CN220079126U - Flue gas waste heat utilization and purification treatment type continuous tempering furnace - Google Patents
Flue gas waste heat utilization and purification treatment type continuous tempering furnace Download PDFInfo
- Publication number
- CN220079126U CN220079126U CN202321439884.1U CN202321439884U CN220079126U CN 220079126 U CN220079126 U CN 220079126U CN 202321439884 U CN202321439884 U CN 202321439884U CN 220079126 U CN220079126 U CN 220079126U
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- flue gas
- pipe
- tempering furnace
- continuous tempering
- purifying
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- 238000005496 tempering Methods 0.000 title claims abstract description 79
- 239000003546 flue gas Substances 0.000 title claims abstract description 66
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000000746 purification Methods 0.000 title claims abstract description 34
- 239000002918 waste heat Substances 0.000 title claims abstract description 22
- 239000000779 smoke Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a flue gas waste heat utilization and purification treatment type continuous tempering furnace which comprises a continuous tempering furnace, a smoke exhaust pipe, a heat exchanger, a first fan, a flue gas purification pipe, a purification tank, an exhaust pipe, a second fan and a hot air pipe. The tail end of the furnace chamber of the continuous tempering furnace is connected with a shell side inlet of the heat exchanger through the smoke exhaust pipe, and the first fan is connected to the smoke exhaust pipe. One end of the flue gas purifying pipe is connected with a shell side outlet of the heat exchanger, the other end of the flue gas purifying pipe is inserted into the inner cavity of the purifying tank, and the exhaust pipe is communicated with the inner cavity of the purifying tank. The second fan is communicated with one end pipe shell of the heat exchanger through an air inlet pipe, one end of the hot air pipe is communicated with the other end pipe shell of the heat exchanger, and the other end of the hot air pipe is communicated with the furnace cavity head end of the continuous tempering furnace. The tempering furnace disclosed by the utility model can be used for purifying high-temperature flue gas generated in the tempering process and realizing hot air-assisted tempering by utilizing waste heat in the high-temperature flue gas.
Description
Technical Field
The utility model relates to the technical field of tempering furnaces, in particular to a flue gas waste heat utilization and purification treatment type continuous tempering furnace.
Background
Tempering furnace is used for tempering metal workpiece in air, tempering refers to a metal heat treatment process of reheating quenched metal workpiece to a proper temperature lower than lower critical temperature Ac1 (the starting temperature of pearlite to austenite transformation during heating), and cooling in air or water, oil medium after preserving heat for a period of time. The primary purpose of tempering is to reduce or eliminate internal stresses in quenched metal workpieces, or to reduce their hardness and strength, to increase their ductility or toughness.
The continuous tempering furnace is a tempering device commonly used in industry, and can convey a metal workpiece from an inlet to an outlet of the tempering furnace through a slowly-moving metal crawler belt, so that tempering treatment is just completed in the process, and the continuous tempering device has the advantages of being capable of continuously operating, high in efficiency and the like. In the tempering treatment process, lubricating oil and the like on the surface of the workpiece can form harmful smoke under the action of high temperature, so that the odor is bad, and the environment air can be influenced after the fume is discharged to a workshop.
Disclosure of Invention
In order to solve the problems, the utility model provides a flue gas waste heat utilization and purification treatment type continuous tempering furnace, which can be used for purifying high-temperature flue gas generated in a tempering process and simultaneously utilizing waste heat in the high-temperature flue gas to realize hot air assisted tempering. In order to achieve the above object, the technical scheme of the present utility model is as follows.
A smoke waste heat utilization and purification treatment type continuous tempering furnace comprises a continuous tempering furnace, a smoke exhaust pipe, a heat exchanger, a first fan, a smoke purification pipe, a purification tank, an exhaust pipe, a second fan and a hot air pipe; the tail end of the furnace chamber of the continuous tempering furnace is connected with a shell side inlet of the heat exchanger through the smoke exhaust pipe, and the first fan is connected to the smoke exhaust pipe and used for sucking smoke in the furnace chamber of the continuous tempering furnace; one end of the flue gas purifying pipe is connected with a shell side outlet of the heat exchanger, the other end of the flue gas purifying pipe is inserted into an inner cavity of the purifying tank, and the exhaust pipe is communicated with the inner cavity of the purifying tank and is used for discharging flue gas after purifying treatment; the second fan is communicated with one end pipe shell of the heat exchanger through an air inlet pipe, one end of the hot air pipe is communicated with the other end pipe shell of the heat exchanger, and the other end of the hot air pipe is communicated with the furnace cavity head end of the continuous tempering furnace.
Further, one end of the hot air pipe, which is positioned in the furnace chamber of the continuous tempering furnace, is horizontal, and the end port faces the tail end of the furnace chamber of the continuous tempering furnace.
Further, one end of the flue gas purifying pipe is positioned below the liquid level of the flue gas purifying liquid in the purifying tank.
Further, the flue gas purifying liquid comprises any one of water, alkali liquor and the like. Optionally, the alkali liquor comprises any one of sodium hydroxide solution, sodium carbonate solution and the like, and is mainly used for intercepting solid impurities and acid gases in the flue gas.
Further, a filter screen is arranged above the liquid level in the purifying tank so as to further intercept solid impurities in the flue gas.
Further, the lower part of the purification tank is a conical body, and the bottom of the purification tank is provided with an outlet for discharging the flue gas purification liquid, solid impurities and the like in the purification tank.
Further, a heater is arranged on the hot air pipe to further heat the inlet air after heat exchange and temperature rise, so that the inlet air reaches the temperature required by tempering, and hot air assisted tempering is realized.
The beneficial effects are that: compared with the prior art, the flue gas waste heat utilization and purification treatment type continuous tempering furnace can send generated high-temperature flue gas into the heat exchanger through the first fan, and meanwhile, the second fan sends external cold air into the heat exchanger, so that the cold air and the high-temperature flue gas exchange heat in the heat exchanger. After the high-temperature flue gas is converted into low-temperature flue gas, the low-temperature flue gas enters a purification tank, and harmful gas, smoke dust and other impurities in the low-temperature flue gas are absorbed and trapped by the purification liquid, so that the flue gas is purified. Meanwhile, cold air after heat exchange is converted into hot air and then enters the continuous tempering furnace from the furnace cavity head end of the continuous tempering furnace again, so that on one hand, flue gas generated in the continuous tempering furnace can be carried out more fully by utilizing the flowing process of the hot air, and on the other hand, after the hot air is heated by a heater to reach the temperature required by tempering, the hot air can be used as a heat source to realize hot air auxiliary tempering, and the energy consumption of the continuous tempering furnace is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
Fig. 1 is a schematic structural diagram of a flue gas waste heat utilization and purification treatment type continuous tempering furnace in an embodiment.
Fig. 2 is an enlarged view of a portion of a hot blast hose in the head end of a furnace chamber of a continuous tempering furnace according to an embodiment.
The marks in the figure: 1-continuous tempering furnace, 2-smoke exhaust pipe, 3-heat exchanger, 4-first fan, 5-flue gas purifying pipe, 6-purifying tank, 7-blast pipe, 8-second fan, 9-hot blast pipe, 10-filter screen, 11-heater.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
In the description of the present utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and do not limit the structure, but merely facilitate description of the present utility model, rather do not indicate or imply that the device or element being referred to needs to have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. The technical scheme of the utility model is further described with reference to the attached drawings and the embodiments.
Referring to fig. 1, an example of a flue gas waste heat utilization and purification treatment type continuous tempering furnace includes: the device comprises a continuous tempering furnace 1, a smoke exhaust pipe 2, a heat exchanger 3, a first fan 4, a smoke purifying pipe 5, a purifying tank 6, an exhaust pipe 7, a second fan 8 and a hot air pipe 9. The continuous tempering furnace 1 is horizontally arranged, the left end of the continuous tempering furnace 1 is a tail end, the right end of the continuous tempering furnace is a head end, a workpiece enters a furnace chamber from the head end of the continuous tempering furnace 1 under the conveying of a crawler belt, and the workpiece is output from the tail end after tempering treatment and is cooled to obtain a tempered workpiece.
The tail end of the furnace chamber of the continuous tempering furnace 1 is connected with a shell side inlet of the heat exchanger 3 through the smoke exhaust pipe 2, and the first fan 4 is connected to the smoke exhaust pipe 2 and used for sucking smoke in the furnace chamber of the continuous tempering furnace 1. One end of the flue gas purifying tube 5 is connected with a shell side outlet of the heat exchanger 3, the other end of the flue gas purifying tube 5 is inserted into the inner cavity of the purifying tank 6, and the exhaust pipe 7 is communicated with the inner cavity of the purifying tank 6 and is used for discharging the flue gas after the purifying treatment. When in use, one end of the flue gas purifying pipe 5 is positioned below the liquid level of the flue gas purifying liquid in the purifying tank 6. The flue gas purifying liquid comprises any one of water, alkali liquor (such as sodium hydroxide solution and sodium carbonate solution) and the like, and is mainly used for intercepting solid impurities and acid gases in flue gas. The lower part of the purifying tank 6 is a conical body, and the bottom of the purifying tank is provided with an outlet for periodically or aperiodically discharging the flue gas purifying liquid, solid impurities and the like in the purifying tank 6 so as to replace new flue gas purifying liquid.
The second fan 8 is communicated with one end pipe shell of the heat exchanger 3 through an air inlet pipe so as to send external cold air into the heat exchange pipe of the heat exchanger 3 and exchange heat with high-temperature flue gas entering the shell side of the heat exchanger 3. One end of the hot air pipe 9 is communicated with the other end pipe shell of the heat exchanger 3, the other end of the hot air pipe 9 is communicated with the furnace cavity head end of the continuous tempering furnace 1, and the cold air after heat exchange is converted into hot air and then enters the furnace cavity of the continuous tempering furnace 1. After heat exchange is completed, the high-temperature flue gas is converted into low-temperature flue gas and then enters the purification tank 6, and harmful gas, smoke dust and other impurities in the low-temperature flue gas are absorbed and trapped by the purification liquid, so that the flue gas is purified. Meanwhile, cold air after heat exchange is converted into hot air and then enters the continuous tempering furnace 1 from the furnace cavity head end of the continuous tempering furnace 1, so that on one hand, flue gas generated in the continuous tempering furnace 1 can be carried out more fully by utilizing the flowing process of the hot air.
Referring to fig. 2, in another embodiment, in the above-mentioned flue gas waste heat utilization and purification treatment type continuous tempering furnace, one end of the hot air pipe 9 located in the furnace chamber of the continuous tempering furnace 1 is horizontal, and the end port faces the furnace chamber tail end of the continuous tempering furnace 1, so as to guide hot air to the furnace chamber tail end of the continuous tempering furnace 1.
Referring to fig. 1, in another preferred embodiment, in the above-mentioned flue gas waste heat utilization and purification treatment type continuous tempering furnace, the heater 11 is disposed on the hot air pipe 9, so that after the hot air pipe is further heated to reach the temperature required for tempering after heat exchange and temperature rising, it can be used as a heat source to realize hot air assisted tempering, and the energy consumption of the continuous tempering furnace 1 is reduced.
Referring to fig. 1, in another embodiment, in the above-mentioned flue gas waste heat utilization and purification treatment type continuous tempering furnace, a filter screen 10 is disposed above the liquid level in the purification tank 6, so as to further intercept solid impurities in the flue gas, and improve the purification effect on the flue gas.
Finally, it should be noted that any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.
Claims (8)
1. A flue gas waste heat utilization and purification treatment type continuous tempering furnace is characterized in that: comprises a continuous tempering furnace, a smoke exhaust pipe, a heat exchanger, a first fan, a smoke purifying pipe, a purifying tank, an exhaust pipe, a second fan and a hot air pipe; the tail end of the furnace chamber of the continuous tempering furnace is connected with a shell side inlet of the heat exchanger through the smoke exhaust pipe, and the first fan is connected to the smoke exhaust pipe; one end of the flue gas purifying pipe is connected with a shell side outlet of the heat exchanger, the other end of the flue gas purifying pipe is inserted into the inner cavity of the purifying tank, and the exhaust pipe is communicated with the inner cavity of the purifying tank; the second fan is communicated with one end pipe shell of the heat exchanger through an air inlet pipe, one end of the hot air pipe is communicated with the other end pipe shell of the heat exchanger, and the other end of the hot air pipe is communicated with the furnace cavity head end of the continuous tempering furnace.
2. The flue gas waste heat utilization and purification treatment type continuous tempering furnace according to claim 1, wherein: one end of the hot air pipe, which is positioned in the furnace chamber of the continuous tempering furnace, is horizontal, and the port of the end faces the tail end of the furnace chamber of the continuous tempering furnace.
3. The flue gas waste heat utilization and purification treatment type continuous tempering furnace according to claim 1, wherein: one end of the flue gas purifying pipe is positioned below the liquid level of the flue gas purifying liquid in the purifying tank.
4. A flue gas waste heat utilization and purification treatment type continuous tempering furnace according to claim 3, wherein: the flue gas purifying liquid comprises any one of water and alkali liquor.
5. The flue gas waste heat utilization and purification treatment type continuous tempering furnace according to claim 4, wherein: the alkali liquor comprises any one of sodium hydroxide solution and sodium carbonate solution.
6. The flue gas waste heat utilization and purification treatment type continuous tempering furnace according to claim 1, wherein: a filter screen is arranged above the liquid level in the purifying tank.
7. The flue gas waste heat utilization and purification treatment type continuous tempering furnace according to any one of claims 1 to 6, wherein: the lower part of the purifying tank is a conical body, and the bottom of the purifying tank is provided with an outlet.
8. The flue gas waste heat utilization and purification treatment type continuous tempering furnace according to any one of claims 1 to 6, wherein: and a heater is arranged on the hot air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439884.1U CN220079126U (en) | 2023-06-07 | 2023-06-07 | Flue gas waste heat utilization and purification treatment type continuous tempering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439884.1U CN220079126U (en) | 2023-06-07 | 2023-06-07 | Flue gas waste heat utilization and purification treatment type continuous tempering furnace |
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| CN220079126U true CN220079126U (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321439884.1U Active CN220079126U (en) | 2023-06-07 | 2023-06-07 | Flue gas waste heat utilization and purification treatment type continuous tempering furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117660742A (en) * | 2023-11-30 | 2024-03-08 | 南通国盛机床部件有限公司 | Continuous destressing tempering furnace circulating device |
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2023
- 2023-06-07 CN CN202321439884.1U patent/CN220079126U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117660742A (en) * | 2023-11-30 | 2024-03-08 | 南通国盛机床部件有限公司 | Continuous destressing tempering furnace circulating device |
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