CN210547943U - Waste heat recycling device of steelmaking continuous casting system - Google Patents
Waste heat recycling device of steelmaking continuous casting system Download PDFInfo
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- CN210547943U CN210547943U CN201921645270.2U CN201921645270U CN210547943U CN 210547943 U CN210547943 U CN 210547943U CN 201921645270 U CN201921645270 U CN 201921645270U CN 210547943 U CN210547943 U CN 210547943U
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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
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Abstract
The utility model discloses a waste heat recycling device of a steelmaking continuous casting system, which comprises a cooling device, a refining furnace and a crystallizer, wherein the cooling device comprises a water storage tank, a circulating water pump is arranged in the water storage tank, the circulating water pump is connected with a cooling water conveying pipe, the cooling water conveying pipe is connected with the crystallizer, the crystallizer is connected with a recycling pipe, the recycling pipe is connected with the water storage tank, and the recycling pipe is provided with a heat exchange device; the hearth of the refining furnace is connected with an air inlet pipe, and the air inlet pipe passes through the heat exchange equipment and is connected with air inlet equipment. The device can recover partial heat of molten steel, improve the utilization rate of heat, reduce production energy consumption, and simultaneously can quickly cool cooling water after heat exchange so as to be recycled, thereby reducing water consumption.
Description
Technical Field
The utility model belongs to the continuous casting equipment field, especially a steelmaking continuous casting system's waste heat recovery utilizes device.
Background
Continuous casting is one of important means of steel production, a steelmaking continuous casting system generally comprises a refining furnace, a casting device, a crystallizer, a cooling device, a cutting device and the like, cooling water is required to absorb heat of molten steel in order to rapidly cool the molten steel, a large amount of cooling water is required to be consumed due to high temperature of the molten steel and large amount of heat, and most of the heat of the molten steel is wasted, so that waste is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a waste heat recovery utilizes device of steelmaking continuous casting system, but the heat of recycle part molten steel to improve the utilization ratio of heat energy, reduce the energy consumption.
The purpose of the utility model is realized like this: a waste heat recycling device of a steelmaking continuous casting system, which comprises a cooling device, a refining furnace and a crystallizer,
the cooling equipment comprises a water storage tank, a circulating water pump is arranged in the water storage tank, the circulating water pump is connected with a cooling water conveying pipe, the cooling water conveying pipe is connected with a crystallizer, the crystallizer is connected with a recovery pipe, the recovery pipe is connected with the water storage tank, and heat exchange equipment is arranged on the recovery pipe;
the hearth of the refining furnace is connected with an air inlet pipe, and the air inlet pipe passes through the heat exchange equipment and is connected with air inlet equipment.
Furthermore, the heat exchange equipment comprises a heat insulation box body, an inner cavity of the heat insulation box body is divided into a water flow cavity and an air flow cavity by a horizontal partition plate, the partition plate is a heat conduction plate, the water flow cavity is positioned above the air flow cavity, the recovery pipe is connected with the water flow cavity, and the air flow cavity is connected with an air inlet pipe; the upper surface of baffle is provided with a plurality of vertical baffles, and the lower surface of baffle is provided with a plurality of vertical fin.
Further, a plurality of radiating fins are distributed in a matrix.
Further, the air inlet device is an air inlet fan.
Further, be provided with the exhaust pipe on the recovery pipe between indirect heating equipment and the water storage box, the top of exhaust pipe is provided with the cooling tube of the shape of falling U, the cooling tube is connected with the back flow, back flow and water storage box intercommunication, and the back flow is connected with the evacuation pipe.
Furthermore, a liquid level meter is arranged in the water storage tank, a water filling port is arranged at the top of the water storage tank, the water filling port is connected with a water filling pipe, and a water filling pump is arranged on the water filling pipe.
The utility model has the advantages that: when cooling water passes through the crystallizer, molten steel is cooled, the temperature of the molten steel rises to form hot water, when the hot water passes through the heat exchange equipment, the hot water exchanges heat with air in the air inlet pipe to enable the temperature of the air to rise, then the air enters a hearth of the refining furnace to provide oxygen for combustion of fuel, and the water after heat exchange enters the water storage tank again to realize cyclic utilization. The device can recover partial heat of molten steel, improve the utilization rate of heat, reduce production energy consumption, and simultaneously can quickly cool cooling water after heat exchange so as to be recycled, thereby reducing water consumption.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of the distribution of the heat sink fins.
Reference numerals: 1-a water storage tank; 2-a circulating water pump; 3-cooling water delivery pipe; 4-a crystallizer; 5, a recovery pipe; 6-heat exchange equipment; 61-a heat preservation box body; 62-a separator; 63-water flow chamber; 64-an air flow chamber; 65-a baffle; 66-a heat sink; 7, an air inlet pipe; 8-air inlet equipment; 9-a steam exhaust pipe; 10-a cooling pipe; 11-a return pipe; 12-emptying the pipe; 13-a level gauge; 14-adding a water pump; 15-water feeding pipe; 16-refining furnace.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 and 2, the utility model discloses a waste heat recovery utilizes device of steelmaking continuous casting system, including cooling arrangement, refining furnace 16 and crystallizer 4, cooling arrangement, refining furnace 16 and crystallizer 4 all are the component part of current continuous casting system, and crystallizer 4 is used for the foundry goods shaping and cools off the crystallization, and cooling arrangement is used for accelerating the cooling of molten steel, and refining furnace 16 is used for smelting the raw materials into the molten steel that meets the requirements. The refining furnace 16 generally uses coal, coke and the like as fuel, and in order to ensure sufficient combustion, air needs to be introduced during combustion to ensure sufficient oxygen supply, but because the temperature inside the hearth is very high, air at normal temperature cannot be introduced, the air needs to be heated to the required temperature and then introduced into the hearth, at present, electrical heating equipment is generally adopted to heat the air, and the energy consumption is high. And the molten steel contains a large amount of heat, transmits to the cooling water when cooling, leads to the temperature of cooling water to rise, in order to guarantee the cooling effect, the temperature of cooling water can not be too high, in order to retrieve the heat in the cooling water in order to reuse, and cool down in order to satisfy the cooling effect to the cooling water, in this device shifts the heat in the cooling water to the air, in order to reduce the heat energy waste, reduce the energy that the heated air consumed simultaneously. Specifically, the method comprises the following steps:
the cooling device comprises a water storage tank 1, wherein a circulating water pump 2 is arranged in the water storage tank 1, the circulating water pump 2 is connected with a cooling water conveying pipe 3, the cooling water conveying pipe 3 is connected with a crystallizer 4, the crystallizer 4 is connected with a recovery pipe 5, a cooling channel is arranged in the existing crystallizer 4, the cooling water conveying pipe 3 is only required to be connected with an inlet of the cooling channel, and the recovery pipe 5 is connected with an outlet of the cooling channel. The recycling pipe 5 is connected with the water storage tank 1, so that the water storage tank 1, the cooling water conveying pipe 3, the crystallizer 4 and the recycling pipe 5 form a circulating cooling system, cooling water can be recycled, and the using amount of the cooling water is reduced.
Be provided with heat transfer equipment 6 on recovery tube 5, refining furnace 16's furnace is connected with intake pipe 7, intake pipe 7 is connected with air inlet unit 8 through heat transfer equipment 6. When cooling water passes through the crystallizer 4, the cooling water absorbs heat of molten steel to become hot water, the hot water flows into the recovery pipe 5 and flows through the heat exchange device 6, the air inlet device 8 can suck external air into the air inlet pipe 7, when the air passes through the heat exchange device 6, the air exchanges heat with the hot water, the temperature of the air is increased and enters the hearth of the refining furnace 16, and the temperature of the hot water is reduced and enters the water storage tank 1 again. If the temperature of the air after heat exchange does not meet the requirement, the existing heater can be adopted for heating.
The heat exchange equipment 6 can adopt various existing heat exchangers, preferably, the heat exchange equipment 6 comprises a heat preservation box body 61, the heat preservation box body 61 can be a stainless steel box body, and a heat preservation layer is coated outside the heat preservation box body, so that heat loss can be reduced. The inner cavity of the heat preservation box body 61 is divided into a water flowing cavity 63 and an air flowing cavity 64 by a horizontal partition plate 62, and the partition plate 62 is a heat conducting plate, and can be a copper alloy plate, an aluminum alloy plate and the like. The water flowing cavity 63 is positioned above the air flowing cavity 64, the recovery pipe 5 is connected with the water flowing cavity 63, and the air flowing cavity 64 is connected with the air inlet pipe 7. The upper surface of baffle 62 is provided with a plurality of vertical baffles 65, and baffle 65 can block the flow of water for rivers dispersion plays certain stirring effect, makes the heat transfer more even. The partition plate 62 has a plurality of vertical heat radiating fins 66 on the lower surface thereof, and the heat radiating fins 66 are used for transferring the heat of the cooling water to the air, and may be made of a material having a high thermal conductivity such as a copper sheet. The cooling water flows on the upper surface of the partition plate 62 after entering the water flow cavity 63, the air flows in the air flow cavity 64 after entering the air flow cavity 64, and the heat of the cooling water is transferred to the air under the heat conduction effect of the partition plate 62 and the radiating fins 66, so that the heat exchange is realized.
The plurality of radiating fins 66 are distributed in a matrix to ensure the heat exchange effect.
The air inlet device 8 is an air inlet fan, and common air supply devices such as an air pump can also be adopted.
The water storage tank 1, the cooling water conveying pipe 3, the crystallizer 4 and the recovery pipe 5 can constitute a closed circulating cooling system, but after the cooling water absorbs the heat of molten steel, there is partial cooling water gasification to become vapor, be difficult to with all vapor liquefaction during the heat transfer, consequently, along with going on of circulating cooling, vapor constantly increases, and the pressure in the cooling system constantly increases, and it influences the cooling effect, consequently, the utility model discloses an open cooling system, specifically, be provided with the exhaust steam pipe 9 on the recovery pipe 5 between heat transfer device 6 and the water storage tank 1, the top of exhaust steam pipe 9 is provided with the cooling tube 10 of the shape of falling U, cooling tube 10 is connected with back flow 11, back flow 11 and water storage tank 1 intercommunication, and back flow 11 are connected with evacuation pipe 12. The water vapor in the recovery pipe 5 automatically enters the exhaust pipe 9, part of the water vapor condenses and liquefies when passing through the cooling pipe 10, then flows into the water storage tank 1 along the return pipe 11 and can be reused, and part of the water vapor is emptied through the emptying pipe 12.
After the open type cooling system is adopted, cooling water is consumed to a certain extent, in order to supplement the cooling water in time, the water storage tank 1 is internally provided with the liquid level meter 13, the top of the water storage tank 1 is provided with the water filling port, the water filling port is connected with the water filling pipe 15, and the water filling pipe 15 is provided with the water filling pump 14. The water adding pipe 15 is connected with a water source, the liquid level meter 13 is used for detecting the water level in the water storage tank 1, and when the water level is low, the water adding pump 14 is started to add water into the water storage tank 1.
In conclusion, the device can recover partial heat of molten steel, improve the utilization rate of the heat, reduce the production energy consumption, and simultaneously can quickly cool the cooling water after heat exchange so as to be recycled, thereby reducing the water consumption.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a steelmaking continuous casting system's waste heat recovery utilizes device, includes cooling arrangement, refining furnace (16) and crystallizer (4), its characterized in that:
the cooling equipment comprises a water storage tank (1), a circulating water pump (2) is arranged in the water storage tank (1), the circulating water pump (2) is connected with a cooling water conveying pipe (3), the cooling water conveying pipe (3) is connected with a crystallizer (4), the crystallizer (4) is connected with a recovery pipe (5), the recovery pipe (5) is connected with the water storage tank (1), and heat exchange equipment (6) is arranged on the recovery pipe (5);
the hearth of the refining furnace (16) is connected with an air inlet pipe (7), and the air inlet pipe (7) passes through the heat exchange equipment (6) and is connected with an air inlet device (8).
2. The waste heat recycling device of the steelmaking continuous casting system as claimed in claim 1, wherein: the heat exchange equipment (6) comprises a heat insulation box body (61), an inner cavity of the heat insulation box body (61) is divided into a water flowing cavity (63) and an air flowing cavity (64) by a horizontal partition plate (62), the partition plate (62) is a heat conduction plate, the water flowing cavity (63) is positioned above the air flowing cavity (64), the recovery pipe (5) is connected with the water flowing cavity (63), and the air flowing cavity (64) is connected with an air inlet pipe (7); the upper surface of baffle (62) is provided with a plurality of vertical baffles (65), and the lower surface of baffle (62) is provided with a plurality of vertical fin (66).
3. The waste heat recycling device of the steelmaking continuous casting system as claimed in claim 2, wherein: the plurality of heat radiating fins (66) are distributed in a matrix.
4. The waste heat recycling device of the steelmaking continuous casting system as claimed in claim 1, wherein: the air inlet equipment (8) is an air inlet fan.
5. The waste heat recycling device of the steelmaking continuous casting system as claimed in claim 1, wherein: be provided with steam exhaust pipe (9) on recovery tube (5) between indirect heating equipment (6) and water storage box (1), the top of steam exhaust pipe (9) is provided with cooling tube (10) of the shape of falling U, cooling tube (10) are connected with back flow (11), back flow (11) and water storage box (1) intercommunication, and back flow (11) are connected with evacuation pipe (12).
6. The waste heat recycling device of the steelmaking continuous casting system as claimed in claim 5, wherein: the water storage tank is characterized in that a liquid level meter (13) is arranged in the water storage tank (1), a water filling port is arranged at the top of the water storage tank (1), the water filling port is connected with a water filling pipe (15), and a water filling pump (14) is arranged on the water filling pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645270.2U CN210547943U (en) | 2019-09-29 | 2019-09-29 | Waste heat recycling device of steelmaking continuous casting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645270.2U CN210547943U (en) | 2019-09-29 | 2019-09-29 | Waste heat recycling device of steelmaking continuous casting system |
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| CN210547943U true CN210547943U (en) | 2020-05-19 |
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| CN201921645270.2U Active CN210547943U (en) | 2019-09-29 | 2019-09-29 | Waste heat recycling device of steelmaking continuous casting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815290A (en) * | 2023-02-16 | 2023-03-21 | 云南省生态环境科学研究院 | Non-ferrous metal smelting waste environment-friendly treatment equipment and use method thereof |
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2019
- 2019-09-29 CN CN201921645270.2U patent/CN210547943U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815290A (en) * | 2023-02-16 | 2023-03-21 | 云南省生态环境科学研究院 | Non-ferrous metal smelting waste environment-friendly treatment equipment and use method thereof |
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