CN112522457A - Steam self-cooling device of blast furnace slag-flushing granulation tower - Google Patents
Steam self-cooling device of blast furnace slag-flushing granulation tower Download PDFInfo
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- CN112522457A CN112522457A CN202011306031.1A CN202011306031A CN112522457A CN 112522457 A CN112522457 A CN 112522457A CN 202011306031 A CN202011306031 A CN 202011306031A CN 112522457 A CN112522457 A CN 112522457A
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- granulation tower
- heat conduction
- slag
- granulation
- tower
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a steam self-cooling device of a blast furnace slag-flushing granulation tower, which belongs to the technical field of ferrous metallurgy and environmental protection and comprises a granulation tower, wherein the top and the bottom of the granulation tower are respectively provided with a steam outlet and a granulation pool, the side wall of the same side of the granulation tower, which is positioned above the granulation pool, is provided with a slag spout and a slag-flushing box from top to bottom, one side wall of the granulation pool is provided with a water slag outlet, the steam self-cooling device of the blast furnace slag-flushing granulation tower also comprises a heat conduction pipe set arranged on the granulation tower, and the heat conduction pipe set is partially positioned inside the granulation tower and partially positioned outside the granulation tower. The invention provides a steam self-cooling device of a blast furnace slag-flushing granulation tower, which cools high-temperature water steam generated in the slag-flushing process through a low-temperature heat conduction pipe, eliminates the pollution of sulfur-containing steam generated in the slag-flushing process to the site and the environment, has low investment and can effectively solve the problem of large energy consumption in the steam reduction process.
Description
Technical Field
The invention belongs to the technical field of ferrous metallurgy and environmental protection, and particularly relates to a steam self-cooling device of a blast furnace slag-flushing granulation tower.
Background
Blast furnace slag generated in blast furnace iron making is generally changed into water slag through a water quenching method and then is recycled, and because the high-temperature slag is in a molten state and contains sulfide, a large amount of sulfur-containing steam is generated in the water quenching process, and the main hazards of the sulfur-containing steam include: the waste steam is discharged to the air to form secondary pollution, corrosion is formed on steel structures and equipment on the site, and the steam is accumulated on the site to form fog to influence the sight. The traditional slag flushing water fog dissipation generally adopts modes of cooling or adding cold air and the like, and the above modes have not only unsatisfactory fog dissipation effect, but also large one-time investment, large energy consumption and unfavorable energy conservation and environmental protection of enterprises.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a steam self-cooling device for a blast furnace slag-flushing granulation tower, which cools high-temperature water steam generated in the slag-flushing process through a low-temperature heat conduction pipe, eliminates the pollution of sulfur-containing steam generated in the slag-flushing process to the site and the environment, has low investment and can effectively solve the problem of large energy consumption in the steam reduction process.
The specific technical scheme for solving the technical problem of the invention is as follows:
the invention discloses a steam self-cooling device of a blast furnace slag-flushing granulation tower, which comprises a granulation tower, wherein the top and the bottom of the granulation tower are respectively provided with a steam outlet and a granulation pool, a slag spout and a slag-flushing box are arranged on the side wall of the same side of the granulation tower, which is positioned above the granulation pool, from top to bottom, one side wall of the granulation pool is provided with a water slag outlet, the steam self-cooling device of the blast furnace slag-flushing granulation tower also comprises a heat conduction pipe set arranged on the granulation tower, and the heat conduction pipe set is partially positioned in the granulation tower and partially positioned outside the granulation tower.
As a further improvement of the technical scheme of the invention, a supporting beam is arranged on the inner wall of the granulation tower above the slag spout; the part of the heat conduction pipe set at the inner side of the granulation tower is arranged at the center of the supporting beam; the heat conduction heat pipe set comprises a central support rod and a plurality of layers of heat conduction heat pipe units arranged on the central support rod; each layer of heat conduction heat pipe unit comprises a central fixing disc arranged on the central supporting rod, a plurality of low-temperature heat conduction heat pipes are arranged on the central fixing disc along the circumference of the central fixing disc, one end of each low-temperature heat conduction heat pipe is fixedly connected with the central fixing disc, and the other end of each low-temperature heat conduction heat pipe obliquely upwards penetrates through the side wall of the granulation tower and extends to the outside of the granulation tower.
As a further improvement of the technical scheme of the invention, the heat-conducting heat pipe units are at least 4 layers, and the distances between the adjacent heat-conducting heat pipe units are the same.
As a further improvement of the technical scheme of the invention, at least 10 low-temperature heat conduction heat pipes on each heat conduction heat pipe unit are arranged in a radial manner relative to the central fixed disk.
As a further improvement of the technical scheme of the invention, fins are uniformly arranged on the outer side of the low-temperature heat conduction heat pipe.
As a further improvement of the technical scheme of the invention, the included angle between the low-temperature heat conduction heat pipe and the horizontal plane is 30-75 degrees.
As a further improvement of the technical scheme of the invention, the low-temperature heat conduction heat pipes on the adjacent heat conduction heat pipe units are arranged in a staggered manner.
As a further improvement of the technical scheme of the invention, the material of the low-temperature heat conduction heat pipe is metal or composite material.
As a further improvement of the technical proposal of the invention, the granulated slag outlet is positioned on the side wall of the middle upper part of the granulation tank.
As a further improvement of the technical scheme of the invention, the height of the top of the steam outlet is 30-100 m.
When the steam self-cooling device for the blast furnace slag flushing granulating tower is applied, high-temperature blast furnace slag flows into the granulating pool through the slag spout, the slag flushing box under the slag spout sprays a plurality of strands of intensive high-pressure water columns to rapidly water-quench the high-temperature slag into water slag, and a formed slag-water mixture is discharged out of the granulating tower through the water slag outlet; meanwhile, due to the chimney effect of the granulation tower, a large amount of water vapor is formed to move upwards along the granulation tower in the process, when rising steam meets a multi-layer heat conduction pipe set consisting of low-temperature heat conduction pipes, heat contained in the steam is absorbed by the low-temperature heat conduction pipes and is transferred to the atmosphere outside the granulation tower, the steam is rapidly cooled and forms small water drops to fall into a granulation pool, and only a small amount of steam is discharged into the high altitude through a steam outlet.
Compared with the prior art, the steam self-cooling device for the blast furnace slag-flushing granulation tower cools high-temperature steam generated in the slag-flushing process through the low-temperature heat conduction pipe, forms water drops and returns to the slag-flushing granulation pool, achieves the purpose of reducing the natural discharge amount of the steam in the slag-flushing process, is environment-friendly, and utilizes the principle of self-heat conduction of circulation in the low-temperature heat conduction pipe to conduct the heat in the granulation tower to the outside of the granulation tower, the whole process does not need any energy consumption, the safety coefficient is high, the utilization rate can reach more than 99%, and the discharge of dry slag is effectively reduced; the steam self-cooling device for the blast furnace slag-flushing granulation tower has the advantages of novel design, simple structure, no electromechanical equipment in the whole structure, low one-time investment, no energy consumption in daily operation, no maintenance cost and operation cost in daily life, energy conservation, environmental protection, and good application prospect, economic value and social value.
Drawings
FIG. 1 is a schematic elevation structure view of a steam self-cooling device of a blast furnace slag-flushing granulation tower according to the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1;
in the figure: 1. a granulation tower; 2. a granulation tank; 3. a slag flushing box; 4. a slag spout; 5. a support beam; 6. a central fixed disk; 7. a low temperature heat conducting heat pipe; 8. a steam outlet; 9. a granulated slag outlet; 10. a central support rod; 11. a heat conducting pipe set; 12. and a fin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "upper", "lower", "left", "right", "inner", "outer", and the like used in the specification and claims of the present disclosure are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships are changed accordingly.
As shown in fig. 1 and 2, the steam self-cooling device for the blast furnace slag-flushing granulation tower of the invention comprises a granulation tower 1 and a heat-conducting heat pipe set 11 arranged at the middle upper part of the granulation tower 1; the top and the bottom of the granulation tower 1 are respectively provided with a steam outlet 8 and a granulation tank 2, the side wall of the same side above the granulation tank 2 is provided with a slag spout 4 and a slag flushing box 3 from top to bottom, one side wall of the granulation tank 2 is provided with a granulated slag outlet 9, and the outlet of the granulated slag outlet 9 can be further arranged on the side wall of the middle upper part of the granulation tank 2 so as to keep a certain height of water level in the granulation tank 2; in the embodiment, the steam outlet 8 is chimney-shaped, and the height of the steam outlet is between 30 and 100 meters, so that a small amount of steam is conveniently discharged; in the present embodiment, a part of the heat conduction heat pipe set 11 is located inside the granulation tower 1, another part of the heat conduction heat pipe set extends through the granulation tower 1 and extends to the outside of the granulation tower 1, and the part inside the granulation tower 1 is located right above the granulation tank 2, so that after the part of the heat conduction heat pipe set 11 inside the granulation tower 1 absorbs heat, the heat is dissipated to the atmosphere through the part of the heat conduction heat pipe set 11 outside the granulation tower 1, and further, the heat conduction heat pipe set 11 is equally arranged inside and outside the granulation tower 1.
In the embodiment, a supporting beam 5 is arranged on the inner wall of the granulation tower 1 above the slag spout 4; the part of the heat-conducting heat manifold 11 inside the granulation tower 1 is arranged at the center of the support beam 5; the heat conduction heat pipe set 11 comprises a central support rod 10 and a plurality of layers of heat conduction heat pipe units arranged on the central support rod 10, wherein the central support rod 10 is fixedly arranged at the center of the support beam 5; each layer of heat conduction heat pipe unit comprises a central fixed disk 6 arranged on a central support rod 10, a plurality of low-temperature heat conduction heat pipes 7 are uniformly arranged on the central fixed disk 6 along the circumference of the central fixed disk, one end of each low-temperature heat conduction heat pipe 7 is fixedly connected with the central fixed disk 6, and the other end of each low-temperature heat conduction heat pipe 7 obliquely upwards penetrates through the side wall of the granulation tower 1 and extends to the outside of the granulation tower 1.
Further, the heat-conducting heat pipe units are at least 4 layers, and the distances between adjacent heat-conducting heat pipe units are the same, so that the heat inside the granulation tower 1 can be fully absorbed by each heat-conducting heat pipe unit 4 in the use process of the granulation tower 1.
Furthermore, at least 10 low-temperature heat conduction heat pipes 7 are arranged on each heat conduction heat pipe unit, and are arranged in a radial mode relative to the central fixed disk 6.
In this embodiment, fins 12 may be further uniformly disposed on the outer side of the low-temperature heat conducting heat pipe 7 to increase the heat exchange area.
In this embodiment, when the low-temperature heat-conducting heat pipes 7 are arranged on the central fixed disk 6, an included angle between each low-temperature heat-conducting heat pipe 7 and a horizontal plane is 30-75 °.
Furthermore, the low-temperature heat conduction heat pipes 7 on the two adjacent heat conduction heat pipe units are arranged in a staggered manner, so that the heat absorption is more sufficient.
In this embodiment, the low-temperature heat-conducting heat pipe 7 is made of a metal material or a composite material with good heat-conducting property and corrosion resistance, so as to increase the service life.
Slag and water mixture formed in the slag flushing process of the blast furnace is discharged out of the granulating pool 2 through the water slag outlet 9, formed steam rises in the granulating tower 1, after meeting the low-temperature heat conduction heat pipe 7, most of the formed steam is cooled to form water drops which fall into the granulating pool 2, and a small amount of steam is discharged in the upper air through the steam outlet 8.
The working principle of the embodiment is as follows: high-temperature blast furnace slag flows into a granulating pool through a slag spout 4, a slag flushing box 3 under the slag spout 4 sprays a plurality of strands of intensive high-pressure water columns to rapidly water-quench the high-temperature slag into water slag, and a formed slag-water mixture is discharged out of a granulating tower 1 through a water slag outlet 9; meanwhile, due to the chimney effect of the granulation tower 1, a large amount of water vapor is formed to move upwards along the granulation tower 1 in the process, when the rising steam meets the multi-layer heat conduction pipe set 11 consisting of the low-temperature heat conduction pipes 7, the heat contained in the steam is absorbed by the low-temperature heat conduction pipes 7 and is transferred to the atmosphere outside the granulation tower 1, the steam is rapidly cooled and forms small water drops to fall into the granulation tank 2, and only a small amount of steam is discharged to the high altitude through the steam outlet 8.
The steam self-cooling device for the blast furnace slag-flushing granulation tower has the advantages of simple structure, no electromechanical equipment, convenience in installation, no energy consumption in daily operation, energy conservation and environmental friendliness.
Claims (10)
1. The utility model provides a blast furnace towards sediment granulation tower steam self-cooling device, includes granulation tower (1), the top and the bottom of granulation tower (1) set up respectively into steam outlet (8) and granulation pond (2), and its with top-down has set gradually slag spout (4) and towards slag box (3) on lieing in the lateral wall of granulation pond (2) top with one side, and a lateral wall of this granulation pond (2) is provided with water slag outlet (9), its characterized in that: the granulating tower is characterized by further comprising a heat conduction and heat collection pipe (11) arranged on the granulating tower (1), wherein the heat conduction and heat collection pipe (11) is partially positioned inside the granulating tower (1) and partially positioned outside the granulating tower (1).
2. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 1, wherein: a supporting beam (5) is arranged on the inner wall of the granulating tower (1) above the slag spout (4); the part of the heat-conducting heat pipe set (11) on the inner side of the granulation tower (1) is arranged at the center of the supporting beam (5); the heat conduction heat pipe set (11) comprises a central support rod (10) and a plurality of layers of heat conduction heat pipe units arranged on the central support rod (10); each layer of heat conduction heat pipe unit comprises a central fixed disk (6) arranged on a central support rod (10), a plurality of low-temperature heat conduction heat pipes (7) are arranged on the central fixed disk (6) along the circumference of the central fixed disk, one end of each low-temperature heat conduction heat pipe (7) is fixedly connected with the central fixed disk (6), and the other end of each low-temperature heat conduction heat pipe obliquely upwards penetrates through the side wall of the granulation tower (1) and extends to the outside of the granulation tower (1).
3. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 1 or 2, wherein: the heat conduction heat pipe units are at least 4 layers, and the distances between every two adjacent heat conduction heat pipe units are the same.
4. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 3, wherein: at least 10 low-temperature heat conduction heat pipes (7) on each heat conduction heat pipe unit are arranged in a radial mode relative to the central fixed disk (6).
5. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 4, wherein: fins (12) are uniformly arranged on the outer side of the low-temperature heat conduction heat pipe (7).
6. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 4 or 5, wherein: the included angle between the low-temperature heat conduction heat pipe (7) and the horizontal plane is 30-75 degrees.
7. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 6, wherein: and the low-temperature heat conduction heat pipes (7) on the adjacent heat conduction heat pipe units are arranged in a staggered manner.
8. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 7, wherein: the low-temperature heat conduction heat pipe (7) is made of metal or composite material.
9. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 7 or 8, wherein: the granulated slag outlet (9) is positioned on the side wall of the middle upper part of the granulating pool (2).
10. The steam self-cooling device for the blast furnace slag-washing granulation tower as claimed in claim 9, wherein: the top height of the steam outlet (8) is 30-100 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011306031.1A CN112522457A (en) | 2020-11-20 | 2020-11-20 | Steam self-cooling device of blast furnace slag-flushing granulation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011306031.1A CN112522457A (en) | 2020-11-20 | 2020-11-20 | Steam self-cooling device of blast furnace slag-flushing granulation tower |
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| CN112522457A true CN112522457A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011306031.1A Pending CN112522457A (en) | 2020-11-20 | 2020-11-20 | Steam self-cooling device of blast furnace slag-flushing granulation tower |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130264754A1 (en) * | 2010-12-14 | 2013-10-10 | Paul Wurth S.A. | Steam condensation tower for a granulation installation |
| CN203256281U (en) * | 2013-05-08 | 2013-10-30 | 中冶赛迪工程技术股份有限公司 | Flushing cinder water vapor recovery device |
| CN108754054A (en) * | 2018-08-21 | 2018-11-06 | 北京京诚科林环保科技有限公司 | System for dedusting, dehydrating and whitening blast furnace granulated slag tower |
| CN109439813A (en) * | 2018-11-13 | 2019-03-08 | 葫芦岛中益能环保技术有限公司 | A kind of blast furnace slag flushing release steam heat recovery method |
-
2020
- 2020-11-20 CN CN202011306031.1A patent/CN112522457A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130264754A1 (en) * | 2010-12-14 | 2013-10-10 | Paul Wurth S.A. | Steam condensation tower for a granulation installation |
| CN203256281U (en) * | 2013-05-08 | 2013-10-30 | 中冶赛迪工程技术股份有限公司 | Flushing cinder water vapor recovery device |
| CN108754054A (en) * | 2018-08-21 | 2018-11-06 | 北京京诚科林环保科技有限公司 | System for dedusting, dehydrating and whitening blast furnace granulated slag tower |
| CN109439813A (en) * | 2018-11-13 | 2019-03-08 | 葫芦岛中益能环保技术有限公司 | A kind of blast furnace slag flushing release steam heat recovery method |
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Application publication date: 20210319 |
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