CN220380289U - Graphitizing furnace heat preservation cover heat recovery device - Google Patents
Graphitizing furnace heat preservation cover heat recovery device Download PDFInfo
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- CN220380289U CN220380289U CN202321924550.3U CN202321924550U CN220380289U CN 220380289 U CN220380289 U CN 220380289U CN 202321924550 U CN202321924550 U CN 202321924550U CN 220380289 U CN220380289 U CN 220380289U
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- heat exchange
- gas
- heat
- pipeline
- exchange pipeline
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- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 238000004321 preservation Methods 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 118
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003546 flue gas Substances 0.000 claims abstract description 49
- 238000005087 graphitization Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model belongs to the technical field of heat recovery, and particularly relates to a heat recovery device of a heat preservation cover of a graphitizing furnace, which comprises a gas collection cover covered on the top of the graphitizing furnace, wherein a heat preservation layer is arranged in the gas collection cover, a flue gas duct is arranged at the top of the gas collection cover, a gas collection port is arranged on the flue gas duct, one end of the flue gas duct is sealed, the other end of the flue gas duct is connected with a tail gas treatment system, flue gas is led into the tail gas treatment system along the flue gas duct through the gas collection port for treatment, the heat recovery device further comprises a heat exchange pipeline arranged in the gas collection cover, the input end of the heat exchange pipeline is provided with a water inlet valve, the output end of the heat exchange pipeline is provided with an upper heat exchange pipeline and a lower heat exchange pipeline, and the pipeline diameter of the lower heat exchange pipeline is larger than that of the upper heat exchange pipeline. The utility model realizes the rapid reduction of the upper surface temperature of the graphitization furnace, is beneficial to the low-temperature treatment of the flue gas, further improves the production efficiency and realizes the energy conservation and emission reduction.
Description
Technical Field
The utility model belongs to the technical field of heat recovery, and particularly relates to a heat recovery device for a heat preservation cover of a graphitization furnace.
Background
The graphitizing furnace is used as processing equipment for producing various graphite materials, and the original irregularly distributed carbon atoms are orderly arranged by high-temperature treatment of raw materials in the furnace, so that the graphitized carbon is converted into the graphite carbon with a three-dimensional regular ordered structure of graphite. Graphitization improves the volume density, electrical conductivity, thermal conductivity, corrosion resistance and machining performance of the product, and is a key procedure in the production process of the artificial graphite cathode.
The graphitization temperature is typically required to reach 3000 c, and as the graphitization temperature increases to approximately 2200 c, impurities in the graphitized material have been substantially eliminated. In this process, a large amount of inflammable and volatile gas is produced, which is converted into a more easily handled oxide form, such as SO 2 、NO x 、CO 2 And the like, and simultaneously, a large amount of heat is emitted.
In order to meet the environmental protection requirement and improve the production efficiency, it is necessary to intensively treat the gas and rapidly reduce the upper surface temperature of the furnace body.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides the heat recovery device of the heat preservation cover of the graphitizing furnace, which is provided with the heat exchange pipeline of the gas collection cover attached in the cover, so that the flue gas and heat generated by the combustion of the combustible gas generated in the graphitizing process are recovered in a sealing way, the heat generated by the combustion is recovered by the heat exchange pipeline, the generated flue gas is cooled to a low temperature and is sent to the tail gas treatment system for treatment through the gas collection pipe, the rapid reduction of the upper surface temperature of the graphitizing furnace is realized, the low-temperature treatment of the flue gas is facilitated, the production efficiency is further improved, and the energy conservation and the emission reduction are realized.
The utility model adopts the specific technical scheme that:
the utility model provides a graphitization stove heat preservation cover heat recovery unit, includes the gas collecting channel who covers in graphitization furnace roof, be provided with the heat preservation in the gas collecting channel, the gas collecting channel top is provided with the flue gas pipe, be provided with the gas collecting port on the flue gas pipe, flue gas pipe one end is sealed, and the flue gas pipe other end is connected with tail gas processing system, and the flue gas is handled in leading-in tail gas processing system along the flue gas pipe through the gas collecting port, still including setting up the heat transfer pipeline in the gas collecting channel, the input of heat transfer pipeline is provided with water inlet valve, the output of heat transfer pipeline is provided with out water valve, the heat transfer pipeline includes upper heat transfer pipeline and the lower floor heat transfer pipeline of upper and lower floor, the pipeline diameter of lower floor heat transfer pipeline is greater than the pipeline diameter of upper heat transfer pipeline.
The upper layer heat exchange pipeline and the lower layer heat exchange pipeline are respectively suspended in the gas collecting hood by means of spring connecting rods, the upper layer heat exchange pipeline and the lower layer heat exchange pipeline are arranged at intervals up and down, each spring connecting rod comprises a spring part and a rod part which are mutually connected, the spring parts of the spring connecting rods are fixedly connected with the top of the gas collecting hood, and the rod parts of the spring connecting rods are fixedly connected with the upper layer heat exchange pipeline or the lower layer heat exchange pipeline.
The lower surface of the lower heat exchange pipeline is 10-20cm away from the plane where the bottom of the gas collecting hood is located, and the side surface of the lower heat exchange pipeline is 30-40cm away from the side wall of the gas collecting hood.
The gas collecting port of the flue gas duct is provided with an adjusting plate, two groups of symmetrical L-shaped fixing frames are arranged on the flue gas duct and located on the upper side and the lower side of the gas collecting port, a horizontal adjusting track is formed between the two groups of symmetrical L-shaped fixing frames, the adjusting plate moves back and forth along the adjusting track, and the gas collecting port is closed or opened by means of the reciprocating movement of the adjusting plate.
The top of the gas collecting hood is arc-shaped.
The heat exchange pipeline further comprises an inner wall heat exchange pipe, and the inner wall heat exchange pipe is tightly fixed on the side wall of the gas collecting hood.
An air inlet penetrating through the side wall is formed in the side wall of the gas collecting hood, close to the bottom.
The gas collecting hoods are provided with a plurality of gas collecting hoods, one side of each gas collecting hood is provided with a fixed groove, the other side of each gas collecting hood is provided with a fixed protrusion matched with the fixed groove, the plurality of gas collecting hoods are sequentially buckled and communicated with the fixed protrusion through the fixed grooves, and the plurality of gas collecting hoods which are sequentially buckled and communicated form a gas collecting hood group with adjustable length.
The beneficial effects of the utility model are as follows:
the utility model provides a heat recovery device of a heat preservation cover of a graphitizing furnace, which is characterized in that a heat exchange pipeline is arranged in a gas collection cover to carry out airtight recovery on the heat generated by combustion of combustible gas generated in the graphitizing process, and the generated flue gas is cooled to low temperature and is sent to a tail gas treatment system for treatment through the gas collection pipe, so that the rapid reduction of the upper surface temperature of the graphitizing furnace is realized, the low-temperature treatment of the flue gas is facilitated, the production efficiency is further improved, and the energy conservation and the emission reduction are realized.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a coiled heat exchange line in the shape of a Chinese character 'Hui';
FIG. 3 is a "s" type heat exchange tube coiling intent;
in the drawing, 1, a gas collecting hood, 2, a water inlet valve, 3, a water outlet valve, 4, a flue gas duct, 5, a gas collecting port, 6, an upper heat exchange pipeline, 7, a lower heat exchange pipeline, 8, a spring connecting rod, 9, an adjusting plate, 10, an L-shaped fixing frame, 11, an inner wall heat exchange pipe, 12 and an air inlet.
Detailed Description
The utility model is further described with reference to the accompanying drawings and specific examples:
the utility model provides a graphitization stove heat preservation cover heat recovery device, includes the gas collecting channel 1 of cover in graphitization furnace roof, be provided with the heat preservation in the gas collecting channel 1, gas collecting channel 1 top is provided with flue gas pipe 4, be provided with gas collecting port 5 on the flue gas pipe 4, flue gas pipe 4 one end is sealed, and the flue gas pipe 4 other end is connected with tail gas processing system, and the flue gas is handled in leading-in tail gas processing system along flue gas pipe 4 through gas collecting port 5, still including setting up the heat transfer pipeline in gas collecting channel 1, the input of heat transfer pipeline is provided with water inlet valve 2, the output of heat transfer pipeline is provided with out water valve 3, the heat transfer pipeline includes upper heat transfer pipeline 6 and the lower floor heat transfer pipeline 7 of upper and lower floor, the pipeline diameter of lower floor heat transfer pipeline 7 is greater than the pipeline diameter of upper heat transfer pipeline 6.
In embodiment 1, as shown in fig. 1-2, since a large amount of volatile gas and a large amount of heat are generated during graphitization, it is necessary to intensively process the gas and rapidly lower the upper surface temperature of the furnace body and recover a part of the heat for the purpose of environmental protection and recycling of energy. According to the utility model, the gas collecting hood 1 with the heat preservation layer is used for covering the graphitized furnace top, and the heat exchange pipeline for cooling and recovering heat and the flue gas guide pipe 4 for concentrating flue gas are arranged in the gas collecting hood 1, so that the heat generated in the graphitizing process is recovered in a sealing way, the low-temperature treatment of the flue gas is facilitated, the production efficiency is further improved, and the energy conservation and emission reduction are realized.
The temperature in the gas-collecting channel 1 is greatly increased during graphitization, the water inlet valve 2 and the water outlet valve 3 are opened, the heat exchange medium in the pipe is water, the water passes through the high-temperature gas-collecting channel 1 along the heat exchange pipeline, the temperature of the water can be rapidly increased in the process to absorb a large amount of heat, then the heat carried by the water can flow into a factory water circulation system through the water outlet valve 3 for other production heating or heating purposes, and the like, the design of the double-layer heat exchange pipeline can improve the recovery rate of the heat in the gas-collecting channel 1, and the graphitization furnace is positioned below the gas-collecting channel 1, so that the temperature in the gas-collecting channel 1 is higher than the temperature in the lower part, the diameter of the lower-layer heat exchange pipeline 7 is thicker, the heat exchange medium flow is increased, the heat exchange medium is prevented from boiling, the heat waste is avoided, meanwhile, high-efficiency heat exchange is realized, the lower-layer heat exchange pipeline 7 can basically absorb the residual heat of the part due to the thinner diameter of the upper-layer heat exchange pipeline 6, the lower-layer heat exchange medium can reduce the heat recovery rate, and the cost is reduced on the premise of improving the heat through the design of the double-layer heat exchange pipeline. In addition, the upper layer heat exchange pipeline 6 and the lower layer heat exchange pipeline 7 are coiled in a mode of being shaped like a Chinese character 'Hui', so that the coiling area of the upper layer heat exchange pipeline 6 and the lower layer heat exchange pipeline 7 in a unit space is increased, and a heat exchange medium can pass through a longer path and time in the gas collecting hood 1 so as to absorb more heat.
The tail end of the flue gas duct 4 is provided with an exhaust fan, the flue gas enters the flue gas duct 4 along the gas collecting port 5 under the action of air suction of the exhaust fan or the negative pressure of the tail gas treatment system, and enters the tail gas treatment system along the flue gas duct 4 for treatment, so that concentrated treatment gas is realized.
Further, as shown in fig. 1, the upper heat exchange pipeline 6 and the lower heat exchange pipeline 7 are respectively suspended in the gas collecting hood 1 by means of the spring connecting rod 8, the upper heat exchange pipeline 6 and the lower heat exchange pipeline 7 are arranged at intervals up and down, the spring connecting rod 8 comprises a spring part and a rod part which are connected with each other, the spring part of the spring connecting rod 8 is fixedly connected with the top of the gas collecting hood 1, the rod part of the spring connecting rod 8 is fixedly connected with the upper heat exchange pipeline 6 or the lower heat exchange pipeline 7, the temperature in the gas collecting hood reaches several hundred ℃ due to higher graphitized temperature, although the heat exchange pipeline is made of high temperature resistant and high pressure resistant metal, a certain amount of deformation can still occur in the heat exchange pipeline at high temperature due to thermal expansion and contraction, if the heat exchange pipeline adopts a hard connection mode, the deformation can cause micro-movement of the heat exchange pipeline, and possibly cause breakage of the heat exchange pipeline, so that the heat exchange pipeline is broken, even if the heat exchange pipeline generates a certain amount of deformation, the spring connecting rod 8 with the spring is connected with the heat exchange pipeline, the expansion and contraction of the heat exchange pipeline is prevented from being broken, and the stability of the heat exchange pipeline is improved, and the safety is improved.
Further, as shown in fig. 1, the lower surface of the lower heat exchange pipeline 7 is 10-20cm away from the plane where the bottom of the gas collecting hood 1 is located, the side surface of the lower heat exchange pipeline 7 is 30-40cm away from the side wall of the gas collecting hood 1, and by enabling the lower heat exchange pipeline 7 to have a certain distance from the bottom and the side wall of the gas collecting hood 1, the lower heat exchange pipeline 7 is prevented from being directly contacted with the graphitization furnace and the gas collecting hood 1, the lower heat exchange pipeline is prevented from being buried in heat insulation sand at the top of the furnace, and the heat exchange efficiency is prevented from being reduced.
Further, as shown in fig. 1, the gas collecting port 5 of the flue gas duct 4 is provided with an adjusting plate 9, two groups of symmetrical L-shaped fixing frames 10 are arranged on the flue gas duct 4 and located on the upper side and the lower side of the gas collecting port 5, a horizontal adjusting track is formed between the two groups of symmetrical L-shaped fixing frames 10, the adjusting plate 9 moves back and forth along the adjusting track, the gas collecting port 5 is closed or opened by means of the back and forth movement of the adjusting plate 9, and the gas inflow of the flue gas entering the flue gas duct 4 is controlled by adjusting the position of the adjusting plate 9, so that the rising speed of the flue gas is controlled, the rising process of the flue gas is avoided, and the heat carried by the high-temperature flue gas cannot be fully absorbed by a heat exchange medium in a heat exchange pipeline.
Further, as shown in fig. 1, the top of the gas collecting hood 1 is arc-shaped, the included angle between the arc tangent line and the vertical surface at the connection position of the arc top and the side wall of the gas collecting hood 1 is 135 °, and as the gas collecting hood 1 needs to be in a high-temperature environment for a long time, the gas collecting hood 1 is easy to deform, and compared with the right-angle plane top, the arc-shaped top is difficult to break at the connection position between the top and the side wall when being deformed. And meanwhile, the top of the gas collecting hood 1 is also provided with a hanging ring, so that the gas collecting hood 1 is convenient to hoist.
Further, as shown in fig. 1, the heat exchange pipeline further includes an inner wall heat exchange tube 11, the inner wall heat exchange tube 11 is tightly attached to the side wall of the gas collecting hood 1, and the inner wall of the gas collecting hood 1 is provided with a thinner inner wall heat exchange tube 11, so that residual heat in the gas collecting hood 1 can be further absorbed, and the heat recovery rate is improved.
Further, as shown in fig. 1, an air inlet hole 12 penetrating through the side wall is arranged at the position, close to the bottom, of the side wall of the gas collecting hood 1.
Further, the gas collecting hoods 1 are provided with a plurality of gas collecting hoods, one side of the gas collecting hoods 1 is provided with a fixing groove, the other side of the gas collecting hoods 1 is provided with a fixing protrusion matched with the fixing groove, the gas collecting hoods 1 are sequentially buckled and mutually communicated by means of the fixing groove, the gas collecting hoods 1 which are sequentially buckled and communicated are formed into a gas collecting hood group with adjustable length, the gas collecting hood group is formed by a plurality of independent gas collecting hood 1 units, and the gas collecting hood group can be matched according to the actual length of the graphitization furnace so as to be suitable for the graphitization furnaces with different specifications, and the applicability of the gas collecting hood is improved.
The difference between the embodiment 2 and the embodiment 1 is that the heat exchange pipeline in the embodiment 2 is in an s-shaped coiling mode, as shown in fig. 3, the coiling mode avoids the right angle bending at the corner of the heat exchange pipeline, and the curved corner of the heat exchange pipeline in the embodiment is in an arc-shaped bending because the heat exchange pipeline is easy to deform in a high-temperature environment for a long time, compared with the right angle bending, when the heat exchange pipeline deforms, the arc-shaped bending is not easy to crack, and in addition, when the heat exchange pipeline is actually coiled, the heat exchange pipeline can be crossed and coiled by the 'back' shape and the's' -shaped bending mode according to practical conditions.
Claims (8)
1. The utility model provides a graphitization stove heat preservation cover heat recovery device, includes cover in gas collecting channel (1) of graphitization furnace roof, be provided with the heat preservation in gas collecting channel (1), gas collecting channel (1) top is provided with flue gas pipe (4), be provided with gas collecting port (5) on flue gas pipe (4), flue gas pipe (4) one end is sealed, and flue gas pipe (4) other end is connected with tail gas treatment system, and flue gas is handled in leading-in tail gas treatment system along flue gas pipe (4) through gas collecting port (5), its characterized in that still includes the heat transfer pipeline that sets up in gas collecting channel (1), the input of heat transfer pipeline is provided with water inlet valve (2), the output of heat transfer pipeline is provided with out water valve (3), the heat transfer pipeline includes upper heat transfer pipeline (6) and lower floor's heat transfer pipeline (7), the pipeline diameter of lower floor's heat transfer pipeline (7) is greater than the pipeline diameter of upper heat transfer pipeline (6).
2. The graphitizing furnace heat preservation cover heat recovery device according to claim 1, wherein the upper layer heat exchange pipeline (6) and the lower layer heat exchange pipeline (7) are respectively suspended in the gas collection cover (1) by means of a spring connecting rod (8), the upper layer heat exchange pipeline (6) and the lower layer heat exchange pipeline (7) are arranged at intervals up and down, the spring connecting rod (8) comprises a spring part and a rod part which are connected with each other, the spring part of the spring connecting rod (8) is fixedly connected with the top of the gas collection cover (1), and the rod part of the spring connecting rod (8) is fixedly connected with the upper layer heat exchange pipeline (6) or the lower layer heat exchange pipeline (7).
3. The graphitizing furnace heat preservation cover heat recovery device according to claim 1 is characterized in that the lower surface of the lower heat exchange pipeline (7) is 10-20cm away from the plane where the bottom of the gas collection cover (1) is located, and the side surface of the lower heat exchange pipeline (7) is 30-40cm away from the side wall of the gas collection cover (1).
4. The graphitizing furnace heat preservation cover heat recovery device according to claim 1, wherein an adjusting plate (9) is arranged at a gas collecting port (5) of the flue gas guide pipe (4), two groups of symmetrical L-shaped fixing frames (10) are arranged on the flue gas guide pipe (4) and located on the upper side and the lower side of the gas collecting port (5), a horizontal adjusting track is formed between the two groups of symmetrical L-shaped fixing frames (10), the adjusting plate (9) moves back and forth along the adjusting track, and the gas collecting port (5) is closed or opened by means of the back and forth movement of the adjusting plate (9).
5. The graphitizing furnace heat preservation cover heat recovery device according to claim 1, wherein the top of the gas collection cover (1) is arc-shaped.
6. The graphitizing furnace heat preservation cover heat recovery device according to claim 1, wherein the heat exchange pipeline further comprises an inner wall heat exchange pipe (11), and the inner wall heat exchange pipe (11) is fixed close to the side wall of the gas collection cover (1).
7. The graphitizing furnace heat preservation cover heat recovery device according to claim 1, wherein an air inlet hole (12) penetrating through the side wall is arranged at the side wall of the gas collection cover (1) close to the bottom.
8. The graphitizing furnace heat preservation cover heat recovery device according to claim 1, wherein the plurality of gas collection covers (1) are arranged, a fixing groove is formed in one side of the gas collection cover (1), fixing protrusions matched with the fixing groove are arranged on the other side of the gas collection cover (1), the plurality of gas collection covers (1) are sequentially buckled and communicated with the fixing protrusions through the fixing groove, and the plurality of gas collection covers (1) which are sequentially buckled and communicated form a gas collection cover group with adjustable length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321924550.3U CN220380289U (en) | 2023-07-21 | 2023-07-21 | Graphitizing furnace heat preservation cover heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321924550.3U CN220380289U (en) | 2023-07-21 | 2023-07-21 | Graphitizing furnace heat preservation cover heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220380289U true CN220380289U (en) | 2024-01-23 |
Family
ID=89569258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321924550.3U Active CN220380289U (en) | 2023-07-21 | 2023-07-21 | Graphitizing furnace heat preservation cover heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220380289U (en) |
-
2023
- 2023-07-21 CN CN202321924550.3U patent/CN220380289U/en active Active
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