Trapping device based on MOF (Metal Organic Framework)

Abstract

The utility model provides an MOF (Metal Organic Framework)-based trapping device, which comprises a trapping unit, an MOF material for trapping water and carbon dioxide is arranged in the trapping unit, and the trapping unit is provided with a gas inlet, a water outlet and a carbon outlet; the air supply mechanism is connected with the air inlet and used for conveying air to the trapping unit; the temperature control mechanism is used for controlling the temperature of the trapping unit and controlling the trapping unit to carry out trapping or regeneration; the water storage mechanism is connected with the water outlet; and the carbon storage mechanism is connected with the carbon discharge port. In the application, the trapping unit can simultaneously complete trapping of water and carbon dioxide through the MOF material, and the trapping device does not need to be respectively provided with trapping mechanisms for trapping water and carbon dioxide, so that the structure of the trapping device is simplified, and the equipment cost of the trapping device is reduced. The temperature control mechanism can desorb carbon dioxide and water by controlling the temperature of the trapping unit, and the carbon dioxide and the water are stored in the water storage mechanism and the carbon storage mechanism, so that the recovery of the carbon dioxide and the water and the repeated use of the trapping unit are realized.

Description

Technical Field

[0001] Embodiments of this disclosure relate to the field of carbon capture technology, and more specifically, to a MOF-based capture device. Background Technology

[0002] With the advancement of industrialization, large amounts of greenhouse gases such as CO2 are emitted into the atmosphere, leading to global warming. The Paris Agreement pledged to limit the increase in global average temperature to well below 1.5°C. Natural carbon sinks (such as afforestation) and traditional emission reduction strategies alone cannot meet this goal. Countries need to adopt large-scale measures such as Carbon Capture and Storage (CCS) and Direct Air Capture (DAC). DAC, as an artificial carbon removal solution, can directly remove CO2 from the atmosphere, becoming an important means of supplementing natural carbon sinks.

[0003] Existing direct air capture (DAC) devices can only capture water from the air and cannot simultaneously capture both water and CO2. While some processes can capture both water and CO2, they often require more equipment, resulting in complex systems and higher costs.

[0004] Therefore, how to provide a simple capture device that can simultaneously capture water and CO2 from the air is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To overcome the above-mentioned defects, embodiments of this disclosure provide a MOF-based collection device, in which the collection unit can simultaneously collect water and CO2, thus simplifying the structure of the collection device.

[0006] According to one aspect, at least one embodiment of this disclosure provides a MOF-based trapping device, comprising:

[0007] The capture unit contains MOF material for capturing water and carbon dioxide. The capture unit has an air inlet, a drain outlet, and a carbon discharge outlet.

[0008] An air supply mechanism, connected to the air inlet, is used to supply air to the collection unit;

[0009] The temperature control mechanism is used to control the temperature of the collection unit and to control the collection unit to perform collection or regeneration.

[0010] A water storage mechanism, connected to the drain outlet, is used to store the water captured by the capture unit;

[0011] The carbon storage mechanism, connected to the carbon discharge port, is used to store the carbon dioxide captured by the capture unit.

[0012] In some embodiments, the number of the trapping units is two or more;

[0013] The collection device further includes an inlet air valve and an outlet air valve connected to the air inlet and air outlet of the collection unit, respectively. The inlet air valve and the outlet air valve are configured to open when the collection unit to which they belong is performing collection, and to close when the collection unit to which they belong is performing regeneration.

[0014] In some embodiments, the temperature control mechanism is an air heat pump system, which includes a first heat exchange tube, a second heat exchange tube, and a bidirectional expansion valve. The first heat exchange tube and the second heat exchange tube are located in different collection units. One of the first heat exchange tube and the second heat exchange tube is used for refrigerant heat dissipation, and the other is used for refrigerant heating.

[0015] In some embodiments, the trapping units are arranged side by side, and the air inlets of the trapping units face the same direction.

[0016] In some embodiments, the air supply mechanism includes an axial fan, which is connected to the air inlet of the collection unit via an inlet duct.

[0017] In some embodiments, an inlet filter is also included, which is disposed on the inlet side of the axial fan.

[0018] In some embodiments, a unit support frame is further included, with the collection unit disposed on top of the unit support frame and the water storage mechanism disposed below the unit support frame.

[0019] In some embodiments, the water storage mechanism can be pulled out from one side of the unit support frame, and the bottom of the water storage mechanism is provided with rollers.

[0020] In some embodiments, it also includes:

[0021] The collection unit, the air supply mechanism, the temperature control mechanism, the water storage mechanism, and the carbon storage mechanism are all housed within the housing.

[0022] In some embodiments, the housing includes a support frame and a panel, the panel being connected to the support frame for protecting the interior of the support frame, and the panel having a through hole extending along the thickness direction.

[0023] Existing direct air capture devices require separate water capture and carbon capture mechanisms to achieve the functions of water capture and carbon capture, resulting in a complex structure for direct air capture devices.

[0024] This application provides a MOF-based trapping device, comprising:

[0025] The capture unit contains MOF material for capturing water and carbon dioxide. The capture unit has an air inlet, a drain outlet, and a carbon discharge outlet.

[0026] An air supply mechanism, connected to the air inlet, is used to supply air to the collection unit;

[0027] The temperature control mechanism is used to control the temperature of the collection unit and to control the collection unit to perform collection or regeneration.

[0028] A water storage mechanism, connected to the drain outlet, is used to store the water captured by the capture unit;

[0029] The carbon storage mechanism, connected to the carbon discharge port, is used to store the carbon dioxide captured by the capture unit.

[0030] In this application, the capture unit, made of MOF material, can simultaneously capture water and carbon dioxide. The capture device does not require separate capture mechanisms for water and carbon dioxide, thus simplifying its structure and reducing equipment costs. The temperature control mechanism regenerates carbon dioxide and water by controlling the temperature of the capture unit, storing them in water and carbon storage mechanisms, thereby achieving water and carbon dioxide recovery and the reuse of the capture unit. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0032] Figure 1 An exploded view of a MOF-based trapping device provided in a specific embodiment of this application;

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the capture unit;

[0034] Figure 3 for Figure 1 Schematic diagram of a medium-carbon storage tank;

[0035] Figure 4 for Figure 1 Schematic diagram of the greywater storage tank;

[0036] Figure 5 for Figure 1 Schematic diagram of the middle unit support frame;

[0037] Figure 6 for Figure 1 A schematic diagram of the supporting frame structure;

[0038] Figure 7 for Figure 1 A schematic diagram of the structure of a medium-air heat pump system.

[0039] Figures 1 to 7 The attached figures are labeled as follows:

[0040] 1. Panel; 2. Inlet filter; 3. Axial fan; 4. Inlet duct; 5. Inlet valve; 51. First inlet valve; 52. Second inlet valve; 6. Collection unit; 61. First collection unit; 62. Second collection unit; 63. Housing; 7. Outlet valve; 71. First outlet valve; 72. Second outlet valve; 8. Outlet duct; 9. Outlet filter; 10. Air heat pump system; 101. First heat exchange tube; 102. Second heat exchange tube; 11. Water storage tank; 111. Transparent window; 112. Drain pipe; 12. Carbon storage tank; 121. Carbon discharge pipe; 122. Output pipe; 13. Unit support frame; 131. Rectangular frame; 132. Positioning groove; 133. Support leg; 14. Support frame; 141. Base plate; 142. Auxiliary wheels. Detailed Implementation

[0041] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0042] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0043] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0044] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0046] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] See Figure 1 As shown, this application provides a MOF (Metal-organic Framework) based capture device, including an air supply mechanism, a capture unit 6, a temperature control mechanism, a water storage mechanism, and a carbon storage mechanism. The capture unit 6 contains MOF material, which can simultaneously capture water and carbon dioxide at a suitable temperature. After a period of use, the MOF material reaches saturation. At other suitable temperatures, the MOF material can desorb the captured water and carbon dioxide, thus allowing the MOF material to be regenerated and reused. The temperature control mechanism controls the temperature of the capture unit 6, keeping it in either a capture or regeneration state. The air supply mechanism is connected to the capture unit 6 and supplies air into it. Water and carbon dioxide in the air are captured by the MOF material and then discharged from the capture unit 6. The water storage mechanism and carbon storage mechanism are also connected to the capture unit 6, allowing the desorbed water and carbon dioxide to be stored separately.

[0048] Optional, such as Figure 2 As shown, the collection unit 6 may include a housing 63, in which MOF material is filled. The housing 63 has an air inlet and an air outlet on its side, and a carbon discharge port and a water discharge port on its bottom surface. The height of the carbon discharge port may be higher than that of the water discharge port, or it may be located on the side of the housing 63; this is not limited here. The air inlet is connected to an air supply mechanism, the carbon discharge port is connected to a carbon storage mechanism, the water discharge port is connected to a water storage mechanism, and the air outlet is connected to the atmosphere. Figure 2 In the specific embodiment shown, the housing 63 of the collection unit 6 is rectangular, with the air inlet and outlet located on opposite sides of the housing 63, respectively on the front and rear sides. The carbon storage mechanism is located on the right side of the collection unit 6, and the carbon discharge port can be located on the right side of the housing 63. In this embodiment, the collection device can make full use of the space around the collection unit 6, making the structure of the collection device more compact and occupying less space. In other embodiments, the housing 63 can adopt other shapes, and the positions of the connection ports can be set according to the user's needs, which are not limited here.

[0049] Optional, such as Figure 1 As shown, the collection device also includes an inlet air valve 5 and an outlet air valve 7, which are connected to the air inlet and outlet of the collection unit 6, respectively, to control the air intake and exhaust of the collection unit 6. The collection unit 6 is connected to the water storage mechanism and the carbon storage mechanism via a drain pipe 112 and a carbon discharge pipe 121, respectively. A drain valve is installed in the drain pipe 112, and a carbon discharge valve is installed in the carbon discharge pipe 121. During collection, the inlet air valve 5 and the outlet air valve 7 are opened, while the drain valve and the carbon discharge valve are closed. The temperature control mechanism adjusts the temperature of the carbon collection unit to the collection temperature range. The air supply mechanism delivers air into the collection unit 6. After water and carbon dioxide are collected by the collection unit 6, the air is discharged into the atmosphere through the outlet. During regeneration, the inlet air valve 5 and the outlet air valve 7 are closed, while the drain valve and the carbon discharge valve are opened. The temperature control mechanism adjusts the temperature of the carbon collection unit to the regeneration temperature range. Water and carbon dioxide from the MOF material are released into the housing 63. The height of the water storage mechanism can be lower than that of the collection unit 6, allowing water to flow into the storage mechanism under gravity. After the carbon dioxide is released, the pressure inside the housing 63 increases, allowing the carbon dioxide to enter the carbon storage mechanism under pressure. Furthermore, a carbon storage pump can be installed in the carbon discharge pipe 121 to transport carbon dioxide from the housing 63 to the carbon storage mechanism. The collection unit 6 alternates between collection and desorption, enabling the collection device to collect water and carbon dioxide for an extended period.

[0050] Optional, see Figure 3 The carbon storage mechanism can be a carbon storage tank 12. An output pipe 122 can be installed on the top of the carbon storage tank 12, and the output pipe 122 is equipped with a discharge valve. A pressure sensor can be installed inside the carbon storage tank 12. When the pressure in the carbon storage tank 12 exceeds a preset value, the user can stop the collection device from operating. At this time, the air supply mechanism, inlet air valve 5, outlet air valve 7, and temperature control mechanism are all closed. The user connects the recovery device to the output pipe 122, and then the discharge valve opens, allowing carbon dioxide to enter the recovery device through the output pipe 122. In other embodiments, the carbon storage mechanism can be a solvent tank containing an absorbent solvent or other containers for storing carbon dioxide; this is not limited to these specific embodiments.

[0051] In some embodiments, the number of collection units 6 is two or more. When one collection unit 6 becomes saturated, it can be regenerated, and the remaining collection units 6 continue to collect. After regeneration, the collection units 6 can start collecting again. Therefore, the collection device can continuously collect. Figure 1 In the specific embodiment shown, there are two trapping units 6, namely a first trapping unit 61 and a second trapping unit 62. The first trapping unit 61 and the second trapping unit 62 can be regenerated alternately. Of course, the number of trapping units 6 is not limited to this.

[0052] Optionally, the air supply mechanism is connected to the air inlet of the collection unit 6 via the inlet duct 4. For example... Figure 1 As shown, two collection units 6 are arranged side by side, with their air inlets facing the same direction. There are also two air supply mechanisms, both located on the same side as the air inlets and connected to the two inlets respectively. The cross-sectional area of ​​the inlet duct 4 gradually decreases in the direction from the air supply mechanism to the air inlet. The inlet duct 4 serves as a guide and increases the airflow velocity. The inlet valves 5 include a first inlet valve 51 and a second inlet valve 52, respectively positioned between the air inlets of the first collection unit 61 and the second collection unit 62 and the inlet duct 4. The air outlets of the first collection unit 61 and the second collection unit 62 are respectively equipped with a first outlet valve 71 and a second outlet valve 72. Temperature sensors can be installed in the first collection unit 61 and the second collection unit 62 to detect their temperatures, and the collection device can control the temperature control mechanism based on these temperatures.

[0053] Optionally, the air supply mechanism includes an axial fan 3, in Figure 1 In the specific embodiment shown, each air supply mechanism includes four axial flow fans 3, which can be arranged in a rectangular pattern. During the collection process, the four axial flow fans 3 can operate simultaneously, which increases the airflow and ensures the normal operation of the collection device even if one axial flow fan 3 fails. Of course, other types of fans can also be used in the air supply device, and the number of fans is not limited to this.

[0054] Optionally, the collection device also includes an inlet filter 2, such as Figure 1 As shown, the inlet filter 2 is located on one side of the air supply mechanism inlet to block insects and other foreign objects from entering the collection unit 6, thereby preventing the MOF material in the collection unit 6 from becoming clogged and extending the service life of the MOF material.

[0055] In some embodiments, the collection device further includes a unit support frame 13 for supporting the collection unit 6. For example... Figure 5As shown, the unit support frame 13 may include a rectangular frame 131 and legs 133. The rectangular frame 131 may be horizontally arranged and has a positioning groove 132, within which the collection unit 6 may be disposed. There are four legs 133, distributed at the four corners of the rectangular frame 131. A water storage mechanism may be placed between the legs 133, positioned directly below the collection device, allowing the water collected by the collection device to flow into the water storage mechanism under gravity.

[0056] Optionally, the water storage mechanism can be a water storage tank 11, such as... Figure 4 As shown, the water storage tank 11 can be at least partially inserted between the legs 133 of the unit support frame 13, and the legs 133 can position the water storage tank 11. The upper surface of the water storage tank 11 is provided with a drain pipe 112, which has two interfaces for connecting to the drain ports of the two collection units 6 respectively. Optionally, the water storage tank 11 can be partially located outside the orthographic projection range of the unit support frame 13 on the horizontal plane. Specifically, this part can be located below the inlet filter 2, the air supply mechanism, and the inlet duct 4 to support the three. Of course, the water storage mechanism can also be a tank or other storage container, which is not limited here.

[0057] Optional, in Figure 1 In the illustrated embodiment, the carbon storage tank 12 and the temperature control mechanism are respectively located on both sides of the unit support frame 13. The collection unit 6 has an outlet duct 8 on the side furthest from the air supply mechanism. The outlet duct 8 is Y-shaped, with two branch pipes connected to the air outlets of the first collection unit 61 and the second collection unit 62, respectively, and connected to the exhaust main duct. The exhaust main duct discharges the purified air to the atmosphere. An outlet filter 9 can also be installed at the outlet of the exhaust main duct to prevent flying insects and other insects from entering the collection unit 6 through the outlet duct 8.

[0058] Optionally, the first collection unit 61, the second collection unit 62, the inlet filter 2, the air supply mechanism, the inlet duct 4, the first inlet valve 51, the second inlet valve 52, the first outlet valve 71, the second outlet valve 72, the outlet duct 8, and the outlet filter 9 can be installed at the same height to reduce airflow resistance. Of course, users can also set the height of the above components as needed, which is not limited here.

[0059] In this embodiment, the internal layout of the collection device is more compact, reducing space waste. Therefore, the volume of the collection unit 6, carbon storage tank 12 and water storage tank 11 can be increased, thereby improving the collection capacity of the collection device and extending the operating cycle of the collection device.

[0060] In some embodiments, the collection device further includes a housing, in which the air supply mechanism, collection unit 6, temperature control mechanism, water storage mechanism, and carbon storage mechanism can all be housed. The housing protects the various components of the collection device. Figure 1As shown, the box is a cube, and its size can be 1m×1m×1m. The cube box can facilitate the transportation and storage of the collection device. Of course, the box can also be other shapes, such as cylinder, prism or other arbitrary shapes, which are not limited here.

[0061] Optionally, the enclosure includes a support frame 14 and a panel 1. Figure 1 and Figure 6 In the illustrated embodiment, the support frame 14 is a cubic frame, and the panel 1 is mounted on the surface of the support frame 14 to protect the interior of the enclosure. The panel 1 has a through hole extending along the thickness direction, allowing air to enter the interior of the enclosure through the through hole. Figure 1 There are multiple through holes, which are distributed in a matrix on panel 1. Figure 1 In this enclosure, the top surface and four sides are all formed by panels 1, and all five surfaces allow air to enter and exit. Panels 1 can be made of metal or plastic, etc. Panels 1 can be connected to the support frame 14 by welding, bolting, or bonding. At least one panel 1 is detachably connected to the support frame 14. When the water storage tank 11 or the carbon storage tank 12 is full, the panel 1 can be opened to remove the water storage tank 11 or to release the carbon dioxide from the carbon storage tank 12.

[0062] Optionally, the enclosure also includes a base plate 141, and the unit support frame 13, water storage tank 11, air heat pump system 10 and carbon storage tank 12 are all installed on the base plate 141. Figure 1 The front panel 1 of the middle tank is detachably connected to the support frame 14. When the liquid level in the water storage tank 11 is higher than the preset level, the panel 1 can be removed, and the water storage tank 11 can be replaced. Figure 4 As shown, the water storage tank 11 has a transparent window 111 for observing the liquid level. The user can determine the liquid level in the water storage tank 11 through the transparent window 111. In other embodiments, the user can install a liquid level sensor in the water storage tank 11 to measure the liquid level; this is not limited here. For easy removal, the bottom of the water storage tank 11 is equipped with casters, allowing the operator to pull the water storage tank 11 horizontally for assembly and disassembly. Figure 6 As shown, the base plate 141 is provided with auxiliary wheels 142 near the front side, which can assist the water storage tank 11 in moving.

[0063] In some embodiments, the temperature control mechanism includes an air heat pump system 10. For example... Figure 7As shown, the air heat pump system 10 includes a compressor, a reversing valve, a bidirectional expansion valve, a flow meter, and heat exchange tubes. The heat exchange tubes are disposed within the housing 63 of the collection unit 6 and are used to control the temperature of the collection unit 6, thereby enabling the collection unit 6 to perform collection or regeneration. Specifically, the heat exchange tubes include a first heat exchange tube 101 and a second heat exchange tube 102, which are respectively disposed on the high-temperature side and the low-temperature side of the air heat pump system 10. When the first heat exchange tube 101 is used for heat absorption, the second heat exchange tube 102 is used for heat release; conversely, the other side can also be used. The first heat exchange tube 101 and the second heat exchange tube 102 are respectively disposed in the first collection unit 61 and the second collection unit 62. During operation, the air heat pump system 10 will extract heat from one collection unit 6 and release heat in the other collection unit 6. Users can adjust the pressure of the refrigerant after decompression through the two-way expansion valve, thereby adjusting the temperature difference between the refrigerant and the low-temperature side and controlling the heat exchange between the refrigerant and the low-temperature side. Similarly, users can adjust the heat exchange between the refrigerant and the high-temperature side through the compressor, so that the capture unit 6 on the low-temperature side and the high-temperature side are in a suitable temperature range.

[0064] Optionally, the air heat pump system 10 also includes a third heat exchange tube, which can be located on the low-temperature side and / or the high-temperature side. The third heat exchange tube can be situated outside the trapping unit 6 for heat exchange with the ambient air. The user can adjust the heat exchange efficiency of the third heat exchange tube by changing the airflow velocity around it. This method, combined with the compressor and bidirectional expansion valve described above, allows for more precise adjustment of the temperature of the trapping unit 6.

[0065] The collection device provided in this application can be installed in various scenarios, such as deserts, which are characterized by large temperature differences between day and night, high daytime temperatures, and low nighttime temperatures. At night, the ambient temperature in the desert may be lower than the collection temperature of the collection unit 6, while at midday, under direct sunlight, the ambient temperature may be higher than the desorption temperature of the collection unit 6.

[0066] Optionally, the temperature control mechanism also includes a heater, which heats the collection unit 6 when the ambient temperature is lower than its collection temperature, ensuring the normal operation of the collection unit 6. The heater can be an electric heating wire, a heating lamp, etc. Users can allocate the load between the heater and the air heat pump system 10 according to actual conditions.

[0067] Optionally, the temperature control mechanism also includes a shielding component, which can be installed on the outside of the enclosure to block direct sunlight from reaching the collection device. In the desert, the temperature in the shade is 11°C to 17°C lower than the ambient temperature. The shielding component prevents the temperature inside the enclosure from exceeding 50°C, thus ensuring the normal operation of the collection unit 6. The shielding component can be a reflector or a photovoltaic panel, etc. The photovoltaic panel can generate electricity that can also drive the air supply mechanism, the air heat pump system 10, and the heater.

[0068] The air heat pump system 10 can simultaneously perform heating and cooling operations, effectively utilizing energy and reducing the energy consumption of the capture device.

[0069] In one specific embodiment of this application, the collection unit 6 is in a collection state within a temperature range of 20℃ to 25℃; and in a regeneration state within a temperature range of 65℃ to 75℃. Of course, the collection temperature and regeneration temperature can be determined based on the MOF material, and are not limited here.

[0070] This application also provides embodiments of the capture device in several application scenarios.

[0071] Example 1

[0072] The ambient temperature is 25℃~30℃, which is higher than the collection temperature but lower than the regeneration temperature. Therefore, one collection unit 6 needs to be heated while the other collection unit 6 needs to be cooled. For example, the first collection unit 61 performs collection, and the second collection unit 62 performs regeneration. During the refrigerant flow, it passes sequentially through the bidirectional expansion valve, the first heat exchange tube 101, the compressor, and the second heat exchange tube 102. The refrigerant temperature is lower in the first heat exchange tube 101, so the first collection unit 61 can be cooled to maintain it within the temperature range of 20℃~25℃. The refrigerant temperature is higher in the second heat exchange tube 102, so the second collection unit 62 can be heated to maintain it within the temperature range of 65℃~75℃. After the first trapping unit 61 is saturated, the inlet air valve 5 and outlet air valve 7 of the first trapping unit 61 are closed, and the inlet air valve 5 and outlet air valve 7 of the second trapping unit 62 are opened. The compressor rotates in reverse, changing the flow direction of the refrigerant, so that the air heat pump system 10 heats the first trapping unit 61 and cools the second trapping unit 62. If the heat obtained by the air heat pump system 10 from the first trapping unit 61 is insufficient to heat the second trapping unit 62 to the desorption temperature, the corresponding heater can be activated to heat the second trapping unit 62.

[0073] Example 2

[0074] The ambient temperature is 30℃~75℃, which is higher than the capture temperature but lower than or equal to the regeneration temperature. Therefore, at least one capture unit 6 needs to be cooled. For example, the first capture unit 61 performs capture, and the second capture unit 62 performs regeneration. A shielding element can shield the housing, reducing its temperature. The air heat pump system 10 can cool the first capture unit 61 and heat the second capture unit 62. If the temperature of the second capture unit 62 is too low after adjustment by the air heat pump system 10, the corresponding heater can be activated to heat the second capture unit 62. If the temperature of the first capture unit 61 is too high after adjustment by the air heat pump system 10, the airflow velocity around the third heat exchange tube of the corresponding second capture unit 62 can be increased to reduce the heat absorbed by the refrigerant during circulation. After the first collection unit 61 is saturated, the inlet air valve 5 and outlet air valve 7 of the first collection unit 61 are closed, and the inlet air valve 5 and outlet air valve 7 of the second collection unit 62 are opened. The compressor rotates in reverse to change the flow direction of the refrigerant, so that the air heat pump system 10 heats the first collection unit 61 and cools the second collection unit 62.

[0075] Example 3

[0076] The ambient temperature is 15℃~20℃, which is lower than the collection temperature. Therefore, it is necessary to raise the temperature of the two collection units 6. At this time, the heater is activated to heat the two collection units 6. Specifically, the heater can heat the two collection units 6 to a temperature range of 20℃~25℃ and a temperature range of 65℃~75℃, respectively. When the collection units 6 need to switch functions, i.e., switch between collection and regeneration states, the air heat pump system 10 can be activated to adjust the temperature of the two collection units 6. Of course, in this embodiment, the temperature control method of the collection units 6 is not limited to this. For example, the user can also use the heater to heat the two collection units 6 to the same temperature and then use the air heat pump system 10 to adjust the two collection units 6 to the collection and regeneration temperatures, respectively.

[0077] Example 4

[0078] The ambient temperature is 75℃, which is higher than both the collection temperature and the regeneration temperature. Therefore, it is necessary to cool down the two collection units 6. A shielding device can be used to block the housing, keeping the housing temperature below 65℃. The air heat pump system 10 can be started to adjust the temperature of the two collection units 6. The adjustment method can be referred to the case of the first collection unit 61 being too hot in Embodiment 2, and will not be repeated here.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A MOF-based trapping device, characterized in that, include: The collection unit (6) is provided with MOF material for collecting water and carbon dioxide. The collection unit (6) has an air inlet, a drain outlet and a carbon discharge outlet. An air supply mechanism, connected to the air inlet, is used to supply air to the collection unit (6); A temperature control mechanism is used to control the temperature of the collection unit (6) and to control the collection unit (6) to perform collection or regeneration. A water storage mechanism, connected to the drain outlet, is used to store the water captured by the collection unit (6); A carbon storage mechanism, connected to the carbon discharge port, is used to store the carbon dioxide captured by the capture unit (6).

2. The trap device of claim 1, wherein The number of the trapping units (6) is two or more; The collection device also includes an inlet air valve (5) and an outlet air valve (7) connected to the air inlet and air outlet of the collection unit (6) respectively. The inlet air valve (5) and the outlet air valve (7) are configured to open when the collection unit (6) to which they belong is collecting, and to close when the collection unit (6) to which they belong is regenerating.

3. The trap of claim 1, wherein The temperature control mechanism is an air heat pump system (10), which includes a first heat exchange tube (101), a second heat exchange tube (102), and a bidirectional expansion valve. The first heat exchange tube (101) and the second heat exchange tube (102) are located in different collection units (6). One of the first heat exchange tube (101) and the second heat exchange tube (102) is used for refrigerant heat dissipation, and the other is used for refrigerant heating.

4. The trap of claim 2, wherein Each of the trapping units (6) is arranged side by side, and the air inlet of each of the trapping units (6) faces the same direction.

5. The trap of claim 1, wherein The air supply mechanism includes an axial fan (3), which is connected to the air inlet of the collection unit (6) via an inlet duct (4).

6. The trap of claim 1, wherein It also includes an inlet filter (2), which is disposed on the inlet side of the air supply mechanism.

7. The trap of claim 1, wherein It also includes a unit support frame (13), the collection unit (6) is disposed on the top of the unit support frame (13), and the water storage mechanism is disposed below the unit support frame (13).

8. The trap of claim 7, wherein, The water storage mechanism can be pulled out from one side of the unit support frame (13), and the bottom of the water storage mechanism is provided with rollers.

9. The trap device according to any one of claims 1 to 8, characterized in that Also includes: The collection unit (6), the air supply mechanism, the temperature control mechanism, the water storage mechanism, and the carbon storage mechanism are all located in the housing.

10. The trap of claim 9, wherein, The housing includes a support frame (14) and a panel (1). The panel (1) is connected to the support frame (14) and is used to protect the interior of the support frame (14). The panel (1) has a through hole that extends through the thickness direction.

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