CN1096055A - Be provided with the hotblast stove of flue-gas uniform distribution device - Google Patents
Be provided with the hotblast stove of flue-gas uniform distribution device Download PDFInfo
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- CN1096055A CN1096055A CN 94100884 CN94100884A CN1096055A CN 1096055 A CN1096055 A CN 1096055A CN 94100884 CN94100884 CN 94100884 CN 94100884 A CN94100884 A CN 94100884A CN 1096055 A CN1096055 A CN 1096055A
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- brick
- hotblast stove
- flue
- uniform distribution
- stones
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
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Abstract
The present invention relates to blast funnace hot blast stove, particularly hotblast stove vault flue-gas uniform distribution device belongs to the ironmaking technology field.
The present invention directly builds masonry on the regenerator lattice brick end face by laying bricks or stones with the framework brick, and is gapped between its extrados and the vault inner-wall surface, and the intrados and the hotblast stove longitudinal axis form angle α.The combustion chamber partition wall is built by laying bricks or stones with concave-convex brick, and its exterior wall top is built into inclined-plane or staged.Adopt the present invention flue gas uniform distribution degree can be brought up to more than 82%, wind-warm syndrome improves 35～50 ℃, and stable, and joint Jiao increases iron, prolongs furnace campaign.
Description
The present invention relates to blast funnace hot blast stove, particularly hotblast stove vault space flue-gas uniform distribution device belongs to the ironmaking technology field.
Hotblast stove is the equipment that high-temperature hot-air is provided for blast furnace production, is made of combustion chamber and regenerator (checker brickwork).Existing blast funnace hot blast stove, no matter internal combustion type, external combustion type still are other type, problem such as have all that wind-warm syndrome is low and unstable, furnace thermal efficiency is low and furnace campaign is short.Think that according to the study smoke distribution seriously inhomogeneous (its distribution degree of uniformity only is 30～67%) is its major cause on the regenerator lattice brick cross section.Smoke distribution is inhomogeneous to worsen the interior heat exchange of stove, and heat storage capacity reduces, and causes wind-warm syndrome low and unstable, simultaneously, checker brick are inhomogeneous because of heating, breathing differs misplaces, peel off, uneven subsidence, so that brickbat stops up the checker brick checkerwork cell, Raw air way resistance increases, and furnace thermal efficiency worsens day by day.In order to improve the smoke distribution situation, scientific and technical personnel have made extensive work both at home and abroad, have proposed many novel technical solutions, but have failed to reach the purpose that makes flue gas uniform distribution on the checker brick cross section all the time.For example, the scheme that U.S. Pat-2352305 proposes is, changes hotblast stove semisphere vault into the level top, with partition wall little (being divided into several) drawn in combustion chamber and regenerator, and the smoke distribution device that is made of the water conservancy diversion plate washer is set on the partition wall end face of combustion chamber.Also have, German Patent DT-2352305, introducing a kind of scheme is to build step by laying bricks or stones at the checker brickwork top, on each step flow deflector is set, and forms the smoke distribution device.And for example, Soviet Union invention SU-685695 proposes in the vault space vertical arched door to be set, and is built into the checker brick top stepped.So all, because the never vivid dynamic and air flow structure of hotblast stove vault spatial flue gas of well understanding of contriver, these schemes fail to eliminate vault spatial flue gas eddy current and air-flow is compressed, concentrate the influence that is brought, and can not reach predetermined goal of the invention.And, the structure more complicated of these parallel works, stability is bad, causes under the inhomogenous situation of breathing and may collapse in the temperature difference, and brickbat stops up the regenerator checkerwork cell, and Raw air way resistance is increased, and brings adverse consequences for the operation of hotblast stove.Perhaps just because of these schemes unrealistic anxiety is arranged, so fail the popularization that is applied aborning.
The purpose of this invention is to provide a kind of simple in structure, good stability, effective flue-gas uniform distribution device, under the condition that does not change existing blast-furnace hot-air furnace structure, increase substantially the be evenly distributed degree of high-temperature flue gas on the regenerator lattice brick cross section, thereby raising wind-warm syndrome, prolong furnace campaign, save coke, increase pig iron output.
Technical solution of the present invention is the frame-type refractory brick (being called for short the framework brick) that has hole with middle, directly builds flue-gas uniform distribution device by laying bricks or stones on the regenerator lattice brick end face.This masonry plays the effect that reorganizes flue gas flow, and it has the cambered surface of two different curvature, and the intrados and the hotblast stove longitudinal axis have angle α, have the gap between extrados and the vault inner-wall surface, and flue gas can enter checker brickwork through the framework hole by the gap.Partition wall between combustion chamber and the regenerator is built by laying bricks or stones with concave-convex brick, and its exterior wall top is built into inclined-plane or ladder form, and the interior wall top is built into the plane.The combined action of partition wall and smoke distribution device whereby can be eliminated vault spatial flue gas eddy current, and flue gas flow is distributed again, improves flue gas distribution degree of uniformity.
Below in conjunction with accompanying drawing the flue-gas uniform distribution device that the present invention program provided is further described.
Fig. 1 is a vertically cut-away view of flue-gas uniform distribution device (6).A is that partition wall is built full-page proof by laying bricks or stones.
Fig. 2 is a framework brick synoptic diagram.
Shown in Figure 1:
1-hotblast stove furnace lining;
2-regenerator lattice brick masonry;
3-combustion chamber partition wall
The 4-combustion chamber;
The extrados of 5-flue-gas uniform distribution device (framework brick structures) and the gap between the vault inner-wall surface;
6-flue-gas uniform distribution device of the present invention (framework brick structures, longitudinal cross-section);
The intrados of α-framework brick structures and the angle of the hotblast stove longitudinal axis.
The masonry that forms is constructed with a kind of framework brick of specialized designs manufacturing by diagram flue-gas uniform distribution device system, directly is located on the regenerator lattice brick masonry end face.This framework brick is that a kind of four limits are the refractory brick that framework, centre have hole, and its framework length of side is of a size of 0.2～0.8m, and the brick hole length of side (linear dimension) is 0.10～0.5m.Its planeform depends on vault construction form and the fragment of brick particular location on masonry, can be fan-shaped, crescent, trapezoidal, rectangle and garden shape, or the like.Brick muscle cross-sectional shape can be rectangle, long taper, wedge shape, double end taper etc., shown in accompanying drawing 2A-A.The longitudinal cross-section shape of framework brick structures (6) as shown in Figure 1.The horizontal cross sectional geometry of masonry is surrounded by the garden arc that inside and outside two curvature do not wait.The radius of inside and outside camber line is according to its position of living in and deciding on the framework brick structures.The intrados and the hotblast stove longitudinal axis have an angle α, and for the hotblast stove of different structure, the α angle can be 8 °～38 °.Have gap (5) between extrados and the vault inner-wall surface, the size in gap is 0.05～0.22 with the ratio of hotblast stove radius.In order successfully to guide the high-temperature flue gas in combustion chamber (4) into flue-gas uniform distribution device (6), the exterior wall of combustion chamber partition wall (3) is built height gradually from interior side direction regenerator (2) one sides, the top constitutes inclined-plane or ladder form, and the horizontal projection length on inclined-plane equals combustion chamber radius or diameter.The interior wall top of combustion chamber partition wall is built into the plane.By means of the combined action of the partition wall of building by laying bricks or stones like this and apparatus of the present invention, just can eliminate air-flow " dead angle " and eddy current that the vault space exists, flue gas is uniformly distributed on the regenerator lattice brick cross section.In order to prevent that the combustion chamber partition wall from falling brick and distortion and push the regenerator lattice brick masonry, the present invention adopts concave-convex brick to build the combustion chamber partition wall by laying bricks or stones, and this concave-convex brick has the groove and the corresponding flange of mutual grafting.
The flue-gas uniform distribution device of describing by Fig. 1 is a kind of embodiment of the present invention program on Cowper stove.
For the hotblast stove of other type,, can adopt the present invention program's flue-gas uniform distribution device equally according to method of design of the present invention and principle.
Adopt the present invention program's flue-gas uniform distribution device the flue gas distribution degree of uniformity on the checker brick cross section can be brought up to more than 82%, make wind-warm syndrome improve 35～50 ℃, conscientiously avoid blocking of checker brick air flue and combustion chamber partition wall to fall brick, thereby prolong furnace campaign, realize that blast furnace joint Jiao increases iron.
Claims (5)
1, a kind of blast funnace hot blast stove, constitute by combustion chamber and regenerator (checker brickwork), be provided with flue-gas uniform distribution device in the vault space, it is characterized in that flue-gas uniform distribution device is a framework brick structures, directly build by laying bricks or stones on the regenerator lattice brick end face, it has the cambered surface of two different curvature, has the gap between its extrados and the hotblast stove inner-wall surface, and the intrados and the hotblast stove longitudinal axis have angle α.
2, according to the described hotblast stove of claim 1, the framework length of side that it is characterized in that building by laying bricks or stones the framework brick of flue-gas uniform distribution device can be 0.2～0.8m, the brick aperture length of side is 0.10～0.50m, brick muscle cross section can be rectangle, long taper, wedge shape, double end taper etc., and its planeform can be fan-shaped, crescent, rectangle, trapezoidal and garden shape or the like.
3, according to the described hotblast stove of claim 1, it is characterized in that the ratio of gap length and hotblast stove radius between framework brick structures extrados and the hotblast stove inner-wall surface can be 0.05～0.22, the angle α of the intrados and the hotblast stove longitudinal axis is 8 °～38 °.
4, according to claim 1 or 3 described hotblast stoves, it is characterized in that the combustion chamber partition wall builds by laying bricks or stones by following form with concave-convex brick: exterior wall is built height from the outside, combustion chamber gradually towards the regenerator direction, and its top is built into inclined-plane or ladder form, and the interior wall top is built into the plane.
5,, it is characterized in that concave-convex brick four limits of building the combustion chamber partition wall by laying bricks or stones have the groove and the corresponding flange of pegging graft for mutually according to the described hotblast stove of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100884 CN1033275C (en) | 1994-01-07 | 1994-01-07 | Hot-blast stove with flue-gas uniform distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100884 CN1033275C (en) | 1994-01-07 | 1994-01-07 | Hot-blast stove with flue-gas uniform distribution device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096055A true CN1096055A (en) | 1994-12-07 |
| CN1033275C CN1033275C (en) | 1996-11-13 |
Family
ID=5029894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94100884 Expired - Fee Related CN1033275C (en) | 1994-01-07 | 1994-01-07 | Hot-blast stove with flue-gas uniform distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033275C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809285A (en) * | 2012-08-08 | 2012-12-05 | 广东四通集团股份有限公司 | Large-section high-efficiency energy-saving type gas tunnel kiln |
| CN103307875A (en) * | 2013-05-22 | 2013-09-18 | 江阴长源机械制造有限公司 | Assistant arched crown of high-temperature-region kiln body of pushed slab kiln in nitrogen protective atmosphere |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595042B (en) * | 2003-09-11 | 2010-05-12 | 武汉宏图高炉热风炉高新技术研究所 | Intensified heat-exchange device for heat-exchanger |
| BRPI0606980A2 (en) * | 2005-02-01 | 2009-07-28 | Danieli Corus B V | support assembly for supporting the heat regeneration retention mechanism in a hot airflow oven, hot airflow oven having said support assembly, method for producing hot air using said hot airflow oven |
-
1994
- 1994-01-07 CN CN 94100884 patent/CN1033275C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809285A (en) * | 2012-08-08 | 2012-12-05 | 广东四通集团股份有限公司 | Large-section high-efficiency energy-saving type gas tunnel kiln |
| CN103307875A (en) * | 2013-05-22 | 2013-09-18 | 江阴长源机械制造有限公司 | Assistant arched crown of high-temperature-region kiln body of pushed slab kiln in nitrogen protective atmosphere |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1033275C (en) | 1996-11-13 |
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