Parallel flue type denitration reaction device

Abstract

The utility model discloses a parallel flue type denitration reaction device, which belongs to the technical field of flue gas denitration, and comprises a bracket, three flue pipes are arranged on the top surface of the bracket, each flue pipe comprises four short pipes, the four short pipes are arranged along a straight line, and the four short pipes are arranged in parallel. The four short pipes are fixedly connected through screws, catalyst plates are fixed to the inner sides of three of the short pipes, an ammonia spraying facility is fixed to the top of the inner side of the other short pipe, a chimney is fixed to one end of each of the three flue pipes, mounting plates are arranged below the four short pipes, and the mounting plates are fixed to the top of the inner side of the other short pipe. And the outer side of the mounting plate is fixedly connected with the inner side of a support, and first inserting rods and four second inserting rods are fixed to the bottom faces of the four short pipes correspondingly. After the device is arranged in the horizontal direction, a reactor steel support does not need to be heightened, the length of the outlet flue does not need to be shortened, steel consumption is greatly reduced in the aspect of material use, and meanwhile a catalyst is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas denitration, and more specifically, relates to a parallel flue type denitration reaction device. Background Art

[0002] The primary function of an SCR reactor is to convert NOx into harmless nitrogen and water, thereby reducing atmospheric pollutant emissions. This technology is particularly suitable for denitrification in large and medium-sized coal-fired boilers, smelting, and chemical industries, helping to reduce the negative environmental impact of nitrogen oxides generated during industrial production. In traditional SCR reactor denitrification systems, flue gas enters the reactor from the bottom and reacts upward through several layers of catalyst before exiting clean. The reactor is supported by a steel structure, typically around 20 meters high, resulting in high steel consumption. Furthermore, screw installation and disassembly are inconvenient. Therefore, a parallel flue-type denitrification reactor was proposed. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides a parallel flue type denitrification reaction device. After changing to a horizontal arrangement, there is no need to raise the reactor steel support, shortening the length of the outlet flue, and greatly saving steel consumption in terms of material usage, so as to solve the problem of the traditional SCR reactor denitrification device proposed in the above background technology, in which the flue gas enters from the lower part of the reactor, passes through several layers of catalyst from bottom to top, and the clean gas is discharged. The reactor is supported on a steel structure, generally at a height of about 20 meters, with high steel consumption. At the same time, it is inconvenient to install and disassemble with screws.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a parallel flue type denitrification reaction device, including a bracket, three flue pipes are provided on the top surface of the bracket, the flue pipes include four short tubes, the four short tubes are arranged in a straight line, the four short tubes are fixedly connected by screws, the inner sides of three of the short tubes are fixed with catalyst plates, the inner top of another short tube is fixed with an ammonia injection facility, one end of the three flue tubes is fixed with a chimney, the bottom of the four short tubes is provided with a mounting plate, the outer side of the mounting plate is fixedly connected to the inner side of the bracket, the bottom surfaces of the four short tubes are fixed with a first plug rod and four second plug rods, and a slot is provided at the lower outer side of the first plug rod.

[0005] As a preferred technical solution of the present invention, four first through slots are formed on the top surface of the mounting plate, and first sleeves are fixed on the inner sides of the four first through slots.

[0006] As a preferred technical solution of the present invention, the positions of the four first sleeves correspond to the four second insertion rods, and the lower ends of the four second insertion rods are plugged into and fitted with the inner sides of the four first sleeves.

[0007] As a preferred technical solution of the present utility model, three worm gears are rotatably connected to the outside of the bracket, handles are fixed to the lower ends of the three worm gears, and worm wheels are meshed and connected to the outside of the three worm gears.

[0008] As a preferred technical solution of the present utility model, one side of the worm wheel is rotatably connected to the bracket, and a transmission shaft is coaxially fixed to one end of the rotating shaft of the worm wheel.

[0009] As a preferred technical solution of the present utility model, four first connecting rods are fixed to the outside of the transmission shaft, and second connecting rods are rotatably connected to one ends of the four first connecting rods.

[0010] As a preferred technical solution of the present utility model, a movable rod is rotatably connected to the upper end of the second connecting rod, a second sleeve is slidably connected to the outside of the movable rod, the position of the second sleeve corresponds to the position of the first insertion rod, one end of the second sleeve is fixedly connected to the middle of the outside of the mounting plate, two grooves are formed in the inner side of the second sleeve, a stop block is arranged at the lower part of the inner side of the groove, two elastic buckles are fixed to the upper end of the movable rod, the elastic buckles are located inside the groove, and the upper ends of the elastic buckles are in clamping fit with the inner side of the clamping groove.

[0011] The present utility model provides a parallel flue type denitrification reaction device, which has the following beneficial effects:

[0012] 1. For this parallel flue type denitrification reaction device, flue gas enters the flue pipe and passes through three catalyst plates respectively, namely the primary denitrification catalyst, the secondary denitrification catalyst, and the tertiary denitrification catalyst, to achieve the denitrification effect. If the flue gas volume is large, a parallel arrangement of multiple flues can be adopted. After changing to a horizontal arrangement, there is no need to increase the height of the reactor steel support, the length of the outlet flue is shortened, and in terms of material use, the steel consumption is greatly saved. At the same time, the catalyst replacement is also relatively convenient.

[0013] 2. This parallel flue type denitrification reaction device can quickly complete the installation operation, save manpower, and facilitate subsequent disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a parallel flue type denitrification reaction device of the present utility model.

[0015] Figure 2 It is a schematic diagram of the split structure of a parallel flue type denitrification reaction device of the present utility model.

[0016] Figure 3 It is a schematic diagram of the connection relationship of the mounting plate of a parallel flue type denitrification reaction device of the present utility model.

[0017] Figure 4For a parallel flue type denitration reaction device of the present utility model Figure 3 The enlarged schematic view of part A in

[0018] In the figure: 1, support; 2, flue pipe; 201, short pipe; 3, catalyst plate; 4, ammonia injection facility; 5, chimney; 6, mounting plate; 7, first insertion rod; 8, second insertion rod; 9, card slot; 10, first sleeve; 11, worm; 12, handle; 13, worm gear; 14, transmission shaft; 15, first connecting rod; 16, second connecting rod; 17, movable rod; 18, second sleeve; 19, groove; 20, stop block; 21, elastic buckle. Specific embodiments

[0019] The following further describes the embodiments of the present utility model in detail in conjunction with the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0020] In the description of the present utility model, unless otherwise specified, "multiple" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Please refer to Figures 1 to 4, the utility model provides a technical solution: a parallel flue type denitration reaction device, including a bracket 1. On the top surface of the bracket 1, there are three flue pipes 2. The flue pipe 2 includes four short pipes 201. The four short pipes 201 are arranged in a straight line and are fixedly connected by screws. Inside three of the short pipes 201, catalyst plates 3 are fixedly installed respectively. On the inner top of the other short pipe 201, an ammonia injection facility 4 is fixedly installed. At one end of each of the three flue pipes 2, a chimney 5 is fixedly installed. Below each of the four short pipes 201, there is an installation plate 6. The outer side of the installation plate 6 is fixedly connected to the inner side of the bracket 1. On the bottom surface of each of the four short pipes 201, a first insertion rod 7 and four second insertion rods 8 are fixedly installed. On the lower part of the outer side of the first insertion rod 7, a card slot 9 is opened;

[0023] The flue gas enters the flue pipe 2 and passes through the three catalyst plates 3 respectively, namely the primary denitration catalyst, the secondary denitration catalyst, and the tertiary denitration catalyst, to achieve the denitration effect. If the flue gas volume is large, a parallel arrangement of multiple flue pipes can be adopted. After changing to a horizontal arrangement, there is no need to increase the height of the reactor steel bracket, and the length of the outlet flue is shortened. In terms of material use, the steel consumption is greatly saved, and at the same time, the catalyst replacement is also relatively convenient.

[0024] Furthermore, on the top surface of the installation plate 6, four first through grooves are opened. Inside each of the four first through grooves, a first sleeve 10 is fixedly installed. The positions of the four first sleeves 10 correspond to the four second insertion rods 8. The lower ends of the four second insertion rods 8 are inserted and matched with the inner sides of the four first sleeves 10. On the outer side of the bracket 1, three worm gears 11 are rotatably connected. At the lower end of each of the three worm gears 11, a handle 12 is fixedly installed. On the outer side of each of the three worm gears 11, a worm wheel 13 is meshed and connected. One side of the worm wheel 13 is rotatably connected to the bracket 1. At one end of the rotating shaft of the worm wheel 13, a transmission shaft 14 is coaxially fixedly installed. On the outer side of the transmission shaft 14, four first connecting rods 15 are fixedly installed. At one end of each of the four first connecting rods 15, a second connecting rod 16 is rotatably connected. At the upper end of the second connecting rod 16, a movable rod 17 is rotatably connected. On the outer side of the movable rod 17, a second sleeve 18 is slidably connected. The position of the second sleeve 18 corresponds to the position of the first insertion rod 7. One end of the second sleeve 18 is fixedly connected to the middle part of the outer side of the installation plate 6. Inside the second sleeve 18, two grooves 19 are opened. At the lower part of the inner side of the groove 19, a stop block 20 is provided. At the upper end of the movable rod 17, two elastic buckles 21 are fixedly installed. The elastic buckles 21 are located inside the groove 19, and the upper ends of the elastic buckles 21 are clamped and matched with the inner side of the card slot 9;

[0025] When installing the flue duct 2, insert the first insertion rod 7 and the four second insertion rods 8 on the short pipe 201 into the second sleeve 18 and the four first sleeves 10 on the mounting plate 6 respectively. Then, rotate the handle 12 to drive the worm 11 to rotate. The worm 11 drives the worm wheel 13 and the transmission shaft 14 to rotate. The transmission shaft 14 drives the four first connecting rods 15. The first connecting rod 15 drives the movable rod 17 to slide downward along the inner side of the second sleeve 18 through the second connecting rod 16. During this process, the elastic buckle 21 on the movable rod 17 slides along the inner side of the groove 19 and contacts the stop block 20. The elastic buckle 21 is squeezed and shrinks towards the middle, and is clamped and fixed with the clamping groove 9 on the first insertion rod 7. As the movable rod 17 continues to move downward, the short pipe 201 is pulled through the first insertion rod 7 to be closely fitted with the mounting plate 6, so as to quickly complete the installation operation, saving manpower and facilitating subsequent disassembly and maintenance.

[0026] Specific usage method and function of this embodiment: In the utility model, flue gas enters the flue duct 2 and passes through three catalyst plates 3 respectively, namely the primary denitration catalyst, the secondary denitration catalyst, and the tertiary denitration catalyst, to achieve the denitration effect. If the flue gas volume is large, a parallel arrangement of multiple flue ducts can be adopted. After changing to a horizontal arrangement, there is no need to raise the reactor steel support, shortening the length of the outlet flue. In terms of material use, the steel consumption is greatly saved, and at the same time, the catalyst replacement is relatively convenient;

[0027] When installing the flue duct 2, insert the first insertion rod 7 and the four second insertion rods 8 on the short pipe 201 into the second sleeve 18 and the four first sleeves 10 on the mounting plate 6 respectively. Then, rotate the handle 12 to drive the worm 11 to rotate. The worm 11 drives the worm wheel 13 and the transmission shaft 14 to rotate. The transmission shaft 14 drives the four first connecting rods 15. The first connecting rod 15 drives the movable rod 17 to slide downward along the inner side of the second sleeve 18 through the second connecting rod 16. During this process, the elastic buckle 21 on the movable rod 17 slides along the inner side of the groove 19 and contacts the stop block 20. The elastic buckle 21 is squeezed and shrinks towards the middle, and is clamped and fixed with the clamping groove 9 on the first insertion rod 7. As the movable rod 17 continues to move downward, the short pipe 201 is pulled through the first insertion rod 7 to be closely fitted with the mounting plate 6, so as to quickly complete the installation operation.

[0028] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent replacements or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A parallel flue type denitrification reaction device, comprising a bracket (1), characterized in that: The top surface of the bracket (1) is provided with three flue pipes (2), and the flue pipes (2) include four short pipes (201). The four short pipes (201) are arranged in a straight line and are fixedly connected by screws. The inner sides of the three short pipes (201) are fixed with catalyst plates (3), and the inner top of another short pipe (201) is fixed with an ammonia injection facility (4). One end of the three flue pipes (2) is fixed with a chimney (5). A mounting plate (6) is provided below the four short pipes (201), and the outer side of the mounting plate (6) is fixedly connected to the inner side of the bracket (1). The bottom surfaces of the four short pipes (201) are fixed with a first plug rod (7) and four second plug rods (8), and a slot (9) is provided at the lower part of the outer side of the first plug rod (7).

2. The parallel flue-type denitration reaction device according to claim 1, characterized in that: Four first through slots are formed on the top surface of the mounting plate (6), and first sleeves (10) are fixed on the inner sides of the four first through slots.

3. The parallel flue type denitration reaction device according to claim 2, characterized in that: The positions of the four first sleeves (10) correspond to the four second insertion rods (8), and the lower ends of the four second insertion rods (8) are plugged into and fitted with the inner sides of the four first sleeves (10).

4. The parallel flue-type denitration reaction device according to claim 1, characterized in that: The outer side of the bracket (1) is rotatably connected to three worms (11), the lower ends of the three worms (11) are all fixed with handles (12), and the outer sides of the three worms (11) are all meshedly connected to worm wheels (13).

5. The parallel flue-type denitration reaction device according to claim 4, characterized in that: One side of the worm wheel (13) is connected to the support (1) for rotation, and a transmission shaft (14) is coaxially fixed to one end of the rotating shaft of the worm wheel (13).

6. The parallel flue-type denitration reaction device according to claim 5, characterized in that: Four first connecting rods (15) are fixed on the outer side of the transmission shaft (14), and one end of each of the four first connecting rods (15) is rotatably connected to a second connecting rod (16).

7. The parallel flue-type denitration reaction device according to claim 6, characterized in that: The upper end of the second connecting rod (16) is rotatably connected to a movable rod (17), and the outer side of the movable rod (17) is slidably connected to a second sleeve (18), the position of the second sleeve (18) corresponds to the position of the first plug rod (7), one end of the second sleeve (18) is fixedly connected to the middle part of the outer side of the mounting plate (6), the inner side of the second sleeve (18) is provided with two grooves (19), the inner lower part of the groove (19) is provided with a stopper (20), the upper end of the movable rod (17) is fixed with two elastic clips (21), the elastic clips (21) are located inside the groove (19), and the upper end of the elastic clip (21) is engaged with the inner side of the card slot (9).

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