Scrip reactor and method of servicing the same
By designing a detachable soot blowing assembly in the SCR reactor, the maintenance difficulty caused by the integrated soot blowing pipeline in the prior art is solved, and convenient maintenance is achieved in situations where the space in the ship's engine room is limited.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE 711TH RES INST OF CHINA STATE SHIPBUILDING CORP
- Filing Date
- 2025-12-25
- Publication Date
- 2026-07-24
Smart Images
Figure CN121611527B_ABST
Abstract
Description
Technical Field
[0001] This application relates generally to the technical field of SCR reactors, and more specifically to an SCR reactor and a method for its maintenance. Background Technology
[0002] SCR (Selective Catalytic Reduction) reactors are the core devices for treating nitrogen oxides in ship exhaust gas. Marine high-pressure SCR reactors typically employ a cylindrical pressure-bearing shell structure, with arrayed catalyst modules arranged internally. To remove ash buildup on the catalyst surface, a soot blowing system is required inside the reactor.
[0003] In existing technologies, high-pressure SCR reactors typically employ an integrated sootblowing pipeline that runs through the catalyst module area. This structural design necessitates the removal of most of the sootblowing pipeline from the reactor interior to free up sufficient operating space during catalyst module maintenance. However, in the constrained environment of ship engine rooms, removing the entire sootblowing pipeline is challenging, increasing the difficulty of SCR reactor maintenance. Summary of the Invention
[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0005] To at least partially solve the above problems, a first aspect of this application provides an SCR reactor, the SCR reactor comprising:
[0006] case;
[0007] A support, which is disposed within the housing and at least partially configured to form an accommodating space;
[0008] At least two catalyst modules, wherein at least two catalyst modules are disposed within the accommodating space and arranged in a lateral direction; and
[0009] A soot blowing assembly, comprising a soot blowing tube extending in the transverse direction and disposed outside the accommodating space in the axial direction of the housing, the soot blowing tube comprising a fixing fitting and a connecting fitting, the first end of the fixing fitting passing through the housing and fixedly connected to the housing, the second end of the fixing fitting being detachably connected to the connecting fitting;
[0010] Wherein, the portion of the accommodating space not obstructed by the fixed pipe fitting has a dimension in the lateral direction that is not less than the dimension of the catalyst module in the lateral direction.
[0011] According to the SCR reactor of the first aspect of this application, when the catalyst module is overhauled, the connecting pipes are first disassembled, so that the catalyst module can be taken out sequentially through the portion of the accommodating space not blocked by the fixed pipes for overhaul. This eliminates the need to move the sootblowing pipe outward as a whole to avoid the catalyst module, thereby reducing the space occupied in the ship's engine room when overhauling the SCR reactor, making the SCR reactor more applicable, and also reducing the operational difficulty of the SCR reactor overhaul.
[0012] Optionally, the bracket includes a support plate extending in a vertical direction to the accommodating space, the accommodating space including a first region and a second region disposed on both sides of the support plate in the transverse direction, and the fixing tube is located on the side of the support plate closer to the second region in the transverse direction.
[0013] Along the transverse direction, the distance between the second end of the fixed pipe and the support plate is not less than the dimension of the catalyst module along the transverse direction.
[0014] Optionally, along the lateral direction, the distance between the second end of the fixed tube and the support plate is less than twice the dimension of the catalyst module along the lateral direction.
[0015] Optionally, the support is at least partially configured to form at least two of the receiving spaces arranged along the vertical direction, and the soot blowing assembly includes soot blowing pipes in a number consistent with the number of the receiving spaces, and the soot blowing pipes are arranged one-to-one with the receiving spaces along the vertical direction.
[0016] Optionally, the second ends of each of the fixed pipe fittings are aligned along the lateral direction.
[0017] Optionally, the bracket further includes a fixing frame located along the lateral direction on the side of the bracket away from the fixing fitting;
[0018] At least a portion of the first end of the connecting pipe is connected to the second end of the fixing pipe, and the second end of the connecting pipe is connected to the fixing bracket.
[0019] Optionally, the soot blowing assembly includes an air inlet pipe, and the fixing fittings of each of the soot blowing pipes arranged along the vertical direction are detachably connected to the air inlet pipe.
[0020] Optionally, the support has a slot corresponding to the position of the catalyst module.
[0021] Optionally, the SCR reactor includes at least two supports and at least two soot blowing assemblies, the supports being arranged along the axial direction of the shell, and the at least two soot blowing assemblies being arranged in a one-to-one correspondence with the at least two supports; and / or
[0022] The bracket is detachably connected to the housing.
[0023] A second aspect of this application provides a method for overhauling an SCR reactor, wherein the method includes:
[0024] Remove the connecting fitting of the soot blowing pipe so that the portion of the accommodating space not covered by the fixing fitting is exposed;
[0025] Remove the catalyst module contained in the portion of the accommodating space not obstructed by the fixed fitting;
[0026] Move the catalyst module, which was contained in the portion of the accommodating space that was blocked by the fixed pipe, to the portion of the accommodating space that was not blocked by the fixed pipe, and then remove the catalyst module.
[0027] The maintenance method for the SCR reactor according to the second aspect of this application reduces the space occupied in the ship's engine room during SCR reactor maintenance and lowers the operational difficulty of SCR reactor maintenance. Attached Figure Description
[0028] The following drawings, illustrating embodiments of this application, are incorporated herein by reference and are used to understand this application. The drawings illustrate embodiments of this application and their descriptions, serving to explain the principles of this application. In the drawings,
[0029] Figure 1 A front view of an existing SCR reactor;
[0030] Figure 2 This is a front view of an existing SCR reactor, in which the soot blowing pipe of the SCR reactor is pulled outwards;
[0031] Figure 3 This is a three-dimensional schematic diagram of an SCR reactor according to a preferred embodiment of this application;
[0032] Figure 4 for Figure 3 A three-dimensional schematic diagram of the support structure for the SCR reactor in the image;
[0033] Figure 5 for Figure 1 A front view of the SCR reactor in the image;
[0034] Figure 6 for Figure 5 A schematic diagram of the dismantling of connecting pipes in the SCR reactor;
[0035] Figure 7 for Figure 6 A schematic diagram of the process of removing the catalyst pressure plate in the SCR reactor.
[0036] Figure 8 for Figure 7 A schematic diagram of the dismantling of the catalyst module in the first region of the SCR reactor;
[0037] Figure 9 for Figure 8 A schematic diagram of the operation of a column of catalyst modules near the first region in the second area of the SCR reactor dismantling process;
[0038] Figure 10 for Figure 9 A schematic diagram of the operation of moving the remaining catalyst module in the second region of the SCR reactor to a position in the second region that is not blocked by the fixed pipe fittings;
[0039] Figure 11 for Figure 10 A schematic diagram of the operation of the catalyst module in the second region, where the SCR reactor is dismantled and moved to a location not blocked by fixed pipe fittings;
[0040] Figure 12 This is a schematic diagram of the structure of an SCR reactor according to another preferred embodiment of this application; and
[0041] Figure 13 This is a schematic diagram of the structure of an SCR reactor according to another preferred embodiment of this application.
[0042] Explanation of reference numerals in the attached figures
[0043] 100: SCR reactor; 110: Shell
[0044] 120: Bracket; 121: Storage space
[0045] 122: Area 1 123: Area 2
[0046] 124: Panel rack; 125: Receiving plate
[0047] 126: Groove 127: Support plate
[0048] 128: Fixture 129: Mounting Hole
[0049] 130: Catalyst plate 131: Fastener
[0050] 140: Catalyst module; 150: Soot blowing assembly
[0051] 151: Soot blowing pipe; 152: Fixed pipe fittings
[0052] 153: Connecting pipe fitting; 154: First flange
[0053] 155: Second flange; 156: Inlet pipe
[0054] 157: Third flange; 158: Fourth flange
[0055] D1: Axial direction; D2: Lateral direction
[0056] D3: Vertical direction Detailed Implementation
[0057] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.
[0058] In this document, ordinal numbers such as “first” and “second” used in this application are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term “first component” does not imply the existence of a “second component”, and the term “second component” does not imply the existence of a “first component”.
[0059] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.
[0060] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.
[0061] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.
[0062] like Figure 1 As shown, in the prior art, the SCR reactor 100 is equipped with a catalyst module 140. To clean the catalyst module 140 by blowing off soot, the SCR reactor 100 has an integrated soot blowing pipe 151 on one side of the catalyst module 140. However, as... Figure 2As shown, in order to overhaul the catalyst module 140, the soot blower 151 needs to be at least partially pulled out from the outside of the SCR reactor 100, which will inevitably encroach on the space of the ship's engine room outside the SCR reactor 100, and the overhaul operation of the SCR reactor 100 is quite difficult.
[0063] Therefore, in combination Figures 3 to 11 As shown, this application provides an SCR reactor 100, which includes a shell 110, a support 120, at least two catalyst modules 140, and a soot blowing assembly 150. The support 120 is disposed within the shell 110 and at least partially forms a receiving space 121. The at least two catalyst modules 140 are disposed within the receiving space 121 and arranged in a transverse direction D2. The soot blowing assembly 150 includes a soot blowing pipe 151, which extends in the transverse direction D2 and is disposed outside the receiving space 121 in the axial direction D1 of the shell 110. The soot blowing pipe 151 includes a fixing fitting 152 and a connecting fitting 153. The first end of the fixing fitting 152 passes through the shell 110 and is fixedly connected to the shell 110, and the second end of the fixing fitting 152 is detachably connected to the connecting fitting 153.
[0064] The portion of the accommodating space 121 not obstructed by the fixed fitting 152 has a dimension D2 in the lateral direction that is not less than the dimension D2 in the lateral direction of the catalyst module 140.
[0065] According to the SCR reactor 100 of this application, when the catalyst module 140 is overhauled, the connecting pipe 153 is first disassembled, so that the catalyst module 140 can be taken out sequentially through the portion of the accommodating space 121 that is not blocked by the fixed pipe 152 for overhaul. There is no need to move the soot blowing pipe 151 outward as a whole to avoid the catalyst module 140, thereby reducing the space occupied in the ship's engine room when overhauling the SCR reactor 100, making the SCR reactor 100 more applicable, and also reducing the operational difficulty of the overhaul operation of the SCR reactor 100.
[0066] Specifically, refer to Figure 3 Because of the portion of the accommodating space 121 that is not blocked by the fixing pipe 152, the catalyst module 140 in the accommodating space 121 can be moved sequentially to that portion and removed, so that the catalyst module 140 can be inspected without removing the fixing pipe 152.
[0067] Reference Figure 4 and Figure 5The support 120 includes two panel frames 124 and several receiving plates 125. The two panel frames 124 are spaced apart along the axial direction D1. The several receiving plates 125 are disposed between the two panel frames 124 and connected to them. Some of the receiving plates 125 extend along the vertical direction D3, and others extend along the transverse direction D2, thereby forming multiple receiving spaces 121 arranged along the vertical direction D3 in the support 120. In addition, the receiving spaces 121 are in communication with the side walls of the panel frames 124, thereby facilitating the removal and placement of the catalyst module 140 by personnel from the side of the support 120.
[0068] Optionally, the receiving plate 125 (especially the receiving plate 125 extending along the vertical direction D3) is detachably connected to the panel frame 124, thereby facilitating the removal of the receiving plate 125 by personnel through the receiving space 121. Preferably, the receiving plate 125 is detachably connected to the panel frame 124 by fasteners 131 for easy installation.
[0069] Optionally, the support 120 includes a support plate 127 extending in the vertical direction D3, with the top and bottom ends of the support plate 127 extending to the top and bottom of the support 120, respectively, so that the support 120 has sufficient vertical support strength, thereby enabling the support 120 to support each catalyst module 140.
[0070] The receiving plate 125 is connected to the support plate 127, and the support plate 127 extends into the receiving space 121, which includes a first region 122 and a second region 123 disposed on both sides of the support plate 127 in the lateral direction D2. In other words, the arrangement of the support plate 127 divides the receiving space 121, thereby forming the first region 122 and the second region 123.
[0071] The fixed pipe 152 is located on the side of the support plate 127 near the second region 123 along the lateral direction D2, and is used for soot blowing and cleaning the catalyst module 140 in the second region 123. The main body of the connecting pipe 153 is located on the side of the support plate 127 near the first region 122 along the lateral direction D2, and one end of the connecting pipe 153 extends to the side of the support plate 127 near the second region 123 and connects to the fixed pipe 152.
[0072] Reference Figure 5Along the transverse direction D2, the distance between the second end of the fixed pipe 152 and the support plate 127 is not less than the size of the catalyst module 140 along the transverse direction D2, so that the part of the second region 123 not covered by the fixed pipe 152 can be smoothly removed from the catalyst module 140, thereby enabling the catalyst module 140 in the second region 123 to be removed sequentially from the part of the second region 123 not covered by the fixed pipe 152, realizing the removal, placement and disassembly of the catalyst module 140 in the second region 123.
[0073] Preferably, the support plate 127 is located on the side away from the fixed pipe 152 in the middle of the bracket 120 along the transverse direction D2. While ensuring the support performance of the bracket 120, the fixed pipe 152 is made to have a sufficient length, so that the soot blowing pipe 151 is stable enough, and the difficulty of disassembling and assembling the connecting pipe 153 is also reduced.
[0074] Optionally, combined Figure 3 As shown, the second end of the fixed pipe fitting 152 is constructed as a first flange 154, and the end of the connecting pipe fitting 153 near the fixed pipe fitting 152 is constructed as a second flange 155. The first flange 154 and the second flange 155 can be connected by fasteners 131, thereby realizing the detachable installation between the fixed pipe fitting 152 and the connecting pipe fitting 153. Furthermore, a sealing gasket can be provided between the first flange 154 and the second flange 155, thereby enhancing the sealing performance between the fixed pipe fitting 152 and the connecting pipe fitting 153 and preventing gas leakage.
[0075] Optionally, along the transverse direction D2, the distance between the second end of the fixed pipe 152 and the support plate 127 is less than twice the size of the catalyst module 140 along the transverse direction D2. While satisfying the requirements for taking and disassembling the catalyst module 140 in the second area 123, the fixed pipe 152 has sufficient length, thereby reducing the design length of the connecting pipe 153, reducing the difficulty of disassembling the connecting pipe 153, and also ensuring that the soot blowing pipe 151 has sufficient structural strength.
[0076] Reference Figure 3 and Figure 5 The support 120 is constructed to form multiple accommodating spaces 121 arranged along the vertical direction D3. Correspondingly, the soot blowing assembly 150 includes soot blowing pipes 151 in the same number as the accommodating spaces 121, and the soot blowing pipes 151 are arranged one-to-one with the accommodating spaces 121 along the vertical direction D3, so that the soot blowing assembly 150 can perform soot blowing operation on the catalyst units contained in each accommodating space 121, and the soot cleaning effect is good.
[0077] Optionally, the soot blowing assembly 150 includes an air inlet pipe 156. The fixing fittings 152 of each soot blowing pipe 151 arranged vertically in the D3 direction are detachably connected to the air inlet pipe 156. This allows each soot blowing pipe 151 of the soot blowing assembly 150 to deliver cleaning gas through the air inlet pipe 156, facilitating gas control and ensuring more even soot blowing pressure. Specifically, the first end of the fixing fitting 152 is configured as a third flange 157, and the end of the air inlet pipe 156 used to connect to the fixing fitting 152 is configured as a fourth flange 158. The third flange 157 and the fourth flange 158 are connected by fasteners 131, enabling detachable installation of the fixing fitting 152 and the air inlet pipe 156. This facilitates the removal of the air inlet pipe 156 for cleaning the soot blowing assembly 150. Furthermore, a sealing gasket can be provided between the third flange 157 and the fourth flange 158 to enhance the sealing between the fixing fitting 152 and the air inlet pipe 156, preventing gas leakage.
[0078] Optionally, refer to Figure 3 and Figure 4 The bracket 120 also includes a fixing bracket 128, which is located on the side of the bracket 120 away from the fixing pipe 152 along the transverse direction D2. Specifically, the fixing bracket 128 is connected to the side wall of the panel frame 124 by fasteners 131. The fixing bracket 128 is provided with a mounting hole 129 that passes through the fixing bracket 128 along the transverse direction D2. At least a portion of the first end of the connecting pipe 153 is connected to the second end of the fixing pipe 152. The second end of the connecting pipe 153 passes through the mounting hole 129 into the fixing bracket 128, thereby providing support for the second end of the connecting pipe 153 and making the installation of the connecting pipe 153 more stable when the length of the connecting pipe 153 is long.
[0079] Since the SCR reactor 100 is cylindrical in shape, i.e., the shell 110 is cylindrical, the lengths of the various accommodating spaces 121 arranged along the vertical direction D3 are adapted to the shape of the shell 110 to ensure a large number of catalyst modules 140 can be installed within the shell 110. In other words, the lengths of the accommodating spaces 121 arranged along the vertical direction D3 gradually decrease from the middle of the shell 110 to the top or bottom of the shell 110. Therefore, correspondingly, the length of the sootblowing pipe 151 is also adjusted according to the length of the accommodating spaces 121. Thus, among the sootblowing pipes 151 arranged along the vertical direction D3, the sootblowing pipe 151 located in the middle position has a longer length and can be inserted through the mounting hole 129 to the fixing bracket 128 at the corresponding height, thereby making it more stable.
[0080] Optionally, combined Figure 6As shown, the second ends of each fixed pipe fitting 152 are aligned in the transverse direction D2. Specifically, the first flanges 154 of each fixed pipe fitting 152 are aligned in the transverse direction D2, thereby ensuring that the fixed pipe fitting 152 has a sufficient length while maintaining a gap between it and the support plate 127, making the overall installation of the sootblowing pipe 151 more stable. In particular, the fixed pipe fitting 152 is welded to the shell 110, making the connection more secure.
[0081] Therefore, in the longer soot blowing pipe 151, the connecting pipe 153 is also longer. Therefore, a fixing bracket 128 needs to be set at the height of the corresponding connecting pipe 153 on the bracket 120 to improve the installation strength of the connecting pipe 153 and the soot blowing pipe 151 as a whole, so that the installation of the soot blowing pipe 151 is more stable.
[0082] Optionally, refer to Figure 3 The SCR reactor 100 includes at least two supports 120 and at least two soot blowing assemblies 150. The supports 120 are arranged along the axial direction D1 of the shell 110, and the at least two soot blowing assemblies 150 are arranged in a one-to-one correspondence with the at least two supports 120, so that multiple pairs of catalyst modules 140 can be installed on the axial direction D1 of the shell 110, and soot blowing pipes 151 are provided for each set of catalyst modules 140 for soot blowing operation, thereby improving the working performance of the SCR reactor 100.
[0083] Furthermore, each bracket 120 is detachably connected to the housing 110, thereby facilitating the removal of the bracket 120 near the end of the housing 110 by personnel, and subsequently allowing for the inspection and maintenance of the catalyst on the bracket 120 inside the housing 110. Specifically, the panel frame 124 of the bracket 120 can be fixed to the inner surface of the bracket 120 by fasteners 131, thereby enabling the bracket 120 to be detachably installed from the housing 110, facilitating easy assembly and disassembly.
[0084] Optionally, refer to Figure 4 The bracket 120 is provided with a slot 126 corresponding to the position of the catalyst module 140, so that the catalyst module 140 has a large exposed area when it is installed on the bracket 120, which facilitates the blowing of soot from the catalyst module 140 and also facilitates the reaction of the catalyst module 140.
[0085] Optionally, refer to Figure 3 and Figure 4The support 120 also includes a catalyst pressure plate 130, which extends in the transverse direction D2 and is connected to the side wall of the panel frame 124 by fasteners 131. When the catalyst module 140 is installed into the accommodating space 121, the catalyst module 140 protrudes from the accommodating space 121 in the axial direction D1. When the catalyst pressure plate 130 is installed on the panel frame 124, it can press the top surface of the catalyst module 140, so that the catalyst module 140 is firmly fixed on the support 120.
[0086] This application also provides a maintenance method for an SCR reactor 100, which is used according to the above-described SCR reactor 100. The maintenance method for the SCR reactor 100 includes:
[0087] Remove the connecting fitting 153 of the soot blowing pipe 151 to expose the portion of the accommodating space 121 that is not covered by the fixing fitting 152.
[0088] Remove the catalyst module 140 contained in the portion of the accommodating space 121 that is not obstructed by the fixing fitting 152;
[0089] The catalyst module 140, which was contained in the portion of the moving accommodating space 121 that was blocked by the fixing fitting 152, is moved to the portion of the accommodating space 121 that is not blocked by the fixing fitting 152, and then the catalyst module 140 is removed.
[0090] The maintenance method for the SCR reactor 100 according to this application reduces the space occupied in the ship's engine room when maintaining the SCR reactor 100 and reduces the operational difficulty of the maintenance operation of the SCR reactor 100.
[0091] Specifically, refer to Figure 3 as well as Figures 5 to 11 The maintenance methods for SCR reactor 100 include:
[0092] S1. Remove connecting fitting 153, such as Figure 5 and Figure 6 As shown, the connecting fittings 153 of each soot blowing pipe 151 are removed, so that the part of the accommodating space 121 that violates the obstruction of the fixed fittings 152 is exposed.
[0093] S2, Remove catalyst pressure plate 130, and combine Figure 7 As shown, this unlocks all catalyst modules 140 on the support 120, allowing them to be removed;
[0094] S3. Remove the catalyst module 140 from the first region 122, such as... Figure 8 As shown, this allows for the replacement or repair of the catalyst module 140 housed in the first region 122.
[0095] S4. Remove the portion of catalyst module 140 from the second region 123 that is not obscured by the fixed fitting 152, such as... Figure 9 As shown, this provides unobstructed access space for other catalyst modules 140 in the second region 123, which are not blocked by the fixed fittings 152.
[0096] S5. Move the remaining catalyst modules 140 in the second region 123 to the pick-and-place space, such as... Figure 10 and Figure 11 As shown, the remaining catalyst modules 140 are then taken out sequentially through the take-up and put-down space;
[0097] S6. Perform maintenance on the removed catalyst module 140.
[0098] Figure 5 An SCR reactor 100 according to a specific embodiment of the present application is shown, wherein the accommodating space 121 formed on the support 120 is capable of accommodating 37 catalyst modules 140 adapted to the shape of the shell 110 of the SCR reactor 100, and the catalyst modules 140 are arranged from left to right in the form of 3, 5, 7, 7, 7, 5, 3 per column.
[0099] Figure 12 Also shown is an SCR reactor 100 according to a specific embodiment of the present application, wherein the accommodating space 121 formed on the support 120 is capable of accommodating 10 catalyst modules 140 adapted to the shape of the shell 110 of the SCR reactor 100, and the catalyst modules 140 are arranged from left to right in a pattern of 3, 4, 3 per column.
[0100] Figure 13 Also shown is an SCR reactor 100 according to a specific embodiment of the present application, wherein the accommodating space 121 formed on the support 120 is capable of accommodating 48 catalyst modules 140 adapted to the shape of the shell 110 of the SCR reactor 100, and the catalyst modules 140 are arranged from left to right in the form of 4, 6, 6, 8, 8, 6, 6, 4 per column.
[0101] It is understood that the scope of protection of the SCR reactor 100 according to this application also includes other SCR reactors 100 with different numbers and arrangements of catalyst modules 140, all of which should be within the scope of protection of the SCR reactor 100 of this application.
[0102] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “setup” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.
[0103] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this application, and all such variations and modifications fall within the scope of protection claimed in this application.
Claims
1. An SCR reactor, characterized in that, The SCR reactor includes: case; A support, which is disposed within the housing and at least partially configured to form an accommodating space; At least two catalyst modules, wherein at least two catalyst modules are disposed within the accommodating space and arranged in a lateral direction; and A soot blowing assembly, comprising a soot blowing tube extending in the transverse direction and disposed outside the accommodating space in the axial direction of the housing, the soot blowing tube comprising a fixing fitting and a connecting fitting, the first end of the fixing fitting passing through the housing and fixedly connected to the housing, the second end of the fixing fitting being detachably connected to the connecting fitting; Wherein, the portion of the accommodating space not obstructed by the fixed pipe fitting has a dimension in the lateral direction that is not less than the dimension of the catalyst module in the lateral direction.
2. The SCR reactor according to claim 1, characterized in that, The bracket includes a support plate extending in a vertical direction to the accommodating space, the accommodating space including a first region and a second region disposed on both sides of the support plate in a transverse direction, and the fixing tube is located on the side of the support plate closer to the second region in the transverse direction. Along the transverse direction, the distance between the second end of the fixed pipe and the support plate is not less than the dimension of the catalyst module along the transverse direction.
3. The SCR reactor according to claim 2, characterized in that, Along the lateral direction, the distance between the second end of the fixed tube and the support plate is less than twice the dimension of the catalyst module along the lateral direction.
4. The SCR reactor according to claim 2, characterized in that, The bracket is at least partially configured to form at least two of the receiving spaces arranged along the vertical direction, and the soot blowing assembly includes soot blowing pipes in a number consistent with the number of the receiving spaces, and the soot blowing pipes are arranged one-to-one with the receiving spaces along the vertical direction.
5. The SCR reactor according to claim 4, characterized in that, The second ends of each of the fixed pipe fittings are aligned along the lateral direction.
6. The SCR reactor according to claim 4, characterized in that, The bracket also includes a fixing frame, which is located on the side of the bracket away from the fixing pipe along the lateral direction; At least a portion of the first end of the connecting pipe is connected to the second end of the fixing pipe, and the second end of the connecting pipe is connected to the fixing bracket.
7. The SCR reactor according to claim 4, characterized in that, The soot blowing assembly includes an air inlet pipe, and the fixing fittings of each of the soot blowing pipes arranged along the vertical direction are detachably connected to the air inlet pipe.
8. The SCR reactor according to claim 1, characterized in that, The support has slots corresponding to the positions of the catalyst modules.
9. The SCR reactor according to any one of claims 1 to 7, characterized in that, The SCR reactor includes at least two supports and at least two soot blowing assemblies, the supports being arranged along the axial direction of the shell, and the at least two soot blowing assemblies being arranged in a one-to-one correspondence with the at least two supports; and / or The bracket is detachably connected to the housing.
10. A method for overhauling an SCR reactor, used in any one of claims 1 to 9, characterized in that, The maintenance methods for the SCR reactor include: Remove the connecting fitting of the soot blowing pipe so that the portion of the accommodating space not covered by the fixing fitting is exposed; Remove the catalyst module contained in the portion of the accommodating space not obstructed by the fixed fitting; Move the catalyst module, which was contained in the portion of the accommodating space that was blocked by the fixed pipe, to the portion of the accommodating space that was not blocked by the fixed pipe, and then remove the catalyst module.