CN220453620U - Steel slag waste heat utilization system - Google Patents
Steel slag waste heat utilization system Download PDFInfo
- Publication number
- CN220453620U CN220453620U CN202322020106.5U CN202322020106U CN220453620U CN 220453620 U CN220453620 U CN 220453620U CN 202322020106 U CN202322020106 U CN 202322020106U CN 220453620 U CN220453620 U CN 220453620U
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- steel slag
- air
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- pressure boiler
- double
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- 239000002893 slag Substances 0.000 title claims abstract description 63
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003546 flue gas Substances 0.000 abstract description 17
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a steel slag waste heat utilization system which comprises a pouring tank, a steel slag air cooling bed, a double-pressure boiler, an induced draft fan and a chimney, wherein a feed inlet of the steel slag air cooling bed is connected with the pouring tank, an air inlet of the double-pressure boiler is communicated with an air outlet of the steel slag air cooling bed, an air inlet of the induced draft fan is communicated with an air outlet of the double-pressure boiler, and an air outlet of the induced draft fan is communicated with the chimney. The utility model can better cool the steel slag, so that the flue gas with different temperatures generated during cooling the steel slag can be effectively utilized, the utility model is suitable for different working condition requirements, the flue gas temperature is reduced, and the heat recovery efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of steel slag waste heat utilization, in particular to a steel slag waste heat utilization system.
Background
The degree of recycling of the steel slag is mainly determined by the steel slag treatment process, and the physical and chemical properties of the treated steel slag can be greatly influenced by different treatment processes, wherein the temperature of the steel slag is about 300-1500 ℃. At present, the steel slag recycling treatment process in China and abroad is diversified due to the differences of steel making process and equipment, slag making system, steel slag performance and utilization ways, and the main methods include a natural weathering method, a hot splashing process, a disc splashing treatment process, a water quenching process, a wind crushing and granulating treatment process, a steel slag self-heating stewing process, a BSSF (roller method) treatment process, a steel slag rolling crushing-waste heat pressure hot disintegrating technology and the like. In the treatment process, waste heat resources of the steel slag are difficult to fully utilize in various treatment processes of the steel slag, so that a large amount of heat is wasted.
Disclosure of Invention
The utility model aims to provide a steel slag waste heat utilization system for solving the problems mentioned in the background art.
In order to solve the technical problems, the utility model provides a steel slag waste heat utilization system which comprises a pouring tank, a steel slag air cooling bed, a double-pressure boiler, an induced draft fan and a chimney, wherein a feed inlet of the steel slag air cooling bed is connected with the pouring tank, an air inlet of the double-pressure boiler is communicated with an air outlet of the steel slag air cooling bed, an air inlet of the induced draft fan is communicated with an air outlet of the double-pressure boiler, and an air outlet of the induced draft fan is communicated with the chimney.
Further, the steel slag cooling device further comprises a crusher, wherein a feeding hole of the crusher is connected with the pouring tank, and a discharging hole of the crusher is connected with a feeding hole of the steel slag cooling bed.
Further, the steel slag air cooling bed comprises a conveying bed, an air blower and a hot air duct, wherein a feed inlet of the conveying bed is connected with the pouring tank, the air blower is positioned below the conveying bed, an air outlet of the air blower is communicated with the conveying bed, and the hot air duct is positioned above the conveying bed, and two ends of the hot air duct are respectively communicated with the air outlet of the conveying bed and the air inlet of the double-pressure boiler.
Further, the number of air outlets of the air blower and the conveying bed is multiple, and the air outlets of the conveying beds are communicated with the hot air duct.
Further, the dual-pressure boiler further comprises a bag-type dust remover, wherein an air inlet of the bag-type dust remover is communicated with an air outlet of the dual-pressure boiler, and an air outlet of the bag-type dust remover is communicated with an air inlet of the induced draft fan.
The beneficial effects of the utility model are as follows: the utility model adopts the steel slag air cooling bed to match with the double-pressure boiler system, so that the high-temperature steel slag in the pouring tank is conveyed to the steel slag air cooling bed to air-cool the high-temperature steel slag, the generated overheated flue gas enters the double-pressure boiler, and the double-pressure boiler is provided with two routes of higher pressure and lower pressure to respectively produce steam with different pressures. The flue gas of different temperatures can be better utilized, different working condition demands are met, the flue gas temperature is reduced, and the heat recovery efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Wherein: 1. pouring the material tank; 2. a steel slag air cooling bed; 3. a double pressure boiler; 4. an induced draft fan; 5. a chimney; 6. a crusher; 7. a bag-type dust collector;
21. a transport bed; 22. a blower; 23. and a hot air duct.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only one embodiment of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.
In the following description, references to "one embodiment," "an embodiment," "one example," "an example," etc., indicate that the embodiment or example so described may include a particular feature, structure, characteristic, property, element, or limitation, but every embodiment or example does not necessarily include the particular feature, structure, characteristic, property, element, or limitation. In addition, repeated use of the phrase "according to an embodiment of the present application" does not necessarily refer to the same embodiment, although it may.
As shown in fig. 1, the utility model discloses a steel slag waste heat utilization system, which comprises a pouring tank 1, a steel slag air cooling bed 2, a double-pressure boiler 3, an induced draft fan 4 and a chimney 5. The feed inlet of slag wind cooling bed 2 is connected with pouring jar 1, and the air intake of double pressure boiler 3 communicates with the air outlet of slag wind cooling bed 2, and the air intake of draught fan 4 communicates with the air outlet of double pressure boiler 3, and the air outlet of draught fan 4 communicates with chimney 5. In the embodiment, the discharge port of the steel slag air cooling bed 2 is connected with an external discharge device. The double-pressure boiler 3 is modularly delivered, so that the construction period can be reduced, the heating surface of the double-pressure boiler 3 is designed in a mode of combining light pipes and fin pipes, the heat transfer efficiency is improved, meanwhile, dust accumulation is effectively prevented, and the equipment stability is improved.
The high-temperature steel slag in the pouring tank 1 is conveyed to the steel slag air cooling bed 2 to cool the high-temperature steel slag, the generated overheated flue gas enters the double-pressure boiler 3, and the double-pressure boiler 3 is provided with two routes of higher pressure and lower pressure to respectively produce steam with different pressures. The utility model can better utilize the flue gas with different temperatures, adapt to different working condition demands, reduce the temperature of the flue gas and improve the heat recovery efficiency. The flue gas cooled by the double-pressure boiler 3 is discharged outwards through the induced draft fan 4 and the chimney 5.
In one embodiment, the device further comprises a crusher 6, wherein a feed inlet of the crusher 6 is connected with the pouring tank 1, a discharge outlet of the crusher 6 is connected with a feed inlet of the steel slag air cooling bed 2, and the volume of steel slag is reduced so that the crushed steel slag enters the steel slag air cooling bed 2 to be cooled by air, and then the heat dissipation and cooling efficiency is higher.
In one embodiment, the steel slag wind cooling bed 2 comprises a conveying bed 21, a blower 22 and a hot wind channel 23. The feed inlet of the conveying bed 21 is connected with the pouring tank 1, and the discharge outlet of the conveying bed 21 is connected with an external discharge device. The air blower 22 is positioned below the conveying bed 21, the air outlet of the air blower is communicated with the conveying bed 21, the hot air duct 23 is positioned above the conveying bed 21, and the two ends of the hot air duct are respectively communicated with the air outlet of the conveying bed 21 and the air inlet of the double-pressure boiler 3.
In one embodiment, the number of air outlets of the air blower 22 and the conveying beds 21 is multiple, the air outlets of the conveying beds 21 are communicated with the hot air duct 23, the air blower 22 can better cool and radiate steel slag, and the air outlets of the conveying beds 21 can enable high-temperature flue gas to enter the double-pressure boiler 3 for waste heat recovery as soon as possible.
In one embodiment, the dual-pressure boiler further comprises a bag-type dust remover 7, wherein an air inlet of the bag-type dust remover 7 is communicated with an air outlet of the dual-pressure boiler 3, and an air outlet of the bag-type dust remover 7 is communicated with an air inlet of the induced draft fan 4, so that dust in the discharged flue gas is reduced, and the environment is prevented from being polluted.
The workflow of this embodiment is as follows:
the high-temperature steel slag in the pouring tank 1 enters the crusher 6, the high-temperature steel slag is crushed and then enters the conveying belt, a plurality of blowers 22 below the conveying belt are started, cold air is blown into the conveying bed 21 from bottom to top to cool the crushed high-temperature steel slag, high-temperature flue gas enters the hot air duct 23 from a plurality of air outlets on the conveying bed 21 so as to enter the double-pressure boiler 3, the double-pressure boiler 3 carries out waste heat recovery on the high-temperature flue gas, the final exhaust gas temperature is controlled below 140 ℃, and the generated double-pressure superheated steam is used for waste heat power generation. The flue gas cooled by the double-pressure boiler 3 passes through a bag-type dust remover 7 to remove dust in the flue gas, and then enters an induced draft fan 4 and a chimney 5 to be discharged to the outside. The utility model can better cool the steel slag, so that the flue gas with different temperatures generated during cooling the steel slag can be effectively utilized, the utility model is suitable for different working condition requirements, the flue gas temperature is reduced, and the heat recovery efficiency is improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A steel slag waste heat utilization system is characterized in that: the device comprises a pouring tank, a steel slag air cooling bed, a double-pressure boiler, an induced draft fan and a chimney, wherein a feeding hole of the steel slag air cooling bed is connected with the pouring tank, an air inlet of the double-pressure boiler is communicated with an air outlet of the steel slag air cooling bed, an air inlet of the induced draft fan is communicated with an air outlet of the double-pressure boiler, and an air outlet of the induced draft fan is communicated with the chimney.
2. The steel slag waste heat utilization system of claim 1, wherein: still include the breaker, the feed inlet of breaker with the pouring jar is connected, the discharge gate of breaker with the feed inlet of slag forced air cooling bed is connected.
3. The steel slag waste heat utilization system of claim 1, wherein: the steel slag air cooling bed comprises a conveying bed, an air blower and a hot air duct, wherein a feed inlet of the conveying bed is connected with the pouring tank, the air blower is positioned below the conveying bed, an air outlet of the air blower is communicated with the conveying bed, and the hot air duct is positioned above the conveying bed, and two ends of the hot air duct are respectively communicated with an air outlet of the conveying bed and an air inlet of the double-pressure boiler.
4. A steel slag waste heat utilization system as claimed in claim 3, wherein: the number of air outlets of the air blower and the conveying bed is multiple, and the air outlets of the conveying bed are communicated with the hot air duct.
5. The steel slag waste heat utilization system of claim 1, wherein: the dual-pressure boiler further comprises a bag-type dust remover, wherein an air inlet of the bag-type dust remover is communicated with an air outlet of the dual-pressure boiler, and an air outlet of the bag-type dust remover is communicated with an air inlet of the induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322020106.5U CN220453620U (en) | 2023-07-28 | 2023-07-28 | Steel slag waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322020106.5U CN220453620U (en) | 2023-07-28 | 2023-07-28 | Steel slag waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220453620U true CN220453620U (en) | 2024-02-06 |
Family
ID=89729336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322020106.5U Active CN220453620U (en) | 2023-07-28 | 2023-07-28 | Steel slag waste heat utilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220453620U (en) |
-
2023
- 2023-07-28 CN CN202322020106.5U patent/CN220453620U/en active Active
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