Direct air carbon capture system

Abstract

The utility model discloses a direct air carbon capture system, which belongs to the technical field of direct air carbon capture, and comprises a solar concentrating photovoltaic device connected with a carbon capture device, and the carbon capture device is connected with a carbon purification and storage device; the system further comprises a concentrating photovoltaic intelligent temperature control system and an intelligent temperature control system. Solar energy is converted into electric energy and heat energy through the solar concentrating photovoltaic device, and the energy consumption of the system is reduced while cogeneration is achieved; the intelligent temperature control system automatically adjusts heat input according to the temperature change of the reaction tower, so that accurate temperature control is ensured, and the adsorbent performance and the carbon capture efficiency are improved; the concentrating photovoltaic temperature control system monitors the temperature of a photovoltaic cell in real time and transfers waste heat to the carbon capture device, so that the situation that the power generation efficiency of the photovoltaic cell is affected by too high temperature is avoided, and meanwhile energy consumption of a motor boiler is reduced. In the desorption process of the reaction tower, high-temperature steam is cooled in the condenser, and released heat is conveyed into the heat storage tank to be used in the subsequent adsorbent regeneration process.

Description

Technical Field

[0001] This utility model belongs to the field of direct air carbon capture technology, and specifically relates to a direct air carbon capture system. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Carbon dioxide capture, utilization, and storage (CCUS) technology, as a highly efficient emission reduction strategy, precisely captures carbon dioxide from stationary emission sources in fields such as thermal power generation, steel manufacturing, carbon production, and the chemical industry. This not only improves emission reduction efficiency but also reduces transportation costs. Traditional capture methods, such as pre-combustion, oxy-fuel combustion, and post-combustion capture, are each suitable for specific industrial applications.

[0004] Direct air capture (DAC) technology can directly extract carbon dioxide from the atmosphere and permanently convert it into other forms for storage. This is particularly effective for addressing dispersed emission sources such as numerous small fossil fuel combustion facilities and vehicles. The advantages of DAC technology lie in its ability to stably and substantially reduce atmospheric carbon dioxide concentrations, and its superior deployment flexibility compared to CCUS technology, effectively capturing carbon dioxide leaks that may occur during CCUS storage. In response to the rising trend of carbon dioxide emissions, the appropriate application of DAC technology suggests the possibility of achieving "negative emissions," providing a solid technical guarantee for significantly reducing atmospheric carbon dioxide levels.

[0005] Existing direct air capture systems typically rely on the heat or electricity generated from fossil fuel combustion as their driving energy source. This process not only consumes a significant amount of energy, including the energy required for adsorbent regeneration and carbon dioxide compression and storage, but also leads to additional carbon emissions, thereby reducing the net benefits of carbon capture. Furthermore, the temperature control of the reaction tower has a substantial impact on adsorbent performance and carbon capture efficiency. Traditional control methods struggle to achieve precise temperature control of the reaction tower, resulting in decreased adsorbent performance and reduced carbon capture efficiency.

[0006] Coupled with concentrated photovoltaic (CPV) technology, DAC technology is an effective way to reduce system energy consumption. However, it also brings heat dissipation problems. Increased temperature leads to decreased photovoltaic cell efficiency and can even damage the cells. Traditional heat dissipation methods are ineffective in solving the heat dissipation problem of CPV systems, limiting the widespread application of CPV technology. Utility Model Content

[0007] To address the aforementioned problems, this invention provides a direct air carbon capture system that utilizes a solar concentrating photovoltaic (PV) device to convert solar energy into electricity and heat, achieving combined heat and power (CHP) while reducing system energy consumption. It employs two intelligent temperature control systems: one automatically adjusts heat input based on changes in the reaction tower temperature to ensure precise temperature control, improving adsorbent performance and carbon capture efficiency; the other monitors the PV cell temperature in real time and transfers waste heat to the electric boiler via a first water supply pipeline, preventing excessive temperature from affecting the PV cell's power generation efficiency and reducing the electric boiler's energy consumption. During the desorption process in the reaction tower, high-temperature steam is cooled in a condenser, and the released heat is transferred to a heat storage tank for subsequent adsorbent regeneration.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A direct air carbon capture system includes a solar concentrating photovoltaic device, which includes a photovoltaic panel, a heat absorber connected to the back of the photovoltaic panel, the heat absorber using a heat pipe device, the evaporation section of which is directly connected to the back of the photovoltaic panel, and the condensation section connected to a first water supply pipeline.

[0010] One end of the first water supply pipeline is connected to the water tank via the first water pump, and the other end is connected to the carbon capture device.

[0011] The carbon capture device includes a reaction tower, which is connected to an electric boiler via an inlet pipe and to a carbon purification and storage device via a mixed gas exhaust pipe; the electric boiler is connected to the other end of the first water supply pipe.

[0012] A solar concentrating photovoltaic (PV) device and a carbon capture device are connected to a PV intelligent temperature control system. The PV intelligent temperature control system includes a first temperature sensor installed on the PV panel, the first temperature sensor is connected to a first controller, and the first controller is connected to a first water pump.

[0013] An intelligent temperature control system is installed between the carbon capture device and the carbon purification and storage device.

[0014] Preferably, the heat absorber is connected to the first water pump, the water tank, and the electric boiler via a first water supply pipeline, and a third shut-off valve is provided between the water pump and the water tank; the first water supply pipeline is a one-way pipeline.

[0015] Preferably, the reaction tower is equipped with an adsorbent and a circulating water network.

[0016] Preferably, the reaction tower is further connected to an air inlet pipe, a first air outlet pipe, a second air outlet pipe, and a second water supply pipe; a first fan is installed on the air inlet pipe, and a first inlet valve is installed between the first fan and the reaction tower; a second fan is installed on the air inlet pipe, and a second inlet valve is installed between the second fan and the reaction tower; a vacuum pump is installed on the second air outlet pipe, and a second exhaust valve is installed between the reaction tower and the vacuum pump; the reaction tower and the condenser are connected via a second water supply pipe.

[0017] Preferably, the carbon purification and storage device includes a condenser, the inlet end of which is connected to the reaction tower, the outlet end of which is connected to the inlet end of the compressor, and the outlet end of the compressor is connected to the inlet end of the carbon storage tank; the reaction tower, condenser, compressor and carbon storage tank are connected by a mixed gas exhaust pipeline.

[0018] Preferably, the mixed gas exhaust pipe between the condenser and the reaction tower is equipped with a third exhaust valve, the condenser and the compressor are equipped with a first shut-off valve, and the compressor and the carbon storage tank are equipped with a second shut-off valve.

[0019] Preferably, the intelligent temperature control system includes a second temperature sensor installed on the reaction tower, the second temperature sensor being connected to a second controller, the second controller being connected to a second water pump, and the second water pump being connected to a heat storage tank.

[0020] Preferably, the heat storage tank is located between the second water pump and the condenser. The reaction tower, the second water pump, the heat storage tank, and the condenser are connected by a second water supply pipeline, which is a bidirectional circulation pipeline. A fourth shut-off valve is installed between the condenser and the heat storage tank. The second water pump is connected to the circulating water network inside the reaction tower.

[0021] Preferably, a concentrator is installed in front of the photovoltaic panel, a converter is connected to the end of the photovoltaic panel, the converter is connected to an inverter, and the inverter is connected to a power transmission line.

[0022] Preferably, the power transmission line includes a first main cable and a second main cable. The first main cable connects and supplies power to a first water pump, a first fan, and a vacuum pump; the second main cable connects and supplies power to a first temperature sensor, a first controller, a motor boiler, a second fan, a second temperature sensor, a second controller, a second water pump, a condenser, and a compressor.

[0023] Compared with the prior art, the advantages and positive effects of this utility model are:

[0024] 1. This invention employs concentrated photovoltaic (CPV) technology to achieve efficient electrical energy conversion through the photovoltaic effect, and fully utilizes the waste heat generated during photovoltaic power generation using the photothermal conversion principle. This invention not only significantly improves overall energy utilization efficiency, but also effectively reduces energy consumption and carbon emissions by driving direct carbon capture (DAC) technology based on chemical absorption.

[0025] 2. This utility model is equipped with two intelligent temperature control subsystems: one is an intelligent temperature control system between the reaction tower and the condenser. This system monitors the temperature of the reaction tower in real time and responds to temperature fluctuations, automatically adjusting the heat supply to achieve precise temperature management, ensuring the stability and uniformity of the temperature in the reaction tower, and improving the dynamic adsorption capacity of the adsorbent and the efficiency of carbon capture operation; the other is a concentrated photovoltaic intelligent temperature control system. This system continuously monitors the operating temperature of the photovoltaic cells and recovers the waste heat of the photovoltaic cells to the heat energy cycle of the motor boiler through the first water supply pipeline, significantly reducing boiler energy consumption while ensuring optimal power generation efficiency.

[0026] 3. The utility model carbon purification and storage unit adopts efficient heat recovery technology. The released heat is recovered by the second water supply pipeline and stored in the heat storage tank. When the intelligent temperature control system detects that the temperature in the reaction tower drops below the predetermined threshold, the second controller will activate the second water pump, so that the heat storage tank releases heat and heats the reaction tower through reverse circulation, thereby realizing the closed-loop circulation and efficient utilization of system energy and improving the overall energy recovery rate. Attached Figure Description

[0027] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0028] Figure 1 This is a system schematic diagram of an embodiment of the present utility model;

[0029] In the picture:

[0030] 1. Solar Concentrating Photovoltaic Device; 101. Concentrator; 102. Photovoltaic Panel; 103. Converter; 104. Inverter; 105. First Temperature Sensor; 106. First Controller; 107. Heat Absorber; 108. First Water Pump; 109. Water Tank; 2. Carbon Capture Device; 201. Reaction Tower; 202. First Fan; 203. Electric Boiler; 204. Second Fan; 205. Vacuum Pump; 206. Second Temperature Sensor; 207. Second Controller; 208. Heat Storage Tank; 209. Second Water Pump; 3. Carbon Purification and Storage Device; 301. Condenser; 302. Compressor; 303. Carbon Storage Tank; 4. First Main Cable; 5. 6. Main cable; 7. First cable; 8. Second cable; 9. Third cable; 10. Fourth cable; 11. Fifth cable; 12. Sixth cable; 13. Seventh cable; 14. Eighth cable; 15. First water supply pipeline; 16. Third shut-off valve; 16. Second water supply pipeline; 17. Fourth shut-off valve; 18. Air intake pipeline; 19. First air intake valve; 10. Intake pipeline; 11. Second air intake valve; 12. First air exhaust pipeline; 13. First shut-off valve; 24. Second shut-off valve. Detailed Implementation

[0031] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, 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 invention pertains.

[0032] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a direct air carbon capture system, such as... Figure 1 As shown, it includes a solar concentrating photovoltaic device 1, a carbon capture device 2, and a carbon purification and storage device 3. The carbon capture device 2 is connected to the solar concentrating photovoltaic device 1 and the carbon purification and storage device 3.

[0033] like Figure 1 As shown, the solar concentrating photovoltaic device 1 includes a photovoltaic panel 102, a concentrator 101 is disposed in front of the photovoltaic panel 102 to facilitate focusing sunlight onto the surface of the photovoltaic panel, and the photovoltaic panel 102 is used to generate electricity; a heat absorber 107 is connected to the back of the photovoltaic panel 102 to absorb the heat of the photovoltaic panel; the heat absorber 107 adopts a heat pipe device, the evaporation section of which is directly connected to the back of the photovoltaic panel 102, and the condensation section is connected to the first water supply pipe 14; the photovoltaic panel 102 terminal is connected to the converter 103 through a first cable 6, and the converter 103 is connected to the inverter 104 through a second cable 7.

[0034] During operation, the solar concentrating photovoltaic device 1 uses a concentrator 101 to focus sunlight onto photovoltaic cells. The photovoltaic panels 102 then generate direct current (DC) through a photoelectric reaction. This DC is transmitted via a first cable 6 to a converter 103 for voltage and current regulation to meet the voltage and current requirements of the electrical equipment. The inverter 104 then converts the regulated DC into alternating current (AC), which is then transmitted to the electrical equipment via a cable.

[0035] It also includes a concentrated photovoltaic intelligent temperature control system, which includes a first temperature sensor 105 and a first controller 106. For example... Figure 1 As shown, the probe of the first temperature sensor 105 is mounted on the photovoltaic panel 102, and the probe is connected to the body of the first temperature sensor 105 via a third cable 8; the body of the first temperature sensor 105 is connected to the first controller 106 via a fourth cable 9, and the first controller 106 is connected to the first water pump 108 via a fifth cable 10. The condensation section of the heat absorber 107 is connected to the first water supply pipe 14, and the first water pump 108 is installed between the condensation section of the heat absorber 107 and the water tank 109. A third shut-off valve 141 is installed between the first water pump 108 and the water tank 109. The heat absorber 107 is also connected to the carbon capture device 2 via the first water supply pipe 14. The heat absorber 107, the first water pump 108, the water tank 109, and the carbon capture device 2 are all connected via the first water supply pipe 14.

[0036] The optimal power generation temperature for photovoltaic panels is around 25℃. Temperatures above 25℃ will reduce the power generation efficiency of the photovoltaic panels. A first temperature sensor 105 monitors the temperature of the photovoltaic panel 102 in real time. When the temperature exceeds 25℃, the first temperature sensor 105 sends a signal to the first controller 106. At this time, the third shut-off valve 141 is open, and the first controller 106 starts the first water pump 108. Water in the water tank 109 flows through the heat absorber 107, carrying away the heat from the condensation section of the heat absorber 107. This heat is then transferred to the carbon capture device 2 through the first water supply pipe 14. This process lowers the temperature of the photovoltaic panel, ensuring power generation efficiency while also providing heat to the carbon capture device 2.

[0037] like Figure 1 As shown, the carbon capture device 2 includes a reaction tower 201, in which an adsorbent is placed; the inlet of the reaction tower 201 is connected to an air inlet pipe 16 and an air inlet pipe 17, and the outlet is connected to a first air exhaust pipe 18, a second air exhaust pipe 19, a mixed gas exhaust pipe 20, and a second water supply pipe 15.

[0038] A first fan 202 is installed on the air intake pipe 16, and a first air intake valve 161 is installed between the first fan 202 and the reaction tower 201; a first air exhaust valve 181 is installed on the first air exhaust pipe 18, and the two valves are used to control the intake and exhaust stages of the adsorption process respectively.

[0039] One end of the air inlet pipe 17 is connected to the reaction tower 201, and the other end is connected to the air outlet of the electric boiler 203. A second fan 204 is installed on the air inlet pipe 17. A vacuum pump 205 is installed between the reaction tower 201 and the second air exhaust pipe 19. A second exhaust valve 191 is installed between the reaction tower 201 and the vacuum pump 205 to control the vacuuming process during the desorption stage. A second air inlet valve 171 is installed on the air inlet pipe 17, located between the second fan 204 and the reaction tower 201, to control the steam purging process during the desorption stage. The water inlet of the electric boiler 203 is connected to the first water supply pipe 14, which is connected to the water tank 109, the first water pump 108, and the heat absorber 107. The waste heat from the photovoltaic panel 102 is transferred to the boiler through the water circulation system. The electric boiler 203 continues to heat the circulating hot water to generate high-temperature steam.

[0040] During the ambient temperature adsorption stage of reaction tower 201, both the first inlet valve 161 and the first exhaust valve 181 remain open. Outside air enters reaction tower 201 through the air inlet pipe 16 via the first fan 202. After the adsorbent captures carbon dioxide, the pure air is discharged to the outside through the first air exhaust pipe 18, thus completing the adsorption stage.

[0041] The desorption stage of reaction tower 201 is divided into a vacuum stage and a steam purging stage. First, in the vacuum stage, the first inlet valve 161, the second inlet valve 171, the first exhaust valve 181, and the third exhaust valve 21 are closed, while the second exhaust valve 191 is opened. The vacuum pump 205 extracts air from reaction tower 201, which is then discharged to the outside through the second air exhaust pipe 19. In the steam purging stage, the first inlet valve 161, the first exhaust valve 181, and the second exhaust valve 191 are closed, while the second inlet valve 171, the third exhaust valve 21, the first stop valve 22, the second stop valve 23, and the fourth stop valve 151 are opened. High-temperature steam generated by the electric boiler 203 enters reaction tower 201 after passing through the second fan 204. After a period of time, the hot steam and carbon dioxide mixture enter the carbon purification and storage device 3.

[0042] It also includes an intelligent temperature control system, which comprises a second temperature sensor 206, a second controller 207, a heat storage tank 208, and a second water pump 209. The probe of the second temperature sensor 206 is mounted on the reaction tower 201, and is connected to its main body via a sixth cable 11. The main body of the second temperature sensor 206 is connected to the second controller 207 via a seventh cable 12, and the second controller 207 is connected to the second water pump 209 via an eighth cable 13. The second water pump 209 is mounted on a second water supply pipeline 15 between the heat storage tank 208 and the reaction tower 201. A circulating water network is installed inside the reaction tower 201, and this network is connected to the second water supply pipeline 15, which is a bidirectional circulation pipeline.

[0043] The carbon purification and storage device 3 includes a condenser 301. The inlet end of the condenser 301 is connected to the reaction tower 201, and the outlet end of the condenser 301 is connected to the inlet end of the compressor 302. The outlet end of the compressor 302 is connected to the inlet end of the carbon storage tank 303. The reaction tower is connected to the condenser 301, the compressor 302, and the carbon storage tank 303 via a mixed gas exhaust pipe 20. The mixed gas exhaust pipe 20 is equipped with a third exhaust valve 21, a first shut-off valve 22, and a second shut-off valve 23. The third exhaust valve 21 is located between the condenser 301 and the reaction tower 201, the first shut-off valve 22 is located between the condenser 301 and the compressor 302, and the second shut-off valve 23 is located between the compressor 302 and the carbon storage tank 303, and is used to control the gas flow on the mixed gas exhaust pipe 20.

[0044] A heat storage tank 208 and a second water pump 209 are provided between the reaction tower 201 and the condenser 301. The reaction tower 201, the second water pump 209, the heat storage tank 208, and the condenser 301 are connected through a second water supply pipeline 15. A fourth shut-off valve 151 is provided on the second water supply pipeline 15, located between the condenser 301 and the heat storage tank 208, and is used to control the water circulation of the second water supply pipeline 15.

[0045] The high-temperature carbon dioxide and water vapor mixture from reaction tower 201 enters condenser 301 for cooling and separation. The purified carbon dioxide gas is then compressed in compressor 302 and subsequently stored in carbon storage tank 303 for long-term or temporary storage. The mixture releases heat in condenser 301, which is stored in heat storage tank 208 through second water supply line 15 for subsequent heating of reaction tower 201.

[0046] The optimal desorption temperature is 90℃-100℃. When the temperature of reaction tower 201 is below 90℃, the second controller 207 controls the second water pump 209 to activate the heat release mechanism, causing the hot water in the heat storage tank 208 to flow to the circulating water network of the reaction tower. After heat exchange with the reaction tower, this cooling water eventually enters the condenser to continue cooling the hot steam, thus forming a closed loop. Since the electric boiler 203 provides a constant amount of heat, and the intelligent temperature control system can precisely control the temperature of reaction tower 201 according to temperature changes, it avoids the impact of temperature fluctuations on the adsorbent performance. Therefore, the intelligent temperature control system and the electric boiler 203 are complementary, and their combination can further improve the performance of the carbon capture device.

[0047] Inverter 104 is connected to the first main cable 4 and the second main cable 5. The first main cable 4 is connected to and powered by the first water pump 108, the first fan 202 and the vacuum pump 205. The second main cable 5 is connected to and powered by the first temperature sensor 105, the first controller 106, the motor boiler 203, the second fan 204, the second temperature sensor 206, the second controller 207, the second water pump, the condenser 301 and the compressor 302.

[0048] The specific working process of this embodiment is as follows:

[0049] During operation, the solar concentrating photovoltaic device 1 uses a concentrator 101 to focus sunlight onto photovoltaic cells. The photovoltaic panels 102 then generate direct current (DC) through a photoelectric reaction. This DC is transmitted via a first cable 6 to a converter 103 for voltage and current regulation to meet the voltage and current requirements of the electrical equipment. An inverter 104 then converts the regulated DC into alternating current (AC), which is then transmitted to the electrical equipment via a cable.

[0050] The first temperature sensor 105 monitors the temperature of the photovoltaic panel 102 in real time. When the temperature is higher than 25°C, the first temperature sensor 105 sends a signal to the first controller 106. At this time, the third shut-off valve 141 is in the open state. The first controller 106 controls the first water pump 108 to turn on. The first water pump 108 draws water from the water tank 109, which absorbs heat through the heat absorber 107 and is then sent to the electric boiler 203 of the carbon capture device 2.

[0051] During the ambient temperature adsorption stage of reaction tower 201, both the first inlet valve 161 and the first exhaust valve 181 remain open. Outside air enters reaction tower 201 through the air inlet pipe 16 via the first fan 202. After the adsorbent captures carbon dioxide, the pure air is discharged to the outside through the first air exhaust pipe 18, thus completing the adsorption stage.

[0052] The desorption stage of reaction tower 201 is divided into a vacuum stage and a steam purging stage. First, the vacuum stage is carried out by closing the first inlet valve 161, the second inlet valve 171, the first exhaust valve 181 and the third exhaust valve 21, and opening the second exhaust valve 191. The vacuum pump 205 extracts the air from the reaction tower 201 and discharges it to the outside through the second air exhaust pipe 19.

[0053] During the steam purging stage, the first inlet valve 161, the first exhaust valve 181, and the second exhaust valve 191 are closed, while the second inlet valve 171, the third exhaust valve 21, the first shut-off valve 22, the second shut-off valve 23, and the fourth shut-off valve 151 are opened. High-temperature steam generated by the electric boiler 203 enters the reaction tower 201 via the second fan 204. After a period of time, the hot steam and carbon dioxide mixture enters the condenser 301 for cooling and separation. The released heat is then stored in the heat storage tank 208 via the second water supply pipe 15. The cooled carbon dioxide is compressed in the compressor 302 and then stored in the carbon storage tank 303.

[0054] The reaction tower 201 is connected to the second temperature sensor 206. When the temperature of the reaction tower is below 90°C, the second temperature sensor 206 sends a signal to the second controller 207. The second controller 207 controls the working state of the second water pump 209 and drives the heat storage tank 208 to run, thereby transferring heat to the reaction tower 201 in real time to ensure the optimal temperature of the reaction tower 201.

[0055] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A direct air carbon capture system, characterized in that, This includes a solar concentrating photovoltaic (PV) device, which includes a photovoltaic panel. A heat absorber is connected to the back of the photovoltaic panel. The heat absorber uses a heat pipe device, with its evaporation section directly connected to the back of the photovoltaic panel and its condensation section connected to the first water supply pipeline. One end of the first water supply pipeline is connected to the water tank via the first water pump, and the other end is connected to the carbon capture device. The carbon capture device includes a reaction tower, which is connected to an electric boiler via an inlet pipe and to a carbon purification and storage device via a mixed gas exhaust pipe; the electric boiler is connected to the other end of the first water supply pipe. A solar concentrating photovoltaic (PV) device and a carbon capture device are connected to a PV intelligent temperature control system. The PV intelligent temperature control system includes a first temperature sensor installed on the PV panel, the first temperature sensor is connected to a first controller, and the first controller is connected to a first water pump. An intelligent temperature control system is installed between the carbon capture device and the carbon purification and storage device.

2. The direct air carbon capture system as described in claim 1, characterized in that, The heat absorber is connected to the first water pump, water tank, and electric boiler via a first water supply pipeline. A third shut-off valve is installed between the water pump and the water tank. The first water supply pipeline is a one-way pipeline.

3. The direct air carbon capture system as described in claim 1, characterized in that, The reaction tower is equipped with an adsorbent and also contains a circulating water network.

4. The direct air carbon capture system as described in claim 1, characterized in that, The reaction tower is also connected to an air inlet pipe, a first air exhaust pipe, a second air exhaust pipe, and a second water supply pipe; a first fan is installed on the air inlet pipe, and a first air inlet valve is installed between the first fan and the reaction tower; a second fan is installed on the air inlet pipe, and a second air inlet valve is installed between the second fan and the reaction tower; a vacuum pump is installed on the second air exhaust pipe, and a second exhaust valve is installed between the reaction tower and the vacuum pump; the reaction tower and the condenser are connected through a second water supply pipe.

5. A direct air carbon capture system as described in claim 1, characterized in that, The carbon purification and storage device includes a condenser, the inlet of which is connected to the reaction tower, the outlet of which is connected to the inlet of the compressor, and the outlet of the compressor is connected to the inlet of the carbon storage tank; the reaction tower, condenser, compressor, and carbon storage tank are connected by a mixed gas exhaust pipeline.

6. The direct air carbon capture system as described in claim 5, characterized in that, The mixed gas exhaust pipe between the condenser and the reaction tower is equipped with a third exhaust valve, the condenser and the compressor are equipped with a first shut-off valve, and the compressor and the carbon storage tank are equipped with a second shut-off valve.

7. A direct air carbon capture system as described in claim 1, characterized in that, The intelligent temperature control system includes a second temperature sensor installed on the reaction tower, the second temperature sensor being connected to a second controller, the second controller being connected to a second water pump, and the second water pump being connected to a heat storage tank.

8. A direct air carbon capture system as described in claim 7, characterized in that, The heat storage tank is located between the second water pump and the condenser. The reaction tower, the second water pump, the heat storage tank, and the condenser are connected by a second water supply pipeline, which is a bidirectional circulation pipeline. A fourth shut-off valve is installed between the condenser and the heat storage tank. The second water pump is connected to the circulating water network inside the reaction tower.

9. A direct air carbon capture system as described in claim 1, characterized in that, A concentrator is installed in front of the photovoltaic panel, a converter is connected to the end of the photovoltaic panel, the converter is connected to an inverter, and the inverter is connected to a power transmission line.

10. A direct air carbon capture system as described in claim 9, characterized in that, The power transmission line includes a first main cable and a second main cable. The first main cable connects and supplies power to a first water pump, a first fan, and a vacuum pump. The second main cable connects and supplies power to a first temperature sensor, a first controller, a motor boiler, a second fan, a second temperature sensor, a second controller, a second water pump, a condenser, and a compressor.

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