Carbon capture system and tower body volume adjusting device thereof

Abstract

The embodiment of the invention provides a carbon capture system and a tower body volume adjusting device thereof. The volume adjusting device comprises an adjusting piece capable of moving axially, and the outer edge of the adjusting piece and the inner wall of the tower body form dynamic sealing through a sealing piece. The first end of the transmission mechanism is connected with the adjusting part, and the second end of the transmission mechanism extends out of the outer side of the tower body; and the operating handle is connected with the second end of the transmission mechanism, and the operating handle drives the transmission mechanism to drive the adjusting piece to move in the axial direction of the tower body so as to adjust the volume of the tower body. The volume of the tower body can be flexibly adjusted according to actual requirements by adopting the adjusting piece capable of axially moving, so that the exposure area and time of an amine solution in a system are reduced, the risk of system corrosion is reduced, and the volatilization and escape phenomena of the amine solution are reduced.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of carbon dioxide capture, and particularly to a carbon capture system and a tower volume adjustment device thereof. Background Art

[0002] In the field of industrial carbon dioxide (CO2) capture, especially in the industrial processes of treating flue gas containing CO2 such as coal-fired power plants, combined heat and power, and natural gas, due to factors such as the volatility of power demand or production schedule adjustment, significant low periods of CO2 processing volume occur. During this period, the actual amount of CO2 to be processed is far lower than the system design capacity. However, traditional CO2 capture systems usually maintain high-load operating states in links such as high-level amine solution storage, liquid heat exchange, and gas compression. This operating mode brings many problems:

[0003] Amine degradation and amine escape: When operating with a high-level amine solution storage, the phenomena of thermal degradation, volatilization, and escape of the amine solution in the absorption tower and regeneration tower during CO2 capture are particularly obvious, which not only aggravates amine degradation and amine escape, but also promotes more thermal degradation and volatilization losses.

[0004] Unnecessary energy consumption: Equipment such as heat exchangers, carbon dioxide compressors, and steam compressors designed to adapt to the highest CO2 processing volume continue to operate at high loads under low processing volume conditions, resulting in unnecessary energy waste.

[0005] System corrosion: Continuous high-level operation increases the corrosion risk of the system and exacerbates the volatilization and escape of the amine solution, thus having an adverse impact on the environment.

[0006] In response to the above challenges, the prior art fails to provide an effective method to dynamically adjust the storage volume of the amine solution to meet the requirements of different processing volumes.

[0007] Therefore, the present invention aims to propose a technical solution that can efficiently and flexibly adjust the storage volume of the amine solution under different working conditions, and achieve longer life operation and higher energy efficiency performance of the carbon capture system by reducing the corrosion degree of the system and pipelines, reducing the environmental cost caused by amine escape, and reducing the cost of amine solution regeneration energy. Summary of the Invention

[0008] Embodiments of the present invention aim to at least solve one of the technical problems existing in the prior art, and provide a carbon capture system and a tower volume adjustment device thereof.

[0009] In a first aspect, embodiments of the present invention provide a tower volume adjustment device for a carbon capture system, and the volume adjustment device includes:

[0010] An axially movable adjustment member, the outer edge of the adjustment member forms a dynamic seal with the inner wall of the tower through a seal.

[0011] A transmission mechanism, the first end of the transmission mechanism is connected to the adjusting member, and the second end of the transmission mechanism extends outside the tower body;

[0012] An operating handle, the operating handle is connected to the second end of the transmission mechanism, and the operating handle drives the transmission mechanism to drive the adjusting member to move along the axial direction of the tower body so as to adjust the volume of the tower body.

[0013] In some possible embodiments, a reference mark is provided on the outer wall of the tower body, and an indicating disk with angular scales is provided at the rotating end of the operating handle, and the indicating disk and the reference mark on the outer wall of the tower body cooperate to form a volume indicating mechanism; wherein,

[0014] The scale value of the indicating disk is calibrated according to the transmission ratio of the transmission mechanism so as to directly relate the axial displacement amount of the adjusting member and the corresponding change amount of the tower body volume.

[0015] In some possible embodiments, the transmission mechanism includes a transmission screw and a nut slider;

[0016] The transmission screw is arranged along the axial direction of the tower body, the first end of the transmission screw is fixed to the top wall of the tower body, and the second end of the transmission screw extends outside the tower body and is connected to the operating handle;

[0017] The nut slider is sleeved on the transmission screw and is fixedly connected to the adjusting member.

[0018] In some possible embodiments, a guiding groove is arranged along the axial direction on the inner wall of the tower body, and a guiding key is arranged on the outer wall of the nut slider and is matched with the guiding groove.

[0019] In some possible embodiments, the volume adjusting device further includes a displacement sensor;

[0020] The displacement sensor is arranged on the nut slider to monitor the current position of the adjusting member in real time.

[0021] In some possible embodiments, the adjusting member is made of a stainless steel disk.

[0022] In some possible embodiments, an air defense pipeline opening is further arranged on the adjusting member.

[0023] In some possible embodiments, the sealing member is made of a rubber ring.

[0024] In some possible embodiments, the diameter of the adjusting member matches the inner diameter of the tower body.

[0025] Second aspect, an embodiment of the present invention provides a carbon capture system, and the carbon capture system includes the volume adjustment device described above.

[0026] For the carbon capture system and its tower volume adjustment device according to the embodiment of the present invention, by adopting an axially movable adjustment member and using a seal to ensure the dynamic seal between the outer edge of the adjustment member and the inner wall of the tower, the tower volume can be flexibly adjusted according to actual needs, which reduces the exposure area and time of the amine solution in the system, thereby reducing the risk of system corrosion and reducing the volatilization and escape of the amine solution. In addition, this device allows the operator to drive the transmission mechanism with an operating handle to adjust the effective volume of the tower according to the actual processing capacity requirements. This ability to adjust as needed means that when the processing capacity is low, it is not necessary to maintain the high-load operation state of all equipment, thereby effectively reducing unnecessary energy consumption. Since the tower volume can be precisely controlled, the amine solution storage in the absorption tower and the regeneration tower can be adjusted according to actual needs, avoiding the additional thermal degradation, volatilization loss and corresponding energy consumption caused by the high-level amine solution storage. This not only improves the utilization rate of the amine solution but also further reduces the energy consumption of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of the tower volume adjustment device of the carbon capture system according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0030] Unless otherwise specifically stated, the technical terms or scientific terms used in the embodiments of the present invention should have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The use of "including" or "comprising" in the embodiments of the present invention does not limit the shapes, numbers, steps, actions, operations, components, elements and / or their groups mentioned, nor does it exclude the presence or addition of one or more other different shapes, numbers, steps, actions, operations, components, elements and / or their groups, or the addition of these. 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 quantity and order of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more, unless otherwise specifically and clearly defined.

[0031] Unless otherwise specifically stated, the relative settings, numerical expressions and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. For technologies, methods and devices known to those of ordinary skill in the relevant art, they may not be discussed in detail, but where appropriate, the technologies, methods and devices shown should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific other examples may have different values. It should be noted that: similar symbols and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0032] In the description of the embodiments of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the embodiments of the present invention, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in the embodiments of the present invention and the features of different embodiments or examples.

[0033] Next, example embodiments of the present invention will be described in detail with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention. It should be understood that the present invention is not limited by the example embodiments described here.

[0034] Figure 1 This is a schematic structural diagram of the tower volume adjustment device of the carbon capture system according to an embodiment of the present invention. As Figure 1 shown, an embodiment of the present invention relates to a tower volume adjustment device for a carbon capture system. The volume adjustment device includes: an axially movable adjustment member 1, a sealing member 3, a transmission mechanism (not shown in the figure), and an operating handle 4. The outer edge of the adjustment member 1 forms a dynamic seal with the inner wall of the tower through the sealing member 3. That is to say, the adjustment member 1 can maintain a sealed connection with the inner wall of the tower while axially moving along the inner wall of the tower. The first end of the transmission mechanism is connected to the adjustment member 1, and the second end of the transmission mechanism extends outside the tower. The operating handle 4 is connected to the second end of the transmission mechanism, and the operating handle 4 drives the transmission mechanism to drive the adjustment member 1 to axially move along the tower to adjust the volume of the tower.

[0035] For the tower volume adjustment device of the carbon capture system according to the embodiment of the present invention, by adopting an axially movable adjustment member and using a sealing member to ensure the dynamic seal between the outer edge of the adjustment member and the inner wall of the tower, the volume of the tower can be flexibly adjusted according to actual needs, which reduces the exposure area and time of the amine solution in the system, thereby reducing the risk of system corrosion and reducing the volatilization and escape of the amine solution. In addition, this device allows the operator to drive the transmission mechanism with the operating handle to adjust the effective volume of the tower according to the actual processing capacity requirements. This ability to adjust as needed means that when the processing capacity is low, it is not necessary to maintain the high-load operating state of all equipment, thus effectively reducing unnecessary energy consumption. Since the volume of the tower can be precisely controlled, the storage capacity of the amine solution in the absorption tower and the regeneration tower can be adjusted according to actual needs, avoiding the additional thermal degradation, volatilization loss and corresponding energy consumption caused by the high-level amine solution storage. This not only improves the utilization rate of the amine solution, but also further reduces the energy consumption of the entire system.

[0036] In summary, for the tower volume adjustment device of the carbon capture system according to the embodiment of the present invention, by optimizing the tower volume management, significant improvements have been achieved in problems such as system corrosion, amine escape, unnecessary energy consumption and amine solution degradation existing in the traditional CO2 capture system.

[0037] Exemplarily, as Figure 1 shown, a reference mark (not shown in the figure) is provided on the outer wall of the tower. The rotating end of the operating handle 4 is provided with an indicating disk with angle scales. The indicating disk and the reference mark on the outer wall of the tower cooperate to form a volume indicating mechanism; wherein, the scale value of the indicating disk is calibrated according to the transmission ratio of the transmission mechanism to directly correlate the axial displacement amount of the adjustment member 1 and the corresponding change amount of the tower volume.

[0038] The tower volume adjustment device of the carbon capture system according to the embodiment of the present invention is provided with an indicating disk with angle scales at the rotating end of the operating handle, which cooperates with a reference mark on the outer wall of the tower to form a volume indicating mechanism. The angle scales on the indicating disk are calibrated according to the transmission ratio of the transmission mechanism, which can intuitively reflect the relationship between the rotation angle of the operating handle and the axial displacement of the adjusting member. This means that the operator can very precisely adjust the effective volume of the tower according to actual needs to match different CO2 treatment amounts. In addition, through the intuitive scale display, the operator can easily complete the adjustment of the tower volume without relying on complex calculations or empirical judgments. This design greatly simplifies the operation process, reduces the possibility of human error, and improves work efficiency. Since the tower volume can be adjusted more accurately according to real-time processing requirements, unnecessary energy consumption and amine solution loss are avoided. This not only helps to reduce operating costs, but also improves the operating efficiency and stability of the entire carbon capture system. The indicating disk with scales makes the volume change obvious, facilitating the operator to monitor the working state of the tower at any time. At the same time, when maintenance is required, it is easier to determine the position of the adjusting member and its corresponding working parameters, thus providing convenience for equipment maintenance.

[0039] In summary, the tower volume adjustment device of the carbon capture system according to the embodiment of the present invention not only realizes the precise and convenient adjustment of the tower volume by introducing the volume indicating mechanism, but also significantly improves the operation simplicity, operating efficiency and maintenance convenience of the system, and further optimizes the overall performance of the carbon capture process.

[0040] Exemplarily, as Figure 1 shown, the transmission mechanism includes a transmission screw and a nut slider. The transmission screw is arranged along the axial direction of the tower. The first end of the transmission screw is fixed to the top wall of the tower, and the second end of the transmission screw extends out of the tower and is connected to the operating handle 4. The nut slider is sleeved on the transmission screw and is fixedly connected to the adjusting member 1.

[0041] The tower volume adjustment device of the carbon capture system according to the embodiment of the present invention uses a transmission screw and a nut slider as a transmission mechanism. Due to the precise fit between the transmission screw and the nut slider, the rotation of the operating handle can be accurately converted into the linear movement of the adjusting member along the axial direction of the tower. This design ensures a high degree of accuracy in adjusting the tower volume, can achieve fine adjustment according to actual needs, and thus better adapt to different CO2 processing capacities. In addition, the first end of the transmission screw is fixed to the top wall of the tower, providing a solid foundation support, making the entire adjustment device more stable and reliable during operation. At the same time, such a structure helps to reduce vibration or displacement caused by operation, ensuring the smoothness and consistency of the adjustment process. In addition, by using a simple and effective mechanical structure of the transmission screw and the nut slider, the system complexity is reduced, and the possibility of failure is lowered. Moreover, this design is convenient for manufacturing, installation and maintenance, helping to reduce the overall cost of the equipment. The transmission mechanism composed of the screw and the nut slider can achieve a large adjustment force output under a small operating force, improving the energy transfer efficiency. This not only makes the operation more labor-saving, but also ensures that the adjusting member can move axially smoothly even under high load conditions. Finally, combined with the above-mentioned design of the indicating disk with angle scales, the operator can intuitively understand the current state of the tower volume and the required adjustment amount through simple observation and rotation of the operating handle, greatly improving the convenience and accuracy of the operation.

[0042] In summary, the tower volume adjustment device of the carbon capture system according to the embodiment of the present invention, by introducing a transmission screw and a nut slider as a transmission mechanism, not only achieves high-precision adjustment of the tower volume, but also enhances the operation stability and reliability of the system, simplifies the mechanical structure, and improves the energy transfer efficiency, providing strong support for the optimized operation of the carbon capture system.

[0043] Exemplarily, a guide groove is arranged along the axial direction of the inner wall of the tower, and a guide key is arranged on the outer wall of the nut slider and is matched with the guide groove.

[0044] For the tower volume adjustment device of the carbon capture system according to the embodiment of the present invention, the design of the guide groove and the guide key ensures that the nut slider and the adjusting member connected thereto can perform accurate and stable linear movement along the axial direction of the tower. This precise guiding mechanism can effectively reduce the offset or tilt phenomenon of the adjusting member during movement, thus ensuring high-precision adjustment of the tower volume. In addition, by embedding the guide key into the guide groove, the structural rigidity and stability of the entire transmission mechanism are increased. This design helps to resist the lateral force or vibration that may occur during operation, ensuring the reliability of the equipment during long-term operation. The precise fit of the guide groove and the guide key not only improves the accuracy of movement, but also can effectively disperse the acting force, reducing the friction and wear between components. This extends the service life of related components, reducing the maintenance frequency and cost.

[0045] In summary, the tower volume adjustment device of the carbon capture system according to the embodiments of the present invention not only greatly improves the accuracy of the movement of the adjustment member and the stability of the structure by providing guide grooves on the inner wall of the tower and corresponding guide keys on the outer wall of the nut slider, but also effectively reduces wear, extends the service life of the equipment, and improves the smoothness of operation and the sealing performance, providing a solid foundation for the efficient and stable operation of the carbon capture system.

[0046] Exemplarily, as Figure 1 shown, the volume adjustment device further includes a displacement sensor (not shown in the figure). The displacement sensor is disposed on the nut slider to monitor the current position of the adjustment member 1 in real time.

[0047] The tower volume adjustment device of the carbon capture system according to the embodiments of the present invention can provide accurate data on the position of the adjustment member by adding a displacement sensor to the volume adjustment device to monitor the current position of the adjustment member in real time, enabling the system to perform more accurate volume adjustment according to actual needs. This high-precision real-time monitoring helps ensure that each adjustment can achieve the expected effect and improves the overall control accuracy. In addition, by monitoring the position of the adjustment member in real time, this data can be fed back to the control system, thereby realizing automatic adjustment of the tower volume. This automated operation not only reduces the need for manual intervention but also improves the response speed and efficiency, especially suitable for working environments that require frequent adjustment. Based on the real-time data provided by the displacement sensor, the system can more flexibly adjust operating parameters (such as amine solution volume, gas flow rate, etc.) to adapt to different processing requirements. This helps optimize the carbon capture process, reduce energy consumption and chemical losses, and enhance the economic and environmental performance of the system.

[0048] In summary, the tower volume adjustment device of the carbon capture system according to the embodiments of the present invention, by introducing a displacement sensor to monitor the current position of the adjustment member in real time, not only improves the control accuracy and automation level of the carbon capture system, but also helps optimize operating parameters, improve maintenance convenience, and enhance safety performance, providing strong support for realizing an efficient, stable, and environmentally friendly carbon capture process.

[0049] Exemplarily, as Figure 1 shown, the adjustment member 1 is made of a stainless steel disc, and the diameter of the disc matches the inner diameter of the tower. An air defense pipeline opening 2 is also provided on the adjustment member 1, and the sealing member 3 is made of a rubber ring.

[0050] The tower volume adjustment device of the carbon capture system according to the embodiment of the present invention uses a stainless-steel disc as the adjustment part. Stainless steel has excellent corrosion resistance and can work stably for a long time in an environment containing chemical substances such as amine solution. This not only extends the service life of the adjustment part but also reduces the maintenance and replacement frequency caused by corrosion. By using a rubber ring as the seal, it can ensure a good dynamic seal between the adjustment part and the inner wall of the tower. The rubber material has good elasticity and wear resistance, can adapt to the small deformation generated during the axial movement of the adjustment part while ensuring the sealing effect, and effectively prevents the leakage of amine solution or the entry of external impurities into the system. The diameter of the stainless-steel disc matches the inner diameter of the tower, which means that the adjustment part can closely fit the inner wall of the tower, minimizing the ineffective space and thus achieving precise control of the tower volume. This design helps to improve the operating efficiency of the entire system and ensure that each adjustment can achieve the expected effect.

[0051] Further, the tower volume adjustment device of the carbon capture system according to the embodiment of the present invention can flexibly adjust the pressure distribution inside the tower through the provided air defense pipeline opening, which is crucial for maintaining the stable operation of the system. For example, during the volume adjustment process, gas can be released or introduced through this opening to balance the internal and external pressure differences and avoid damage to the equipment caused by sudden pressure changes.

[0052] Based on the same inventive concept, the embodiment of the present invention also provides a carbon capture system, which includes the volume adjustment device described above. The specific structure of this volume adjustment device can refer to the above description and will not be elaborated here.

[0053] The carbon capture system according to the embodiment of the present invention has the tower volume adjustment device described above. By using an axially movable adjustment part and using a seal to ensure the dynamic seal between the outer edge of the adjustment part and the inner wall of the tower, it can flexibly adjust the tower volume according to actual needs. This reduces the exposure area and time of the amine solution in the system, thereby reducing the risk of system corrosion and the volatilization and escape of the amine solution. In addition, this device allows operators to drive the transmission mechanism with an operating handle to adjust the effective volume of the tower according to the actual processing volume requirements. This ability to adjust as needed means that when the processing volume is low, there is no need to maintain the high-load operation state of all equipment, thus effectively reducing unnecessary energy consumption. Since the tower volume can be precisely controlled, the amine solution storage in the absorption tower and the regeneration tower can be adjusted according to actual needs, avoiding the additional thermal degradation, volatilization loss, and corresponding energy consumption caused by a high amine solution storage. This not only improves the utilization rate of the amine solution but also further reduces the energy consumption of the entire system.

[0054] It is understandable that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A tower volume adjustment device for a carbon capture system, characterized in that, The volume adjustment device includes: An axially movable adjustment member, the outer edge of the adjustment member forms a dynamic seal with the inner wall of the tower through a seal; A transmission mechanism, the first end of the transmission mechanism is connected to the adjustment member, and the second end of the transmission mechanism extends outside the tower; An operating handle, the operating handle is connected to the second end of the transmission mechanism, and the operating handle drives the transmission mechanism to drive the adjustment member to move axially along the tower to adjust the volume of the tower.

2. The carbon capture system tower volume adjustment device according to claim 1, wherein A reference mark is provided on the outer wall of the tower, and an indicating disk with an angular scale is provided at the rotating end of the operating handle. The indicating disk and the reference mark on the outer wall of the tower cooperate to form a volume indicating mechanism; wherein, The scale value of the indicating disk is calibrated according to the transmission ratio of the transmission mechanism to directly relate the axial displacement of the adjustment member and the corresponding change in the volume of the tower.

3. The carbon capture system tower volume adjustment device according to claim 1, wherein The transmission mechanism includes a transmission screw and a nut slider; The transmission screw is arranged axially along the tower, the first end of the transmission screw is fixed to the top wall of the tower, and the second end of the transmission screw extends outside the tower and is connected to the operating handle; The nut slider is sleeved on the transmission screw and is fixedly connected to the adjustment member.

4. The carbon capture system tower volume adjustment device according to claim 3, wherein A guide groove is arranged axially along the inner wall of the tower, and a guide key is arranged on the outer wall of the nut slider to cooperate with the guide groove.

5. The carbon capture system tower volume adjustment device according to claim 3, characterized in that, The volume adjustment device further includes a displacement sensor; The displacement sensor is arranged on the nut slider to monitor the current position of the adjustment member in real time.

6. The carbon capture system tower volume adjustment device according to any one of claims 1 to 5, characterized in that, The adjustment member is made of a stainless steel disk.

7. The carbon capture system tower volume adjustment device according to any one of claims 1 to 5, characterized in that, An air defense pipeline opening is further provided on the adjustment member.

8. The carbon capture system tower volume adjustment device according to any one of claims 1 to 5, characterized in that, The seal is made of a rubber ring.

9. The carbon capture system tower volume adjustment device according to any one of claims 1 to 5, characterized in that, The diameter of the adjustment member matches the inner diameter of the tower.

10. A carbon capture system, characterized in that, The carbon capture system includes the volume adjustment device according to any one of claims 1 to 9.

Images