Air pressure assisted carbon dioxide adsorption and desorption device

Abstract

The utility model discloses an air pressure assisted carbon dioxide adsorption and desorption device, which belongs to the technical field of gas production devices, and comprises a closed tank body, a gas outlet pipe with a valve, a gas inlet pipe with a valve, a fan, a compressor, a heating mechanism, a material placing box, a carbon dioxide adsorption material, a gas collecting device and a connecting structure, the air outlet pipe and the air inlet pipe are arranged on the closed tank body, the fan is arranged in the air outlet pipe, the compressor is communicated with the interior of the closed tank body through the air conveying pipe, the heating mechanism is arranged in the closed tank body, the material placing box is arranged in the closed tank body, a box body of the material placing box is of a one-way ventilation structure, and the material placing box is filled with the carbon dioxide adsorption material. According to the carbon dioxide adsorption device, the adsorption efficiency and the desorption efficiency can be improved in an air pressure assisting mode, disturbance and abrasion of airflow to the carbon dioxide adsorption material can be reduced, and the carbon dioxide adsorption device has a wide application scene.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas production devices, and in particular relates to a gas pressure-assisted carbon dioxide adsorption and desorption device. Background Art

[0002] Existing carbon dioxide adsorption materials can adsorb carbon dioxide in the air and then discharge the adsorbed carbon dioxide in a specific environment, thereby realizing the collection and transfer of carbon dioxide.

[0003] However, existing carbon dioxide capture devices often rely on air flow to achieve contact between gas and adsorption material, which easily leads to disturbance and wear of the adsorption material. When the carbon dioxide adsorption material is a powdered material, it is difficult for it to work stably under airflow disturbance, resulting in low adsorption and desorption efficiency. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the utility model provides an air pressure-assisted carbon dioxide adsorption and desorption device to solve the problems that the existing carbon dioxide capture device easily causes disturbance and wear of the adsorption material, is difficult to work stably under airflow disturbance, and the material is difficult to uniformly cold adsorb or hot desorb, resulting in low adsorption and desorption efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A gas pressure-assisted carbon dioxide adsorption and desorption device, comprising:

[0007] Close the tank;

[0008] The air outlet pipe and the air inlet pipe are both arranged on the closed tank body, and the air outlet pipe and the air inlet pipe are both connected to the outside and the inside of the closed tank body. The air outlet pipe is provided with an air outlet valve, and the air inlet pipe is provided with an air inlet valve;

[0009] At least one fan; one fan is arranged in the air outlet pipe or the air inlet pipe;

[0010] The compressor is connected to the interior of the closed tank through an air pipe, and a pressure regulating valve is provided on the air pipe;

[0011] Heating mechanism; the heating mechanism is arranged in the closed tank body, and the heating mechanism is used to control the temperature inside the closed tank body;

[0012] At least one material placement box; the material placement box is arranged in a closed tank body, and the box body of the material placement box is a one-way air-permeable structure. When the gas pressure outside the material placement box is greater than the gas pressure inside the material placement box, the external gas passes through the box body of the material placement box and flows into the material placement box. When the gas pressure outside the material placement box is less than or equal to the gas pressure inside the material placement box, no gas passes through the box body of the material placement box.

[0013] Carbon dioxide adsorption material; the carbon dioxide adsorption material is filled in a material placement box, and when the carbon dioxide adsorption material is heated and pressurized, the carbon dioxide adsorption material adsorbs carbon dioxide in the air, and when the carbon dioxide adsorption material is not heated and pressurized, the carbon dioxide adsorption material releases the adsorbed carbon dioxide;

[0014] A gas collecting device capable of controlling the collection rate; the gas collecting device is provided with at least one collecting end, the collecting end of the gas collecting device passing through the closed tank body and disposed within the closed tank body;

[0015] At least one set of connecting structures; one set of connecting structures includes a plug and an openable and closable interface, the plugs are all set on the collection end of the gas collection device, and an openable and closable interface is set on a material placement box. When collecting carbon dioxide in the material placement box, the plug is connected to the interface, and the interior of the material placement box is connected to the collection end.

[0016] Preferably, the carbon dioxide adsorbent material is in powder form.

[0017] Preferably, the heating mechanism is one or more of a thermal radiation heating device, a microwave heating device and a semiconductor heating element.

[0018] Preferably, the gas collecting device comprises:

[0019] Negative pressure bottle;

[0020] A gas collecting pipe; a first end of the gas collecting pipe is connected to the negative pressure bottle, a second end of the gas collecting pipe passes through the closed tank body and is arranged in the closed tank body, the second end of the gas collecting pipe is provided with at least one branch pipe, and a plug is provided on one branch pipe;

[0021] Control valve: The control valve is installed on the gas collecting pipe.

[0022] Preferably, the box body of the material placement box is made of elastic material, and a plurality of one-way through holes are provided on the box body of the material placement box. The one-way through hole is a conical structure including a large diameter end and a small diameter end. The large diameter end is arranged on the outside of the box body of the material placement box, and the small diameter end is arranged on the inside of the box body of the material placement box. When the gas pressure outside the material placement box is less than or equal to the gas pressure inside the material placement box, the small diameter end of the one-way through hole shrinks and closes under the action of elasticity. When the gas pressure outside the material placement box is greater than the gas pressure inside the material placement box, the external gas passes through the large diameter end of the one-way through hole, squeezes open the small diameter end and flows into the material placement box.

[0023] Preferably, the carbon dioxide adsorption and desorption device also includes a rotating device, which is fixedly installed in the closed tank body. The rotating device is provided with a rotating shaft, the material placement box is connected to the rotating shaft of the rotating device, and the rotating device is used to drive the material placement box to rotate.

[0024] Preferably, the material placement box is a cylinder, and the top and bottom surfaces of the material placement box located on the central axis are respectively provided with an upper mounting hole and a lower mounting hole, and the rotating shaft of the rotating device passes through the upper mounting hole and the lower mounting hole and is fixedly connected to the material placement box.

[0025] Preferably, a set of connection structures includes:

[0026] The second connecting plate; the first side and the second side of the second connecting plate are both arcuate surfaces, and the arcuate surface of the second side of the second connecting plate matches the side surface of the material placement box;

[0027] Stopper; the stopper is arranged in the material placement box;

[0028] Connecting tube; a mounting through hole is provided on the side of the material placement box, and the connecting tube can be slidably arranged in the mounting through hole, and the first end of the connecting tube passes through the mounting through hole and then passes through the stopper, and the second end of the connecting tube passes through the second side and the first side of the second connecting plate in sequence;

[0029] baffle; one side of the baffle is rotatably disposed within the second end of the connecting pipe;

[0030] a first compression spring; the first compression spring is disposed in the second end of the connecting tube, the first end of the first compression spring is fixedly connected to the inner tube wall of the connecting tube, and the second end of the first compression spring is fixedly connected to the first surface of the baffle; when the first compression spring is in a stretched state, the first compression spring applies an elastic force to the first surface of the baffle, and the baffle closes the second end of the connecting tube; when the first compression spring is in a compressed state, the baffle releases the seal on the second end of the connecting tube;

[0031] A second compression spring; the second compression spring is sleeved on the connecting tube, a first end of the second compression spring is fixedly connected to the second side of the second connecting plate, and a second end of the second compression spring is fixedly connected to the outer side of the material placement box;

[0032] Connecting block; the top surface of the connecting block is an outwardly convex arc surface;

[0033] a first connecting plate; a first side of the first connecting plate being an arcuate surface that matches the first side of the second connecting plate, and a bottom surface of the connecting block being fixedly mounted on the first side of the first connecting plate;

[0034] Connecting through hole; the connecting through hole is set through the first connecting plate and the connecting block, the second end of the gas collecting pipe is made of hard material, the second end of the gas collecting pipe passes through the closed tank body and is fixed on the closed tank body, and a branch pipe of the gas collecting pipe is inserted into the connecting through hole at one end of the first connecting plate.

[0035] Preferably, the carbon dioxide adsorption and desorption device further includes a pressure sensor and a temperature sensor, and the pressure sensor and the temperature sensor are arranged on the closed tank body.

[0036] Preferably, the carbon dioxide adsorption and desorption device also includes a control module, which is connected to the outlet valve, the air inlet valve, the fan, the compressor, the pressure regulating valve, the heating mechanism, the gas collecting device, the rotating device, the pressure sensor and the temperature sensor. The control module is used to control the opening and closing of the outlet valve, the air inlet valve, the fan, the compressor, the pressure regulating valve, the heating mechanism, the gas collecting device and the rotating device.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] The present application can close the air outlet valve and the air inlet valve, and continuously introduce high-pressure gas into the closed tank body through the compressor to increase the air pressure in the closed tank body. At the same time, the heating mechanism can be turned on to heat the gas inside the tank body. At this time, the high-pressure gas enters the material placement box through the one-way air permeable structure of the material placement box, and the carbon dioxide adsorption material in the material placement box adsorbs carbon dioxide under high pressure and high temperature environment. When the pressure inside and outside the material placement box is balanced and the carbon dioxide adsorption is completed, the air inlet valve and the air outlet valve are opened to reduce the air pressure in the closed tank body, and the heating mechanism stops heating. The gas collection device with controllable collection rate is connected to the material placement box through the connecting structure, and slowly releases the air pressure in the material placement box to prevent the powdered carbon dioxide adsorption material from being disturbed by the airflow. When the air pressure drops and the temperature drops, the carbon dioxide adsorption material desorbs carbon dioxide and is collected by the gas collection device.

[0039] This application increases the adsorption efficiency and desorption efficiency of the carbon dioxide adsorption material through air pressure assistance, and the one-way air permeable structure of the material placement box of this application can reduce the disturbance and wear of the carbon dioxide adsorption material by the airflow during the pressurization and decompression process on the basis of improving the adsorption and desorption efficiency. This feature increases the application scope of this application and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the specific structure of this application;

[0041] Figure 2 A schematic diagram of the specific structure of the material placement box;

[0042] Figure 3 It is a structural schematic diagram of a one-way through hole;

[0043] Figure 4 It is a schematic diagram of the specific structure of the interface;

[0044] Figure 5 for Figure 4 A top view of

[0045] Figure 6 and Figure 7 Schematic diagram of the specific structure of the plug;

[0046] The following are marked in the figure:

[0047] 1-closed tank body; 2-pressure sensor; 3-temperature sensor; 4-material placement box; 5-pressure regulating valve; 6-gas pipe; 7-compressor; 8-rotating shaft; 9-stepping motor; 10-control valve; 11-negative pressure bottle; 12-gas collecting pipe; 13-heating mechanism; 14-air outlet pipe; 15-air inlet pipe; 16-second connecting plate; 17-connecting pipe; 19-second compression spring; 20-baffle; 21-first compression spring; 22-first connecting plate; 23-connecting block; 24-baffle; 25-connecting through hole. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] Example 1:

[0050] like Figure 1 As shown, a gas pressure-assisted carbon dioxide adsorption and desorption device comprises:

[0051] Close the tank 1;

[0052] The air outlet pipe 14 and the air inlet pipe 15 are both provided on the closed tank body 1, and the air outlet pipe 14 and the air inlet pipe 15 are both connected to the outside and the inside of the closed tank body 1. The air outlet pipe 14 is provided with an air outlet valve, and the air inlet pipe 15 is provided with an air inlet valve;

[0053] Fan; The fan is arranged in the outlet pipe 14;

[0054] Compressor 7; The compressor 7 is connected to the interior of the closed tank 1 through an air pipe 6, and a pressure regulating valve 5 is provided on the air pipe 6;

[0055] Heating mechanism 13; The heating mechanism 13 is provided in the closed tank body 1, and the heating mechanism 13 is used to control the temperature inside the closed tank body 1;

[0056] Four material placement boxes 4; such as Figure 3 As shown, the material placement box 4 is arranged in the closed tank body 1, and the box body of the material placement box 4 is a one-way air-permeable structure. When the gas pressure outside the material placement box 4 is greater than the gas pressure inside the material placement box 4, the external gas passes through the box body of the material placement box 4 and flows into the material placement box 4. When the gas pressure outside the material placement box 4 is less than or equal to the gas pressure inside the material placement box 4, no gas passes through the box body of the material placement box 4.

[0057] Carbon dioxide adsorption material; the carbon dioxide adsorption material is filled in the material placement box 4. When the carbon dioxide adsorption material is heated and pressurized, the carbon dioxide adsorption material adsorbs carbon dioxide in the air. When the carbon dioxide adsorption material is not heated and pressurized, the carbon dioxide adsorption material releases the adsorbed carbon dioxide;

[0058] A gas collecting device capable of controlling the collection rate; the collecting end of the gas collecting device passes through the closed tank body 1 and is arranged inside the closed tank body 1;

[0059] Four groups of connection structures; one group of connection structures includes a plug and an openable and closable interface. The plugs are all set on the collection end of the gas collection device, and an openable and closable interface is set on a material placement box 4. When collecting carbon dioxide in the material placement box 4, the plug is connected to the interface, and the inside of the material placement box 4 is connected to the collection end.

[0060] In this embodiment, the present application can close the outlet valve and the inlet valve, and continuously introduce high-pressure gas into the closed tank body 1 through the compressor 7 to increase the air pressure in the closed tank body 1. At the same time, the heating mechanism 13 can be turned on to heat the gas inside the tank body. At this time, the high-pressure gas enters the material placement box 4 through the one-way air permeable structure of the material placement box 4, and the carbon dioxide adsorption material in the material placement box 4 adsorbs carbon dioxide under a high-pressure and high-temperature environment. When the pressure inside and outside the material placement box 4 is balanced and the carbon dioxide adsorption is completed, the fan, the air inlet valve and the outlet valve are turned on to reduce the air pressure in the closed tank body 1, and the heating mechanism 13 stops heating. The gas collection device that can control the collection rate is connected to the material placement box 4 through the connecting structure, and slowly releases the air pressure in the material placement box 4 to avoid the powdered carbon dioxide adsorption material being disturbed by the airflow. When the air pressure drops and the temperature drops, the carbon dioxide adsorption material desorbs carbon dioxide and is collected by the gas collection device.

[0061] The present application increases the adsorption efficiency and desorption efficiency of the carbon dioxide adsorption material by means of air pressure assistance, and the one-way air permeable structure of the material placement box 4 of the present application can reduce the disturbance and wear of the carbon dioxide adsorption material by the airflow during the pressurization and decompression process on the basis of improving the adsorption and desorption efficiency. This feature increases the application scope of the present application and has broad application prospects.

[0062] Example 2:

[0063] The difference between this embodiment and embodiment 1 is that the carbon dioxide adsorbent material is in powder form.

[0064] In this embodiment, under the same volume, the area ratio of the powdered carbon dioxide adsorption material in contact with the air is greater than that of other forms of carbon dioxide adsorption materials. The carbon dioxide adsorption material used in this application is a DAC technology material, such as the carbon dioxide capture material for mosquito trapping equipment involved in patent No. ZL202410482343.X.

[0065] Example 3:

[0066] The difference between this embodiment and embodiment 1 is that the heating mechanism 13 is a semiconductor heating element, and the semiconductor heating element adopts a PTC ceramic piece, which is fixedly mounted on the inner wall of the closed tank body 1.

[0067] Example 4:

[0068] The difference between this embodiment and embodiment 1 is that Figure 1 As shown, the gas collection device includes:

[0069] Negative pressure bottle 11;

[0070] The gas collecting pipe 12; the first end of the gas collecting pipe 12 is connected to the negative pressure bottle 11, the second end of the gas collecting pipe 12 passes through the closed tank body 1 and is arranged in the closed tank body 1, the second end of the gas collecting pipe 12 is provided with four branches, and a plug is provided on each branch;

[0071] Control valve 10 ; The control valve 10 is provided on the gas collecting pipe 12 .

[0072] In this embodiment, the extraction rate of the gas in the material placement box 4 by the gas collecting pipe 12 can be controlled by controlling the opening and closing size of the valve 10 .

[0073] Example 5:

[0074] The difference between this embodiment and embodiment 1 is that Figure 3 As shown, the direction of the arrow is the flow direction of high-pressure gas. The box body of the material placement box 4 is made of elastic material. The box body of the material placement box 4 is provided with multiple one-way through holes. The one-way through hole is a truncated cone structure including a large diameter end and a small diameter end. The large diameter end is arranged on the outside of the box body of the material placement box 4, and the small diameter end is arranged on the inside of the box body of the material placement box 4. When the gas pressure outside the material placement box 4 is less than or equal to the gas pressure inside the material placement box 4, the small diameter end of the one-way through hole shrinks and closes under the action of elasticity. When the gas pressure outside the material placement box 4 is greater than the gas pressure inside the material placement box 4, the external gas passes through the large diameter end of the one-way through hole, squeezes open the small diameter end and flows into the material placement box 4.

[0075] Example 6:

[0076] The difference between this embodiment and embodiment 5 is that Figure 1 、 Figure 2 As shown, the carbon dioxide adsorption and desorption device also includes a rotating device, which is fixedly installed in the closed tank body 1. The rotating device is provided with a rotating shaft 8. The material placement box 4 is connected to the rotating shaft 8 of the rotating device. The rotating device is used to drive the material placement box 4 to rotate.

[0077] In this embodiment, the rotating device adopts a stepping motor 9. The stepping motor 9 drives the material placement box 4 to rotate so that the carbon dioxide adsorption material therein can be heated evenly, thereby improving the adsorption efficiency.

[0078] Example 7:

[0079] The difference between this embodiment and embodiment 6 is that Figure 1 、 Figure 2 As shown, the material placement box 4 is a cylinder, and the top and bottom surfaces of the material placement box 4 located on the central axis are respectively provided with an upper mounting hole and a lower mounting hole. The rotating shaft 8 of the stepper motor 9 passes through the upper mounting hole and the lower mounting hole and is fixedly connected to the material placement box 4.

[0080] Example 8:

[0081] The difference between this embodiment and embodiment 4 or 7 is that, Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown, a set of connection structures includes:

[0082] The second connecting plate 16; the first side and the second side of the second connecting plate 16 are both arcuate surfaces, and the arcuate surface of the second side of the second connecting plate 16 cooperates with the side surface of the material placement box 4;

[0083] Stopper 24; stopper 24 is provided in the material placement box 4;

[0084] A connecting tube 17 is provided on the side of the material placement box 4 with a mounting through hole, in which the connecting tube 17 is slidably disposed. The first end of the connecting tube 17 passes through the mounting through hole and then passes through the stopper 24. The second end of the connecting tube 17 passes through the second side and the first side of the second connecting plate 16 in sequence.

[0085] Baffle 20; one side of the baffle 20 is rotatably disposed within the second end of the connecting tube 17;

[0086] A first compression spring 21; the first compression spring 21 is disposed within the second end of the connecting tube 17, the first end of the first compression spring 21 being fixedly connected to the inner tube wall of the connecting tube 17, and the second end of the first compression spring 21 being fixedly connected to the first surface of the baffle 20. When the first compression spring 21 is in a stretched state, the first compression spring 21 applies an elastic force to the first surface of the baffle 20, and the baffle 20 closes the second end of the connecting tube 17. When the first compression spring 21 is in a compressed state, the baffle 20 releases the seal on the second end of the connecting tube 17;

[0087] The second compression spring 19 is mounted on the connecting tube 17, the first end of the second compression spring 19 is fixedly connected to the second side of the second connecting plate 16, and the second end of the second compression spring 19 is fixedly connected to the outer side of the material placement box 4;

[0088] Connecting block 23; the top surface of the connecting block 23 is an outwardly convex arc surface;

[0089] The first connecting plate 22; the first side of the first connecting plate 22 is a curved surface that matches the first side of the second connecting plate 16, and the bottom surface of the connecting block 23 is fixedly mounted on the first side of the first connecting plate 22;

[0090] The connecting through hole 25 is provided through the first connecting plate 22 and the connecting block 23. The second end of the gas collecting pipe 12 is made of a hard material. The second end of the gas collecting pipe 12 passes through the closed tank body 1 and is fixed to the closed tank body 1. One branch of the gas collecting pipe 12 is inserted into one end of the connecting through hole 25 located on the first connecting plate 22.

[0091] In this embodiment, when the material placement box 4 rotates following the rotating shaft 8, the arc surface of the connecting block 23 is pressed and contacted with the first side of the second connecting plate 16. Under the action of the second compression spring 19, the second connecting plate 16 is displaced a certain distance into the material placement box 4. When the connecting block 23 slides to the second end of the connecting tube 17 in accordance with the first side of the second connecting plate 16, the connecting block 23 squeezes the baffle 20 and is inserted into the second end of the connecting tube 17. At this time, the first compression spring 21 is compressed, and the baffle 20 releases the second end of the connecting tube 17. Closed, the second compression spring 19 rebounds, the air collecting pipe 12 is connected to the inside of the material placement box 4, and when the material placement box 4 continues to rotate, the arc surface of the connecting block 23 is squeezed and contacted with one side of the second end of the connecting tube 17, the second compression spring 19 is compressed, and the connecting block 23 slides out of the second end of the connecting tube 17. The connecting block 23 contacts the extrusion of the baffle 20, and the first compression spring 21 rebounds. The baffle 20 closes the second end of the connecting tube 17. When the connecting block 23 is out of the extrusion contact with the second connecting plate 16, the second compression spring 19 rebounds.

[0092] In the above process, when it is necessary to collect the gas in the material placement box 4, the control valve 10 is opened and the operation of the stepper motor 9 is stopped, so that the material placement box 4 and the negative pressure bottle 11 remain connected. When the time to collect the gas in the material placement box 4 has not yet arrived, the control valve 10 is closed and the stepper motor 9 remains in operation.

[0093] Example 9: The difference between this example and Example 1 is that Figure 1 As shown, the carbon dioxide adsorption and desorption device further includes a pressure sensor 2 and a temperature sensor 3 , and the pressure sensor and the temperature sensor 3 are arranged on the closed tank body 1 .

[0094] Example 10:

[0095] The difference between this embodiment and Example 9 is that the carbon dioxide adsorption and desorption device also includes a control module, which is connected to the outlet valve, the inlet valve, the fan, the compressor 7, the pressure regulating valve 5, the heating mechanism 13, the gas collecting device, the rotating device, the pressure sensor 2 and the temperature sensor 3. The control module is used to control the opening and closing of the outlet valve, the inlet valve, the fan, the compressor 7, the pressure regulating valve 5, the heating mechanism 13, the gas collecting device and the rotating device. The control module includes a microcontroller or processor, a memory, and an input / output interface.

[0096] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pressure-assisted carbon dioxide adsorption and desorption device, characterized in that: include: Close the tank (1); An air outlet pipe (14) and an air inlet pipe (15); the air outlet pipe (14) and the air inlet pipe (15) are both arranged on the closed tank body (1), the air outlet pipe (14) and the air inlet pipe (15) are both connected to the outside and the inside of the closed tank body (1), the air outlet pipe (14) is provided with an air outlet valve, and the air inlet pipe (15) is provided with an air inlet valve; At least one fan; one fan is arranged in the air outlet pipe (14) or in the air inlet pipe (15); Compressor (7); the compressor (7) is connected to the interior of the closed tank (1) through an air supply pipe (6), and a pressure regulating valve (5) is provided on the air supply pipe (6); Heating mechanism (13); the heating mechanism (13) is arranged in the closed tank body (1), and the heating mechanism (13) is used to control the temperature inside the closed tank body (1); At least one material placement box (4); the material placement box (4) is arranged in the closed tank body (1); the box body of the material placement box (4) is a one-way air-permeable structure; when the gas pressure outside the material placement box (4) is greater than the gas pressure inside the material placement box (4), the external gas passes through the box body of the material placement box (4) and flows into the material placement box (4); when the gas pressure outside the material placement box (4) is less than or equal to the gas pressure inside the material placement box (4), no gas passes through the box body of the material placement box (4); Carbon dioxide adsorption material; the carbon dioxide adsorption material is filled in the material placement box (4); when the carbon dioxide adsorption material is heated and pressurized, the carbon dioxide adsorption material adsorbs carbon dioxide in the air; when the carbon dioxide adsorption material is not heated and pressurized, the carbon dioxide adsorption material releases the adsorbed carbon dioxide; A gas collecting device capable of controlling the collection rate; the collecting end of the gas collecting device passes through the closed tank body (1) and is arranged inside the closed tank body (1); At least one set of connection structures; one set of connection structures includes a plug and an openable and closable interface, the plugs are arranged on the collection end of the gas collection device, and an openable and closable interface is arranged on a material placement box (4). When collecting carbon dioxide in the material placement box (4), the plug is connected to the interface, and the interior of the material placement box (4) is communicated with the collection end.

2. The gas pressure-assisted carbon dioxide adsorption and desorption device according to claim 1, characterized in that: The carbon dioxide adsorbent is in powder form.

3. The gas pressure-assisted carbon dioxide adsorption and desorption device according to claim 1, characterized in that: The heating mechanism (13) is one or more of a thermal radiation heating device, a microwave heating device and a semiconductor heating element.

4. The gas pressure-assisted carbon dioxide adsorption and desorption device according to claim 1, characterized in that: The gas collection device includes: Negative pressure bottle (11); An air collecting pipe (12); a first end of the air collecting pipe (12) is in communication with the negative pressure bottle (11); a second end of the air collecting pipe (12) passes through the closed tank body (1) and is disposed in the closed tank body (1); the second end of the air collecting pipe (12) is provided with at least one branch pipe, and a plug is provided on each branch pipe; Control valve (10); the control valve (10) is arranged on the gas collecting pipe (12).

5. The gas pressure-assisted carbon dioxide adsorption and desorption device according to claim 1, characterized in that: The box body of the material placement box (4) is made of elastic material. A plurality of one-way through holes are provided on the box body of the material placement box (4). The one-way through hole is a truncated cone structure including a large diameter end and a small diameter end. The large diameter end is arranged on the outside of the box body of the material placement box (4), and the small diameter end is arranged on the inside of the box body of the material placement box (4). When the gas pressure outside the material placement box (4) is less than or equal to the gas pressure inside the material placement box (4), the small diameter end of the one-way through hole shrinks and closes under the action of elasticity. When the gas pressure outside the material placement box (4) is greater than the gas pressure inside the material placement box (4), the external gas passes through the large diameter end of the one-way through hole, squeezes the small diameter end and flows into the material placement box (4).

6. The pressure-assisted carbon dioxide adsorption and desorption device according to claim 5, characterized in that: The carbon dioxide adsorption and desorption device further comprises a rotating device, which is fixedly mounted in the closed tank body (1). The rotating device is provided with a rotating shaft (8), and the material placement box (4) is connected to the rotating shaft (8) of the rotating device. The rotating device is used to drive the material placement box (4) to rotate.

7. The pressure-assisted carbon dioxide adsorption and desorption device according to claim 6, characterized in that: The material placement box (4) is a cylinder. The top surface and bottom surface of the material placement box (4) located at the central axis are respectively provided with an upper mounting hole and a lower mounting hole. The rotating shaft (8) of the rotating device passes through the upper mounting hole and the lower mounting hole and is fixedly connected to the material placement box (4).

8. A pressure-assisted carbon dioxide adsorption and desorption device according to claim 4 or 7, characterized in that: A set of connection structures includes: A second connecting plate (16); the first side and the second side of the second connecting plate (16) are both arcuate surfaces, and the arcuate surface of the second side of the second connecting plate (16) matches the side surface of the material placement box (4); Stopper (24); the stopper (24) is arranged in the material placement box (4); A connecting tube (17); a mounting through hole is provided on the side of the material placement box (4); the connecting tube (17) is slidably arranged in the mounting through hole; a first end of the connecting tube (17) passes through the mounting through hole and then passes through the stopper (24); a second end of the connecting tube (17) passes through the second side and the first side of the second connecting plate (16) in sequence; a baffle (20); one side of the baffle (20) is rotatably disposed within the second end of the connecting pipe (17); a first compression spring (21); the first compression spring (21) is arranged in the second end of the connecting tube (17); the first end of the first compression spring (21) is fixedly connected to the inner tube wall of the connecting tube (17); the second end of the first compression spring (21) is fixedly connected to the first surface of the baffle (20); when the first compression spring (21) is in a stretched state, the first compression spring (21) applies elastic force to the first surface of the baffle (20), and the baffle (20) closes the second end of the connecting tube (17); when the first compression spring (21) is in a compressed state, the baffle (20) releases the seal on the second end of the connecting tube (17); A second compression spring (19); the second compression spring (19) is sleeved on the connecting tube (17), a first end of the second compression spring (19) is fixedly connected to the second side of the second connecting plate (16), and a second end of the second compression spring (19) is fixedly connected to the outer side of the material placement box (4); Connecting block (23); the top surface of the connecting block (23) is an outwardly convex arc surface; A first connecting plate (22); the first side of the first connecting plate (22) is an arcuate surface that matches the first side of the second connecting plate (16); the bottom surface of the connecting block (23) is fixedly mounted on the first side of the first connecting plate (22); A connecting through hole (25); the connecting through hole (25) is provided through the first connecting plate (22) and the connecting block (23); the second end of the gas collecting pipe (12) is made of a hard material; the second end of the gas collecting pipe (12) passes through the closed tank body (1) and is fixed to the closed tank body (1); a branch pipe of the gas collecting pipe (12) is inserted into one end of the connecting through hole (25) located on the first connecting plate (22).

9. The pressure-assisted carbon dioxide adsorption and desorption device according to claim 1, characterized in that: The carbon dioxide adsorption and desorption device further comprises a pressure sensor (2) and a temperature sensor (3), and the pressure sensor and the temperature sensor (3) are arranged on the closed tank body (1).

10. The gas pressure-assisted carbon dioxide adsorption and desorption device according to claim 9, characterized in that: The carbon dioxide adsorption and desorption device further comprises a control module, which is connected to the outlet valve, the inlet valve, the fan, the compressor (7), the pressure regulating valve (5), the heating mechanism (13), the gas collecting device, the rotating device, the pressure sensor (2) and the temperature sensor (3), and is used to control the opening and closing of the outlet valve, the inlet valve, the fan, the compressor (7), the pressure regulating valve (5), the heating mechanism (13), the gas collecting device and the rotating device.

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