A carbon dioxide capture and recovery system

Abstract

The present application discloses a carbon dioxide capture and recovery system, belonging to the technical field of carbon dioxide capture and recovery. The key points of its technical solution include a cooling mechanism, which includes a first tank, an intake pipe, a first ventilation pipe, and a blower. The intake pipe and the first ventilation pipe are both connected to the first tank. The outlet end of the blower is connected to the first tank and is arranged between the intake pipe and the first ventilation pipe for delivering air into the first tank. The dust removal mechanism includes a second tank, a second ventilation pipe, and a dust removal device. The second tank is connected to the first ventilation pipe, the second ventilation pipe is connected to the second tank, and the dust removal device is connected to the second tank and is arranged between the first ventilation pipe and the second ventilation pipe. The capture mechanism includes a third tank and an outlet pipe. The third tank is connected to the second ventilation pipe. A solvent for capturing carbon dioxide is arranged in the third tank. One end of the outlet pipe is connected to the second tank, and the other end is connected to a collection tank, achieving the effect of efficiently capturing carbon dioxide.

Description

Technical Field

[0001] This application relates to the technical field of carbon dioxide capture and recovery, and particularly to a carbon dioxide capture and recovery system. Background Art

[0002] In the process of globalization, environmental issues have received increasing attention, especially climate change. As a major greenhouse gas, carbon dioxide accumulates continuously in the natural environment, leading to a gradual increase in global temperatures and having a profound impact on the ecosystem and human society. To address this challenge, measures need to be taken to reduce carbon emissions. On the one hand, carbon emissions should be reduced at the sources such as industry, transportation, and construction; on the other hand, it is impossible to completely eliminate carbon emissions generated in manufacturing and daily life. Relevant technologies need to be adopted to absorb, fix, and utilize the emitted carbon dioxide and other greenhouse gases, separate the released carbon dioxide and other greenhouse gases from the emission sources such as industrial exhaust gas, and conduct long-term storage or reuse.

[0003] Currently, coal-fired boilers mainly burn coal as raw material and are widely used in industries such as power, machinery, chemical industry, medical treatment, food processing, and paper making. The flue gas emitted by the boilers contains a large amount of acidic gas carbon dioxide. The presence of carbon dioxide gas will not only cause environmental pollution problems, but also corrode the conveying pipelines and increase industrial production costs. It is necessary to capture the carbon dioxide in the tail gas. Therefore, there is an urgent need to develop a carbon dioxide capture and recovery system with high efficiency. Summary of the Invention

[0004] In order to efficiently capture carbon dioxide, the present invention provides a carbon dioxide capture and recovery system.

[0005] The carbon dioxide capture and recovery system provided by the present invention adopts the following technical solutions:

[0006] A carbon dioxide capture and recovery system, comprising a cooling mechanism, which includes a first tank body, an intake pipe, a first ventilation pipe and a blower. The intake pipe and the first ventilation pipe are respectively arranged on both sides of the first tank body and are both communicated with the first tank body. The outlet end of the blower is communicated with the first tank body and is arranged between the intake pipe and the first ventilation pipe for delivering air into the first tank body; a dust removal mechanism, including a second tank body, a second ventilation pipe and a dust removal device. The second tank body is communicated with the first ventilation pipe, the second ventilation pipe is communicated with the second tank body, and the dust removal device is connected to the second tank body and is arranged between the first ventilation pipe and the second ventilation pipe for removing dust from the gas passing through the second tank body; and a capture mechanism, including a third tank body and an outlet pipe. The third tank body is communicated with the second ventilation pipe, a solvent for capturing carbon dioxide is contained in the third tank body, one end of the outlet pipe is communicated with the second tank body, and the other end is communicated with a collection tank for temporarily storing gases other than carbon dioxide; wherein, a plurality of switch doors for taking and placing the dust removal device are arranged on the side wall of the second tank body, a plurality of groups of the dust removal devices are provided and are arranged at intervals in sequence along the conveying direction of the gas in the second tank body, each dust removal device is correspondingly provided with a switch door, the second tank body is connected with an isolation device, the isolation device is arranged on both sides of the switch door for isolating the switch door from the internal space of the second tank body, the second tank body is connected with a plurality of auxiliary ventilation pipes, each switch door is correspondingly provided with an auxiliary ventilation pipe, both ends of the auxiliary ventilation pipe are communicated with the internal of the second tank body, and both ports of the auxiliary ventilation pipe are respectively arranged on both sides of the isolation device. A blocking plate for blocking itself is arranged inside the auxiliary ventilation pipe, and the blocking plate is connected with a driving device, and the driving device can drive the blocking plate to open or close the auxiliary ventilation pipe.

[0007] By adopting the above technical solution, during use, first, the gas entering the system is pretreated by the cooling mechanism to reduce the gas temperature and thus reduce the energy consumption in subsequent treatment steps. Specifically, the gas enters the first tank from the inlet pipe, and the blower sends the outside cold air into the first tank to promote the cooling of the gas, which helps to increase the solubility of carbon dioxide in the subsequent capture process, thereby improving the capture efficiency. Subsequently, the cooled gas enters the second tank in the dust removal mechanism through the first ventilation pipe, and the dust and other impurities in the gas are removed by the dust removal device to ensure the effectiveness of the subsequent capture operation. Finally, the purified gas enters the third tank in the capture mechanism, where the solvent reacts chemically with carbon dioxide to achieve the efficient capture of carbon dioxide. Moreover, the carbon dioxide captured in the third tank can be reduced again to obtain carbon dioxide gas. The other gases that are not captured are discharged through the outlet pipe and temporarily stored in the collection tank for further treatment. The whole process has a high degree of automation, can effectively improve the capture efficiency and purity of carbon dioxide, and at the same time reduces the operating cost.

[0008] At least one of the multiple dust removal devices works. When a group of dust removal devices is in a maintenance or replacement state, other groups can work normally to ensure that the system continuously and efficiently removes the dust particles in the gas. The design of the opening and closing door and the isolation device makes it more convenient to replace the filter cloth, and the replacement operation of the dust removal device can be completed without shutting down the machine, improving the maintenance efficiency and reliability of the system. The setting of the auxiliary ventilation pipe enables each group of dust removal groups to work independently. When it is necessary to replace or maintain a certain group of dust removal groups, the corresponding auxiliary ventilation pipe can be opened, allowing other parts to continue to operate normally, improving the stability and operability of the system. The design of the plugging plate and its driving device ensures that the auxiliary ventilation pipe remains closed under non-necessary circumstances, avoiding the bypass emission of untreated gas and ensuring the efficient operation and environmental protection performance of the system. When used in conjunction with the air pressure sensor and the control module, the opening or closing of the auxiliary ventilation pipe can be automatically adjusted according to the actual working conditions, thereby optimizing the energy consumption and material utilization efficiency of the entire process.

[0009] Preferably, the isolation device includes a first placement box, a first cylinder, a first partition plate, a second placement box, a second cylinder, and a second partition plate. The first placement box and the second placement box are both connected to the second tank. The inside of the first placement box and the inside of the second placement box are both in communication with the inside of the second tank. The first cylinder is connected to the first placement box, and the driving shaft of the first cylinder passes through the first placement box and is connected to the first partition plate. The second cylinder is connected to the second placement box, and the driving shaft of the second cylinder passes through the second placement box and is connected to the second partition plate. The first partition plate and the second partition plate are respectively located on both sides of the dust removal device, and both the first partition plate and the second partition plate can extend into the second tank to isolate the space between the first partition plate and the second partition plate.

[0010] By adopting the above technical solution, the carbon dioxide capture and recovery system can effectively isolate different regions during the dust removal process. Specifically, when it is necessary to replace the dust removal device, the first partition and the second partition can be respectively driven by the first cylinder and the second cylinder to extend into the second tank body, isolating the area where the dust removal device to be replaced is located from other areas, reducing the possibility of unfiltered gas entering the filtered area, thereby improving the dust removal efficiency and quality. At the same time, this design enables the replacement or maintenance of the dust removal device without affecting the operation of other parts, improving the maintenance convenience and operation stability of the system.

[0011] Preferably, the second tank body is connected with a box body, and the driving device is arranged in the box body and includes a driving block, a plurality of springs, a slider, a lead screw, a first bevel gear, a second bevel gear and a shaft rod. The top end of the driving block passes through the second tank body and extends into the interior of the second tank body. The driving block is arranged below the second partition, and the driving block is slidably connected with the second tank body. One end of the spring is connected with the driving block, and the other end is connected with the box body; the slider is connected with the driving block and is slidably connected with the box body. The lead screw passes through the slider and is threadedly connected with the slider. The lead screw is rotatably connected with the box body. The first bevel gear is fixedly connected with the lead screw. The second bevel gear is connected with the shaft rod and meshes with the first bevel gear. The shaft rod passes through the box body and the auxiliary ventilation pipe, and the shaft rod is rotatably connected with the box body. The shaft rod is fixedly connected with the plugging plate and can drive the plugging plate to rotate in the auxiliary ventilation pipe.

[0012] By adopting the above technical solution, the second tank body of the carbon dioxide capture and recovery system is connected with a box body, and the driving device arranged in the box body can achieve precise control of the plugging plate. When it is necessary to open or close the auxiliary ventilation pipe, the driving block moves towards the interior of the box body under the action of the second partition, driving the slider to move along the lead screw, so that the shaft rod rotates through the transmission of the first bevel gear and the second bevel gear. When the second partition retracts into the second placement box, the spring resets the driving block and the slider, further resetting the lead screw, the first bevel gear, the second bevel gear and the shaft rod, thereby realizing the control of the position change of the plugging plate. This design not only improves the automation degree of the system, but also ensures the stability and safety of the gas flow during the dust removal process, avoiding errors and inconveniences caused by manual operation.

[0013] Preferably, the dust removal device includes a fixed frame and a filter cloth. The fixed frame is connected with the inner wall of the second tank body. The filter cloth is connected with the inner wall of the fixed frame and covers the hollow part of the fixed frame. The dust removal device can isolate the first ventilation pipe and the second ventilation pipe.

[0014] By adopting the above technical solutions, the dust removal device can effectively remove dust particles in the gas, improving the efficiency and purity of the subsequent carbon dioxide capture process. The design of the fixed frame ensures the position stability and structural strength of the filter cloth, while facilitating replacement and maintenance. The filter cloth covers the hollow part of the fixed frame, forming an effective filter layer that can efficiently intercept dust and other impurities in the gas, ensuring the cleanliness of the gas entering the third tank.

[0015] Preferably, a limiting groove is formed on the inner wall of the second tank, and the fixed frame is arranged in the limiting groove and clamped with the second tank.

[0016] By adopting the above technical solutions, the limiting groove facilitates the installation and positioning of the fixed frame.

[0017] Preferably, the first tank is connected with a temperature detector for detecting the internal temperature. The temperature detector is electrically connected with a control module. The cooling mechanism further includes a circulation pipe and a one-way valve. The first end of the circulation pipe communicates with the first tank, and the second end communicates with the air inlet pipe. The one-way valve is connected to the inner wall of the circulation pipe. The first end of the circulation pipe and the first air pipe are both connected with a first solenoid valve, and the first solenoid valve is electrically connected with the control module.

[0018] By adopting the above technical solutions, the temperature detector can monitor in real time and feedback to the control module. The control module automatically adjusts to open the first solenoid valve in the circulation pipe or open the first solenoid valve in the first air pipe according to the temperature change. When the temperature exceeds the preset value, the first solenoid valve in the circulation pipe is opened and the first solenoid valve in the first air pipe is closed, so that the air in the circulation pipe circulates, achieving a cooling effect. At the same time, the one-way valve reduces the possibility of unprocessed gas in the air inlet pipe entering the circulation pipe, ensuring the stability and safety of the system. When the temperature is less than or equal to the preset value, the first solenoid valve in the first air pipe is opened, and the first solenoid valve in the circulation pipe is closed, and the gas is transported to the next step. This design effectively improves the working efficiency and reliability of the system.

[0019] Preferably, flow meters are connected to both the air inlet pipe and the outlet end of the blower, and the flow meters are electrically connected with the control module.

[0020] By adopting the above technical solutions, the gas flow rate entering the system can be accurately monitored and controlled, thus ensuring the stability and efficiency of the system operation. At the same time, through the real-time monitoring of the flow rates at the air inlet pipe and the outlet end of the blower, the parameters can be adjusted in time when the system is abnormal, avoiding the decline of the capture effect caused by flow rate fluctuations, and improving the reliability and safety of the entire system.

[0021] Preferably, a pressure sensor is connected to the inner wall of the second tank near one end of the first air pipe, and the pressure sensor is electrically connected with the control module.

[0022] By adopting the above technical solution, when the filtering effect of the filter cloth is not good, the pressure change detected by the air pressure sensor can be used to judge whether the filter cloth is blocked. If the pressure value exceeds the preset threshold, it indicates that the filter cloth is blocked. At this time, the control module will send a signal to prompt the operator to replace the filter cloth in time.

[0023] Preferably, a plurality of the third tanks are provided. The third tanks are communicated with branch pipes, the branch pipes are communicated with the second ventilation pipes, the branch pipes are connected with second electromagnetic valves, and the second electromagnetic valves are electrically connected with the control module.

[0024] By adopting the above technical solution, when one of the third tanks is full of carbon dioxide or fails, the control module can automatically switch to other available third tanks to continue the carbon dioxide capture work, ensuring the continuous operation and high efficiency of the system. At the same time, the setting of the second electromagnetic valve enables the on-off of each branch pipe to be controlled separately, further improving the flexibility and reliability of the system.

[0025] In summary, the present invention has the following beneficial effects:

[0026] During use, first, the gas entering the system is pretreated by the cooling mechanism to reduce the gas temperature and reduce the energy consumption in subsequent treatment steps. Specifically, the gas enters the first tank from the intake pipe, and the blower sends the outside cold air into the first tank to promote the gas cooling, which helps to increase the solubility of carbon dioxide in the subsequent capture process, thereby improving the capture efficiency. Subsequently, the cooled gas enters the second tank in the dust removal mechanism through the first ventilation pipe, and the dust and other impurities in the gas are removed by the dust removal device to ensure the effectiveness of the subsequent capture operation. Finally, the purified gas enters the third tank in the capture mechanism, where the solvent reacts chemically with carbon dioxide to achieve efficient capture of carbon dioxide. And the carbon dioxide captured in the third tank can be reduced again to obtain carbon dioxide gas. The other gases not captured are discharged through the outlet pipe and temporarily stored in the collection tank for further treatment or emission. The whole process has a high degree of automation, can effectively improve the carbon dioxide capture efficiency and purity, and at the same time reduces the operating cost. Description of the Drawings

[0027] Figure 1 is an overall structural schematic diagram of a carbon dioxide capture and recovery system.

[0028] Figure 2 is a structural schematic diagram of the cooling mechanism.

[0029] Figure 3 is a structural schematic diagram of the dust removal mechanism.

[0030] Figure 4It is a side view of the dust removal mechanism.

[0031] Figure 5 It is Figure 4 a schematic sectional view along the A-A direction.

[0032] Figure 6 It is Figure 5 an enlarged schematic view of part B in it.

[0033] Explanation of reference numerals:

[0034] 1. Cooling mechanism; 11. First tank body; 12. Intake pipe; 13. First ventilation pipe; 14. Blower; 15. Circulation pipe; 16. Check valve; 17. First solenoid valve; 18. Flowmeter; 2. Dust removal mechanism; 21. Second tank body; 211. Limit groove; 212. Switch door; 213. Box body; 22. Second ventilation pipe; 23. Dust removal device; 231. Fixed frame; 232. Filter cloth; 24. Isolation device; 241. First placement box; 242. First cylinder; 243. First partition board; 244. Second placement box; 245. Second cylinder; 246. Second partition board; 25. Auxiliary ventilation pipe; 251. Plugging board; 26. Driving device; 261. Driving block; 262. Spring; 263. Slide block; 264. Lead screw; 265. First bevel gear; 266. Second bevel gear; 267. Shaft rod; 3. Trapping mechanism; 31. Third tank body; 32. Branch pipe; 33. Second solenoid valve; 34. Outlet pipe; 4. Collection tank. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solutions in this specification, the following will clearly and completely describe the technical solutions in the embodiments of this specification in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments.

[0036] In the description of the embodiments of this application, words such as "for example" or "for illustration" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "for example" or "for illustration" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "for example" or "for illustration" is intended to present relevant concepts in a specific manner.

[0037] In the description of the embodiments of the present application, the term "a plurality of" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0038] A carbon dioxide capture and recovery system, referring to Figure 1 and Figure 2 , includes a cooling mechanism 1, a dust removal mechanism 2, a capture mechanism 3 and a collection tank 4. The cooling mechanism 1 includes a first tank body 11, an intake pipe 12, a first ventilation pipe 13 and a blower 14. The intake pipe 12 and the first ventilation pipe 13 are respectively arranged on both sides of the first tank body 11 and are both communicated with the first tank body 11. The outlet end of the blower 14 is communicated with the first tank body 11 and is arranged between the intake pipe 12 and the first ventilation pipe 13 for delivering air into the first tank body 11.

[0039] Referring to Figure 3 , Figure 4 and Figure 5 , the dust removal mechanism 2 includes a second tank body 21, a second ventilation pipe 22 and a dust removal device 23. The first ventilation pipe 13 and the second ventilation pipe 22 are both communicated with the second tank body 21. The dust removal device 23 is connected to the second tank body 21 and is arranged between the first ventilation pipe 13 and the second ventilation pipe 22 for removing dust from the gas passing through the second tank body 21.

[0040] Referring to Figure 1 , the capture mechanism 3 includes a third tank body 31 and an outlet pipe 34. The third tank body 31 is communicated with the second ventilation pipe 22. A solvent for capturing carbon dioxide is provided in the third tank body 31. One end of the outlet pipe 34 is communicated with the second tank body 21 and the other end is communicated with the collection tank 4. The collection tank 4 is used for temporarily storing gases other than carbon dioxide. The solvent for capturing carbon dioxide adopts amine solvents such as monoethanolamine (MEA).

[0041] The whole system cools the high-temperature gas in advance through the cooling mechanism 1, then removes the dust particles in the gas through the dust removal mechanism 2, and finally separates and captures carbon dioxide from the gas through the capture mechanism 3. And the carbon dioxide captured by the capture mechanism 3 can be restored again to obtain carbon dioxide gas. The other gases that are not captured are discharged through the outlet pipe 34 and temporarily stored in the collection tank 4 for further treatment. The whole process has a high degree of automation, can effectively improve the carbon dioxide capture efficiency and purity, and at the same time reduces the operation cost.

[0042] Refer to Figure 2 , a temperature detector is fixedly connected to the inner wall of the first tank body 11 near the first ventilation pipe 13 for detecting the internal temperature. The temperature detector is electrically connected to a control module.

[0043] Refer to Figure 2 , flow meters 18 are arranged inside the inlet pipe 12 and the outlet end of the blower 14, and the flow meters 18 are electrically connected to the control module.

[0044] It is possible to accurately monitor and control the gas flow entering the system, thereby ensuring the stability and efficiency of the system operation. At the same time, by real-time monitoring of the flow rates at the outlet ends of the inlet pipe 12 and the blower 14, parameters can be adjusted in a timely manner when the system is abnormal, avoiding a decrease in the capture effect caused by flow rate fluctuations, and improving the reliability and safety of the entire system.

[0045] Refer to Figure 2 , the cooling mechanism 1 further includes a circulation pipe 15 and a one-way valve 16. The circulation pipe 15 is fixedly connected to the first tank body 11. The first end of the circulation pipe 15 communicates with the first tank body 11, and the second end communicates with the inlet pipe 12. First solenoid valves 17 are fixedly connected to the first end of the circulation pipe 15 and the first ventilation pipe 13 respectively. Both of the two first solenoid valves 17 are electrically connected to the control module, and the control module can select any one of the first solenoid valves 17 to open.

[0046] When the temperature exceeds the preset value, the first solenoid valve 17 in the circulation pipe 15 is opened while the first solenoid valve 17 in the first ventilation pipe 13 is closed, so that the air in the circulation pipe 15 circulates to achieve a cooling effect; when the temperature is less than or equal to the preset value, the first solenoid valve 17 in the first ventilation pipe 13 is opened, and at the same time the first solenoid valve 17 in the circulation pipe 15 is closed, and the gas is transported to the next step. This design effectively improves the working efficiency and reliability of the system.

[0047] Refer to Figure 2 , the one-way valve 16 is fixedly connected to the second end of the circulation pipe 15 for reducing the possibility of unprocessed gas in the inlet pipe 12 entering the circulation pipe 15, and ensuring the stability and safety of the system.

[0048] Refer to Figure 5 , the dust removal device 23 includes a fixed frame 231 and a filter cloth 232. The fixed frame 231 is a square frame, and the filter cloth 232 covers the hollow part of the fixed frame 231 and is fixedly connected to the inner wall of the fixed frame 231. The dust removal device 23 isolates the first ventilation pipe 13 and the second ventilation pipe 22.

[0049] This dust removal device 23 can effectively remove dust particles in the gas, and improve the efficiency and purity of the subsequent carbon dioxide capture process.

[0050] Refer to Figure 5, an air pressure sensor is connected to the inner wall of one end of the second tank body 21 close to the first ventilation pipe 13, which is used to detect the pressure change inside the second tank body 21, and the air pressure sensor is electrically connected to the control module.

[0051] Refer to Figure 5 and Figure 6 , a limiting groove 211 is formed in the inner wall of the second tank body 21, and the limiting groove 211 surrounds the inner wall of the second tank body 21 in the circumferential direction. The fixing frame 231 is arranged in the limiting groove 211 and is clamped with the second tank body 21 for limiting the fixing frame 231.

[0052] Refer to Figure 3 and Figure 5 , a through hole is formed in the top surface of the second tank body 21, and the through hole is communicated with the limiting groove 211, and the fixing frame 231 can pass through the through hole. A switch door 212 is arranged in the through hole, and the switch door 212 is clamped with the second tank body 21 to block the through hole.

[0053] When the filtering effect of the filter cloth 232 is not good, it can be judged whether the filter cloth 232 is blocked by the pressure change detected by the air pressure sensor. If the pressure value exceeds the preset threshold, it means that the filter cloth 232 is blocked. At this time, the control module will send a signal to prompt the operator to replace the filter cloth 232 in time. The operator opens the switch door 212, takes out the blocked dust removal device 23 and replaces it with a new one.

[0054] Refer to Figure 5 , the second tank body 21 is connected with an isolation device 24, and the isolation device 24 includes a first placement box 241, a first cylinder 242, a first partition 243, a second placement box 244, a second cylinder 245 and a second partition 246. The first placement box 241 and the second placement box 244 are both arranged on one side of the second tank body 21, and the interiors of both are communicated with the interior of the second tank body 21. The first placement box 241 and the second placement box 244 are respectively arranged on both sides of the fixing frame 231 along the gas transmission direction.

[0055] Refer to Figure 5 , the first cylinder 242 is fixedly connected with the first placement box 241, and its driving shaft passes through the first placement box 241 and is fixedly connected with the first partition 243. The first partition 243 can extend into the second tank body 21.

[0056] The second cylinder 245 is fixedly connected with the second placement box 244, and its driving shaft passes through the second placement box 244 and is fixedly connected with the second partition 246. The second partition 246 can extend into the second tank body 21.

[0057] Refer to Figure 5When the first partition plate 243 and the second partition plate 246 both extend into the second tank body 21, the first partition plate 243 and the second partition plate 246 are respectively located on both sides of the fixed frame 231, and the first partition plate 243 and the second partition plate 246 can isolate the space between the two.

[0058] When the dust removal device 23 needs to be replaced, the first partition plate 243 and the second partition plate 246 can be respectively driven by the first cylinder 242 and the second cylinder 245 to extend into the second tank body 21, isolating the area where the dust removal device 23 to be replaced is located from other areas, reducing the possibility of unfiltered gas entering the filtered area, thereby improving the dust removal efficiency and quality. At the same time, this design enables the replacement or maintenance of the dust removal device 23 without affecting the operation of other parts, improving the maintenance convenience and operation stability of the system.

[0059] Refer to Figure 5 and Figure 6 The dust removal device 23, the switch door 212, the limit groove 211, and the isolation device 24 form a dust removal group, and multiple dust removal groups are provided. In this embodiment, two dust removal groups are arranged at intervals along the gas transmission direction.

[0060] The two dust removal groups can work alternately or simultaneously. When one dust removal device 23 is in a maintenance or replacement state, other groups can still operate normally, ensuring that the system continuously and efficiently removes dust particles in the gas.

[0061] Refer to Figure 5 The first tank body 11 is fixedly connected with auxiliary ventilation pipes 25. There are multiple auxiliary ventilation pipes 25, and each dust removal group is correspondingly provided with an auxiliary ventilation pipe 25. The auxiliary ventilation pipe 25 is located on the side of the second tank body 21 away from the first cylinder 242. In this embodiment, two auxiliary ventilation pipes 25 are provided and correspond to the two dust removal groups one by one.

[0062] Refer to Figure 5 Both ends of the auxiliary ventilation pipe 25 are communicated with the inside of the second tank body 21. The first end of the auxiliary ventilation pipe 25 is arranged on the side of the corresponding first partition plate 243 away from the second partition plate 246, and the second end of the auxiliary ventilation pipe 25 is arranged on the side of the corresponding second partition plate 246 away from the first partition plate 243.

[0063] Refer to Figure 6 A blocking plate 251 is arranged inside the auxiliary ventilation pipe 25. The blocking plate 251 is rotatably connected with the auxiliary ventilation pipe 25 through a rotating shaft, and the auxiliary ventilation pipe 25 can be blocked when the blocking plate 251 is in a horizontal state. The second tank body 21 is connected with a driving device 26 for driving the blocking plate 251 to open or close the auxiliary ventilation pipe 25.

[0064] The setting of the auxiliary vent pipe 25 enables each dust removal group to work independently. When it is necessary to replace or maintain a certain dust removal group, the corresponding auxiliary vent pipe 25 can be opened to enable other parts to continue to operate normally, improving the stability and operability of the system.

[0065] Referring to Figure 5 and Figure 6 Figure, the second tank body 21 is fixedly connected with a box body 213. There are two box bodies 213, and the two box bodies 213 correspond to the two auxiliary vent pipes 25 one by one. The driving device 26 is arranged in the corresponding box body 213.

[0066] Referring to Figure 6 Figure, the driving block 261 is in the shape of a cuboid. One end of it passes through the second tank body 21 and extends into the second tank body 21, and protrudes from the inner wall of the second tank body 21. The driving block 261 is arranged corresponding to the first partition plate 243. The driving block 261 is slidably connected with the second tank body 21. A plurality of springs 262 are provided. One end of the spring 262 is fixedly connected with the driving block 261, and the other end is fixedly connected with the box body 213.

[0067] Referring to Figure 6 Figure, the slider 263 is fixedly connected with the side wall of the driving block 261 and is slidably connected with the box body 213. The lead screw 264 passes through the slider 263 and is threadedly connected with the slider 263. The lead screw 264 is rotatably connected with the box body 213. The first bevel gear 265 is sleeved on the lead screw 264 and is fixedly connected with the lead screw 264. The second bevel gear 266 is fixedly connected with the shaft rod 267 and meshes with the first bevel gear 265. The shaft rod 267 is rotatably connected with the box body 213. One end of the shaft rod 267 away from the second bevel gear 266 passes through the box body 213 and extends into the auxiliary vent pipe 25. The shaft rod 267 is fixedly connected with the blocking plate 251 for driving the blocking plate 251 to rotate in the auxiliary vent pipe 25.

[0068] When it is necessary to open or close the auxiliary vent pipe 25, the driving block 261 moves towards the inside of the box body 213 under the action of the first partition plate 243, driving the slider 263 to move along the lead screw 264, so as to rotate the shaft rod 267 through the transmission of the first bevel gear 265 and the second bevel gear 266. When the first partition plate 243 retracts into the first placement box 241, the spring 262 resets the driving block 261 and the slider 263, further resetting the lead screw 264, the first bevel gear 265, the second bevel gear 266 and the shaft rod 267, thereby realizing the control of the position change of the blocking plate 251.

[0069] Referring to Figure 1 Figure, a plurality of third tank bodies 31 are provided. Each third tank body 31 is communicated with a branch pipe 32, and the branch pipe 32 is communicated with the second vent pipe 22. The branch pipe 32 is fixedly connected with a second electromagnetic valve 33, and the second electromagnetic valve 33 is electrically connected with the control module.

[0070] When one of the third tanks 31 is filled with carbon dioxide or fails, it can be automatically switched to other available third tanks 31 through the control module to continue the carbon dioxide capture work, ensuring the continuous operation and high efficiency of the system.

[0071] Refer to Figure 1 , the outlet pipe 34 includes a branch part and a converging part. There are multiple branch parts and they are all connected to the membership part. The third tank 31 is connected to the branch part, and the converging part is connected to the collection tank 4.

[0072] The working principle of this application is as follows: During use, the gas is sent into the first tank 11 from the inlet pipe 12, and the blower 14 sends the outside cold air into the first tank 11 to promote the cooling of the gas sent through the inlet pipe 12; subsequently, the cooled gas enters the second tank 21 in the dust removal mechanism 2 through the first ventilation pipe 13, and the dust and other impurities in the gas are removed by the dust removal device 23 to ensure the effectiveness of subsequent capture operations; finally, the purified gas enters the third tank 31 in the capture mechanism 3, where the solvent chemically reacts with carbon dioxide to achieve efficient carbon dioxide capture. Moreover, the carbon dioxide captured in the third tank 31 can be restored to obtain carbon dioxide again. The other gases that are not captured are discharged through the outlet pipe 34 and temporarily stored in the collection tank 4 for further treatment or emission. Each link is equipped with corresponding monitoring devices (such as temperature detectors, pressure sensors) and control modules to ensure the stable operation of the system. The whole process has a high degree of automation, effectively improving the carbon dioxide capture efficiency and purity.

[0073] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A carbon dioxide capture and recovery system, characterized in that: It includes a cooling mechanism (1), which includes a first tank body (11), an intake pipe (12), a first ventilation pipe (13) and a blower (14). The intake pipe (12) and the first ventilation pipe (13) are respectively arranged on both sides of the first tank body (11) and are both communicated with the first tank body (11). The outlet end of the blower (14) is communicated with the first tank body (11) and is arranged between the intake pipe (12) and the first ventilation pipe (13) for delivering air into the first tank body (11). A dust removal mechanism (2), which includes a second tank body (21), a second ventilation pipe (22) and a dust removal device (23). The second tank body (21) is communicated with the first ventilation pipe (13). The second ventilation pipe (22) is communicated with the second tank body (21). The dust removal device (23) is connected to the second tank body (21) and is arranged between the first ventilation pipe (13) and the second ventilation pipe (22) for removing dust from the gas passing through the second tank body (21). And A trapping mechanism (3), which includes a third tank body (31) and an outlet pipe (34). The third tank body (31) is communicated with the second ventilation pipe (22). A solvent for trapping carbon dioxide is contained in the third tank body (31). One end of the outlet pipe (34) is communicated with the second tank body (21), and the other end is communicated with a collection tank (4) for temporarily storing gases other than carbon dioxide. Wherein, a plurality of switch doors (212) for taking and placing the dust removal device (23) are opened on the side wall of the second tank body (21). There are multiple groups of the dust removal devices (23), which are arranged at intervals in sequence along the conveying direction of the gas in the second tank body (21). Each dust removal device (23) is correspondingly provided with the switch door (212). The second tank body (21) is connected with an isolation device (24). The isolation device (24) is arranged on both sides of the switch door (212) for isolating the switch door (212) from the internal space of the second tank body (21). The second tank body (21) is connected with auxiliary ventilation pipes (25). There are multiple auxiliary ventilation pipes (25). Each switch door (212) is correspondingly provided with the auxiliary ventilation pipe (25). Both ends of the auxiliary ventilation pipe (25) are communicated with the inside of the second tank body (21), and the two ports of the auxiliary ventilation pipe (25) are respectively arranged on both sides of the isolation device (24). A blocking plate (251) for blocking itself is arranged inside the auxiliary ventilation pipe (25). The blocking plate (251) is connected with a driving device (26). The driving device (26) can drive the blocking plate (251) to open or close the auxiliary ventilation pipe (25).

2. The carbon dioxide capture and recovery system according to claim 1, characterized in that: The isolation device (24) includes a first placement box (241), a first cylinder (242), a first partition plate (243), a second placement box (244), a second cylinder (245), and a second partition plate (246). The first placement box (241) and the second placement box (244) are both connected to the second tank body (21). The interiors of the first placement box (241) and the second placement box (244) are both in communication with the interior of the second tank body (21). The first cylinder (242) is connected to the first placement box (241), and the drive shaft of the first cylinder (242) passes through the first placement box (241) and is connected to the first partition plate (243). The second cylinder (245) is connected to the second placement box (244), and the drive shaft of the second cylinder (245) passes through the second placement box (244) and is connected to the second partition plate (246). The first partition plate (243) and the second partition plate (246) are respectively located on both sides of the dust removal device (23), and both the first partition plate (243) and the second partition plate (246) can extend into the second tank body (21) to isolate the space between the first partition plate (243) and the second partition plate (246).

3. The carbon dioxide capture and recovery system according to claim 2, wherein: A box body (213) is connected to the second tank body (21). The driving device (26) is arranged in the box body (213) and includes a driving block (261), a plurality of springs (262), a slider (263), a lead screw (264), a first bevel gear (265), a second bevel gear (266), and a shaft rod (267). One end of the driving block (261) passes through the second tank body (21) and extends into the interior of the second tank body (21). The driving block (261) is arranged corresponding to the second partition plate (246), and the driving block (261) is slidably connected to the second tank body (21). One end of the spring (262) is connected to the driving block (261), and the other end is connected to the box body (213). The slider (263) is connected to the driving block (261) and is slidably connected to the box body (213). The lead screw (264) passes through the slider (263) and is threadedly connected to the slider (263). The lead screw (264) is rotatably connected to the box body (213). The first bevel gear (265) is fixedly connected to the lead screw (264). The second bevel gear (266) is connected to the shaft rod (267) and meshes with the first bevel gear (265). The shaft rod (267) passes through the box body (213) and the auxiliary ventilation pipe (25), and the shaft rod (267) is rotatably connected to the box body (213). The shaft rod (267) is fixedly connected to the blocking plate (251) and can drive the blocking plate (251) to rotate in the auxiliary ventilation pipe (25).

4. A carbon dioxide capture and recovery system according to claim 1, characterized in that: The dust removal device (23) includes a fixed frame (231) and a filter cloth (232). The fixed frame (231) is connected to the inner wall of the second tank body (21). The filter cloth (232) is connected to the inner wall of the fixed frame (231) and covers the hollow part of the fixed frame (231). The dust removal device (23) can isolate the first air pipe (13) and the second air pipe (22).

5. A carbon dioxide capture and recovery system according to claim 4, characterized in that: A limiting groove (211) is formed in the inner wall of the second tank body (21). The fixed frame (231) is arranged in the limiting groove (211) and is clamped with the second tank body (21).

6. A carbon dioxide capture and recovery system according to claim 1, characterized in that: The first tank body (11) is connected with a temperature detector for detecting the internal temperature. The temperature detector is electrically connected with a control module. The cooling mechanism (1) further includes a circulation pipe (15) and a one-way valve (16). The first end of the circulation pipe (15) is communicated with the first tank body (11), and the second end is communicated with the air inlet pipe (12). The one-way valve (16) is connected to the inner wall of the circulation pipe (15). The first end of the circulation pipe (15) and the first air pipe (13) are both connected with a first electromagnetic valve (17). The first electromagnetic valve (17) is electrically connected with the control module.

7. A carbon dioxide capture and recovery system according to claim 1 or 6, characterized in that: Flow meters (18) are connected to the air inlet pipe (12) and the outlet end of the blower (14). The flow meters (18) are electrically connected with the control module.

8. The carbon dioxide capture and recovery system according to claim 1, wherein: A pressure sensor is connected to the inner wall of the second tank body (21) near one end of the first air pipe (13). The pressure sensor is electrically connected with the control module.

9. A carbon dioxide capture and recovery system according to claim 1, characterized in that: A plurality of third tank bodies (31) are provided. The third tank bodies (31) are communicated with branch pipes (32). The branch pipes (32) are communicated with the second air pipe (22). The branch pipes (32) are connected with second electromagnetic valves (33). The second electromagnetic valves (33) are electrically connected with the control module.

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