CN1775958A

CN1775958A - Efficien hot-blast stove

Info

Publication number: CN1775958A
Application number: CN 200510127979
Authority: CN
Inventors: 范英俊; 郭士进; 赵和平; 朱利斌
Original assignee: Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2005-12-09
Filing date: 2005-12-09
Publication date: 2006-05-24
Anticipated expiration: 2025-12-09
Also published as: CN100357456C

Abstract

The invention relates to a new style high efficiency air furnace that includes burning room, regenerator, hot blast valve, hot blast main. The feature is that the obliquity of the burning room is 70-75 degree, and plural burner is distributed equally on the wall of burning room. The burner slopes downward, and has different obliquity that the minimum is 5 degree and the maximum 15 degree. It occupies small space, large heating surface, and is easy to construct.

Description

Efficien hot-blast stove

(1), technical field

The present invention relates to the right formula hotblast stove in top that a kind of blast furnace ironmaking is used.

(2), background technology

The form that blast funnace hot blast stove adopts has three kinds: interior right formula, outer right formula and push up right formula.The burner of interior right formula hot blast, stove is installed in the bottom, and the individual stress that is heated by force in combustion chamber easily produces short circuit, influence the life-span of hotblast stove, and heating surface is subjected to the influence in place big.The combustion chamber of outer right formula hotblast stove externally, floor space is big, the construction cost height.The combustion chamber of pushing up right formula hotblast stove is on top, because the complex structure of present right formula Combustion of Hot Air Furnace chamber, top, so place and construction cost are big, can not adapt to the cost performance of medium and small blast furnace, the needs of right formula hot-blast furnace transformation Cheng Dingran formula hotblast stove in can not satisfying.1., the inwall cone angle of combustion chamber is 60 degree the patent No. is the Chinese patent of CN02287802.5, discloses a kind of Efficien hot-blast stove, and it comprises combustion chamber, regenerator, hot blast valve and hot-blast main, and its principal character is:; 2., uniform a plurality of burners on the combustion chamber wall, on the isometrical circumference of the burner ejiction opening of described a plurality of burners in same horizontal plane, all downward-sloping, the pitch angle is 5～15 degree, direction that burner sprays and burner ejiction opening are 27～32 degree to the angle of the circle center line connecting of isometrical circumference, and are partial to identical.Feature is the inwall 60 degree cone angles of the combustion chamber difficulty relatively of not only constructing 1., and is unfavorable for arranging under the temperature, has reduced the thermo-efficiency of hotblast stove.Though 2. feature can form vortex flame, temperature rise is fast, and flame is serious to washing away of stove inwall, has reduced the maintenance cycle of hotblast stove, and its use cost is improved.

(3), summary of the invention

In order to overcome the shortcoming of prior art, the invention provides a kind of Efficien hot-blast stove, not only floor space is little for it, and heating surface is big, and easily construction, and maintenance cycle is long, right formula hot-blast furnace transformation Cheng Dingran formula hotblast stove in being particularly suitable for.

The present invention solves the technical scheme that its technical problem takes: it comprises the combustion chamber, regenerator, hot blast valve and hot-blast main, the combustion chamber is on regenerator, regenerator is a cylindrical tube shape, fire grate and flue outlet are arranged at its bottom, its wall has five layers, from inside to outside be clay brick successively, light weight fireclay brick, aluminum silicate fiber, spray material and crust, build full seven apertures in the human head checker brick on the fire grate in the regenerator, the feather that described combustion chamber is being down is spherical, near outlet and manhole that hot blast valve is arranged on the combustion chamber wall of regenerator, the outlet of hot blast valve and the combustion chamber inwall on the manhole are the big down little circular cone of, combustion chamber wall has five layers, from inside to outside be high alumina brick successively, light weight fireclay brick, aluminum silicate fiber, spray material and crust, the other parts of combustion chamber wall from inside to outside are clay brick successively, light weight fireclay brick, aluminum silicate fiber, spray material and crust, described hot-blast main is characterized in that described combustion chamber inclination alpha is the 70-75 degree outside combustion chamber and regenerator; Uniform a plurality of burners on the described combustion chamber wall, burner is downward-sloping, and the inclination angle has nothing in common with each other, minimum 5 degree, maximum 15 degree.

Not only floor space is little for it, and heating surface is big, and easily construction, and maintenance cycle is long, right formula hot-blast furnace transformation Cheng Dingran formula hotblast stove in being particularly suitable for.

(4), description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a sectional view of the present invention;

Fig. 2 is a combustion chamber of the present invention enlarged view.

(5), embodiment

As shown in Figure 1, 2, the present invention includes combustion chamber 6, regenerator 11, hot blast valve and hot-blast main, as shown in Figure 1.Combustion chamber 6 is on regenerator 11, and regenerator 11 is a cylindrical tube shape, and fire grate 9 and flue outlet 10 are arranged at its bottom, and its wall has five layers, from inside to outside is clay brick, light weight fireclay brick, aluminum silicate fiber, spray material and crust successively.Build full seven apertures in the human head checker brick 8 on the fire grate 9 in the regenerator 11, seven apertures in the human head checker brick 8 have self-control level and vertical fore shaft, and interlocking is an one when building by laying bricks or stones, prevent the local deformaton stifled match passage that subsides.The feather that described combustion chamber 6 is being down is spherical, near outlet 7 and manhole that hot blast valve is arranged on combustion chamber 6 walls of regenerator 11, the outlet 7 of hot blast valve and combustion chamber 6 inwalls on the manhole are the big down little circular cone 5 of, inclination alpha is 70 degree, upwards be the roundlet cylinder 4 isometrical again with the conicle end face, on the roundlet cylinder 4 be than bigger great circle cylinder 3, be the vault 2 that ball coronal and big-wall are built by laying bricks or stones respectively on the great circle cylinder 3.Uniform a plurality of burners 1 on 6 walls of the combustion chamber of described great circle cylinder 3.Combustion chamber 6 walls of described vault 2 parts have five layers, from inside to outside be high aluminium brick layer, light weight fireclay brick layer, aluminum silicate fiber layer, the spraying bed of material and crust successively, the other parts of combustion chamber wall from inside to outside are undercloak, light weight fireclay brick layer, aluminum silicate fiber layer, the spraying bed of material and crust successively.The position of the outlet 7 of described hot blast valve is under burner 1, and hot-blast main's (not drawing among the figure) is outside combustion chamber 6 and regenerator 11.Described burner 1 has 12, and on all isometrical circumference of burner 1 ejiction opening in same horizontal plane, all downward-sloping, angle of inclination beta has nothing in common with each other, minimum 5 degree, maximum 15 degree.Direction that burner 1 sprays and burner ejiction opening are 29 degree to the angle of the circle center line connecting of isometrical circumference, and are partial to identical.All burners 1 all adopt dicyclo heat-resistance stainless steel burner, interior ring ventilating coal gas, outer shroud blowing air.The ejiction opening of all burners 1 is inboard 100 millimeters of 6 walls apart from the combustion chamber.

Claims

1, a kind of Efficien hot-blast stove, it comprises combustion chamber (6), regenerator (11), hot blast valve and hot-blast main, combustion chamber (6) is on regenerator (11), regenerator (11) is a cylindrical tube shape, fire grate (9) and flue outlet (10) are arranged at its bottom, its wall has five layers, from inside to outside be clay brick successively, light weight fireclay brick, aluminum silicate fiber, spray material and crust, build full seven apertures in the human head checker brick (8) on the fire grate (9) in the regenerator (11), the feather that described combustion chamber (6) is being down is spherical, near outlet (7) and manhole that hot blast valve is arranged on combustion chamber (6) wall of regenerator (11), combustion chamber (6) inwall on outlet of hot blast valve (7) and the manhole is the big down little circular cone of, combustion chamber (6) wall has five layers, from inside to outside be high alumina brick successively, light weight fireclay brick, aluminum silicate fiber, spray material and crust, the other parts of combustion chamber (6) wall from inside to outside are clay brick successively, light weight fireclay brick, aluminum silicate fiber, spray material and crust, described hot-blast main is characterized in that outside combustion chamber and regenerator: the inclination alpha of described combustion chamber (6) is the 70-75 degree; Uniform a plurality of burners (1) on the wall of described combustion chamber (6), burner (1) is downward-sloping, and the inclination angle has nothing in common with each other, minimum 5 degree, maximum 15 degree.