CN216838038U - High-temperature-resistant plugging device for preventing smoke dust from overflowing in blast furnace slag discharge groove - Google Patents
High-temperature-resistant plugging device for preventing smoke dust from overflowing in blast furnace slag discharge groove Download PDFInfo
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- CN216838038U CN216838038U CN202123068033.4U CN202123068033U CN216838038U CN 216838038 U CN216838038 U CN 216838038U CN 202123068033 U CN202123068033 U CN 202123068033U CN 216838038 U CN216838038 U CN 216838038U
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- slag runner
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Abstract
A high temperature resistant plugging device for preventing smoke dust from overflowing in a blast furnace slag runner belongs to the technical field of blast furnace iron slag discharge dust removal equipment and is used for preventing dust from overflowing when slag is discharged from the blast furnace slag runner. The technical scheme is as follows: two plugging walls are respectively vertically arranged on the lower slag runner platforms at two sides of the lower slag runner along the lower slag runner, one end of each plugging wall is connected with the lower plugging plate of the cover plate below the slag runner cover plate of the furnace front platform, the other end of each plugging wall is connected with the granulation tower, plugging top covers are laid at the upper ends of the opposite plugging walls at two sides of the lower slag runner, and dust removal pipelines are arranged on the plugging top covers. The utility model discloses simple structure, convenient to use can seal down the slag runner totally, seals the slag smoke and dust in plugging device's region, and dust removal pipeline discharges the flue gas fast, has thoroughly solved down excessive problem of slag runner smoke and dust, has promoted the blast furnace clean production level, has avoided environmental pollution, has satisfied the environmental protection requirement.
Description
Technical Field
The utility model relates to a high temperature resistant plugging device for preventing dust overflow when slag from being discharged from a slag channel of a blast furnace, which belongs to the technical field of blast furnace slag iron discharge dust removal equipment.
Background
The blast furnace production equipment generally comprises a feeding device, an air supply device, a cooling device, a coal gas recovery and dust removal device and a slag iron discharge device. The blast furnace production is a production process with particularly strong continuity, and in the production process, furnace materials are contacted and reacted in the blast furnace from top to bottom and coal gas is contacted and reacted from bottom to top. Charging furnace materials into the furnace from the furnace top according to a certain proportion, heating air into the furnace from a blast opening to 1000-degree hot air of 1300 degrees by a hot blast furnace, burning coke in the furnace materials in front of the blast opening to generate high-temperature reducing gas, heating the furnace materials which slowly descend in the ascending process in the furnace, reducing oxides in iron ore to metallic iron, heating unreduced substances to form slag, realizing slag-iron separation, gathering the slag-iron in a hearth, and regularly discharging the slag and molten iron from the hearth to form a continuous operation process.
After being separated from molten iron in a main iron runner, blast furnace slag enters a granulation tower through a slag runner, is quickly crushed, quenched and granulated by pressurized high-speed water flow sprayed out of a granulation box arranged below the end part of the slag runner to form granular water slag, a slag-water mixture generated by granulation flows into a distributor and a buffer tank in a dewatering rotary drum from the granulation tower through a connecting piece, enters the rotary dewatering rotary drum capable of automatically adjusting the rotating speed to separate the slag from the water, and the water slag is transported to a slag yard for loading and transporting by a belt passing through the center of the rotary drum.
The blast furnace slag iron discharge is an important link of blast furnace production, a large-scale blast furnace slag is discharged for about 12 times every day, the slag discharging time is about 2 hours every time, the slag discharging time is almost continuous all day, 1 kilogram of smoke dust is generated in each ton of slag in the slag discharging period on average, and the environmental pollution is serious. When the blast furnace slag is discharged, a slag runner of the platform in front of the furnace is provided with a slag runner cover plate and a dust removal pipeline for flue gas recovery, but when liquid slag with the temperature as high as 1000 ℃ flows to a slag runner section of the slag runner platform, the original design of the slag runner is not provided with a sealing device, a large amount of smoke and dust overflow when the slag runner section passes through slag, so that the current environment-friendly requirement can not be met under the condition that the slag runner section is not provided with a plugging device, and the slag runner section is necessary to be subjected to high-temperature-resistant plugging transformation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a slag runner prevents excessive high temperature resistant plugging device of smoke and dust under blast furnace is provided, this kind of high temperature resistant plugging device can seal the slag runner completely under 1000 ℃ high temperature condition, thoroughly seals the smoke and dust in the region, and the rethread sets up dust removal pipeline and discharges the flue gas away, can avoid taking place slag runner smoke and dust excessive phenomenon down effectively.
The technical scheme for solving the technical problems is as follows:
the utility model provides a high temperature resistant plugging device that slag runner prevents excessive smoke and dust under blast furnace, it includes the shutoff wall, shutoff top cap, dust removal pipeline, two shutoff walls are installed on the lower slag runner platform of the both sides of lower slag runner along lower slag runner is perpendicular respectively, the one end of shutoff wall is connected with the apron lower shutoff board of the slag runner apron below of original stokehold platform, the other end is connected with granulation tower, the shutoff top cap is laid to the relative shutoff wall upper end of lower slag runner both sides, install dust removal pipeline on the shutoff top cap.
Above-mentioned slag runner prevents excessive high temperature resistant plugging device of smoke and dust under blast furnace, blocking wall and shutoff top cap are a plurality of cuboid plane sheet frame structures respectively, and every cuboid plane sheet frame is cuboid plane frame by the angle steel welding, and two liang of sides of frame are covered by steel sheet welding respectively, fill resistant material in the sheet frame inner chamber that the steel sheet encloses, and the plane sheet frame structure segmentation of a plurality of blocking walls and shutoff top cap is connected and is constituteed holistic plugging device.
Above-mentioned blast furnace slag runner prevents excessive high temperature resistant plugging device of smoke and dust, be provided with a plurality of observation holes on the shutoff top cap, a plurality of observation holes are arranged along the length direction of shutoff top cap in proper order, install the observation hole apron on the observation hole, and one side and the observation hole of observation hole apron are hinged joint.
The utility model has the advantages that:
the blocking wall and the blocking top cover which are arranged above the lower slag runner of the utility model can completely block the upper part of the lower slag runner, thereby avoiding the smoke dust overflow of the lower slag runner; the structure of the blocking wall and the blocking top cover is filled with refractory materials, and the high-temperature resistant material has high-temperature resistance; the dust removal pipeline enables the closed space to form negative pressure, so that smoke dust in the slag discharging ditch can be effectively discharged; the observation hole can conveniently observe the slag flow condition, and the slag poking operation can be carried out by opening the observation hole cover plate, so that the slag is prevented from blocking the plugging device.
The utility model discloses simple structure, convenient to use can seal down the slag runner totally, seals the slag smoke and dust in plugging device's region, and dust removal pipeline discharges the flue gas fast, has thoroughly solved down excessive problem of slag runner smoke and dust, has promoted the blast furnace clean production level, has avoided environmental pollution, has satisfied the environmental protection requirement.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a top view of fig. 1.
The figures are labeled as follows: the device comprises a furnace front platform 1, a slag runner cover plate 2, a cover plate lower plugging plate 3, a slag runner 4, a slag runner platform 5, a plugging wall 6, a plugging top cover 7, a dust removal pipeline 8, an observation hole cover plate 9 and a granulation tower 10.
Detailed Description
The utility model discloses constitute by shutoff wall 6, shutoff top cap 7, dust removal pipeline 8.
The figure shows that the blocking wall 6 and the blocking top cover 7 are respectively of a plurality of cuboid plane plate frame structures, each cuboid plane plate frame is a cuboid plane frame formed by welding angle steel, the two sides of the frame are respectively covered by welding steel plates, refractory materials are filled in the plate frame inner cavity formed by the steel plates, and the plane plate frame structures of the blocking wall 6 and the blocking top cover 7 are connected in a segmented mode to form the whole blocking device. The blocking wall 6 and the blocking top cover 7 are combined by adopting a steel structure and a refractory material, have sufficient strength and high temperature resistance, can normally work when 1000 ℃ high-temperature slag passes through, and cannot be damaged.
The figure shows that two plugging walls 6 are respectively vertically arranged on the lower slag runner platforms 5 at two sides of the lower slag runner 4 along the lower slag runner 4, and the steel structures of the lower slag runner platforms 5 and the plugging walls 6 are welded and fixed. One end of the blocking wall 6 is connected with a lower blocking plate 3 of a cover plate below a slag runner cover plate 2 of the original furnace front platform 1, the other end is connected with a granulating tower 10, and blocking top covers 7 are laid at the upper ends of the opposite blocking walls 6 at the two sides of the lower slag runner 4. The upper part of the lower slag runner 4 is completely blocked by the blocking wall 6 and the blocking top cover 7, slag smoke is blocked in the area of the blocking device, and the situation that the smoke of the lower slag runner 4 overflows is avoided.
The figure shows that a dust removal pipe 8 is mounted on the plugging top cover 7. The dust removal pipeline 8 enables the closed space to form negative pressure, smoke dust in the slag runner 4 can be effectively discharged, and the problem that the smoke dust in the slag runner 4 overflows is thoroughly solved.
The figure shows that a plurality of observation holes are formed in the plugging top cover 7 and are sequentially arranged along the length direction of the plugging top cover 7, an observation hole cover plate 9 is installed on each observation hole, and one side of each observation hole cover plate 9 is connected with each observation hole through a hinge. The observation hole can conveniently observe the slag flow condition, and the slag poking operation can be carried out by opening the observation hole cover plate 9, so that the slag is prevented from blocking the plugging device.
The utility model discloses an embodiment as follows:
the length of the plugging wall 6 is 5000mm, the height is 500mm, and the thickness is 200 mm;
the length of the plugging top cover 7 is 5000mm, the width is 1500mm, and the thickness is 120 mm;
the diameter of the dust removal pipeline 8 is 150mm, and the length is 4000 mm;
the length of the observation hole cover plate 9 is 300mm, and the width thereof is 300 mm.
Claims (3)
1. The utility model provides a blast furnace lower slag runner prevents excessive high temperature resistant plugging device of smoke and dust which characterized in that: the slag runner dedusting system comprises blocking walls (6), blocking top covers (7) and dedusting pipelines (8), wherein the two blocking walls (6) are respectively vertically installed on lower slag runner platforms (5) on two sides of the lower slag runner (4) along the lower slag runner (4), one end of each blocking wall (6) is connected with a lower blocking plate (3) of a cover plate below a slag runner cover plate (2) of a furnace front platform (1), the other end of each blocking wall is connected with a granulation tower (10), the blocking top covers (7) are laid on the upper ends of the opposite blocking walls (6) on two sides of the lower slag runner (4), and the dedusting pipelines (8) are installed on the blocking top covers (7).
2. The high-temperature resistant blocking device for preventing the smoke from overflowing of the blast furnace lower slag runner according to claim 1, is characterized in that: blocking wall (6) and shutoff top cap (7) are a plurality of cuboid plane sheet frame structures respectively, and every cuboid plane sheet frame is cuboid plane frame by the angle steel welding, and two liang of sides of frame are covered by the steel sheet welding respectively, fill resistant material in the sheet frame inner chamber that the steel sheet encloses, and the plane sheet frame structure segmentation of a plurality of blocking walls (6) and shutoff top cap (7) is connected and is constituteed holistic plugging device.
3. The high-temperature resistant blocking device for preventing the smoke from overflowing of the blast furnace lower slag runner according to claim 1, is characterized in that: be provided with a plurality of observation holes on shutoff top cap (7), a plurality of observation holes are arranged along the length direction of shutoff top cap (7) in proper order, install observation hole apron (9) on the observation hole, and one side and the observation hole of observation hole apron (9) are hinged joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123068033.4U CN216838038U (en) | 2021-12-08 | 2021-12-08 | High-temperature-resistant plugging device for preventing smoke dust from overflowing in blast furnace slag discharge groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123068033.4U CN216838038U (en) | 2021-12-08 | 2021-12-08 | High-temperature-resistant plugging device for preventing smoke dust from overflowing in blast furnace slag discharge groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216838038U true CN216838038U (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123068033.4U Active CN216838038U (en) | 2021-12-08 | 2021-12-08 | High-temperature-resistant plugging device for preventing smoke dust from overflowing in blast furnace slag discharge groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216838038U (en) |
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2021
- 2021-12-08 CN CN202123068033.4U patent/CN216838038U/en active Active
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