Direct air carbon capture equipment

Abstract

The present invention relates to the technical field of direct air carbon capture, and in particular to direct air carbon capture equipment, including a shell, an adsorption chamber, a rotating shell and other devices, wherein a liquid storage chamber is provided inside the shell, a liquid infusion tube is rotatably connected to the top of the rotating shell, an end of the liquid infusion tube close to the rotating shell is fixedly connected to an atomizing nozzle, the rotating tube is rotatably connected to the rotating shell, and a row of one-way nozzles are laterally fixedly connected to the outer wall of the rotating tube. The present invention sprays surfactants using an atomizing nozzle, so that gas molecules are more likely to meet and interact with surfactant molecules, and the surfactant forms convection with the gas during the spraying process from top to bottom, and this convection mode helps to promote the full mixing and contact between the surfactant and the gas, and the one-way nozzle sprays gas adhering to the surfactant, which helps the ionic liquid to capture carbon dioxide faster after the gas enters the ionic liquid, thereby enhancing the carbon capture effect.

Description

Technical Field

[0001] The present invention relates to the technical field of direct air carbon capture, and in particular to direct air carbon capture equipment. Background Art

[0002] Direct air carbon capture technology refers to the process of directly absorbing or adsorbing carbon dioxide from the air. The principle of this technology is to use adsorbents to capture carbon dioxide. After capture, the adsorbent is restored to its original state by changing heat, pressure or temperature, and can be used to capture carbon dioxide again.

[0003] Surfactants can significantly reduce the surface tension of the gas-liquid interface, making gas molecules easier to dissolve and diffuse in the adsorbent, helping to increase the contact area between the gas and the adsorbent and improving the efficiency of carbon capture. Therefore, in the process of carbon capture, the appropriate use of surfactants can help enhance the capture effect.

[0004] At present, the existing direct air carbon capture equipment uses surfactants to improve the carbon capture efficiency when it is working. However, directly mixing the surfactant into the ionic liquid will cause the contact area between the surfactant and the gas to decrease, thereby reducing the efficiency of the surfactant in adsorbing the gas, making the use of the surfactant ineffective. The surfactant and the ionic liquid are in contact with the gas at the same time, competing for the adsorption sites between the ionic liquid and carbon dioxide, resulting in a decrease in the carbon dioxide adsorption capacity of the ionic liquid. At the same time, the surfactant cannot fully contact the gas, thereby reducing the carbon dioxide adsorption efficiency, resulting in a lower carbon dioxide removal rate and a lower carbon capture effect. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of poor carbon capture efficiency in the prior art and to propose an air direct carbon capture device.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: air direct carbon capture equipment includes a housing and also includes:

[0007] An adsorption chamber, the interior of the adsorption chamber is filled with ionic liquid, an air outlet pipe is fixedly connected to the top of the shell, the air outlet pipe is communicated with the adsorption chamber, a liquid storage chamber is opened inside the shell, the liquid storage chamber is located below the adsorption chamber, a conveying mechanism is connected between the liquid storage chamber and the adsorption chamber, and a liquid outlet pipe is fixedly connected to the outer wall of the shell, the liquid outlet pipe is communicated with the adsorption chamber;

[0008] A rotating shell, the rotating shell is rotatably connected to the inside of the shell and is located at the bottom center of the adsorption chamber, the bottom of the rotating shell is rotatably connected to an air inlet pipe, the air inlet pipe is communicated with the inside of the rotating shell, the air inlet pipe passes through the shell downward, the top of the rotating shell is rotatably connected to an infusion pipe, one end of the infusion pipe close to the rotating shell is fixedly connected to an atomizing nozzle, the atomizing nozzle is located inside the rotating shell, and one end of the infusion pipe away from the rotating shell passes through the shell and is fixedly connected to the shell;

[0009] A driving mechanism, the driving mechanism is located inside the housing and is used to drive the rotating housing to rotate;

[0010] Rotating tubes, there are four rotating tubes, the four rotating tubes are distributed in a circumferential array on the outer wall of the rotating shell and are located in the adsorption chamber, the rotating tube is rotatably connected to the rotating shell, the rotating shell is connected to the inside of the rotating tube, and the outer wall of the rotating tube is transversely fixedly connected to a row of one-way nozzles;

[0011] A liquid level sensor is fixedly mounted on the inner wall of the adsorption chamber and is used to monitor the height of the ionic liquid.

[0012] Preferably, the conveying mechanism comprises an internal water pump fixedly installed inside the shell, a liquid extraction pipe is fixedly connected between the internal water pump and the liquid storage chamber, and a liquid inlet pipe is fixedly connected to the side wall of the internal water pump, and the liquid inlet pipe is used to discharge the ionic liquid into the adsorption chamber.

[0013] Preferably, the inner part of the outer shell is rotatably connected to a liquid separator column, and the liquid separator column is located above the rotating shell. The end of the liquid inlet pipe away from the internal water pump is rotatably connected to the top of the liquid separator column and is connected to the interior of the liquid separator column. The outer wall of the liquid separator column is fixedly connected to a liquid spray rack, and a nozzle is provided at the bottom of the liquid spray rack.

[0014] Preferably, a second motor is fixedly installed inside the shell, and the output end of the second motor is fixedly connected to a fourth gear. A third gear is fixedly installed on the outer wall of the separatory column, and the third gear is meshed with the fourth gear. A stirring frame is fixedly connected to the bottom of the separatory column, and the stirring frame is located between the separatory column and the rotating shell.

[0015] Preferably, the driving mechanism comprises a first motor fixedly mounted inside the housing, the output end of the first motor is fixedly connected to a second gear, the outer wall of the rotating shell is fixedly mounted with a first gear, and the second gear is meshed with the first gear.

[0016] Preferably, one end of the rotating tube away from the rotating shell is fixedly connected to a one-way nozzle 2, and one end of the rotating tube away from the rotating shell is fixedly connected to a guide head, the one-way nozzle 2 is located at the center of the guide head, and the guide head is used to change the direction of the airflow sprayed from the one-way nozzle 2.

[0017] Preferably, it also includes an adjustment mechanism, which is used to change the spray angle of the one-way nozzle. The adjustment mechanism includes a servo fixedly mounted on the inner wall of the rotating shell, the output end of the servo fixedly connected to the adjustment gear, the top of the inner wall of the rotating shell is rotatably connected to a gear disk, the gear disk is located above the adjustment gear and meshes with the adjustment gear, and a bevel gear is fixedly mounted on one end of the rotating tube close to the center of the rotating shell, the bevel gear is located below the gear disk and meshes with the gear disk.

[0018] Preferably, a scraper strip is fixedly installed on the side wall of the rotating tube, and a slag collecting trough is provided inside the outer shell. The scraper strip is used to scrape the debris at the bottom of the inner wall of the adsorption chamber into the slag collecting trough. The slag collecting trough is located below the adsorption chamber and is connected to the adsorption chamber. The slag collecting trough is located above the liquid outlet pipe and is connected to the liquid outlet pipe. A valve is provided inside the liquid outlet pipe.

[0019] Preferably, four carbon dioxide sensors are fixedly mounted on the inner wall of the adsorption chamber, and the four carbon dioxide sensors are distributed in a circular array on the inner wall of the adsorption chamber and are located above the liquid level sensor.

[0020] Preferably, a pretreatment chamber is opened inside the shell, and the pretreatment chamber is located below the adsorption chamber. The liquid storage chamber is annular and located at the center of the liquid storage chamber. The air inlet pipe passes downward through the pretreatment chamber. A semiconductor refrigeration plate is fixedly installed inside the shell, and the semiconductor refrigeration plate is located between the liquid storage chamber and the pretreatment chamber, and the heating end of the semiconductor refrigeration plate faces the pretreatment chamber.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] 1. The present invention installs a rotating shell, an atomizing nozzle and a one-way nozzle, and uses the atomizing nozzle to spray the surfactant into the rotating shell. The atomized surfactant droplets are easier to diffuse in the gas, making it easier for gas molecules to meet and interact with the surfactant molecules. The adsorption efficiency between the gas and the surfactant will be improved, which helps the ionic liquid to capture carbon dioxide faster after the gas enters the ionic liquid. The gas is heated by the semiconductor refrigeration plate and then introduced from bottom to top. The heating helps to increase the diffusion rate of the gas. The surfactant forms convection with the gas during the spraying process from top to bottom. This convection method helps to promote the full mixing and contact of the surfactant and the gas, thereby improving the adsorption efficiency, making it easier for gas molecules to diffuse in the ionic liquid, and thus enhancing the carbon capture effect.

[0023] 2. The present invention installs a toothed disk, a rotating tube, a first motor and other devices. The rotating shell drives the rotating tube to rotate. After the gas and the surfactant are fully in contact, they are sprayed out from the one-way nozzle 1 and the one-way nozzle 2 together. The gas and the surfactant have higher kinetic energy when they are mixed and sprayed out, which helps the gas molecules to enter the ionic liquid faster. The rotation of the rotating shell and the rotating tube also helps the gas and the surfactant to be evenly distributed in the ionic liquid, so that the capture effect of the ionic liquid is better. When the adsorption of the ionic liquid tends to be saturated, the rotation of the toothed disk causes the rotating tube to rotate, thereby changing the spray angle of the one-way nozzle 1, so that the one-way nozzle 1 no longer sprays gas vertically upward, optimizing the diffusion path of the gas in the ionic liquid, and extending the flow time of the gas in the ionic liquid. The gas molecules can diffuse more easily and fully into the deep layer of the ionic liquid, thereby improving the capture efficiency.

[0024] 3. The present invention installs devices such as an internal water pump, a separator column and a spray rack, and uses the internal water pump to extract the regenerated ionic liquid in the liquid storage chamber into the separator column. While the separator column rotates, the ionic liquid is sprayed out from the spray rack, and the gas moves upward from the bottom of the adsorption chamber to form convection with the ionic liquid sprayed from the spray rack, which helps to lock the carbon dioxide in the gas in the ionic liquid, reduce the possibility of gas escape, and ensure the efficiency of the carbon capture process. At this time, the liquid outlet pipe slowly discharges the saturated ionic liquid and replaces the saturated ionic liquid in the adsorption chamber. During the replacement process, the gas continues to be introduced without shutting down the equipment, thereby improving the working efficiency of the entire equipment and ensuring the continuity and stability of the capture system.

[0025] 4. The present invention installs devices such as guide heads and scraper plates. When the liquid outlet pipe discharges liquid, the rotating shell drives the scraper plate to rotate, and the impurities existing at the bottom of the inner wall of the adsorption chamber are scraped to the slag collecting tank, and discharged together with the adsorption saturated ionic liquid. The guide head is used to disperse the flow direction of the airflow, so that the gas enters the ionic liquid and is evenly distributed. At the same time, it is beneficial for the gas to blow away the debris adhered to the inner wall of the adsorption chamber, enhance the capture effect, and achieve the effect of cleaning the inside of the adsorption chamber, avoiding the debris from reducing the contact area between the ionic liquid and the gas, thereby reducing the adsorption amount of carbon dioxide, ensuring that the inner wall of the adsorption chamber is smooth and clean, thereby reducing the risk of equipment corrosion and damage and extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the air direct carbon capture equipment proposed in the present invention.

[0027] Figure 2 This is a schematic diagram of the top view of the air direct carbon capture equipment proposed by the present invention.

[0028] Figure 3 for Figure 2Schematic diagram of the cross-sectional axonometric structure in the AA direction.

[0029] Figure 4 for Figure 2 Schematic diagram of the cross-sectional axonometric structure in the BB direction.

[0030] Figure 5 This is a schematic structural diagram of the rotating shell portion of the air direct carbon capture equipment proposed in the present invention.

[0031] Figure 6 This is a schematic diagram of the partial cross-section axonometric structure of the rotating shell of the air direct carbon capture equipment proposed in the present invention.

[0032] Figure 7 This is a schematic structural diagram of the toothed disc portion of the air direct carbon capture equipment proposed in the present invention.

[0033] Figure 8 This is a schematic diagram of the internal structure of the rotating tube of the air direct carbon capture equipment proposed by the present invention.

[0034] Fig. 9 This is a schematic structural diagram of the liquid separation column portion of the air direct carbon capture equipment proposed in the present invention.

[0035] Fig.10 This is a schematic diagram of the internal structure of the liquid separation column and liquid spray rack of the air direct carbon capture equipment proposed in the present invention.

[0036] In the figure: 1 shell, 101 adsorption chamber, 102 liquid storage chamber, 103 pretreatment chamber, 104 air outlet pipe, 2 internal water pump, 201 liquid inlet pipe, 3 rotating shell, 301 air inlet pipe, 302 first gear, 303 first motor, 304 second gear, 305 toothed disc, 4 rotating tube, 401 one-way nozzle one, 401 one-way nozzle two, 402 bevel gear, 403 guide head, 404 scraper strip, 5 atomizing nozzle, 501 infusion tube, 6 steering gear, 601 adjustment gear, 7 liquid distribution column, 701 third gear, 702 second motor, 703 fourth gear, 704 stirring frame, 8 liquid spray frame, 9 slag collecting tank, 10 liquid outlet pipe, 11 liquid level sensor, 12 carbon dioxide sensor, 13 semiconductor refrigeration sheet. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Reference Figures 1 to 4The air direct carbon capture equipment comprises a shell 1, a supporting leg is arranged at the bottom of the shell 1, an adsorption chamber 101 is arranged inside the shell 1, and the interior of the adsorption chamber 101 is filled with an ionic liquid, and the ionic liquid is used to absorb the carbon dioxide gas inside the gas. The ionic liquid can be selected from imidazole ionic liquids, quaternary ammonium salt ionic liquids, pyridine ionic liquids, etc. A liquid level sensor 11 is fixedly installed on the inner wall of the adsorption chamber 101, and the liquid level sensor 11 is used to detect the liquid height in the adsorption chamber 101, so as to determine the content of the ionic liquid. Four carbon dioxide sensors 12 are fixedly installed on the inner wall of the adsorption chamber 101 and are located above the liquid level sensor 11. The four carbon dioxide sensors 12 are fixedly installed on the inner wall of the adsorption chamber 101. The carbon sensors 12 are arranged in a circular array on the inner wall of the adsorption chamber 101. The carbon dioxide sensor 12 is used to detect the carbon dioxide gas content above the liquid surface of the ionic liquid in real time. The housing 1 is provided with a liquid storage chamber 102, which is filled with regenerated ionic liquid. The liquid storage chamber 102 is fixedly connected to an external pipeline for replenishing the ionic liquid. The liquid storage chamber 102 is annular and is located below the adsorption chamber 101. The housing 1 is provided with a pretreatment chamber 103, which is located below the adsorption chamber 101 and at the center of the annular liquid storage chamber 102. A semiconductor refrigeration sheet 13 is fixedly installed inside the housing 1. The semiconductor refrigeration sheet 13 is made of The cooling plate 13 is located between the pretreatment chamber 103 and the liquid storage chamber 102. The side of the semiconductor cooling plate 13 facing the pretreatment chamber 103 is a heat dissipation end for heating the gas. The side of the semiconductor cooling plate 13 facing the inside of the liquid storage chamber 102 is a cooling end for reducing the temperature of the liquid in the liquid storage chamber 102. The bottom of the housing 1 is fixedly connected with an air intake pipe 301. The air intake pipe 301 is externally connected to an air collecting device, such as an air pump, an exhaust fan, etc. The air collecting device collects external air and discharges it into the housing 1 from the air intake pipe 301. The air intake pipe 301 runs through the pretreatment chamber 103. The temperature inside the pretreatment chamber 103 is increased by the influence of the semiconductor cooling plate 13, thereby causing the air in the air intake pipe 301 to The body temperature rises, and the temperature rise can increase the kinetic energy of the gas molecules, thereby increasing the interaction between the gas molecules and the ionic liquid, promoting the adsorption rate of carbon dioxide, and helping to improve the efficiency of the direct carbon capture technology from air. At the same time, the semiconductor refrigeration plate 13 reduces the temperature in the liquid storage chamber 102. The cooling changes the physical and chemical properties of the ionic liquid, reduces the competitive adsorption of other gases and carbon dioxide, and increases the selectivity of the ionic liquid for carbon dioxide. The lower temperature can also reduce the evaporation rate and decomposition rate of the ionic liquid, extend its service life, and improve the stability of the system. An outlet pipe 104 is fixedly connected to the top of the outer shell 1, and the outlet pipe 104 is connected to the adsorption chamber 101.

[0039] Reference Figures 3 to 6The inner part of the outer shell 1 is rotatably connected with a rotating shell 3, the rotating shell 3 is located above the pretreatment chamber 103 and at the bottom center of the adsorption chamber 101, the bottom of the rotating shell 3 is communicated with the air inlet pipe 301, and is rotatably connected with the air inlet pipe 301, the outer wall of the rotating shell 3 is fixedly installed with a first gear 302, the inner part of the outer shell 1 is fixedly installed with a first motor 303, the output end of the first motor 303 is fixedly installed with a second gear 304, the second gear 304 is meshed with the first gear 302, the first motor 303 is started, and the second gear 304 drives the first gear 302 to rotate, so that the rotating shell 3 rotates, the top of the rotating shell 3 is rotatably connected with an infusion tube 501, the infusion tube 501 is communicated with the inside of the rotating shell 3, one end of the infusion tube 501 located in the rotating shell 3 is fixedly connected with an atomizing nozzle 5, and the infusion tube The end of 501 away from the rotating shell 3 passes through the outer shell 1 and is fixedly connected to the outer shell 1. The infusion tube 501 is externally connected to a liquid pump, and the liquid pump is connected to the raw material storage tank. The liquid pump draws the surfactant into the infusion tube 501, and the atomizing nozzle 5 sprays the surfactant. The surfactant can reduce the interfacial tension between the ionic liquid and the carbon dioxide, making it easier for the ionic liquid to contact and adsorb carbon dioxide, which helps to increase the adsorption capacity of the ionic liquid for carbon dioxide and improve the efficiency of carbon capture. The atomized surfactant droplets are easier to diffuse in the gas, making it easier for gas molecules to meet and interact with the surfactant molecules. The adsorption efficiency between the target substance (carbon dioxide) in the gas and the surfactant will be improved, which helps the ionic liquid to capture the target substance faster after the gas enters the ionic liquid.

[0040] Reference Figure 4 , Figures 6 to 8The top of the inner wall of the rotating shell 3 is rotatably connected with a toothed disc 305, the inner wall of the rotating shell 3 is fixedly installed with a steering gear 6, the output end of the steering gear 6 is fixedly installed with an adjustment gear 601, the adjustment gear 601 is located below the toothed disc 305 and meshes with the toothed disc 305, the side wall of the rotating shell 3 is rotatably connected with four rotating tubes 4, the four rotating tubes 4 are located inside the adsorption chamber 101, the four rotating tubes 4 are distributed in a circumferential array on the side wall of the rotating shell 3, the rotating tube 4 is connected with the inside of the rotating shell 3, and the end of the rotating tube 4 close to the center of the rotating shell 3 is fixedly installed with a bevel gear 402, and the bevel gear 402 is located below the toothed disc 305 , and meshes with the toothed disc 305. After the steering gear 6 is started, the adjustment gear 601 drives the toothed disc 305 to rotate, so that the rotating tube 4 rotates under the action of the bevel gear 402 and the toothed disc 305. The side wall of the rotating tube 4 is horizontally fixedly connected with a row of one-way nozzles 401, and the end of the rotating tube 4 away from the rotating shell 3 is fixedly connected with a one-way nozzle 2 4011. The end of the rotating tube 4 away from the rotating shell 3 is fixedly connected with a guide head 403. The rotating tube 4 rotates, so that the angle of the gas ejected by the one-way nozzle 401 changes. By adjusting the injection angle, the gas is more effectively mixed with the ionic liquid, and the appropriate injection The angle can ensure that the gas is evenly distributed in the ionic liquid, avoiding the formation of gas bubbles or dead corners, thereby increasing the contact area and interaction opportunities between the gas and the ionic liquid, thereby improving the carbon capture efficiency. When the liquid flows and absorbs carbon dioxide in the gas, the angle between the flow direction of the liquid and the rising direction of the carbon dioxide will affect the absorption effect. The specific size of the angle depends on the flow rate of the liquid, the shape and size of the container, and the flow rate and concentration of the carbon dioxide gas. Ideally, the angle should be small enough so that the carbon dioxide gas can fully diffuse into the liquid, but it should not be too small to avoid the liquid flowing too fast and causing poor contact between the gas and the liquid. Usually, in order to promote full contact between the gas and the liquid, the angle should be controlled within a certain range, usually between 30 degrees and 60 degrees. Through the action of the guide head 403, the gas ejected from the one-way nozzle 4011 can be guided to flow around, achieving uniform distribution of the gas in the ionic liquid, increasing the contact area between the gas and the ionic liquid, helping to accelerate the mass transfer process of the target substance (carbon dioxide) in the gas to the ionic liquid, improving the efficiency and rate of carbon capture, and at the same time facilitating the removal of impurities adhering to the inner wall of the adsorption chamber 101, having a certain cleaning effect.

[0041] A scraper strip 404 is fixedly installed on the side wall of the rotating tube 4. The scraper strip 404 is used to scrape off solid compounds produced by the reaction of other impurity gases and ionic liquids in the impurity gas at the bottom of the inner wall of the adsorption chamber 101, or the reaction of carbon dioxide and ionic liquids under specific conditions. A slag collecting tank 9 is arranged inside the shell 1. The slag collecting tank 9 is located below the adsorption chamber 101 and is connected to the adsorption chamber 101. The scraper strip 404 scrapes impurities into the slag collecting tank 9. A liquid outlet pipe 10 is fixedly connected to the outer wall of the shell 1. The liquid outlet pipe 10 is connected to the slag collecting tank 9. A valve is arranged inside the liquid outlet pipe 10. When the ionic liquid in the adsorption chamber 101 is replaced, the valve is opened to discharge impurities and adsorption-saturated ionic liquid.

[0042] Reference Figure 3 , Fig. 9 and Fig.10 , an internal water pump 2 is fixedly installed inside the shell 1, and a liquid separator column 7 is rotatably connected inside the shell 1. The liquid separator column 7 is located above the rotating shell 3. A liquid extraction pipe is fixedly connected between the internal water pump 2 and the liquid storage chamber 102. A liquid inlet pipe 201 is connected to the top of the internal water pump 2 and the liquid separator column 7. The liquid inlet pipe 201 is rotatably connected to the liquid separator column 7. A third gear 701 is fixedly installed on the outer wall of the liquid separator column 7. A second motor 702 is fixedly installed inside the shell 1. A fourth gear 703 is fixedly connected to the output end of the second motor 702. The third gear 701 is meshed with the fourth gear 703. The second motor 702 rotates, and the third gear 701 and the fourth gear 703 work together to rotate the liquid separator column 7, and the rotation direction of the liquid separator column 7 is opposite to that of the rotating shell 3. A stirring frame 704 is fixedly installed at the bottom of the liquid separator column 7. The stirring frame 704 is located at Between the separator column 7 and the rotating shell 3, a liquid spraying frame 8 is fixedly connected to the side wall of the separator column 7, and the liquid spraying frame 8 is connected to the inside of the separator column 7. A nozzle for discharging liquid is provided at the bottom of the liquid spraying frame 8, and the nozzle is inclined toward the separator column 7. The separator column 7 and the liquid spraying frame 8 rotate together, and the ionic liquid enters the adsorption chamber 101 in a rotating spraying manner, which can form finer droplets, increase the contact area between the ionic liquid and the gas, ensure that the ionic liquid and the gas are fully mixed, and improve the mass transfer efficiency, thereby accelerating the carbon capture process. The gas moves upward from the bottom of the adsorption chamber 101, and the ionic liquid is sprayed downward from the top of the inner wall of the adsorption chamber 101. The gas and the ionic liquid form convection, which helps to lock the carbon dioxide in the gas in the ionic liquid, reduce the possibility of gas escape, ensure the efficiency of the carbon capture process, and prevent the waste of carbon dioxide.

[0043] When the ionic liquid in the adsorption chamber 101 is saturated with adsorption and the carbon dioxide content detected by the carbon dioxide sensor 12 increases, the internal water pump 2 and the liquid outlet pipe 10 work together to control the pumping efficiency of the internal water pump 2 and the discharge efficiency of the liquid outlet pipe 10 to be relatively consistent, thereby avoiding large fluctuations in the height of the ionic liquid in the adsorption chamber 101. During the process of replacing the ionic liquid in the adsorption chamber 101, the gas does not need to be stopped from being introduced, thereby improving the working efficiency of the entire equipment, ensuring the continuity and stability of the capture system, avoiding efficiency reduction and potential gas leakage risks caused by interruptions, and replacing the ionic liquid without stopping the machine reduces the operation time and maintenance cycle, thereby improving the overall efficiency of the system.

[0044] In the present invention, in the initial state, the adsorption chamber 101 is filled with a certain depth of ionic liquid. The ionic liquid can absorb the carbon dioxide gas inside the gas, and the adsorption process is physical adsorption, and it is difficult to produce a chemical reaction to produce solid precipitates. After the capture is completed, the adsorbent is restored to its original state by changing the heat, pressure or temperature, and can be used to capture carbon dioxide again, and the pure carbon dioxide is extracted and stored. The adsorbent has a regeneration characteristic and can be recycled. The liquid level sensor 11 can detect the liquid level height of the ionic liquid inside the adsorption chamber 101 to obtain the amount of liquid inside the adsorption chamber 101. The liquid storage chamber 102 is connected to an external pipeline and is filled with regenerated ionic liquid. The ionic liquid has good adsorption capacity. The side of the semiconductor refrigeration plate 13 facing the pretreatment chamber 103 is the heat dissipation end, and the side of the semiconductor refrigeration plate 13 facing the inside of the liquid storage chamber 102 is the cooling end. The one-way nozzle 401 is initially facing upward.

[0045] The device is placed in a suitable working position, and external air is directly collected by air collecting devices such as air pumps and exhaust fans. The collected gas enters the device from the air inlet pipe 301. When the gas passes through the pretreatment chamber 103, the semiconductor refrigeration plate 13 works to heat the pretreatment chamber 103, so that the gas can be preheated when passing through the pretreatment chamber 103. The movement of gas molecules becomes more active as the temperature rises, and the carbon dioxide gas molecules in the gas move more violently after entering the ionic solution, and have more opportunities to directly contact the ionic liquid.

[0046] When carbon capture begins, an external liquid pump extracts surfactant from the raw material storage tank and enters the atomizing nozzle 5 through the infusion tube 501. The surfactant can not only inhibit the gas in the air from being absorbed by the ionic liquid, but also improve the adsorption capacity of carbon dioxide, so that carbon dioxide can be adsorbed by the ionic liquid faster and more fully. The surfactant enters the atomizing nozzle 5. When the atomizing nozzle 5 is not working, the surfactant cannot pass through. When the atomizing nozzle 5 is working, the liquid surfactant can be refined into small mist droplets. After preheating, the gas enters the rotating shell 3, the rotating tube 4, the one-way nozzle 1 401 and the one-way nozzle 2 4011 in turn, and finally directly enters the ionic liquid from the bottom of the adsorption chamber 101. The gas enters the equipment to form an airflow. When the airflow passes through the rotating shell 3, it carries the mist surfactant and is ejected from the one-way nozzle 1 401 and the one-way nozzle 2 4011. In this process, the airflow carries the mist surfactant from the adsorption chamber 10 1 enters the ionic liquid at the bottom, the air flow passes through the ionic liquid and is discharged from the top outlet pipe 104, the carbon dioxide gas in the air flow is absorbed by the ionic liquid, the surfactant enters the ionic liquid with the air flow, exists in the bubbles or air flow vortex formed by the upward movement of the ionic liquid, directly acts on the part where the air flow contacts the ionic liquid, and efficiently promotes the ionic liquid to adsorb carbon dioxide gas. After the carbon dioxide in the gas is captured, the carbon dioxide content of the gas passing through the ionic liquid is extremely low. The carbon dioxide sensor 12 detects the carbon dioxide gas content above the ionic liquid surface in real time. During normal and efficient absorption, no or very little carbon dioxide content is detected. The four carbon dioxide sensors 12 can analyze the carbon dioxide content at each position, and the data is more accurate. When it is detected that the carbon dioxide content begins to increase, it means that the adsorption capacity of the ionic liquid decreases with the absorption of carbon dioxide. The gas inlet flow rate remains unchanged, and the adsorption capacity of the ionic liquid will gradually weaken if it continues to work.

[0047] When the gas is introduced, the first motor 303 works, so that the second gear 304 drives the first gear 302 and the rotating shell 3 to rotate, and the four array-distributed rotating tubes 4 and the one-way nozzle 1 401 rotate, blowing and rotating at the same time, so that the gas can be sprayed upward from different positions at the bottom of the adsorption chamber 101, and the gas can fully contact with the ionic liquid in different areas inside the adsorption chamber 101. The gas sprayed from the one-way nozzle 2 4011 at one end of the rotating tube 4 away from the rotating shell 3 will be guided by the guide head 403 to be blown out from different directions. Compared with the gas directly sprayed from the one-way nozzle 2 4011 at the port to hit the arc-shaped inner wall of the adsorption chamber 101, the gas has a more complex and dispersed path, on the one hand, it increases the contact between the carbon dioxide gas and the ionic liquid, and on the other hand, after the airflow is guided, the solid particles attached to the inner wall can be blown off, which is convenient for cleaning. The solid particles are produced by the reaction of other impurity gases in the gas with the ionic liquid. At the same time, since the cations or anions in the ionic liquid may react with carbon dioxide to form unstable intermediates, these intermediates may further react to generate new compounds, which may be solid particles.

[0048] When the carbon dioxide sensor 12 detects that the adsorption capacity of the ionic liquid to carbon dioxide gas is weakened, the steering gear 6 rotates the angle, the adjustment gear 601 rotates, and the gear plate 305 rotates. The gear plate 305 rotates, and the four bevel gears 402 meshing with it rotate, and the rotating tube 4 rotates. The position of the one-way nozzle 401 originally facing upward changes, and the incident angle of the gas entering the ionic liquid changes. The angle between the gas entry direction and the bottom of the adsorption chamber 101 is an acute angle. Compared with directly entering the ionic liquid vertically upward, the gas can have a longer contact time in the ionic liquid, and the smaller the angle, the longer the gas passes through the ionic liquid, and the ionic liquid with reduced adsorption capacity has a longer contact time with the gas. The carbon dioxide gas in the gas can be better adsorbed by the ionic liquid. While adjusting the angle, the second motor 702 rotates, causing the liquid separation column 7 and the stirring frame 704 to rotate. The rotation direction of the stirring frame 704 is opposite to that of the rotating shell 3. The ionic liquid is guided by the stirring frame 704 to flow, so that the ionic liquid contacts the gas more evenly. The angle between the flow direction of the ionic liquid and the gas entering the liquid is close to ninety degrees. It can be understood that the gas passes through the flowing liquid. Although the adsorption capacity of the ionic liquid is reduced, the gas maintains good contact with the ionic liquid, the speed of gas introduction does not change, and the time of the gas inside the ionic liquid is increased, maintaining a good adsorption speed and efficiency.

[0049] After adjusting the gas entry angle and the stirring frame 704 and working for a period of time, the adsorption capacity of the ionic liquid tends to be saturated, and the ionic liquid needs to be replaced and regenerated in time to recycle the ionic liquid. At this time, there is no need to stop the gas introduction, and the equipment continues to operate. The internal water pump 2 is started to extract the ionic liquid with strong adsorption capacity from the liquid storage chamber 102, and the ionic liquid passes through the liquid inlet pipe 201, the liquid separator column 7 and the liquid spraying frame 8, and is sprayed from the nozzle at the bottom of the liquid spraying frame 8. The nozzle is inclined at a certain angle toward the liquid separator column 7. The liquid separator column 7 is rotated before changing the liquid. Therefore, the liquid sprayed from the bottom of the liquid spraying frame 8 is like "heavy rain". The liquid completely covers the position above the ionic liquid in the adsorption chamber 101 like rainwater, and the gas that passes through the ionic liquid that is saturated with adsorption will directly pass through the area of ​​the spraying ionic liquid, and the carbon dioxide gas therein will be quickly absorbed by the ionic liquid with strong adsorption capacity.

[0050] When the ionic liquid exceeds the thermal stability temperature, the absorbed carbon dioxide may overflow. When adding liquid, the ionic liquid in the liquid storage chamber 102 will be cooled by the semiconductor refrigeration plate 13. Such ionic liquid is safer to store, and the temperature is low when it is sprayed from the bottom of the spray rack 8. The saturated ionic liquid will gradually increase in temperature due to the continuous introduction of preheated gas, but it is always lower than the thermal stability temperature, and the cooling effect on the passing gas is reduced. The gas with a certain amount of heat passes through the ionic liquid with a lower temperature. The dispersed ionic liquid sprayed by the spray rack 8 will not have its adsorption capacity reduced due to the high gas temperature. The temperature required for the dispersed ionic liquid to heat and overflow carbon dioxide will be lower. When adding liquid, the internal valve of the liquid outlet pipe 10 is opened to control the power of the internal water pump 2 so that the liquid level of the ionic liquid does not change greatly during the process of adding and discharging liquid. During the entire process of replacing the ionic liquid, the gas does not need to stop being introduced, and another set of equipment does not need to be invested. The adsorption rate and adsorption capacity of carbon dioxide in the gas always remain efficient. After the liquid is replaced, the adsorption capacity of the ionic liquid is strong. In order to save energy, the stirring rack 704 can be stopped from rotating, and the ionic liquid still has a sufficient carbon capture effect.

[0051] The liquid replacement time is fixed. During this period of time, the servo 6 is controlled to make the scraper strip 404 contact the bottom of the adsorption chamber 101. While discharging the ionic liquid, several scraper strips 404 collect the solid particles at the bottom of the adsorption chamber 101 into the slag collecting tank 9, and leave the adsorption chamber 101 together with the ionic liquid that needs to be replaced. The discharged adsorbed saturated ionic liquid is processed by external equipment and then reloaded into the liquid storage chamber 102 to facilitate the next replacement of the ionic liquid.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A direct air carbon capture device comprising a housing (1), characterized in that: Also includes: An adsorption chamber (101), the interior of the adsorption chamber (101) is filled with an ionic liquid, an air outlet pipe (104) is fixedly connected to the top of the housing (1), the air outlet pipe (104) is in communication with the adsorption chamber (101), a liquid storage chamber (102) is provided inside the housing (1), the liquid storage chamber (102) is located below the adsorption chamber (101), a conveying mechanism is connected between the liquid storage chamber (102) and the adsorption chamber (101), and an outer wall of the housing (1) is fixedly connected to a liquid outlet pipe (10), the liquid outlet pipe (10) is in communication with the adsorption chamber (101); A rotating shell (3), the rotating shell (3) being rotatably connected to the interior of the outer shell (1) and being located at the bottom center of the adsorption chamber (101); an air inlet pipe (301) being rotatably connected to the bottom of the rotating shell (3); the air inlet pipe (301) being communicated with the interior of the rotating shell (3); the air inlet pipe (301) penetrating downwardly through the outer shell (1); a liquid infusion pipe (501) being rotatably connected to the top of the rotating shell (3); an end of the liquid infusion pipe (501) close to the rotating shell (3) being fixedly connected to an atomizing nozzle (5); the atomizing nozzle (5) being located inside the rotating shell (3); and an end of the liquid infusion pipe (501) away from the rotating shell (3) penetrating through the outer shell (1) and being fixedly connected to the outer shell (1); A driving mechanism, the driving mechanism being located inside the outer shell (1), and being used to drive the rotating shell (3) to rotate; A rotating tube (4), wherein there are four rotating tubes (4), the four rotating tubes (4) are distributed in a circular array on the outer wall of the rotating shell (3) and are located in the adsorption chamber (101), the rotating tube (4) is rotatably connected to the rotating shell (3), the rotating shell (3) is communicated with the interior of the rotating tube (4), and the outer wall of the rotating tube (4) is transversely fixedly connected to a row of one-way nozzles (401); A liquid level sensor (11), the liquid level sensor (11) being fixedly mounted on the inner wall of the adsorption chamber (101), the liquid level sensor (11) being used to monitor the height of the ionic liquid; The conveying mechanism comprises an internal water pump (2) fixedly mounted inside the housing (1), a liquid extraction pipe fixedly connected between the internal water pump (2) and the liquid storage chamber (102), a liquid inlet pipe (201) fixedly connected to the side wall of the internal water pump (2), and the liquid inlet pipe (201) is used to discharge ionic liquid into the adsorption chamber (101); The outer shell (1) is rotatably connected to a liquid separation column (7), the liquid separation column (7) is located above the rotating shell (3), one end of the liquid inlet pipe (201) away from the internal water pump (2) is rotatably connected to the top of the liquid separation column (7) and is in communication with the interior of the liquid separation column (7), the outer wall of the liquid separation column (7) is fixedly connected to a liquid spraying frame (8), and a spray head is provided at the bottom of the liquid spraying frame (8); The driving mechanism comprises a first motor (303) fixedly mounted inside the housing (1); an output end of the first motor (303) is fixedly connected to a second gear (304); a first gear (302) is fixedly mounted on an outer wall of the rotating housing (3); and the second gear (304) meshes with the first gear (302); One end of the rotating tube (4) away from the rotating shell (3) is fixedly connected to a second one-way nozzle (4011), and one end of the rotating tube (4) away from the rotating shell (3) is fixedly connected to a guide head (403), the second one-way nozzle (4011) is located at the center of the guide head (403), and the guide head (403) is used to change the direction of the airflow sprayed by the second one-way nozzle (4011); The invention also comprises an adjustment mechanism, the adjustment mechanism being used to change the spraying angle of the one-way nozzle 1 (401), the adjustment mechanism comprising a steering gear (6) fixedly mounted on the inner wall of the rotating shell (3), the output end of the steering gear (6) being fixedly connected to an adjustment gear (601), a toothed disc (305) being rotatably connected to the top of the inner wall of the rotating shell (3), the toothed disc (305) being located above the adjustment gear (601) and meshing with the adjustment gear (601), and a bevel gear (402) being fixedly mounted on one end of the rotating tube (4) close to the center of the rotating shell (3), the bevel gear (402) being located below the toothed disc (305) and meshing with the toothed disc (305); A scraper strip (404) is fixedly mounted on the side wall of the rotating tube (4); a slag collecting trough (9) is provided inside the housing (1); the scraper strip (404) is used to scrape debris at the bottom of the inner wall of the adsorption chamber (101) into the slag collecting trough (9); the slag collecting trough (9) is located below the adsorption chamber (101) and is in communication with the adsorption chamber (101); the slag collecting trough (9) is located above the liquid outlet pipe (10) and is in communication with the liquid outlet pipe (10); a valve is provided inside the liquid outlet pipe (10).

2. The air direct carbon capture equipment according to claim 1, characterized in that: A second motor (702) is fixedly mounted inside the housing (1); an output end of the second motor (702) is fixedly connected to a fourth gear (703); a third gear (701) is fixedly mounted on an outer wall of the liquid separation column (7); the third gear (701) is meshed with the fourth gear (703); a stirring frame (704) is fixedly connected to the bottom of the liquid separation column (7); and the stirring frame (704) is located between the liquid separation column (7) and the rotating housing (3).

3. The air direct carbon capture equipment according to claim 1, characterized in that: Four carbon dioxide sensors (12) are fixedly mounted on the inner wall of the adsorption chamber (101); the four carbon dioxide sensors (12) are distributed in a circular array on the inner wall of the adsorption chamber (101) and are located above the liquid level sensor (11).

4. The air direct carbon capture equipment according to claim 1, characterized in that: A pretreatment chamber (103) is provided inside the housing (1), the pretreatment chamber (103) is located below the adsorption chamber (101), the liquid storage chamber (102) is annular, the pretreatment chamber (103) is located at the center of the liquid storage chamber (102), the air inlet pipe (301) passes through the pretreatment chamber (103) downward, a semiconductor cooling sheet (13) is fixedly installed inside the housing (1), the semiconductor cooling sheet (13) is located between the liquid storage chamber (102) and the pretreatment chamber (103), and the heating end of the semiconductor cooling sheet (13) faces the pretreatment chamber (103).

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