Flue gas desulfurization and denitrification powder fixed bed test device for waste incineration power plant

Abstract

The utility model discloses a fixed bed test device for flue gas desulfurization and denitrification powder of a waste incineration power plant, which comprises a reactor main body, and a gas inlet pipe and a gas outlet pipe which are connected to the top end and the bottom end of the reactor main body, and a uniform distribution plate and a catalyst main body are sequentially connected in the reactor main body from top to bottom; the side surface of the reactor main body is provided with an inlet / outlet through which the catalyst main body enters and exits, the inlet / outlet is connected with a positioning mechanism for positioning the catalyst main body, the positioning mechanism comprises two pressing blocks, two toothed plates, a gear, a rotating handle and a positioning bolt, and the end parts of the toothed plates are connected with the pressing blocks; the gear is used for driving the two toothed plates to be close to or far away from each other, the rotary handle is used for driving the gear to rotate, and an elastic mechanism is connected to the back surface of the reactor main body and is connected with the catalyst main body. The inlet / outlet facilitates the installation and disassembly of the catalyst main body, can improve the stability of the catalyst main body, and is safe and reliable to use.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed bed testing, in particular to a fixed bed testing device for flue gas desulfurization and denitrification powders in waste incineration power plants. Background Art

[0002] Waste incineration is the process of reducing the volume of waste through high-temperature oxidation, through appropriate reactions such as thermal decomposition, combustion, and melting, resulting in a residue or molten solid. Waste incineration facilities must be equipped with flue gas treatment equipment to prevent the re-discharge of heavy metals and organic pollutants into the environment. Fixed-bed test rigs can be used for flue gas treatment, where the catalyst remains stationary while the reactants react with the catalyst. These rigs offer advantages such as simplicity, compactness, and stable operation, making them widely used in catalysis, deoxidation, and hydrogenation.

[0003] After a fixed-bed test apparatus has been used for a long time, the activity of the catalyst decreases, resulting in poor reaction results and requiring replacement. The existing replacement method usually involves opening the end cover on the top of the reactor and then performing the replacement operation. The end cover is usually fixed with multiple bolts, and tools are needed to tighten and loosen the bolts, which is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0004] The purpose of the utility model is to provide a fixed-bed test device for flue gas desulfurization and denitrification powders in waste incineration power plants. The device has inlets and outlets that facilitate the installation and disassembly of the catalyst body, improve the stability of the catalyst body, and has the advantages of being safe and reliable to use, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixed-bed test device for flue gas desulfurization and denitrification powders in waste incineration power plants, comprising a reactor body and an air inlet pipe and an exhaust pipe connected to the top and bottom ends of the reactor body, wherein a uniform distribution plate and a catalyst body are sequentially connected in sequence from top to bottom in the reactor body, and an inlet and an outlet for the catalyst body to enter and exit are provided on the side of the reactor body, and the inlet and outlet are connected to a positioning mechanism for positioning the catalyst body, and the positioning mechanism comprises two pressing blocks, two tooth plates, a gear, a rotary handle, and a positioning bolt, the end of the tooth plate is connected to the pressing block, the gear is used to drive the two tooth plates to approach or move away from each other, the rotary handle is used to drive the gear to rotate, and the positioning bolt is used to lock the rotary handle in position, and an elastic mechanism is connected to the back of the reactor body, and the elastic mechanism is connected to the catalyst body.

[0006] Preferably, the positioning mechanism also includes two sliding blocks, two sliding grooves, and an inner cavity. The sliding block is fixedly connected to the pressing block, and the sliding block is slidably connected to the sliding groove. The sliding groove is arranged at the front end of the reactor body, and the inner cavity is arranged in the reactor body, and the inner cavity is connected to the sliding groove.

[0007] Preferably, the tooth plate and the gear are located in the inner cavity, and the tooth plate is slidingly connected to the inner cavity, and the gear is rotationally connected to the inner cavity.

[0008] Preferably, the gear is meshed with the two tooth plates, and the gear is connected to the rotary handle via a shaft.

[0009] Preferably, the positioning bolt is threadedly connected to the rotary handle, a connecting groove is provided at the front end of the reactor body, and the end of the positioning bolt matches the connecting groove.

[0010] Preferably, the catalyst body includes a sealing cover, a catalyst layer, and a fixing frame. The catalyst layer is connected inside the fixing frame, and the sealing cover is connected to an end of the fixing frame, and the sealing cover matches the inlet and outlet.

[0011] Preferably, a limiting groove is provided in the reactor body, and the limiting groove matches the fixing frame.

[0012] Preferably, the elastic mechanism includes a fixed cylinder, a spring, a push rod, a guide block, and a push plate. The fixed cylinder is fixed to the back of the reactor body, the guide block is slidably connected to the fixed cylinder, the two ends of the push rod are connected to the push plate and the guide block, the spring is located in the fixed cylinder, and the two ends of the spring are connected to the fixed cylinder and the guide block.

[0013] Preferably, the inlet and outlet are provided with a sealing surface, and the sealing surface is an inclined structure.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a positioning mechanism and an inlet and outlet, which facilitate the installation and disassembly of the catalyst body. When a new catalyst body is loaded into the reactor body, the driving handle drives the gear to rotate, and the gear drives the two tooth plates to approach each other. The tooth plates drive the corresponding sliding blocks and pressing blocks to move synchronously, so that the pressing blocks are pressed against the sealing cover, thereby achieving the installation and fixation of the catalyst body, improving the stability of the catalyst body, and being safe and reliable to use. Finally, the positioning bolt is used to lock the handle to prevent the pressing block from moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the internal structure of the inner cavity of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the reactor body of the present utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the inlet and outlet of the utility model and the reactor body;

[0020] Figure 6 This is a schematic diagram of the elastic mechanism structure of the present utility model.

[0021] In the figure: 1. Reactor body; 2. Air inlet pipe; 3. Sealing cover; 4. Inlet and outlet; 5. Pressing block; 6. Rotating handle; 7. Positioning bolt; 8. Slide groove; 9. Inner cavity; 10. Tooth plate; 11. Gear; 12. Uniform distribution plate; 13. Catalyst layer; 14. Fixing cylinder; 15. Limiting groove; 16. Fixing frame; 17. Exhaust pipe; 18. Spring; 19. Push rod; 20. Guide block; 21. Sealing surface; 22. Sliding block; 23. Push plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 6 The present invention provides a fixed-bed test apparatus for flue gas desulfurization and denitrification powders in waste incineration power plants. The apparatus comprises a reactor body 1, an air inlet pipe 2, and an exhaust pipe 17 connected to the top and bottom ends of the reactor body 1. A uniform distribution plate 12 and a catalyst body are sequentially connected within the reactor body 1 from top to bottom. Flue gas enters the reactor body 1 from the air inlet pipe 2 and moves from top to bottom. The uniform distribution plate 12 evenly disperses the flue gas, ensuring more complete contact with the catalyst body and improving the reaction effect. An inlet and outlet 4 for the catalyst body is provided on the side of the reactor body 1. The inlet and outlet 4 facilitates installation and removal of the catalyst body. The inlet and outlet 4 are connected to a positioning mechanism for positioning the catalyst body. The positioning mechanism includes two pressing blocks 5, two tooth plates 10, a gear 11, a handle 6, and a positioning bolt 7. The end of the tooth plate 10 is connected to the pressing block 5. The gear 11 is used to drive the two tooth plates 10 to move closer to or away from each other. The handle 6 is used to drive the gear 11 to rotate. The positioning bolt 7 is used to lock the handle 6 into position. An elastic mechanism is connected to the back of the reactor body 1, and the elastic mechanism is connected to the catalyst body.

[0024] There can be multiple inlets and outlets 4, which are selected according to the number of catalyst bodies. A single catalyst body corresponds to a single inlet and outlet 4, and the corresponding positioning mechanism and elastic mechanism are also single.

[0025] When installing the catalyst body, the driving handle 6 drives the gear 11 to rotate, and the gear 11 drives the two tooth plates 10 to approach each other. The tooth plates 10 drive the corresponding sliding blocks 22 and the pressing blocks 5 to move synchronously, so that the pressing blocks 5 are pressed tightly against the sealing cover 3, thereby achieving the installation and fixation of the catalyst body, improving the stability of the catalyst body, and making it safe and reliable to use. Finally, the positioning bolt 7 is used to lock the rotating handle 6 to prevent the pressing block 5 from moving.

[0026] The positioning mechanism also includes two sliding blocks 22, two chute grooves 8, and an inner cavity 9. The sliding blocks 22 are fixedly connected to the pressing block 5 and slidably connected to the chute grooves 8. The chute grooves 8 are located at the front end of the reactor body 1, and the inner cavity 9 is located within the reactor body 1 and is connected to the chute grooves 8. The sliding blocks 22 can slide within the chute grooves 8, improving the stability of the reciprocating movement of the pressing block 5 and the tooth plate 10, allowing the pressing block 5 to accurately press against the sealing cover 3.

[0027] The tooth plate 10 and the gear 11 are located in the inner cavity 9 , and the tooth plate 10 is slidingly connected to the inner cavity 9 , and the gear 11 is rotationally connected to the inner cavity 9 , thereby improving the rotation stability of the gear 11 .

[0028] The gear 11 is meshed with the two toothed plates 10 and is connected to the handle 6 via a shaft.

[0029] A positioning bolt 7 is threadedly connected to the handle 6. A connecting groove is provided at the front end of the reactor body 1, and the end of the positioning bolt 7 mates with the connecting groove. After the catalyst body is installed, the positioning bolt 7 is rotated to move its end forward and connect with the connecting groove, thereby locking the handle 6 in place and preventing the pressing block 5 from moving and affecting the stability of the catalyst body.

[0030] The catalyst body includes a sealing cover 3, a catalyst layer 13, and a fixed frame 16. The catalyst layer 13 is connected to the fixed frame 16, and the sealing cover 3 is connected to the end of the fixed frame 16. The sealing cover 3 is matched with the inlet and outlet 4. A limiting groove 15 is provided in the reactor body 1, and the limiting groove 15 matches the fixed frame 16. When installing the catalyst body, the fixed frame 16 is aligned with the inlet and outlet 4, and a thrust is applied to the sealing cover 3 so that the fixed frame 16 is inserted into the limiting groove 15 to limit the fixed frame 16. The sealing cover 3 is then connected to the inlet and outlet 4, and the sealing cover 3 is locked and positioned using a positioning mechanism to improve the stability of the fixed frame 16 and the catalyst layer 13.

[0031] The elastic mechanism includes a fixed cylinder 14, a spring 18, a push rod 19, a guide block 20, and a push plate 23. The fixed cylinder 14 is fixed to the back of the reactor body 1, and the guide block 20 is slidably connected to the fixed cylinder 14. The two ends of the push rod 19 are connected to the push plate 23 and the guide block 20. The spring 18 is located in the fixed cylinder 14, and the two ends of the spring 18 are connected to the fixed cylinder 14 and the guide block 20. During the forward movement of the catalyst body, the fixed frame 16 contacts the push plate 23 and drives the push plate 23 to move, synchronously driving the push rod 19 and the guide block 20 to move. At this time, the spring 18 is gradually stretched, causing the push plate 23 to apply a gradually increasing thrust to the catalyst body. When the catalyst body needs to be disassembled, the stretched spring 18 drives the guide block 20, push rod 19, and push plate 23 to move back. The push plate 23 pushes the catalyst body back, separating the sealing cover 3 from the inlet and outlet 4, making it convenient to pull the sealing cover 3 to extract the catalyst layer 13 and the fixed frame 16, thereby achieving the purpose of quick disassembly.

[0032] The inlet and outlet 4 are provided with a sealing surface 21, which is an inclined structure. When the catalyst body is in a positioned state, the sealing cover 3 is pressed against the inlet and outlet 4, and the provided sealing surface 21 can improve the sealing performance of the connection between the two to avoid gas leakage.

[0033] Working principle: When installing the catalyst body, align the fixing frame 16 with the inlet and outlet 4, and apply thrust to the sealing cover 3 to make the fixing frame 16 slide on the limiting groove 15. At this time, the sealing cover 3 has not yet been connected to the inlet and outlet 4. Then rotate the handle 6 to drive the gear 11 to rotate. The gear 11 drives the two tooth plates 10 to approach each other, and simultaneously drives the two sliding blocks 22 to approach each other, so that the two pressing blocks 5 move synchronously. The inclined surface at the end of the pressing block 5 slides relative to the sealing cover 3, which can drive the sealing cover 3 to move toward the inside of the reactor body 1 until the inner plane of the pressing block 5 is connected to the sealing cover 3. The sealing cover 3 is pressed and fixed, and the spring 18 is in an extended state. Then rotate the positioning bolt 7 to lock the handle 6 to improve the stability of the two pressing blocks 5 and prevent the catalyst body from loosening. When the catalyst body needs to be disassembled and replaced, the positioning bolt 7 is operated to loosen the rotary handle 6, and then the rotary handle 6 is rotated to drive the gear 11 to rotate, so that the two pressing blocks 5 move away from each other. Until the pressing blocks 5 are separated from the sealing cover 3, the sealing cover 3 is loosened, and the stretched spring 18 pushes the push plate 23 to move, and the push plate 23 pushes the fixed frame 16 back to separate the sealing cover 3 from the inlet and outlet 4, making it convenient to operate the sealing cover 3 to extract the catalyst body. The operation is simple, convenient and efficient.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed bed test device for flue gas desulfurization and denitrification powders in waste incineration power plants, comprising a reactor body (1) and an air inlet pipe (2) and an exhaust pipe (17) connected to the top and bottom ends of the reactor body (1), characterized in that: The reactor body (1) is connected with a uniform distribution plate (12) and a catalyst body in sequence from top to bottom, and an inlet and outlet (4) for the catalyst body to enter and exit is provided on the side of the reactor body (1), and the inlet and outlet (4) is connected with a positioning mechanism for positioning the catalyst body, and the positioning mechanism includes two pressing blocks (5), two tooth plates (10), a gear (11), a rotary handle (6), and a positioning bolt (7). The end of the tooth plate (10) is connected to the pressing block (5), the gear (11) is used to drive the two tooth plates (10) to move closer to or away from each other, the rotary handle (6) is used to drive the gear (11) to rotate, and the positioning bolt (7) is used to lock the rotary handle (6) in position. The back of the reactor body (1) is connected with an elastic mechanism, and the elastic mechanism is connected to the catalyst body.

2. A fixed-bed test device for flue gas desulfurization and denitrification powders for waste incineration power plants according to claim 1, characterized in that: The positioning mechanism further comprises two sliding blocks (22), two slide grooves (8), and an inner cavity (9), wherein the sliding block (22) is fixedly connected to the pressing block (5), and the sliding block (22) is slidably connected to the slide groove (8), the slide groove (8) is arranged at the front end of the reactor body (1), and the inner cavity (9) is arranged in the reactor body (1), and the inner cavity (9) is connected to the slide groove (8).

3. The fixed-bed test device for flue gas desulfurization and denitrification powders used in waste incineration power plants according to claim 2, characterized in that: The tooth plate (10) and the gear (11) are located in the inner cavity (9), and the tooth plate (10) is slidably connected to the inner cavity (9), and the gear (11) is rotatably connected to the inner cavity (9).

4. The fixed-bed test device for flue gas desulfurization and denitrification powders used in waste incineration power plants according to claim 1, characterized in that: The gear (11) is meshedly connected with the two tooth plates (10), and the gear (11) is connected to the rotary handle (6) via a shaft.

5. A fixed-bed test device for flue gas desulfurization and denitrification powders for waste incineration power plants according to claim 4, characterized in that: The positioning bolt (7) is threadedly connected to the rotary handle (6); a connection groove is provided at the front end of the reactor body (1); and the end of the positioning bolt (7) matches the connection groove.

6. The fixed-bed test device for flue gas desulfurization and denitrification powders used in waste incineration power plants according to claim 1, characterized in that: The catalyst body comprises a sealing cover (3), a catalyst layer (13), and a fixing frame (16); the catalyst layer (13) is connected to the fixing frame (16); the sealing cover (3) is connected to the end of the fixing frame (16); and the sealing cover (3) matches the inlet and outlet (4).

7. A fixed-bed test device for flue gas desulfurization and denitrification powders for waste incineration power plants according to claim 6, characterized in that: A limiting groove (15) is provided in the reactor body (1), and the limiting groove (15) matches the fixing frame (16).

8. The fixed-bed test device for flue gas desulfurization and denitrification powders used in waste incineration power plants according to claim 1, characterized in that: The elastic mechanism includes a fixed cylinder (14), a spring (18), a push rod (19), a guide block (20), and a push plate (23). The fixed cylinder (14) is fixed to the back of the reactor body (1). The guide block (20) is slidably connected to the fixed cylinder (14). Both ends of the push rod (19) are connected to the push plate (23) and the guide block (20). The spring (18) is located in the fixed cylinder (14), and both ends of the spring (18) are connected to the fixed cylinder (14) and the guide block (20).

9. The fixed-bed test device for flue gas desulfurization and denitrification powders used in waste incineration power plants according to claim 1, characterized in that: The inlet and outlet (4) are provided with a sealing surface (21), and the sealing surface (21) is an inclined structure.

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