Graphitization furnace heat energy cascade recycling device

Abstract

The utility model belongs to the technical field of heat energy recovery, and particularly relates to a graphitization furnace heat energy cascade recycling device which comprises a graphitization furnace body, primary heat recovery equipment and secondary heat recovery equipment, the graphitization furnace body, the primary heat recovery equipment and the secondary heat recovery equipment are sequentially communicated through flue gas pipelines, the primary heat recovery equipment comprises a bottom plate, and the secondary heat recovery equipment comprises a bottom plate. A heat exchanger is installed on the upper side of the bottom plate, communicating pipes are fixedly connected to the front end and the rear end of the heat exchanger, first annular pieces are fixedly connected to the ends of the communicating pipes, support bodies are fixedly connected to the front end and the rear end of the upper side of the bottom plate, telescopic pipes are fixedly connected to the support bodies, and the telescopic pipes communicate with a smoke pipeline. The telescopic pipe comprises an outer pipe fixedly connected to the support body, one end of the outer pipe communicates with the flue gas pipeline, and an inner pipe is slidably connected to the interior of the outer pipe. According to the utility model, the heat exchanger can be simply disassembled and assembled, and the first-stage heat recovery equipment can be conveniently and regularly maintained.

Description

Technical Field

[0001] This utility model belongs to the field of heat energy recovery technology, specifically relating to a device for the cascade recovery and utilization of heat energy from a graphitization furnace. Background Technology

[0002] During the graphitization process, graphitization furnaces generate large amounts of high-temperature flue gas, which carries a significant amount of heat energy. Traditional methods often involve direct emission, resulting in substantial energy waste and adverse environmental impacts such as thermal pollution. With increasingly stringent energy conservation and environmental protection requirements, the need for heat recovery and utilization from graphitization furnaces is becoming increasingly urgent.

[0003] Currently, some heat recovery and utilization devices connect a primary heat recovery device and a secondary heat recovery device sequentially to the outside of the graphitization furnace body. The heat energy of the graphitization furnace is recovered sequentially through the primary and secondary heat recovery devices to ensure the heat energy recovery effect.

[0004] However, in practical applications, the high-temperature flue gas entering the primary heat recovery equipment contains a lot of impurities and high temperatures, which can cause a lot of damage to the primary heat recovery equipment. Frequent disassembly and maintenance of the primary heat recovery equipment is required, but the disassembly and assembly efficiency of the primary heat recovery equipment is poor, resulting in poor disassembly and maintenance efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a graphitization furnace heat energy cascade recovery and utilization device, which can easily disassemble and assemble the heat exchanger and facilitate regular maintenance of the primary heat recovery equipment.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A graphitization furnace heat energy cascade recovery and utilization device includes a graphitization furnace body, a primary heat recovery device, and a secondary heat recovery device. The graphitization furnace body, the primary heat recovery device, and the secondary heat recovery device are connected sequentially through a flue gas pipeline. The primary heat recovery device includes a base plate, and a heat exchanger is installed on the upper side of the base plate. Both ends of the heat exchanger are fixedly connected to connecting pipes, and an annular plate is fixedly connected to the end of the connecting pipe. Both ends of the upper side of the base plate are fixedly connected to support bodies, and telescopic pipes are fixedly connected to the support bodies. The telescopic pipes are connected to the flue gas pipeline.

[0008] Furthermore, the telescopic tube includes an outer tube fixedly connected to the support body, one end of the outer tube being connected to the flue gas duct, an inner tube being slidably connected inside the outer tube, one end of the inner tube being fixedly connected to an annular plate two opposite to the annular plate one, an electric telescopic rod being fixedly connected to the outside of the outer tube, and the piston rod of the electric telescopic rod being fixedly connected to the annular plate two.

[0009] Furthermore, an annular seat is fixedly connected to the side of the first annular piece, and an annular groove is provided on one side of the annular seat. An expansion-shaped sealing ring that matches the annular groove is fixedly connected to the side of the second annular piece near the first annular piece.

[0010] Furthermore, the expansion sealing ring includes a sealing ring body and an air pump. The sealing ring body is fixedly connected to the side of the second annular piece near the first annular piece, and the air pump is fixedly connected to the second annular piece. An air cavity is opened inside the sealing ring body, and the air pump is connected to the air cavity.

[0011] Furthermore, a groove body is formed on the inner wall of the annular groove, and a protrusion adapted to the groove body is formed on the periphery of the sealing ring body.

[0012] Furthermore, the sealing ring body is made of a sealing strip or sealing felt woven from ceramic fibers.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This utility model discloses a graphitization furnace heat energy cascade recovery and utilization device. Through the telescopic movement of the telescopic tube, the primary heat recovery equipment can be easily connected and separated from the flue gas pipeline, thus simplifying the disassembly and assembly of the heat exchanger and facilitating regular maintenance of the primary heat recovery equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the primary heat recovery equipment of this utility model;

[0017] Figure 3 This is a partial cross-sectional structural diagram of the primary heat recovery device of this utility model;

[0018] Figure 4 This is a utility model Figure 1 Side view of the structure at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the structure of the annular seat and sealing ring of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Graphitization furnace body; 2. Primary heat recovery equipment; 3. Secondary heat recovery equipment; 4. Flue gas duct; 5. Base plate; 6. Heat exchanger; 7. Connecting pipe; 8. Annular plate one; 9. Outer pipe; 10. Inner pipe; 11. Annular plate two; 12. Electric telescopic rod; 13. Annular seat; 14. Support body; 15. Annular groove; 16. Sealing ring body; 17. Groove body; 18. Gas chamber; 19. Air pump; 20. Protrusion. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] like Figures 1-5 As shown, a graphitization furnace heat energy cascade recovery and utilization device includes a graphitization furnace body 1, a primary heat recovery device 2, and a secondary heat recovery device 3. The graphitization furnace body 1, the primary heat recovery device 2, and the secondary heat recovery device 3 are connected sequentially through a flue gas pipeline 4. The high-temperature flue gas discharged from the graphitization furnace body 1 enters the interior of the primary heat recovery device 2 and contacts the primary cooling medium for the first stage of heat energy recovery. After the heat energy is recovered by the primary heat recovery device 2, the temperature of the flue gas decreases, forming low-temperature flue gas. The low-temperature flue gas enters the interior of the secondary heat recovery device 3 and contacts the secondary cooling medium for the second stage of heat energy recovery, and then the flue gas is discharged.

[0024] Both the primary and secondary cooling media can be water.

[0025] Because the high-temperature flue gas entering the primary heat recovery device 2 contains a lot of impurities and high temperatures, it will cause a lot of damage to the primary heat recovery device 2. Therefore, it is necessary to frequently disassemble and maintain the primary heat recovery device 2 regularly. This technical solution improves the primary heat recovery device 2 to enhance the efficiency of disassembly and maintenance.

[0026] like Figures 1-3As shown, the primary heat recovery device 2 includes a base plate 5. A heat exchanger 6 is installed on the upper side of the base plate 5. The heat exchanger 6 can be installed on the upper side of the base plate 5 by means of snap-fit, magnetic attraction, or placement. Both the front and rear ends of the heat exchanger 6 are fixedly connected to connecting pipes 7. An annular plate 8 is fixedly connected to the end of the connecting pipe 7. Both the front and rear ends of the upper side of the base plate 5 are fixedly connected to support bodies 14. A telescopic pipe is fixedly connected to the support body 14. The telescopic pipe is connected to the flue gas pipe 4. When maintaining the heat exchanger 6, the telescopic pipe is activated to separate the telescopic pipe from the annular plate 8, so that the heat exchanger 6 can be disassembled and maintained. After the heat exchanger 6 is maintained, it can be reinstalled. Then the telescopic pipe is activated to make the telescopic pipe and the annular plate 8 abut and connect, so that the installation of the heat exchanger 6 can be completed. This makes the disassembly and assembly of the heat exchanger 6 relatively simple and facilitates the regular maintenance of the primary heat recovery device 2.

[0027] The telescopic tube includes an outer tube 9 fixedly connected to the support body 14. One end of the outer tube 9 is connected to the flue gas duct 4. An inner tube 10 is slidably connected inside the outer tube 9. One end of the inner tube 10 is fixedly connected to an annular plate 11 opposite to the annular plate 8. An electric telescopic rod 12 is fixedly connected to the outside of the outer tube 9. The piston rod of the electric telescopic rod 12 is fixedly connected to the annular plate 11. At this time, by starting the electric telescopic rod 12, the annular plate 11 can be moved. The telescopic movement of the telescopic tube can be controlled in a relatively simple way. The contact area is increased by the annular plate 8 and the annular plate 11, which improves the sealing performance.

[0028] like Figures 2-5 As shown, an annular plate 8 is fixedly connected to an annular seat 13 on its side. The annular seat 13 is made of iron or ceramic, preferably ceramic. An annular groove 15 is provided on one side of the annular seat 13. An annular plate 11 is fixedly connected to an expansion-shaped sealing ring that matches the annular groove 15 near the side of the annular plate 8. The expansion-shaped sealing ring can move into the annular groove 15 to expand and contract. When the expansion-shaped sealing ring expands inside the annular groove 15, it can reduce the gap between the expansion-shaped sealing ring and the inner wall of the annular groove 15, thus improving the sealing performance. When the expansion-shaped sealing ring contracts, it can increase the gap between the expansion-shaped sealing ring and the inner wall of the annular groove 15, making it easier for the expansion-shaped sealing ring to enter or move out of the annular groove 15.

[0029] Among them, such as Figures 2-5 As shown, the expansion seal ring includes a seal ring body 16 and an air pump 19. The seal ring body 16 is fixedly connected to the side of the second annular piece 11 near the first annular piece 8. The air pump 19 is fixedly connected to the second annular piece 11. An air chamber 18 is opened inside the seal ring body 16. The air pump 19 is connected to the air chamber 18. At this time, by starting the air pump 19 to inflate or deflate the air chamber 18, the expansion range of the seal ring body 16 can be adjusted relatively easily.

[0030] Specifically, in order to ensure the fire resistance of the sealing ring 16, the sealing ring 16 needs to be made of a sealing strip or sealing felt woven from ceramic fibers.

[0031] Meanwhile, the sealing ring body 16 can also be a metal bellows made of nickel-based alloy, or a sealing ring made of silicon carbide ceramic.

[0032] To further improve the sealing performance, a groove body 17 is provided on the inner wall of the annular groove 15, and a protrusion 20 that matches the groove body 17 is formed on the periphery of the sealing ring body 16. When the protrusion 20 enters the groove body 17, it can change the shape of the gap between the annular groove 15 and the sealing ring body 16, thereby improving the sealing performance.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A device for the cascade recovery and utilization of thermal energy from a graphitization furnace, characterized in that: The system includes a graphitization furnace body (1), a primary heat recovery device (2), and a secondary heat recovery device (3). The graphitization furnace body (1), the primary heat recovery device (2), and the secondary heat recovery device (3) are connected in sequence through a flue gas pipe (4). The primary heat recovery device (2) includes a base plate (5). A heat exchanger (6) is installed on the upper side of the base plate (5). A connecting pipe (7) is fixedly connected to both the front and rear ends of the heat exchanger (6). An annular plate (8) is fixedly connected to the end of the connecting pipe (7). A support body (14) is fixedly connected to both the front and rear ends of the upper side of the base plate (5). A telescopic pipe is fixedly connected to the support body (14). The telescopic pipe is connected to the flue gas pipe (4).

2. The graphitization furnace heat energy cascade recovery and utilization device according to claim 1, characterized in that: The telescopic tube includes an outer tube (9) fixedly connected to the support body (14), one end of the outer tube (9) is connected to the flue gas pipe (4), an inner tube (10) is slidably connected inside the outer tube (9), one end of the inner tube (10) is fixedly connected to an annular plate two (11) opposite to the annular plate one (8), an electric telescopic rod (12) is fixedly connected to the outside of the outer tube (9), and the piston rod of the electric telescopic rod (12) is fixedly connected to the annular plate two (11).

3. The graphitization furnace heat energy cascade recovery and utilization device according to claim 2, characterized in that: The annular plate one (8) is fixedly connected to an annular seat (13) on one side, and an annular groove (15) is provided on one side of the annular seat (13). The annular plate two (11) is fixedly connected to an expansion sealing ring that matches the annular groove (15) on the side of the annular plate one (8).

4. The graphitization furnace heat energy cascade recovery and utilization device according to claim 3, characterized in that: The expansion sealing ring includes a sealing ring body (16) and an air pump (19). The sealing ring body (16) is fixedly connected to the side of the second annular piece (11) near the first annular piece (8). The air pump (19) is fixedly connected to the second annular piece (11). An air chamber (18) is opened inside the sealing ring body (16). The air pump (19) and the air chamber (18) are connected.

5. The graphitization furnace heat energy cascade recovery and utilization device according to claim 4, characterized in that: The inner wall of the annular groove (15) is provided with a groove body (17), and the periphery of the sealing ring body (16) is provided with a protrusion (20) that matches the groove body (17).

6. The graphitization furnace heat energy cascade recovery and utilization device according to claim 4, characterized in that: The sealing ring (16) is made of a sealing strip or sealing felt woven from ceramic fibers.

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