CN218932193U - Blast furnace body cooling system - Google Patents
Blast furnace body cooling system Download PDFInfo
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- CN218932193U CN218932193U CN202320047256.2U CN202320047256U CN218932193U CN 218932193 U CN218932193 U CN 218932193U CN 202320047256 U CN202320047256 U CN 202320047256U CN 218932193 U CN218932193 U CN 218932193U
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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
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Abstract
The utility model relates to a cooling system of a blast furnace body, which comprises a blast furnace, a high-pressure steam drum, a high-pressure circulating pump, a low-pressure steam drum, a low-pressure circulating pump and a water supply pump; after the high-pressure steam drum is connected with the high-pressure circulating pump, the high-pressure steam drum is connected with a cooling wall outlet of the cooling wall corresponding to the upper furnace body of the blast furnace, and the high-pressure circulating pump is connected with a cooling wall inlet of the cooling wall corresponding to the upper furnace body of the blast furnace; after the low-pressure steam drum is connected with the low-pressure circulating pump, the low-pressure steam drum is connected with a cooling wall outlet of the cooling wall corresponding to the lower furnace body of the blast furnace, and the low-pressure circulating pump is connected with a cooling wall inlet of the cooling wall corresponding to the lower furnace body of the blast furnace; the low-pressure steam drum is connected with the high-pressure steam drum through a water supply pump. The utility model adopts low-pressure parameter vaporization cooling in a high heat load area, reduces the wall temperature of the cooling wall, is favorable for protecting slag skin formation of the cooling wall, ensures normal production of the blast furnace, simultaneously adopts high-parameter vaporization cooling to recycle the waste heat of the furnace body and generate externally supplied steam, and is favorable for energy conservation and carbon reduction.
Description
Technical Field
The utility model relates to the field of blast furnace smelting, in particular to a blast furnace body cooling system.
Background
The blast furnace is an important large-scale device in modern iron and steel plants, and the blast furnace smelts iron ore into qualified molten iron at high temperature. The temperature in the blast furnace can reach 1900 ℃ during production, the furnace body of the blast furnace cannot bear the high temperature, and the furnace body must be cooled.
The existing blast furnace generally adopts a soft water closed circulation system to cool the furnace body, cooling water in the system takes away heat of the furnace body, meanwhile, the temperature of the cooling water is increased, and then the cooling water is sent into a cooling tower to be cooled by cold air (air). The heat of the blast furnace body is released into the air by the cooling water and is not fully utilized, so that a large amount of energy is wasted, and the energy conservation and the carbon reduction are not facilitated.
Disclosure of Invention
The utility model aims to solve the problems and provides a blast furnace body cooling system.
The utility model adopts the following technical scheme:
a blast furnace body cooling system comprising: the device comprises a blast furnace, a high-pressure steam drum, a high-pressure circulating pump, a low-pressure steam drum, a low-pressure circulating pump and a water supply pump;
after the high-pressure steam drum is connected with the high-pressure circulating pump, the high-pressure steam drum is connected with a cooling wall outlet of the cooling wall corresponding to the upper furnace body of the blast furnace, and the high-pressure circulating pump is connected with a cooling wall inlet of the cooling wall corresponding to the upper furnace body of the blast furnace;
after the low-pressure steam drum is connected with the low-pressure circulating pump, the low-pressure steam drum is connected with a cooling wall outlet of the cooling wall corresponding to the lower furnace body of the blast furnace, and the low-pressure circulating pump is connected with a cooling wall inlet of the cooling wall corresponding to the lower furnace body of the blast furnace;
the low-pressure steam drum is connected with the high-pressure steam drum through a water supply pump.
Further, the upper furnace body of the blast furnace comprises a furnace body above the furnace belly, and the lower furnace body of the blast furnace comprises a furnace body below the furnace belly.
Further, the device also comprises a water supplementing pipe connected with the low-pressure air bag.
Further, the device also comprises an exhaust pipe connected with the high-pressure air bag.
The utility model adopts low-pressure parameter vaporization cooling in a high heat load area, reduces the wall temperature of the cooling wall, is favorable for protecting slag skin formation of the cooling wall, ensures normal production of the blast furnace, simultaneously adopts high-parameter vaporization cooling to recycle the waste heat of the furnace body and generate externally supplied steam, and is favorable for energy conservation and carbon reduction.
Drawings
Fig. 1 is a block diagram of a system according to an embodiment of the present utility model.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
The utility model will now be further described with reference to the drawings and detailed description.
The embodiment discloses a blast furnace body cooling system, as shown in fig. 1, comprising: a blast furnace 1, a high-pressure steam drum 2, a high-pressure circulating pump 3, a low-pressure steam drum 4, a low-pressure circulating pump 5 and a water feeding pump 6.
After the high-pressure steam drum 2 is connected with the high-pressure circulating pump 3, the high-pressure steam drum 2 is connected to a cooling wall outlet of the cooling wall corresponding to the upper furnace body of the blast furnace 1, and the high-pressure circulating pump 3 is connected to a cooling wall inlet of the cooling wall corresponding to the upper furnace body of the blast furnace 1.
After the low-pressure steam drum 4 is connected with the low-pressure circulating pump 5, the low-pressure steam drum 4 is connected to a cooling wall outlet of the cooling wall corresponding to the lower furnace body of the blast furnace 1, and the low-pressure circulating pump 5 is connected to a cooling wall inlet of the cooling wall corresponding to the lower furnace body of the blast furnace 1.
The low-pressure steam drum 4 is connected with the high-pressure steam drum 2 through a water supply pump 6.
In this embodiment, the upper furnace body of the blast furnace 1 includes a furnace body above the furnace floor, and the lower furnace body of the blast furnace 1 includes a furnace body below the furnace floor.
Further, in this embodiment, the device further includes a water supplementing pipe 8 connected to the low-pressure air bag, and the water supplementing pipe is used for mixing the steam-water mixture flowing out from the cooling wall outlet of the cooling wall corresponding to the lower furnace body.
Further, the embodiment also comprises an exhaust pipe 7 connected with the high-pressure air bag for exhausting high-pressure steam.
The working principle of the embodiment is as follows: when the blast furnace 1 is smelted, the cooling wall corresponding to the lower furnace body of the blast furnace 1 is subjected to heat radiation of furnace burden and fuel, the temperature of the cooling wall is increased, cooling water in the cooling wall is heated to form a steam-water mixture (the pressure is 0.2Mpa and the temperature is 120 ℃), then the steam-water mixture enters the low-pressure steam drum 4, and the steam-water mixture in the low-pressure steam drum 4 is mixed with supplementing water entering the water supplementing pipe 8. The make-up water is heated to remove dissolved oxygen, and a part of the make-up water is sent to the cooling wall inlet of the cooling wall corresponding to the lower furnace body of the blast furnace 1 by the low-pressure circulating pump 5, and the other part of the make-up water is sent to the high-pressure steam drum 2 by the water feed pump 6. The feed water in the high-pressure steam drum 2 is sent to the cooling wall inlet of the cooling wall corresponding to the upper furnace body of the blast furnace 1 by the high-pressure circulating pump 3, is heated into a steam-water mixture (pressure 1.6Mpa, temperature 204 ℃) in the cooling wall, then returns to the high-pressure steam drum 2 from the cooling wall outlet of the cooling wall corresponding to the upper furnace body of the blast furnace 1, and the steam separated in the high-pressure steam drum 2 (pressure 1.6Mpa, temperature 204 ℃) is sent to a user through a steam exhaust pipe.
According to the utility model, double-pressure vaporization cooling is adopted, namely, a vaporization cooling system with low-pressure parameters is adopted for a high-heat load area, the temperature of a steam-water mixture of the cooling system with low parameters is low, the wall temperature of a cooling wall of the area can be reduced, and slag skin protection cooling wall is facilitated to be formed by condensing iron slag; a high-pressure parameter vaporization cooling system is adopted in the medium-low heat load area, and the waste heat is recovered to generate steam for supplying users; the heat recovered by the low-pressure parameter vaporization cooling system is used for heating and deoxidizing the water supply of the high-pressure parameter system.
The utility model has the following beneficial effects:
1. and cooling the furnace body to ensure the normal production of the blast furnace.
2. And (5) adopting vaporization cooling to recover the waste heat of the furnace body.
3. The low-pressure vaporization cooling is adopted for the high-temperature areas such as the furnace belly, so that the wall temperature of the cooling wall is reduced, and the formation of protective slag is facilitated.
4. The cooling water quantity is small, and the energy consumption of the circulating pump is reduced.
5. The furnace body can be naturally cooled in a circulating way during power failure, and an accident water pump is not required to be arranged.
6. And a constant pressure tank is not required to be arranged, so that the resource consumption is low.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (4)
1. A blast furnace body cooling system, comprising: the device comprises a blast furnace, a high-pressure steam drum, a high-pressure circulating pump, a low-pressure steam drum, a low-pressure circulating pump and a water supply pump;
after the high-pressure steam drum is connected with the high-pressure circulating pump, the high-pressure steam drum is connected with a cooling wall outlet of the cooling wall corresponding to the upper furnace body of the blast furnace, and the high-pressure circulating pump is connected with a cooling wall inlet of the cooling wall corresponding to the upper furnace body of the blast furnace;
after the low-pressure steam drum is connected with the low-pressure circulating pump, the low-pressure steam drum is connected with a cooling wall outlet of the cooling wall corresponding to the lower furnace body of the blast furnace, and the low-pressure circulating pump is connected with a cooling wall inlet of the cooling wall corresponding to the lower furnace body of the blast furnace;
the low-pressure steam drum is connected with the high-pressure steam drum through a water supply pump.
2. The blast furnace body cooling system according to claim 1, wherein: the upper furnace body of the blast furnace comprises a furnace body above the furnace belly, and the lower furnace body of the blast furnace comprises a furnace body below the furnace belly and the furnace body below the furnace belly.
3. The blast furnace body cooling system according to claim 1, wherein: the device also comprises a water supplementing pipe connected with the low-pressure air bag.
4. The blast furnace body cooling system according to claim 1, wherein: the device also comprises an exhaust pipe connected with the high-pressure air bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320047256.2U CN218932193U (en) | 2023-01-09 | 2023-01-09 | Blast furnace body cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320047256.2U CN218932193U (en) | 2023-01-09 | 2023-01-09 | Blast furnace body cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218932193U true CN218932193U (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320047256.2U Active CN218932193U (en) | 2023-01-09 | 2023-01-09 | Blast furnace body cooling system |
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| Country | Link |
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| CN (1) | CN218932193U (en) |
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2023
- 2023-01-09 CN CN202320047256.2U patent/CN218932193U/en active Active
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