CN111979369A - Blast furnace cooling equipment and use method thereof - Google Patents
Blast furnace cooling equipment and use method thereof Download PDFInfo
- Publication number
- CN111979369A CN111979369A CN202011085675.2A CN202011085675A CN111979369A CN 111979369 A CN111979369 A CN 111979369A CN 202011085675 A CN202011085675 A CN 202011085675A CN 111979369 A CN111979369 A CN 111979369A
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- China
- Prior art keywords
- cooling
- plate
- blast furnace
- shell
- water
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- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 238000007789 sealing Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 241001272720 Medialuna californiensis Species 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
Abstract
The invention belongs to the technical field of cooling equipment of industrial furnaces and relates to a blast furnace cooling device and a using method thereof. The cooling device has large area of covering the furnace shell and small heat transfer resistance, and eliminates the influence of cooling water leakage on refractory materials. The equipment is simple to manufacture, low in cost and convenient to maintain, contributes to reducing the construction and operation cost of the blast furnace, and contributes to stable and safe operation of the industrial furnace.
Description
Technical Field
The invention belongs to the technical field of industrial furnace cooling equipment, and relates to blast furnace cooling equipment and a using method thereof.
Background
The walls of a large number of industrial furnaces are water-cooled and the cooling equipment is usually one of the key items of such furnaces, such as the stave of an iron-making blast furnace. Staves are typically cast or machined from materials such as iron, copper or steel. The cooling equipment of a blast furnace usually consists of hundreds of cooling walls with different sizes and thicknesses, and an installation gap of about 20-50mm is reserved between the cooling walls for absorbing the deformation generated by the temperature change of the cooling walls, so that the cooling walls can not completely cover the blast furnace walls. 4-6 cooling channels are usually arranged in the existing single cooling wall, and the temperature in the wall body is not uniform. When the cast iron cooling wall is manufactured, in order to prevent carbon elements with higher concentration in molten iron from diffusing into a cast-in water pipe (low-carbon seamless steel pipe), an anti-carburizing material needs to be coated on the surface of the water pipe, so that a gap exists between a wall body and the cast-in water pipe, and the heat transfer resistance of the wall body to the water pipe is very large.
The existing cooling wall technology has the following functions to be solved: 1) gaps exist between adjacent cooling walls, and the cooling walls cannot completely cover the furnace shell. 2) The cooling channels of the single cooling wall are limited in number, large cooling dead zones exist, and the temperature of the wall body of the cooling wall is not uniform. 3) Gaps exist between wall bodies and water pipes of cast iron cooling walls which are used in a large number of blast furnaces, so that the cooling effect is poor, and local overheating or high temperature of the furnace walls can occur under special conditions. Therefore, there is a need to develop a new cooling device to meet the cooling requirement of blast furnace.
Disclosure of Invention
In view of the above, the present invention provides a blast furnace cooling apparatus and a method for using the same, which are used to solve the disadvantages of the existing stave technology.
In order to achieve the purpose, the invention provides the following technical scheme: a blast furnace cooling device comprises more than one sandwich shell type grooved plate fixed on the outer surface of a furnace shell, wherein a closed cooling channel is formed between a single sandwich shell type grooved plate and the outer surface of the furnace shell;
the two ends of the cooling channel are provided with a water inlet and a water outlet.
Optionally, the shape of the cartridge slot plate is rectangular or trapezoidal, and the cross section of the cartridge slot plate is in the shape of a rounded trapezoid, or a rounded rectangle, or a half moon.
Optionally, the shell-type slot plate and the outer surface of the furnace shell are installed by welding.
Optionally, a bottom sealing plate and a top sealing plate are respectively arranged at the bottom and the top of the jacketed slotted plate, and the bottom sealing plate and the top sealing plate are respectively welded with the jacketed slotted plate and the furnace shell;
and a pollution discharge device is arranged on the bottom sealing plate of the clamping shell type groove plate.
Optionally, the water inlets or the water outlets of the sandwich type trough plates are arranged in a single or a plurality of ways;
two transversely adjacent sandwich type frid pass through pipeline intercommunication outlet or water inlet, realize the intercommunication of two cooling channels.
Optionally, the jacketed grooved plates cover the outer surface of the furnace shell, multiple sections are arranged in the height direction of the furnace shell, and the height, width and number of the divided blocks of each section of the jacketed grooved plates are the same or different;
two shell-clamping type groove plates which are adjacent in the vertical direction are connected through the perforated partition plate or communicated through the pipeline.
Optionally, the sandwich type slot plate is formed by rolling or punching a whole steel plate.
The use method of the blast furnace cooling equipment is applied to the blast furnace cooling equipment, and comprises the following steps: according to the working condition characteristics and the overall dimension of the blast furnace, the number and the heights of the split-type grooved plates are reasonably distributed, then the split-type grooved plates are welded on the outer surface of the furnace shell, the split-type grooved plates completely cover the outer surface of the furnace cover, and each split-type grooved plate forms an independent cooling channel; reasonable water volume and water pressure are selected according to parameters of the trough plate, cooling water is sent into a water inlet of the sandwich-type trough plate by a cooling water supply main pipe through a water supply branch pipe, and the cooling water is sent into a drainage main pipe through a drainage branch pipe communicated with a drainage outlet after passing through a cooling channel and is sent out of the blast furnace.
Alternatively, the jacketed plate cooling apparatus may be used to completely cover the outer shell of a blast furnace to cool the blast furnace, or may be used only in a part of a blast furnace, or may be used in combination with other cooling apparatus such as a stave or a cooling plate to cool a blast furnace.
Optionally, the cooling water of the sandwich type channel plate is supplied and drained independently or is connected with the cooling wall and the cooling plate in series for water supply and drainage.
The invention has the beneficial effects that: the blast furnace cooling equipment and the use method thereof have the advantages of simple, reasonable and compact structural layout, large furnace shell covering area and small heat transfer resistance, eliminate the influence of cooling water leakage on furnace body refractory materials, and are simple in structure, low in cost, convenient to maintain, beneficial to reducing the construction and operation cost of the blast furnace and beneficial to stable and safe operation of an industrial furnace.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of a sandwich type slot plate according to the present invention;
FIG. 2 is a schematic view of the installation of the jacketed slotted plate of the present invention;
FIG. 3 is a schematic cross-sectional view of a jacketed slotted plate of the present invention;
FIG. 4 is a partial schematic view of the application of the present invention in which a jacketed grooved plate covers the outer surface of the furnace shell;
FIG. 5 is a schematic view of the connection and installation of the jacketed slotted plate and the cooling wall according to the present invention.
Reference numerals: the device comprises a sandwich-type trough plate 1, a water inlet 11, a water outlet 12, a top sealing plate 13, a bottom sealing plate 14, an opening partition plate 15, a furnace shell 2, refractory materials 3, a cooling wall 4, a water supply main pipe 51, a water supply branch pipe 52, a water discharge branch pipe 53 and a water discharge main pipe 54.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 3, a cooling apparatus for a blast furnace includes at least one jacketed grooved plate 1 fixed on the outer surface of a furnace shell 2, and an independent closed cooling channel is formed between the single jacketed grooved plate 1 and the outer surface of the furnace shell 2; the two ends of the cooling channel are provided with a water inlet 11 and a water outlet 12, the shape of the sandwich shell type groove plate 1 is a long rectangular or trapezoidal shape, and the cross section of the sandwich shell type groove plate is in a half moon shape. The bottom and the top of the clamping-shell type slotted plate 1 are respectively provided with a bottom seal plate 14 and a top seal plate 13, and the bottom seal plate 14 and the top seal plate 13 are respectively welded with the clamping-shell type slotted plate 1 and the furnace shell 2; a pollution discharge device is arranged on the bottom closing plate 14 of the sandwich type trough plate 1. The water inlets 11 or the water outlets 12 of the sandwich-type frid 1 are arranged in single or multiple, and cooling water is preferably introduced from the water inlets 11 at the bottom of the sandwich-type frid 1 and is discharged from the water outlets 12 at the top of the sandwich-type frid 1; two transversely adjacent sandwich type trough plates 1 can be communicated with the water outlet 12 or the water inlet 11 through a pipeline to carry out communication of two cooling channels.
In this embodiment, please refer to fig. 4, the jacketed grooved plate 1 covers the outer surface of the furnace shell 2, 2 sections are arranged in the height direction of the furnace shell 2, and the height, width, and number of the divided blocks of each section of the jacketed grooved plate 1 are the same or different; two adjacent sandwich type trough plates 1 in the vertical direction are connected through an opening clapboard 15 or are communicated through a pipeline.
In the embodiment, the vertical direction of the jacketed grooved plate 1 is parallel to the height direction of the outer surface of the furnace shell 2, the thickness of a cooling channel formed by the jacketed grooved plate 1 and the furnace shell 2 is uniform, the cross section curve of the jacketed grooved plate 1 is continuous and smooth, and the diameter change part of the outer surface of the furnace shell 2 is subjected to adaptive transition treatment; the width of the single sandwich type slotted plate 1 should be continuously changed along the height direction, and the width of the bottom and the width of the top of the sandwich type slotted plate 1 should not be different too much.
In the present embodiment, the jacketed slotted plate 1 is made of a steel plate, preferably a single steel plate, and is rolled or stamped, and is welded to the furnace shell 2 of the blast furnace. The special-shaped slot plates in the blast furnace tuyere, iron notch and other areas can be formed by welding a plurality of steel plates.
The use method of the blast furnace cooling equipment is applied to the blast furnace cooling equipment, and comprises the following steps: according to the working condition characteristics and the overall dimension of the blast furnace, the split type groove plates 1 with proper blocks and proper overall dimensions are selected, then the split type groove plates 1 are welded on the outer surface of the furnace shell 2, the split type groove plates 1 cover the outer surface of the furnace cover 2, the cooling channel of each split type groove plate 1 is independent, a cooling water supply main pipe 51 sends cooling water into a water inlet 11 of the split type groove plate 1 through a water supply branch pipe 52, and the cooling water is sent into a drainage main pipe 54 through a drainage branch pipe 53 communicated with a drainage outlet 12 after passing through the cooling channel and is sent out of the blast furnace.
In this embodiment, referring to fig. 5, the jacketed grooved plate 1 is used in combination with the cooling wall 4, the joint is communicated through a pipeline, and the cooling water of the jacketed grooved plate 1 is connected in series with the cooling wall 4 for water supply and drainage.
The invention designs the groove-shaped cooling equipment with the shape of rectangle or trapezoid, the section of fillet trapezoid, fillet rectangle or half moon shape through simple, reasonable and compact structural layout, and the groove-shaped cooling equipment is welded and installed on the outer surface of the blast furnace shell 2 to form a cooling channel. The cooling device has large area of covering the furnace shell 2 and small heat transfer resistance, and eliminates the influence of cooling water leakage on the refractory material 3. The equipment is simple to manufacture, low in cost and convenient to maintain, contributes to reducing the construction and operation cost of the blast furnace, and contributes to stable and safe operation of the industrial furnace.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. A blast furnace cooling apparatus characterized in that: the cooling device comprises more than one clamping shell type grooved plate fixed on the outer surface of a furnace shell, wherein a closed cooling channel is formed between the single clamping shell type grooved plate and the outer surface of the furnace shell;
the two ends of the cooling channel are provided with a water inlet and a water outlet.
2. A blast furnace cooling apparatus according to claim 1, wherein: the shape of the clamping-shell type groove plate is rectangular or trapezoidal in a long strip shape, and the cross section of the clamping-shell type groove plate is in a shape of a round-corner trapezoid, or a round-corner rectangle, or a half moon.
3. A blast furnace cooling apparatus according to claim 1, wherein: the shell-clamping type groove plate is fixed with the outer surface of the furnace shell in a welding mode.
4. A blast furnace cooling apparatus according to claim 1, wherein: the bottom and the top of the clamping shell type slotted plate are respectively provided with a bottom sealing plate and a top sealing plate, and the bottom sealing plate and the top sealing plate are respectively welded with the clamping shell type slotted plate and the furnace shell;
and a pollution discharge device is arranged on the bottom sealing plate of the clamping shell type groove plate.
5. A blast furnace cooling apparatus according to claim 1, wherein: the water inlets or the water outlets of the sandwich type trough plates are arranged in a single or a plurality of ways;
two transversely adjacent sandwich type trough plates are communicated with a water outlet or a water inlet through a pipeline to carry out the series connection of two cooling channels.
6. A blast furnace cooling apparatus according to claim 1, wherein: the shell clamping type slotted plates cover the outer surface of the furnace shell, a plurality of sections are arranged in the height direction of the furnace shell, and the height, the width and the number of the divided blocks of each section of shell clamping type slotted plate are the same or different;
two shell-clamping type groove plates which are adjacent in the vertical direction are connected through the perforated partition plate or communicated through the pipeline.
7. A blast furnace cooling apparatus according to claim 1, wherein: the sandwich type slot plate is formed by rolling or punching a whole steel plate.
8. A method for using a blast furnace cooling apparatus as claimed in any one of claims 1 to 7, comprising the steps of: according to the working condition characteristics and the overall dimension of the blast furnace, the number and the heights of the split-type groove plates are reasonably distributed, and then the split-type groove plates are welded on the outer surface of the furnace shell, so that the split-type groove plates completely cover the outer surface of the furnace cover, and the cooling channel of each split-type groove plate is independent; the cooling water main water supply pipe of the jacketed slotted plate sends cooling water into the water inlet of the jacketed slotted plate through the water supply branch pipe, and the cooling water passes through the cooling channel, then is sent into the main water drainage pipe through the water drainage branch pipe communicated with the water outlet, and is sent out of the blast furnace.
9. The use method of a blast furnace cooling apparatus according to claim 8, wherein: the jacketed plate cooling device or the housing completely covering a blast furnace enables cooling of the blast furnace or is used only locally in a blast furnace, in combination with other cooling devices such as staves or cooling plates.
10. The use method of a blast furnace cooling apparatus according to claim 8, wherein: the cooling water of the sandwich type slot plate is independently supplied and drained or is connected with the cooling wall and the cooling plate in series for supplying and draining water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085675.2A CN111979369A (en) | 2020-10-12 | 2020-10-12 | Blast furnace cooling equipment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085675.2A CN111979369A (en) | 2020-10-12 | 2020-10-12 | Blast furnace cooling equipment and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111979369A true CN111979369A (en) | 2020-11-24 |
Family
ID=73450629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011085675.2A Pending CN111979369A (en) | 2020-10-12 | 2020-10-12 | Blast furnace cooling equipment and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111979369A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3440947A1 (en) * | 1984-11-09 | 1986-05-15 | Linde, Erich, Dipl.-Ing., 4300 Essen | Apparatus for the external tooling of metallurgical furnaces, especially blast furnaces |
| CN2455728Y (en) * | 2000-12-19 | 2001-10-24 | 余琨 | Cooler for blast furnace wall |
| CN203403117U (en) * | 2013-07-17 | 2014-01-22 | 宝山钢铁股份有限公司 | Blast furnace cooling water tank with Z-shaped flowing water channels |
| CN212451473U (en) * | 2020-10-12 | 2021-02-02 | 中冶赛迪上海工程技术有限公司 | Blast furnace cooling equipment |
-
2020
- 2020-10-12 CN CN202011085675.2A patent/CN111979369A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3440947A1 (en) * | 1984-11-09 | 1986-05-15 | Linde, Erich, Dipl.-Ing., 4300 Essen | Apparatus for the external tooling of metallurgical furnaces, especially blast furnaces |
| CN2455728Y (en) * | 2000-12-19 | 2001-10-24 | 余琨 | Cooler for blast furnace wall |
| CN203403117U (en) * | 2013-07-17 | 2014-01-22 | 宝山钢铁股份有限公司 | Blast furnace cooling water tank with Z-shaped flowing water channels |
| CN212451473U (en) * | 2020-10-12 | 2021-02-02 | 中冶赛迪上海工程技术有限公司 | Blast furnace cooling equipment |
Non-Patent Citations (1)
| Title |
|---|
| 任学平,郭志强,林恒,秦勤,邹家祥: "转炉炉壳实施不同冷却的研究" * |
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Application publication date: 20201124 |