A catalytic combustion device with catalyst replacement convenience
By using high-temperature resistant sealing rings, return pipes, and air supply components in the catalytic combustion unit, the problem of exhaust gas leakage during catalyst replacement was solved, achieving efficient replacement without exhaust gas leakage and rapid catalyst cooling, ensuring continuous operation of the equipment and environmental safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN LONGXIN 3D ARRAY TECH CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-26
Smart Images
Figure CN224415173U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a catalytic combustion device that facilitates catalyst replacement. Background Technology
[0002] Catalytic combustion of waste gas is a process that uses a catalyst to catalyze the combustion of harmful organic compounds at relatively low temperatures. ) or combustible gases are converted into harmless substances (such as and (Technology)
[0003] For example, the utility model patent with application number CN202222079746.9 proposes a catalytic combustion device for exhaust gas. When it is necessary to replace the catalyst placed in the catalyst placement basket, the lower catalyst placement basket is still set inside the inner cavity, while the upper catalyst placement basket is located outside the inner cavity. After the stop door is pulled upward to open the box inlet, the catalyst placement basket is pushed into the inner cavity along the limiting plate by the driving cylinder. Finally, the stop door is pushed downward, and the lower catalyst placement basket is pulled out by another set of independent driving cylinders to replace the catalyst in the catalyst placement basket, waiting for the next feeding. During the replacement of the catalyst placement basket, there is no need to stop the supply of exhaust gas, and the combustion box can continue to work, which improves the efficiency of exhaust gas catalytic combustion.
[0004] However, during the catalyst replacement process, it is necessary to open and close the inlet of the housing. Inevitably, some exhaust gas will escape, affecting the environment. Utility Model Content
[0005] In view of this, it is necessary to provide a catalytic combustion device that facilitates catalyst replacement, in order to solve the problem that during the catalyst replacement process, it is necessary to open and close the inlet of the housing, which inevitably causes some exhaust gas to escape and affect the environment.
[0006] This invention provides a catalytic combustion device for easy catalyst replacement, comprising a reaction chamber, two high-temperature resistant sealing rings, a cooling chamber, a reflux pipe, and an air supply assembly. The reaction chamber has inlet and outlet ports on both sides for the catalyst module to move into or out of the chamber. The distance between the two inlet and outlet ports is less than the length of the catalyst module along its direction of movement. The two high-temperature resistant sealing rings are respectively installed at the inlet and outlet ports of the reaction chamber for sealing contact with the catalyst module. The interior of the cooling chamber is connected to one of the inlet and outlet ports. One end of the reflux pipe is connected to the top of the cooling chamber, and the other end is connected to the reaction chamber. A valve is installed on the reflux pipe. The air supply assembly has an inlet for connecting to external air and an outlet connected to the cooling chamber.
[0007] Furthermore, the cooling box includes a box body and a box cover. The box body has an opening on the side away from the inlet / outlet port that communicates with it. The box cover is hinged to the opening of the box body for opening and closing the opening.
[0008] Furthermore, the reflux pipe is connected to the portion of the reaction chamber located below the catalyst module.
[0009] Furthermore, the high-temperature resistant sealing ring is a graphite sealing ring.
[0010] Furthermore, the air supply assembly includes a fan, a main air supply pipe, and branch air supply pipes. The fan is fixedly installed at the bottom of the cooling box. The air outlet of the fan is connected to the branch air supply pipes via the main air supply pipes. The branch air supply pipes are fixedly installed on the inner bottom wall of the cooling box. The top of the branch air supply pipes has a plurality of air supply holes arranged sequentially along its length.
[0011] Furthermore, it also includes a bracket, which is fixedly installed inside the cooling box above the air supply branch pipe. The top of the bracket has a support surface, which is set lower than the bottom of the inlet and outlet.
[0012] Furthermore, the support is frame-shaped, and multiple parallel rollers are installed in the cavity of the support. The multiple rollers are parallel and rotatably connected to the support, and the rollers are arranged perpendicular to the extension direction of the inlet and outlet.
[0013] Furthermore, it also includes a guide assembly installed on the inner wall of the reaction chamber, the guide assembly being slidably connected to the catalyst module.
[0014] Furthermore, the guiding assembly includes two guide plates disposed opposite to each other on the inner walls of the reaction chamber, with the two guide plates recessed inward on opposite sides to form grooves, and the two sides of the catalyst module being slidably connected to the two grooves respectively.
[0015] Furthermore, the guide assembly also includes a plurality of balls, and the guide plate has a plurality of spherical grooves arranged sequentially along its length on the inner top wall, side wall and inner bottom wall of the groove, and the plurality of balls are respectively connected to the plurality of spherical grooves.
[0016] Compared with existing technologies, when a catalyst module needs to be replaced, simply place the new catalyst module against one of the inlet / outlet ports, bringing the old and new catalyst modules into contact. Apply external force to force the new catalyst module through the inlet / outlet and insert it into the reaction chamber until the old catalyst module is completely removed from the other inlet / outlet and falls into the cooling chamber. At this time, the valves and air supply components are opened, and the exhaust gas carried on the old catalyst module is returned to the reaction chamber through the return pipe. At the same time, it can accelerate the cooling process of the old catalyst module. After it has completely cooled down, it can be removed. Attached Figure Description
[0017] Figure 1 A schematic diagram of the overall structure of a catalytic combustion device for easy catalyst replacement provided in an embodiment of this utility model;
[0018] Figure 2 for Figure 1 Enlarged diagram of section A in the middle;
[0019] Figure 3 for Figure 1 Schematic diagram of the support structure;
[0020] Figure 4 for Figure 1 Sectional view of plane AA;
[0021] Figure 5 for Figure 4 Enlarged schematic diagram of section B. Detailed Implementation
[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.
[0023] like Figure 1-2As shown, this utility model provides a catalytic combustion device for easy catalyst replacement, including a reaction chamber 100, two high-temperature resistant sealing rings 200, a cooling chamber 300, a reflux pipe 400, and an air supply assembly 600. The reaction chamber 100 has inlet and outlet ports 110 on both sides for the catalyst module M to move into or out of the reaction chamber 100 along the inlet and outlet ports 110. The distance between the two inlet and outlet ports 110 is less than the length of the catalyst module M along its moving direction. The two high-temperature resistant sealing rings 200... 00 is installed at the inlet and outlet 110 of the reaction chamber 100 to seal against the catalyst module M; the interior of the cooling chamber 300 is connected to one of the inlet and outlet 110; one end of the return pipe 400 is connected to the top of the cooling chamber 300, and the other end of the return pipe 400 is connected to the reaction chamber 100. A valve 410 is installed on the return pipe 400. The air inlet of the air supply assembly 600 is used to connect to external air, and the air outlet of the air supply assembly 600 is connected to the cooling chamber 300.
[0024] When it is necessary to replace the catalyst module M, simply place the new catalyst module M against one of the inlet / outlet ports 110, so that the old and new catalyst modules M are in contact. Apply external force to make the new catalyst module M pass through the inlet / outlet port 110 and be inserted into the reaction tank 100 until the old catalyst module M is completely removed from the other inlet / outlet port 110 and falls into the cooling tank 300. At this time, the valve 410 and the air supply assembly 600 are both opened, and the exhaust gas carried on the old catalyst module M is returned to the reaction tank 100 through the return pipe 400. At the same time, it can accelerate the cooling process of the old catalyst module M. After it has been completely cooled, it can be taken out.
[0025] In this embodiment, the reaction chamber 100 is used to carry the catalyst module M. An air inlet 120 is provided on the side wall below the reaction chamber 100 to facilitate the introduction of the waste gas to be treated into the reaction chamber 100. As the waste gas flows upward through the catalyst module M, it is discharged through the air outlet 130 at the top of the reaction chamber 100.
[0026] In this embodiment, two high-temperature resistant sealing rings 200 are respectively installed at the inlet and outlet ports 110 of the reaction chamber 100 to seal against the catalyst module M and prevent air leakage at the gap between the catalyst module M and the inlet and outlet ports 110.
[0027] Among them, the high-temperature resistant sealing ring 200 is a graphite sealing ring. The temperature range of the catalytic combustion reaction of the graphite sealing ring using a low-temperature catalyst of precious metal is 200~350°C, while the temperature range of the graphite sealing ring can reach -200°C to 500-600°C. Therefore, it can effectively avoid damage to the sealing ring.
[0028] The cooling box 300 in this embodiment includes a box body 310 and a box cover 320. The box body 310 has an opening on the side away from the inlet / outlet 110 connected to it. The box cover 320 is hinged to the opening of the box body 310 for opening and closing the opening.
[0029] In this embodiment, the reflux pipe 400 is connected to the lower part of the reaction chamber 100 located in the catalyst module M. This effectively prevents the direct discharge of waste gas that has not undergone catalytic combustion.
[0030] The air supply assembly 600 in this embodiment includes a fan 610, a main air supply pipe 620, and a branch air supply pipe 630. The fan 610 is fixedly installed at the bottom of the cooling box 300. The air outlet of the fan 610 is connected to the branch air supply pipe 630 via the main air supply pipe 620. The branch air supply pipe 630 is fixedly installed on the inner bottom wall of the cooling box 300. The top of the branch air supply pipe 630 has a plurality of air supply holes arranged sequentially along its length.
[0031] This embodiment also includes a bracket 500, which is fixedly installed inside the cooling box 300 above the air supply branch pipe 630. The top of the bracket 500 has a support surface, which is set lower than the bottom of the inlet / outlet 110.
[0032] Among them, such as Figure 3 As shown, the bracket 500 is frame-shaped, and multiple parallel rollers 510 are installed in the cavity of the bracket 500. The multiple rollers 510 are parallel and rotatably connected to the bracket 500. The rollers 510 are arranged perpendicular to the extension direction of the inlet and outlet 110.
[0033] like Figure 4 As shown, this embodiment also includes a guide assembly 700 installed on the inner wall of the reaction chamber 100, and the guide assembly 700 is slidably connected to the catalyst module M.
[0034] like Figure 5 As shown, in one embodiment, the guide assembly 700 includes two guide plates 710 disposed opposite to each other on the inner walls of the reaction chamber 100. The two guide plates 710 are recessed inward on opposite sides to form grooves 711. The two sides of the catalyst module M are slidably connected to the two grooves 711 respectively.
[0035] The guide assembly 700 also includes multiple balls 720. The guide plate 710 has multiple spherical grooves 712 arranged sequentially along its length on the inner top wall, side wall and inner bottom wall of the groove 711. The multiple balls 720 are respectively connected to the multiple spherical grooves 712.
[0036] The catalyst module M in this embodiment includes a sliding frame M1, two parallel metal meshes M2, and a catalyst body M3. The sliding frame M1 is slidably connected to the guide assembly 700 and the inlet / outlet 110. The two metal meshes M2 are respectively arranged at the top and bottom of the inner cavity of the sliding frame M1, and the catalyst body M3 is filled in the position between the two metal meshes M2.
[0037] Compared with existing technologies: When it is necessary to replace the catalyst module M, simply place the new catalyst module M against one of the inlet / outlet ports 110, so that the old and new catalyst modules M are in contact. Apply external force to make the new catalyst module M pass through the inlet / outlet port 110 and be inserted into the reaction tank 100 until the old catalyst module M is completely removed from the other inlet / outlet port 110 and falls into the cooling tank 300. At this time, the valve 410 and the air supply assembly 600 are both opened. The exhaust gas carried on the old catalyst module M is returned to the reaction tank 100 through the return pipe 400. At the same time, the cooling process of the old catalyst module M can be accelerated. After it is completely cooled, it can be taken out.
[0038] 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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A catalytic combustion device with easily replaceable catalyst, characterized in that, Includes a reaction chamber, two high-temperature resistant sealing rings, a cooling box, a reflux pipe, and an air supply assembly; The reaction chamber has inlet and outlet ports on both sides, so that the catalyst module can be moved into or out of the reaction chamber along the inlet and outlet ports. The distance between the two inlet and outlet ports is less than the length of the catalyst module along its moving direction. The two high-temperature resistant sealing rings are respectively installed at the inlet and outlet of the reaction tank for sealing contact with the catalyst module; The interior of the cooling box is connected to one of the inlet and outlet ports; One end of the reflux pipe is connected to the top of the cooling tank, and the other end of the reflux pipe is connected to the reaction tank. A valve is installed on the reflux pipe. The air inlet of the air supply assembly is used to receive external air, and the air outlet of the air supply assembly is connected to the cooling box.
2. The catalytic combustion device with easy catalyst replacement according to claim 1, characterized in that, The cooling box includes a box body and a box cover. The box body has an opening on the side away from the inlet and outlet that are connected to it. The box cover is hinged to the opening of the box body for opening and closing the opening.
3. The catalytic combustion device with easy catalyst replacement according to claim 1, characterized in that, The reflux pipe is connected to the portion of the reaction chamber located below the catalyst module.
4. The catalytic combustion device with easy catalyst replacement according to claim 1, characterized in that, The high-temperature resistant sealing ring is a graphite sealing ring.
5. The catalytic combustion device with easy catalyst replacement according to claim 1, characterized in that, The air supply assembly includes a fan, a main air supply pipe, and branch air supply pipes. The fan is fixedly installed at the bottom of the cooling box. The air outlet of the fan is connected to the branch air supply pipes via the main air supply pipes. The branch air supply pipes are fixedly installed on the inner bottom wall of the cooling box. The top of the branch air supply pipes has a plurality of air supply holes arranged sequentially along its length.
6. The catalytic combustion device with easy catalyst replacement according to claim 5, characterized in that, It also includes a bracket, which is fixedly installed inside the cooling box above the air supply branch pipe. The top of the bracket has a support surface, which is set lower than the bottom of the inlet and outlet.
7. The catalytic combustion device with easy catalyst replacement according to claim 6, characterized in that, The support is frame-shaped, and multiple parallel rollers are installed in the cavity of the support. The multiple rollers are parallel and rotatably connected to the support, and the rollers are arranged perpendicular to the extension direction of the inlet and outlet.
8. The catalytic combustion device with easy catalyst replacement according to claim 1, characterized in that, It also includes a guide assembly installed on the inner wall of the reaction chamber, the guide assembly being slidably connected to the catalyst module.
9. The catalytic combustion device with easy catalyst replacement according to claim 8, characterized in that, The guiding assembly includes two guide plates disposed opposite to each other on the inner walls of the reaction chamber. The two guide plates are recessed inward on opposite sides to form grooves, and the two sides of the catalyst module are slidably connected to the two grooves respectively.
10. The catalytic combustion device with easy catalyst replacement according to claim 9, characterized in that, The guide assembly also includes multiple balls. The guide plate has multiple spherical grooves arranged sequentially along its length on the inner top wall, side wall, and inner bottom wall of the groove. The multiple balls are respectively connected to the multiple spherical grooves.