Online replacement of flexible catalyst de-nox reactor device

Abstract

The utility model relates to denitration reactor technical field discloses a kind of online replacement flexible catalyst denitration reactor device, including bin, and the two ends of bin are respectively provided with air inlet and air outlet, and the inner chamber of bin is provided with several supports, by being provided with several openings in bin side, and catalyst assembly is placed on corresponding support by being moved through opening, equipped with cover plate and fixed assembly simultaneously, the online replacement function of catalyst assembly is realized, without stopping the operation of entire denitration reactor, only need to open the cover plate of corresponding opening, specific catalyst assembly can be disassembled, replaced or maintained, equipment downtime is greatly reduced, the continuous operation efficiency of denitration system is improved, the cooperation of cover plate and fixed assembly can effectively guarantee the sealing performance of opening, prevent gas leakage in bin, ensure that denitration reaction is stably carried out in closed environment, both guarantee the reaction efficiency, and avoid the pollution caused by gas leakage to environment.

Description

Technical Field

[0001] This utility model relates to the field of denitrification reactor technology, and in particular to a denitrification reactor device for online replacement of flexible catalyst. Background Technology

[0002] As the Chinese people have increasingly higher requirements for their living environment and the country has become more stringent in its environmental protection efforts, all sectors are facing environmental governance challenges. Sulfur dioxide and nitrogen oxides are the main pollutants in flue gas. Selective reduction (SCR) denitrification technology, as a mature and economical denitrification technology, has been promoted and applied in recent years in industries such as power, gas boilers, alumina, steel, and chemicals.

[0003] In existing technologies, denitrification catalysts are basically honeycomb catalysts, and most reactors are vertical reactors. The catalyst module boxes are heavy and generally require the use of cranes and other tools for installation. During installation, the operating kiln needs to be shut down for cooling, which leads to the shutdown of the entire unit and affects the plant's efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing an online flexible catalyst replacement denitrification reactor device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An online replaceable flexible catalyst denitrification reactor device includes a chamber, with an air inlet and an air outlet respectively provided at both ends of the chamber. The inner cavity of the chamber is provided with several supports, and one side of the chamber is provided with several openings. A catalyst assembly is provided on one side of each of the openings, and the catalyst assembly is movably mounted on the corresponding support through the opening. A cover plate is provided on one side of the opening to seal the opening, and a fixing component is provided on one side of the cover plate to fix the cover plate.

[0006] Preferably, the internal cavity of the chamber includes an air inlet chamber and an air outlet chamber, which are respectively connected to an air inlet and an air outlet. The air inlet chamber and the air outlet chamber are separated by a catalyst assembly, and the support and the catalyst assembly are both located in the air inlet chamber.

[0007] Preferably, the fixing component includes a plurality of bolts disposed on one side of the cover plate, the bolts being movably threaded through the cover plate and connected to the hopper body.

[0008] Preferably, the catalyst assembly is supported by a first support member on the side of the cover plate between the catalyst assembly and the adjacent catalyst assembly.

[0009] Preferably, the catalyst assembly and the adjacent catalyst assembly on the side away from the cover plate are supported by a second support member.

[0010] Preferably, the catalyst assembly is a cylindrical flexible denitrification catalyst.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention enables online replacement of catalyst components by setting several openings on one side of the chamber and placing the catalyst components through the openings on corresponding supports. Equipped with a cover plate and fixing components, it allows for the replacement of the catalyst components online without stopping the entire denitrification reactor. Only the cover plate of the corresponding opening needs to be opened to disassemble, replace, or maintain specific catalyst components, significantly reducing equipment downtime and improving the continuous operating efficiency of the denitrification system. The cooperation between the cover plate and the fixing components effectively ensures the sealing performance of the openings, preventing gas leakage from the chamber and ensuring the stable conduct of the denitrification reaction in a closed environment. This guarantees reaction efficiency while avoiding environmental pollution caused by gas leakage. Attached Figure Description

[0012] Figure 1 This is an overall schematic diagram of an online flexible catalyst replacement denitrification reactor device proposed in this utility model; Figure 2 This is a schematic diagram of the internal cavity of a denitrification reactor device for online replacement of flexible catalyst proposed in this utility model; Figure 3 This is a schematic diagram of the catalyst assembly of an online flexible catalyst replacement denitrification reactor device proposed in this utility model; Figure 4 This is a schematic diagram of the cover plate of an online replaceable flexible catalyst denitrification reactor device proposed in this utility model.

[0013] In the diagram: 1. Chamber; 2. Air inlet; 3. Air outlet; 4. Support; 5. Opening; 6. Catalyst assembly; 7. Cover plate; 8. Air inlet chamber; 9. Air outlet chamber; 10. Bolt; 11. First support member; 12. Second support member. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figures 1-4An online replaceable flexible catalyst denitrification reactor device includes a chamber 1, with an air inlet 2 and an air outlet 3 respectively provided at both ends of the chamber 1. The inner cavity of the chamber 1 is provided with several supports 4, and one side of the chamber 1 is provided with several openings 5. A catalyst assembly 6 is provided on one side of each of the several openings 5, and the catalyst assembly 6 is movably installed on the corresponding support 4 through the opening 5. A cover plate 7 is provided on one side of the opening 5 to seal the opening 5, and a fixing component is provided on one side of the cover plate 7 to fix the cover plate 7.

[0016] The catalyst assembly 6 is a cylindrical flexible catalyst, which is existing technology and will not be described in detail here.

[0017] In use, this device features several openings 5 ​​on one side of the chamber 1, through which the catalyst assembly 6 is moved and placed on the corresponding support 4. Equipped with a cover plate 7 and a fixing component, it enables online replacement of the catalyst assembly 6. This allows for disassembly, replacement, or maintenance of the catalyst assembly 6 without stopping the entire denitrification reactor; simply opening the cover plate 7 of the corresponding opening 5 significantly reduces equipment downtime and improves the continuous operating efficiency of the denitrification system. The cooperation between the cover plate 7 and the fixing component effectively ensures the sealing performance at the openings 5, preventing gas leakage within the chamber 1 and ensuring the stable conduct of the denitrification reaction in a closed environment. This guarantees reaction efficiency while avoiding environmental pollution caused by gas leakage.

[0018] Furthermore, the inner cavity of the chamber 1 includes an inlet chamber 8 and an outlet chamber 9, which are connected to the inlet 2 and outlet 3, respectively. The inlet chamber 8 and outlet chamber 9 are separated by a catalyst assembly 6, and both the support 4 and the catalyst assembly 6 are located within the inlet chamber 8. This division of the inner cavity of the chamber 1 into the inlet chamber 8 and outlet chamber 9, separated by the catalyst assembly 6, optimizes the gas flow path and reaction environment. The inlet chamber 8 receives the gas to be treated, and the gas undergoes a denitrification reaction as it flows through the catalyst assembly 6 before entering the outlet chamber 9 for discharge. This structural design allows the gas to fully contact the catalyst assembly 6, improving the efficiency and effectiveness of the denitrification reaction. The fact that both the support 4 and the catalyst assembly 6 are located within the inlet chamber 8 facilitates centralized management and maintenance of the catalyst assembly 6, further enhancing the practicality and operability of the equipment.

[0019] Furthermore, the fixing component includes several bolts 10 disposed on one side of the cover plate 7. The bolts 10 are movably threaded through the cover plate 7 and connected to the chamber body 1. The fixing component uses several bolts 10, and the bolts 10 are movably threaded through the cover plate 7 and connected to the chamber body 1, which ensures the connection stability and sealing between the cover plate 7 and the chamber body 1. The bolt 10 connection method is simple and convenient to operate, and facilitates quick disassembly and installation of the cover plate 7, meeting the requirement for quick opening and closing of the cover plate 7 when replacing the catalyst component 6 online. The threaded connection method allows the cover plate 7 (a rubber sealing gasket can be set on the surface of the cover plate 7 to ensure sealing, not shown in the figure) to fit tightly against the chamber body 1, effectively preventing gas leakage from the opening 5, and ensuring the normal operation and environmental performance of the equipment.

[0020] Furthermore, the catalyst assembly 6 and the adjacent catalyst assembly 6 are supported by the first support member 11 on the side near the cover plate 7. When replacing the catalyst assembly 6, this side is prone to shaking or displacement due to external forces (such as touching during handling). During operation, the flue gas entering from the air inlet 2 will impact the catalyst assembly 6. If the side near the cover plate 7 lacks support, problems such as component tilting or deformation may occur. The setting of the first support member 11 can effectively counteract these external force effects, ensuring that the adjacent catalyst assemblies 6 maintain a stable distance and vertical state in the area near the cover plate 7, avoiding poor flue gas flow or reduced catalyst contact area due to component tilting, and ensuring the uniformity and efficiency of the denitrification reaction.

[0021] Furthermore, the catalyst assembly 6 and the side of the adjacent catalyst assembly 6 away from the cover plate 7 are supported by the second support member 12. The second support member 12 can fix and support the catalyst assembly 6 from the far end, ensuring that the entire catalyst assembly 6 maintains a stable posture and uniform spacing from the end near the cover plate 7 to the end away from the cover plate 7, so that the flue gas is evenly distributed in the chamber 1 and fully contacts each part of the catalyst, avoiding the situation of insufficient local reaction.

[0022] Furthermore, the catalyst assembly 6 adopts a cylindrical flexible denitrification catalyst. From the perspective of reaction efficiency, the cylindrical structure has a larger specific surface area (i.e., the contact area between the catalyst and the flue gas per unit volume) compared to the traditional flat plate catalyst, which can significantly increase the contact opportunities between the flue gas and the catalyst, improve the adsorption and reaction rate of nitrogen oxides, and further optimize the denitrification efficiency.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An online replacement flexible catalyst de-NOx reactor device comprising a cartridge body (1), characterized in that: The two ends of the chamber (1) are respectively provided with an air inlet (2) and an air outlet (3). The inner cavity of the chamber (1) is provided with several supports (4). The side of the chamber (1) is provided with several openings (5). A catalyst assembly (6) is provided on one side of each of the openings (5). The catalyst assembly (6) moves through the opening (5) and is mounted on the corresponding support (4). A cover plate (7) is provided on one side of the opening (5) to seal the opening (5), and a fixing component is provided on one side of the cover plate (7) to fix the cover plate (7).

2. The online replacement flexible catalyst de-NOx reactor apparatus according to claim 1, wherein: The inner cavity of the chamber (1) includes an air inlet chamber (8) and an air outlet chamber (9). The air inlet chamber (8) and the air outlet chamber (9) are connected to the air inlet (2) and the air outlet (3) respectively. The air inlet chamber (8) and the air outlet chamber (9) are separated by a catalyst assembly (6), and the support (4) and the catalyst assembly (6) are both located in the air inlet chamber (8).

3. The online replacement flexible catalyst de-NOx reactor apparatus of claim 1, wherein: The fixing assembly includes several bolts (10) disposed on one side of the cover plate (7), the bolts (10) being threaded through the cover plate (7) and connected to the chamber body (1).

4. The online replacement flexible catalyst de-NOx reactor apparatus of claim 2, wherein: The catalyst assembly (6) is supported by a first support member (11) on the side of the cover plate (7) between the catalyst assembly (6) and the adjacent catalyst assembly (6).

5. The online replacement flexible catalyst de-NOx reactor apparatus of claim 1, wherein: The catalyst assembly (6) and the adjacent catalyst assembly (6) on the side away from the cover plate (7) are supported by a second support member (12).

6. The online replacement flexible catalyst de-NOx reactor apparatus of claim 1, wherein: The catalyst assembly (6) is a cylindrical flexible denitrification catalyst.

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