Catalyst protection assembly and denitration catalyst use device

Abstract

The utility model relates to flue gas purification equipment field, concretely is a kind of catalyst protection assembly and denitration catalyst using equipment.The component includes support frame, outer cylinder, filler cylinder, connecting assembly and support assembly.Support frame is round mounting hole and air inlet hole, outer cylinder is installed in hole, filler cylinder is placed in outer cylinder and fills catalyst.Connecting assembly contains fixed block, annular groove, rectangular recess and notch, for the fixation and release of outer cylinder.Support assembly contains annular baffle and guide rod, and it supports the function.Equipment includes above-mentioned component and denitration tower, and tower is equipped with flue gas inlet and outlet.Flue gas enters from inlet, and it is reacted with catalyst through air inlet hole, rectangular vent hole of filler cylinder, and after purification, it is filtered through round through hole, arc filter plate, and finally discharged by outlet.The structure is convenient for catalyst replacement and maintenance, improves denitration efficiency and reduces emission pollution.

Description

Technical Field

[0001] This utility model relates to the field of denitrification catalyst technology, and in particular to a catalyst protection component and a denitrification catalyst application device. Background Technology

[0002] In industrial production, especially in sectors such as chemicals and power generation, combustion processes produce large amounts of flue gas containing nitrogen oxides (NOx). NOx is a major air pollutant that not only contributes to acid rain, causing serious damage to soil, water bodies, and vegetation, but also participates in the formation of photochemical smog, harming human health and impacting the ecological environment and climate.

[0003] With increasing environmental awareness and increasingly stringent environmental regulations, the requirements for controlling NOx emissions from industrial exhaust are becoming more stringent. Traditional denitrification methods have certain limitations. For example, some denitrification equipment has a complex structure and high installation and maintenance costs; some denitrification technologies have low denitrification efficiency and are difficult to meet strict emission standards; and some equipment suffers from inconvenient catalyst replacement during operation, leading to long downtime and affecting production efficiency.

[0004] Therefore, developing a denitrification catalyst application device that is highly efficient, structurally sound, easy to maintain, and effectively reduces NOx content in exhaust gas is of significant practical importance. This catalyst protection component, applied to the denitrification catalyst application device, effectively solves the aforementioned problems, providing an efficient and reliable solution for industrial exhaust gas denitrification. Utility Model Content

[0005] The purpose of this invention is to address the limitations of existing denitrification methods, such as the complex structure and high installation and maintenance costs of some denitrification equipment, the low denitrification efficiency of some denitrification technologies, which makes it difficult to meet strict emission standards, and the inconvenience of catalyst replacement during operation, which leads to long downtime and affects production efficiency. Therefore, this invention proposes a catalyst protection component and a denitrification catalyst application device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A catalyst protection assembly includes a support frame with a circular mounting hole. A plurality of air inlets are formed around the circular mounting hole on the top of the outer wall of the support frame, and the air inlets are connected to the circular mounting hole.

[0008] The outer cylinder is detachably installed in the circular mounting hole and the circular mounting hole is sealed.

[0009] A packing cylinder is slidably housed inside the outer cylinder, and the packing cylinder is used to hold the denitrification catalyst;

[0010] A connecting component is disposed between the circular mounting hole and the outer cylinder to enable a detachable connection between the two.

[0011] A support assembly, disposed at the bottom of the support frame, is used to provide support for the outer cylinder body installed in the circular mounting hole.

[0012] In one possible design, the connecting assembly includes a fixing block fixedly disposed on the inner wall of the circular mounting hole, and an annular groove, a rectangular groove, and a slot correspondingly formed on the outer wall of the outer cylinder; the annular groove communicates with the rectangular groove and the slot, and the fixing block can selectively engage with the rectangular groove or cooperate with the annular groove.

[0013] In one possible design, the support assembly includes an annular baffle that is fastened to the bottom of the support frame by fasteners, and a guide rod is fixedly provided on the inner wall of the annular baffle; a long groove is correspondingly opened at the bottom of the outer cylinder, and when the guide rod cooperates with the long groove, it forms a support for the outer cylinder.

[0014] In one possible design, a circular groove is provided at the bottom of the outer cylinder, a screw thread passes through the top of the circular groove, the bottom end of the screw is rotatably connected to the bottom of the packing cylinder, and an adjusting block is fixedly installed at the bottom end of the screw.

[0015] In one possible design, the top of the packing cylinder is connected to a threaded end cap via a threaded connection, the peripheral wall of the packing cylinder has multiple rectangular ventilation holes, and the bottom has multiple round through holes.

[0016] In one possible design, the outer wall of the outer cylinder is provided with an arc-shaped vent hole, which is connected to the internal cavity of the outer cylinder, and an arc-shaped filter plate is fixedly installed inside the arc-shaped vent hole.

[0017] A denitrification catalyst application device includes the aforementioned catalyst protection assembly and a denitrification tower; the support frame is fixedly installed inside the denitrification tower, and the top of the denitrification tower has a flue gas inlet, and one side of its bottom has a flue gas outlet.

[0018] In this application, during use, flue gas is sent into the device through the flue gas inlet, and then into the support frame through multiple air inlets. After passing through multiple rectangular ventilation holes, it reacts with the denitrification catalyst inside the packing cylinder. Through the catalytic reaction, NOx is converted into harmless nitrogen and water, thereby reducing the pollution of the exhaust gas to the environment. It is then discharged through the round hole, filtered by the arc-shaped filter plate, and finally discharged through the flue gas outlet.

[0019] When it is necessary to remove the outer cylinder and the packing cylinder, first remove the annular baffle from the bottom of the support frame by rotating the screw. At this time, the guide rod is disengaged from the long groove and no longer supports the outer cylinder. Since the top of the packing cylinder is in contact with the inner wall of the top of the circular mounting hole, the fixing block is stuck inside the rectangular groove. The outer cylinder and the packing cylinder cannot be moved up at this time and cannot be removed directly.

[0020] First, the adjusting block needs to be rotated. The adjusting block drives the screw to rotate, and the screw drives the packing cylinder to move down. The top of the packing cylinder no longer touches the top inner wall of the circular mounting hole. At this time, the outer cylinder can be moved up. After the outer cylinder is moved up, the fixing block moves from the inside of the rectangular groove to the inside of the annular groove. Rotate the outer cylinder so that the fixing block is aligned with the groove. Then the outer cylinder can be taken out directly, which is convenient to use.

[0021] Beneficial effects: After the flue gas is sent into the device through the flue gas inlet, it enters the packing cylinder through the air inlet and rectangular ventilation holes in sequence, where it reacts fully with the internal denitrification catalyst to convert NOx into harmless nitrogen and water, effectively reducing the NOx content in the exhaust gas, significantly reducing the pollution of the exhaust gas to the environment, and meeting increasingly stringent environmental protection requirements.

[0022] The outer cylinder is connected to the circular mounting hole via a connecting assembly, and a support assembly is provided to support the outer cylinder. When it is necessary to remove the outer cylinder and the packing cylinder, first rotate the screw to remove the annular baffle, releasing the guide rod's support on the outer cylinder. Then, rotate the adjusting block to drive the screw to rotate, causing the packing cylinder to move down and release its contact with the inner wall of the top of the circular mounting hole. After that, move the outer cylinder up so that the fixing block enters the annular groove from the rectangular groove. Rotate the outer cylinder to align the fixing block with the groove opening, and it can be removed. The operation is convenient, facilitating the replacement of the denitrification catalyst and equipment maintenance, reducing maintenance costs and time.

[0023] Multiple rectangular ventilation holes are opened on the outer wall of the packing cylinder, which cooperate with the air inlet holes on the support frame to ensure that the flue gas can enter the packing cylinder evenly and fully to contact the denitrification catalyst, improve the catalytic reaction efficiency, and make the denitrification effect better.

[0024] After the catalytic reaction, the gas is discharged through a circular hole and then filtered through an arc-shaped filter plate to further remove impurities and particulate matter, thereby improving the quality of the discharged gas and reducing potential impacts on downstream equipment and the environment. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a catalyst protection component and a denitrification catalyst application device proposed in this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the support frame and outer cylinder in a catalyst protection component and denitrification catalyst application equipment proposed in this utility model;

[0027] Figure 3 This is an exploded view of the support frame and outer cylinder in a catalyst protection component and denitrification catalyst application device proposed in this utility model;

[0028] Figure 4 This is an exploded view of the outer cylinder and arc-shaped filter plate in a catalyst protection component and denitrification catalyst application device proposed in this utility model;

[0029] Figure 5 This is an exploded view of the threaded end cap and packing cylinder in a catalyst protection component and denitrification catalyst application equipment proposed in this utility model.

[0030] In the diagram: 1. Denitrification tower; 2. Flue gas inlet; 3. Flue gas outlet; 4. Adjusting block; 5. Circular groove; 6. Guide rod; 7. Annular baffle; 8. Outer cylinder; 9. Air inlet; 10. Support frame; 11. Circular mounting hole; 12. Packing cylinder; 13. Groove; 14. Arc-shaped filter plate; 15. Long groove; 16. Arc-shaped exhaust hole; 17. Fixing block; 18. Annular groove; 19. Rectangular groove; 20. Rectangular ventilation hole; 21. Round through hole; 22. Screw; 23. Threaded end cap. Detailed Implementation

[0031] 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.

[0032] In one embodiment: Refer to Figure 1-5 The entire system is based on a denitrification tower 1 as its main structure. A support frame 10 is fixedly installed inside the denitrification tower 1. A circular mounting hole 11 is opened at the bottom of the support frame 10, and multiple air inlets 9 are arranged in a ring on the top of its outer wall, all of which are connected to the circular mounting hole 11. A flue gas inlet 2 is opened at the top of the denitrification tower 1, and a flue gas outlet 3 is opened on one side of the bottom for the entry and exit of flue gas.

[0033] The outer cylinder 8 is snapped into the circular mounting hole 11, sealing the circular mounting hole 11. The outer cylinder 8 and the circular mounting hole 11 are connected by a connecting assembly, which specifically consists of two fixing blocks 17 fixedly installed on the inner wall of the circular mounting hole 11, an annular groove 18 on the outer wall of the outer cylinder 8, two symmetrical slots 13 on the top, a rectangular groove 19 on the inner wall of the top of the annular groove 18, and the rectangular groove 19 and the slots 13 are all connected to the annular groove 18, and the annular groove 18, the rectangular groove 19, and the slots 13 are all used in conjunction with the fixing blocks 17.

[0034] The bottom of the support frame 10 is provided with a support assembly for supporting the outer cylinder 8. The support assembly includes an annular baffle 7, which is fixedly installed at the bottom of the support frame 10 by screws. Multiple guide rods 6 are fixedly installed on the inner wall of the annular baffle 7. Multiple long slots 15 are opened at the bottom of the outer cylinder 8. When the guide rods 6 and the long slots 15 are engaged, they provide support for the outer cylinder 8.

[0035] The outer cylinder 8 has an open top, inside which a packing cylinder 12 is slidably embedded, containing a denitrification catalyst. A threaded end cap 23 is threaded to the top of the packing cylinder 12 for easy access to add or replace the denitrification catalyst. Multiple rectangular ventilation holes 20 are formed on the outer wall of the packing cylinder 12, working in conjunction with the air inlet 9 to allow flue gas to smoothly enter the packing cylinder 12 and react with the denitrification catalyst. Multiple circular through holes 21 are formed at the bottom of the packing cylinder 12, communicating with the opening at the top of the outer cylinder 8, allowing the reacted gas to exit through these holes. Two symmetrical arc-shaped exhaust holes 16 are formed on the outer wall of the outer cylinder 8, communicating with the opening inside the outer cylinder 8. Arc-shaped filter plates 14 are fixedly installed inside the arc-shaped exhaust holes 16 to filter the exhaust gas.

[0036] During operation, flue gas containing nitrogen oxides (NOx) is introduced into the device from the flue gas inlet 2 at the top of the denitrification tower 1, entering the space above the support frame 10. The flue gas enters the support frame 10 through multiple air inlets 9, and then enters the packing cylinder 12 through multiple rectangular ventilation holes 20 on its outer wall. There, it reacts with the denitrification catalyst inside the packing cylinder 12, converting NOx into harmless nitrogen and water, thereby reducing the pollution of the exhaust gas to the environment. The reacted gas is discharged into the outer cylinder 8 through multiple round holes 21 at the bottom of the packing cylinder 12, and then filtered by the arc-shaped filter plate 14 to remove impurities and particulate matter. Finally, it is discharged through the flue gas outlet 3, effectively improving the quality of the discharged gas and reducing potential impacts on downstream equipment and the environment.

[0037] When it is necessary to remove the outer cylinder 8 and packing cylinder 12 for maintenance or to replace the denitrification catalyst, first rotate the screw to remove the annular baffle 7 from the bottom of the support frame 10. At this time, the guide rod 6 is disengaged from the long groove 15 and no longer supports the outer cylinder 8. Since the top of the packing cylinder 12 is in contact with the inner wall of the top of the circular mounting hole 11, and the fixing block 17 is stuck inside the rectangular groove 19, the outer cylinder 8 and packing cylinder 12 cannot be moved upwards and cannot be directly removed. At this time, rotate the adjusting block 4, which drives the screw 22 to rotate. The screw 22 drives the packing cylinder 12 downwards, so that the top of the packing cylinder 12 is no longer in contact with the inner wall of the top of the circular mounting hole 11. Then, move the outer cylinder 8 upwards, and the fixing block 17 moves from inside the rectangular groove 19 to inside the annular groove 18. Then rotate the outer cylinder 8 to align the fixing block 17 with the groove opening 13. At this time, the outer cylinder 8 can be directly removed, and the packing cylinder 12 can be easily removed for operation. This design makes catalyst replacement and maintenance more convenient during equipment operation, reduces equipment downtime, and improves production efficiency. At the same time, the overall structure is reasonable, the denitrification efficiency is high, and it can effectively meet the control requirements for NOx emissions in industrial exhaust gas.

[0038] This application can be used in the field of denitrification catalysts, or in other fields applicable to this application.

[0039] In another embodiment: Reference Figure 1-5 A catalyst protection component and a denitrification catalyst application device are disclosed. The device is used in the field of denitrification catalysts. A circular groove 5 is formed at the bottom of the outer cylinder 8. A screw 22 is threaded through the inner wall of the top of the circular groove 5. The bottom of the screw 22 is rotatably connected to the bottom of the packing cylinder 12. An adjusting block 4 is fixedly installed at the bottom of the screw 22. Rotating the adjusting block 4 can drive the screw 22 to rotate, thereby causing the packing cylinder 12 to move up and down.

[0040] 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. A catalyst guard assembly characterized by, include: A support frame (10) is provided with a circular mounting hole (11). Multiple air inlets (9) are provided around the circular mounting hole (11) on the top of the outer wall of the support frame (10), and the air inlets (9) are connected to the circular mounting hole (11). The outer cylinder (8) is detachably installed in the circular mounting hole (11) and the circular mounting hole (11) is sealed. A packing cylinder (12) is slidably housed inside the outer cylinder (8), and the packing cylinder (12) is used to hold the denitrification catalyst; A connecting component is disposed between the circular mounting hole (11) and the outer cylinder (8) to enable a detachable connection between the two. A support assembly, disposed at the bottom of the support frame (10), is used to provide support for the outer cylinder (8) installed in the circular mounting hole (11).

2. The catalyst guard assembly of claim 1, wherein, The connecting assembly includes a fixing block (17) fixedly disposed on the inner wall of the circular mounting hole (11), and an annular groove (18), a rectangular groove (19) and a slot (13) correspondingly opened on the outer wall of the outer cylinder (8). The annular groove (18) is connected to the rectangular groove (19) and the slot (13), and the fixing block (17) can selectively engage with the rectangular groove (19) or cooperate with the annular groove (18).

3. The catalyst guard assembly of claim 2, wherein, The support assembly includes an annular baffle (7) installed at the bottom of the support frame (10) by fasteners, and a guide rod (6) is fixedly provided on the inner wall of the annular baffle (7); a long groove (15) is correspondingly opened at the bottom of the outer cylinder (8), and when the guide rod (6) cooperates with the long groove (15), it forms a support for the outer cylinder (8).

4. The catalyst guard assembly of claim 1, wherein, The bottom of the outer cylinder (8) is provided with a circular groove (5), and the screw (22) is threaded through the top of the circular groove (5). The bottom end of the screw (22) is rotatably connected to the bottom of the packing cylinder (12), and an adjusting block (4) is fixedly installed at the bottom end of the screw (22).

5. The catalyst guard assembly of claim 1, wherein, The top of the packing cylinder (12) is connected to a threaded end cap (23) by a thread. The peripheral wall of the packing cylinder (12) is provided with a plurality of rectangular ventilation holes (20), and the bottom is provided with a plurality of round through holes (21).

6. The catalyst guard assembly of claim 1, wherein, The outer wall of the outer cylinder (8) is provided with an arc-shaped exhaust hole (16), which is connected to the internal cavity of the outer cylinder (8), and an arc-shaped filter plate (14) is fixedly installed inside the arc-shaped exhaust hole (16).

7. A denitration catalyst use device characterized by comprising: It includes the catalyst protection assembly according to any one of claims 1 to 6, and the denitrification tower (1); The support frame (10) is fixedly installed inside the denitrification tower (1). The top of the denitrification tower (1) is provided with a flue gas inlet (2), and the bottom side is provided with a flue gas outlet (3).

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