CN102899430A - 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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- CN102899430A CN102899430A CN2012103476256A CN201210347625A CN102899430A CN 102899430 A CN102899430 A CN 102899430A CN 2012103476256 A CN2012103476256 A CN 2012103476256A CN 201210347625 A CN201210347625 A CN 201210347625A CN 102899430 A CN102899430 A CN 102899430A
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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 the blast furnace opening technical field, more particularly, relate to the three-dimensional ignition method of multiple spot and a kind of blast furnace that comprises the three-dimensional portfire of this multiple spot of the three-dimensional portfire of a kind of multiple spot for blast furnace opening, a kind of blast furnace opening.
Background technology
At present, the blast furnace opening igniting all adopts the mode of air port direct ignition to carry out.Yet such mode can affect the combustionvelocity of cokes in hearth, because each air port air intake resistance is different, causes blast-furnace smelting to depart from the center simultaneously.Particularly for the blast furnace that only has an iron mouth, after igniting off-centre, cause the smelting off centering, can cause blast furnace can not reach good technico-economical comparison (for example, utilization coefficient is low etc.), also might affect smooth operation of furnace when serious.
Summary of the invention
The object of the invention is to solve at least one in a plurality of deficiencies that exist in the above-mentioned prior art.
An aspect of of the present present invention provides a kind of multiple spot of blast furnace opening three-dimensional ignition method.The three-dimensional ignition method of described multiple spot comprises lights a fire at zone, air port, cupola well central zone, cupola well fringe region simultaneously.
In an exemplary embodiment of the three-dimensional ignition method of multiple spot of the present invention, the three-dimensional ignition method of described multiple spot can be by aweather port area, cupola well central zone, cupola well fringe region provide hot blast to realize simultaneously.
In an exemplary embodiment of the three-dimensional ignition method of multiple spot of the present invention, the iron mouth place that the three-dimensional ignition method of described multiple spot also can be included in blast furnace arranges gas export control, the coal gas that produces to derive igniting.
In an exemplary embodiment of the three-dimensional ignition method of multiple spot of the present invention, described cupola well central zone is positioned at different height from zone, described air port, and described cupola well fringe region is positioned at different height from zone, described air port.
Another aspect of the present invention provides a kind of multiple spot for blast furnace opening three-dimensional portfire.The three-dimensional portfire of described multiple spot comprises the first air-supply duct, the second air-supply duct, wherein, described the first air-supply duct is made of interconnective the 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 the cupola well fringe region; Described the second air-supply duct is made of interconnective the 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 the cupola well central zone.
An exemplary embodiment in the three-dimensional portfire of the multiple spot for blast furnace opening of the present invention, the three-dimensional portfire of described multiple spot also can comprise the gas export control at the iron mouth place that is arranged on blast furnace, and described gas export control is in communication with the outside to derive the coal gas that igniting produces with cupola well.
In an exemplary embodiment of the three-dimensional portfire of the multiple spot for blast furnace opening of the present invention, described the first air port is different air ports with the second air port.
An exemplary embodiment in the three-dimensional portfire of the multiple spot for blast furnace opening of the present invention, the quantity of described the first air-supply duct can be two or more, the quantity of described the 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 three-dimensional portfire of the multiple spot for blast furnace opening of the present invention, described the first lower end and the second lower end can be the toroidal shape.
Another aspect of the present invention provides a kind of blast furnace.Described blast furnace comprises cupola well, is arranged on air port and iron mouth and the aforesaid three-dimensional portfire of multiple spot for blast furnace opening on the cupola well.
Compared with prior art, beneficial effect of the present invention comprises: can realize the three-dimensional igniting of multiple spot blow-on, thereby can be so that after the blast furnace opening igniting, realize that whole cupola well evenly burns, make blast furnace original coal air-flow diametrically, transversely all distribute uniformly, the phenomenon that stock column off-centre can not occur occurs, be conducive to the recovery of conditions of blast furnace, be conducive to reach fast product and reach effect.
Description of drawings
By the description of carrying out below in conjunction with accompanying drawing, above and other purpose of the present invention and characteristics will become apparent, wherein:
Fig. 1 shows the sectional view of gas export control of an exemplary embodiment of the three-dimensional portfire of the multiple spot 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 three-dimensional portfire of the multiple spot 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 three-dimensional portfire of the multiple spot 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-the first air-supply duct, 6-the second air-supply duct.
Embodiment
Hereinafter, describe multiple spot three-dimensional portfire and the method for blast furnace opening of the present invention in detail in connection with exemplary embodiment and comprise the blast furnace of this device.
In an exemplary embodiment of the three-dimensional ignition method of the multiple spot of blast furnace opening of the present invention, the three-dimensional ignition method of described multiple spot comprises lights a fire at zone, air port, cupola well central zone, cupola well fringe region simultaneously, carries out multiple spot, three-dimensional igniting in the blast furnace hearth to be implemented in.In the present invention, described cupola well central zone refers to take the axis of cupola well to be axis, cylindrical region to form for radius less than the length of cupola well radius (for example, cupola well radius half); Described cupola well fringe region refers to the zone outside the above-mentioned cupola well of removing of the cupola well central zone.
For example, in above-mentioned exemplary embodiment, the three-dimensional ignition method of described multiple spot can be by aweather port area, cupola well central zone, cupola well fringe region provide hot blast to realize simultaneously.When hot blast temperature is higher than the natural temperature of coke, can realize igniting.
Preferably, in one exemplary embodiment of the present invention, the iron mouth place that the three-dimensional ignition method of described multiple spot also can be included in blast furnace arranges gas export control, the coal gas that produces to derive igniting, thus can access better igniting effect.
Preferably, in one exemplary embodiment of the present invention, in order to ensure good solid igniting effect, described cupola well central zone is positioned at different height from zone, described air port, and described cupola well fringe region is positioned at different height from zone, described air port.
In an exemplary embodiment of the three-dimensional portfire of the multiple spot for blast furnace opening of the present invention, the three-dimensional portfire of described multiple spot comprises the first air-supply duct, the second air-supply duct.Wherein, described the first air-supply duct is made of interconnective the 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 the cupola well fringe region; Described the second air-supply duct is made of interconnective the 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 the cupola well central zone.Here, described the first air port and the second air port can be same air port, also can be different air ports.When the first air port is different air port with the second air port (, the first air-supply duct and the second air-supply duct are communicated with different air port respectively), the first air-supply duct and the second air-supply duct can obtain more hot blast rate, thereby can access better igniting effect.
Preferably, in one exemplary embodiment of the present invention, the three-dimensional portfire of described multiple spot also can comprise the iron mouth place gas export control that is arranged on blast furnace, and described gas export control is in communication with the outside cupola well to derive the coal gas that igniting produces, thereby can access better igniting effect.
Preferably, in one exemplary embodiment of the present invention, the quantity of described the first air-supply duct is two or more, and the quantity of described the second air-supply duct is two or more, thereby 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, thereby igniting also can be realized in the air port that is not communicated with the first air-supply duct and the second air-supply duct.
Preferably, in one exemplary embodiment of the present invention, described the first lower end and the second lower end are the hydraucone shape, can suitably enlarge like this ignition area of the first air-supply duct and the second air-supply duct, thereby further improve the igniting effect.
In one exemplary embodiment of the present invention, described the first pipe shaft can be along hearth wall to downward-extension; Described the second pipe shaft can extend to oblique below, so that the lower end of the second air-supply duct arrives the 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 also provides a kind of blast furnace.Described blast furnace comprises cupola well, is arranged on air port and iron mouth and the above-mentioned three-dimensional portfire of multiple spot for blast furnace opening on the cupola well.
Specifically describe one exemplary embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 shows the sectional view of gas export control of an exemplary embodiment of the three-dimensional portfire of the multiple spot 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 three-dimensional portfire of the multiple spot 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 three-dimensional portfire of the multiple spot 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 the three-dimensional portfire of multiple spot is arranged on iron mouth 2 places of blast furnace, and gas export control 1 is in communication with the outside cupola well to derive the coal gas that igniting produces, thereby can access better igniting effect.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 used to form 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 the air port; The pipe shaft of the first air-supply duct 5 is with along hearth wall (for example, with the direction from the horizontal by 85 °) to downward-extension, and this pipe shaft (for example has predetermined length, can be for 3000mm～3900mm), the different depths that concrete length can arrive according to specification and the expectation of cupola well changes; The lower end of the first air-supply duct 5 is the hydraucone shape.The aperture of the first air-supply duct 5 can be slightly less than the aperture in air port.For example, can adopt oven pipes 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 of 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 the outside, air port, leading portion be connected with back segment by the welding mode connect.
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 the air port; The pipe shaft of the second air-supply duct 6 is to extend to oblique below with the direction of the angle at 45 ° of the short transverse of blast furnace, and this pipe shaft (for example has predetermined length, can be for 4000mm～5400mm), the different depths that concrete length can arrive according to specification and the expectation of cupola well changes; The lower end of the second air-supply duct 6 is the hydraucone shape.The aperture of the second air-supply duct 6 can be slightly less than the aperture in air port.For example, can adopt oven pipes 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 of 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 the outside, air port, leading portion be connected with back segment by the welding mode connect.
In sum, the present invention can be implemented in and carry out the three-dimensional igniting of multiple spot in the blast furnace hearth, thereby can be so that after the blast furnace opening igniting, realize that whole cupola well evenly burns, make blast furnace original coal air-flow diametrically, transversely all distribute uniformly, the phenomenon that stock column off-centre can not occur occurs, be conducive to the recovery of conditions of blast furnace, be conducive to reach fast product and reach effect.
Although the above has described the present invention with exemplary embodiment by reference to the accompanying drawings, those of ordinary skills should be clear, in the situation of the spirit and scope that do not break away from claim, can carry out various modifications to above-described embodiment.
Claims (10)
1. the three-dimensional ignition method of the multiple spot of a blast furnace opening is characterized in that, the three-dimensional ignition method of described multiple spot comprises lights a fire at zone, air port, cupola well central zone, cupola well fringe region simultaneously.
2. the three-dimensional ignition method of the multiple spot of blast furnace opening according to claim 1 is characterized in that, the three-dimensional ignition method of described multiple spot is by aweather port area, cupola well central zone, cupola well fringe region provide hot blast to realize simultaneously.
3. the three-dimensional ignition method of the multiple spot of blast furnace opening according to claim 2 is characterized in that, the iron mouth place that the three-dimensional ignition method of described multiple spot also is included in blast furnace arranges gas export control, the coal gas that produces to derive igniting.
4. the three-dimensional ignition method of the multiple spot of blast furnace opening according to claim 1 is characterized in that described cupola well central zone is positioned at different height from zone, described air port, and described cupola well fringe region is positioned at different height from zone, described air port.
5. the three-dimensional portfire of multiple spot that is used for blast furnace opening is characterized in that the three-dimensional portfire of described multiple spot comprises the first air-supply duct, the second air-supply duct, wherein,
Described the first air-supply duct is made of interconnective the 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 the cupola well fringe region;
Described the second air-supply duct is made of interconnective the 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 the cupola well central zone.
6. the three-dimensional portfire of the multiple spot for blast furnace opening according to claim 5, it is characterized in that, the three-dimensional portfire of described multiple spot also comprises the gas export control at the iron mouth place that is arranged on blast furnace, and described gas export control is in communication with the outside to derive the coal gas that igniting produces with cupola well.
7. the three-dimensional portfire of the multiple spot for blast furnace opening according to claim 5 is characterized in that, described the first air port is same air port with the second air port or is different air ports.
8. the three-dimensional portfire of the multiple spot for blast furnace opening according to claim 5, it is characterized in that, the quantity of described the first air-supply duct is two or more, the quantity of described the 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.
9. the three-dimensional portfire of the multiple spot for blast furnace opening according to claim 5 is characterized in that described the first lower end and the second lower end are the hydraucone shape.
10. a blast furnace comprises cupola well and the air port and the Tie Kou that are arranged on the cupola well, it is characterized in that, described blast furnace also comprises such as three-dimensional portfire of each described multiple spot for blast furnace opening in the claim 5 to 9.
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 true CN102899430A (en) | 2013-01-30 |
| CN102899430B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907910A (en) * | 2016-06-12 | 2016-08-31 | 宝钢集团新疆八钢铁有限公司 | OuYe furnace drying device |
| CN107779532A (en) * | 2017-11-15 | 2018-03-09 | 攀钢集团西昌钢钒有限公司 | A kind of blast furnace opening device and method |
| CN112981026A (en) * | 2021-02-23 | 2021-06-18 | 山西太钢不锈钢股份有限公司 | Arrangement method of blast furnace drying hot air guide pipe |
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| 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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- 2012-09-19 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907910A (en) * | 2016-06-12 | 2016-08-31 | 宝钢集团新疆八钢铁有限公司 | OuYe furnace drying device |
| 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 |
| CN107779532A (en) * | 2017-11-15 | 2018-03-09 | 攀钢集团西昌钢钒有限公司 | A kind of blast furnace opening device and method |
| 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 |
| CN112981026A (en) * | 2021-02-23 | 2021-06-18 | 山西太钢不锈钢股份有限公司 | Arrangement method of blast furnace drying hot air guide pipe |
| 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 |
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| CN102899430B (en) | 2014-12-17 |
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