each other.

[0071] The advantage of this embodiment is that the gas delivery device 40 is movably connected to the first position, and the hatch cover 20 is movably connected to the second position. The first position and the second position are respectively arranged on the side wall of the cylindrical reaction chamber 10, thereby ensuring that there is sufficient space between the gas delivery device 40 and the hatch cover 20, avoiding collision between the hatch cover 20 and the gas delivery device 40 when it is opened or closed, and improving the safety and reliability of the carbon dioxide removal device.

[0072] Please see Figure 3 In some embodiments, the carbon dioxide removal device further includes: a second electric valve 60, the second electric valve 60 including a cylinder 61, a first pull rod 62 and a second pull rod 63, the cylinder 61 is connected to the first pull rod 62, the first pull rod 62 and the second pull rod 63 are rotatably connected, and the second pull rod 63 is connected to the gas delivery device 40;

[0073] Cylinder 61 is used to control the second pull rod 63 to rotate around the first pull rod 62 so that the gas delivery device 40 is suspended in the opening.

[0074] The advantage of this embodiment is that the second pull rod 63 is controlled by the cylinder 61 to rotate around the first pull rod 62, thereby driving the gas delivery device 40 connected to the second pull rod 63 to be suspended in the opening. Thus, the gas delivery device 40 performs a blowing action to form an air inlet and an air outlet, thereby achieving the adsorption of carbon dioxide in the air.

[0075] In some embodiments, specifically, an electric push rod can be used instead of the cylinder 61 as the driving device for the first pull rod 62 and the second pull rod 63.

[0076] In some embodiments, the carbon dioxide adsorption module 50 includes a carbon dioxide adsorbent, a honeycomb adsorption carrier medium, and a rectifier grid.

[0077] The carbon dioxide adsorbent is disposed on the honeycomb adsorption carrier medium; the rectifier mesh is disposed at the end of the honeycomb adsorption carrier medium facing the opening.

[0078] The carbon dioxide adsorbent is used to adsorb carbon dioxide gas in the air or desorb carbon dioxide gas; the rectifier screen is used to prevent the carbon dioxide adsorbent from being carried out of the carbon dioxide adsorption module 50 by the airflow.

[0079] The advantage of this embodiment is that the use of a honeycomb adsorption carrier medium can fully adsorb carbon dioxide in the air; the use of a rectifier net can effectively prevent the carbon dioxide adsorbent from being carried out of the carbon dioxide adsorption module 50 by the airflow, thereby jointly improving the efficiency of carbon dioxide removal.

[0080] In some embodiments, the adsorbent may be an amine-supported solid adsorbent, such as a solid amine adsorbent. In another embodiment, the adsorbent may be coated onto a high-temperature resistant, porous, and high-surface-area honeycomb adsorbent carrier medium, thereby improving the efficiency of carbon dioxide removal.

[0081] Please see Figure 4 In some embodiments, the carbon dioxide removal device further includes:

[0082] A vacuum pump (not shown in the figure) is connected to the reaction chamber 10 and is used to evacuate the reaction chamber 10.

[0083] An infrared heating module 70 is installed inside the reaction chamber 10. The infrared heating module 70 is used to heat the carbon dioxide adsorption module 50 with infrared rays under vacuum to desorb carbon dioxide gas.

[0084] The advantage of this embodiment is that the carbon dioxide adsorption module 50 can be heated in a vacuum state by means of a vacuum pump and an infrared heating module 70, so as to avoid the residual air inside the reaction chamber 10 from affecting the purity of the carbon dioxide gas desorbed by the carbon dioxide adsorption module 50.

[0085] It should be noted that in current air carbon capture processes, because heat transfer is required through the air medium to heat the carbon dioxide adsorption module 50, the carbon dioxide removal device often contains residual air, which significantly affects the carbon dioxide concentration during subsequent collection or reuse. Considering the above problems, this embodiment uses a vacuum pump to create a vacuum and an infrared heating module 70 to heat the carbon dioxide adsorption module 50, which is under vacuum inside the reaction chamber 10, thereby improving the purity of the carbon dioxide gas desorbed by the carbon dioxide adsorption module 50.

[0086] It should be noted that the vacuum state in the embodiments of this application can refer to a vacuum-like state, such as the state in which the air pressure inside the reaction chamber 10 is lower than atmospheric pressure.

[0087] It should be noted that in this embodiment, vacuum technology is used to remove the remaining air inside the reaction chamber 10, and the vacuum degree inside the reaction chamber 10 can reach up to 98%, which is much higher than the vacuum degree required by the adsorbent during carbon dioxide desorption (e.g., 82% to 86%). Therefore, this embodiment improves the purity of carbon dioxide capture. During the carbon dioxide desorption stage, photothermal transfer is achieved through the infrared heating module 70 (e.g., an infrared heating generator), realizing temperature variation of the carbon dioxide adsorption module 50 in a near-vacuum environment.

[0088] In some embodiments, it should be noted that the vacuum pump can be connected to the reaction chamber 10 through a vacuum pump interface different from the opening. A suitable vacuum pump interface can be set according to the requirements, and this application embodiment does not limit this.

[0089] In some embodiments, the carbon dioxide removal device further includes:

[0090] Gas collection equipment, which is connected to a vacuum pump;

[0091] The vacuum pump is also used to collect the carbon dioxide gas desorbed from the carbon dioxide adsorption module 50 into a gas collection device.

[0092] The advantage of this embodiment is that the carbon dioxide gas desorbed by the carbon dioxide adsorption module 50 is collected and stored in the gas collection device, thereby achieving the separation of carbon dioxide gas from air and achieving the purpose of removing carbon dioxide.

[0093] Specifically, the gas collection device can be a gas collection bottle or a gas collection bag.

[0094] In some embodiments, the carbon dioxide removal device may further include a gas compressor. The gas compressor is connected to a vacuum pump and a gas collection device, and is used to compress the carbon dioxide gas desorbed from the carbon dioxide adsorption module 50 to collect the compressed carbon dioxide gas into the gas collection device.

[0095] In some embodiments, the carbon dioxide removal device further includes: an inlet carbon dioxide concentration meter, an outlet carbon dioxide concentration meter, a flow meter, a barometer, and a temperature sensor; the infrared heating module 70 includes a thermostat.

[0096] An inlet carbon dioxide concentration meter, an outlet carbon dioxide concentration meter, a flow meter, a barometer, and a temperature sensor are all installed inside the reaction chamber 10. The inlet carbon dioxide concentration meter is used to detect the carbon dioxide concentration at the air inlet; the outlet carbon dioxide concentration meter is used to detect the carbon dioxide concentration at the air outlet; the flow meter is used to detect the gas flow rate inside the reaction chamber 10; the barometer is used to detect the gas pressure inside the reaction chamber 10; and the temperature sensor is used to detect the temperature inside the reaction chamber 10.

[0097] The thermostat is used to control the infrared heating module 70 to heat the carbon dioxide adsorption module 50 with infrared rays at a preset temperature, so as to maintain the temperature of the carbon dioxide adsorption module 50 at the preset temperature.

[0098] The advantage of this embodiment is that it uses various sensors, including an inlet carbon dioxide concentration meter, an outlet carbon dioxide concentration meter, a flow meter, a barometer, and a temperature sensor, to detect multiple state parameters inside the carbon dioxide removal device, thereby improving the real-time performance and efficiency of carbon dioxide removal.

[0099] In some embodiments, the inlet carbon dioxide concentration meter, the outlet carbon dioxide concentration meter, the flow meter, the barometer, and the temperature sensor are respectively connected to the controller in communication. The controller acquires the signals sent by the above sensors and controls the first electric valve 30 and other modules based on the signals, thereby controlling the state of the carbon dioxide removal device (such as adsorption or desorption) by transmitting signals, thus realizing the automated control of the carbon dioxide removal process.

[0100] In some embodiments, the carbon dioxide removal device further includes a steam heating module connected to the reaction chamber 10; the steam heating module is used to input steam into the interior of the reaction chamber 10 to heat the carbon dioxide adsorption module 50.

[0101] In some embodiments, it should be noted that current air carbon capture devices often heat the carbon dioxide adsorbent with water vapor, which involves water resource utilization, leading to water waste and limiting its application scenarios. To address this, this application embodiment uses an infrared heating module 70 for heating, avoiding the aforementioned problems, reducing water consumption, optimizing heat transfer, and minimizing environmental impact, thus meeting the requirements of sustainable development. In another embodiment, current air carbon capture devices primarily use steel structures for their outer casing, which limits their application range and temperature control methods. In this application embodiment, the carbon dioxide removal device can use tempered glass for its outer casing to achieve photothermal transfer during infrared heating, overcoming the temperature control challenges under vacuum conditions and helping to improve the adsorption efficiency and performance of the carbon dioxide adsorption module 50.

[0102] It should be noted that the heating method of the carbon dioxide removal device includes at least one of infrared heating and steam heating. In some embodiments, infrared heating can be used alone, for example, by using infrared heating module 70 to heat carbon dioxide adsorption module 50. In another embodiment, steam heating can be used alone, for example, by using steam heating module to heat carbon dioxide adsorption module 50. In yet another embodiment, infrared heating and steam heating can be used together for carbon dioxide desorption. The advantages of steam heating include, but are not limited to: faster collection of carbon dioxide gas, specifically by dissolving carbon dioxide in steam to form carbonic acid, which can be quickly carried away by the steam. The advantages of infrared heating include, but are not limited to: overcoming the temperature variation problem under vacuum conditions, improving the purity of desorbed carbon dioxide gas, reducing water consumption, optimizing heat transfer, having less environmental impact, and meeting the requirements of sustainable development.

[0103] It should be noted that traditional carbon dioxide removal devices typically use dual valves, such as different valves to control the intake and exhaust of gas respectively. This application embodiment innovatively employs a single electric valve, which improves airtightness compared to traditional equipment; for example, the vacuum level inside the reaction chamber 10 can reach 96% to 98%. Furthermore, the use of a single electric valve in this application embodiment reduces energy consumption.

[0104] It should be noted that the carbon dioxide removal device in this embodiment is highly simple. Firstly, the adsorbent is easy to replace; with the cover 20 open, the carbon dioxide adsorption module 50 can be directly removed from the reaction chamber 10 to replace the adsorbent. Secondly, the intelligent control system is easy to operate. During operation, the state of the carbon dioxide removal device can be conveniently and quickly controlled via the intelligent control system. The intelligent control system offers diverse options and allows for individual adjustment of various state parameters of the carbon dioxide removal device. For example, the intelligent control system can individually control the opening or closing of the gas delivery device 40 (such as a fan) and control specific state parameters such as wind speed.

[0105] In some embodiments, the carbon dioxide removal device has a safety protection mechanism to deal with abnormal situations. This safety protection mechanism may specifically include an overheat protection mechanism and a pressure anomaly release mechanism. In one embodiment, the overheat protection mechanism is implemented by a thermostat in the infrared heating module 70; for example, when the temperature inside the reaction chamber 10 exceeds a preset temperature threshold, such as exceeding 100 degrees Celsius, the thermostat will automatically cool down to avoid overheating, thus improving the reliability and safety of the carbon dioxide removal device. In another embodiment, the pressure anomaly release mechanism refers to the provision of a gas pipeline connected to the reaction chamber 10. To prevent the chamber cover 20 from being difficult to open due to excessively low internal pressure (e.g., a vacuum), gas can be supplied to the reaction chamber 10 through this gas pipeline to pressurize it before opening the cover 20, reducing the pressure difference between the inside and outside of the reaction chamber 10, thereby facilitating the opening of the cover 20. Specifically, the gas pipeline can also be connected to a gas delivery device to supply gas to the reaction chamber 10.

[0106] In some embodiments, the experimental conditions for the carbon dioxide removal device may include: an ambient temperature of 25°C, an ambient humidity of 50% (excluding water vapor desorption conditions), and a gas flow rate of 1.0 m / min. In the carbon dioxide adsorption module 50, the adsorbent is a solid amine-based adsorbent, and the honeycomb adsorption carrier medium is a cordierite cylindrical module. During adsorption testing, the carbon dioxide adsorption module 50 has dimensions of 10 mm x 10 mm x 10 mm; during overall system testing, the carbon dioxide adsorption module 50 is a cylinder with a diameter of 300 mm and a height of 150 mm.

[0107] In some embodiments, the operating conditions of the carbon dioxide removal device include: an initial carbon dioxide concentration of 450 ppm (parts per million), an outlet carbon dioxide concentration of 21.6 ppm, and an adsorption efficiency of 95.2%. Specifically, the above data can be the fitted average of 100 experimental data. It should be noted that after 40 consecutive adsorption-desorption cycles, the adsorption efficiency and desorption efficiency of the carbon dioxide removal device remain above 90%, showing good cycle stability and good adsorbent stability. In some embodiments, specifically, the energy consumption of the carbon dioxide removal device during the adsorption process is approximately 0.36 ± 0.02 GJ / tCO2 (gigajoules per ton of carbon dioxide), the energy consumption during the desorption process is approximately 4.12 ± 0.07 GJ / tCO2, and the total energy consumption is approximately 4.48 GJ / tCO2. In another embodiment, with an air carbon dioxide concentration of approximately 400 ppm and a relative humidity in the range of 30% to 80%, the adsorption capacity of the carbon dioxide removal device is greater than 1.6 mol / kg (mass molality).

[0108] In some embodiments, it should be noted that adsorption capacity is used to represent the total amount of carbon dioxide that can be absorbed per unit mass (e.g., kg) of adsorbent. Adsorption capacity decay fluctuation is used to represent the percentage reduction in adsorption capacity compared to before the cycle after a predetermined number of adsorption-desorption cycles. Specifically, the carbon dioxide removal device of this application embodiment exhibits an adsorption capacity decay fluctuation of less than or equal to 15% after 100 cycles at a relative humidity of 30% to 80%. For example, if the adsorption capacity decay fluctuation is 15%, the initial adsorption capacity is 1 ton, and the adsorption capacity after 100 cycles is 850 kg.

[0109] Specifically, the carbon dioxide removal device can capture approximately 2.3 kg of carbon dioxide per day.

[0110] Please see Figure 5 In one application example, the carbon dioxide removal device removes carbon dioxide as follows:

[0111] (1) The adsorption process at room temperature specifically includes:

[0112] The first electric valve is controlled to open the hatch, and the blower is positioned in the opening. The blower then blows air into the opening to form an air inlet, allowing air to enter the reaction chamber and exit through the outlet, enabling the carbon dioxide adsorption module to adsorb carbon dioxide from the air. During this process, carbon dioxide in the air flows into the reaction chamber with the airflow and is adsorbed by the carbon dioxide adsorption module. The temperature inside the reaction chamber is maintained at room temperature during this adsorption process. The carbon dioxide concentration at the outlet is measured using a carbon dioxide concentration meter. When the carbon dioxide concentration at the outlet falls within a preset atmospheric carbon dioxide concentration threshold range, the outlet carbon dioxide concentration meter sends a signal to the controller. The controller then stops the blower and removes it from the opening, and finally controls the first electric valve to close the hatch, ensuring an airtight environment inside the reaction chamber.

[0113] (2) The vacuuming process specifically includes:

[0114] The vacuum pump is controlled to evacuate the reaction chamber, creating a vacuum environment. A pressure gauge is used to monitor the internal pressure of the reaction chamber. When the internal pressure is less than or equal to a preset vacuum pressure threshold, the pressure gauge sends a signal to the controller, which then shuts off the vacuum pump.

[0115] (3) Temperature-dependent desorption process (also known as low-temperature desorption process), specifically including:

[0116] The infrared heating module heats the vacuum reaction chamber to maintain a preset temperature threshold, allowing the carbon dioxide adsorption module to desorb carbon dioxide gas. The vacuum pump collects the carbon dioxide gas, directing it into a gas collection bag or bottle connected to the pump. The carbon dioxide concentration inside the reaction chamber is measured; when the concentration is less than or equal to a preset target threshold, the vacuum pump is shut off. Specifically, during the temperature-dependent desorption process, the carbon dioxide concentration rises from approximately 0 and then falls back to approximately 0, indicating completion of the desorption process and carbon dioxide collection. A large-range carbon dioxide concentration meter, located at the interface between the vacuum pump and the reaction unit, can be used to measure the concentration. The meter transmits a signal to the controller, which stops the infrared heating module from maintaining a constant temperature inside the chamber and opens the first electric valve to allow for the next carbon dioxide removal cycle.

[0117] It should be noted that the above-described carbon dioxide removal process is an alternating cyclical process. This application example implements the switching between three processes: room temperature adsorption, vacuuming, and temperature-switching desorption.

[0118] Please see Figure 6 This application also provides a carbon dioxide removal control system, which includes: the aforementioned carbon dioxide removal device and a controller; the controller is communicatively connected to the carbon dioxide removal device; the controller is used to control the opening or closing of the hatch cover via a first electric valve.

[0119] The specific implementation of this carbon dioxide removal control system is basically the same as the specific embodiments of the carbon dioxide removal device and the carbon dioxide removal control method described above, and will not be repeated here.

[0120] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0121] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0122] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0123] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0124] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0125] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0126] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. The coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, or indirect coupling or communication connection between the apparatus or units, and may be electrical, mechanical, or other forms.

[0127] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0128] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0129] If the integrated unit is implemented as 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 this application, in essence, 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. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0130] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A carbon dioxide removal device, characterized in that, The device includes: The reaction chamber has an opening; A hatch, movably connected to the reaction chamber, is used to cover the opening; A first electric valve is connected to the hatch cover and is used to control the hatch cover to open or close. A gas delivery device, which is movably connected to the reaction chamber; A carbon dioxide adsorption module is disposed inside the reaction chamber; When the hatch is open, the gas delivery device is suspended in the opening and blows air into the opening to form an air inlet. The gap between the edge of the gas delivery device and the edge of the opening forms an air outlet, allowing air to flow from the air inlet through the carbon dioxide adsorption module and be discharged from the air outlet. When the hatch is closed, the carbon dioxide adsorption module desorbs carbon dioxide gas.

2. The apparatus according to claim 1, characterized in that, The device is placed on a horizontal surface, and the opening is located at the top of the reaction chamber; The gas delivery device is further configured to blow air into the opening, so that the air flows in a first vertical direction at the air inlet and in a second vertical direction at the air outlet; wherein the first vertical direction is perpendicular to the horizontal plane and extends from away from the carbon dioxide adsorption module to near the carbon dioxide adsorption module; the second vertical direction is the opposite of the first vertical direction.

3. The apparatus according to claim 1, characterized in that, The gas delivery device includes a blower; The blower has a circular edge shape, and the opening has a circular edge shape; the air outlet is annular in shape, and the area ratio of the cross-section of the gas conveying device to the cross-section of the opening is greater than or equal to 50%.

4. The apparatus according to claim 3, characterized in that, The reaction chamber is cylindrical and includes a side wall with a cavity to accommodate the carbon dioxide adsorption module. The gas delivery device is movably connected to a first position of the side wall, and the cover is movably connected to a second position of the side wall. The first position and the second position are opposite to each other.

5. The apparatus according to claim 1, characterized in that, The device further includes: The second electric valve includes a cylinder, a first pull rod, and a second pull rod. The cylinder is connected to the first pull rod, and the first pull rod and the second pull rod are rotatably connected. The second pull rod is connected to the gas conveying device. The cylinder is used to control the second pull rod to rotate around the first pull rod, so that the gas delivery device is suspended in the opening.

6. The apparatus according to claim 5, characterized in that, The carbon dioxide adsorption module includes a carbon dioxide adsorbent, a honeycomb adsorption carrier medium, and a rectifier grid. The carbon dioxide adsorbent is disposed on the honeycomb adsorption carrier medium; the rectifier mesh is disposed at one end of the honeycomb adsorption carrier medium facing the opening. The carbon dioxide adsorbent is used to adsorb carbon dioxide gas in the air or desorb the carbon dioxide gas; the rectifier screen is used to prevent the carbon dioxide adsorbent from being carried out of the carbon dioxide adsorption module by the airflow.

7. The apparatus according to any one of claims 1 to 6, characterized in that, The device further includes: A vacuum pump is connected to the reaction chamber and is used to perform a vacuuming operation on the reaction chamber. An infrared heating module is disposed inside the reaction chamber. The infrared heating module is used to heat the carbon dioxide adsorption module with infrared rays under vacuum to desorb carbon dioxide gas.

8. The apparatus according to claim 7, characterized in that, The device further includes: A gas collection device, wherein the gas collection device is connected to the vacuum pump; The vacuum pump is also used to collect the carbon dioxide gas desorbed from the carbon dioxide adsorption module into the gas collection device.

9. The apparatus according to claim 7, characterized in that, The device also includes: an inlet carbon dioxide concentration meter, an outlet carbon dioxide concentration meter, a flow meter, a barometer, and a temperature sensor; the infrared heating module includes a thermostat. The inlet carbon dioxide concentration meter, the outlet carbon dioxide concentration meter, the flow meter, the barometer, and the temperature sensor are all located inside the reaction chamber. The inlet carbon dioxide concentration meter is used to detect the carbon dioxide concentration at the air inlet; the outlet carbon dioxide concentration meter is used to detect the carbon dioxide concentration at the air outlet; the flow meter is used to detect the gas flow rate inside the reaction chamber; the barometer is used to detect the gas pressure inside the reaction chamber; and the temperature sensor is used to detect the temperature inside the reaction chamber. The constant temperature controller is used to control the infrared heating module to heat the carbon dioxide adsorption module with infrared rays at a preset temperature, so as to maintain the temperature of the carbon dioxide adsorption module at the preset temperature.

10. A carbon dioxide removal control system, characterized in that, The system comprises: the carbon dioxide removal device according to any one of claims 1 to 9, and a controller; The controller is communicatively connected to the carbon dioxide removal device; the controller is used to control the opening or closing of the hatch via the first electric valve.

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