High-temperature material recycling device

Abstract

The invention belongs to the technical field of industrial combustion, and particularly relates to a high-temperature material recycling device which comprises a fluidized bed furnace, a feeding box is arranged on the left side of the fluidized bed furnace and connected with the fluidized bed furnace through a feeding pipe, the fluidized bed furnace is provided with an air outlet pipe, the air outlet pipe is connected with a cyclone dust removal tank, and an air pipe is arranged in the middle of the cyclone dust removal tank. A discharging mechanism is arranged at the bottom of the cyclone dust removal tank; through the arrangement of the cyclone dust removal tank and the discharging mechanism, fly ash which is not completely combusted can be collected and conveyed back into the fluidized bed furnace again to be combusted, cyclic utilization of high-temperature materials is achieved, the utilization rate of resources is increased, and resource waste is reduced; the interlayer is arranged on the side wall of the fluidized bed furnace and the side wall of the cyclone dust removal tank, air in the interlayer flows through the fan and the connecting pipe, heat of the furnace wall and high-temperature flue gas is recycled, the recycled hot air can be used for preheating raw materials in the feeding box, the energy utilization efficiency is improved, and heat loss is reduced.

Description

Technical Field

[0001] This invention belongs to the field of industrial combustion technology, and specifically relates to a high-temperature material recycling device. Background Technology

[0002] In industrial combustion processes, such as fluidized bed combustion, high-temperature flue gas and incompletely burned fly ash are often generated. Traditionally, this incompletely burned fly ash is usually directly discharged or simply collected and treated, which not only wastes resources but may also cause environmental pollution. Simultaneously, during combustion, heat from the furnace walls is lost to the surrounding environment, leading to reduced energy efficiency. Furthermore, if the fuel material entering the fluidized bed furnace is not effectively treated, incomplete combustion may occur, affecting overall combustion efficiency and energy utilization. Therefore, developing a device that can effectively recycle high-temperature materials, recover heat, and improve combustion efficiency is of significant practical importance. Summary of the Invention

[0003] The purpose of this invention is to provide a high-temperature material recycling device to solve the problems mentioned in the background art.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A high-temperature material recycling device includes a fluidized bed furnace, a feeding box is provided on the left side of the fluidized bed furnace, the feeding box is connected to the fluidized bed furnace through a feeding pipe, an exhaust pipe is provided at the upper end of the fluidized bed furnace, the exhaust pipe is connected to a cyclone dust collector, an air duct is provided in the middle of the cyclone dust collector, and a discharge mechanism is provided at the bottom of the cyclone dust collector. The discharge mechanism includes a first circular shell fixed to the bottom of the cyclone dust collector. The upper end of the first circular shell is connected to the interior of the cyclone dust collector. The lower end of the first circular shell is connected to a discharge pipe, which is connected to the feed pipe. A first circular block is rotatably installed inside the first circular shell. The side wall of the first circular block is in contact with the side wall of the first circular shell. The first circular shell has a first receiving groove on both the top and bottom. The first circular block is equipped with a rotating component.

[0005] Both the fluidized bed furnace and the cyclone dust collector have interlayers on their side walls. The interlayers of the fluidized bed furnace and the cyclone dust collector are connected by a connecting pipe. A fan is installed at the top of the cyclone dust collector, and the fan is connected to the interlayer of the cyclone dust collector.

[0006] The rotating assembly includes a housing fixed to the front side of the connecting pipe, the housing being in communication with the connecting pipe, a rotating block being rotatably installed inside the housing, a plurality of evenly distributed blades being installed on the side wall of the rotating block, the blades extending into the connecting pipe, and a first rotating rod being rotatably installed at the lower end of the housing, the first rotating rod being connected to the rotating block via a sprocket drive. The first circular shell is rotatably mounted with a second transmission rod, which is connected to the first circular block. A first conical tooth is fixed on the lower side of the first rotating rod, and a second conical tooth that meshes with the first conical tooth is fixed on the second transmission rod.

[0007] A material spreading mechanism is provided between the feed pipe and the fluidized bed furnace.

[0008] The feeding mechanism includes a second circular shell fixed to the fluidized bed furnace, a second circular block rotatably installed inside the second circular shell via a rotating shaft, a second receiving groove corresponding to the feed pipe is opened on the upper side of the second circular block, and a flipping component is provided between the second circular block and the second circular shell.

[0009] The flipping assembly includes a rectangular shell fixed at the center of the side wall of the second circular shell, a rectangular plate slidably disposed inside the rectangular shell, a spring disposed between the rectangular plate and the rectangular shell, a circular rod fixed on one side of the rectangular plate, a circular groove opened at the center of the second circular block, a spiral groove opened on the side wall of the circular groove, and a guide block matching the spiral groove fixed inside the circular groove on the circular rod. A disc is rotatably mounted on the side wall of the boiling furnace. The lower end of the first rotating rod is connected to the disc. A push rod that abuts against the side wall of the disc is fixed on the other side of the rectangular plate. Several evenly distributed inclined grooves are opened on the side wall of the disc.

[0010] This invention, through the setting of a cyclone dust collector and a discharge mechanism, can collect incompletely burned fly ash and re-transport it back into the fluidized bed furnace for combustion, thereby realizing the recycling of high-temperature materials, improving resource utilization, and reducing resource waste.

[0011] This invention incorporates a jacketed structure on the sidewalls of the fluidized bed furnace and cyclone dust collector, and uses a fan and connecting pipes to circulate air within the jacket, thereby recovering heat from the furnace wall and high-temperature flue gas. The recovered hot air can be used to preheat the raw materials in the feed box, improving energy efficiency and reducing heat loss.

[0012] The design of the feeding mechanism in this invention allows the raw materials to be evenly distributed when entering the fluidized bed furnace, increasing the contact area between the raw materials and air, making the combustion of the raw materials more complete, and further improving the combustion efficiency and energy utilization rate.

[0013] The components in this device are cleverly linked. Airflow drives the blades to rotate, which in turn drives the discharge and spreading mechanisms. This eliminates the need for a complex power source, reducing equipment costs and energy consumption. Attached Figure Description

[0014] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of an embodiment of a high-temperature material recycling device according to the present invention; Figure 2 This is a schematic cross-sectional view of an embodiment of a high-temperature material recycling device according to the present invention. Figure 1 ; Figure 3 This is a schematic cross-sectional view of an embodiment of a high-temperature material recycling device according to the present invention. Figure 2 ; Figure 4 This is a schematic cross-sectional view of an embodiment of a high-temperature material recycling device according to the present invention. Figure 3 ; Figure 5 This is a schematic cross-sectional view of an embodiment of a high-temperature material recycling device according to the present invention. Figure 4 ; Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0016] The symbols for the main components are explained below: 1. Fluidized bed furnace, 11. Feed box, 12. Feed pipe, 13. Exhaust pipe, 2. Cyclone dust collector, 21. Air duct, 22. First circular shell, 23. Discharge pipe, 24. First circular block, 25. First receiving groove, 3. Jacket, 31. Connecting pipe, 32. Fan, 33. Shell, 34. Rotating block, 35. Blade, 36. First rotating rod, 361. First conical tooth, 37. Second transmission rod, 371. Second conical tooth, 44. Second circular shell, 41. Second receiving groove, 42. Rectangular shell, 43. Rectangular plate, 44. Spring, 45. Circular rod, 46. Circular groove, 47. Spiral groove, 471. Push rod, 48. Disc, 5. Inclined groove, 51. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1-6As shown, a high-temperature material recycling device of the present invention includes a fluidized bed furnace 1. A feed box 11 is provided on the left side of the fluidized bed furnace 1. The feed box 11 is connected to the fluidized bed furnace 1 through a feed pipe 12. An exhaust pipe 13 is provided at the upper end of the fluidized bed furnace 1. The exhaust pipe 13 is connected to a cyclone dust collector 2. An air duct 21 is provided in the middle of the cyclone dust collector 2. A discharge mechanism is provided at the bottom of the cyclone dust collector 2.

[0019] Material feeding mechanism The discharge mechanism includes a first circular shell 22 fixed to the bottom of the cyclone dust collector 2. The upper end of the first circular shell 22 is connected to the interior of the cyclone dust collector 2. The lower end of the first circular shell 22 is connected to a discharge pipe 23, which is connected to the feed pipe 12. A first circular block 24 is rotatably installed inside the first circular shell 22. The side wall of the first circular block 24 is in contact with the side wall of the first circular shell 22. The first circular block 24 has a first receiving groove 25 on both the top and bottom. The first circular block 24 is equipped with a rotating component.

[0020] The feed hopper 11 stores the combustion raw materials, which are conveyed to the fluidized bed furnace 1 through the feed pipe 12. After combustion in the fluidized bed furnace 1, the high-temperature flue gas and unburned fly ash are discharged from the exhaust pipe 13 into the cyclone dust collector 2 for dust removal. The high-temperature flue gas is discharged from the air duct 21 in the middle of the cyclone dust collector 2 into the next stage boiler, while the unburned fly ash falls to the bottom of the cyclone dust collector 2 and is discharged into the feed pipe 12 through the discharge mechanism, and then re-enters the fluidized bed furnace 1 for combustion, thus achieving recycling.

[0021] Heat recovery structure Both the fluidized bed furnace 1 and the cyclone dust collector 2 have a jacket 3 on their side walls. The jacket 3 of the fluidized bed furnace 1 and the jacket 3 of the cyclone dust collector 2 are connected by a connecting pipe 31. A fan 32 is installed at the upper end of the cyclone dust collector 2, and the fan 32 is connected to the jacket 3 of the cyclone dust collector 2.

[0022] The air jacket heat recovery in the fluidized bed furnace 1 is achieved by designing an air jacket structure in the furnace wall. This utilizes the heat exchange between the high-temperature furnace wall and the air within the jacket to recover external heat loss back into the furnace or for preheating combustion air, thereby improving energy efficiency and reducing heat loss. Similarly, after the high-temperature flue gas enters the cyclone dust collector 2, heat exchange occurs between the collector wall and the air within the jacket. The fan 32 generates airflow within the jacket, and the air enters the jacket 3 of the fluidized bed furnace 1 through the connecting pipe 31, allowing the hot air to be recycled back into the fluidized bed furnace 1. The jacket 3 of the fluidized bed furnace 1 is connected to the feed box 11 via a pipe, allowing hot air to be introduced into the feed box 11 and come into contact with the combustion materials, thus preheating the materials.

[0023] Rotating component The rotating assembly includes a housing 33 fixed to the front side of a connecting pipe 31, the housing 33 communicating with the connecting pipe 31, a rotating block 34 rotatably mounted inside the housing 33, a plurality of evenly distributed blades 35 mounted on the side wall of the rotating block 34, the blades 35 extending into the connecting pipe 31, a first rotating rod 36 rotatably mounted at the lower end of the housing 33, the first rotating rod 36 being connected to the rotating block 34 via a sprocket drive; a second transmission rod 37 rotatably mounted on the first circular shell 22, the second transmission rod 37 being connected to the first circular block 24, a first conical tooth 361 fixed to the lower side of the first rotating rod 36, and a second conical tooth 371 fixed to the second transmission rod 37 meshing with the first conical tooth 361.

[0024] When air flows in the connecting pipe 31, it can drive several blades 35 to rotate, thereby driving the first circular block 24 to rotate continuously. The first receiving groove 25 of the first circular block 24 rotates alternately to the bottom, which can cause the fly ash in the first receiving groove 25 to fall into the feed pipe 12.

[0025] Spreading mechanism A material spreading mechanism is provided between the feed pipe 12 and the fluidized bed furnace 1. The material spreading mechanism includes a second circular shell 4 fixed to the fluidized bed furnace 1. A second circular block 41 is rotatably installed inside the second circular shell 4 via a rotating shaft. A second receiving groove 42 corresponding to the feed pipe 12 is opened on the upper side of the second circular block 41. A flipping component is provided between the second circular block 41 and the second circular shell 4.

[0026] The flipping assembly includes a rectangular shell 43 fixed at the center of the side wall of a second circular shell 4. A rectangular plate 44 is slidably disposed inside the rectangular shell 43. A spring 45 is disposed between the rectangular plate 44 and the rectangular shell 43. A circular rod 46 is fixed to one side of the rectangular plate 44. A circular groove 47 is formed at the center of the second circular block 41. A spiral groove 471 is formed on the side wall of the circular groove 47. A guide block matching the spiral groove 471 is fixed inside the circular groove 47. A disc 5 is rotatably mounted on the side wall of the boiling furnace 1. The lower end of the first rotating rod 36 is connected to the disc 5. A push rod 48 is fixed to the other side of the rectangular plate 44 and abuts against the side wall of the disc 5. A plurality of evenly distributed inclined grooves 51 are formed on the side wall of the disc 5. The inclined grooves 51 are composed of straight edges and inclined edges.

[0027] When blade 35 rotates, it can drive disk 5 to rotate. When the inclined groove 51 rotates to the push rod 48, the straight edge is aligned with the push rod 48. The elastic force of spring 45 can push rectangular plate 44 to drive push rod 48 to move, so that push rod 48 quickly inserts into the bottom of inclined groove 51. Then push rod 48 contacts the inclined edge of inclined groove 51, pushing push rod 48 to retract, slowly driving rectangular plate 44 to rotate in the opposite direction to reset, until push rod 48 re-contacts the side wall of disk 5. When the push rod 48 is quickly inserted into the bottom of the inclined groove 51, the circular rod 46 slides in the circular groove 47 and slides in the spiral groove 471 through the guide block, which can drive the second circular block 41 to rotate quickly into the fluidized bed furnace 1, so that the raw material in the second receiving groove 42 is thrown into the fluidized bed furnace 1; when the push rod 48 slowly returns to its original position, the second circular block 41 rotates in the opposite direction, so that the second receiving groove 42 is located below the feed pipe 12 again, thus realizing the throwing of raw material into the fluidized bed furnace 1, so that the raw material is burned more completely.

[0028] Running process Raw material feeding: The combustion raw material is placed into the feeding box 11, and the raw material enters the second receiving trough 42 of the spreading mechanism through the feeding pipe 12.

[0029] Heat recovery and raw material preheating: Start the blower 32 to make air flow in the jacket 3 between the fluidized bed furnace 1 and the cyclone dust collector 2. The heat of the furnace wall of the fluidized bed furnace 1 and the tank wall of the cyclone dust collector 2 is exchanged with the air in the jacket. The hot air circulates between the two jackets through the connecting pipe 31, and part of the hot air enters the feed box 11 to preheat the raw materials.

[0030] The discharge mechanism operates as follows: Air flowing within the connecting pipe 31 drives the blades 35 to rotate. The blades 35, via a sprocket drive, rotate the first rotating rod 36. The first rotating rod 36, through the meshing of the first conical teeth 361 and the second conical teeth 371, drives the second transmission rod 37 to rotate, thereby causing the first circular block 24 to rotate within the first circular shell 22. Incompletely burned fly ash falls into the first receiving trough 25. As the first circular block 24 rotates, the first receiving trough 25 alternately rotates downwards, and the fly ash enters the feed pipe 12 through the discharge pipe 23, returning to the fluidized bed furnace 1 for combustion.

[0031] Operation of the material spreading mechanism: When the first rotating rod 36 rotates, it drives the disc 5 to rotate. When the inclined chute 51 rotates to the push rod 48, the spring 45 pushes the rectangular plate 44, causing the push rod 48 to quickly insert into the bottom of the inclined chute 51. The circular rod 46 slides in the circular groove 47, and through the guide block, slides in the spiral groove 471, causing the second circular block 41 to quickly rotate into the fluidized bed furnace 1, spreading the raw material in the second receiving trough 42 into the fluidized bed furnace 1. Subsequently, the push rod 48 contacts the inclined side of the inclined chute 51 and slowly resets. The second circular block 41 rotates in the opposite direction, so that the second receiving trough 42 is back below the feed pipe 12, waiting for the next material receiving and spreading.

[0032] Continuous combustion and circulation: Fluidized bed furnace 1 continuously burns, and high-temperature flue gas and fly ash are continuously circulated according to the above process. Raw materials continuously and evenly enter the fluidized bed furnace 1 for combustion, so as to achieve stable operation and efficient work of the entire device.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A high-temperature material recycling device, comprising a fluidized bed furnace, wherein a feed box is disposed on the left side of the fluidized bed furnace, and the feed box is connected to the fluidized bed furnace via a feed pipe, characterized in that: The fluidized bed furnace is provided with an exhaust pipe at the top, which is connected to a cyclone dust collector. An air duct is provided in the middle of the cyclone dust collector, and a discharge mechanism is provided at the bottom of the cyclone dust collector. The discharge mechanism includes a first circular shell fixed to the bottom of the cyclone dust collector. The upper end of the first circular shell is connected to the interior of the cyclone dust collector. The lower end of the first circular shell is connected to a discharge pipe, which is connected to the feed pipe. A first circular block is rotatably installed inside the first circular shell. The side wall of the first circular block is in contact with the side wall of the first circular shell. The first circular shell has a first receiving groove on both the top and bottom. The first circular block is equipped with a rotating component.

2. The high-temperature material recycling device according to claim 1, characterized in that: Both the fluidized bed furnace and the cyclone dust collector have interlayers on their side walls. The interlayers of the fluidized bed furnace and the cyclone dust collector are connected by a connecting pipe. A fan is installed at the top of the cyclone dust collector, and the fan is connected to the interlayer of the cyclone dust collector.

3. The high-temperature material recycling device according to claim 2, characterized in that: The rotating assembly includes a housing fixed to the front side of the connecting pipe, the housing being in communication with the connecting pipe, a rotating block being rotatably installed inside the housing, a plurality of evenly distributed blades being installed on the side wall of the rotating block, the blades extending into the connecting pipe, and a first rotating rod being rotatably installed at the lower end of the housing, the first rotating rod being connected to the rotating block via a sprocket drive. The first circular shell is rotatably mounted with a second transmission rod, which is connected to the first circular block. A first conical tooth is fixed on the lower side of the first rotating rod, and a second conical tooth that meshes with the first conical tooth is fixed on the second transmission rod.

4. The high-temperature material recycling device according to claim 3, characterized in that: A material spreading mechanism is provided between the feed pipe and the fluidized bed furnace.

5. A high-temperature material recycling device according to claim 4, characterized in that: The feeding mechanism includes a second circular shell fixed to the fluidized bed furnace, a second circular block rotatably installed inside the second circular shell via a rotating shaft, a second receiving groove corresponding to the feed pipe is opened on the upper side of the second circular block, and a flipping component is provided between the second circular block and the second circular shell.

6. A high-temperature material recycling device according to claim 5, characterized in that: The flipping assembly includes a rectangular shell fixed at the center of the side wall of the second circular shell, a rectangular plate slidably disposed inside the rectangular shell, a spring disposed between the rectangular plate and the rectangular shell, a circular rod fixed on one side of the rectangular plate, a circular groove opened at the center of the second circular block, a spiral groove opened on the side wall of the circular groove, and a guide block matching the spiral groove fixed inside the circular groove on the circular rod. A disc is rotatably mounted on the side wall of the boiling furnace. The lower end of the first rotating rod is connected to the disc. A push rod that abuts against the side wall of the disc is fixed on the other side of the rectangular plate. Several evenly distributed inclined grooves are opened on the side wall of the disc.

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