CN215177026U - Ferroaluminum is smelted and is used fire prevention subassembly and gas cleaning system - Google Patents
Ferroaluminum is smelted and is used fire prevention subassembly and gas cleaning system Download PDFInfo
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- CN215177026U CN215177026U CN202121551591.3U CN202121551591U CN215177026U CN 215177026 U CN215177026 U CN 215177026U CN 202121551591 U CN202121551591 U CN 202121551591U CN 215177026 U CN215177026 U CN 215177026U
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Abstract
The utility model discloses a fire-proof component and a flue gas purification system for aluminum-iron alloy smelting, which comprises a smoke collecting hood through an exhaust pipe and a main exhaust pipe, wherein the outer surface of the smoke collecting hood is provided with a partition device for partitioning the overflow of flue gas; the device can generate a partition air curtain around the gas-collecting hood, thereby reducing the overflow of the flue gas to a certain extent; the gas collecting hood is used for solving the problem that flue gas possibly overflows between the gas collecting hood and the smelting furnace in the prior art.
Description
Technical Field
The utility model relates to an aluminium iron alloy smelts clean system technical field, concretely relates to aluminium iron alloy is smelted and is used fire prevention subassembly and flue gas purification system.
Background
The general ferroalloy is a product which is added into molten iron as a deoxidizer, an element additive and the like during steel making to enable the steel to have certain characteristics or meet certain requirements; the alloy consisting of iron and aluminum produced by our company is mainly used as a deoxidizer in steel smelting: the aluminum-iron alloy removes oxygen in molten steel in the steel making process and also removes other impurities in the steel, such as sulfur, nitrogen and the like.
When a large-scale aluminum-iron alloy smelting furnace is used for feeding materials in front of the furnace, because the temperature in the furnace is high, organic matters contained in the fed secondary aluminum raw materials are quickly and incompletely combusted to generate a large amount of dense smoke which overflows and disperses from the upper edge of a furnace mouth; in order to prevent the smoke from polluting the environment, a smoke cover is usually arranged to collect the smoke; the main pollutants generated in the dense smoke overflowing from the furnace comprise acidic gas, smoke dust, heavy metals and the like and carry a large amount of heat, so that the smoke cover is prevented from overflowing by the smoke; the operation activities such as melt stirring and the like in the smelting process of the aluminum-iron alloy are facilitated; therefore, a certain mounting distance is kept between the flue gas hood and the smelting furnace; meanwhile, the flue gas hood is usually a fixed mounting structure, the vertical distance of the flue gas hood relative to the smelting furnace is relatively fixed, the flue gas hood is generally connected with a main exhaust pipe through an exhaust pipe with a certain length, and the position of the flue gas hood in the vertical direction is not adjustable after the flue gas hood is mounted; the gas-collecting hood and the smelting furnace have a certain distance, so that the effect is poor during gas collection and smoke discharge; sometimes causing some dense smoke to overflow from the smoke filter; based on the technical background, the inventor designs a fireproof assembly for smelting aluminum-iron alloy and a flue gas purification system, and the device generates a partition air curtain around a gas-collecting hood so as to reduce the overflow of flue gas to a certain extent.
Disclosure of Invention
The utility model aims to provide a fireproof assembly for smelting aluminum-iron alloy and a flue gas purification system, which can generate a partition air curtain around a gas collecting hood to reduce the overflow of flue gas to a certain extent; the gas collecting hood is used for solving the problem that flue gas possibly overflows between the gas collecting hood and the smelting furnace in the prior art.
The utility model adopts the technical scheme as follows: a fire-proof component for smelting aluminum-iron alloy comprises a smoke-collecting hood which passes through an exhaust pipe and a main exhaust pipe, wherein the outer surface of the smoke-collecting hood is provided with a partition device for partitioning the overflow of smoke; a fireproof cover is arranged at the inlet below the smoke collecting cover; two opposite slide ways are fixed at the inlet below the smoke collecting hood, and the fireproof hood is in inserted fit with the slide ways; the partition device comprises a divergent cover and an air duct which are fixed at the outer edge of the smoke collecting cover; the divergent cover is fixed with the outer edge of the smoke collecting cover in a sealing way; the air duct is arranged at the outer edge of the upper side of the diffusion cover; a plurality of branch pipes are formed at the lower side of the gas-guide pipe, and the gas-guide pipe is communicated with a cavity formed by the divergent cover and the smoke collecting cover through the branch pipes; the air duct is connected to an external air source through an access pipe; and an external high-pressure air source is introduced into the partition device to generate an air curtain to surround the smelting furnace.
Specifically, the outer fringe of dispersing the cover is fixed with small-size air compressor machine, and its one end of giving vent to anger links to each other with inserting the pipe.
Optionally, a control valve is arranged at one end of the access pipe close to the diverging cover; the control valve is any one of a manual valve and an electromagnetic valve.
Preferably, a water cooling system is arranged, and the water cooling system comprises a mounting frame and a water cooling pipe; the middle of the mounting rack is provided with a plurality of fin plates, and the water cooling pipes are inserted on the fin plates.
The application also discloses a flue gas purification system, and this flue gas purification system includes the fire prevention subassembly of above-mentioned factual.
The beneficial effects of the utility model reside in that: the device can generate a partition air curtain around the gas-collecting hood, thereby reducing the overflow of the flue gas to a certain extent; the gas collecting hood is used for solving the problem that flue gas possibly overflows between the gas collecting hood and the smelting furnace in the prior art.
In addition, the invention also has the following characteristics: a fireproof cover is arranged at an inlet below the smoke collecting hood, the fireproof cover is used for preventing the smoke collecting hood from being burnt by turning and rushing fire during feeding, and the fireproof cover is in inserted fit with the slide way; such mounting means is convenient to dismantle, is convenient for maintain the maintenance in the collection petticoat pipe.
Drawings
Fig. 1 is a schematic view of the flue gas purification system of the present invention.
Fig. 2 is the structure schematic diagram of the smoke collecting hood of the utility model.
Fig. 3 is a schematic view of the airway structure of the present invention.
Fig. 4 is a schematic view of the fire-proof cover structure of the present invention.
Fig. 5 is a schematic view of the structure of the diffuser of the present invention.
Fig. 6 is a schematic structural view of the fin plate of the present invention.
Fig. 7 is a schematic diagram of the structure of the water-cooling tube of the present invention.
In the figure: 1. a smoke collecting hood; 2. a fire-proof cover; 3. a diffuser; 4. an air duct; 5. an access pipe; 6. a slideway; 7. a small-sized air compressor; 8. a mounting frame; 9. a water-cooled tube; 10. a fin plate.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings, which are only used for illustrating the technical solutions of the present invention and are not limited.
The fireproof assembly is mainly aimed at improving the smoke collecting hood in the field of blast furnace smelting, and the gas collecting hood and a smelting furnace have a certain distance, because aluminum-iron alloy needs to stir a melt and other operation activities in the smelting process, so that the iron-aluminum alloy is uniformly stirred; therefore, the distance between the fume collecting hood and the smelting furnace is about two meters, which is the reason of poor effect of the fume collecting hood during fume exhaust; sometimes causing some dense smoke to overflow from the smoke filter; the flue gas mainly contains substances such as acid gas, smoke dust, heavy metals and the like, and the overflow can influence the health of operators in a plant area; the fume collecting hood therefore has a great influence on the interior of the plant.
For a clear understanding of the technical solutions of the present application, the fire protection assembly provided in the present application will be described in detail below with reference to specific embodiments and accompanying drawings.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example one
The alloy consisting of iron and aluminum produced by our company mainly has the main function of being used as a deoxidizer during steel smelting; when the aluminum-iron alloy is smelted in a smelting furnace, organic matters contained in the added secondary aluminum raw material are rapidly and incompletely combusted to generate a large amount of dense smoke which overflows from the furnace mouth and is dispersed outwards, the existing smoke collection mode is that the overflowed smoke is collected through a fixed smoke collection cover 1, and a distance of about two meters is formed between the smoke collection cover 1 and the smelting furnace, as shown in figure 1, the application provides a fireproof assembly for smelting the aluminum-iron alloy, which comprises a smoke collection cover 1, wherein the smoke collection cover 1 is connected with a main exhaust pipe through an exhaust pipe and is used for collecting the smoke generated in smelting the iron-aluminum alloy; the outer surface of the smoke collecting hood 1 is provided with a partition device for partitioning the overflow of smoke, an external high-pressure air source is introduced into the partition device to generate an air curtain to surround the smelting furnace, namely, the outer edge of the gas collecting hood is provided with the partition device to generate an air curtain wall between the gas collecting hood and the smelting furnace; because the flue gas that ferro-aluminum produced is upwards excessive passively, the wind curtain wall can produce the wall to the flue gas flow direction, and collection petticoat pipe 1 communicates with the exhaust pipe, and its self also has the suction effect, guarantees that the flue gas from collection petticoat pipe 1 flows into subsequent clean system and discharges after handling.
The fume collecting hood 1 adopts a pyramid structure, but can also be square, round and other structures which are convenient for collecting the air; in order to prevent the material from turning over and igniting to burn into the smoke collecting hood 1 during feeding, a fireproof hood 2 is arranged at the inlet below the smoke collecting hood 1, and the fireproof hood 2 is preferably made of asbestos.
The partition device comprises a divergent cover 3 and an air duct 4 which are fixed on the outer edge of the smoke collecting cover 1; the divergent cover 3 is an inverted cover body structure and is fixed with the outer edge of the smoke collecting cover 1 in a sealing way; the external profile of the diverging hood 3 may be the same as the structural profile of the fume collecting hood 1; or the structure outline of the smoke collecting cover 1 can be different; the air duct 4 is annularly arranged at the outer edge of the upper side of the divergent cover 3; a plurality of branch pipes are formed at the lower side of the gas guide pipe 4, and the gas guide pipe 4 is communicated with a cavity formed by the divergence cover 3 and the smoke collecting cover 1 through the branch pipes; the gas-guide tube 4 is connected with an external gas source through an access tube 5; during operation, in external air supply let in compressed air through access pipe 5 in the air duct 4, discharge between cover 3 and the collection petticoat pipe 1 with compressed air after the air duct 4 reposition of redundant personnel, to the production air curtain around the smelting furnace, the excessive of separation flue gas.
Example two
As shown in fig. 4, in the fire-proof cover 2 of the present application, the fire-proof cover 2 has a support frame body on which an asbestos net is fixed; the fireproof hood 2 is fixed at an inlet below the smoke collecting hood 1 through a support frame body in a welding mode (or through a locking piece);
in addition, another installation mode of the fireproof hood 2 is that two opposite slide ways 6 are fixed at the inlet below the smoke collecting hood 1, and the fireproof hood 2 is in inserted fit with the slide ways 6; such mounting means is convenient to dismantle, is convenient for maintain and overhaul in the collection petticoat pipe 1.
EXAMPLE III
As shown in fig. 3, the compressed air is generated by a small air compressor 7; the small air compressor 7 is fixed on the outer edge of the diffusion cover 3, and the air outlet end of the small air compressor is connected with the access pipe 5; the small air compressor 7 is controlled to start and stop through the control system, namely when the control system controls the smoke collecting hood 1 to start, the control system controls the small air compressor 7 to start synchronously; the small-size air compressor 7 produces compressed air and lets in the air duct 4 through inserting pipe 5, and the air duct 4 shunts the back and disperses compressed air and discharge between cover 3 and the collection petticoat pipe 1, to the smelting furnace produce the air curtain all around, the excessive of separation flue gas.
In addition, as shown in fig. 5, the compressed air can also be directly connected with the compressed air pipe in the field through the access pipe 5; in order to realize close-range control, a hand valve is arranged at one end of the access pipe 5 close to the diverging cover 3, and the access and the closing of compressed air can be controlled through the hand valve; of course, the end of the access pipe 5 close to the diverging cover 3 can also be provided with an electromagnetic valve; the individual inlet flows are controlled by a control system.
Example four
The main pollutants generated in the dense smoke overflowing from the furnace comprise acidic gas, smoke dust, heavy metal and other substances and carry a large amount of heat; as shown in fig. 2, the fume collecting hood 1 is connected with the main exhaust pipe through an exhaust pipe and is connected to the purification system through the main exhaust pipe; the high temperature can cause the accelerated aging of the filtering and adsorbing structure in the purification system, so that a water cooling system is connected into the smoke collecting hood 1; as shown in fig. 6-7, the water cooling system comprises a mounting frame 8 and a water cooling pipe 9; the mounting rack 8 is a square frame structure and is fixed in the inner cavity of the smoke collecting hood 1; a plurality of fin plates 10 are arranged in the middle of the mounting rack 8, the water-cooling pipes 9 are inserted on the fin plates 10, and the inlets and outlets of the water-cooling pipes 9 are connected with an external water circulation system; the water cooling pipe 9 can be of a serpentine structure or a zigzag structure.
EXAMPLE five
The application also discloses a flue gas purification system, which comprises the fireproof assembly of any one of the embodiments; the fire-proof assembly is connected with the main exhaust pipe through the exhaust pipe, and then is connected into the purification system through the main exhaust pipe, so that after toxic substances and smoke dust are removed and absorbed, the toxic substances and the smoke dust are discharged after meeting the national emission requirements.
The above-mentioned fixing methods, if not separately described, all use the means of common technique of those skilled in the art, such as welding, nesting, or screw fixing.
Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described above, or equivalent changes and modifications can be made to some of the technical features of the embodiments described above, and any changes, equivalents, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides an ferro-aluminum alloy is smelted and is used fire prevention subassembly, includes collection petticoat pipe (1) through exhaust pipe and main exhaust pipe, its characterized in that, and the surface of collection petticoat pipe (1) is provided with a wall device that cuts off the excessive wall device of flue gas, and during operation, external high-pressure gas source lets in the wall device, produces the wind curtain.
2. A fire prevention assembly for ferroaluminum smelting according to claim 1, wherein the partition means includes a diverging hood (3) and a gas duct (4) fixed to an outer edge of the fume collecting hood (1); the divergent cover (3) is fixed with the outer edge of the smoke collecting cover (1) in a sealing way; the air duct (4) is arranged at the outer edge of the upper side of the divergence cover (3); a plurality of branch pipes are formed at the lower side of the gas guide pipe (4), and the gas guide pipe (4) is communicated with a cavity formed by the divergence cover (3) and the smoke collecting cover (1) through the branch pipes; the air duct (4) is connected with an external air source through an access pipe (5).
3. Fire prevention module for ferroaluminum smelting according to claim 2, characterized in that a mini-compressor (7) is fixed to the outer edge of the diffuser (3), and the outlet end of the mini-compressor is connected to the inlet pipe (5).
4. Fire prevention assembly for ferroaluminium smelting according to claim 2, characterised in that the access pipe (5) is provided with a control valve near the end of the diverging hood (3).
5. The fire prevention assembly for aluminum-iron alloy smelting according to claim 4, wherein the control valve is any one of a manual valve and a solenoid valve.
6. A fire prevention assembly for ferroaluminum smelting according to claim 1, wherein a fire prevention hood (2) is provided at an inlet below the smoke collection hood (1).
7. A fire prevention assembly for aluminum-iron alloy smelting according to claim 6, characterized in that two opposite slideways (6) are fixed at the inlet below the fume collecting hood (1), and the fire prevention hood (2) is in inserted fit with the slideways (6).
8. A fire prevention assembly for ferroaluminum smelting according to claim 1, wherein the fume collecting hood (1) is internally provided with a water cooling system.
9. The fire prevention assembly for aluminum-iron alloy smelting according to claim 8, wherein the water cooling system comprises a mounting frame (8) and a water cooling pipe (9); a plurality of fin plates (10) are arranged in the middle of the mounting rack (8), and the water cooling pipes (9) are inserted on the fin plates (10).
10. A flue gas cleaning system, characterized in that it comprises a fire protection assembly according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121551591.3U CN215177026U (en) | 2021-07-09 | 2021-07-09 | Ferroaluminum is smelted and is used fire prevention subassembly and gas cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121551591.3U CN215177026U (en) | 2021-07-09 | 2021-07-09 | Ferroaluminum is smelted and is used fire prevention subassembly and gas cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215177026U true CN215177026U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121551591.3U Active CN215177026U (en) | 2021-07-09 | 2021-07-09 | Ferroaluminum is smelted and is used fire prevention subassembly and gas cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215177026U (en) |
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2021
- 2021-07-09 CN CN202121551591.3U patent/CN215177026U/en active Active
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