A waste heat recovery and utilization device for graphitization furnace

Abstract

This utility model relates to the field of waste heat recovery technology, specifically a waste heat recovery and utilization device for a graphitization furnace, comprising a shell; flanges are fixedly installed at both ends of the shell; a recovery assembly is disposed inside the shell, the recovery assembly includes heat exchange tubes installed inside the shell, and an inlet pipe is fixedly installed on one side of the top of the heat exchange tubes. This utility model utilizes multiple sets of guide plates fixedly installed at the bottom of the mounting block, with the guide plates arranged in a crisscross pattern. Each set of guide plates is positioned between the gaps of the heat exchange tubes. When waste gas enters the shell through one flange, it exchanges heat with the medium inside the heat exchange tubes. Simultaneously, the waste gas flows in a tortuous manner under the action of the guide plates, fully releasing heat before exiting from the other flange. This significantly increases the contact area and time between the waste gas and the heat exchange tubes, enabling the full extraction of heat from the waste gas and improving heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically to a waste heat recovery and utilization device for a graphitization furnace. Background Technology

[0002] A graphitization furnace is a high-temperature processing device used for the sintering and graphitization of carbon materials, typically with a furnace core temperature of 2500~3000℃. This equipment achieves carbon material conversion through resistance or induction heating and requires operation in an inert atmosphere of argon or nitrogen to prevent oxidation. During production, the flue gas discharged from the graphitization furnace reaches temperatures as high as 800~1200℃, carrying a large amount of heat energy.

[0003] Graphitization furnaces generate a large amount of waste heat during operation. If this waste heat is not recovered and utilized, it will not only cause a huge waste of energy, but also lead to an increase in the ambient temperature and cause thermal pollution. At present, some companies have realized the importance of waste heat recovery from graphitization furnaces and will use waste heat recovery devices to recover the waste heat.

[0004] However, existing waste heat recovery devices have some shortcomings. Some waste heat recovery devices have a relatively simple recovery path, which makes it difficult to fully extract the heat from the exhaust gas discharged from the graphitization furnace, resulting in low heat exchange efficiency. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a waste heat recovery and utilization device for graphitization furnace, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a waste heat recovery and utilization device for a graphitization furnace, including a shell; Flanges are fixedly installed at both the front and rear ends of the shell; a recovery assembly is disposed inside the shell, the recovery assembly includes a heat exchange tube installed inside the shell, an inlet pipe is fixedly installed on one side of the top of the heat exchange tube, and an outlet pipe is fixedly installed on one side of the bottom of the heat exchange tube; a drainage assembly is installed at the bottom of the shell.

[0007] Furthermore, the recycling assembly also includes a top cover, which is disposed on the top of the housing. A locking block is fixedly installed at the bottom of the top cover and is embedded inside the top of the housing. A guide plate is fixedly installed at the bottom of the locking block.

[0008] Furthermore, a blower is connected to one side of the flange at one end.

[0009] Furthermore, multiple sets of the guide plates are provided, with each set of guide plates disposed between the gaps of the heat exchange tubes, and the guide plates are distributed in a crisscross pattern.

[0010] Furthermore, the drainage assembly includes support legs, which are fixedly installed at the four bottom corners of the housing. A screw is installed between the support legs on one side via bearings, and a sliding rod is installed between the support legs on the other side via bearings. A drainage groove is provided at the bottom of the housing, and a baffle is provided at the bottom of the drainage groove. Two sets of baffles are provided symmetrically. Slider blocks are fixedly installed on both sides of the baffle. The screw passes through the slider on one side via a thread, and the sliding rod passes directly through the slider on the other side. A motor is provided at one end of the screw, and the output end of the motor is directly connected to one end of the screw.

[0011] Furthermore, the screw has threads on both sides of the middle dividing line that rotate in opposite directions.

[0012] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. By fixing multiple sets of guide plates at the bottom of the card block, and the guide plates are distributed in a cross pattern, with each set of guide plates set between the gaps of the heat exchange tubes, when the exhaust gas enters the shell through the flange at one end, the exhaust gas exchanges heat with the medium in the heat exchange tubes inside the shell. At the same time, the exhaust gas flows in a tortuous manner under the action of the guide plates, and after fully releasing the heat, it is discharged from the flange at the other end. This greatly increases the contact area and time between the exhaust gas and the heat exchange tubes, which can fully extract the heat in the exhaust gas and improve the efficiency of heat exchange.

[0013] 2. When it is necessary to clean the inside of the shell and the heat exchange tubes, the top cover can be removed from the top and the motor can be started. The motor can drive the two sets of baffles to open to both sides, so that the cleaning water can be discharged through the drain trough, which improves the convenience of cleaning and helps to extend the service life of the device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the guide plate of this utility model; Figure 3 This is a bottom view of the internal structure of the housing of this utility model; Figure 4 This is a structural breakdown diagram of the drainage component of this utility model.

[0016] The labels in the diagram represent: 1. Shell; 2. Flange; 3. Blower; 4. Heat exchange tube; 5. Inlet pipe; 6. Outlet pipe; 7. Top cover; 8. Locking block; 9. Guide plate; 10. Support leg; 11. Screw; 12. Slide rod; 13. Baffle; 14. Slider; 15. Motor; 16. Drainage trough. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The present invention will be further described below with reference to the embodiments. Example 1:

[0019] Reference Figure 1-3 The first embodiment of this utility model discloses a waste heat recovery and utilization device for a graphitization furnace, characterized in that it includes a shell 1; Flanges 2 are fixedly installed at both the front and rear ends of the housing 1; The recovery component is located inside the housing 1. The recovery component includes a heat exchange tube 4, which is installed inside the housing 1. An inlet pipe 5 is fixedly installed on one side of the top of the heat exchange tube 4, and an outlet pipe 6 is fixedly installed on one side of the bottom of the heat exchange tube 4. The recovery component also includes a top cover 7, which is located on the top of the housing 1. A locking block 8 is fixedly installed on the bottom of the top cover 7 and is embedded inside the top of the housing 1. A guide plate 9 is fixedly installed on the bottom of the locking block 8, which realizes the function of recovering heat through the heat exchange tube 4. A circulation pump is connected to the outside of the inlet pipe 5 and the outlet pipe 6 to ensure that water always flows inside the heat exchange tube 4. A blower 3 is connected to one side of one flange 2, which allows the exhaust gas to move from one flange 2 to the other flange 2, thus realizing the flow of exhaust gas. Multiple sets of guide plates 9 are provided, with each set of guide plates 9 positioned between the gaps of the heat exchange tubes 4. The guide plates 9 are distributed in a crisscross pattern, which enables the exhaust gas to fully contact the heat exchange tubes 4 and slows down the flow rate of the exhaust gas, thereby improving the heat exchange quality of the device. Example 2:

[0020] Reference Figure 4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a drainage component is installed at the bottom of the housing 1. The drainage component includes support legs 10, which are fixedly installed at the four corners of the bottom of the housing 1. A screw 11 is installed between the support legs 10 on one side through a bearing, and a slide rod 12 is installed between the support legs 10 on the other side through a bearing. A drainage groove 16 is provided at the bottom of the housing 1, and a baffle 13 is provided at the bottom of the drainage groove 16. The baffle 13 is provided in two symmetrical sets. Slider blocks 14 are fixedly installed on both the left and right sides of the baffle 13. The screw 11 passes through the slider 14 on one side through a thread, and the slide rod 12 passes directly through the slider 14 on the other side. A motor 15 is provided at one end of the screw 11, and the output end of the motor 15 is directly connected to one end of the screw 11. Water can be used to clean the inside of the housing 1 directly, and wastewater can be discharged directly through the drainage groove 16, which improves the convenience of cleaning. The screw 11 has its threads rotating in opposite directions on both sides of the middle dividing line, which allows the two sets of sliders 14 to move inward or outward simultaneously when the screw 11 rotates.

[0021] The remaining structure is the same as that in Example 1.

[0022] The workflow of this utility model is as follows: First, connect the exhaust pipe to flange 2 at one end, then start the blower 3. The blower 3 will continuously draw gas from inside the shell 1. After the high-temperature exhaust gas enters the shell 1, it exchanges heat with the medium in the heat exchange tube 4 inside the shell 1. The exhaust gas flows in a tortuous manner under the action of the guide plate 9, and after fully releasing the heat, it is discharged from flange 2 at the other end. Secondly, after use, the top cover 7 can be opened, and the guide plate 9 can be pulled out from between the heat exchange tubes 4. Then the inner wall of the shell 1 and the heat exchange tubes 4 can be cleaned. Finally, start the motor 15. The motor 15 can drive the screw 11 to rotate. The screw 11 can drive the two sets of sliders 14 on the same side to move outward. The sliders 14 can drive the baffle 13 to move outward. At this time, the wastewater accumulated at the bottom of the housing 1 can be discharged through the drain trough 16.

[0023] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A waste heat recovery and utilization device for a graphitization furnace, characterized in that, Includes the housing (1); Flanges (2) are fixedly installed at both the front and rear ends of the housing (1); The recovery assembly is located inside the housing (1). The recovery assembly includes a heat exchange tube (4). The heat exchange tube (4) is installed inside the housing (1). An inlet pipe (5) is fixedly installed on one side of the top of the heat exchange tube (4), and an outlet pipe (6) is fixedly installed on one side of the bottom of the heat exchange tube (4). A drainage assembly is installed at the bottom of the housing (1).

2. The waste heat recovery and utilization device for a graphitization furnace according to claim 1, characterized in that, The recycling assembly also includes a top cover (7), which is disposed on the top of the housing (1). A locking block (8) is fixedly installed at the bottom of the top cover (7) and the locking block (8) is embedded inside the top of the housing (1). A guide plate (9) is fixedly installed at the bottom of the locking block (8).

3. The waste heat recovery and utilization device for a graphitization furnace according to claim 1, characterized in that, A blower (3) is connected to one side of the flange (2) at one end.

4. The waste heat recovery and utilization device for a graphitization furnace according to claim 2, characterized in that, The guide plates (9) are provided in multiple sets, and each set of the guide plates (9) is provided between the gaps of the heat exchange tubes (4). The guide plates (9) are distributed in a cross pattern.

5. The waste heat recovery and utilization device for a graphitization furnace according to claim 1, characterized in that, The drainage assembly includes legs (10), which are fixedly installed at the four corners of the bottom of the housing (1). A screw (11) is installed between the legs (10) on one side through a bearing, and a slide rod (12) is installed between the legs (10) on the other side through a bearing. A drainage groove (16) is provided at the bottom of the housing (1), and a baffle (13) is provided at the bottom of the drainage groove (16). The baffle (13) is provided in two symmetrical sets. Slider blocks (14) are fixedly installed on both the left and right sides of the baffle (13). The screw (11) passes through the slider (14) on one side through a thread, and the slide rod (12) passes directly through the slider (14) on the other side. A motor (15) is provided at one end of the screw (11), and the output end of the motor (15) is directly connected to one end of the screw (11).

6. The waste heat recovery and utilization device for a graphitization furnace according to claim 5, characterized in that, The screw (11) has its threads rotating in opposite directions on both sides of the middle dividing line.

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