A device for recovering waste heat from graphitized high-temperature flue gas

Abstract

The present invention discloses a device for recycling waste heat from graphitized high-temperature flue gas, comprising a crucible, an exhaust pipe fixedly mounted on the top of the crucible, a heat storage cylinder fixedly mounted on the end of the exhaust pipe away from the crucible, a partition fixedly mounted on the inner wall of the heat storage cylinder, the partition being arranged above the exhaust pipe, a connecting pipe fixedly mounted on the outer surface of the heat storage cylinder below the partition, a filtering mechanism provided at the end of the connecting pipe away from the heat storage cylinder, and a flow guide mechanism provided on the outer surface of the heat storage cylinder. The present invention connects a water inlet pipe to inject an external water source into the heat storage cylinder, and guides the high-temperature flue gas generated in the crucible into the heat storage cylinder through the exhaust pipe. Since a partition is provided inside the heat storage cylinder, the high-temperature flue gas can heat the water source in the heat storage cylinder below the partition, and the heated water source can be used in places where heat energy is required, thereby avoiding waste of heat energy in the high-temperature flue gas.

Description

Technical Field

[0001] The present invention relates to the technical field of graphitization processing, and in particular to a device for recovering waste heat of graphitization high-temperature flue gas. Background Art

[0002] At present, the domestic production of graphite electrodes relies on high-temperature graphitization of carbon rods using large currents. The graphitization process consumes a huge amount of energy, and the temperature inside the graphitization furnace reaches over 2600°C during the graphitization process.

[0003] During the graphitization process, high-temperature gases of around 1100°C are generated at the top of the graphitization furnace. These gases are discharged through the chimney, carrying away a large amount of heat energy, resulting in serious heat loss. This heat loss accounts for approximately 30%-45% of the total heat generated during the graphitization process, resulting in a huge waste of energy. Furthermore, the direct emission of dust particles contained in the high-temperature gases can cause serious atmospheric pollution, worsening the environment and climate. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a graphitized high-temperature flue gas waste heat recovery and utilization device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for recovering and utilizing waste heat from graphitized high-temperature flue gas comprises a crucible, an exhaust pipe being fixedly mounted on the top of the crucible, a heat storage cylinder being fixedly mounted on the end of the exhaust pipe away from the crucible, a partition being fixedly mounted on the inner wall of the heat storage cylinder, the partition being arranged above the exhaust pipe, a connecting pipe being fixedly mounted on the outer surface of the heat storage cylinder below the partition, a filtering mechanism being provided on the end of the connecting pipe away from the heat storage cylinder, and a flow guide mechanism being provided on the outer surface of the heat storage cylinder.

[0007] As a further solution of the present invention, the filtering mechanism includes a filter box connected to the connecting pipe, the inner wall of the filter box above the connecting pipe is fixedly installed with a baffle, the outer surface of the baffle is evenly penetrated with multiple through holes, and the outer surface of the filter box away from the connecting pipe is fixedly installed with an air outlet pipe.

[0008] As a further solution of the present invention, the flow guide mechanism includes a flow guide tube fixedly mounted on the outer surface of the heat storage cylinder, the flow guide tube is arranged close to the top of the heat storage cylinder, the end of the flow guide tube away from the heat storage cylinder is fixedly mounted on the upper surface of the filter box, and the flow guide tube is connected to the interior of the filter box, and a flow stopping mechanism is provided on the outer surface of the flow guide tube.

[0009] As a further solution of the present invention, the flow stopping mechanism includes a fixed tube fixedly installed on the guide tube, a conical tube fixedly installed on the top end of the fixed tube, a top bead is provided inside the fixed tube, the top bead is abutted against the inner wall of the conical tube, and a tightening component is provided inside the fixed tube.

[0010] As a further solution of the present invention, the tightening assembly includes a thrust spring inserted into the interior of the fixing tube, and the thrust spring is arranged between the top ball and the bottom wall of the fixing tube.

[0011] As a further solution of the present invention, a water inlet pipe and a water outlet pipe are respectively provided at the top of the heat storage cylinder.

[0012] As a further solution of the present invention, a rectangular opening is penetrated through the outer surface of one side of the filter box, a collection box is slidably mounted on the inner wall of the rectangular opening, and a handle is fixedly mounted on the outer surface of the collection box.

[0013] As a further solution of the present invention, an activated carbon layer is fixedly installed on the inner wall of the filter box close to the air outlet pipe.

[0014] The beneficial effects of the present invention are:

[0015] 1. By connecting the water inlet pipe, the external water source is injected into the heat storage cylinder, and the high-temperature flue gas generated in the crucible is introduced into the heat storage cylinder through the exhaust pipe. Since the heat storage cylinder is provided with a partition inside, the high-temperature flue gas can heat the water source in the heat storage cylinder under the partition. The heated water source can be used in various places where heat energy is needed, avoiding the waste of heat energy in the high-temperature flue gas.

[0016] 2. As the high-temperature flue gas is continuously injected into the heat storage cylinder, the high-temperature flue gas will flow into the filter box through the connecting pipe. At this time, the water source in the heat storage cylinder will generate a large amount of water vapor, so that the water vapor can enter the filter box through the guide pipe, so that the water vapor humidifies the flue gas in the filter box, so that the dust particles in the flue gas fall into the collection box for collection, thereby filtering the flue gas and preventing the dust in the flue gas from entering the natural environment and causing pollution.

[0017] 3. By setting a tapered tube and a top bead on the guide pipe, the flue gas in the filter box cannot enter the heat storage cylinder, and only the water vapor in the heat storage cylinder is allowed to enter the filter box, preventing the dust in the flue gas from entering the heat storage cylinder and polluting the water source. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a graphitization high-temperature flue gas waste heat recovery and utilization device proposed by the present invention;

[0019] Figure 2This is a schematic cross-sectional view of a graphitization high-temperature flue gas waste heat recovery and utilization device proposed by the present invention;

[0020] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of a filter box of a graphitized high-temperature flue gas waste heat recovery and utilization device proposed by the present invention.

[0022] In the figure: 1. Crucible; 2. Heat storage cylinder; 3. Exhaust pipe; 4. Water inlet pipe; 5. Water outlet pipe; 6. Partition; 7. Connecting pipe; 8. Filter box; 9. Guide pipe; 10. Conical tube; 11. Fixed tube; 12. Top ball; 13. Thrust spring; 14. Exhaust pipe; 15. Baffle; 16. Rectangular opening; 17. Collecting box; 18. Handle; 19. Through hole; 20. Activated carbon layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Example 1

[0026] Reference Figure 1-3 A device for recovering and utilizing waste heat from graphitized high-temperature flue gas comprises a crucible 1, an exhaust pipe 3 is fixedly mounted on the top of the crucible 1, a heat storage cylinder 2 is fixedly mounted on the end of the exhaust pipe 3 away from the crucible 1, a partition 6 is fixedly mounted on the inner wall of the heat storage cylinder 2, the partition 6 is arranged above the exhaust pipe 3, a connecting pipe 7 is fixedly mounted on the outer surface of the heat storage cylinder 2 below the partition 6, a filtering mechanism is provided on the end of the connecting pipe 7 away from the heat storage cylinder 2, and a flow guide mechanism is provided on the outer surface of the heat storage cylinder 2.

[0027] In this embodiment, the filtering mechanism includes a filter box 8 connected to the connecting pipe 7. A baffle 15 is fixedly installed on the inner wall of the filter box 8 above the connecting pipe 7. A plurality of through holes 19 are evenly penetrated through the outer surface of the baffle 15. An air outlet pipe 14 is fixedly installed on the outer surface of the filter box 8 away from the connecting pipe 7.

[0028] In this embodiment, the flow guide mechanism includes a flow guide tube 9 fixedly mounted on the outer surface of the heat storage cylinder 2. The flow guide tube 9 is arranged near the top of the heat storage cylinder 2. The end of the flow guide tube 9 away from the heat storage cylinder 2 is fixedly mounted on the upper surface of the filter box 8, and the flow guide tube 9 is connected to the interior of the filter box 8. A flow stopping mechanism is provided on the outer surface of the flow guide tube 9.

[0029] In this embodiment, the flow stopping mechanism includes a fixed tube 11 fixedly installed on the guide tube 9, a conical tube 10 is fixedly installed on the top end of the fixed tube 11, a top bead 12 is provided inside the fixed tube 11, the top bead 12 is abutted against the inner wall of the conical tube 10, and a tightening component is provided inside the fixed tube 11.

[0030] In this embodiment, the pressing assembly includes a thrust spring 13 inserted into the fixing tube 11 . The thrust spring 13 is disposed between the top ball 12 and the bottom wall of the fixing tube 11 .

[0031] In this embodiment, a water inlet pipe 4 and a water outlet pipe 5 are respectively provided at the top end of the heat storage cylinder 2.

[0032] In this embodiment, a rectangular opening 16 is formed through the outer surface of one side of the filter box 8 . A collection box 17 is slidably mounted on the inner wall of the rectangular opening 16 , and a handle 18 is fixedly mounted on the outer surface of the collection box 17 .

[0033] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: the water inlet pipe 4 is connected to inject the external water source into the heat storage cylinder 2, and the high-temperature flue gas generated in the crucible 1 is introduced into the heat storage cylinder 2 through the exhaust pipe 3. Since the interior of the heat storage cylinder 2 is provided with a partition 6, the high-temperature flue gas can heat the water source in the heat storage cylinder 2 below the partition 6. The heated water source can be used in places where heat energy is required, avoiding the waste of heat energy in the high-temperature flue gas; as the high-temperature flue gas is continuously injected into the heat storage cylinder 2, the high-temperature flue gas will flow into the filter box 8 through the connecting pipe 7. At this time, the storage The water source in the heat cylinder 2 will generate a large amount of water vapor, so that the water vapor can enter the filter box 8 through the guide pipe 9, so that the water vapor humidifies the flue gas in the filter box 8, so that the dust particles in the flue gas fall into the collection box 17 for collection, so that the flue gas can be filtered to prevent the dust in the flue gas from entering the natural environment and causing pollution; by arranging the tapered tube 10 and the top bead 12 on the guide pipe 9, the flue gas in the filter box 8 cannot enter the heat storage cylinder 2, and only the water vapor in the heat storage cylinder 2 is allowed to enter the filter box 8, thereby preventing the dust in the flue gas from entering the heat storage cylinder 2 and causing pollution to the water source.

[0034] Example 2

[0035] Reference Figure 4A device for recovering and utilizing waste heat from graphitized high-temperature flue gas comprises a crucible 1, an exhaust pipe 3 is fixedly mounted on the top of the crucible 1, a heat storage cylinder 2 is fixedly mounted on the end of the exhaust pipe 3 away from the crucible 1, a partition 6 is fixedly mounted on the inner wall of the heat storage cylinder 2, the partition 6 is arranged above the exhaust pipe 3, a connecting pipe 7 is fixedly mounted on the outer surface of the heat storage cylinder 2 below the partition 6, a filtering mechanism is provided on the end of the connecting pipe 7 away from the heat storage cylinder 2, and a flow guide mechanism is provided on the outer surface of the heat storage cylinder 2.

[0036] In this embodiment, the filtering mechanism includes a filter box 8 connected to the connecting pipe 7. A baffle 15 is fixedly installed on the inner wall of the filter box 8 above the connecting pipe 7. A plurality of through holes 19 are evenly penetrated through the outer surface of the baffle 15. An air outlet pipe 14 is fixedly installed on the outer surface of the filter box 8 away from the connecting pipe 7.

[0037] In this embodiment, the flow guide mechanism includes a flow guide tube 9 fixedly mounted on the outer surface of the heat storage cylinder 2. The flow guide tube 9 is arranged near the top of the heat storage cylinder 2. The end of the flow guide tube 9 away from the heat storage cylinder 2 is fixedly mounted on the upper surface of the filter box 8, and the flow guide tube 9 is connected to the interior of the filter box 8. A flow stopping mechanism is provided on the outer surface of the flow guide tube 9.

[0038] In this embodiment, the flow stopping mechanism includes a fixed tube 11 fixedly installed on the guide tube 9, a conical tube 10 is fixedly installed on the top end of the fixed tube 11, a top bead 12 is provided inside the fixed tube 11, the top bead 12 is abutted against the inner wall of the conical tube 10, and a tightening component is provided inside the fixed tube 11.

[0039] In this embodiment, the pressing assembly includes a thrust spring 13 inserted into the fixing tube 11 . The thrust spring 13 is disposed between the top ball 12 and the bottom wall of the fixing tube 11 .

[0040] In this embodiment, a water inlet pipe 4 and a water outlet pipe 5 are respectively provided at the top end of the heat storage cylinder 2.

[0041] In this embodiment, a rectangular opening 16 is formed through the outer surface of one side of the filter box 8 . A collection box 17 is slidably mounted on the inner wall of the rectangular opening 16 , and a handle 18 is fixedly mounted on the outer surface of the collection box 17 .

[0042] In this embodiment, an activated carbon layer 20 is fixedly mounted on the inner wall of the filter box 8 close to the air outlet pipe 14 .

[0043] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: the water inlet pipe 4 is connected to inject the external water source into the heat storage cylinder 2, and the high-temperature flue gas generated in the crucible 1 is introduced into the heat storage cylinder 2 through the exhaust pipe 3. Since the interior of the heat storage cylinder 2 is provided with a partition 6, the high-temperature flue gas can heat the water source in the heat storage cylinder 2 below the partition 6. The heated water source can be used in various places where heat energy is required, avoiding the waste of heat energy in the high-temperature flue gas; as the high-temperature flue gas is continuously injected into the heat storage cylinder 2, the high-temperature flue gas will flow into the filter box 8 through the connecting pipe 7. At this time, the water source in the heat storage cylinder 2 will generate a large amount of water vapor, so that the water vapor can pass through the guide pipe 7 to filter the heat. The tube 9 enters the filter box 8, so that the water vapor humidifies the flue gas in the filter box 8, so that the dust particles in the flue gas fall into the collection box 17 for collection, so that the flue gas can be filtered to prevent the dust in the flue gas from entering the natural environment and causing pollution; by arranging the tapered tube 10 and the top bead 12 on the guide tube 9, the flue gas in the filter box 8 cannot enter the heat storage cylinder 2, and only the water vapor in the heat storage cylinder 2 is allowed to enter the filter box 8, thereby preventing the dust in the flue gas from entering the heat storage cylinder 2 and causing pollution to the water source; by arranging the activated carbon layer 20 on the inner wall of the filter box 8, the activated carbon layer 20 can further adsorb and filter the impurities in the flue gas, thereby improving the filtering effect of the flue gas.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A graphitization high-temperature flue gas waste heat recovery and utilization device, comprising a crucible (1), characterized in that: An exhaust pipe (3) is fixedly mounted on the top of the crucible (1), a heat storage cylinder (2) is fixedly mounted on the end of the exhaust pipe (3) away from the crucible (1), a partition (6) is fixedly mounted on the inner wall of the heat storage cylinder (2), the partition (6) is arranged above the exhaust pipe (3), a connecting pipe (7) is fixedly mounted on the outer surface of the heat storage cylinder (2) below the partition (6), a filtering mechanism is provided on the end of the connecting pipe (7) away from the heat storage cylinder (2), a flow guide mechanism is provided on the outer surface of the heat storage cylinder (2), the filtering mechanism includes a filter box (8) connected to the connecting pipe (7), a baffle (15) is fixedly mounted on the inner wall of the filter box (8) above the connecting pipe (7), a plurality of through holes (19) are evenly penetrated through the outer surface of the baffle (15), and the filter box (8) is far away. An air outlet pipe (14) is fixedly mounted on the outer surface of the side away from the connecting pipe (7), and the flow guiding mechanism comprises a flow guiding pipe (9) fixedly mounted on the outer surface of the heat storage cylinder (2), the flow guiding pipe (9) is arranged close to the top of the heat storage cylinder (2), and the end of the flow guiding pipe (9) away from the heat storage cylinder (2) is fixedly mounted on the upper surface of the filter box (8), and the flow guiding pipe (9) is connected to the interior of the filter box (8), and a flow stopping mechanism is provided on the outer surface of the flow guiding pipe (9), and the flow stopping mechanism comprises a fixed pipe (11) fixedly mounted on the flow guiding pipe (9), a conical pipe (10) is fixedly mounted on the top end of the fixed pipe (11), a top bead (12) is provided inside the fixed pipe (11), the top bead (12) abuts against the inner wall of the conical pipe (10), and a tightening component is provided inside the fixed pipe (11).

2. The device for recovering waste heat from graphitized high-temperature flue gas according to claim 1, characterized in that: The pressing assembly comprises a thrust spring (13) inserted into the interior of the fixing tube (11), and the thrust spring (13) is arranged between the top ball (12) and the bottom wall of the fixing tube (11).

3. The device for recovering waste heat from graphitized high-temperature flue gas according to claim 1, characterized in that: The top end of the heat storage cylinder (2) is respectively provided with a water inlet pipe (4) and a water outlet pipe (5).

4. The device for recovering waste heat from graphitized high-temperature flue gas according to claim 1, characterized in that: A rectangular opening (16) is provided through the outer surface of one side of the filter box (8), a collection box (17) is slidably mounted on the inner wall of the rectangular opening (16), and a handle (18) is fixedly mounted on the outer surface of the collection box (17).

5. The device for recovering waste heat from graphitized high-temperature flue gas according to claim 1, characterized in that: An activated carbon layer (20) is fixedly mounted on the inner wall of the filter box (8) close to the air outlet pipe (14).

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