CN102899430B - Multipoint stereoscopic ignition device and method for blast furnace blow-in and blast furnace containing the device - Google Patents
Multipoint stereoscopic ignition device and method for blast furnace blow-in and blast furnace containing the device Download PDFInfo
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- CN102899430B CN102899430B CN201210347625.6A CN201210347625A CN102899430B CN 102899430 B CN102899430 B CN 102899430B CN 201210347625 A CN201210347625 A CN 201210347625A CN 102899430 B CN102899430 B CN 102899430B
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- cupola well
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Abstract
The invention provides a multipoint stereoscopic ignition device and method for blast furnace blow-in and a blast furnace containing the device. The method comprises simultaneous ignition in a tuyere region, a central region of a hearth and an edge region of the hearth. The device comprises a first air supply pipe and a second air supply pipe. The first air supply pipe comprises a first upper end, a first pipe body and a first lower end, which are mutually connected; the first upper end communicates with a first tuyere; and the first lower end communicates with the edge region of the hearth. The second air supply pipe comprises a second upper end, a second pipe body and a second lower end, which are mutually connected; the second upper end communicates with a second tuyere; and the second lower end communicates with the central region of the hearth. The invention can realize multipoint stereoscopic ignition blow-in, so as to realize homogeneous combustion in the whole hearth after blow-in ignition of the blast furnace, and realize uniform distribution of initial gas flow on radial and horizontal directions. The invention can avoid eccentricity of charge columns, and are conducive to recovery of blast furnace conditions and rapid realization of production efficiency.
Description
Technical field
The present invention relates to blast furnace opening technical field, more particularly, relate to a kind of for the Multi-point three-dimensional portfire of blast furnace opening, a kind of Multi-point three-dimensional ignition method of blast furnace opening and a kind of blast furnace comprising this Multi-point three-dimensional portfire.
Background technology
At present, blast furnace opening igniting all adopts the mode of air port direct ignition to carry out.But such mode can affect the combustionvelocity of cokes in hearth, simultaneously because each air port air intake resistance is different, blast-furnace smelting is caused to depart from center.Particularly for the blast furnace only having an iron mouth, after igniting bias, cause smelting off centering, blast furnace can be caused can not to reach good technico-economical comparison (such as, utilization coefficient is low), time serious, also likely affect smooth operation of furnace.
Summary of the invention
The object of the invention is to solve in above-mentioned prior art at least one in the multiple deficiencies existed.
An aspect of of the present present invention provides a kind of Multi-point three-dimensional ignition method of blast furnace opening.Described Multi-point three-dimensional ignition method comprise simultaneously in region, air port, cupola well central zone, cupola well fringe region light a fire.
In an exemplary embodiment of Multi-point three-dimensional ignition method of the present invention, described Multi-point three-dimensional ignition method can by aweather port area, cupola well central zone, cupola well fringe region provide hot blast to realize simultaneously.
In an exemplary embodiment of Multi-point three-dimensional ignition method of the present invention, the iron mouth place that described Multi-point three-dimensional ignition method also can be included in blast furnace arranges gas export control, to derive the coal gas that igniting produces.
In an exemplary embodiment of Multi-point three-dimensional ignition method of the present invention, described cupola well central zone is positioned at different height from region, described air port, and described cupola well fringe region is positioned at different height from region, described air port.
Another aspect provides a kind of Multi-point three-dimensional portfire for blast furnace opening.Described Multi-point three-dimensional portfire comprises the first air-supply duct, the second air-supply duct, wherein, described first air-supply duct is made up of interconnective first upper end, the first pipe shaft and the first lower end, and the first upper end is communicated with the first air port, and the first lower end is communicated with cupola well fringe region; Described second air-supply duct is made up of interconnective second upper end, the second pipe shaft and the second lower end, and the second upper end is communicated with the second air port, and the second lower end is communicated with cupola well central zone.
In an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention, described Multi-point three-dimensional portfire also can comprise the gas export control at the iron mouth place being arranged on blast furnace, and cupola well is in communication with the outside the coal gas of deriving igniting generation by described gas export control.
In an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention, described first air port and the second air port are different air port.
In an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention, the quantity of described first air-supply duct can be two or more, the quantity of described second air-supply duct can be two or more, and the quantity sum of the first air-supply duct and the second air-supply duct is less than the inlet number of blast furnace.
In an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention, described first lower end and the second lower end can be toroidal shape.
Another aspect of the present invention provides a kind of blast furnace.Described blast furnace comprises cupola well, be arranged on air port on cupola well and iron mouth and as above for the Multi-point three-dimensional portfire of blast furnace opening.
Compared with prior art, beneficial effect of the present invention comprises: can realize Multi-point three-dimensional igniting blow-on, thus can make to realize whole cupola well homogenous combustion after blast furnace opening igniting, blast furnace original coal air-flow is distributed diametrically, transversely all uniformly, the phenomenon of stock column bias is there will not be to occur, be conducive to the recovery of conditions of blast furnace, be conducive to reaching product fast and reach effect.
Accompanying drawing explanation
By the description carried out below in conjunction with accompanying drawing, above and other object of the present invention and feature will become apparent, wherein:
Fig. 1 shows the sectional view of the gas export control of an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention;
Fig. 2 shows the sectional view of the first air-supply duct of an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention;
Fig. 3 shows the sectional view of the second air-supply duct of an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention.
Description of reference numerals:
1-gas export control, 2-iron mouth, 3-iron mouth modular tile, 4-chimney, 5-first air-supply duct, 6-second air-supply duct.
Embodiment
Hereinafter, will the Multi-point three-dimensional portfire of blast furnace opening of the present invention and method be described in conjunction with exemplary embodiment in detail and comprise the blast furnace of this device.
In an exemplary embodiment of the Multi-point three-dimensional ignition method of blast furnace opening of the present invention, described Multi-point three-dimensional ignition method comprise simultaneously in region, air port, cupola well central zone, cupola well fringe region light a fire, to realize carrying out multiple spot, three-dimensional igniting in blast furnace hearth.In the present invention, described cupola well central zone refer to the axis of cupola well be axis, the cylindrical region that formed for radius with the length (such as, the half of cupola well radius) being less than cupola well radius; Described cupola well fringe region refers to the region outside the above-mentioned cupola well central zone of the removing of cupola well.
Such as, in above-mentioned exemplary embodiment, described Multi-point three-dimensional ignition method is by aweather port area, cupola well central zone, cupola well fringe region provide hot blast to realize simultaneously.When the natural temperature of hot blast temperature higher than coke, igniting can be realized.
Preferably, in one exemplary embodiment of the present invention, the iron mouth place that described Multi-point three-dimensional ignition method also can be included in blast furnace arranges gas export control, to derive the coal gas that igniting produces, thus can obtain better ignition results.
Preferably, in one exemplary embodiment of the present invention, in order to ensure good three-dimensional ignition results, described cupola well central zone is positioned at different height from region, described air port, and described cupola well fringe region is positioned at different height from region, described air port.
In an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention, described Multi-point three-dimensional portfire comprises the first air-supply duct, the second air-supply duct.Wherein, described first air-supply duct is made up of interconnective first upper end, the first pipe shaft and the first lower end, and the first upper end is communicated with the first air port, and the first lower end is communicated with cupola well fringe region; Described second air-supply duct is made up of interconnective second upper end, the second pipe shaft and the second lower end, and the second upper end is communicated with the second air port, and the second lower end is communicated with cupola well central zone.Here, described first air port and the second air port can be same air port, also can be different air port.When the first air port and the second air port are different air port (that is, the first air-supply duct is communicated with different air ports respectively from the second air-supply duct), the first air-supply duct and the second air-supply duct can obtain more hot blast rate, thus can obtain better ignition results.
Preferably, in one exemplary embodiment of the present invention, described Multi-point three-dimensional portfire also can comprise the iron mouth place gas export control being arranged on blast furnace, and cupola well is in communication with the outside the coal gas of deriving igniting generation by described gas export control, thus can obtain better ignition results.
Preferably, in one exemplary embodiment of the present invention, the quantity of described first air-supply duct is two or more, and the quantity of described second air-supply duct is two or more, thus can carry out multi-point spark in cupola well; The quantity sum of the first air-supply duct and the second air-supply duct is less than the inlet number of blast furnace, thus the air port be not communicated with the second air-supply duct with the first air-supply duct also can realize lighting a fire.
Preferably, in one exemplary embodiment of the present invention, described first lower end and the second lower end are hydraucone shape, suitably can expand the ignition area of the first air-supply duct and the second air-supply duct like this, thus improve ignition results further.
In one exemplary embodiment of the present invention, described first pipe shaft can along hearth wall to downward-extension; Described second pipe shaft can oliquely downward extend, so that the lower end of the second air-supply duct arrives cupola well central zone, preferably, the angle of the short transverse of the second pipe shaft and blast furnace is 30 ~ 60 °.
In addition, another aspect of the present invention additionally provides a kind of blast furnace.Described blast furnace comprises cupola well, be arranged on air port on cupola well and iron mouth and the above-mentioned Multi-point three-dimensional portfire for blast furnace opening.
One exemplary embodiment of the present invention are specifically described below in conjunction with accompanying drawing.
Fig. 1 shows the sectional view of the gas export control of an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention.Fig. 2 shows the sectional view of the first air-supply duct of an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention.Fig. 3 shows the sectional view of the second air-supply duct of an exemplary embodiment of the Multi-point three-dimensional portfire for blast furnace opening of the present invention.
As shown in Figure 1, in one exemplary embodiment of the present invention, the gas export control 1 of Multi-point three-dimensional portfire is arranged on iron mouth 2 place of blast furnace, and cupola well is in communication with the outside the coal gas of deriving igniting generation by gas export control 1, thus can obtain better ignition results.Gas export control 1 can have tortuous shape, and its externally ported place also can be provided with chimney 4, derives effect to obtain good gas.Iron mouth modular tile 3 is for the formation of iron mouth 2.
As shown in Figure 2, the direction of the upper end edge basic horizontal of the first air-supply duct 5 has predetermined length, so that be connected with air port; The pipe shaft of the first air-supply duct 5 is with along hearth wall (such as, with from the horizontal by the direction of 85 °) to downward-extension, and this pipe shaft has predetermined length (such as, can be 3000mm ~ 3900mm), concrete length can change according to the specification of cupola well and the different depths expecting arrival; The lower end of the first air-supply duct 5 is hydraucone shape.The aperture of the first air-supply duct 5 can be slightly less than the aperture in air port.Such as, oven pipes can be adopted as the first air-supply duct.In addition, for the ease of installing and fixing, the upper end of the first air-supply duct can comprise two sections, front and back, wherein, the aperture of front end is slightly larger than the aperture in air port, and the aperture of back segment is slightly less than the aperture in air port, leading portion is positioned at outside, air port, and leading portion is connected with the mode of back segment by welding.
As shown in Figure 3, the direction of the upper end edge basic horizontal of the second air-supply duct 6 has predetermined length, so that be connected with air port; The pipe shaft of the second air-supply duct 6 oliquely downward extends with the direction of the angle at 45 ° of the short transverse with blast furnace, and this pipe shaft has predetermined length (such as, can be 4000mm ~ 5400mm), concrete length can change according to the specification of cupola well and the different depths expecting arrival; The lower end of the second air-supply duct 6 is hydraucone shape.The aperture of the second air-supply duct 6 can be slightly less than the aperture in air port.Such as, oven pipes can be adopted as the second air-supply duct.In addition, for the ease of installing and fixing, the front end of the second air-supply duct can comprise two sections, front and back, wherein, the aperture of front end is slightly larger than the aperture in air port, and the aperture of back segment is slightly less than the aperture in air port, leading portion is positioned at outside, air port, and leading portion is connected with the mode of back segment by welding.
In sum, the present invention can realize carrying out Multi-point three-dimensional igniting in blast furnace hearth, thus can make to realize whole cupola well homogenous combustion after blast furnace opening igniting, blast furnace original coal air-flow is distributed diametrically, transversely all uniformly, the phenomenon of stock column bias is there will not be to occur, be conducive to the recovery of conditions of blast furnace, be conducive to reaching product fast and reach effect.
Although describe the present invention with exemplary embodiment by reference to the accompanying drawings above, those of ordinary skill in the art should be clear, when not departing from the spirit and scope of claim, can carry out various amendment to above-described embodiment.
Claims (5)
1. the Multi-point three-dimensional ignition method of a blast furnace opening, it is characterized in that, described Multi-point three-dimensional ignition method comprises simultaneously in region, air port, cupola well central zone, cupola well fringe region is lighted a fire, and the iron mouth place that described Multi-point three-dimensional ignition method is also included in blast furnace arranges gas export control, to derive the coal gas that igniting produces, described cupola well central zone is positioned at different height from region, described air port, described cupola well fringe region is positioned at different height from region, described air port, wherein, described cupola well central zone refers to the axis of cupola well as axis, with the cylindrical region that the half of cupola well radius is formed for radius, described cupola well fringe region refers to the region outside the described cupola well central zone of the removing of cupola well.
2. the Multi-point three-dimensional ignition method of blast furnace opening according to claim 1, is characterized in that, described Multi-point three-dimensional ignition method is by aweather port area, cupola well central zone, cupola well fringe region provide hot blast to realize simultaneously.
3. for a Multi-point three-dimensional portfire for blast furnace opening, it is characterized in that, described Multi-point three-dimensional portfire comprises the first air-supply duct, the second air-supply duct, wherein,
Described first air-supply duct is made up of interconnective first upper end, the first pipe shaft and the first lower end, and the first upper end is communicated with the first air port, and the first lower end is communicated with cupola well fringe region;
Described second air-supply duct is made up of interconnective second upper end, the second pipe shaft and the second lower end, and the second upper end is communicated with the second air port, and the second lower end is communicated with cupola well central zone,
Described Multi-point three-dimensional portfire also comprises the gas export control at the iron mouth place being arranged on blast furnace, and cupola well is in communication with the outside the coal gas of deriving igniting generation by described gas export control, and,
The quantity of described first air-supply duct is two or more, and the quantity of described second air-supply duct is two or more, and the quantity sum of the first air-supply duct and the second air-supply duct is less than the inlet number of blast furnace, wherein,
Described cupola well central zone refer to the axis of cupola well be axis, the cylindrical region that formed for radius with the half of cupola well radius, described cupola well fringe region refers to the region outside the described cupola well central zone of the removing of cupola well, and described first air port and the second air port are same air port or are different air port.
4. the Multi-point three-dimensional portfire for blast furnace opening according to claim 3, is characterized in that, described first lower end and the second lower end are hydraucone shape.
5. a blast furnace, comprise cupola well and the air port be arranged on cupola well and Tie Kou, it is characterized in that, described blast furnace also comprises the Multi-point three-dimensional portfire for blast furnace opening as described in claim 3 or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347625.6A CN102899430B (en) | 2012-09-19 | 2012-09-19 | Multipoint stereoscopic ignition device and method for blast furnace blow-in and blast furnace containing the device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347625.6A CN102899430B (en) | 2012-09-19 | 2012-09-19 | Multipoint stereoscopic ignition device and method for blast furnace blow-in and blast furnace containing the device |
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| Publication Number | Publication Date |
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| CN102899430A CN102899430A (en) | 2013-01-30 |
| CN102899430B true CN102899430B (en) | 2014-12-17 |
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| CN201210347625.6A Expired - Fee Related CN102899430B (en) | 2012-09-19 | 2012-09-19 | Multipoint stereoscopic ignition device and method for blast furnace blow-in and blast furnace containing the device |
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| CN105907910B (en) * | 2016-06-12 | 2023-06-09 | 新疆八一钢铁股份有限公司 | European smelting furnace baking device |
| CN107779532B (en) * | 2017-11-15 | 2019-10-11 | 攀钢集团西昌钢钒有限公司 | A kind of blast furnace opening device and method |
| CN112981026B (en) * | 2021-02-23 | 2022-05-17 | 山西太钢不锈钢股份有限公司 | Arrangement method of blast furnace drying hot air guide pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103119A (en) * | 1986-04-28 | 1987-09-30 | 韩文琦 | Blast furnace process to downdraft |
| CN1301871A (en) * | 1999-12-30 | 2001-07-04 | 承德钢铁集团有限公司 | Furnace opening method for preheating furnace shaft of blast farnace |
| CN1361290A (en) * | 2000-12-29 | 2002-07-31 | 攀枝花新钢钒股份有限公司炼铁厂 | Blast furnace opening process |
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2012
- 2012-09-19 CN CN201210347625.6A patent/CN102899430B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103119A (en) * | 1986-04-28 | 1987-09-30 | 韩文琦 | Blast furnace process to downdraft |
| CN1301871A (en) * | 1999-12-30 | 2001-07-04 | 承德钢铁集团有限公司 | Furnace opening method for preheating furnace shaft of blast farnace |
| CN1361290A (en) * | 2000-12-29 | 2002-07-31 | 攀枝花新钢钒股份有限公司炼铁厂 | Blast furnace opening process |
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Granted publication date: 20141217 Termination date: 20180919 |