A non-stop co catalytic oxidation treatment device

Abstract

The utility model discloses a kind of CO catalytic oxidation treatment devices of not stopping, it is related to industrial flue gas treatment technical field, including flue gas conveying pipe, shunt pipe, connecting pipe, tubular reactor, connecting pipe, bus pipe and flue gas exhaust pipe, the both ends of tubular reactor are equipped with compensation connecting mechanism, the both ends of tubular reactor are also equipped with pre-tightening mechanism, the utility model is provided with gap between the both ends of tubular reactor and connecting pipe, it is convenient to disassemble tubular reactor, it is also convenient to install tubular reactor, the efficiency of tubular reactor can be improved, it is convenient to maintain internal catalyst module, and compensation connecting mechanism can compensate the gap between tubular reactor and connecting pipe and seal, after installation, pre-tightening mechanism can provide continuous pre-tightening force to compensation connecting mechanism, ensure the connection stability of compensation connecting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of industrial flue gas treatment technology, specifically a CO catalytic oxidation treatment device that operates without interruption. Background Technology

[0002] In the existing technology, there is a granular catalyst for the catalytic oxidation of carbon monoxide (CO). It can be reduced and regenerated. Its regeneration principle is high-temperature reduction and regeneration. It is suitable for industrial flue gas such as sintering machine tail gas. The flue gas first passes through desulfurization, dust removal and denitrification devices, and then undergoes catalytic oxidation to remove CO. In use, the catalyst is usually filled into a designed module. The flue gas passes through the catalyst module to remove CO.

[0003] Based on existing technology, it has been found that existing non-stop CO catalytic oxidation treatment devices, after long-term use, require maintenance of internal catalyst modules, etc. The existing catalyst modules are generally installed in a tubular reactor, which is fixed to the pipeline by a sealing flange structure. To disassemble the tubular reactor, it is necessary to move the pipeline at both ends to make room. However, the pipeline at both ends is usually fixed and inconvenient to move. Therefore, it is difficult to achieve quick disassembly and assembly of the tubular reactor, which is quite inconvenient.

[0004] In view of this, there is an urgent need for a non-stop CO catalytic oxidation treatment device to solve the above problems. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model solves the problem using the following technical structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A non-stop CO catalytic oxidation treatment device includes a flue gas conveying pipe, a branch pipe, several flue gas filter components, a manifold, and a flue gas discharge pipe. The branch pipe is connected to the flue gas conveying pipe, and the manifold is connected to the flue gas discharge pipe. The flue gas filtration assembly includes a tubular reactor and two connecting pipes respectively disposed at both ends of the tubular reactor, the two connecting pipes being connected to the diversion pipe and the manifold pipe respectively; The tubular reactor is equipped with a catalyst module, and the length of the tubular reactor is less than the distance between the two connecting pipes at one end. A compensation connection mechanism is provided between the connecting pipe and the tubular reactor. The compensation connection mechanism is a retractable and sealed connection structure. The tubular reactor is also equipped with pre-tightening mechanisms at both ends, which are used to provide pre-tightening force to the compensating connection mechanism.

[0007] The compensation connection mechanism includes a compensation sealing ring and a connecting ring. The compensation sealing ring is slidably sleeved on the tubular reactor. Both ends of the tubular reactor are provided with circumferentially outwardly protruding flanges. One end of the compensation sealing ring abuts against and seals the flange of the tubular reactor. The connecting ring is slidably sleeved on the compensating sealing ring. The end of the connecting ring away from the tubular reactor is pressed against and sealed. The portion of the connecting ring extending out of the compensating sealing ring is threadedly connected to the end of the connecting pipe, and the end of the compensating sealing ring is pressed against and sealed to the end of the connecting pipe.

[0008] The axial cross-section of the compensating sealing ring is Z-shaped, and the axial cross-section of the connecting ring is L-shaped. The top of the ring body at the end away from the connecting pipe of the compensating sealing ring abuts and seals against the bottom of the flange of the tubular reactor. The bottom of the ring body at the end of the compensating sealing ring near the connecting pipe abuts and seals against the top of the ring body at the end of the connecting ring away from the connecting pipe. The top of the ring body at the end of the compensating sealing ring near the connecting pipe abuts and seals against the end face at the end of the tubular reactor.

[0009] The compensating sealing ring includes an intermediate ring body and end ring bodies disposed at both ends of the intermediate ring body. The intermediate ring body and the end ring bodies at both ends of the compensating sealing ring are perpendicular to each other. The inner and outer sides of the intermediate ring body of the compensating sealing ring slide against the outer wall of the flange of the tubular reactor and the inner wall of the ring body at the end of the connecting ring away from the connecting pipe, respectively.

[0010] The connecting ring includes a vertical ring body and a lower ring body disposed at the end of the vertical ring body away from the connecting pipe. The lower ring body is located on the inner side of the vertical ring body near the compensating sealing ring, and the lower ring body is arranged perpendicular to the vertical ring body. An internal thread is formed on the inner wall of the vertical ring body of the connecting ring, and an external thread is formed on the outer side of the end of the connecting pipe near the tubular reactor that is adapted to the internal thread.

[0011] The vertical ring outer wall of the connecting ring is provided with multiple anti-slip grooves extending in a direction parallel to the axis of the connecting ring, and the multiple anti-slip grooves are evenly distributed in a circle.

[0012] The compensation connection mechanism further includes a limiting ring, which includes a circular tube and an annular plate coaxially disposed at the end of the circular tube away from the connecting tube. The end of the circular tube near the connecting tube is connected to the compensation sealing ring. The inner diameter of the annular plate is larger than the outer diameter of the tubular reactor, and the outer diameter of the annular plate is larger than the inner diameter of the lower ring of the connecting ring and smaller than the outer diameter of the vertical ring of the connecting ring. The overall axial length of the combination of the limiting ring and the compensation sealing ring is equal to the axial length of the connecting ring.

[0013] The pre-tightening mechanism includes a fixed ring, a movable ring, and a compression spring. The inner wall of the fixed ring is fixedly connected to the outer wall of the tubular reactor. The movable ring is rotatably sleeved on the outer wall of the connecting ring. The movable ring is located on the side of the anti-slip groove close to the fixed ring. The two ends of the compression spring are fixed to the sides of the fixed ring and the movable ring that are close to each other.

[0014] The pre-tightening mechanism also includes a guide rod, one end of which is fixedly connected to the end of the movable ring near the fixed ring, and the other end of which slides through the fixed ring. The end of the guide rod away from the movable ring is provided with a limiting part with a diameter larger than the inner diameter of the fixed ring. When the connecting ring is tightened onto the connecting pipe, the distance between the movable ring and the fixed ring is not greater than the length of the guide rod.

[0015] The flue gas filter assembly is provided in two parts.

[0016] The above-described structure of this utility model can achieve the following beneficial effects: By creating gaps between the two ends of the tubular reactor and the connecting pipe, it is easy to disassemble and install the tubular reactor, which improves the loading and unloading efficiency of the tubular reactor and facilitates the maintenance of the internal catalyst module. The compensation connection mechanism can compensate and seal the gap between the tubular reactor and the connecting pipe. After installation, the pre-tightening mechanism can provide a continuous pre-tightening force to the compensation connection mechanism to ensure the connection stability of the compensation connection mechanism. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in this embodiment; Figure 2 This is a schematic diagram of the connecting pipe, tubular reactor, compensation connection mechanism, and pre-tightening mechanism when the tubular reactor is partially cut open in this embodiment. Figure 3 This is a schematic diagram of the disassembled structure of the connecting pipe and the end of the tubular reactor in this embodiment; Figure 4 This is a cross-sectional view of the connecting pipe and the end of the tubular reactor in this embodiment.

[0018] In the diagram: 100, flue gas conveying pipe; 200, diversion pipe; 300, connecting pipe; 310, external threaded part; 400, tubular reactor; 500, manifold; 600, flue gas discharge pipe; 700, compensation connection mechanism; 710, compensation sealing ring; 720, connecting ring; 721, internal threaded part; 722, anti-slip groove; 730, limiting ring; 800, pre-tightening mechanism; 810, fixed ring; 820, movable ring; 830, compression spring; 840, guide rod; 900, catalyst module. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0021] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0022] refer to Figures 1-2 The CO catalytic oxidation treatment device shown includes a flue gas conveying pipe 100, a branch pipe 200, several flue gas filter components, a manifold 500 and a flue gas discharge pipe 600. The branch pipe 200 is connected to the flue gas conveying pipe 100 and the manifold 500 is connected to the flue gas discharge pipe 600. The flue gas filtration assembly includes a tubular reactor 400 and two connecting pipes 300 respectively disposed at both ends of the tubular reactor 400. The two connecting pipes 300 are respectively connected to a branch pipe 200 and a manifold 500. Specifically, the flue gas conveying pipe 100 is used to convey flue gas. The output end of the flue gas conveying pipe 100 is fixed and connected to the input end of the branch pipe 200. The output end of the branch pipe of the branch pipe 200 is fixed and connected to the input end of a set of connecting pipes 300. A catalyst module 900 is installed inside the tubular reactor 400. The output end of another set of connecting pipes 300 is fixed and connected to the input end of the branch pipe of the manifold 500. The output end of the manifold 500 is fixed and connected to the input end of the flue gas discharge pipe 600. The flue gas discharge pipe 600 is used to discharge the treated flue gas. The length of the tubular reactor 400 is less than the distance between the two connecting pipes 300 at their closest ends; A compensating connection mechanism 700 is provided between the connecting pipe 300 and the tubular reactor 400. The compensating connection mechanism 700 is a retractable and sealed connection structure. The tubular reactor 400 is also equipped with pre-tightening mechanisms 800 at both ends, which are used to provide pre-tightening force to the compensating connection mechanism 700.

[0023] Based on the above structure, when the tubular reactor 400 needs to be installed, the tubular reactor 400 with the built-in catalyst module 900 is placed between two corresponding connecting pipes 300. Then, the tubular reactor 400 is fixed and connected to the two corresponding connecting pipes 300 through the compensation connection mechanism 700. The compensation connection mechanism 700 compensates and seals the gap between the tubular reactor 400 and the connecting pipes 300. After installation, the pre-tightening mechanism 800 can provide a continuous pre-tightening force to the compensation connection mechanism 700 to ensure the connection stability of the compensation connection mechanism 700. During disassembly, simply release the connection of the compensation connection mechanism 700 and move it towards the center of the tubular reactor 400 (overcoming the tightening force of the pre-tightening mechanism 800). This will create a gap between the tubular reactor 400 and the connecting pipe 300, facilitating the disassembly and installation of the tubular reactor 400. This will improve the loading and unloading efficiency of the tubular reactor 400 and make it easier to maintain the tubular reactor 400 that needs to be replaced by the internal catalyst module 900.

[0024] In this embodiment, two flue gas filter components are provided.

[0025] like Figure 1 — Figure 3 As shown, the compensation connection mechanism 700 includes a compensation sealing ring 710 and a connecting ring 720. The compensation sealing ring 710 is slidably sleeved on the tubular reactor 400. Both ends of the tubular reactor 400 are provided with circumferentially outwardly protruding flanges. One end of the compensation sealing ring 710 abuts against and seals the flange of the tubular reactor 400. The connecting ring 720 is slidably sleeved on the compensating sealing ring 710. The end of the connecting ring 720 away from the tubular reactor 400 is pressed and sealed. The part of the connecting ring 720 extending out of the compensating sealing ring 710 is threadedly connected to the end of the connecting pipe 300, and the end of the compensating sealing ring 710 is pressed and sealed to the end of the connecting pipe 300. Among them, the axial cross section of the compensating sealing ring 710 is "Z" shaped, the axial cross section of the connecting ring 720 is "L" shaped, the top of the ring body of the compensating sealing ring 710 away from the connecting pipe 300 abuts and seals the bottom of the flange of the tubular reactor 400, the bottom of the ring body of the compensating sealing ring 710 near the connecting pipe 300 abuts and seals the top of the ring body of the connecting ring 720 away from the connecting pipe 300, and the top of the ring body of the compensating sealing ring 710 near the connecting pipe 300 abuts and seals the end face of the compensating sealing ring 710 near the end of the tubular reactor 400. The compensating sealing ring 710 includes an intermediate ring body and end ring bodies disposed at both ends of the intermediate ring body. The intermediate ring body of the compensating sealing ring 710 is perpendicular to the end ring bodies at both ends. The inner and outer sides of the intermediate ring body of the compensating sealing ring 710 slide against the outer side wall of the flange of the tubular reactor 400 and the inner side wall of the ring at the end of the connecting ring 720 away from the connecting pipe 300, respectively. In addition, the connecting ring 720 includes a vertical ring body and a lower ring body disposed at the end of the vertical ring body away from the connecting pipe 300. The lower ring body is located on the inner side of the vertical ring body near the compensating sealing ring 710 and is perpendicular to the vertical ring body. An internal thread portion 721 is formed on the inner wall of the vertical ring of the connecting ring 720, and an external thread portion 310 adapted to the internal thread portion 721 is formed on the outer side of the end of the connecting pipe 300 near the tubular reactor 400. Multiple anti-slip grooves 722 extending in a direction parallel to the axis of the connecting ring 720 are provided on the outer wall of the vertical ring of the connecting ring 720. The multiple anti-slip grooves 722 are evenly distributed circumferentially.

[0026] During installation, first slide both the compensating sealing ring 710 and the connecting ring 720 towards the middle of the tubular reactor 400, thus exposing the end of the tubular reactor 400 and preventing them from obstructing the insertion of the tubular reactor 400 (here, inserting the tubular reactor 400 between the two connecting pipes 300). After the tubular reactor 400 is inserted, slide the connecting ring 720 away from the middle of the tubular reactor 400, so that the inner side of the end of the connecting ring 720 contacts the outer side of the end of the connecting pipe 300. Then, rotate the connecting ring 720, and the internal thread 721 and the external thread 310 will engage to connect the connecting ring 720 with the tubular reactor 400. With the connecting pipe 300 fixed, during the process of rotating the connecting ring 720 to move it (the rotating connecting ring 720 also slides relative to the tubular reactor 400), the end ring of the rotating connecting ring 720 also drives the compensating sealing ring 710 to slide simultaneously. Ultimately, the top of the lower ring of the compensating sealing ring 710 abuts against and seals the bottom of the flange of the tubular reactor 400, the bottom of the upper ring of the compensating sealing ring 710 abuts against and seals the top of the lower ring of the connecting ring 720, and the top of the upper ring of the compensating sealing ring 710 abuts against and seals the end face 3. This achieves the state of fixing the tubular reactor 400 and the connecting pipe 300 and forming a sealed connection, thus completing the operation of installing the tubular reactor 400. When the tubular reactor 400 needs to be disassembled, simply rotate the connecting ring 720 in the opposite direction to disengage it from the end of the connecting pipe 300. This will separate both the connecting ring 720 and the compensating sealing ring 710 from the connecting pipe 300. Then, slide the connecting ring 720 and the compensating sealing ring 710 toward the middle of the tubular reactor 400. This will separate the end of the tubular reactor 400 from the connecting pipe 300 and expose the original gap. The disassembly operation is then completed by removing the tubular reactor 400. This method is not only convenient and quick to operate, but also ensures that there is a gap between the tubular reactor 400 and the connecting pipe 300 during installation and disassembly, making it easier to assemble and disassemble. At the same time, it ensures the airtightness of both after installation, meeting the usage requirements.

[0027] In addition, in other embodiments, sealing rings (sealing rings) can be provided on the contact surfaces of the compensating sealing ring 710 and the connecting ring 720, the contact surfaces of the compensating sealing ring 710 and the connecting pipe 300, and the contact surfaces of the compensating sealing ring 710 and the tubular reactor 400 to ensure the sealing effect. The specific setting method and installation position of the sealing ring can refer to the setting of the existing flange structure, and will not be described further here.

[0028] like Figure 4 As shown, the compensation connection mechanism 700 also includes a limiting ring 730. The limiting ring 730 includes a circular tube and an annular plate coaxially disposed at the end of the circular tube away from the connecting pipe 300. The end of the circular tube near the connecting pipe 300 is connected to the compensation sealing ring 710. The inner diameter of the annular plate is larger than the outer diameter of the tubular reactor 400. The outer diameter of the annular plate is larger than the inner diameter of the lower ring of the connecting ring 720 and smaller than the outer diameter of the vertical ring of the connecting ring 720. The axial length of the combination of the limiting ring (730) and the compensation sealing ring 710 is equal to the axial length of the connecting ring 720 (or it can be understood or set that the distance between the top of the annular plate of the limiting ring 730 and the bottom of the end ring of the compensation sealing ring 710 away from the limiting ring 730 is equal to the axial length of the connecting ring 720).

[0029] By setting the limiting ring 730, when the connecting ring 720 is pushed to slide towards the middle of the tubular reactor 400, the end ring of the connecting ring 720 will slide a certain distance and then abut against the horizontal ring of the limiting ring 730. This will drive the compensating sealing ring 710 to slide towards the middle of the tubular reactor 400 through the limiting ring 730. This facilitates the simultaneous movement of the connecting ring 720 and the compensating sealing ring 710, and avoids the connecting ring 720 and the compensating sealing ring 710 from completely separating when the connecting ring 720 is moved (when the limiting ring 730 is not set), which would cause inconvenience to the operation of having to move the compensating sealing ring 710 again. This further simplifies the operation during the installation and disassembly process and makes it more convenient to use.

[0030] like Figure 2 — Figure 4As shown, the pre-tightening mechanism 800 includes a fixed ring 810, a movable ring 820, and a compression spring 830. The inner wall of the fixed ring 810 is fixedly connected to the outer wall of the tubular reactor 400. The movable ring 820 is rotatably sleeved on the outer wall of the connecting ring 720. The movable ring 820 is located on the side of the anti-slip groove 722 close to the fixed ring 810. The two ends of the compression spring 830 are fixed to the sides of the fixed ring 810 and the movable ring 820 that are close to each other, respectively. The fastening mechanism 800 also includes a guide rod 840. One end of the guide rod 840 is fixedly connected to the end of the movable ring 820 near the fixed ring 810. The other end of the guide rod 840 slides through the fixed ring 810. The end of the guide rod 840 away from the movable ring 820 is provided with a limiting part with a diameter larger than the inner diameter of the fixed ring 810. When the connecting ring 720 is tightened onto the connecting pipe 300, the distance between the movable ring 820 and the fixed ring 810 is not greater than the length of the guide rod 840.

[0031] With the pre-tightening mechanism 800 in place, after the connecting ring 720 is threaded onto the connecting pipe 300, the compression spring 830 applies a pre-tightening force (elastic force) to the connecting ring 720 through the movable ring 820. This makes the thread engagement between the internal thread 721 and the external thread 310 more tight and stable, reducing the probability of the connecting ring 720 falling off during subsequent use, thereby improving the reliability of the connecting ring 720. This, in turn, enhances the stability of the compensating sealing ring 710, ensuring that the compensating sealing ring 710 always provides a good sealing effect, reducing the probability of displacement of the compensating sealing ring 710 causing a connection gap between the tubular reactor 400 and the connecting pipe 300. This ensures a more stable connection seal between the tubular reactor 400 and the connecting pipe 300, improving the working stability and reliability of the CO catalytic oxidation treatment device that does not stop, and reducing its failure rate. By setting the guide rod 840, additional guiding support is provided when the operator pushes the connecting ring 720 to move towards the middle of the tubular reactor 400 or to move the connecting ring 720 away from the middle of the tubular reactor 400, making the movement more stable, reducing the probability of the connecting ring 720 deviating, thereby improving the connection accuracy when the connecting ring 720 is reused, and making the sealing performance more stable after installation. Of course, when the operator pushes the connecting ring 720 toward the middle of the tubular reactor 400, the operator needs to overcome the elastic force of the compression spring 830, so a greater force needs to be applied. However, the elastic force of the compression spring 830 can also drive the connecting ring 720 to automatically move closer to the connecting tube 300, which has a certain effect of saving effort and facilitating operation.

[0032] A further optimization in this embodiment includes a catalyst regeneration system. This system regenerates the catalyst (which is granular, including but not limited to spherical particles with a diameter of 1-10 mm, or other irregular particle shapes) within the catalyst module 900 through high-temperature reduction, achieving the effect of continuous operation.

[0033] Finally, it should be noted that the limitations on orientation (e.g., upper end, lower end), length, height, etc. mentioned in this embodiment should be understood with reference to the accompanying drawings of this application. The range in actual application may not be consistent with the orientation described in this embodiment. As long as the connection relationship remains unchanged, it will not affect the implementation of this application.

[0034] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A non-stop CO catalytic oxidation treatment device, characterized in that: It includes a flue gas conveying pipe (100), a branch pipe (200), several flue gas filter components, a manifold (500), and a flue gas discharge pipe (600). The branch pipe (200) is connected to the flue gas conveying pipe (100), and the manifold (500) is connected to the flue gas discharge pipe (600). The flue gas filtration assembly includes a tubular reactor (400) and two connecting pipes (300) respectively disposed at both ends of the tubular reactor (400), the two connecting pipes (300) being connected to the branch pipe (200) and the manifold (500) respectively; The tubular reactor (400) is equipped with a catalyst module (900), and the length of the tubular reactor (400) is less than the distance between the two connecting pipes (300) at one end. A compensating connection mechanism (700) is provided between the connecting pipe (300) and the tubular reactor (400), and the compensating connection mechanism (700) is a retractable and sealed connection structure. The tubular reactor (400) is also equipped with pre-tightening mechanisms (800) at both ends, which are used to provide pre-tightening force to the compensating connection mechanism (700).

2. The CO catalytic oxidation treatment device that operates without shutdown according to claim 1, characterized in that: The compensation connection mechanism (700) includes a compensation sealing ring (710) and a connecting ring (720). The compensation sealing ring (710) is slidably sleeved on the tubular reactor (400). Both ends of the tubular reactor (400) are provided with circumferentially protruding flanges. One end of the compensation sealing ring (710) abuts against and seals the flange of the tubular reactor (400). The connecting ring (720) is slidably sleeved on the compensating sealing ring (710). The end of the connecting ring (720) and the end of the compensating sealing ring (710) away from the tubular reactor (400) are pressed together and sealed. The part of the connecting ring (720) extending out of the compensating sealing ring (710) is threadedly connected to the end of the connecting pipe (300), and the end of the compensating sealing ring (710) is pressed together and sealed to the end of the connecting pipe (300).

3. The CO catalytic oxidation treatment device that operates without shutdown according to claim 2, characterized in that: The axial cross-section of the compensating sealing ring (710) is "Z" shaped, and the axial cross-section of the connecting ring (720) is "L" shaped. The top of the ring body of the compensating sealing ring (710) at the end away from the connecting pipe (300) abuts against and seals the bottom of the flange of the tubular reactor (400). The bottom of the ring body of the compensating sealing ring (710) at the end near the connecting pipe (300) abuts against and seals the top of the ring body of the connecting ring (720) at the end away from the connecting pipe (300). The top of the ring body of the compensating sealing ring (710) at the end near the connecting pipe (300) abuts against and seals the end face of the connecting pipe (300) at the end near the tubular reactor (400).

4. The CO catalytic oxidation treatment device that operates without shutdown according to claim 3, characterized in that: The compensation sealing ring (710) includes an intermediate ring body and end ring bodies disposed at both ends of the intermediate ring body. The intermediate ring body and the end ring bodies at both ends are perpendicular to each other. The inner and outer sides of the intermediate ring body slide against the outer wall of the flange of the tubular reactor (400) and the inner wall of the ring at the end of the connecting ring (720) away from the connecting pipe (300), respectively.

5. The CO catalytic oxidation treatment device that operates without shutdown according to claim 3, characterized in that: The connecting ring (720) includes a vertical ring body and a lower ring body disposed at the end of the vertical ring body away from the connecting pipe (300). The lower ring body is located on the side of the vertical ring body near the compensating sealing ring (710) and is arranged perpendicular to the vertical ring body. An internal thread portion (721) is formed on the inner wall of the vertical ring body. An external thread portion (310) that is threaded to match the internal thread portion (721) is formed on the outer side of the end of the connecting pipe (300) near the tubular reactor (400).

6. The CO catalytic oxidation treatment device that operates without shutdown according to claim 5, characterized in that: The outer wall of the vertical ring is provided with a plurality of anti-slip grooves (722) extending in a direction parallel to the axis of the connecting ring (720), and the plurality of anti-slip grooves (722) are evenly distributed in a circle.

7. The CO catalytic oxidation treatment device that operates without shutdown according to claim 3, characterized in that: The compensation connection mechanism (700) further includes a limiting ring (730), which includes a circular tube and an annular plate coaxially disposed at the end of the circular tube away from the connecting tube (300). The end of the circular tube near the connecting tube (300) is connected to the compensation sealing ring (710). The inner diameter of the annular plate is larger than the outer diameter of the tubular reactor (400). The outer diameter of the annular plate is larger than the inner diameter of the lower ring body of the connecting ring (720) and smaller than the outer diameter of the vertical ring body. The overall axial length of the combination of the limiting ring (730) and the compensation sealing ring (710) is equal to the axial length of the connecting ring (720).

8. The CO catalytic oxidation treatment device that operates without shutdown according to claim 6, characterized in that: The pre-tightening mechanism (800) includes a fixed ring (810), a movable ring (820), and a compression spring (830). The inner wall of the fixed ring (810) is fixedly connected to the outer wall of the tubular reactor (400). The movable ring (820) is sleeved on the outer wall of the connecting ring (720). The movable ring (820) is located on the side of the anti-slip groove (722) close to the fixed ring (810). The two ends of the compression spring (830) are fixed to the sides of the fixed ring (810) and the movable ring (820) respectively.

9. The CO catalytic oxidation treatment device that operates without shutdown according to claim 8, characterized in that: The pre-tightening mechanism (800) further includes a guide rod (840), one end of which is fixedly connected to the end of the movable ring (820) near the fixed ring (810), and the other end of which slides through the fixed ring (810). The end of the guide rod (840) away from the movable ring (820) is provided with a limiting part with a diameter larger than the inner diameter of the fixed ring (810). When the connecting ring (720) is tightened onto the connecting tube (300), the distance between the movable ring (820) and the fixed ring (810) is not greater than the length of the guide rod (840).

10. The CO catalytic oxidation treatment device that operates without shutdown according to claim 1, characterized in that: The flue gas filter assembly is provided in two parts.

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