Waste heat recovery device for aluminum oxide separation

Abstract

The utility model relates to the technical field of aluminum oxide separation, and provides a waste heat recovery device for aluminum oxide separation, which comprises a recovery box, the interior of the recovery box is fixedly connected with a partition plate, the interior of the recovery box is divided into a flue gas temperature guide cavity and a temperature rising cavity through the partition plate, and one side of the partition plate located in the flue gas temperature guide cavity is fixedly connected with a temperature guide plate. A snakelike pipeline is arranged in the heat conduction plate in a penetrating mode, a smoke supply assembly and a heat transfer assembly are arranged at one end of the recycling box, the smoke supply assembly is used for supplying smoke to the snakelike pipeline, the heat transfer assembly is used for conducting smoke waste heat to the red mud iron separation procedure, a plurality of smoke exhaust assemblies are arranged at the bottom of the other end of the recycling box, and the heat transfer assembly comprises a heat supply pump and a heat supply pipe. By means of the technical scheme, the problems that in the prior art, due to the fact that effective recycling measures for waste heat in smoke are lacked, a large amount of heat energy in the smoke is dissipated and lost, the cost is increased for a production enterprise, and the development direction of current green and energy-saving production is not met are solved.

Description

Technical Field

[0001] This utility model relates to the field of alumina separation technology, specifically to a waste heat recovery device for alumina separation. Background Technology

[0002] Gas-solid separation is a key step in alumina production. Before this, crude alumina is roasted, and aluminum hydroxide decomposes into alumina and water. The water leaves the alumina solid system after roasting. The roasted material contains the target product alumina, incompletely decomposed aluminum hydroxide, and other possible impurities. In order to improve the purity of alumina products, gas-solid separation treatment is required on the roasted material.

[0003] Since the raw material for alumina gas-solid separation is a high-heat mixture containing gas and particles after calcination, after separating the solid particles, the residual high-heat flue gas needs to be introduced into a dust removal device for environmental protection treatment.

[0004] However, after environmental treatment, due to the lack of effective recovery measures, a large amount of heat energy in the flue gas will be lost, which will increase the cost for production enterprises and is not in line with the current development direction of green and energy-saving production.

[0005] Based on this, we propose a waste heat recovery device for alumina separation. Utility Model Content

[0006] This utility model proposes a waste heat recovery device for alumina separation, which solves the problem in related technologies where a large amount of heat energy in flue gas is lost due to the lack of effective recovery measures, which increases costs for production enterprises and does not conform to the current development direction of green and energy-saving production.

[0007] The technical solution of this utility model is as follows: A waste heat recovery device for alumina separation includes a recovery box. A partition is fixedly connected inside the recovery box. The inside of the recovery box is divided into a flue gas temperature conduction chamber and a heating chamber by the partition. A temperature conduction plate is fixedly connected to one side of the partition inside the flue gas temperature conduction chamber. A serpentine pipe is passed through the inside of the temperature conduction plate. A flue gas supply component and a heat transfer component are provided at one end of the recovery box. The flue gas supply component is used to supply flue gas to the serpentine pipe. The heat transfer component is used to conduct the waste heat of the flue gas to the red mud iron ore beneficiation process. Multiple exhaust components are provided at the bottom of the other end of the recovery box.

[0008] Preferably, the heat transfer assembly includes a heat pump and a heat supply pipe. One end of the recovery tank is fixedly connected to the heat pump. The output end of the heat pump is connected to one end of the heat supply pipe through a liquid supply pipe. The input end of the heat pump is fixedly connected to an external lead pipe, and the bottom end of the external lead pipe communicates with the heating chamber. The top of the recovery tank is fixedly connected to a return pipe, and the other end of the heat supply pipe is fixedly connected to the return pipe through a pipe.

[0009] Preferably, the smoke supply assembly includes an extension seat, a transmission pipe, an outlet pipe, and a diversion pipe. An extension seat is fixedly connected to the bottom of one end of the recycling box. A transmission pipe is fixedly connected to the middle of the extension seat. An outlet pipe is fixedly connected to the outer side of the transmission pipe. A diversion pipe is fixedly connected between one end of the plurality of serpentine pipes, and the end of the outlet pipe away from the transmission pipe is connected to the diversion pipe. A sealing plate is provided at one end of the transmission pipe. A support rod is fixedly connected to the side of the sealing plate near the transmission pipe. A plurality of filter plates are fixedly connected to the outer side of the support rod.

[0010] Preferably, the smoke supply assembly further includes a mounting plate, a limiting shaft, a linkage spur gear, and a limiting plate. The mounting plate is fixedly connected to one end of the transmission pipe near the sealing plate. Multiple limiting shafts are rotatably connected to the mounting plate. A linkage spur gear and a limiting plate are fixedly connected to the outer side of each limiting shaft. A linkage gear ring is rotatably connected to one edge of the mounting plate, and each linkage spur gear meshes with the linkage gear ring. One end of one of the limiting shafts has a threaded hole, and an anti-rotation screw is provided inside the threaded hole.

[0011] Preferably, the smoke exhaust assembly includes a smoke exhaust pipe, a displacement rod, and a displacement plate. Multiple smoke exhaust pipes are fixedly connected to the bottom of the other end of the recycling bin. Multiple smoke exhaust holes are opened on the outer side of the smoke exhaust pipe. A displacement rod is slidably connected to one end of the smoke exhaust pipe. A displacement plate is fixedly connected to one end of the displacement rod inside the smoke exhaust pipe, and a helical spring is fixedly connected between one side of the displacement plate and the smoke exhaust pipe.

[0012] Preferably, the recycling bin has liquid level feedback windows on both sides, and a transparent observation plate is fixedly connected inside the liquid level feedback window.

[0013] Preferably, a rubber ring is fixedly connected to one end of the transmission tube and the side of the sealing plate near the transmission tube.

[0014] Preferably, a sealing ring is fixedly connected to the outer side of the displacement plate, and the sealing ring and the inner wall of the exhaust pipe are in a transition fit.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] This invention, through its overall structural design, utilizes the principles of heat conduction and convection to transfer the waste heat from high-temperature flue gas to the red mud iron ore beneficiation process, thereby achieving full utilization of production heat energy, energy saving and consumption reduction, and effectively reducing enterprise production costs.

[0017] In this invention, the structure of the smoke supply component is designed to filter particles in the smoke before it enters the serpentine pipe, thus preventing particles from entering the serpentine pipe and causing blockage. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the recycling bin of this utility model;

[0021] Figure 3 This is a schematic diagram of the assembly structure of the serpentine pipe of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the smoke supply assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the smoke exhaust assembly of this utility model.

[0024] In the diagram: 1. Recycling bin; 2. Partition plate; 3. Flue gas temperature guiding chamber; 4. Heating chamber; 5. Temperature guiding plate; 6. Serpentine pipe; 7. Smoke supply assembly; 8. Smoke exhaust assembly; 9. Heat pump; 10. Heating pipe; 11. External lead pipe; 12. Return pipe; 13. Extension seat; 14. Transmission pipe; 15. Outlet pipe; 16. Diverter pipe; 17. Sealing plate; 18. Support rod; 19. Filter plate; 20. Mounting plate; 21. Limiting shaft; 22. Linkage spur gear; 23. Limiting plate; 24. Linkage gear ring; 25. Anti-rotation screw; 26. Smoke exhaust pipe; 27. Smoke exhaust hole; 28. Displacement rod; 29. ​​Displacement plate; 30. Helical spring. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1

[0027] like Figures 1-5 As shown, this embodiment proposes a waste heat recovery device for alumina separation, including a recovery box 1. A partition 2 is fixedly connected inside the recovery box 1. The inside of the recovery box 1 is divided into a flue gas temperature conduction chamber 3 and a heating chamber 4 by the partition 2. A temperature conduction plate 5 is fixedly connected to one side of the partition 2 inside the flue gas temperature conduction chamber 3. A serpentine pipe 6 is passed through the inside of the temperature conduction plate 5. A flue gas supply component 7 and a heat transfer component are provided at one end of the recovery box 1. The flue gas supply component 7 is used to supply flue gas to the serpentine pipe 6, and the heat transfer component is used to conduct the waste heat of the flue gas to the red mud iron ore beneficiation process. Multiple exhaust components 8 are provided at the bottom of the other end of the recovery box 1.

[0028] In detail, liquid level feedback windows are provided on both sides of the recycling tank 1, and a transparent observation plate is fixedly connected inside the liquid level feedback window. By using the liquid level feedback window, the remaining liquid in the heating chamber 4 can be displayed intuitively to remind personnel to replenish it in time.

[0029] In this embodiment, a liquid filling pipe is fixedly connected to the top of the recycling tank 1, and a sewage discharge pipe is fixedly connected to the other end of the recycling tank 1. Valves are provided on the liquid filling pipe and the sewage discharge pipe.

[0030] The heat transfer assembly includes a heat pump 9 and a heating pipe 10. One end of the recovery tank 1 is fixedly connected to the heat pump 9. The output end of the heat pump 9 is connected to one end of the heating pipe 10 through a liquid supply pipe. The input end of the heat pump 9 is fixedly connected to an external lead pipe 11, and the bottom end of the external lead pipe 11 is connected to the heating chamber 4. The top of the recovery tank 1 is fixedly connected to a return pipe 12, and the other end of the heating pipe 10 is fixedly connected to the return pipe 12 through a pipe.

[0031] The smoke supply assembly 7 includes an extension seat 13, a transmission pipe 14, an outlet pipe 15, and a diversion pipe 16. The extension seat 13 is fixedly connected to the bottom of one end of the recycling box 1. The transmission pipe 14 is fixedly connected to the middle of the extension seat 13. The outlet pipe 15 is fixedly connected to the outside of the transmission pipe 14. The diversion pipe 16 is fixedly connected between one end of the multiple serpentine pipes 6. The end of the outlet pipe 15 away from the transmission pipe 14 is connected to the diversion pipe 16. A sealing plate 17 is provided at one end of the transmission pipe 14. A support rod 18 is fixedly connected to the side of the sealing plate 17 near the transmission pipe 14. Multiple filter plates 19 are fixedly connected to the outside of the support rod 18.

[0032] In this embodiment, a rubber ring is fixedly connected to one end of the transmission pipe 14 and the side of the sealing plate 17 near the transmission pipe 14. The rubber ring can seal the connection between the transmission pipe 14 and the sealing plate 17, preventing flue gas from leaking out from the connection between the transmission pipe 14 and the sealing plate 17.

[0033] In this embodiment, the filter plate 19 can be made of activated carbon;

[0034] The smoke supply assembly 7 also includes a mounting plate 20, a limiting shaft 21, a linkage spur gear 22, and a limiting plate 23. The end of the transmission pipe 14 near the sealing plate 17 is fixedly connected to the mounting plate 20. Multiple limiting shafts 21 are rotatably connected to the mounting plate 20. A linkage spur gear 22 and a limiting plate 23 are fixedly connected to the outer side of each limiting shaft 21. A linkage gear ring 24 is rotatably connected to one side edge of the mounting plate 20, and each linkage spur gear 22 meshes with the linkage gear ring 24. One end of one of the limiting shafts 21 is provided with a threaded hole, and an anti-rotation screw 25 is provided inside the threaded hole.

[0035] Example 2

[0036] like Figures 1-5 As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes a smoke exhaust assembly 8.

[0037] In this embodiment, the smoke exhaust assembly 8 includes a smoke exhaust pipe 26, a displacement rod 28, and a displacement plate 29. Multiple smoke exhaust pipes 26 are fixedly connected to the bottom of the other end of the recycling box 1. Multiple smoke exhaust holes 27 are opened on the outer side of the smoke exhaust pipe 26. A displacement rod 28 is slidably connected to one end of the smoke exhaust pipe 26. A displacement plate 29 is fixedly connected to one end of the displacement rod 28 inside the smoke exhaust pipe 26. A coil spring 30 is fixedly connected between one side of the displacement plate 29 and the smoke exhaust pipe 26.

[0038] In this embodiment, a sealing ring is fixedly connected to the outer side of the displacement plate 29, and the sealing ring and the inner wall of the exhaust pipe 26 are in transition fit. By using the sealing ring, the connection gap between the exhaust pipe 26 and the displacement plate 29 can be effectively reduced.

[0039] A specific application of the above two embodiments is as follows: firstly, the heating pipe 10 is laid at the red mud iron ore beneficiation process, and then the transmission pipe 14 is connected to the flue gas exhaust port of the external cyclone separator, so that the flue gas can enter the transmission pipe 14 and be transmitted to the serpentine pipe 6 through the outlet pipe 15 and the diversion pipe 16. Before the flue gas reaches the outlet pipe 15, the particles in the flue gas can be filtered by the filter plate 19 to prevent impurities from entering the outlet pipe 15.

[0040] The flue gas entering the serpentine pipe 6 will flow along the path of the serpentine pipe 6. With the connection between the serpentine pipe 6 and the heat-conducting plate 5, the temperature in the flue gas will be introduced into the liquid in the heating chamber 4 through the heat-conducting plate 5, causing the liquid to heat up. Subsequently, the flue gas will be discharged into the flue gas heat-conducting chamber 3 through the serpentine pipe 6. When the air pressure in the flue gas heat-conducting chamber 3 is high, the airflow will push the displacement plate 29, causing the displacement plate 29 to move under the limit of the displacement rod 28. When the displacement plate 29 passes the exhaust hole 27, it can discharge the flue gas in the flue gas heat-conducting chamber 3 through the exhaust hole 27. Since the displacement plate 29 can squeeze the helical spring 30 when it moves, when the air pressure inside the flue gas heat-conducting chamber 3 is normal, the helical spring 30 can push the displacement plate 29 to close the exhaust pipe 26, so that the flue gas in the flue gas heat-conducting chamber 3 will not be discharged too quickly.

[0041] The heat pump 9 is started to draw out the liquid in the heating chamber 4 through the external pipe 11 and transfer it to the heating pipe 10 so that the heat is introduced into the red mud iron filtrate through the heating pipe 10, thereby heating the red mud iron filtrate. The liquid in the heating pipe 10 will then flow back to the recovery tank 1 through the pipeline, thereby achieving repeated heating of the liquid.

[0042] When the filter plate 19 has poor filtration effect, first rotate the anti-rotation screw 25 to gradually move the anti-rotation screw 25 out of the threaded hole, so as to drive the anti-rotation screw 25 away from the mounting plate 20, reducing the friction of the rotation of the limiting shaft 21. Then rotate any one of the limiting shafts 21 to cause the linkage spur gear 22 connected to the limiting shaft 21 to move the linkage gear ring 24. Since each linkage spur gear 22 is connected to the linkage gear ring 24, the linkage gear ring 24 can move the other linkage spur gears 22, thereby driving the other limiting shafts 21 to rotate at the same time. When the limiting plate 23 is disengaged from the sealing plate 17, the limiting of the sealing plate 17 can be released. Then pull the sealing plate 17 to pull the filter plate 19 out of the transmission pipe 14 for cleaning.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waste heat recovery device for alumina separation, characterized in that, The system includes a recycling bin (1), with a partition (2) fixedly connected inside the recycling bin (1). The recycling bin (1) is divided into a flue gas temperature conduction chamber (3) and a heating chamber (4) by the partition (2). A temperature conduction plate (5) is fixedly connected to one side of the partition (2) inside the flue gas temperature conduction chamber (3). A serpentine pipe (6) is installed inside the temperature conduction plate (5). A flue gas supply component (7) and a heat transfer component are provided at one end of the recycling bin (1). The flue gas supply component (7) is used to supply flue gas to the serpentine pipe (6). The heat transfer component is used to conduct the waste heat of the flue gas to the red mud iron ore beneficiation process. Multiple exhaust components (8) are provided at the bottom of the other end of the recycling bin (1).

2. The waste heat recovery device for alumina separation according to claim 1, characterized in that, The heat transfer assembly includes a heat pump (9) and a heat supply pipe (10). One end of the recovery box (1) is fixedly connected to the heat pump (9). The output end of the heat pump (9) is connected to one end of the heat supply pipe (10) through a liquid supply pipe. The input end of the heat pump (9) is fixedly connected to an external lead pipe (11), and the bottom end of the external lead pipe (11) is connected to the heating chamber (4). The top of the recovery box (1) is fixedly connected to a return pipe (12), and the other end of the heat supply pipe (10) is fixedly connected to the return pipe (12) through a pipe.

3. The waste heat recovery device for alumina separation according to claim 1, characterized in that, The smoke supply assembly (7) includes an extension seat (13), a transmission pipe (14), an outlet pipe (15), and a diversion pipe (16). The bottom of one end of the recycling box (1) is fixedly connected to the extension seat (13). The middle part of the extension seat (13) is fixedly connected to the transmission pipe (14). The outer side of the transmission pipe (14) is fixedly connected to the outlet pipe (15). One end of the multiple serpentine pipes (6) is fixedly connected to the diversion pipe (16). The end of the outlet pipe (15) away from the transmission pipe (14) is connected to the diversion pipe (16). One end of the transmission pipe (14) is provided with a sealing plate (17). The side of the sealing plate (17) close to the transmission pipe (14) is fixedly connected to a support rod (18). The outer side of the support rod (18) is fixedly connected to multiple filter plates (19).

4. The waste heat recovery device for alumina separation according to claim 3, characterized in that, The smoke supply assembly (7) also includes a mounting plate (20), a limiting shaft (21), a linkage spur gear (22), and a limiting plate (23). The end of the transmission pipe (14) near the sealing plate (17) is fixedly connected to the mounting plate (20). Multiple limiting shafts (21) are rotatably connected to the mounting plate (20). A linkage spur gear (22) and a limiting plate (23) are fixedly connected to the outer side of each limiting shaft (21). A linkage gear ring (24) is rotatably connected to one side edge of the mounting plate (20), and each linkage spur gear (22) is meshed with the linkage gear ring (24). One end of one of the limiting shafts (21) is provided with a threaded hole, and an anti-rotation screw (25) is provided inside the threaded hole.

5. The waste heat recovery device for alumina separation according to claim 3, characterized in that, The smoke exhaust assembly (8) includes a smoke exhaust pipe (26), a displacement rod (28) and a displacement plate (29). Multiple smoke exhaust pipes (26) are fixedly connected to the bottom of the other end of the recycling box (1). Multiple smoke exhaust holes (27) are opened on the outside of the smoke exhaust pipe (26). A displacement rod (28) is slidably connected to one end of the smoke exhaust pipe (26). A displacement plate (29) is fixedly connected to one end of the displacement rod (28) inside the smoke exhaust pipe (26). A helical spring (30) is fixedly connected between one side of the displacement plate (29) and the smoke exhaust pipe (26).

6. The waste heat recovery device for alumina separation according to claim 1, characterized in that, The recycling bin (1) has liquid level feedback windows on both sides, and a transparent observation plate is fixedly connected inside the liquid level feedback window.

7. The waste heat recovery device for alumina separation according to claim 3, characterized in that, Rubber rings are fixedly connected to one end of the transmission pipe (14) and the side of the sealing plate (17) near the transmission pipe (14).

8. The waste heat recovery device for alumina separation according to claim 5, characterized in that, A sealing ring is fixedly connected to the outer side of the displacement plate (29), and the sealing ring and the inner wall of the exhaust pipe (26) are in transition fit.

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