A renewable energy-driven direct air carbon capture device

Abstract

This utility model discloses a renewable energy-driven direct air carbon capture device, belonging to the field of carbon capture technology. It includes: a wind-solar-thermal-power (CHP) system, an air carbon capture module, and a product collection system. The CHP system is connected to both the air carbon capture module and the product collection system. The air carbon capture module includes an air contactor. The air contactor is filled with an adsorbent and connected to the product collection system. The CHP system includes a solar thermal device and a wind-solar power generation device. The solar thermal device is connected to the air contactor. This utility model provides the direct air carbon capture device with the heat and electricity required for regeneration through the CHP system, reducing carbon dioxide emissions. The air contactor operates intermittently, its operating time being coupled with the output curve of the renewable energy source at the device's location, adapting to the intermittency and fluctuation of renewable energy.

Description

Technical Field

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

[0002] Industries such as oil and petrochemicals, as major carbon emitters, need to undergo clean energy substitution and low-carbon transformation. However, some carbon sources cannot be cleanly replaced, making CCS (carbon capture and storage) / CCUS (carbon capture, utilization, and storage) technologies a fallback option. Direct air carbon capture (DAC) is an emerging negative carbon technology, and its development is not only an important means of addressing climate change but also a key technology for achieving sustainable development goals. Through its positive effects in reducing carbon dioxide concentration and promoting the use of clean energy, DAC technology will play an increasingly important role in future climate governance.

[0003] The prior art (publication number CN223112707U) discloses a flue gas carbon dioxide capture device, including a dust settling chamber, an absorption and regeneration tower, a liquid storage tank, and a CO2 storage tank. The dust settling chamber has a flue gas inlet and an outlet. The absorption and regeneration tower has multiple absorption units arranged from bottom to top, each unit including a packing assembly and a spray assembly. The packing assembly is filled with a solid adsorbent and equipped with a heating component; the spray assembly sprays water into the packing assembly. The absorption and regeneration tower has a liquid outlet, an outlet, and an absorption inlet. The flue gas outlet is connected to the absorption inlet. The outlet is simultaneously connected to the CO2 storage tank and the atmosphere. The liquid storage tank has a water inlet, a reflux outlet, and a water outlet. The liquid outlet is connected to the reflux outlet, and the water outlet is connected to the spray assembly. This technology solves the problems of complex flue gas carbon dioxide capture devices, high energy consumption, and low captured carbon dioxide concentration. However, the aforementioned prior art still suffers from high thermal and electrical energy consumption and high carbon dioxide emissions.

[0004] In recent years, the amount of electricity generated from renewable energy sources has been increasing, but the utilization rate of renewable energy is relatively low, with relatively high curtailment rates for wind power and solar power. Furthermore, the power generation time of renewable energy sources does not match the operating time of carbon capture devices. Therefore, there is an urgent need to develop a direct air carbon capture device driven by renewable energy. Utility Model Content

[0005] To address the aforementioned issues, this utility model discloses a renewable energy-driven direct air carbon capture device, comprising: a wind-solar-thermal-power cogeneration system, an air carbon capture module, and a product collection system; The combined wind, solar and thermal power system is connected to the air carbon capture module and the product collection system, respectively. The air carbon capture module includes an air contactor; The air contactor is filled with an adsorbent and is connected to the product collection system. The combined wind, solar, and thermal power system includes solar thermal equipment and wind and solar power generation equipment; The photothermal device is connected to an air contactor; The wind and solar power generation equipment includes solar cells, wind turbines, batteries, inverters, and intelligent control units; The solar cells, wind turbine, and storage battery are respectively connected to the inverter; The inverter is connected to the air carbon capture module and the product collection system, respectively. The intelligent control unit is connected to the inverter, air contactor, and product collection system, respectively.

[0006] Furthermore, the air carbon capture module also includes a water washing spray device; The water washing spray device is installed on top of the air carbon capture module.

[0007] Furthermore, the air carbon capture module also includes a product collection pipeline and an air outlet; The product collection pipeline is located at the bottom of the air carbon capture module; The air outlet is located at the top of the air carbon capture module.

[0008] Furthermore, the photothermal device includes a focusing component, a receiver, and a tracking control mechanism; The focusing component is fixedly connected to the receiver; The focusing component is rotatably connected to the tracking control mechanism.

[0009] Furthermore, it also includes the air supply system; The air supply system is connected to the air contactor; The inverter is connected to the air supply system.

[0010] Furthermore, the air supply system includes a fan and air supply ducts; The fan is connected to the air contactor via an air supply duct; The intelligent control unit is connected to the fan.

[0011] Furthermore, the product collection system includes a water treatment unit; One end of the water treatment unit is connected to the product collection pipeline, and the other end is connected to the water washing spray equipment.

[0012] Furthermore, the product collection system also includes a water storage tank; One end of the water storage tank is connected to the water treatment unit, and the other end is connected to the water washing spray equipment.

[0013] Furthermore, the product collection system also includes a water washing pump; One end of the water washing pump is connected to the water storage tank, and the other end is connected to the water washing spray equipment; The water washing pump is connected to the intelligent control unit.

[0014] Furthermore, the product collection system also includes a water recovery pipeline and a water delivery pipeline; One end of the water recovery pipeline is connected to the product collection pipeline, and the other end is connected to the water treatment unit; One end of the water pipeline is connected to the water washing pump, and the other end is connected to the water washing spray equipment.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: It proposes a direct air carbon capture device driven by renewable energy, which provides the heat and electricity required for regeneration to the direct air carbon capture device through a wind-solar-thermal-power cogeneration system, thereby reducing carbon dioxide emissions. The entire device is designed systematically to reduce energy consumption. The independently developed air contactor operates intermittently, and its operating time is coupled with the output curve of the renewable energy source at the device location. After regeneration, the adsorbent is sprayed with water to wash away impurities adhering to its surface. The water after washing enters the water treatment unit through the product collection pipeline and then enters the storage tank for recycling. It can be fully coupled with renewable energy and adapt to the intermittency and fluctuation of renewable energy.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a renewable energy-driven direct air carbon capture device according to an embodiment of the present invention is shown.

[0019] Reference numerals: 1. Combined wind, solar, thermal, and power system; 1-1. Solar thermal equipment; 1-2. Wind and solar power generation equipment; 1-21. Solar cell; 1-22. Wind turbine; 1-23. Battery; 1-24. Inverter; 1-25. Intelligent control unit; 2. Air supply system; 2-1. Fan; 2-2. Air supply pipeline; 3. Air carbon capture module; 3-1. Air contactor; 3-2. Water washing and spraying equipment; 3-3. Product collection pipeline; 4. Product collection system; 4-1. Water recovery pipeline; 4-2. Water treatment unit; 4-3. Water storage tank; 4-4. Water washing pump; 4-5. Water delivery pipeline. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Figure 1 A schematic diagram of a renewable energy-driven direct air carbon capture device according to an embodiment of the present invention is shown. Figure 1 As shown in the figure, a renewable energy-driven direct air carbon capture device proposed in this embodiment includes: a wind-solar-thermal-power cogeneration system 1, an air carbon capture module 3, and a product collection system 4. The wind-solar-thermal-power cogeneration system 1 is connected to the air carbon capture module 3 and the product collection system 4, respectively. The air carbon capture module 3 and the product collection system 4 are connected; The air carbon capture module 3 includes an air contactor 3-1; The air contactor 3-1 is filled with an adsorbent and is connected to the product collection system 4. The combined wind, solar and thermal power system 1 includes a solar thermal device 1-1 and a wind and solar power generation device 1-2, which are used to provide heat and electricity to the device respectively; The photothermal device 1-1 is connected to the air contactor 3-1; The wind and solar power generation equipment 1-2 includes solar cells 1-21, wind turbine generators 1-22, batteries 1-23, inverters 1-24, intelligent control units 1-25, and auxiliary components, which are used to power the air supply system 2, the air carbon capture module 3, and the product collection system 4. The solar cell 1-21, wind turbine 1-22, and storage battery 1-23 are respectively connected to the inverter 1-24; Specifically, solar cell 1-21 is connected to an inverter 1-24; wind turbine 1-22 is connected to an inverter 1-24; and battery 1-23 is connected to an inverter 1-24. Each of the inverters 1-24 is connected to the air carbon capture module 3 and the product collection system 4, respectively. The intelligent control units 1-25 are connected to the inverter 1-24, the air contactor 3-1, and the product collection system 4, respectively. Specifically, the intelligent control units 1-25 are connected to the inverter 1-24, the fan 2-1, the air contactor 3-1, and the water washing pump 4-4, respectively.

[0022] For example, the adsorbent in the air contactor 3-1 is independently developed and has a resolution rate of over 95%.

[0023] This invention relates to a renewable energy-driven direct air carbon capture device. By capturing extremely low concentrations of carbon dioxide from the air, it achieves a synergistic carbon reduction effect, effectively improving the coupling between renewable energy and the direct air carbon capture device, reducing carbon dioxide emissions, increasing the renewable energy utilization rate, and realizing the efficient integration of renewable energy utilization and direct air carbon capture. Based on a self-developed air contactor 3-1 and adsorbent, the device's operating cycle can be adjusted according to the renewable energy output at the installation location, exhibiting good adaptability and intermittent characteristics to fluctuations in renewable energy. It is suitable for scenarios where renewable energy is used to directly capture CO2 from the air, enabling intermittent operation adapted to renewable energy and possessing the ability to fully couple with the renewable energy output curve.

[0024] The wind-solar-thermal-power cogeneration system 1 provides the heat and electricity required for regeneration of the direct air carbon capture device, reducing carbon dioxide emissions. The entire device is designed systematically to reduce energy consumption. The independently developed air contactor 3-1 operates intermittently, and its operating time is coupled with the output curve of the renewable energy source at the device location. After regeneration, the adsorbent is sprayed with water to wash away impurities on its surface. The water after washing enters the water treatment unit 4-2 through the product collection pipeline 3-3, and then enters the water storage tank 4-3 for recycling. It can be fully coupled with renewable energy and adapt to the intermittency and fluctuation of renewable energy.

[0025] In some embodiments, the air carbon capture module 3 further includes a water washing spray device 3-2; The water washing spray device 3-2 is installed on top of the air carbon capture module 3.

[0026] In some embodiments, the air carbon capture module 3 further includes a product collection pipeline 3-3 and an air outlet; The product collection pipeline 3-3 is located at the bottom of the air carbon capture module 3; The air outlet is located at the top of the air carbon capture module 3. The air outlet is directly connected to the atmosphere.

[0027] Air contactor 3-1 is filled with adsorbent to remove CO2 from the air from the air supply system 2. The decarbonized air is discharged from the air outlet at the top of air contactor 3-1. Water washing spray equipment 3-2 is used for rinsing after adsorbent desorption. Product collection pipeline 3-3 is used to collect rinsing wastewater and intermediate product water.

[0028] In some embodiments, the photothermal device 1-1 includes a focusing component, a receiver, and a tracking control mechanism; The focusing component is fixedly connected to the receiver; The focusing component is rotatably connected to the tracking control mechanism.

[0029] The solar thermal device 1-1 is mainly used to convert solar energy into thermal energy to provide thermal energy for the desorption process of the air carbon capture module 3.

[0030] In some embodiments, the renewable energy-driven direct air carbon capture device further includes an air supply system 2; The air supply system 2 is connected to the air contactor 3-1; The inverters 1-24 are connected to the air supply system 2.

[0031] In some embodiments, the air supply system 2 includes a fan 2-1 and an air supply duct 2-2; The fan 2-1 is connected to the air inlet of the air contactor 3-1 via the air supply duct 2-2; The intelligent control unit 1-25 is connected to the fan 2-1.

[0032] The fan 2-1 slightly pressurizes the normal pressure air and sends it into the air carbon capture module 3 through the air supply pipeline 2-2.

[0033] In some embodiments, the product collection system 4 includes a water treatment unit 4-2; One end of the water treatment unit 4-2 is connected to the product collection pipeline 3-3, and the other end is connected to the water washing spray equipment 3-2.

[0034] In some embodiments, the product collection system 4 further includes a water storage tank 4-3; One end of the water storage tank 4-3 is connected to the water treatment unit 4-2, and the other end is connected to the water washing spray equipment 3-2.

[0035] In some embodiments, the product collection system 4 further includes a water washing pump 4-4; One end of the water washing pump 4-4 is connected to the water storage tank 4-3, and the other end is connected to the water washing spray equipment 3-2; The water washing pump 4-4 is connected to the intelligent control unit 1-25.

[0036] In some embodiments, the product collection system 4 further includes a water recovery pipeline 4-1 and a water delivery pipeline 4-5; One end of the water recovery pipeline 4-1 is connected to the product collection pipeline 3-3, and the other end is connected to the inlet of the water treatment unit 4-2; One end of the water supply pipeline 4-5 is connected to the water washing pump 4-4, and the other end is connected to the inlet of the water washing spray equipment 3-2.

[0037] Water recycling line 4-1 is used to transport the water produced by air contactor 3-1 to water treatment unit 4-2, and the treated clean water enters water storage tank 4-3 for recycling.

[0038] The working process of this renewable energy-driven direct air carbon capture device is as follows: Solar thermal equipment 1-1 converts solar energy into thermal energy, providing heat for the desorption process of air carbon capture module 3. Wind and solar power generation equipment 1-2 provides electricity to the system.

[0039] The blower 2-1 slightly pressurizes the atmospheric air and sends it to the air carbon capture module 3 through the air supply pipeline 2-2. The air contactor 3-1 removes CO2 from the air, and the decarbonized air is discharged from the air outlet at the top of the air contactor 3-1. After the set running time, the adsorbent is desorbed to collect carbon dioxide. Then, the desorbed adsorbent is rinsed by the water washing spray equipment 3-2. The product collection pipeline 3-3 collects the rinsing wastewater and intermediate product water and supplies them to the water treatment unit 4-2. The water treatment unit 4-2 treats the wastewater and then sends it to the storage tank 4-3 for recycling.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A direct air carbon capture device driven by renewable energy, characterized in that, include: Wind-solar-thermal-power cogeneration system (1), air carbon capture module (3) and product collection system (4); The wind-solar-thermal-power combined system (1) is connected to the air carbon capture module (3) and the product collection system (4) respectively; The air carbon capture module (3) includes an air contactor (3-1). The air contactor (3-1) is filled with adsorbent and connected to the product collection system (4); The wind-solar-thermal-power combined system (1) includes solar thermal equipment (1-1) and wind-solar power generation equipment (1-2). The photothermal device (1-1) is connected to the air contactor (3-1); The wind and solar power generation equipment (1-2) includes solar cells (1-21), wind turbine generator (1-22), battery (1-23), inverter (1-24) and intelligent control unit (1-25). The solar cells (1-21), wind turbine (1-22), and storage battery (1-23) are respectively connected to the inverter (1-24); The inverters (1-24) are connected to the air carbon capture module (3) and the product collection system (4) respectively; The intelligent control unit (1-25) is connected to the inverter (1-24), the air contactor (3-1), and the product collection system (4), respectively.

2. The renewable energy driven direct air carbon capture device of claim 1, wherein, The air carbon capture module (3) also includes a water washing spray device (3-2); The water washing spray device (3-2) is installed on top of the air carbon capture module (3).

3. The renewable energy driven direct air carbon capture device of claim 2, wherein, The air carbon capture module (3) also includes a product collection pipeline (3-3) and an air outlet; The product collection pipeline (3-3) is located at the bottom of the air carbon capture module (3); The air outlet is located on top of the air carbon capture module (3).

4. The renewable energy driven direct air carbon capture device of claim 1, wherein, The photothermal device (1-1) includes a focusing component, a receiver, and a tracking control mechanism; The focusing component is fixedly connected to the receiver; The focusing component is rotatably connected to the tracking control mechanism.

5. The renewable energy driven direct air carbon capture device of claim 1, wherein, It also includes the air supply system (2); The air supply system (2) is connected to the air contactor (3-1); The inverter (1-24) is connected to the air supply system (2).

6. The renewable energy driven direct air carbon capture device of claim 5, wherein, The air supply system (2) includes a fan (2-1) and an air supply pipeline (2-2); The fan (2-1) is connected to the air contactor (3-1) through the air supply pipeline (2-2); The intelligent control unit (1-25) is connected to the fan (2-1).

7. The renewable energy driven direct air carbon capture device of claim 3, wherein, The product collection system (4) includes a water treatment unit (4-2). One end of the water treatment unit (4-2) is connected to the product collection pipeline (3-3), and the other end is connected to the water washing spray equipment (3-2).

8. The renewable energy driven direct air carbon capture device of claim 7, wherein, The product collection system (4) also includes a water storage tank (4-3). One end of the water storage tank (4-3) is connected to the water treatment unit (4-2), and the other end is connected to the water washing spray equipment (3-2).

9. The renewable energy driven direct air carbon capture device of claim 8, wherein, The product collection system (4) also includes a water washing pump (4-4). One end of the water washing pump (4-4) is connected to the water storage tank (4-3), and the other end is connected to the water washing spray equipment (3-2); The water washing pump (4-4) is connected to the intelligent control unit (1-25).

10. The renewable energy driven direct air carbon capture device of claim 9, wherein, The product collection system (4) further comprises a water recovery pipeline (4-1) and a water delivery pipeline (4-5); One end of the water recovery pipeline (4-1) is connected with the product collection pipeline (3-3), and the other end is connected with a water treatment unit (4-2); One end of the water delivery pipeline (4-5) is connected with a water washing pump (4-4), and the other end is connected with a water washing spraying device (3-2).

Images