Ultra-large type compact CO2 separation equipment

Abstract

The invention discloses ultra-large and compact CO2 separation equipment which comprises a shell, a stand column arranged on the lower side of the shell and used for integrally supporting the equipment and a conical shell arranged on the upper side of the shell and used for being connected with a flue gas outlet. The cross section of the shell is rectangular, a plurality of longitudinal reinforcing ribs are arranged on the outer side wall of the shell at intervals, the longitudinal reinforcing ribs and the stand columns jointly bear loads of the shell and internal media, and a plurality of reinforcing ring structures are further arranged on the outer side wall of the shell in the height direction of the shell at intervals. The rectangular-section shell design is adopted, a three-dimensional supporting system with the longitudinal reinforcing ribs and the double-layer reinforcing rings is matched, the core problem of ultra-large equipment is effectively solved, the longitudinal reinforcing ribs and the stand columns cooperatively bear the shell and internal medium loads, and vertical stress is dispersed; the double-layer reinforcing ring can restrain deformation of the tower wall caused by internal pressure, liquid column static pressure and wind load, and insufficient rigidity or cracking of the wall plate is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carbon capture, in particular to a super-large and compact CO2 separation equipment. BACKGROUND

[0002] The cross section of the traditional tower type equipment in a chemical plant is usually circular, the cylinder part adopts plate winding or cylindrical forgings, and the two ends are provided with oval or hemispherical heads. This structure is uniformly stressed and has strong bearing capacity under the action of various external loads such as internal pressure, temperature, wind, etc.

[0003] A carbon dioxide separation and purification process with publication number CN116492813A includes the following steps: carbon dioxide separation: pass the mixed gas into the exchange box, put the appropriate amount of organic solvent in the exchange box, use the pressure and temperature between the alternating carbon dioxide and the organic solvent to absorb carbon dioxide, thereby separating carbon dioxide.

[0004] Publication number CN111659152B discloses a novel rectifying tower partition plate flow guide device, which comprises a rectifying tower body, a rectifying tower base, a rectifying tower head, a rectifying tower body, and a packing zone. The packing zone is provided with a packing support, and the packing support is provided with a packing cavity above it. The upper and lower sides of the packing cavity are provided with mesh screens, namely upper and lower mesh screens.

[0005] However, with the increase in device processing capacity in recent years, the cross-sectional size of the equipment has been increased by 3-4 times compared to the past. For example, the diameter of the existing single-line small-scale processing equipment is 15.7m, and the diameter of the equipment at full flow will exceed 20.0m. At this diameter, the use of traditional circular cross-section towers will have the following problems: 1. When the cylinder is thin, the wall plate itself is not rigid enough; 2. At the same height-diameter ratio, the larger the diameter of the tower, the higher the height, and the more difficult it is to manufacture on site; 3. The deformation of the middle support span is large due to different internal support spans of the same cross section. SUMMARY

[0006] (I) Technical problems solved The purpose of the present application is to provide a super-large and compact CO2 separation equipment to solve the above problems.

[0007] (II) Technical solutions To achieve the above purpose, the present application provides the following technical solutions: The present application provides a super-large and compact CO2 separation equipment, which comprises a shell, a stand column arranged on the lower side of the shell for overall support of the equipment, and a conical shell arranged on the upper side of the shell for connection with a flue gas outlet. The cross-sectional shape of the shell is rectangular, and the outer side wall of the shell is provided with a plurality of longitudinal reinforcing ribs at intervals, which bear the load of the shell and the internal medium together with the columns.

[0008] The outer side wall of the shell is also provided with a plurality of reinforcing ring structures along its height direction, which include inner and outer reinforcing rings distributed inside and outside, and a plurality of connecting members connected between the inner and outer reinforcing rings.

[0009] Further, the inner reinforcing ring is arranged in close contact with the outer side wall of the shell, and the two ends of the connecting member are fixedly connected with the inner reinforcing ring and the outer reinforcing ring respectively, so that the inner reinforcing ring and the outer reinforcing ring form a combined stress structure, and the upper surfaces of the inner reinforcing ring and the outer reinforcing ring are paved with a grid plate.

[0010] Further, the inside of the shell is divided into at least three independent functional areas by a partition plate and a support beam along its height direction, which are in turn a purification area, a separation area and a cooling area from top to bottom, and the support beam and the shell are connected with each other through a support connection structure, and the partition plate is provided with a gas lifting channel for upward gas flow and liquid phase flow blocking.

[0011] Further, the support connection structure includes an inner tower part structure and an outer tower part structure. The inner tower part structure includes a mounting support fixed to the inner side wall of the shell, and the end of the support beam is arranged on the mounting support; The outer tower part includes an extension rod, a triangular plate, a pull rod and a tension sensor, one end of the extension rod is connected with the mounting support and the other end extends out of the outer side wall of the shell, the triangular plate is fixed to the extension rod extension end, one end of the pull rod is hinged with the triangular plate, and the tension sensor is connected in series on the pull rod for real-time monitoring of the tension value borne by the pull rod.

[0012] Further, the conical shell adopts a trapezoidal transition section structure, the large end of the trapezoidal transition section is sealingly connected with the top port of the shell, and the small end of the trapezoidal transition section is provided with a flange of a flue gas outlet.

[0013] Further, the thickness of the four side plates of the shell gradually increases along the direction to the four corners.

[0014] Further, the outer side of the shell is provided with four columns distributed in a rectangular array with the shell as the center, and the four columns are respectively arranged at the corner positions of the shell, the lower end of the column and the column are fixed on the base, the upper end of the column is provided with an upper connecting plate, and a plurality of online monitoring systems for detecting the deformation of the corners and side plates of the shell are arranged on the column.

[0015] Further, the outer reinforcing ring is fixed with supporting ears and detachably provided with movable clamping blocks, the supporting ears are four in number and are spaced apart along the circumference of the outer reinforcing ring, the movable clamping blocks are detachably connected with the supporting ears through bolts, and the supporting ears and the movable clamping blocks are matched with each other for clamping and fixing the vertical rods.

[0016] Further, the online monitoring system comprises a hanging piece, one end of the hanging piece is slidably sleeved on the vertical rod in the up-down direction, the other end of the hanging piece is fixedly provided with a hydraulic cylinder, the head end of the push rod of the hydraulic cylinder is provided with an angle abutting block, and a pressure sensor is arranged between the head end of the push rod of the hydraulic cylinder and the angle abutting block.

[0017] In addition, the application also provides a manufacturing method of the super-large and compact CO2 separation equipment, comprising the following steps: S1, the whole equipment is divided into 1 tower body bottom section, several standard sections and 1 trapezoidal transition section, the geometric size of each section is controlled within 10m, wherein the tower body bottom section is combined on the installation foundation in a site combination manner, and is not hoisted integrally; S2, shell plate processing; Blanking: high-precision flat plate processing equipment is used to cut the shell plates, the flatness of the equipment cutter and the cutting parameters are calibrated in real time during the processing, after each plate is processed, a laser flatness detector is used for detection to ensure that the flatness deviation of the plate is not more than ±0.5mm, and the plates are uniformly stressed when stacked to avoid deformation; Bending: according to the material and thickness of the plate, the bending process is pre-performed through a computer simulation software to determine the radius and angle parameters of the bending die, a numerical control bending machine is used for bending the plate, the bending angle and pressure are monitored in real time to ensure that the bending angle error is controlled within ±0.5°, and after bending, the angle is detected and corrected through an angle measuring instrument; Splicing: the plates to be spliced are fixed by using longitudinal and transverse reinforcement fixtures, the relative positions of the plates are adjusted, the fixtures are locked, and the splicing seams of the plates are welded, and after welding, the welding stress is eliminated by using vibration aging or heat treatment; S3, in the prefabrication site, the longitudinal reinforcing bars are fixedly connected with the inner reinforcing rings through the positioning holes reserved on the reinforcing ring structure, the frame is erected based on the external design size of the shell, the frame size is detected by using a range finder, and at least two layers of reinforcing ring structures are arranged on each standard section; The outer reinforcing ring and the connecting piece are installed, high-strength bolts are used for connection, the high-strength bolts are inspected before installation to ensure that the friction surfaces are flat and dry, the high-strength bolts are preliminarily tightened and finally tightened from the middle to the two ends, the preliminary tightening torque is 50%-60% of the final tightening torque, the bolt torque value is detected after final tightening, and the plate joint is closed after the bolt tightening is checked and qualified; The plate of the installation shell is connected with the support connection structure, the plates are assembled block by block and layer by layer according to the number, the rectangular cross-section anti-deformation tool is installed after the size is confirmed, and then the plates are welded and fixed with the longitudinal stiffener and the inner reinforcing ring; S4, the standard segmented components and the trapezoidal transition section are accepted, and after being qualified, the support beams inside the components are used as lifting points for lifting; Before high-altitude closing and aligning, a temporary tool is installed at the interface position of the longitudinal stiffener and the stand column to assist in adjusting the closing and aligning accuracy; the main fixing points are installed at the port of the previous section of the tower body and the vertical structure connection according to the marking line positioning; The segmented sections to be aligned are hoisted to a predetermined height, the hoist of the crane is not loosened, the levelness and coaxiality of the segmented sections are adjusted through the chain hoist and the temporary tool, and after positioning is completed, the butt joint weld of the longitudinal stiffener and the ring weld of the plate port are immediately welded; After the in-air alignment of all the standard segmented sections and the trapezoidal transition sections is sequentially completed, internal operations are carried out, the inner piece support, the feed distributor, the wire mesh demister and the filler are installed, after completion, the weld of the shell is detected for kerosene leakage, the inside of the equipment is tested for water filling leakage, and after the test is qualified, the equipment manufacturing is completed.

[0018] (Three) beneficial effects Compared with the prior art, the beneficial effects of the present application are: 1. Compared with the traditional circular cross-section tower, the present application adopts a rectangular cross-section shell design, cooperates with a three-dimensional support system of longitudinal stiffeners and double-layer reinforcing rings, effectively solves the core problem of super-large equipment, the longitudinal stiffeners and the stand column cooperatively bear the shell and the internal medium load, and disperse the vertical stress; the double-layer reinforcing ring can constrain the deformation of the tower wall caused by internal pressure, liquid column static pressure and wind load, and avoid insufficient rigidity or cracking of the wall plate; 2. The thickness of the four corners of the shell gradually increases, cooperates with the external stand column and the online monitoring system, monitors the deformation of the shell online, relieves the stress concentration of the rectangular cross-section corner, significantly improves the overall structural stability, and can adapt to the application requirements of super-large scale after the processing capacity is doubled; 3. The segmented precast design is adopted, the equipment is divided into a tower body bottom section, standard segmented sections (geometric size ≤10m) and trapezoidal transition sections, the tower body bottom section is combined on site without overall lifting, the remaining sections are pre-assembled on the ground and then lifted and aligned in the air, thereby avoiding the on-site manufacturing and lifting risks of traditional super-large circular towers caused by excessive height. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

[0020] Figure 1 is a schematic diagram of the front view structure of the first embodiment of the present application; Figure 2 is a schematic diagram of the A-A cross-sectional structure of the present application; Figure 1 Figure 3 is a schematic diagram of the B local enlarged structure of the present application; Figure 2 Figure 4 is a schematic diagram of the C local enlarged structure of the present application; Figure 2 Figure 5 is a schematic diagram of the three-dimensional structure of the second embodiment of the present application; Figure 6 is a schematic diagram of the D local enlarged structure of the present application; Figure 5 Figure 7 is a schematic diagram of the three-dimensional structure of the online monitoring system of the present application; Figure 8 is a schematic diagram of the cross-sectional structure of the shell of the present application.

[0021] The following is the explanation of the reference numerals: 1, stand column; 2, shell; 201, purification area; 202, separation area; 203, cooling area; 204, support beam; 205, partition plate; 3, conical shell; 4, longitudinal reinforcing rib; 5, reinforcing ring structure; 501, inner reinforcing ring; 502, outer reinforcing ring; 503, connecting piece; 504, grid plate; 505, support lug; 506, movable clamping block; 507, connecting bolt; 6, support connecting structure; 601, support column; 602, placing support; 603, extension rod; 604, corner indicator; 605, triangular plate; 606, pull rod; 607, tension sensor; 7, base; 8, online monitoring system; 801, hanging piece; 802, hydraulic cylinder; 803, corner block; 804, pressure sensor; 9, vertical rod; 10, upper connecting plate. DETAILED DESCRIPTION

[0022] ​​​​In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0023] Embodiment one: Referring to Figures 1-4 As shown in the drawings, the present application provides a super-large and compact CO2 separation device, which comprises a shell 2, a stand 1 arranged at the lower side of the shell 2 for supporting the whole device, and a conical shell 3 arranged at the upper side of the shell 2 for shrinking the non-working section shell and connecting the flue gas outlet. The cross-sectional shape of the shell 2 is rectangular, as shown in the drawings. Figure 8 As shown in the drawings, the thickness of the four side plates of the shell 2 gradually increases along the direction to the four corners, and a plurality of longitudinal reinforcing ribs 4 are arranged at the outer side wall of the shell 2. In actual application, the four corners of the shell 2 are also provided with longitudinal reinforcing ribs 4, and the longitudinal reinforcing ribs 4 jointly bear the load of the shell 2 and the internal medium with the stand 1.

[0024] The outer side wall of the shell 2 is also provided with a plurality of reinforcing ring structures 5 along the height direction thereof. The reinforcing ring structure 5 comprises inner reinforcing rings 501 and outer reinforcing rings 502 distributed inside and outside, and a plurality of connecting pieces 503 are connected between the inner reinforcing rings 501 and the outer reinforcing rings 502. The inner reinforcing rings 501 are arranged in close contact with the outer side wall of the shell 2, and the two ends of the connecting pieces 503 are fixedly connected with the inner reinforcing rings 501 and the outer reinforcing rings 502 respectively, so that the inner reinforcing rings 501 and the outer reinforcing rings 502 form a combined stress structure, and the upper surfaces of the inner reinforcing rings 501 and the outer reinforcing rings 502 are paved with grating plates 504. The reinforcing ring structure 5 and the longitudinal reinforcing rib 4 cooperate with each other to form a three-dimensional reinforcing system for the shell 2. For the problems of side wall bulging and corner stress concentration of the super-large rectangular shell 2 when bearing the internal medium internal pressure and external wind load, the circumferential load is dispersed through the combined stress structure, so as to avoid cracking or instability of the shell 2 wall plate due to excessive local stress, and at the same time, an operation platform is provided for device operation and maintenance, which takes into account the structural reinforcement and functional practicability.

[0025] The inside of the shell 2 is divided into at least three independent functional areas by a partition plate 205 and a support beam 204 along the height direction thereof, which are sequentially a purification area 201, a separation area 202 and a cooling area 203 from top to bottom. The support beam 204 is connected with the shell 2 through a support connecting structure 6, and the partition plate 205 is provided with a gas upward flow passage for gas upward flow and liquid phase flow blockage.

[0026] The support connecting structure 6 comprises an inner part structure and an outer part structure. The inner part of the tower comprises a mounting support 602 fixed to the inner side wall of the shell 2, and the end of the support beam 204 is arranged on the mounting support 602; The outer part of the tower comprises an extension rod 603, a triangular plate 605, a pull rod 606 and a tension sensor 607. One end of the extension rod 603 is connected with the mounting support 602 and the other end extends out of the outer side wall of the shell 2. The triangular plate 605 is fixed to the extension end of the extension rod 603. One end of the pull rod 606 is hinged with the triangular plate 605, and the other end of the pull rod 606 is connected with the outside or the ground. The tension sensor 607 is connected in series with the pull rod 606, which is used to monitor the tension value borne by the pull rod 606 in real time. The corner indicator 604 is installed at the hinge between the pull rod 606 and the triangular plate 605, which is used to monitor the angle change of the pull rod 606.

[0027] The conical shell 3 adopts a trapezoidal transition section structure. The large end of the trapezoidal transition section is sealingly connected with the top port of the shell 2, and the small end of the trapezoidal transition section is provided with a flange of a flue gas outlet.

[0028] Embodiment two: As shown in Figures 1-8 The outer side of the shell 2 is provided with four vertical rods 9 which are distributed in a rectangular array around the shell 2, and the four vertical rods 9 are respectively arranged at the corner positions of the shell 2. The lower end of the vertical column 1 and the vertical rod 9 are fixed on the base 7. The upper end of the vertical rod 9 is provided with an upper connecting plate 10. The vertical rod 9 is provided with a plurality of online monitoring systems 8 for detecting the deformation of the corners and side plates of the shell 2.

[0029] The outer reinforcing ring 502 is fixedly provided with ears 505 and detachably provided with movable clamping blocks 506. The four ears 505 are distributed along the circumference of the outer reinforcing ring 502. The movable clamping blocks 506 are detachably connected with the ears 505 through bolts. The ears 505 and the movable clamping blocks 506 are matched with each other to clamp and fix the vertical rod 9.

[0030] See the attached Figure 5 and Figure 7As shown, the online monitoring system 8 comprises a hanging piece 801, one end of the hanging piece 801 is sleeved on the vertical rod 9 in the up-down direction, allowing the hanging piece 801 to slide up and down along the rod body, realizing the pressing detection of the different height corners of the shell 2, the other end of the hanging piece 801 is fixedly provided with a hydraulic cylinder 802, the head end of the push rod of the hydraulic cylinder 802 is provided with an angle pressing block 803, and the head end of the push rod of the hydraulic cylinder 802 and the angle pressing block 803 are provided with a pressure sensor 804. Through the above specific structure design, the hydraulic cylinder 802, the angle pressing block 803 and the pressure sensor 804 change the pressure of the pressure sensor 804 to monitor the deformation of the pressing position online, when the expansion deformation occurs, the pressure value detected by the pressure sensor 804 becomes larger, thereby assisting the staff to observe the deformation of each position of the shell 2, and the structure of each corner of the shell 2 can be strengthened.

[0031] In addition, the application also provides a manufacturing method of the super-large and compact CO2 separation equipment, comprising the following steps: The whole equipment is divided into a tower body bottom section, a plurality of standard sections and a trapezoidal transition section, the geometric size of each section is controlled within 10m, wherein the tower body bottom section is combined on the installation foundation in a site mode, and is not hoisted integrally; The shell plate is processed as follows: Cutting: high-precision plate processing equipment is used to cut the plate of the shell 2, in actual application, the high-precision plate processing equipment can be a 3000mm*1500mm optical fiber laser cutting machine with a model of GF-3015G, or a high-precision plasma cutting machine, the flatness of the cutter and the cutting parameters are calibrated in real time during the processing, after each plate is processed, a laser flatness detector with a model of LPM-5000 is used for detection, so that the flatness deviation of the plate is ensured to be less than ±0.5mm, and the plates are uniformly stressed when stacked, so that deformation is avoided; Bending: according to the material and thickness of the plate, the bending process is pre-performed through a computer simulation software solidworks, the radius and angle parameters of the bending die are determined, a numerical control bending machine with a model of WC67Y-200 / 4000 is used for bending the plate, or an electro-hydraulic servo numerical control bending machine with a model of PBH-110 / 3200 is used for bending the plate, the bending angle and pressure are monitored in real time, the bending angle error is ensured to be within ±0.5°, and the angle measuring instrument with a model of DG-1000 is used for detection and correction after bending; Welding: the plates to be welded are fixed by using longitudinal and transverse reinforcement tools, the relative positions of the plates are adjusted and then the tools are locked, the welding seam of the plates is welded, and the welding stress is eliminated by using vibration aging or heat treatment after welding; In the prefabrication site, the longitudinal reinforcing rib 4 is fixedly connected with the inner reinforcing ring 501 through the positioning hole reserved on the reinforcing ring structure 5, the frame is erected based on the external design size of the shell 2, the frame size is detected by using a range finder or a total station instrument, and it is ensured that the installation requirements are met; at least two layers of reinforcing ring structures 5 are arranged on each standard segment; the outer reinforcing ring 502 and the connecting piece 503 are installed, high-strength bolts are used for connection, the high-strength bolts are inspected before installation, it is ensured that the friction surface is flat and dry, and forcibly penetrating the bolts is strictly prohibited; the high-strength bolts are initially tightened and finally tightened in sequence from the middle to the two ends, the initial tightening torque is 50%-60% of the final tightening torque, the bolt torque value is detected after final tightening, and the plate joint is closed after the bolt tightening is checked and qualified; the plate of the shell 2 and the support connecting structure 6 are installed, the plates are assembled block by block and layer by layer according to the number, the rectangular cross-section anti-deformation tool is installed after the size is confirmed, and then the plates, the longitudinal reinforcing rib 4 and the inner reinforcing ring 501 are welded and fixed, the pipe openings on the shell 2 are not installed at this stage, and the holes are opened and matched after the steel frame is aligned after the tower body assembly is hoisted; The standard segment assembly and the trapezoidal transition segment are accepted, and after being qualified, the standard segment assembly and the trapezoidal transition segment are hoisted by taking the support beam 204 in each assembly as a hoisting point; before high-altitude closing and matching, a temporary tool is installed at the interface position of the longitudinal reinforcing rib 4 and the stand 1 to assist in adjusting the closing and matching accuracy; the main fixed points are positioned and installed at the port of the previous tower body and the vertical structure connection position according to the marking line; the segment to be matched is hoisted to a predetermined height, the crane keeps the hoisting force from being unhooked, the levelness and coaxiality of the segment are adjusted through the chain hoist and the temporary tool, and the butt joint weld of the longitudinal reinforcing rib 4 and the ring weld of the plate port are welded immediately after positioning is completed; after the in-air matching of all the standard segments and the trapezoidal transition segments is sequentially completed, internal operation is performed, the inner part support, the feed distributor, the wire mesh demister and the filler are installed, after completion, kerosene leakage detection is performed on the weld of the shell 2, water filling test is performed on the interior of the equipment, and the equipment manufacturing is completed after the test is qualified.

[0032] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An ultra-large, compact CO2 separation plant, characterized by: The shell (2), the column (1) arranged on the lower side of the shell (2) for supporting the whole device, and the conical shell (3) arranged on the upper side of the shell (2) for connecting the flue gas outlet are provided. The cross-sectional shape of the shell (2) is rectangular, and a plurality of longitudinal reinforcing ribs (4) are arranged on the outer side wall of the shell (2) at intervals, and the longitudinal reinforcing ribs (4) jointly bear the load of the shell (2) and the internal medium with the column (1). A plurality of reinforcing ring structures (5) are arranged on the outer side wall of the shell (2) at intervals along the height direction, and the reinforcing ring structure (5) comprises an inner reinforcing ring (501) and an outer reinforcing ring (502) distributed inside and outside, and a plurality of connecting pieces (503) are connected between the inner reinforcing ring (501) and the outer reinforcing ring (502).

2. The super-sized, compact CO2 separation plant of claim 1, wherein: The inner reinforcing ring (501) is arranged on the outer side wall of the shell (2), and the two ends of the connecting piece (503) are fixedly connected with the inner reinforcing ring (501) and the outer reinforcing ring (502) respectively, so that the inner reinforcing ring (501) and the outer reinforcing ring (502) form a combined stress structure, and the upper surfaces of the inner reinforcing ring (501) and the outer reinforcing ring (502) are paved with a grid plate (504).

3. The super-sized, compact CO2 separation plant of claim 1, wherein: The inside of the shell (2) is divided into at least three independent functional areas by a partition plate (205) and a support beam (204) along the height direction, and the functional areas are sequentially a purification area (201), a separation area (202) and a cooling area (203) from top to bottom, the support beam (204) and the shell (2) are connected with each other through a support connecting structure (6), and the partition plate (205) is provided with a gas upward flow passage for upward gas flow and liquid phase flow blocking.

4. The super-sized, compact CO2 separation plant of claim 1, wherein: The support connecting structure (6) comprises an inner tower part structure and an outer tower part structure. The inner tower part structure comprises a placing support (602) fixed to the inner side wall of the shell (2), and the end of the support beam (204) is arranged on the placing support (602); The outer tower part comprises an extension rod (603), a triangular plate (605), a pull rod (606) and a tension sensor (607), one end of the extension rod (603) is connected with the placing support (602) and the other end extends out of the outer side wall of the shell (2), the triangular plate (605) is fixed to the extension end of the extension rod (603), one end of the pull rod (606) is hinged with the triangular plate (605), and the tension sensor (607) is connected in series on the pull rod (606) for real-time monitoring of the tension value borne by the pull rod (606).

5. The very large, compact CO2 separation plant of claim 1, wherein: The conical shell (3) adopts a trapezoidal transition section structure, the large end of the trapezoidal transition section is sealingly connected with the top port of the shell (2), and the small end of the trapezoidal transition section is provided with a flue gas outlet flange.

6. The very large, compact CO2 separation plant of claim 1, wherein: The thickness of the four side plates of the shell (2) gradually increases along the direction to the four corners.

7. The super-sized, compact CO2 separation plant of claim 1, wherein: The outer side of the shell (2) is provided with four vertical rods (9) distributed in a rectangular array with the shell (2) as the center, and the four vertical rods (9) are respectively arranged at the corner positions of the shell (2). The lower side of the shell (2) is provided with a base (7), and the lower ends of the column (1) and the vertical rod (9) are fixed on the base (7). The upper ends of the vertical rod (9) are provided with an upper connecting plate (10), and the vertical rod (9) is provided with a plurality of online monitoring systems (8) for measuring the deformation of the corners and side plates of the shell (2).

8. The very large, compact CO2 separation plant of claim 7, wherein: The outer reinforcing ring (502) is fixedly provided with an ear (505) and detachably provided with a movable clamping block (506). The ear (505) is provided with four ears and is spaced apart along the circumference of the outer reinforcing ring (502). The movable clamping block (506) is detachably connected with the ear (505) through a bolt. The ear (505) and the movable clamping block (506) are matched with each other to clamp and fix the vertical rod (9).

9. The very large, compact CO2 separation plant of claim 7, wherein: The online monitoring system (8) includes a hanging piece (801). One end of the hanging piece (801) is slidably sleeved on the vertical rod (9) in the up-down direction. The other end of the hanging piece (801) is fixedly provided with a hydraulic cylinder (802). The head end of the push rod of the hydraulic cylinder (802) is provided with an angle abutting block (803). The head end of the push rod of the hydraulic cylinder (802) and the angle abutting block (803) are provided with a pressure sensor (804).

10. A method of manufacturing an ultra-large, compact CO2 separation apparatus, characterized by, The application is suitable for the super-large and compact CO2 separation equipment as claimed in any one of claims 1-6, comprising the following steps: S1, dividing the whole equipment into 1 tower body bottom section, several standard sections and 1 trapezoidal transition section, the geometric size of each section is controlled within 10m, wherein the tower body bottom section is combined on site on the installation base without integral hoisting; S2, shell plate processing; Cutting: high-precision flat plate processing equipment is used to cut the shell (2) plate. The cutting parameters and tool flatness are calibrated in real time during the processing. After the processing of each plate, a laser flatness detector is used for detection to ensure that the plate flatness deviation is not more than ±0.5mm. When the plates are stacked, the plates are uniformly stressed to avoid deformation. Bending: according to the plate material and thickness, the bending process is simulated by computer simulation software to determine the radius and angle parameters of the bending die. The plate is bent by a numerical control bending machine. The bending angle and pressure are monitored in real time to ensure that the bending angle error is controlled within ±0.5°. After bending, the angle is detected and corrected by an angle measuring instrument. Welding: the longitudinal and transverse reinforcement fixtures are used to fix the plates to be welded. After adjusting the relative position of the plates, the fixture is locked. The welding seam of the plates is welded. After welding, the welding stress is eliminated by vibration aging or heat treatment. S3, in the prefabrication site, the longitudinal reinforcing ribs (4) and the inner reinforcing ring (501) are fixedly connected through the positioning holes reserved on the reinforcing ring structure (5). The frame is erected based on the external design size of the shell (2). The frame size is detected by a range finder. At least two layers of reinforcing ring structures (5) are arranged on each standard section. Install the outer reinforcing ring (502) and the connecting piece (503) and connect them with high-strength bolts. Before installation, the high-strength bolts are inspected to ensure that the friction surface is flat and dry. The high-strength bolts are initially tightened and finally tightened from the middle to the ends. The initial tightening torque is 50%-60% of the final tightening torque. After final tightening, the bolt torque value is detected. After the bolt tightening check is passed, the closure plate joint is sealed. Install the plate and support connection structure (6) of the shell (2). Assemble the plates one by one and layer by layer according to the number. After size confirmation, install the rectangular cross-section anti-deformation tooling. Then, weld and fix the plates, longitudinal stiffeners (4), and inner reinforcing rings (501); S4, Acceptance of standard segmented components and trapezoidal transition sections, after passing, use the support beams (204) inside each component as the lifting point for hoisting; Before high-altitude closing and aligning, install temporary tooling at the interface position of the longitudinal stiffener (4) and the stand (1) to assist in adjusting the alignment accuracy. Install the main fixing points at the port of the previous section of the tower body and the vertical structure connection according to the marked line positioning; Hoist the segmented sections to be aligned to the predetermined height. The crane keeps the lifting force from unhooking. Adjust the levelness and coaxiality of the segmented sections through the chain hoist and temporary tooling. After positioning, immediately weld the butt weld of the longitudinal stiffener (4) and the ring weld of the plate port. After completing the in-air alignment of all standard segments and trapezoidal transition sections, perform internal operations to install the inner support, feed distributor, wire mesh demister, and filler. After completion, perform kerosene leakage detection on the shell (2) welds and perform a water filling test on the equipment interior. After passing the test, complete the equipment manufacturing.

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