CN214276541U

CN214276541U - Top suction type dust removal smoke hood for slag removal and slag discharge station under steel converter

Info

Publication number: CN214276541U
Application number: CN202120045614.7U
Authority: CN
Inventors: 王冠; 庄剑恒; 李�根; 劳国威; 白万通; 庞德生
Original assignee: Zhanjiang Mcc Environmental Protection Operation Management Co ltd
Current assignee: Zhanjiang Mcc Environmental Protection Operation Management Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-09-24
Anticipated expiration: 2031-01-08

Abstract

The utility model discloses a top suction type dust removal petticoat pipe for slag removal and slag discharging station under steelmaking converter, including the petticoat pipe body, the lower part of petticoat pipe body is equipped with the opening of rectangle, and its upper portion is equipped with and upwards is the rectangle caping that narrows down gradually along the rectangle opening, petticoat pipe body top side is connected through the I-steel of hoist and steelmaking converter's stokehold platform bottom, the bottom side of petticoat pipe body covers slag removal and the slag discharging station under the steelmaking converter, the right side of petticoat pipe body is equipped with square air outlet through square pipeline, and the left side is equipped with circular air outlet through circular pipeline, and horizontal brace pipe of horizontally connected with is then at the bottom, the brace pipe flushes with the bottom of petticoat pipe body, the bottom inboard of petticoat pipe body evenly is equipped with little fog dust suppression device through steel-frame construction. The utility model discloses effectively solve the converter under the forklift and carry out the scarfing cinder, unload the secondary raise dust of sediment in-process and the not good scheduling problem of dust removal effect of slagging tap, improve dust recovery efficiency to reach the effect that improves the factory building operation environment.

Description

Top suction type dust removal smoke hood for slag removal and slag discharge station under steel converter

Technical Field

The utility model relates to a dust collector, in particular to a top suction type dust removal smoke hood for slag removal and slag discharge stations under a steel converter.

Background

The fume hood used by the existing steelmaking converter is in a side-draft mode, only aims at dedusting a slag tapping station, but does not effectively recover dust generated by a slag cleaning station, and the side-draft fume hood has the defects of small volume, small coverage range, small air volume and the like. In the slag removal process of the steelmaking converter, the forklift carries out slag removal and slag unloading, a large amount of smoke and dust can be generated, the dust is relatively dry and large in generation amount under the high-temperature environment, meanwhile, the air passing through the converter in the east-west direction and the north-south direction is relatively large, the dust cannot be rapidly recovered through the side-suction type smoke hood, the air volume generated in the side-suction type smoke hood cannot meet the requirement of slag removal station operation, and the dust is dissipated into a factory building to influence the factory building environment. Along with the acceleration of the production rhythm of Zhanjiang steel mills, the corresponding frequency of slag discharging and slag removing is increased, so that the existing side-draft smoke hood cannot meet the production requirements of slag removing and slag discharging stations at the same time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a top suction type dust removal petticoat pipe for slag removal and slag discharging station under steelmaking converter effectively solves the converter and carries out the secondary raise dust of scarfing cinder, the in-process of unloading and the not good scheduling problem of the dust removal effect of slagging tap down, improves dust recovery efficiency to reach the effect that improves factory building operation environment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a top suction type dust removal petticoat pipe for slag removal and station of slagging tap under steelmaking converter, includes the petticoat pipe body, the lower part of petticoat pipe body is equipped with the opening of rectangle, and its upper portion is equipped with and upwards is the rectangle caping that narrows down gradually along the rectangle opening, petticoat pipe body top side is connected through the I-steel of hoist and steelmaking converter's stokehold platform bottom, the bottom side of petticoat pipe body covers the slag removal and the station of slagging tap under the steelmaking converter, the right side of petticoat pipe body is equipped with square air outlet through square pipeline, and the left side is equipped with circular air outlet through circular pipeline, and then horizontally connect has horizontal stay tube at the end, the stay tube flushes with the bottom of petticoat pipe body, the bottom inboard of petticoat pipe body evenly is equipped with little fog dust suppression device through steel-frame construction.

The lifting appliance comprises a first lifting rod, a second lifting rod, a third lifting rod and a fourth lifting rod, wherein the first lifting rod, the second lifting rod, the third lifting rod and the fourth lifting rod are perpendicular and evenly arranged, the first lifting rod, the second lifting rod, the third lifting rod and the fourth lifting rod are welded with a smoke hood body and a converter front platform bottom I-shaped steel respectively through lifting lugs at the upper end and the lower end, and the first lifting rod, the second lifting rod, the third lifting rod and the fourth lifting rod are welded with the lifting lugs.

The square air outlet that the petticoat pipe body passes through square pipeline is connected with the stove below of converter secondary dust pelletizing system, square pipeline is welding and flange butt joint respectively with petticoat pipe body, converter secondary dust pelletizing system's stove below.

The circular air outlet of the circular pipeline is connected with the lower furnace circular tube of the converter secondary dust removal system, and the circular pipeline is in butt joint with the smoke hood body and the lower furnace circular tube of the converter secondary dust removal system through welding and flanges.

The micro-fog dust suppression device comprises a gas storage tank, a booster pump, a water vapor distribution device and a water source, wherein the gas storage tank, the booster pump, the water vapor distribution device and the water source are connected through a gas circuit in sequence, and the gas storage tank, the booster pump and the water vapor distribution device are connected with a spray head through a gas circuit and a water circuit respectively.

The spray head of the micro-fog dust suppression device uniformly surrounds the smoke hood body for a circle.

The spray head is a universal joint spray head.

The utility model has the advantages that:

the utility model effectively solves the problems of poor secondary dust raising and slag discharging and dust removing effects and the like in the process of removing slag and unloading slag of the forklift under the converter, improves the dust recovery efficiency, and achieves the effect of improving the workshop operation environment; the dust catcher can catch dust in the slag removing and discharging process of the steel furnace, and the harmful effects of the dust on the plant environment and field personnel caused by scattering and irregular ash emission are avoided.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a left side view structure diagram of the present invention;

fig. 4 is a schematic diagram of the internal structure of the present invention.

In the figure: 1 petticoat pipe body, 2 circular pipelines, 3 square pipelines, 4 prop pipes, 5 first jib, 6 second jibs, 7 third jibs, 8 fourth jibs, 9 little fog dust suppression device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, 2, 3 and 4, a top-suction type dedusting smoke hood for slag removal and slag discharge stations under a steelmaking converter comprises a smoke hood body 1, wherein the lower part of the smoke hood body 1 is provided with a rectangular opening, the upper part of the smoke hood body is provided with a rectangular cover top which is gradually narrowed along the rectangular opening, the top side of the smoke hood body 1 is connected with an I-steel at the bottom of a furnace front platform of the steelmaking converter through a lifting appliance, the bottom side of the smoke hood body 1 covers the slag removal and slag discharge stations under the steelmaking converter, so that the smoke hood body 1 is integrated with the slag discharge stations and the slag removal stations into a whole, the smoke hood body 1 has the characteristics of large volume and wide coverage range, the right side of the smoke hood body 1 is provided with a square air outlet through a square pipeline 3, the left side is provided with a circular air outlet through a circular pipeline 2, the bottom is horizontally connected with a horizontal supporting pipe 4, the supporting pipe 4, the inner side of the bottom of the smoke hood body 1 is evenly provided with a micro-fog dust suppression device 9 through a steel frame structure.

The lifting appliance comprises a first lifting rod 5, a second lifting rod 6, a third lifting rod 7 and a fourth lifting rod 8, wherein the first lifting rod 5, the second lifting rod 6, the third lifting rod 7 and the fourth lifting rod 8 are vertically and uniformly arranged, so that the stress of the smoke hood body 1 reaches the balanced purpose, the first lifting rod 5, the second lifting rod 6, the third lifting rod 7 and the fourth lifting rod 8 are welded with the bottom I-steel of the smoke hood body 1 and a converter front platform respectively through lifting lugs at the upper end and the lower end, the first lifting rod 5, the second lifting rod 6, the third lifting rod 7 and the fourth lifting rod 8 are welded with the lifting lugs, and meanwhile, the lifting lugs are connected with the first lifting rod 5, the second lifting rod 6, the third lifting rod 7 and the fourth lifting rod 8 through screws and nuts, so that the double fixation effect is achieved.

The square air outlet that petticoat pipe body 1 passes through square pipeline 3 is connected with converter secondary dust pelletizing system's stove below pipe, square pipeline 3 is respectively for welding and flange butt joint with petticoat pipe body 1, converter secondary dust pelletizing system's stove below pipe.

The circular air outlet of the circular pipeline 2 is connected with the lower furnace circular tube of the converter secondary dust removal system through the smoke hood body 1, the lower furnace circular tube of the converter secondary dust removal system is welded with the circular pipeline 2, the lower furnace circular tube of the converter secondary dust removal system is welded with the smoke hood body 1, and the lower furnace circular tube of the converter secondary dust removal system is in flange butt joint with an original phi 1220 pipeline and enters the lower furnace circular tube secondary dust removal system.

Micro-fog dust suppression device 9, including gas holder, booster pump, aqueous vapor distributor and the water connection's that loops through the gas circuit connection water source, gas holder, booster pump, steam distributor pass through gas circuit and water connection shower nozzle respectively, micro-fog dust suppression device 9 is conventional technique, this micro-fog dust suppression device 9 only need reach and combine the spun water smoke with the dust particle in the air, form the agglomeration of dust and water smoke to receive the action of gravity to subside down, in order to reach the purpose of eliminating the dust can.

The spray head of the micro-fog dust suppression device 9 uniformly surrounds the smoke hood body 1 circle.

The spray head is a universal joint spray head, and the spray direction can be changed.

The utility model changes the left phi 1220 old pipeline into 2200 x 2000 square pipeline 3 and enlarges the size of the smoke hood body 1 (7200mm x 8000mm) for removing slag under the furnace synchronously. Replace original side-draught type cover body with the top-draught type petticoat pipe, there is cable vestibule pipeline route on the right side of petticoat pipe body 1 not smooth and easy, maintains original circular pipeline 2 in right side unchangeable. A dust suppression universal joint spray head is arranged on a steel structure on the inner side surface of the bottom of the smoke hood body 1, a gas circuit and a water circuit are sequentially connected to a gas storage tank, a booster pump and a water-gas distribution device, and a plurality of fine water mist (50-150 mu m) are formed by the spray head and combined with dust particles in the air, so that the dust particles are continuously condensed and enlarged to be settled or recovered by the smoke hood.

The utility model discloses an useful part lies in, under not increasing the total amount of wind of system, allots the amount of wind again, increases to 350000 cubic meters per hour by original design 150000 cubic meters per hour. Meanwhile, the micro-fog dust suppression device 9 is additionally arranged, the micro-fog dust suppression device 9 is suppressed at the moment of dust explosion, and a small amount of overflowing dust is recycled by the dust removal smoke hood. Through on-site observation, the effect of the modified dust removal smoke hood is remarkable, the scattered dust of the slag removal station under the furnace is recovered by nearly 100%, the environment of an operation area is obviously improved, and the dust removal effect is highly approved by the industry.

The utility model discloses a petticoat pipe body 1 is applicable to and installs in scarfing cinder and the station top of slagging tap, and is as an organic whole with scarfing cinder and the station collection of slagging tap, can reach efficient dust removal effect, and this top suction type dust removal petticoat pipe also is 350 tons converter initial adoption, belongs to the steel mill initiative in the country.

Claims

1. A top suction type dust removal petticoat pipe that is used for slag removal and slag discharging station under steelmaking converter, its characterized in that: including petticoat pipe body (1), the lower part of petticoat pipe body (1) is equipped with the opening of rectangle, and its upper portion is equipped with and upwards is the rectangle caping that narrows down gradually along the rectangle opening, petticoat pipe body (1) top side is connected through the I-steel of hoist and steelmaking converter's stokehold platform bottom, the bottom side of petticoat pipe body (1) covers the scarfing cinder under the steelmaking converter and the station of slagging tap, the right side of petticoat pipe body (1) is equipped with square air outlet through square pipeline (3), and the left side is equipped with circular air outlet through circular pipeline (2), and then horizontally connect has horizontal prop pipe (4) at the end, prop pipe (4) and flush with the bottom of petticoat pipe body (1), the bottom inboard of petticoat pipe body (1) evenly is equipped with little fog dust suppression device (9) through steel frame construction.

2. The top draft dust extraction hood according to claim 1, wherein: the lifting appliance comprises a first lifting rod (5), a second lifting rod (6), a third lifting rod (7) and a fourth lifting rod (8), wherein the first lifting rod (5), the second lifting rod (6), the third lifting rod (7) and the fourth lifting rod (8) are perpendicular and evenly arranged, the first lifting rod (5), the second lifting rod (6), the third lifting rod (7) and the fourth lifting rod (8) are welded with a smoke hood body (1) and a converter front platform bottom I-steel through lifting lugs at the upper end and the lower end respectively, and the first lifting rod (5), the second lifting rod (6), the third lifting rod (7) and the fourth lifting rod (8) are welded with the lifting lugs.

3. The top draft dust extraction hood according to claim 1, wherein: the square air outlet that petticoat pipe body (1) passed through square pipeline (3) is connected with converter secondary dust pelletizing system's stove below pipe, square pipeline (3) are welding and flange butt joint respectively with petticoat pipe body (1), converter secondary dust pelletizing system's stove below pipe.

4. The top draft dust extraction hood according to claim 1, wherein: circular air outlet and converter secondary dust pelletizing system's the pipe connection under circular air outlet through circular pipeline (2) petticoat pipe body (1), circular pipeline (2) and petticoat pipe body (1), converter secondary dust pelletizing system's the pipe is welding and flange butt joint respectively under the stove.

5. The top draft dust extraction hood according to claim 1, wherein: the micro-fog dust suppression device (9) comprises a gas storage tank, a booster pump, a water-vapor distribution device and a water source, wherein the gas storage tank, the booster pump, the water-vapor distribution device and the water source are connected through a gas circuit in sequence, and the gas storage tank, the booster pump and the water-vapor distribution device are connected with a spray head through a gas circuit and a water circuit respectively.

6. The top draft dust extraction hood according to claim 5, wherein: the spray head of the micro-fog dust suppression device (9) uniformly surrounds the smoke hood body (1) for a circle.

7. The top draft type dust extraction hood according to claim 5 or 6, wherein: the spray head is a universal joint spray head.