CN216011794U - Flue gas recycling energy-saving device - Google Patents
Flue gas recycling energy-saving device Download PDFInfo
- Publication number
- CN216011794U CN216011794U CN202122186342.5U CN202122186342U CN216011794U CN 216011794 U CN216011794 U CN 216011794U CN 202122186342 U CN202122186342 U CN 202122186342U CN 216011794 U CN216011794 U CN 216011794U
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- CN
- China
- Prior art keywords
- flue gas
- preheater
- strip steel
- preheater shell
- saving device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003546 flue gas Substances 0.000 title claims abstract description 78
- 238000004064 recycling Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 238000000137 annealing Methods 0.000 claims abstract description 34
- 239000000779 smoke Substances 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 23
- 239000002918 waste heat Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- -1 this Chemical compound 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a flue gas recycling and energy-saving device, which comprises a preheater shell, an annealing furnace, a heat exchanger, an air blower, a smoke exhaust fan and a chimney, wherein the upper surface of the preheater shell is provided with a flue gas outflow port in a penetrating way, the left side surface of the preheater shell is provided with a flue gas inflow port, the inside of the preheater shell is fixedly connected with a spray pipe, the surface of the spray pipe is provided with a spray seam, one end surface of the preheater shell is provided with a strip steel inlet, the other end surface of the preheater shell is provided with a strip steel outlet, and the flue gas at about 200 ℃ after heat exchange is used for preheating strip steel, so that the waste heat of the flue gas at 200 ℃ is effectively utilized, the temperature of the strip steel entering the annealing furnace is also improved, the energy consumption of the strip steel heated by the annealing furnace is naturally reduced, the economic benefit is improved, and the problem that the flue gas is diluted by cold air of the smoke exhaust fan in the prior art to reach the smoke exhaust temperature and then is discharged out of a factory building is effectively avoided, resulting in the problem of energy waste in the production process.
Description
Technical Field
The utility model belongs to the technical field of economizer, concretely relates to flue gas recovery recycles economizer.
Background
High-temperature flue gas exhausted from various metallurgical furnaces usually takes away 20-50% of heat supply of the furnaces. The flow directions of the metallurgical furnace flue gas and the preheated medium are opposite, the waste heat of the flue gas can be fully utilized to reach higher preheating temperature, and the wall of the metallurgical furnace is required to be made of heat-resistant materials.
In the existing flue gas waste heat utilization technology, the heat exchange capacity of a heat exchanger is limited by factors such as size, cost and the like, after flue gas is subjected to heat exchange through the heat exchanger, the temperature of the flue gas at the outlet of the heat exchanger is about 200 ℃, meanwhile, the heat exchange efficiency of the flue gas at about 200 ℃ is very limited, and the flue gas is not suitable for heat exchange through the heat exchanger for waste heat utilization, so that the flue gas is discharged out of a factory only after being diluted by a smoke exhaust fan with cold air to reach the smoke exhaust temperature, and energy waste in the production process is caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a flue gas recovery and recycle economizer to outside the factory building of discharging after the solution with smoke exhaust fan that provides mixes cold wind and dilutes and reach smoke exhaust temperature in the above-mentioned background art, lead to the extravagant problem of the energy in the production process.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flue gas is retrieved and is recycled economizer, includes preheater casing, annealing stove, heat exchanger, air-blower, exhaust fan and chimney, the upper surface of preheater casing runs through and has seted up flue gas outflow mouth, the left side surface of preheater casing is provided with flue gas inflow mouth, the inside fixedly connected with spray tube of preheater casing, the surface of spray tube is provided with the spout seam, belted steel entry has been seted up on the one end surface of preheater casing, the belted steel export has been seted up on the other end surface of preheater casing.
Preferably, one end of the preheater shell is fixedly connected with an annealing furnace through a strip steel outlet.
Preferably, the upper end of the preheater shell is connected to one end of the smoke exhaust fan through a smoke outflow port.
Preferably, the other end of the smoke exhaust fan is connected with the chimney.
Preferably, one end of the preheater housing is connected to one end of the blower through the flue gas outlet.
Preferably, the other end of the blower and one end of the heat exchanger are connected to each other.
Preferably, the other end of the heat exchanger and one end of the annealing furnace are connected to each other.
Compared with the prior art, the utility model provides a flue gas is retrieved and is recycled economizer possesses following beneficial effect:
the utility model discloses a flue gas about 200 ℃ after the heat transfer is used for preheating belted steel, has effectively utilized the waste heat of 200 ℃ flue gas like this, has also improved the temperature that belted steel got into the annealing stove simultaneously, has reduced the energy consumption of annealing stove heating belted steel naturally, has improved economic benefits, and outside the effectual fume extractor that has avoided mixing cold wind with among the prior art and diluting and reaching the factory building of discharging fume behind the exhaust temperature, leads to the extravagant problem of the energy in the production process.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:
FIG. 1 is a front view of a preheater in the flue gas recycling energy-saving device of the present invention;
FIG. 2 is a left side view of a preheater in the flue gas recycling energy-saving device provided by the present invention;
FIG. 3 is a right side view of a preheater in the flue gas recycling energy-saving device provided by the present invention;
FIG. 4 is a top view of a preheater in the flue gas recycling energy-saving device provided by the present invention;
FIG. 5 is a schematic view of the overall operation of the flue gas recycling energy-saving device provided by the present invention;
in the figure: 1. a flue gas inlet; 2. a flue gas outlet; 3. a nozzle; 4. spraying a seam; 5. a preheater housing; 6. a strip steel inlet; 7. a strip steel outlet; 8. an annealing furnace; 9. a heat exchanger; 10. a blower; 11. a smoke exhaust fan; 12. and (4) a chimney.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: an energy-saving device for recycling flue gas comprises a preheater shell 5, an annealing furnace 8, a heat exchanger 9, an air blower 10, a smoke exhaust fan 11 and a chimney 12, wherein a flue gas outflow port 2 is arranged on the upper surface of the preheater shell 5 in a penetrating way, a flue gas inflow port 1 is arranged on the left side surface of the preheater shell 5, a spray pipe 3 is fixedly connected inside the preheater shell 5, a spray seam 4 is arranged on the surface of the spray pipe 3, a strip steel inlet 6 is arranged on one end surface of the preheater shell 5, and a strip steel outlet 7 is arranged on the other end surface of the preheater shell 5, the utility model uses the flue gas with the temperature of about 200 ℃ after heat exchange for preheating the strip steel, thereby effectively utilizing the waste heat of the flue gas with the temperature of 200 ℃ and simultaneously improving the temperature of the strip steel entering the annealing furnace 8, naturally reducing the energy consumption of the strip steel heated by the annealing furnace 8, improving the economic benefit, and effectively avoiding the problem that the flue gas is discharged out of a factory building after being diluted by the smoke exhaust fan 11 with cold air to reach the smoke exhaust temperature in the prior art, resulting in the problem of energy waste in the production process.
In the utility model, preferably, one end of the preheater shell 5 is fixedly connected with an annealing furnace 8 through a strip steel outlet 7.
The utility model discloses in, preferred, the one end at smoke exhaust fan 11 is passed through flue gas outflow port 2 in the upper end of pre-heater casing 5.
The utility model discloses in, preferred, the other end and the chimney 12 interconnect of exhaust fan 11.
The utility model discloses in, preferred, the one end interconnect of flue gas outflow port 2 and air-blower 10 is passed through to the one end of pre-heater casing 5.
In the present invention, preferably, the other end of the blower 10 and one end of the heat exchanger 9 are connected to each other.
The utility model discloses in, it is preferred, the other end of heat exchanger 9 and the one end interconnect of annealing stove 8, will pass through the belted steel preheater before 8 annealing stove through the flue gas about 200 ℃ behind the heat exchanger 9 heat transfer of air-blower 10, the flue gas passes through the upper and lower surface of spray tube 3 jetting in the preheater casing 5 to belted steel, play the effect of preheating to the belted steel, then the flue gas behind the preheating belted steel is arranged outside the factory building in chimney 12 is taken out to the gas vent on through preheater casing 5, the waste heat of 200 ℃ flue gas has just so effectively been utilized, the temperature that belted steel got into the annealing stove has also been improved simultaneously, the production energy consumption of annealing stove heating belted steel has been reduced naturally, economic benefits has been improved.
Example one
An energy-saving device for recycling flue gas comprises a preheater shell 5, an annealing furnace 8, a heat exchanger 9, an air blower 10, a smoke exhaust fan 11 and a chimney 12, wherein a flue gas outflow port 2 is arranged on the upper surface of the preheater shell 5 in a penetrating way, a flue gas inflow port 1 is arranged on the left side surface of the preheater shell 5, a spray pipe 3 is fixedly connected inside the preheater shell 5, a spray seam 4 is arranged on the surface of the spray pipe 3, a strip steel inlet 6 is arranged on one end surface of the preheater shell 5, and a strip steel outlet 7 is arranged on the other end surface of the preheater shell 5, the utility model uses the flue gas with the temperature of about 200 ℃ after heat exchange for preheating the strip steel, thereby effectively utilizing the waste heat of the flue gas with the temperature of 200 ℃ and simultaneously improving the temperature of the strip steel entering the annealing furnace 8, naturally reducing the energy consumption of the strip steel heated by the annealing furnace 8, improving the economic benefit, and effectively avoiding the problem that the flue gas is discharged out of a factory building after being diluted by the smoke exhaust fan 11 with cold air to reach the smoke exhaust temperature in the prior art, resulting in the problem of energy waste in the production process.
Example two
An energy-saving device for recycling flue gas comprises a preheater shell 5, an annealing furnace 8, a heat exchanger 9, an air blower 10, a smoke exhaust fan 11 and a chimney 12, wherein a flue gas outflow port 2 is arranged on the upper surface of the preheater shell 5 in a penetrating way, a flue gas inflow port 1 is arranged on the left side surface of the preheater shell 5, a spray pipe 3 is fixedly connected inside the preheater shell 5, a spray seam 4 is arranged on the surface of the spray pipe 3, a strip steel inlet 6 is arranged on one end surface of the preheater shell 5, and a strip steel outlet 7 is arranged on the other end surface of the preheater shell 5, the utility model uses the flue gas with the temperature of about 200 ℃ after heat exchange for preheating the strip steel, thereby effectively utilizing the waste heat of the flue gas with the temperature of 200 ℃ and simultaneously improving the temperature of the strip steel entering the annealing furnace 8, naturally reducing the energy consumption of the strip steel heated by the annealing furnace 8, improving the economic benefit, and effectively avoiding the problem that the flue gas is discharged out of a factory building after being diluted by the smoke exhaust fan 11 with cold air to reach the smoke exhaust temperature in the prior art, resulting in the problem of energy waste in the production process.
One end of the preheater shell 5 is fixedly connected with an annealing furnace 8 through a strip steel outlet 7.
The upper end of the preheater shell 5 is connected with one end of a smoke exhaust fan 11 through a smoke outflow port 2.
The other end of the smoke exhaust fan 11 and the chimney 12 are connected with each other.
One end of the preheater housing 5 is connected to each other through the flue gas outflow port 2 and one end of the blower 10.
The other end of the blower 10 and one end of the heat exchanger 9 are connected to each other.
The other end of the heat exchanger 9 and one end of the annealing furnace 8 are connected with each other, the flue gas of about 200 ℃ after heat exchange of the heat exchanger 9 is led into the strip steel preheater in front of the annealing furnace 8 through the blower 10, the flue gas is sprayed to the upper and lower surfaces of the strip steel through the spray pipe 3 in the preheater shell 5, the effect of preheating the strip steel is achieved, then the flue gas after preheating the strip steel is pumped into a chimney 12 through an exhaust port on the preheater shell 5 and discharged out of a factory building through the exhaust fan 11, thus effectively utilizing the waste heat of the flue gas of 200 ℃, simultaneously improving the temperature of the strip steel entering the annealing furnace, naturally reducing the production energy consumption of heating the strip steel by the annealing furnace, and improving the economic benefit.
The utility model discloses a theory of operation and use flow: when in use, the spray pipe 3 is fixed in the preheater shell 5, one end of the spray pipe 3 connected with the flue gas inlet 1 is open and can be used for air inlet, the other end is closed, the inflowing flue gas can only be sprayed into the preheater shell 5 through the spray seam 4 on the spray pipe 3, the opening of the preheater shell 5 is only provided with a flue gas outlet on the top of the shell except for a strip steel inlet and outlet, then the flue gas at about 200 ℃ after heat exchange by the heat exchanger 9 is led into the strip steel preheater in front of the annealing furnace 8 through the air blower 10, the flue gas is sprayed to the upper and lower surfaces of the strip steel through the spray pipe 3 in the preheater shell 5 to play a role in preheating the strip steel, then the flue gas after preheating the strip steel is pumped into the chimney 12 through the exhaust port on the preheater shell 5 to be discharged out of a factory building, thus effectively utilizing the waste heat of the flue gas at 200 ℃, simultaneously improving the temperature of the strip steel entering the annealing furnace and naturally reducing the production energy consumption of the annealing furnace, the economic benefit is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a flue gas is retrieved and is recycled economizer, includes preheater casing (5), annealing stove (8), heat exchanger (9), air-blower (10), smoke exhaust fan (11) and chimney (12), its characterized in that: the upper surface of preheater casing (5) runs through and has seted up flue gas outflowing port (2), the left side surface of preheater casing (5) is provided with flue gas influent stream mouth (1), inside fixedly connected with spray tube (3) of preheater casing (5), the surface of spray tube (3) is provided with spout seam (4), belted steel entry (6) have been seted up on the one end surface of preheater casing (5), belted steel export (7) have been seted up on the other end surface of preheater casing (5).
2. The flue gas recycling energy-saving device according to claim 1, characterized in that: one end of the preheater shell (5) is fixedly connected with an annealing furnace (8) through a strip steel outlet (7).
3. The flue gas recycling energy-saving device according to claim 1, characterized in that: the upper end of the preheater shell (5) is connected with one end of a smoke exhaust fan (11) through a smoke outflow port (2).
4. The flue gas recycling energy-saving device according to claim 1, characterized in that: the other end of the smoke exhaust fan (11) is connected with the chimney (12).
5. The flue gas recycling energy-saving device according to claim 1, characterized in that: one end of the preheater shell (5) is connected with one end of the air blower (10) through the smoke outflow port (2).
6. The flue gas recycling energy-saving device according to claim 1, characterized in that: the other end of the blower (10) and one end of the heat exchanger (9) are connected with each other.
7. The flue gas recycling energy-saving device according to claim 1, characterized in that: the other end of the heat exchanger (9) is connected with one end of the annealing furnace (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122186342.5U CN216011794U (en) | 2021-09-10 | 2021-09-10 | Flue gas recycling energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122186342.5U CN216011794U (en) | 2021-09-10 | 2021-09-10 | Flue gas recycling energy-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216011794U true CN216011794U (en) | 2022-03-11 |
Family
ID=80531252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122186342.5U Expired - Fee Related CN216011794U (en) | 2021-09-10 | 2021-09-10 | Flue gas recycling energy-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216011794U (en) |
-
2021
- 2021-09-10 CN CN202122186342.5U patent/CN216011794U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |