Concrete cylinder support structure and integrated water washing absorption column tower

Abstract

The application discloses a concrete cylinder support structure and an integrated water washing and absorption tower, and belongs to the field of chemical engineering equipment. The concrete cylinder support structure and the integrated water washing and absorption tower are characterized by comprising a concrete circular cylinder which constitutes a load-bearing and enclosure structure of the tower; the concrete circular cylinder comprises a ring-shaped shear wall, concrete frame columns and concrete ring beams, wherein the concrete frame columns are uniformly and vertically arranged along the circumference of the ring-shaped shear wall; the concrete ring beams are arranged at intervals along the height direction of the ring-shaped shear wall, and the arrangement positions of the concrete ring beams correspond to the arrangement heights of the filler layers in the tower; and a concrete ring corbel extending from the inner wall of the ring-shaped shear wall towards the center of the ring-shaped shear wall along the radial direction of the ring-shaped shear wall is further arranged on the inner wall of the ring-shaped shear wall, and the concrete ring corbel is configured to support a beam component for supporting filler equipment. The tower adopts the concrete circular cylinder as a load-bearing and enclosure main body of the combined water washing tower and absorption tower, realizes the large-scale and high-rise of the tower, reduces the land occupation, and lowers the cost.

Description

Technical Field

[0001] This application relates to the technical field of water washing towers and absorption towers, and particularly to concrete cylinder support structures and integrated water washing absorption tower equipment. Background Technology

[0002] With economic development and increased attention to climate change, CCUS (carbon capture, utilization, and storage) has seen rapid growth in existing coal-fired power plants. However, the overall layout of CCUS projects in existing coal-fired power plants is often constrained by site limitations, making it impossible to design separate washing towers and absorption towers as is common practice. In China, existing coal-fired power plants primarily use freestanding metal towers for CO2 capture, with concrete towers being rarely used. Combining the washing / absorption tower into one unit results in a large tower volume, significant height, and heavy loads on the internal packing and piping, making the traditional freestanding metal tower unsuitable.

[0003] In carbon dioxide projects, the absorption tower is the core equipment for achieving carbon dioxide separation and capture, while the water washing tower is a key auxiliary equipment to ensure the efficient operation of the absorption tower and improve the purity of the captured carbon dioxide. The two work together to ensure the accurate separation of high-purity carbon dioxide from industrial flue gas, while reducing system energy consumption and equipment corrosion risks. Currently, the absorption tower and water washing tower are generally arranged independently, using traditional freestanding metal towers.

[0004] In the current thermal power industry, absorption towers and washing towers are generally arranged independently, using traditional self-supporting metal towers. The disadvantages of this approach are: 1) Independent arrangement of the absorption tower and washing tower occupies space, increasing the project's land area; 2) The height of the independent self-supporting design of the absorption tower and washing tower is limited, typically within 50 meters; 3) The independent self-supporting design of the absorption tower and washing tower requires thicker tower walls; 4) When the absorption tower and washing tower are arranged independently, the cost of installing pipe supports increases.

[0005] Therefore, there is an urgent need in this field to develop a concrete cylindrical support structure and an integrated water washing and absorption tower. This tower combines the water washing tower and the absorption tower into one, and uses a concrete cylindrical body as the main load-bearing and enclosure body for the combined water washing tower and absorption tower, thereby achieving a larger and taller tower, reducing land use, and lowering the overall project investment. Summary of the Invention

[0006] The purpose of this application is to provide a concrete cylindrical support structure and an integrated water washing and absorption tower, which combines the water washing tower and the absorption tower into one, and uses a concrete cylindrical body as the main load-bearing and enclosure body of the combined water washing tower and absorption tower, thereby realizing the large size and height of the tower, reducing land use, and lowering the overall project investment.

[0007] This application provides a concrete cylinder support structure for a water washing absorption tower, comprising: A concrete cylindrical body forms the load-bearing and enclosure structure of the tower, and the water washing and absorption functional areas are arranged together inside the tower. The concrete cylindrical body includes an annular shear wall, concrete frame columns, and concrete ring beams, wherein the concrete frame columns are uniformly and vertically arranged along the circumference of the annular shear wall and connected to the annular shear wall. The concrete ring beams are spaced apart along the height direction of the annular shear wall, and the positions of the concrete ring beams correspond to the arrangement height of the packing layer inside the tower. On the inner wall of the annular shear wall, a concrete annular bracket is also provided, extending from the inner wall of the annular shear wall along the radial direction of the annular shear wall toward the center of the annular shear wall. The concrete annular bracket is configured as a stainless steel support beam to support the packing material inside the tower. The concrete annular brackets are spaced apart along the height direction of the annular shear wall, and the position of the concrete annular bracket is at the same height as the concrete ring beam.

[0008] In another preferred embodiment, the water-washing absorber is used for carbon capture.

[0009] In another preferred embodiment, the annular shear wall, concrete frame column, concrete ring beam, and concrete annular corbel are formed together by integral concrete casting.

[0010] In another preferred embodiment, the concrete annular corbel is pre-embedded with connectors for fixed connection with the beam member.

[0011] In another preferred embodiment, the cross-section of the concrete frame column is square or circular.

[0012] In another preferred embodiment, the number of concrete frame columns is 6-10, preferably 8.

[0013] In another preferred embodiment, the concrete ring beam is a concealed beam, and its width is the same as the thickness of the annular shear wall.

[0014] In another preferred embodiment, the concealed beam surrounds the annular shear wall and is integrally cast with the annular shear wall, the concrete annular corbel at the height of the concealed beam, and the concrete frame column.

[0015] In another preferred embodiment, the height of the concrete cylindrical body is between 50m and 100m.

[0016] In another preferred embodiment, the concrete cylindrical body has 5-9 layers, each layer corresponding to a filling section, and the height of each layer is between 8-20m.

[0017] In another preferred embodiment, the structural stiffness-to-weight ratio of the concrete cylindrical body is between 20 and 25.

[0018] In another preferred embodiment, the inner wall of the annular shear wall is covered with a corrosion-resistant and seepage-proof sealed lining.

[0019] In another preferred embodiment, the enclosed liner is a fiberglass liner or a metal alloy liner.

[0020] This application also provides an integrated water washing absorption tower, including the above-mentioned concrete cylinder support structure, a packing layer disposed within the concrete cylinder support structure, and a stainless steel support beam for the packing.

[0021] It should be understood that, within the scope of this invention, the above-described technical features of this invention and the technical features specifically described below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. It should be understood that the accompanying drawings described below are merely some implementation examples of the present invention, and those skilled in the art can obtain other implementation examples based on these drawings without creative effort.

[0023] Figure 1 This is a plan view of an integrated water washing absorption tower according to an embodiment of this application; Figure 2 This is a schematic elevation view of an integrated water washing absorption tower according to an embodiment of this application; Figure 3 The summary results of the overall structural parameters of the water washing absorption tower according to Embodiment 1 of this application are shown.

[0024] In each of the attached figures, the markings are as follows: 1- Circular shear wall 2-Concrete frame columns 3-Concrete ring beam 4- Concrete ring bracket Detailed Implementation

[0025] Through extensive and in-depth research, the inventors have developed for the first time a concrete cylindrical support structure and an integrated water washing absorption tower. This tower utilizes a concrete circular cylindrical structure, integrating the water washing tower and absorption tower into a single structure, replacing the traditional metal tower structure. Its robust load-bearing system supports the loads of the packing material, piping, internal pressure, and operating temperature within the tower, forming a highly efficient and stable integrated packing tower support structure. This structural system eliminates the reliance of the packing material and piping loads on the metal tower walls. Instead, the loads of each packing layer are supported by internal components on the concrete annular corbels of the cylindrical wall. Piping loads act directly on this concrete support structure, effectively increasing the tower height and freeing the tower capacity from the load-bearing capacity of a self-supporting metal tower wall, thus reducing project land use and investment.

[0026] In the following description, many technical details are presented to help the reader better understand this application. However, those skilled in the art will understand that the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0027] the term Water washing / absorption tower combined: A device that uses physical and chemical treatment methods to remove sulfur dioxide (SO2) and solid dust particles from flue gas simultaneously.

[0028] Concrete core support structure system: a structural system in which the core bears wind loads and seismic forces.

[0029] Circular shear wall: It is made of reinforced concrete and has the functions of load-bearing, resisting lateral forces and enclosure. The wall is closed in a ring shape and is mainly subjected to circumferential forces.

[0030] Horizontal reinforcement of shear wall: The horizontal reinforcement of the wall body must pass through the hidden beam and be anchored into the column.

[0031] Vertical reinforcement in shear walls: The vertical reinforcement in the wall body serves to bear the vertical load and restrain the concrete.

[0032] Hidden beams: concealed within the wall, with the same thickness as the wall and not exposed.

[0033] Frame columns: vertical load-bearing components that transmit vertical loads and horizontal forces.

[0034] Anchorage length: The length by which the reinforcing steel bar reaches the design stress resistance by relying on the bonding between its surface and the concrete or the compression effect of the end structure.

[0035] As used in this article, the terms “layer” and “floor” are used interchangeably; As used in this article, the terms “X direction” and “X direction” are used interchangeably, with “X direction” referring to the horizontal direction; As used in this article, the terms “Y-direction” and “Y direction” are used interchangeably. “Y direction” refers to the vertical direction, which is perpendicular to the “horizontal direction”.

[0036] In this invention, all directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] This application has at least one of the following advantages: (a) The integrated water washing absorption tower of this application combines the water washing tower and the absorption tower in a single concrete cylinder, which greatly reduces the equipment footprint and solves the problem of limited space in existing power plant CCUS projects.

[0038] (b) The integrated water washing absorption tower of this application breaks through the height limit through the concrete cylinder support structure. Since the load is borne by the solid concrete cylinder rather than by the metal wall panels of the tower itself, the total height of the tower can be significantly increased (e.g., 90 meters), thereby greatly increasing the single tower processing capacity and meeting the needs of large-scale carbon capture. (c) The integrated water washing absorption tower of this application uses a concrete cylinder as a support structure, which has high load-bearing efficiency and can replace the heavy self-supporting metal tower wall. The pipeline load is directly borne by the concrete structure, saving a large number of independent pipeline supports and reducing the amount of steel used and construction costs. (d) The integrated water washing absorption tower of this application has good fire resistance and durability. Combined with the internal closed anti-corrosion lining, the overall structure has a long service life and relatively low maintenance cost.

[0039] To make the objectives, technical solutions, and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that these are merely examples provided to the reader of possible implementations of the present invention and are not intended to limit the scope of the invention.

[0040] See Figures 1-2 This application provides a concrete cylinder support structure for a water washing absorption tower, comprising: A concrete cylindrical body forms the load-bearing and enclosure structure of the tower, and the water washing and absorption functional areas are arranged together inside the tower. The concrete cylindrical body includes an annular shear wall 1, concrete frame columns 2, and concrete ring beams 3. The concrete frame columns 2 are uniformly and vertically arranged along the circumference of the annular shear wall 1 and are connected to the annular shear wall 1. Concrete ring beams 3 are spaced along the height of the annular shear wall 1, and the location of the concrete ring beams 3 corresponds to the arrangement height of the packing layer inside the tower. On the inner wall of the annular shear wall 1, a concrete annular bracket 4 is also provided, extending from the inner wall of the annular shear wall 1 along the radial direction of the annular shear wall 1 toward the center of the annular shear wall 1. The concrete annular bracket 4 is configured to support the beam member used to support the filling equipment. The concrete annular bracket 4 is spaced apart along the height direction of the annular shear wall 1, and the position of the concrete annular bracket 4 is at the same height as the concrete ring beam 3.

[0041] In one embodiment, the water-washing absorber is used for carbon capture.

[0042] In one embodiment, the cross-section of the concrete frame column 2 is square or circular. In one embodiment, the number of concrete columns 2 is 6-10, preferably 8.

[0043] In one embodiment, the annular shear wall 1 constitutes the main enclosure and lateral force resisting wall of the cylinder, forming a closed ring to primarily withstand circumferential forces. Concrete frame columns 2 are evenly and vertically arranged along the circumference of the annular shear wall 1 (e.g., 8 square columns) and reliably connected to the shear wall 1, together forming a frame-shear wall lateral force resisting system, greatly enhancing the overall stiffness. Concrete ring beams 3 are spaced along the height direction on the inner side of the annular shear wall 1. In this embodiment, the ring beam 3 is a concealed beam, its width being the same as the thickness of the shear wall, encircling the shear wall and integrally cast. Its placement precisely corresponds to the arrangement height of the packing layer inside the tower, playing a role in strengthening circumferential stiffness and coordinating structural stress.

[0044] On the inner wall of the annular shear wall 1, at the same height of each concrete ring beam 3, a concrete annular corbel 4 is provided. This concrete annular corbel extends radially from the inner wall of the annular shear wall towards the center of the cylinder, and is used to support the steel beam components that support the filling equipment (such as filling support grids). Preferably, steel plates or other connecting parts are pre-embedded in the corbel 4 for fixing to the upper steel beam. The annular shear wall 1, concrete frame columns 2, concrete ring beams 3, and concrete annular corbel 4 are preferably formed by a single integral casting to ensure structural integrity.

[0045] In one embodiment, the height of the concrete cylindrical body is between 50m and 100m.

[0046] In one embodiment, the concrete cylindrical body has 5-9 layers, each layer corresponding to a filling section (functional section or level), and the height of each layer is between 8-20m.

[0047] In one embodiment, the inner wall of the annular shear wall 1 is covered with a corrosion-resistant and seepage-proof sealed lining. That is, a sealed lining is installed inside the concrete cylinder to prevent flue gas inside the tower from penetrating and corroding the external concrete and reinforcing steel. Preferably, the sealed lining is a fiberglass lining or a metal alloy lining.

[0048] Reinforced concrete cylindrical structure In one embodiment, to achieve the integrity of the concrete cylindrical body and ensure the coordinated stress distribution of the annular shear wall 1, the hidden beam (i.e., the concrete ring beam 3), and the concrete frame column 2, the internal reinforcement configuration follows the following structural requirements: Connection between the ring shear wall and the hidden beam: The circumferential horizontal reinforcement of the shear wall extends through the entire section of the concealed beam and must not be cut off. It is arranged at intervals with the stirrups of the concealed beam. The upper and lower longitudinal reinforcement of the concealed beam extends through the entire section of the shear wall and is placed inside the vertical reinforcement of the shear wall. The stirrups of the concealed beam cover the area of ​​the shear wall and are coordinated with the horizontal reinforcement of the shear wall without conflict.

[0049] Connection between concealed beams and frame columns: When encountering a column, the longitudinal reinforcement of the circumferential concealed beam should be continuously wrapped around the column. If it cannot be wrapped around, both ends should be anchored into the column, and the length should meet the seismic anchorage length. The longitudinal reinforcement of the concealed beam is located inside the longitudinal reinforcement of the column. The stirrups of the concealed beam in the node area are fully continuous and superimposed with the dense stirrups of the column node.

[0050] Circular shear wall and frame column: The circumferential horizontal reinforcement of the circular shear wall is preferably continuous around the column. If it cannot be continuous, both ends are anchored into the column, and the length meets the seismic anchorage length. The vertical reinforcement of the circular shear wall can be continuous when it encounters the column, and is staggered from the longitudinal reinforcement of the column.

[0051] Reinforcement arrangement at the core node where the ring shear wall, frame column, and hidden beam intersect: (1) Layered reinforcement: the outermost longitudinal reinforcement of the frame column - the middle longitudinal reinforcement of the hidden beam - the inner side of the horizontal reinforcement of the ring shear wall; (2) The longitudinal reinforcement of the hidden beam is anchored into the column; the horizontal reinforcement of the ring shear wall passes through the hidden beam and is anchored into the column.

[0052] This arrangement ensures a clear spatial relationship between the reinforcing bars in the node area, a well-defined force transmission path, and guarantees the compactness of the concrete pouring.

[0053] With the structural form of the concrete cylinder support structure of this application, the filling material of each layer inside the tower is supported on the concrete annular bracket 4 of the cylinder wall by internal components. The pipeline load is directly applied to the concrete support structure system, which can increase the height of the tower and make the capacity of the tower no longer limited by the bearing capacity of the self-supporting metal tower wall. The operating temperature load and internal pressure inside the tower are borne by the concrete cylinder wall.

[0054] Example 1 To verify the safety, reliability, and technical advantages of the concrete cylinder support structure system of this invention, an integrated water washing absorption tower planned for a carbon capture project is used as an example for design. The tower has a total height of 94.8 meters and is equipped with 7 functional sections along its height (corresponding to the packing layer and equipment layout).

[0055] Using structural design software, a complete three-dimensional finite element analysis was performed on the reinforced concrete tube support structure (including ring shear wall 1, reinforced concrete frame columns 2, reinforced concrete ring beam 3, and reinforced concrete ring corbel 4). The structural system is a frame-shear wall structure, with a seismic fortification intensity of 7 degrees (0.1g) and a site category of IV. The main design calculation results are summarized below: See Figure 3 , Figure 3 The summary results of the overall structural indicators are shown. The total mass of the structure is 15,015 tons, indicating that the structure has sufficient self-weight to resist overturning. The first translational natural vibration period T1 of the structure is 1.09 seconds, and the first torsional period T3 is 0.33 seconds. The period ratio (T3 / T1=0.30) is much smaller than the code limit of 0.9, indicating that the structure has high torsional stiffness and the torsional effect is not obvious.

[0056] Stiffness and deformation: Under wind load and seismic action, the maximum inter-story drift angles in the X and Y directions of the structure are 1 / 9999 and 1 / 2540, respectively, which are much smaller than the limit of 1 / 800 for frame-shear wall structures in the "Technical Specification for Concrete Structures of High-Rise Buildings" (JGJ 3-2010), proving that the structure has extremely high lateral stiffness and excellent deformation control capability.

[0057] Overall stability: The stiffness-to-weight ratio (EJd / GH) of the concrete cylinder support structure in this application in the X and Y directions 2 The calculated values ​​are all 22.24 (seismic load case), which is much greater than the lower limit of stability verification of 1.4 stipulated in the Code for High-Rise Buildings, and also greater than the limit of 2.7 for exemption from considering the second-order effect of gravity, indicating that the overall stability of the structure is very sufficient.

[0058] Bearing and regularity: 1) Floor bearing capacity: See Table 1. The minimum ratio of the floor shear bearing capacity to the adjacent upper floor is 0.97, which is greater than the limit of 0.8. There are no sudden changes in floor bearing capacity.

[0059] 2) Lateral stiffness regularity: The ratio of the lateral stiffness of each floor to that of the adjacent upper floor meets the code requirements. The minimum stiffness ratio in the X and Y directions is 1.00, indicating that the lateral stiffness of the structure does not change abruptly in the vertical direction and belongs to a regular structure.

[0060] 3) Regarding the regularity of reversal: See Figure 3The structural torsional effect, under the specified horizontal seismic force considering accidental eccentricity, has a maximum displacement / average displacement ratio of 1.02 and a maximum inter-story displacement / average inter-story displacement ratio of 1.01, which is less than the limit of 1.5 for torsional irregularity.

[0061] In summary, the concrete tube support structure of this application does not contain any irregularities listed in the "Code for Seismic Design of Buildings". Shear force and comfort: The minimum seismic shear force coefficient in the Y direction of the structure is 5.14%, which meets the code requirement of greater than 2.08%. The maximum wind-induced comfort level is 0.012 m / s². 2 It meets the comfort requirements.

[0062] The above calculation results demonstrate that the concrete cylinder support structure of this application can safely and reliably achieve the integrated tower design with a height of approximately 95 meters and a large capacity. The loads of the filling material in each layer of the tower are supported by internal components on the concrete annular corbel 4 of the cylinder wall, while the pipe loads act directly on the concrete support structure system, allowing the tower capacity to completely break through the load-bearing capacity limitations of traditional metal self-supporting towers. All calculation results meet the relevant current national design specifications, fully verifying the technical advantages and engineering feasibility of the structural system of this invention in achieving large-scale and tall tower construction.

[0063] It should be noted that in this patent application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to an element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

[0064] All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they can serve as a basis for modifications if necessary. Furthermore, it should be understood that after reading the foregoing disclosure of this application, those skilled in the art can make various alterations or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A concrete cylinder support structure for a water washing absorption tower, characterized in that, include: A concrete cylindrical body forms the load-bearing and enclosure structure of the tower, and the water washing and absorption functional areas are arranged together inside the tower. The concrete cylindrical body includes an annular shear wall, concrete frame columns, and concrete ring beams, wherein the concrete frame columns are uniformly and vertically arranged along the circumference of the annular shear wall and connected to the annular shear wall. The concrete ring beams are spaced apart along the height direction of the annular shear wall, and the positions of the concrete ring beams correspond to the arrangement height of the packing layer inside the tower. On the inner wall of the annular shear wall, a concrete annular bracket is also provided, extending from the inner wall of the annular shear wall along the radial direction of the annular shear wall toward the center of the annular shear wall. The concrete annular bracket is configured as a stainless steel support beam to support the packing material inside the tower. The concrete annular brackets are spaced apart along the height direction of the annular shear wall, and the position of the concrete annular bracket is at the same height as the concrete ring beam.

2. The concrete cylinder support structure as described in claim 1, characterized in that, The annular shear wall, concrete frame columns, concrete ring beams, and concrete annular corbels are formed together by integral concrete casting.

3. The concrete cylinder support structure as described in claim 1, characterized in that, The concrete annular corbel has pre-embedded connectors for fixed connection with the beam component.

4. The concrete cylinder support structure as described in claim 1, characterized in that, The concrete ring beam is a concealed beam, and its width is the same as the thickness of the annular shear wall.

5. The concrete cylinder support structure as described in claim 4, characterized in that, The hidden beam surrounds the annular shear wall and is integrally cast with the annular shear wall, the concrete annular corbel at the height of the hidden beam, and the concrete frame column.

6. The concrete cylinder support structure as described in claim 1, characterized in that, The height of the concrete cylindrical body is between 50m and 100m.

7. The concrete cylinder support structure as described in claim 8, characterized in that, The concrete cylindrical body has 5-9 layers, each layer corresponding to a filling section, and the height of each layer is between 8-20m.

8. The concrete cylinder support structure as described in claim 9, characterized in that, The structural stiffness-to-weight ratio of the concrete cylindrical body is between 20 and 25 kN / m.

9. The concrete cylinder support structure as described in claim 1, characterized in that, The inner wall of the annular shear wall is covered with a closed lining that is corrosion-resistant and seepage-proof.

10. An integrated water washing absorption tower, characterized in that, It includes a concrete cylinder support structure as described in any one of claims 1-9, a filler layer disposed within the concrete cylinder support structure, and a stainless steel support beam for the filler.

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