Carbon dioxide trapping and recycling system

Abstract

The invention discloses a carbon dioxide capturing and recycling system, which belongs to the technical field of carbon dioxide capturing and recycling, and is characterized by comprising a cooling mechanism, the cooling mechanism comprises a first tank body, an air inlet pipe, a first ventilation pipe and an air blower, the air inlet pipe and the first ventilation pipe are both communicated with the first tank body, and the outlet end of the air blower is communicated with the first tank body; the air inlet pipe is arranged between the air inlet pipe and the first breather pipe and used for conveying air into the first tank body; the dust removal mechanism comprises 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 with the second tank body and arranged between the first ventilation pipe and the second ventilation pipe; the trapping mechanism comprises a third tank body and an air outlet pipe, the third tank body is communicated with the second breather pipe, a solvent for trapping carbon dioxide is arranged in the third tank body, one end of the air outlet pipe is communicated with the second tank body, the other end of the air outlet pipe is communicated with a collecting tank, and the effect of efficiently trapping carbon dioxide is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of carbon dioxide capture and recovery, and in particular to a carbon dioxide capture and recovery system. Background Art

[0002] In the process of globalization, environmental issues have received increasing attention, among which climate change is particularly prominent. Carbon dioxide, as a major greenhouse gas, continues to accumulate in the natural environment, causing global temperatures to gradually rise, which has a profound impact on the ecosystem and human society. In order to meet this challenge, measures need to be taken to reduce carbon emissions. On the one hand, carbon emissions should be reduced from sources such as industry, transportation, and construction; on the other hand, carbon emissions generated in manufacturing and life cannot be completely reduced to zero, and relevant technologies need to be used to absorb, fix, and utilize the emitted carbon dioxide and other greenhouse gases, and to separate the released carbon dioxide and other greenhouse gases from emission sources such as industrial exhaust gas for long-term storage or reuse.

[0003] At present, coal-fired boilers mainly use coal as raw material for combustion and are widely used in power, machinery, chemical, medical, food processing, papermaking and other industries. The flue gas discharged by the boiler contains a large amount of acidic gas carbon dioxide. The presence of carbon dioxide gas not only causes environmental pollution problems, but also causes corrosion to the transmission pipeline and increases industrial production costs. It is necessary to capture the carbon dioxide in the tail gas. Therefore, it is urgent to develop a capture and recovery system for capturing carbon dioxide with high efficiency. Summary of the invention

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

[0005] The present invention provides a carbon dioxide capture and recovery system that adopts the following technical solution: A carbon dioxide capture and recovery system, comprising a cooling mechanism, which comprises a first tank body, an air inlet pipe, a first ventilation pipe and a blower, wherein the air inlet pipe and the first ventilation pipe are respectively arranged on both sides of the first tank body and are both connected to the first tank body, the outlet end of the blower is connected to the first tank body and is arranged between the air inlet pipe and the first ventilation pipe, and is used to transport air to the first tank body; a dust removal mechanism, comprising a second tank body, a second ventilation pipe and a dust removal device, the second tank body is connected to the first ventilation pipe, the second ventilation pipe is connected to the second tank body, the dust removal device is connected to the second tank body and is arranged between the first ventilation pipe and the second ventilation pipe, and is used to remove dust from the gas passing through the second tank body; and a capture mechanism, comprising a third tank body and an air outlet pipe, the third tank body is connected to the second ventilation pipe, a solvent for capturing carbon dioxide is contained in the third tank body, one end of the air outlet pipe is connected to the second tank body, and the other end A collection tank for temporarily storing gases other than carbon dioxide is connected to the second tank body; wherein, a plurality of switch doors for taking and placing the dust removal device are opened on the side wall of the second tank body, and the dust removal device is provided with multiple groups, and is arranged in sequence and spaced apart along the conveying direction of the gas in the second tank body, and each of the dust removal devices is correspondingly provided with the switch door, and the second tank body is connected with an isolation device, and the isolation device is arranged on both sides of the switch door, and is used to isolate the switch door from the internal space of the second tank body, and the second tank body is connected with an auxiliary ventilation pipe, and the auxiliary ventilation pipe is provided with multiple, and each of the switch doors is correspondingly provided with the auxiliary ventilation pipe, and both ends of the auxiliary ventilation pipe are connected to the inside of the second tank body, and the two ports of the auxiliary ventilation pipe are respectively arranged on both sides of the isolation device, and a sealing plate for sealing itself is provided inside the auxiliary ventilation pipe, and the sealing plate is connected with a driving device, and the driving device can drive the sealing plate to open or close the auxiliary ventilation pipe.

[0006] By adopting the above technical solution, when in use, the gas entering the system is first pre-treated by a cooling mechanism to reduce the gas temperature to reduce the energy consumption in the subsequent processing steps. Specifically, the gas enters the first tank body from the air inlet pipe, and the blower sends the external cold air into the first tank body to promote gas cooling, which helps to improve the solubility of carbon dioxide in the subsequent capture process, thereby improving the capture efficiency. Subsequently, the cooled gas enters the second tank body in the dust removal mechanism through the first ventilation pipe, and the dust removal device is used to remove dust and other impurities in the gas to ensure the effectiveness of the subsequent capture operation. Finally, the purified gas enters the third tank body 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 body can be reduced again to obtain carbon dioxide gas. Other gases that are not captured are discharged through the outlet pipe and temporarily stored in the collection tank for further processing. The whole process has a high degree of automation, which can effectively improve the efficiency and purity of carbon dioxide capture, while reducing operating costs.

[0007] At least one of the multiple dust removal devices is working. When one group of dust removal devices is under maintenance or replacement, the other groups can work normally to ensure that the system can continuously and efficiently remove dust particles in the gas. The design of the opening and closing doors and isolation devices makes it more convenient to replace the filter cloth. The replacement of the dust removal device can be completed without stopping the machine, which improves the maintenance efficiency and reliability of the system. The setting of the auxiliary ventilation pipe allows each dust removal group to work independently. When a certain dust removal group needs to be replaced or maintained, the corresponding auxiliary ventilation pipe can be opened to allow other parts to continue to operate normally, which improves the stability and operability of the system. The design of the sealing plate and its drive device ensures that the auxiliary ventilation pipe remains closed when it is not necessary, avoiding the bypass discharge of untreated gas, and ensuring the efficient operation and environmental protection performance of the system. When used with the air pressure sensor and 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.

[0008] Preferably, the isolation device includes a first placement box, a first cylinder, a first partition, a second placement box, a second cylinder and a second partition, the first placement box and the second placement box are both connected to the second tank body, the interior of the first placement box and the interior of the second placement box are both connected to the interior of the second tank body, the first cylinder is connected to the first placement box, the driving shaft of the first cylinder passes through the first placement box and is connected to the first partition, the second cylinder is connected to the second placement box, the driving shaft of the second cylinder passes through the second placement box and is connected to the second partition, the first partition and the second partition are respectively located on both sides of the dust removal device, the first partition and the second partition can both extend into the second tank body, and are used to isolate the space between the first partition and the second partition.

[0009] By adopting the above technical solution, the carbon dioxide capture and recovery system can effectively isolate different areas during the dust removal process. Specifically, when the dust removal device needs to be replaced, the first and second partitions can be driven by the first and second cylinders 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 makes it possible to replace or maintain the dust removal device without affecting the work of other parts, improving the maintenance convenience and operation stability of the system.

[0010] Preferably, the second tank body is connected to a box body, and the driving device is arranged in the box body, including 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 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 plate, the driving block is slidably connected to the second tank body, one end of the spring is connected to the driving block, and the other end is connected to the box body; the slider is connected to the driving block and is slidably connected to the box body, the lead screw passes through the slider and is threadedly connected to the slider, the lead screw is rotatably connected to the box body, the first bevel gear is fixedly connected to the lead screw, the second bevel gear is connected to the shaft rod and meshes with the first bevel gear, the shaft rod passes through the box body and the auxiliary ventilation pipe, the shaft rod is rotatably connected to the box body, and the shaft rod is fixedly connected to the blocking plate, so as to drive the blocking plate to rotate in the auxiliary ventilation pipe.

[0011] By adopting the above technical solution, the second tank body of the carbon dioxide capture and recovery system is connected to the box body, and the driving device arranged in the box body can realize the precise control of the blocking plate. When the auxiliary ventilation pipe needs to be opened or closed, the driving block moves toward the inside of the box body under the action of the second partition, driving the slider to move along the lead screw, thereby rotating the shaft through the transmission of the first bevel gear and the second bevel gear. If the second partition is retracted into the second placement box, the spring resets the driving block and the slider, further resets the lead screw, the first bevel gear, the second bevel gear and the shaft, thereby realizing the control of the position change of the blocking plate. This design not only improves the automation level of the system, but also ensures the stability and safety of the gas flow during the dust removal process, and avoids the errors and inconveniences caused by manual operation.

[0012] Preferably, the dust removal device includes a fixed frame and a filter cloth, the fixed frame is connected to the inner wall of the second tank body, the filter cloth is connected to the inner wall of the fixed frame and covers the hollow part of the fixed frame, and the dust removal device can isolate the first ventilation pipe and the second ventilation pipe.

[0013] By adopting the above technical solution, the dust removal device can effectively remove dust particles in the gas and improve 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 and ensure the cleanliness of the gas entering the third tank.

[0014] Preferably, a limiting groove is provided on the inner wall of the second tank body, and the fixing frame is arranged in the limiting groove and is engaged with the second tank body.

[0015] By adopting the above technical solution, the limiting groove facilitates the installation and limiting of the fixed frame.

[0016] Preferably, the first tank body is connected to a temperature detector for detecting the internal temperature, and the temperature detector is electrically connected to a control module. The cooling mechanism also includes a circulation pipe and a one-way valve. The first end of the circulation pipe is connected to the first tank body, and the second end is connected to the air intake 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 ventilation pipe are both connected to a first solenoid valve, and the first solenoid valve is electrically connected to the control module.

[0017] By adopting the above technical solution, the temperature detector can monitor in real time and feed back to the control module. The control module automatically adjusts to open the first solenoid valve in the circulation pipe or the first solenoid valve in the first ventilation pipe according to the temperature change. When the temperature exceeds the preset value, the first solenoid valve of the circulation pipe opens and the first solenoid valve in the first ventilation pipe closes, so that the air in the circulation pipe circulates to achieve a cooling effect; at the same time, the one-way valve reduces the possibility of untreated gas in the intake 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 ventilation pipe opens, and the first solenoid valve of the circulation pipe closes to transport the gas to the next step. This design effectively improves the working efficiency and reliability of the system.

[0018] Preferably, the air inlet pipe and the outlet end of the blower are both connected to a flow meter, and the flow meter is electrically connected to a control module.

[0019] By adopting the above technical solution, the gas flow entering the system can be accurately monitored and controlled, thereby ensuring the stability and efficiency of the system operation. At the same time, through real-time monitoring of the flow at the intake pipe and the blower outlet, the parameters can be adjusted in time when the system is abnormal, avoiding the decline in capture effect due to flow fluctuations, and improving the reliability and safety of the entire system.

[0020] Preferably, an air pressure sensor is connected to the inner wall of the second tank body close to one end of the first ventilation pipe, and the air pressure sensor is electrically connected to a control module.

[0021] By adopting the above technical solution, when the filter cloth has poor filtering effect, the pressure change detected by the air pressure sensor can be used to determine whether the filter cloth is blocked. If the pressure value exceeds the preset threshold, it means that the filter cloth is blocked, and the control module will send a signal to prompt the operator to replace the filter cloth in time.

[0022] Preferably, a plurality of the third tank bodies are provided, the third tank bodies are connected with a branch pipe, the branch pipe is connected with the second ventilation pipe, the branch pipe is connected with a second solenoid valve, and the second solenoid valve is electrically connected with a control module.

[0023] 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 carbon dioxide capture, ensuring the continuous operation and high efficiency of the system. At the same time, the setting of the second solenoid valve makes it possible to control the on and off of each branch pipe individually, further improving the flexibility and reliability of the system.

[0024] In summary, the present invention has the following beneficial effects: When in use, the gas entering the system is first pre-treated by a cooling mechanism to reduce the gas temperature to reduce energy consumption in subsequent processing steps. Specifically, the gas enters the first tank body from the air inlet pipe, and the blower sends cold air from the outside into the first tank body to promote gas cooling, which helps to improve the solubility of carbon dioxide in the subsequent capture process, thereby improving the capture efficiency. Subsequently, the cooled gas enters the second tank body in the dust removal mechanism through the first ventilation pipe, and the dust removal device is used to remove dust and other impurities in the gas to ensure the effectiveness of subsequent capture operations. Finally, the purified gas enters the third tank body 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 body can be reduced again to obtain carbon dioxide gas. Other gases that are not captured are discharged through the outlet pipe and temporarily stored in the collection tank for further processing or discharge. The entire process has a high degree of automation, which can effectively improve the efficiency and purity of carbon dioxide capture, while reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a carbon dioxide capture and recovery system.

[0026] Figure 2 It is a structural schematic diagram of the cooling mechanism.

[0027] Figure 3 It is a structural diagram of the dust removal mechanism.

[0028] Figure 4 It is a side view of the dust removal mechanism.

[0029] Figure 5 yes Figure 4 Schematic cross-section along the AA direction.

[0030] Figure 6 yes Figure 5 Schematic diagram of the enlarged portion B.

[0031] Description of reference numerals: 1. Cooling mechanism; 11. First tank; 12. Air inlet pipe; 13. First ventilation pipe; 14. Blower; 15. Circulation pipe; 16. One-way valve; 17. First solenoid valve; 18. Flow meter; 2. Dust removal mechanism; 21. Second tank; 211. Limiting groove; 212. Open / close door; 213. Box; 22. Second ventilation pipe; 23. Dust removal device; 231. Fixing frame; 232. Filter cloth; 24. Isolation device; 241. First placement box; 242. First air filter; Cylinder; 243, first partition; 244, second placement box; 245, second cylinder; 246, second partition; 25, auxiliary ventilation pipe; 251, blocking plate; 26, driving device; 261, driving block; 262, spring; 263, slider; 264, lead screw; 265, first bevel gear; 266, second bevel gear; 267, shaft; 3, capture mechanism; 31, third tank body; 32, branch pipe; 33, second solenoid valve; 34, outlet pipe; 4, collection tank. DETAILED DESCRIPTION

[0032] In order to enable technicians in this field to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0033] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0034] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0035] A carbon dioxide capture and recovery system, referring to Figure 1 and Figure 2 , including a cooling mechanism 1, a dust removal mechanism 2, a collection mechanism 3 and a collection tank 4. The cooling mechanism 1 includes a first tank body 11, an air intake pipe 12, a first ventilation pipe 13 and a blower 14. The air intake pipe 12 and the first ventilation pipe 13 are respectively arranged on both sides of the first tank body 11, and are both connected to the first tank body 11. The outlet end of the blower 14 is connected to the first tank body 11, and is arranged between the air intake pipe 12 and the first ventilation pipe 13, and is used to transport air to the inside of the first tank body 11.

[0036] Reference 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 connected to 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 dust removal of the gas passing through the second tank body 21.

[0037] Reference Figure 1 The capture mechanism 3 includes a third tank body 31 and an air outlet pipe 34. The third tank body 31 is connected to the second vent pipe 22. A solvent for capturing carbon dioxide is provided in the third tank body 31. One end of the air outlet pipe 34 is connected to the second tank body 21, and the other end is connected to the collection tank 4. The collection tank 4 is used to temporarily store gases other than carbon dioxide. The solvent for capturing carbon dioxide is an amine solvent such as ethanolamine (MEA).

[0038] The whole system cools down 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 the carbon dioxide from the gas through the capture mechanism 3. The carbon dioxide captured by the capture mechanism 3 can be reduced again to obtain carbon dioxide gas. Other gases that are not captured are discharged through the outlet pipe 34 and temporarily stored in the collection tank 4 for further processing. The whole process has a high degree of automation, which can effectively improve the efficiency and purity of carbon dioxide capture, while reducing operating costs.

[0039] Reference Figure 2 A temperature detector is fixedly connected to the inner wall of the first tank body 11 near the first ventilation pipe 13 to detect the internal temperature. The temperature detector is electrically connected to the control module.

[0040] Reference Figure 2 A flow meter 18 is provided in the outlet end of the air intake pipe 12 and the blower 14, and the flow meter 18 is electrically connected to the control module.

[0041] The gas flow entering the system can be accurately monitored and controlled, thereby ensuring the stability and efficiency of the system operation. At the same time, through real-time monitoring of the flow at the outlet of the air inlet pipe 12 and the blower 14, the parameters can be adjusted in time when the system is abnormal, avoiding the reduction of the capture effect due to flow fluctuations, and improving the reliability and safety of the entire system.

[0042] Reference 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, and the first end of the circulation pipe 15 is in communication with the first tank body 11, and the second end is in communication with the intake pipe 12. The first end of the circulation pipe 15 and the first ventilation pipe 13 are both fixedly connected with a first solenoid valve 17, and the two first solenoid valves 17 are both electrically connected to the control module, and the control module can select any first solenoid valve 17 to open.

[0043] When the temperature exceeds the preset value, the first solenoid valve 17 of the circulation pipe 15 is opened and the first solenoid valve 17 in the first ventilation pipe 13 is closed, so that the air in the circulation pipe 15 can circulate and 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 the first solenoid valve 17 in the circulation pipe 15 is closed, so that the gas is transported to the next step. This design effectively improves the working efficiency and reliability of the system.

[0044] Reference Figure 2 The one-way valve 16 is fixedly connected to the second end of the circulation pipe 15 to reduce the possibility of untreated gas in the intake pipe 12 entering the circulation pipe 15, thereby ensuring the stability and safety of the system.

[0045] Reference Figure 5 The dust removal device 23 includes a fixing frame 231 and a filter cloth 232. The fixing frame 231 is a square frame, and the filter cloth 232 covers the hollow part of the fixing frame 231 and is fixedly connected to the inner wall of the fixing frame 231. The dust removal device 23 isolates the first ventilation pipe 13 and the second ventilation pipe 22.

[0046] The dust removal device 23 can effectively remove dust particles in the gas, thereby improving the efficiency and purity of the subsequent carbon dioxide capture process.

[0047] Reference Figure 5An air pressure sensor is connected to the inner wall of the second tank body 21 near one end of the first ventilation pipe 13 to detect the pressure change inside the second tank body 21. The air pressure sensor is electrically connected to the control module.

[0048] Reference Figure 5 and Figure 6 The inner wall of the second tank body 21 is provided with a limiting groove 211, which surrounds the inner wall of the second tank body 21. The fixing frame 231 is arranged in the limiting groove 211 and is engaged with the second tank body 21 to limit the fixing frame 231.

[0049] Reference Figure 3 and Figure 5 The top surface of the second tank body 21 is provided with a through hole, and the through hole is connected 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 engaged with the second tank body 21 to achieve the blocking of the through hole.

[0050] When the filtering effect of the filter cloth 232 is not good, the pressure change detected by the air pressure sensor can be used to determine whether the filter cloth 232 is blocked. 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.

[0051] Reference Figure 5 The second tank body 21 is connected to an isolation device 24, which includes a first placement box 241, a first cylinder 242, a first baffle 243, a second placement box 244, a second cylinder 245, and a second baffle 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 connected to 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 fixed frame 231 along the gas delivery direction.

[0052] Reference Figure 5 The first cylinder 242 is fixedly connected to the first placement box 241 , and its driving shaft passes through the first placement box 241 and is fixedly connected to the first partition plate 243 . The first partition plate 243 can extend into the second tank body 21 .

[0053] The second cylinder 245 is fixedly connected to the second placement box 244, and its driving shaft passes through the second placement box 244 and is fixedly connected to the second partition plate 246. The second partition plate 246 can extend into the second tank body 21.

[0054] Reference Figure 5When the first partition plate 243 and the second partition plate 246 are both extended to the second tank body 21, the first partition plate 243 and the second partition plate 246 are respectively located on both sides of the fixing frame 231, and the first partition plate 243 and the second partition plate 246 can isolate the space therebetween.

[0055] When the dust removal device 23 needs to be replaced, the first partition 243 and the second partition 246 can be driven by the first cylinder 242 and the second cylinder 245 to extend into the second tank 21, so as to isolate the area where the dust removal device 23 to be replaced is located from other areas, thereby reducing the possibility of unfiltered gas entering the filtered area, thereby improving the dust removal efficiency and quality. At the same time, this design makes it possible to replace or maintain the dust removal device 23 without affecting the work of other parts, thereby improving the maintenance convenience and operation stability of the system.

[0056] Reference Figure 5 and Figure 6 The dust removal device 23, the switch door 212, the limit groove 211, and the isolation device 24 constitute a dust removal group, and there are multiple dust removal groups. In this embodiment, two dust removal groups are arranged at intervals along the gas conveying direction.

[0057] The two dust removal groups can work in turn or simultaneously. When one group of dust removal devices 23 is in maintenance or replacement state, the other groups can still operate normally, ensuring that the system continues to efficiently remove dust particles in the gas.

[0058] Reference Figure 5 The first tank body 11 is fixedly connected with an auxiliary ventilation pipe 25, and a plurality of auxiliary ventilation pipes 25 are provided, 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 one to one with the two dust removal groups.

[0059] Reference Figure 5 Both ends of the auxiliary ventilation pipe 25 are connected to the interior of the second tank 21. The first end of the auxiliary ventilation pipe 25 is arranged on a side of the first partition 243 away from the second partition 246, and the second end of the auxiliary ventilation pipe 25 is arranged on a side of the second partition 246 away from the first partition 243.

[0060] Reference Figure 6 The auxiliary vent pipe 25 is provided with a blocking plate 251, which is rotatably connected to the auxiliary vent pipe 25 via a rotating shaft, and can block the auxiliary vent pipe 25 when the blocking plate 251 is in a horizontal state. The second tank body 21 is connected to a driving device 26 that drives the blocking plate 251 to open or close the auxiliary vent pipe 25.

[0061] The setting of the auxiliary ventilation pipe 25 allows each dust removal group to work independently. When a certain dust removal group needs to be replaced or maintained, the corresponding auxiliary ventilation pipe 25 can be opened to allow other parts to continue to operate normally, thereby improving the stability and operability of the system.

[0062] Reference Figure 5 and Figure 6 The second tank body 21 is fixedly connected with a box body 213 , and two box bodies 213 are provided, and the two box bodies 213 correspond to the two auxiliary ventilation pipes 25 one by one. The driving device 26 is arranged in the corresponding box body 213 .

[0063] Reference Figure 6 The driving block 261 is in a rectangular parallelepiped shape, one end of which 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 to the second tank body 21. A plurality of springs 262 are provided, one end of the spring 262 is fixedly connected to the driving block 261, and the other end is fixedly connected to the box body 213.

[0064] Reference Figure 6 The slider 263 is fixedly connected to the side wall of 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, and the lead screw 264 is rotatably connected to the box body 213. The first bevel gear 265 is sleeved on the lead screw 264 and is fixedly connected to the lead screw 264. The second bevel gear 266 is fixedly connected to the shaft rod 267 and meshes with the first bevel gear 265, and the shaft rod 267 is rotatably connected to 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 ventilation pipe 25. The shaft rod 267 is fixedly connected to the blocking plate 251, and is used to drive the blocking plate 251 to rotate in the auxiliary ventilation pipe 25.

[0065] When the auxiliary ventilation pipe 25 needs to be opened or closed, the driving block 261 moves toward the inside of the box body 213 under the action of the first partition 243, driving the slider 263 to move along the screw 264, thereby rotating the shaft 267 through the transmission of the first bevel gear 265 and the second bevel gear 266. If the first partition 243 retracts into the first placement box 241, the spring 262 resets the driving block 261 and the slider 263, and further resets the screw 264, the first bevel gear 265, the second bevel gear 266 and the shaft 267, thereby realizing the control of the position change of the blocking plate 251.

[0066] Reference Figure 1 A plurality of third tank bodies 31 are provided, and each third tank body 31 is connected to a branch pipe 32, and the branch pipe 32 is connected to the second ventilation pipe 22. The branch pipe 32 is fixedly connected to a second solenoid valve 33, and the second solenoid valve 33 is electrically connected to the control module.

[0067] When one of the third tanks 31 is full of carbon dioxide or fails, the control module can automatically switch to other available third tanks 31 to continue carbon dioxide capture, ensuring continuous operation and high efficiency of the system.

[0068] Reference Figure 1 The outlet pipe 34 includes a branch part and a collection part, and the branch part is provided with a plurality of branches and all are connected to the membership part. The third tank body 31 is connected to the branch part, and the collection part is connected to the collection tank 4.

[0069] The use principle of the present application is as follows: when in use, the gas is sent into the first tank body 11 from the air inlet pipe 12, and the blower 14 sends the external cold air into the first tank body 11 to promote the cooling of the gas sent into the air inlet pipe 12; then, the cooled gas enters the second tank body 21 in the dust removal mechanism 2 through the first ventilation pipe 13, and the dust removal device 23 is used to remove dust and other impurities in the gas to ensure the effectiveness of the subsequent capture operation; finally, the purified gas enters the third tank body 31 in the capture mechanism 3, where the solvent reacts chemically with carbon dioxide to achieve efficient capture of carbon dioxide. And the carbon dioxide captured in the third tank body 31 can be reduced again to obtain carbon dioxide. Other gases that are not captured are discharged through the outlet pipe 34 and temporarily stored in the collection tank 4 for further processing or discharge. Each link has corresponding monitoring equipment (such as temperature detector, air pressure sensor) and control module to ensure the stable operation of the system. The whole process has a high degree of automation, which effectively improves the efficiency and purity of carbon dioxide capture.

[0070] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon dioxide capture and recovery system, characterized in that: The invention comprises a cooling mechanism (1), which comprises a first tank body (11), an air intake pipe (12), a first ventilation pipe (13) and a blower (14); the air intake pipe (12) and the first ventilation pipe (13) are respectively arranged on both sides of the first tank body (11) and are both in communication with the first tank body (11); the outlet end of the blower (14) is in communication with the first tank body (11) and is arranged between the air intake pipe (12) and the first ventilation pipe (13) and is used to transport air into the first tank body (11); A dust removal mechanism (2), comprising a second tank body (21), a second ventilation pipe (22) and a dust removal device (23), wherein the second tank body (21) is in communication with the first ventilation pipe (13), the second ventilation pipe (22) is in communication 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), and is used for removing dust from gas passing through the second tank body (21); as well as The capture mechanism (3) comprises a third tank body (31) and an air outlet pipe (34), wherein the third tank body (31) is connected to the second ventilation pipe (22), the third tank body (31) contains a solvent for capturing carbon dioxide, one end of the air outlet pipe (34) is connected to the second tank body (21), and the other end is connected to a collection tank (4) for temporarily storing gases other than carbon dioxide; The side wall of the second tank body (21) is provided with a plurality of switch doors (212) for taking in and placing the dust removal device (23); the dust removal device (23) is provided with a plurality of groups and is sequentially arranged at intervals along the conveying direction of the gas in the second tank body (21); each of the dust removal devices (23) is provided with a corresponding 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) and is used to isolate the switch door (212) from the internal space of the second tank body (21); the second tank body (21) is connected with an auxiliary A ventilation pipe (25), wherein a plurality of auxiliary ventilation pipes (25) are provided, and each of the switch doors (212) is provided with an auxiliary ventilation pipe (25) correspondingly, both ends of the auxiliary ventilation pipe (25) are connected to the interior of the second tank body (21), and the two ends of the auxiliary ventilation pipe (25) are respectively arranged on both sides of the isolation device (24), and a sealing plate (251) is provided inside the auxiliary ventilation pipe (25) for sealing itself, and the sealing plate (251) is connected to a driving device (26), and the driving device (26) can drive the sealing plate (251) to open or close the auxiliary ventilation pipe (25).

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

3. A carbon dioxide capture and recovery system according to claim 2, characterized in that: The second tank body (21) is connected to a box body (213); the driving device (26) is arranged in the box body (213), and comprises 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 (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); 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 rotationally 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); the shaft rod (267) is rotationally connected to the box body (213); the shaft rod (267) is fixedly connected to the sealing plate (251) and can drive the sealing 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) comprises a fixing frame (231) and a filter cloth (232); the fixing 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 fixing frame (231) and covers the hollow part of the fixing frame (231); the dust removal device (23) is capable of isolating the first ventilation pipe (13) and the second ventilation pipe (22).

5. A carbon dioxide capture and recovery system according to claim 4, characterized in that: The inner wall of the second tank body (21) is provided with a limiting groove (211), and the fixing frame (231) is arranged in the limiting groove (211) and is engaged 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 to a temperature detector for detecting the internal temperature, and the temperature detector is electrically connected to a control module. The cooling mechanism (1) further comprises a circulation pipe (15) and a one-way valve (16). The first end of the circulation pipe (15) is connected to the first tank body (11), and the second end is connected to the air intake 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 ventilation pipe (13) are both connected to a first solenoid valve (17), and the first solenoid valve (17) is electrically connected to the control module.

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

8. A carbon dioxide capture and recovery system according to claim 1, characterized in that: An air pressure sensor is connected to the inner wall of the second tank body (21) close to one end of the first ventilation pipe (13), and the air pressure sensor is electrically connected to a control module.

9. A carbon dioxide capture and recovery system according to claim 1, characterized in that: The third tank body (31) is provided with a plurality of them, the third tank body (31) is connected with a branch pipe (32), the branch pipe (32) is connected with the second ventilation pipe (22), the branch pipe (32) is connected with a second solenoid valve (33), and the second solenoid valve (33) is electrically connected with a control module.

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