CN104774989A - Blast furnace iron mouth dedusting cover - Google Patents
Blast furnace iron mouth dedusting cover Download PDFInfo
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- CN104774989A CN104774989A CN201510198656.3A CN201510198656A CN104774989A CN 104774989 A CN104774989 A CN 104774989A CN 201510198656 A CN201510198656 A CN 201510198656A CN 104774989 A CN104774989 A CN 104774989A
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Abstract
The invention discloses a blast furnace iron mouth dedusting cover comprising a dust collecting cover body (1), wherein an air suction opening (2) is formed in the top wall of the dust collecting cover body (1); a smoke guide plate (3) is horizontally arranged below the top wall of the dust collecting cover body (1) and is dead against the air suction opening (2); a transverse smoke dust passage (4) is formed between the smoke guide plate (3) and the top wall of the dust collecting cover body (1), and a longitudinal smoke dust passage (5) is formed between the smoke guide plate (3) and the side wall of the dust collecting cover body (1); the longitudinal smoke dust passage (5), the transverse smoke dust passage (4) and the air suction opening (2) are in fluid communication with one another in sequence; and the smoke dust at a blast furnace iron mouth can sequentially flow through the longitudinal smoke dust passage (5) and the transverse smoke dust passage (4) and then is discharged from the air suction opening (2) on the dust collecting cover body (1). The blast furnace iron mouth dedusting cover disclosed by the invention is convenient for formation of a venturi effect and can accelerate the speed of sucking away smoke dust, so that the smoke dust can be sucked more quickly and cleanly.
Description
Technical field
The present invention relates to a kind of blast furnace ironmaking dust-removal system, particularly relate to a kind of iron mouth top with smoke deflector and absorb dust hood.
Background technology
Since 20 century 70s, iron-smelting blast furnace keeps the large-scale development, and the production operation of casting house there occurs fundamental change, and along with the prolongation of tapping duration, the smoke contamination time also extends, and the fume amount distributed is large, and soot dust granule is thin, wide to surrounding environment influence scope.If do not taked effective measure of control, not only contaminate environment, and will seriously hinder operation and the safety of casting house, for the normal operation of equipment, instrument, be also great threat.Such as: large blast furnace taps a blast furnace, when slagging tap, the fume amount molten iron per ton that molten iron trough and iron ladle surface are distributed is about 400 ~ 700g, and dust contained flue gas concentration is at 150 ~ 1500mg/m
3between; SiO when tapping a blast furnace in flue dust
2content is about 0.8% ~ 1.2%, molten iron CO content average out to per ton 0.7 ~ 1.15kg; When tapping a blast furnace, the CO content of work point is 125 ~ 250mg/m
3; The sour gas scale of construction that slag chute, slag runner surface molten iron per ton distributes is 120 ~ 170g, and slag chute, slag runner side is average is 30mg/m containing sulphur concentration
3.
Current traditional blast furnace taphole dedusting is mainly divided into top to absorb dirt, top suction in conjunction with side draught dedusting etc.But above-mentioned dedusting form mostly has the following disadvantages: the dust excluding hood of top suction type dedusting is placed on Tie Kou top, due to the impact of casthouse equipment, dust excluding hood is positioned at casthouse equipment top, and dust excluding hood body is very high, causes dirt ash capture zone too high, affects dust removing effects; Especially at dust excluding hood edge, have a large amount of ash-laden gas and diffuse out, and due to the impact of casthouse equipment, the method reducing dust excluding hood or strengthen dust excluding hood cannot be adopted again to improve dust removing effects.
Summary of the invention
The object of the present invention is to provide a kind of can the blast furnace taphole dust excluding hood of smoking dedusting fast and efficiently.
For achieving the above object, the concrete technical scheme of a kind of blast furnace taphole dust excluding hood of the present invention is:
A kind of blast furnace taphole dust excluding hood, comprise control of dust cover body, the roof of control of dust cover body is formed with air suction inlet, roof lower horizontal is provided with smoke deflector, smoke deflector and air suction inlet are just to setting, and be formed with horizontal smoke dust duct between the roof of smoke deflector and control of dust cover body, and be formed with longitudinal smoke dust duct between the sidewall of control of dust cover body, longitudinal smoke dust duct, horizontal smoke dust duct, air suction inlet successively fluid are communicated with, and are discharged after the flue dust at blast furnace taphole place can flow through longitudinal smoke dust duct, horizontal smoke dust duct in turn by the air suction inlet on control of dust cover body.
Compared with existing cleaning apparatus, the advantage of blast furnace taphole dust excluding hood of the present invention is:
1) smoke deflector in blast furnace taphole dust excluding hood of the present invention is in order to form wall attachment effect, and flue dust flowing evenly, crossfire does not occur;
2) smoke deflector in blast furnace taphole dust excluding hood of the present invention and the horizontal smoke dust duct between control of dust cover body and longitudinal smoke dust duct are all passage bores that the passage bore of inlet end is greater than exit end, be convenient to form Venturi effect, accelerate flue dust siphoned away by blower fan, thus flue dust inhale sooner, cleaner.
Accompanying drawing explanation
Fig. 1 is the structural representation of blast furnace taphole dust excluding hood of the present invention.
Embodiment
In order to better understand object of the present invention, structure and function, below in conjunction with accompanying drawing, further detailed description is done to a kind of blast furnace taphole dust excluding hood of the present invention.
As shown in Figure 1, blast furnace taphole dust excluding hood of the present invention comprises control of dust cover body 1, the roof of control of dust cover body 1 is formed with air suction inlet 2, and roof lower horizontal is provided with smoke deflector 3, and smoke deflector 3 and air suction inlet 2 are just to setting.Wherein, smoke deflector 3 is fixedly installed on control of dust cover body 1 by the mode of bolt or welding, and smoke deflector 3 can be plane or curved, but for the ease of manufacturing, is set to plane in the present embodiment by smoke deflector 3.In addition, in order to adapt to the high-temperature smoke that iron mouth top is inhaled, the inside of control of dust cover body 1 and smoke deflector 3 all can be provided with high temperature resistant spray material.
Further, smoke deflector 3 and control of dust cover body 1 are arranged for interval.Wherein, horizontal smoke dust duct 4 is formed between the roof of smoke deflector 3 and control of dust cover body 1, and be formed with longitudinal smoke dust duct 5 between the sidewall of control of dust cover body 1, and longitudinal smoke dust duct 5, horizontal smoke dust duct 4, air suction inlet 2 successively fluid be communicated with, the flue dust at blast furnace taphole place is discharged by the air suction inlet 2 on control of dust cover body 1 after can flowing through longitudinal smoke dust duct 5, horizontal smoke dust duct 4 in turn.In addition, the area near longitudinal smoke dust duct 5 of blast furnace taphole side can be greater than the area of longitudinal smoke dust duct 5 of other sides, to improve efficiency of dust collection.
Further, the passage bore of horizontal smoke dust duct 4 is reduced to exit end gradually by inlet end, and wherein, the inlet end of horizontal smoke dust duct 4 is the one end connected with longitudinal smoke dust duct 5, and exit end is the one end connected with air suction inlet 2.In addition, the passage bore of longitudinal smoke dust duct 5 is also reduced gradually to exit end by inlet end, and wherein, the inlet end of longitudinal smoke dust duct 5 is lower end, and exit end is upper end.Thus, the surrounding of smoke deflector 3 can form the same Venturi effect of chimney, accelerates fume gases and enters into air suction inlet 2 on control of dust cover body 1, fume gases is inhaled sooner, cleaner.
Further, the passage bore of longitudinal smoke dust duct 5 inlet end can be set to the passage bore being less than horizontal smoke dust duct 4 inlet end, to strengthen Venturi effect, accelerates dust suction.In addition, as shown in Figure 1, for ensureing smoking dust removing effects, inclination angle, the vertical section a of the horizontal smoke dust duct 4 in the present embodiment can be set to be less than 35 degree, is preferably 10 degree.
Further, air suction inlet 2 is positioned at the roof central position of control of dust cover body 1, and the plate face area being positioned at the smoke deflector 3 below air suction inlet 2 is greater than the air port area of air suction inlet 2.In addition, the bottom surface of smoke deflector 3 and the side wall lower ends face of control of dust cover body 1 in the same plane.
The principle of work of blast furnace taphole dust excluding hood of the present invention is: the fume gases at blast furnace taphole place can run into smoke deflector 3 in the process risen, form Koln immediately and reach effect (i.e. wall attachment effect), fume gases is creeped along the attached wall of smoke deflector 3, the flowing of fume gases like this becomes even, fume gases also flows by certain direction simultaneously, can not crossfire be there is, serve the effect of rectification.
Subsequently, dust cognition enters into longitudinal smoke dust duct 5 and horizontal smoke dust duct 4 successively, because horizontal smoke dust duct 4 and the longitudinal smoke dust duct 5 passage bore that is all inlet ends is greater than the passage bore of exit end, therefore the same Venturi effect of chimney can be formed around smoke deflector 3, accelerate fume gases and enter into air suction inlet 2 on control of dust cover body 1, fume gases is inhaled sooner, cleaner.
Further describe invention has been by specific embodiment above; but it should be understood that; here concrete description; should not be construed as the restriction to the spirit and scope of the invention; one of ordinary skilled in the art to the various amendments that above-described embodiment is made, belongs to the scope that the present invention protects after reading this specification.
Claims (8)
1. a blast furnace taphole dust excluding hood, it is characterized in that, comprise control of dust cover body (1), the roof of control of dust cover body (1) is formed with air suction inlet (2), roof lower horizontal is provided with smoke deflector (3), smoke deflector (3) and air suction inlet (2) are just to setting, and be formed with horizontal smoke dust duct (4) between the roof of smoke deflector (3) and control of dust cover body (1), and be formed with longitudinal smoke dust duct (5) between the sidewall of control of dust cover body (1), longitudinal smoke dust duct (5), horizontal smoke dust duct (4), air suction inlet (2) successively fluid is communicated with, the flue dust at blast furnace taphole place can flow through longitudinal smoke dust duct (5) in turn, discharged by the air suction inlet (2) on control of dust cover body (1) after horizontal smoke dust duct (4).
2. blast furnace taphole dust excluding hood according to claim 1, is characterized in that, the passage bore of horizontal smoke dust duct (4) is reduced to exit end gradually by inlet end.
3. blast furnace taphole dust excluding hood according to claim 2, is characterized in that, inclination angle, the vertical section (a) of horizontal smoke dust duct (4) is less than 35 degree.
4. blast furnace taphole dust excluding hood according to claim 3, is characterized in that, inclination angle, the vertical section (a) of horizontal smoke dust duct (4) is 10 degree.
5. blast furnace taphole dust excluding hood according to claim 1 and 2, is characterized in that, the passage bore of longitudinal smoke dust duct (5) is reduced to exit end gradually by inlet end.
6. blast furnace taphole dust excluding hood according to claim 5, is characterized in that, the passage bore of longitudinal smoke dust duct (5) inlet end is less than the passage bore of horizontal smoke dust duct (4) inlet end.
7. blast furnace taphole dust excluding hood according to claim 1, it is characterized in that, air suction inlet (2) is positioned at the roof central position of control of dust cover body (1), and the plate face area being positioned at the smoke deflector (3) of below, air suction inlet (2) is greater than the air port area of air suction inlet (2).
8. blast furnace taphole dust excluding hood according to claim 1, is characterized in that, the bottom surface of smoke deflector (3) and the side wall lower ends face of control of dust cover body (1) in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198656.3A CN104774989B (en) | 2015-04-24 | 2015-04-24 | Blast furnace iron mouth dedusting cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198656.3A CN104774989B (en) | 2015-04-24 | 2015-04-24 | Blast furnace iron mouth dedusting cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104774989A true CN104774989A (en) | 2015-07-15 |
| CN104774989B CN104774989B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510198656.3A Active CN104774989B (en) | 2015-04-24 | 2015-04-24 | Blast furnace iron mouth dedusting cover |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244515A (en) * | 1985-08-19 | 1987-02-26 | Nippon Kokan Kk <Nkk> | Dust collecting method for tap hole of blast furnace |
| JPH07188720A (en) * | 1993-12-27 | 1995-07-25 | Nkk Corp | Method for collecting dust in iron tapping hole of blast furnace |
| CN201028553Y (en) * | 2007-03-22 | 2008-02-27 | 中钢集团天澄环保科技股份有限公司 | Rotating protection type top absorbing cover |
| CN102586522A (en) * | 2012-02-29 | 2012-07-18 | 中冶南方工程技术有限公司 | Dust hood for blast furnace tap hole |
| CN203077417U (en) * | 2013-03-02 | 2013-07-24 | 沈超 | Dust hood of plank machining machine for producing density boards |
| CN203356164U (en) * | 2013-05-16 | 2013-12-25 | 溧阳市正翔精密机械有限公司 | Peripheral dust suction hood and dust collector provided with same |
| CN103924010A (en) * | 2013-01-15 | 2014-07-16 | 宝山钢铁股份有限公司 | Venturi type dust removal device for processing and discharging steelmaking roller slag |
-
2015
- 2015-04-24 CN CN201510198656.3A patent/CN104774989B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244515A (en) * | 1985-08-19 | 1987-02-26 | Nippon Kokan Kk <Nkk> | Dust collecting method for tap hole of blast furnace |
| JPH07188720A (en) * | 1993-12-27 | 1995-07-25 | Nkk Corp | Method for collecting dust in iron tapping hole of blast furnace |
| CN201028553Y (en) * | 2007-03-22 | 2008-02-27 | 中钢集团天澄环保科技股份有限公司 | Rotating protection type top absorbing cover |
| CN102586522A (en) * | 2012-02-29 | 2012-07-18 | 中冶南方工程技术有限公司 | Dust hood for blast furnace tap hole |
| CN103924010A (en) * | 2013-01-15 | 2014-07-16 | 宝山钢铁股份有限公司 | Venturi type dust removal device for processing and discharging steelmaking roller slag |
| CN203077417U (en) * | 2013-03-02 | 2013-07-24 | 沈超 | Dust hood of plank machining machine for producing density boards |
| CN203356164U (en) * | 2013-05-16 | 2013-12-25 | 溧阳市正翔精密机械有限公司 | Peripheral dust suction hood and dust collector provided with same |
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| Publication number | Publication date |
|---|---|
| CN104774989B (en) | 2017-05-17 |
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| CB02 | Change of applicant information |
Address after: 27 Shandong City, Qingdao Province Economic and Technological Development Zone, Ali Shan Road, No. 27, unit 1 Applicant after: Zhongye Dongfang Engineering Techn Co., Ltd. Address before: 014010 the Inner Mongolia Autonomous Region Baotou City Queensland Steel Street No. 45 Applicant before: Zhongye Dongfang Engineering Techn Co., Ltd. |
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