CN220317858U - Hot-blast stove for pig iron smelting - Google Patents
Hot-blast stove for pig iron smelting Download PDFInfo
- Publication number
- CN220317858U CN220317858U CN202321733191.3U CN202321733191U CN220317858U CN 220317858 U CN220317858 U CN 220317858U CN 202321733191 U CN202321733191 U CN 202321733191U CN 220317858 U CN220317858 U CN 220317858U
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- China
- Prior art keywords
- air
- hot
- pipe
- induced
- pig iron
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- 229910000805 Pig iron Inorganic materials 0.000 title claims abstract description 17
- 238000003723 Smelting Methods 0.000 title claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 6
- 239000003517 fume Substances 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003546 flue gas Substances 0.000 abstract description 6
- 238000005338 heat storage Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000011094 fiberboard Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Gas Burners (AREA)
Abstract
The utility model relates to the technical field of pig iron smelting, in particular to a hot blast stove for pig iron smelting, which comprises a stove body, a combustion assembly, an air guiding assembly and an air supplying assembly, wherein the front end of the stove body is provided with an air supplying opening, the tail end of the stove body is provided with an air guiding opening, the combustion assembly is arranged in the stove body and divides the stove body into a hot air area and an air guiding area, the air guiding assembly is connected with the air guiding opening and is used for supplying air to the air guiding area, the air supplying assembly comprises an air supplying pipe and a return pipe, the air supplying pipe is connected with the air supplying opening and is used for supplying air to a blast furnace, and the return pipe is respectively communicated with the hot air area and the air guiding assembly and is used for guiding flue gas to the air guiding assembly.
Description
Technical Field
The utility model relates to the technical field of pig iron smelting, in particular to a hot blast stove for pig iron smelting.
Background
The hot blast stove is a thermodynamic machine for heating blast air to a required temperature, is equipment for heating blast air for a blast furnace, and is an indispensable important component of a modern blast furnace. In the use process of the hot blast stove, the internal temperature is required to be continuously stored, and then the hot blast stove is fed into a blast furnace.
The existing hot blast stove introduces cold air into the furnace body through an induced draft fan, stores heat through combustion heating, has poor heat storage effect due to the introduced cold air, has uneven hot air temperature, and cannot better meet the use requirements.
Disclosure of Invention
In order to solve the problems, the utility model provides pig iron smelting, which has the advantages of simple structure, reasonable design and good heat storage effect.
The technical scheme adopted by the utility model is as follows:
the utility model provides a pig iron is smelted and is used hot-blast furnace, includes furnace body, combustion module, induced air subassembly and air supply subassembly, the front end of furnace body is equipped with the supply air port, the tail end of furnace body is equipped with the induced air port, combustion module set up in the furnace body, with the furnace body separates into hot-air zone and induced air zone, the induced air subassembly with the induced air port is connected, is used for the induced air zone air supply, the air supply subassembly includes supply-air pipe and back flow, the supply-air pipe with the supply-air port is connected, is used for to blast furnace blast, the back flow communicates respectively the hot-air zone with the induced air subassembly is used for leading out the flue gas to the induced air subassembly is for introducing the preheating of the gas of induced air port.
Further, the return pipe is provided with a variable frequency fan for regulating and controlling the air flow in the return pipe.
Further, the combustion assembly comprises a burner and a gas conveying pipe fitting, wherein the burner is installed in the furnace body, and the gas conveying pipe fitting is connected with the burner and extends out of the furnace body to convey gas to the burner.
Further, the induced air subassembly includes induced air pipe and draught fan, the induced air pipe with the induced air mouth is connected, the draught fan install in the induced air pipe, the back flow with the induced air pipe intercommunication.
Further, one end of the air guide pipe, which is far away from the air guide opening, is provided with a first air inlet and a second air inlet, and the return pipe is connected with the first air inlet.
Further, the reflux pipes are provided with a group, and the reflux pipes are symmetrically distributed on two opposite sides of the hot air zone.
Further, the induced air area is provided with a flow equalizing plate.
Further, the furnace body comprises a steel shell and aluminum silicate fiber plates arranged on the inner wall of the steel shell.
The beneficial effects of the utility model are as follows:
the utility model comprises a furnace body, a combustion assembly, an air guiding assembly and an air supplying assembly, wherein the front end of the furnace body is provided with the air supplying opening, the tail end of the furnace body is provided with the air guiding opening, the combustion assembly is arranged in the furnace body and divides the furnace body into a hot air area and an air guiding area, the air guiding assembly is connected with the air guiding opening and is used for supplying air to the air guiding area, the air supplying assembly comprises an air supplying pipe and a return pipe, the air supplying pipe is connected with the air supplying opening and is used for supplying air to a blast furnace, the return pipe is respectively communicated with the hot air area and the air guiding assembly and is used for leading out flue gas to the air guiding assembly.
Drawings
FIG. 1 is a schematic diagram of the structure of some embodiments of the present application;
fig. 2 is a schematic structural diagram of a flow equalization plate according to some embodiments of the present application;
reference numerals illustrate: furnace body 1, supply-air inlet 11, induced air inlet 12, hot air zone 13, induced air zone 14, steel shell 15, aluminium silicate fiberboard 16, combustion module 2, combustor 21, gas delivery pipe fitting 22, induced air module 3, induced air pipe 31, first air intake 311, second air intake 312, induced draft fan 32, air supply module 4, blast pipe 41, back flow pipe 42, variable frequency fan 43, flow equalizing plate 5.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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 be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be mechanically coupled, directly coupled, or indirectly coupled via an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-2, the hot blast stove for pig iron smelting according to the present embodiment includes a stove body 1, a combustion assembly 2, an air guiding assembly 3 and an air supplying assembly 4, an air supplying opening 11 is provided at the front end of the stove body 1, an air guiding opening 12 is provided at the tail end of the stove body 1, the combustion assembly 2 is disposed in the stove body 1 and divides the stove body 1 into a hot air area 13 and an air guiding area 14, the air guiding assembly 3 is connected with the air guiding opening 12 and is used for supplying air to the air guiding area 14, the air supplying assembly 4 includes an air supplying pipe 41 and a return pipe 42, the air supplying pipe 41 is connected with the air supplying opening 11 and is used for supplying air to the blast furnace, and the return pipe 42 is respectively communicated with the hot air area 13 and the air guiding assembly 3 and is used for guiding flue gas to the air guiding assembly 3 and preheating the gas introduced into the air guiding opening 12.
The embodiment has simple structure and reasonable design, and can preheat the introduced air flow by arranging the return pipe 42 to guide a part of hot air to the induced air component 3, thereby ensuring the heat storage effect and better meeting the use requirement.
Specifically, the return pipe 42 can be communicated with the position, close to the combustion assembly 2, of the furnace body 1, and the heat can be carried to the induced air assembly 3 better through the flue gas due to high flue gas temperature at the position, so that the induced air assembly 3 can be preheated to introduce the gas, and an insulation layer is required to be arranged on the outer side of the return pipe 42 for reducing heat loss.
More specifically, the return pipes 42 are provided with a set, and one set of return pipes 42 is symmetrically distributed on two opposite sides of the hot air zone 13.
In this embodiment, by arranging a set of return pipes 42 at symmetrical positions, the heat is conveniently led out, and a better preheating effect is achieved.
On the basis of the above embodiment, the return pipe 42 is provided with a variable frequency fan 43 for regulating and controlling the air flow in the return pipe 42.
In this embodiment, through setting up variable frequency fan 43, can control the air current size in the back flow 42, and then can adjust preheating temperature, its simple structure, preheating temperature is adjustable, convenient to use.
In some embodiments, the combustion assembly 2 includes a burner 21 and a gas delivery pipe 22, wherein the burner 21 is installed in the furnace body 1, and the gas delivery pipe 22 is connected to the burner 21 and extends out of the furnace body 1, so as to deliver gas to the burner 21.
In the embodiment, the combustion heat storage is specifically shown by adopting fuel gas, and the device has the advantages of simple structure, stable combustion heat storage, difficult dust generation and easy maintenance.
In some embodiments, the induced air component 3 includes an induced air pipe 31 and an induced draft fan 32, the induced air pipe 31 is connected with the induced air port 12, the induced draft fan 32 is mounted on the induced air pipe 31, and the return pipe 42 is communicated with the induced air pipe 31.
Specifically, a first air inlet 311 and a second air inlet 312 are provided at an end of the air induction pipe 31 away from the air induction port 12, and the return pipe 42 is connected to the first air inlet 311.
In this embodiment, specifically, two first air inlets 311 are matched with a group of return pipes 42, so that the two first air inlets can be connected in a one-to-one correspondence manner, so that independent conveying, regulation and control can be conveniently performed, and the use is convenient.
In some embodiments, the air guiding area 14 is provided with a flow equalizing plate 5.
In this embodiment, through setting up flow equalizing plate 5, the even distribution of gaseous of being convenient for to can get into hot-blast zone 13 uniformly, and through combustion module 2 burning heat accumulation, its simple structure, heat accumulation effect is good.
In some embodiments, the furnace body 1 includes a steel shell 15 and aluminum silicate fiber boards 16 disposed on an inner wall of the steel shell 15.
In this embodiment, the steel shell 15 and the aluminum silicate fiber board 16 arranged on the inner wall of the steel shell 15 form the furnace body 1, so that the furnace body 1 has high service strength and good high temperature resistance, can meet the high temperature heat storage service environment, and has good durability.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (8)
1. The utility model provides a hot-blast furnace for pig iron smelting, its characterized in that includes furnace body, combustion module, induced air subassembly and air supply subassembly, the front end of furnace body is equipped with the supply air port, the tail end of furnace body is equipped with the induced air port, combustion module set up in the furnace body, with the furnace body separates into hot-air zone and induced air zone, the induced air subassembly with the induced air port is connected for the induced air zone air supply, the air supply subassembly includes blast pipe and back flow, the blast pipe with the supply air port is connected, is used for blast furnace blast, the back flow communicates respectively the hot-air zone with the induced air subassembly for draw fume to the induced air subassembly is for introducing the preheating of the gas of induced air port.
2. The hot-blast stove for pig iron production according to claim 1, wherein the return pipe is provided with a variable frequency fan for regulating the air flow in the return pipe.
3. The hot blast stove for pig iron production according to claim 1, wherein said combustion unit comprises a burner and a gas delivery pipe, said burner being installed in said stove body, said gas delivery pipe being connected to said burner and extending out of said stove body for delivering gas to said burner.
4. The hot-blast stove for pig iron smelting according to claim 1, wherein the induced air component comprises an induced air pipe and an induced draft fan, the induced air pipe is connected with the induced air port, the induced draft fan is installed in the induced air pipe, and the return pipe is communicated with the induced air pipe.
5. The hot-blast stove for pig iron production according to claim 4, wherein the air introduction pipe has a first air inlet and a second air inlet at an end thereof remote from the air introduction port, and the return pipe is connected to the first air inlet.
6. The hot blast stove for pig iron production according to claim 1, wherein said return pipes are provided in a group, and a group of said return pipes are symmetrically arranged on opposite sides of said hot blast zone.
7. The hot-blast stove for pig iron production according to claim 1, wherein the air introduction area is provided with a flow equalizing plate.
8. The hot blast stove for pig iron production according to claim 1, wherein said furnace body comprises a steel housing and aluminum silicate fiber plates provided on an inner wall of said steel housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321733191.3U CN220317858U (en) | 2023-07-04 | 2023-07-04 | Hot-blast stove for pig iron smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321733191.3U CN220317858U (en) | 2023-07-04 | 2023-07-04 | Hot-blast stove for pig iron smelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220317858U true CN220317858U (en) | 2024-01-09 |
Family
ID=89415591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321733191.3U Active CN220317858U (en) | 2023-07-04 | 2023-07-04 | Hot-blast stove for pig iron smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220317858U (en) |
-
2023
- 2023-07-04 CN CN202321733191.3U patent/CN220317858U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |