A device for regenerating and recycling waste SCR denitration catalyst

Abstract

This invention discloses a device for regenerating and reusing waste SCR denitrification catalyst, relating to the field of SCR denitrification catalyst technology. It includes a base, a wastewater tank, a support frame, a water inlet pipe, a nozzle, a first conveyor, a second conveyor, a moving mechanism, and a clamping mechanism. By incorporating the moving and clamping mechanisms, when the movable frame moves to both sides of the first conveyor, the pusher displaces, pushing the catalyst upwards. Then, two positioning frames clamp the catalyst. The moving frame moves the catalyst towards the second conveyor, and water sprays from the nozzle. Simultaneously, the catalyst tilts, allowing water to enter the catalyst's pores and slide along the inner wall of the pores, cleaning the pores and facilitating the flushing of the SCR denitrification catalyst pores.

Description

Technical Field

[0001] This invention relates to the field of SCR denitrification catalyst technology, specifically a device for regenerating and reusing waste SCR denitrification catalyst. Background Technology

[0002] Denitrification catalysts are core materials used in SCR denitrification systems in thermal power plants. They use TiO2 as a carrier and contain active components such as V2O5, WO3, or MoO3. The main structures include three types: plate, honeycomb, and corrugated plate. They achieve nitrogen oxide emission reduction through catalytic reduction reactions. Waste catalysts (vanadium-titanium based) are classified as HW49 hazardous waste and must be subject to the transfer manifest system and given priority for recycling.

[0003] Waste SCR denitrification catalysts can be reactivated and recycled through regeneration technology, effectively reducing enterprise costs and minimizing resource waste. This process mainly targets catalysts that have become deactivated due to dust blockage, chemical poisoning, or thermal sintering. Performance is restored through physical cleaning, chemical cleaning, and replenishment of active components. Cleaning is a key step in the regeneration and reuse of waste SCR denitrification catalysts, aiming to remove blockages and toxic substances from the catalyst surface and pores, and restore its specific surface area and active sites.

[0004] During cleaning, water rinsing is required to remove adhering fly ash and particulate matter, followed by ultrasonic cleaning to remove stubborn dirt and effectively remove physical blockages. However, during rinsing, the SCR denitrification catalyst is moved laterally above the cleaning tank by a mobile device, and the spray device sprays it. The rinsing water has difficulty entering the pores of the catalyst, thus affecting the rinsing of fly ash and particulate matter in the pores. In order to facilitate the rinsing of SCR denitrification catalyst, a waste SCR denitrification catalyst regeneration and reuse device is provided. Summary of the Invention

[0005] The purpose of this invention is to provide a device for regenerating and reusing waste SCR denitrification catalyst in order to facilitate the washing of SCR denitrification catalyst.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a waste SCR denitrification catalyst regeneration and reuse device, comprising a base, a wastewater tank fixedly connected to the top of the base, and support frames symmetrically fixedly connected to both sides of the wastewater tank when the base is contracted. A water inlet pipe is fixedly connected between the two support frames, and a nozzle is installed at the bottom end of the water inlet pipe. A first conveyor and a second conveyor are respectively installed at both ends of the wastewater tank at the top of the base. The catalyst is conveyed to the wastewater tank by the first conveyor, and the flushed catalyst is conveyed to the next step by the second conveyor. The catalyst is moved from the first conveyor to the second conveyor by a moving mechanism. The moving mechanism includes a movable groove, which is opened inside the base and located below the wastewater tank. A movable frame is slidably connected to the inner wall of the movable groove, and the top end of the movable frame extends out of the base. The movable frame clamps the catalyst by a clamping mechanism.

[0007] As a further embodiment of the present invention: the moving mechanism further includes a first motor, which is installed inside the base. A movable seat is fixedly connected to the bottom end of the movable frame. A first threaded rod is connected to the output end of the first motor and passes through the movable seat. A pressing rod extending into the inner cavity of the movable groove is symmetrically slidably connected inside the base. A rotating rod is rotatably connected inside the base to the outer wall of the pressing rod. A displacement frame is slidably connected inside the base to the outer wall of the rotating rod. A pushing frame is fixedly connected to the top end of the displacement frame and extends above the base.

[0008] As a further embodiment of the present invention: the clamping mechanism includes a fixing plate, which is fixedly connected to the outer wall of the support frame and located below the water inlet pipe. Sliding rods are symmetrically slidably connected to the top of the movable frame. A positioning frame is fixedly connected to one end of the two sliding rods that are close to each other, and a toothed rod is fixedly connected to one end of the sliding rods that are far apart from each other. A second motor is installed inside the movable frame, and a second threaded rod is connected to the output end of the second motor. A C-shaped frame extending to the inner wall of the movable frame is slidably connected inside the movable frame. The second threaded rod passes through the C-shaped frame. A connecting rod is symmetrically rotatably connected to the top of the C-shaped frame. A displacement plate is rotatably connected to the top of the connecting rod, and the displacement plate is rotatably connected to the sliding rod. A connecting groove is symmetrically opened on the outer wall of the movable frame, and a connecting frame is slidably connected to the inner wall of the connecting groove. The connecting frame contacts the toothed rod.

[0009] As a further embodiment of the present invention: the outer wall of the movable seat is provided with a first threaded hole, which matches the first threaded rod.

[0010] As a further embodiment of the present invention: the outer wall of the movable frame is in contact with the inner wall of the movable groove.

[0011] As a further embodiment of the present invention: the outer walls of the extrusion rod and the displacement frame are both provided with first toothed grooves, and the outer wall of the rotating rod is provided with first gear teeth, the first gear teeth meshing with the first toothed grooves.

[0012] As a further embodiment of the present invention: the bottom end of the C-shaped frame is provided with a second threaded hole, the second threaded hole is matched with the second threaded rod, and both ends of the connecting rod are connected to the C-shaped frame and the displacement plate through a rotating shaft.

[0013] As a further embodiment of the present invention: the fixed plate has symmetrically provided inclined surfaces at both ends.

[0014] As a further embodiment of the present invention: the outer wall of the connecting frame is provided with a second tooth groove, and the outer wall of the toothed rod is provided with a second gear tooth, the second gear tooth meshing with the second tooth groove.

[0015] As a further embodiment of the present invention: the outer wall of the connecting frame is in contact with the inner wall of the connecting groove, a limiting rod is fixedly connected to the inner wall of the connecting groove, and a limiting groove is provided at the top of the connecting frame for the limiting rod to slide.

[0016] Compared with the prior art, the beneficial effects of the present invention are: By setting up a moving mechanism and a clamping mechanism, when the movable frame moves to both sides of the first conveyor, the displacement of the push frame will push the catalyst upward. Then, the two positioning frames clamp the catalyst, and the movement of the movable frame will drive the catalyst toward the second conveyor. Water is sprayed out from the nozzle, and at the same time, the catalyst tilts, allowing water to be sprayed into the pores of the catalyst and slide along the inner wall of the pores to clean the pores. This facilitates the rinsing of the SCR denitrification catalyst and the flushing of the catalyst pores. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation of the movable frame of the present invention; Figure 3 This is a cross-sectional view of the base of the present invention; Figure 4 This is a schematic diagram of the installation of the displacement frame of the present invention; Figure 5 This is a schematic diagram of the displacement frame of the present invention; Figure 6 This is a schematic diagram of the structure of the movable frame of the present invention; Figure 7This is a cross-sectional view of the movable frame of the present invention; Figure 8 This is a schematic diagram of the connecting frame of the present invention.

[0018] In the diagram: 1. Base; 2. Sewage tank; 3. Support frame; 4. Inlet pipe; 5. Nozzle; 6. First conveyor; 7. Second conveyor; 8. Moving mechanism; 801. First motor; 802. First threaded rod; 803. Movable seat; 804. Movable frame; 805. Movable groove; 806. Extrusion rod; 807. Rotating rod; 808. Displacement frame; 809. Pushing frame; 9. Clamping mechanism; 901. Fixed plate; 902. Slide rod; 903. Positioning frame; 904. Second motor; 905. Second threaded rod; 906. C-shaped frame; 907. Connecting rod; 908. Displacement plate; 909. Toothed rod; 910. Connecting frame; 911. Connecting groove; 10. Limiting rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0021] Please see Figures 1 to 8In this embodiment of the invention, a waste SCR denitrification catalyst regeneration and reuse device includes a base 1. A wastewater tank 2 is fixedly connected to the top of the base 1. Support frames 3 are symmetrically fixedly connected to both sides of the wastewater tank 2 when the base 1 is contracted. An inlet pipe 4 is fixedly connected between the two support frames 3. A nozzle 5 is installed at the bottom of the inlet pipe 4. A first conveyor 6 and a second conveyor 7 are respectively installed at both ends of the wastewater tank 2 at the top of the base 1. The catalyst is conveyed to the wastewater tank 2 by the first conveyor 6. The flushed catalyst is conveyed to the next step by the second conveyor 7. The catalyst is moved from the first conveyor 6 to the second conveyor 7 by a moving mechanism 8. The moving mechanism 8 includes a movable groove 805, which is opened inside the base 1 and located below the wastewater tank 2. The inner wall of the movable groove 805 is slidably connected. A movable frame 804 is attached, with a base 1 extending from the top of the movable frame 804. The movable frame 804 clamps the catalyst via a clamping mechanism 9. The moving mechanism 8 also includes a first motor 801, which is installed inside the base 1. A movable seat 803 is fixedly connected to the bottom of the movable frame 804. A first threaded rod 802 is connected to the output end of the first motor 801 and passes through the movable seat 803. A pressing rod 806 extending into the inner cavity of the movable groove 805 is symmetrically slidably connected inside the base 1. A rotating rod 807 is rotatably connected to the outer wall of the pressing rod 806 inside the base 1. A displacement frame 808 is slidably connected to the outer wall of the rotating rod 807 inside the base 1. A pushing frame 809 is fixedly connected to the top of the displacement frame 808 and extends above the base 1.

[0022] In this embodiment: The first motor 801 is started, and its operation drives the first threaded rod 802 to rotate. The rotation of the first threaded rod 802 causes the movable seat 803 to move, which in turn causes the movable frame 804 to move. The movable frame 804 slides within the movable groove 805. When the movable frame 804 slides to one end of the movable groove 805, it comes into contact with the pressing rod 806. The movable frame 804 pushes the pressing rod 806 to move, which in turn causes the rotating rod 807 to rotate. The rotating rod 807 then causes the displacement frame 808 to move, which in turn causes the pushing frame 809 to move upward. When the movable frame 804 moves away from one end of the movable groove 805, it separates from the pressing rod 806, and the displacement frame 808 and the pushing frame 809 move downward under the influence of gravity.

[0023] Please refer to this carefully. Figures 6 to 8The clamping mechanism 9 includes a fixed plate 901, which is fixedly connected to the outer wall of the support frame 3 and located below the water inlet pipe 4. Slide rods 902 are symmetrically slidably connected to the top of the movable frame 804. A positioning frame 903 is fixedly connected to one end of the two slide rods 902 that are close to each other, and a toothed rod 909 is fixedly connected to the other ends of the slide rods 902 that are far apart from each other. A second motor 904 is installed inside the movable frame 804, and a second threaded rod 905 is connected to the output end of the second motor 904. The internal sliding connection of 04 is a C-shaped frame 906 extending to the inner wall of the movable frame 804. The second threaded rod 905 passes through the C-shaped frame 906. The top of the C-shaped frame 906 is symmetrically rotatably connected to a connecting rod 907. The top of the connecting rod 907 is rotatably connected to a displacement plate 908. The displacement plate 908 is rotatably connected to the slide rod 902. The outer wall of the movable frame 804 is symmetrically provided with connecting grooves 911. The inner wall of the connecting groove 911 is slidably connected to a connecting frame 910. The connecting frame 910 is in contact with the toothed rod 909.

[0024] In this embodiment: the second motor 904 drives the second threaded rod 905 to rotate, the rotation of the second threaded rod 905 drives the C-shaped frame 906 to move, the displacement of the C-shaped frame 906 drives the displacement plate 908 to move through the connecting rod 907, the two displacement plates 908 move in opposite directions, the displacement of the displacement plate 908 drives the slide rod 902 to move, the displacement of the slide rod 902 drives the positioning frame 903 to move, thereby driving the two positioning frames 903 to move in opposite directions; During the movement of the movable frame 804, the connecting frame 910 moves along with the movable frame 804. During the movement, the connecting frame 910 comes into contact with the fixed plate 901. The connecting frame 910 is subjected to force and moves downward. The movement of the connecting frame 910 causes the toothed rod 909 to rotate. The rotation of the toothed rod 909 causes the slide rod 902 to rotate. The rotation of the slide rod 902 causes the positioning frame 903 to rotate. The rotation of the positioning frame 903 causes the catalyst to tilt.

[0025] Please refer to this carefully. Figures 2 to 5 The outer wall of the movable seat 803 is provided with a first threaded hole, which matches the first threaded rod 802.

[0026] In this embodiment: the first motor 801 drives the first threaded rod 802 to rotate, and the rotation of the first threaded rod 802 drives the movable seat 803 to move.

[0027] Please refer to this carefully. Figures 2 to 5 The outer wall of the movable frame 804 fits against the inner wall of the movable groove 805.

[0028] In this embodiment: the displacement of the movable seat 803 causes the movable frame 804 to move, and the movable frame 804 slides within the movable groove 805.

[0029] Please refer to this carefully. Figures 2 to 5 The outer walls of the extrusion rod 806 and the displacement frame 808 are both provided with first tooth grooves, and the outer wall of the rotating rod 807 is provided with first wheel teeth, which mesh with the first tooth grooves.

[0030] In this embodiment: when the movable frame 804 slides to one end of the movable groove 805, the movable frame 804 contacts the extrusion rod 806, the movable frame 804 pushes the extrusion rod 806 to move, the extrusion rod 806 moves and drives the rotating rod 807 to rotate, the rotating rod 807 moves and drives the displacement frame 808 to move, and the displacement frame 808 moves and drives the push frame 809 to move.

[0031] Please refer to this carefully. Figures 6 to 8 The bottom end of the C-shaped frame 906 is provided with a second threaded hole, which matches the second threaded rod 905. Both ends of the connecting rod 907 are connected to the C-shaped frame 906 and the displacement plate 908 through a rotating shaft.

[0032] In this embodiment: the second motor 904 drives the second threaded rod 905 to rotate, the rotation of the second threaded rod 905 drives the C-shaped frame 906 to move, the displacement of the C-shaped frame 906 drives the displacement plate 908 to move through the connecting rod 907, the two displacement plates 908 move in opposite directions, the displacement of the displacement plate 908 drives the slide rod 902 to move, the displacement of the slide rod 902 drives the positioning frame 903 to move, thereby driving the two positioning frames 903 to move in opposite directions.

[0033] Please refer to this carefully. Figures 6 to 8 The fixed plate 901 has symmetrical bevels at both ends.

[0034] In this embodiment: during the movement of the movable frame 804, the connecting frame 910 moves together with the movable frame 804. During the displacement, the connecting frame 910 comes into contact with the fixed plate 901, and the connecting frame 910 is displaced downward under force.

[0035] Please refer to this carefully. Figures 6 to 8 The outer wall of the connecting frame 910 is provided with a second tooth groove, and the outer wall of the toothed rod 909 is provided with a second gear tooth, which meshes with the second tooth groove.

[0036] In this embodiment: the connecting frame 910 is displaced downwards under force, the displacement of the connecting frame 910 causes the rack 909 to rotate, the rotation of the rack 909 causes the slide bar 902 to rotate, and the rotation of the slide bar 902 causes the positioning frame 903 to rotate.

[0037] Please refer to this carefully. Figures 6 to 8The outer wall of the connecting frame 910 fits against the inner wall of the connecting groove 911. The inner wall of the connecting groove 911 is fixedly connected to the limiting rod 10. The top of the connecting frame 910 is provided with a limiting groove for the limiting rod 10 to slide.

[0038] In this embodiment: the connecting frame 910 is displaced downward under force and slides in the connecting groove 911. At this time, the limiting rod 10 slides in the limiting hole to limit the movement of the connecting frame 910.

[0039] Working principle: Unwashed catalyst is moved to one end of wastewater tank 2 via the first conveyor 6. When the movable frame 804 moves to both sides of the first conveyor 6, it pushes the extrusion rod 806 to move, thereby causing the pusher frame 809 to move upward. The displacement of the pusher frame 809 pushes the catalyst upward. Then, the second motor 904 is started, and the two positioning frames 903 move closer to each other to clamp the catalyst. The movement of the movable frame 804 moves the catalyst toward the second conveyor 7. Water is sprayed from the nozzle 5, and the catalyst tilts simultaneously, allowing water to be sprayed into the catalyst. Inside the duct, the catalyst slides along the inner wall of the duct to clean it. When the movable frame 804 moves to both sides of the second conveyor 7, the push frame 809 below the second conveyor 7 moves upward to support the catalyst. The positioning frames 903 move away from each other to release the catalyst. When the movable frame 804 moves towards the first conveyor 6 again, the push frame 809 moves downward to move the flushed catalyst onto the second conveyor 7. The second conveyor 7 transports the catalyst to the next step, which facilitates the flushing of the SCR denitrification catalyst and the flushing operation inside the catalyst duct.

[0040] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for regenerating and reusing waste SCR denitrification catalyst, characterized in that, The system includes a base (1), with a sewage tank (2) fixedly connected to the top of the base (1). Support frames (3) are symmetrically fixedly connected to both sides of the sewage tank (2) when the base (1) is contracted. An inlet pipe (4) is fixedly connected between the two support frames (3). A nozzle (5) is installed at the bottom of the inlet pipe (4). A first conveyor (6) and a second conveyor (7) are respectively installed at both ends of the sewage tank (2) at the top of the base (1). The catalyst is conveyed close to the sewage tank (2) via the first conveyor (6). The flushed catalyst is then transported through... The catalyst is conveyed to the next step via the second conveyor (7). The catalyst is moved from the first conveyor (6) to the second conveyor (7) via the moving mechanism (8). The moving mechanism (8) includes a movable groove (805). The movable groove (805) is opened inside the base (1) and located below the sewage tank (2). The inner wall of the movable groove (805) is slidably connected to a movable frame (804). The top of the movable frame (804) extends out of the base (1). The movable frame (804) clamps the catalyst via a clamping mechanism (9).

2. The waste SCR denitrification catalyst regeneration and reuse device according to claim 1, characterized in that, The moving mechanism (8) further includes a first motor (801), which is installed inside the base (1). The bottom end of the movable frame (804) is fixedly connected to a movable seat (803). The output end of the first motor (801) is connected to a first threaded rod (802), which passes through the movable seat (803). The interior of the base (1) is symmetrically slidably connected to a pressing rod (806) extending into the inner cavity of the movable groove (805). The interior of the base (1) is rotatably connected to a rotating rod (807) located on the outer wall of the pressing rod (806). The interior of the base (1) is slidably connected to a displacement frame (808) located on the outer wall of the rotating rod (807). The top end of the displacement frame (808) is fixedly connected to a push frame (809), which extends above the base (1).

3. The waste SCR denitrification catalyst regeneration and reuse device according to claim 2, characterized in that, The clamping mechanism (9) includes a fixed plate (901), which is fixedly connected to the outer wall of the support frame (3) and located below the water inlet pipe (4). Slide rods (902) are symmetrically slidably connected to the top of the movable frame (804). A positioning frame (903) is fixedly connected to one end of the two slide rods (902) that are close to each other, and a toothed rod (909) is fixedly connected to the other end of the slide rods (902) that are far apart from each other. A second motor (904) is installed inside the movable frame (804), and a second threaded rod (905) is connected to the output end of the second motor (904). The internal sliding connection is a C-shaped frame (906) extending to the inner wall of the movable frame (804). The second threaded rod (905) passes through the C-shaped frame (906). The top of the C-shaped frame (906) is symmetrically rotatably connected to a connecting rod (907). The top of the connecting rod (907) is rotatably connected to a displacement plate (908). The displacement plate (908) is rotatably connected to the slide rod (902). The outer wall of the movable frame (804) is symmetrically provided with connecting grooves (911). The inner wall of the connecting groove (911) is slidably connected to a connecting frame (910). The connecting frame (910) is in contact with the toothed rod (909).

4. The waste SCR denitrification catalyst regeneration and reuse device according to claim 2, characterized in that, The outer wall of the movable seat (803) is provided with a first threaded hole, which matches the first threaded rod (802).

5. The waste SCR denitrification catalyst regeneration and reuse device according to claim 2, characterized in that, The outer wall of the movable frame (804) is in contact with the inner wall of the movable groove (805).

6. The waste SCR denitrification catalyst regeneration and reuse device according to claim 2, characterized in that, The outer walls of the extrusion rod (806) and the displacement frame (808) are both provided with first tooth grooves, and the outer wall of the rotating rod (807) is provided with first gear teeth, which mesh with the first tooth grooves.

7. The waste SCR denitrification catalyst regeneration and reuse device according to claim 3, characterized in that, The bottom end of the C-shaped frame (906) is provided with a second threaded hole, which matches the second threaded rod (905). Both ends of the connecting rod (907) are connected to the C-shaped frame (906) and the displacement plate (908) through a rotating shaft.

8. The waste SCR denitrification catalyst regeneration and reuse device according to claim 3, characterized in that, The fixed plate (901) has symmetrical inclined surfaces at both ends.

9. A waste SCR denitrification catalyst regeneration and reuse device according to claim 3, characterized in that, The outer wall of the connecting frame (910) is provided with a second tooth groove, and the outer wall of the toothed rod (909) is provided with a second gear tooth, which meshes with the second tooth groove.

10. A waste SCR denitrification catalyst regeneration and reuse device according to claim 3, characterized in that, The outer wall of the connecting frame (910) is in contact with the inner wall of the connecting groove (911), and the inner wall of the connecting groove (911) is fixedly connected to the limiting rod (10). The top of the connecting frame (910) is provided with a limiting groove for the limiting rod (10) to slide.

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