CN1072458A - Unidirectional top oxygen blown open-hearth furnace - Google Patents
Unidirectional top oxygen blown open-hearth furnace Download PDFInfo
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- CN1072458A CN1072458A CN 92109886 CN92109886A CN1072458A CN 1072458 A CN1072458 A CN 1072458A CN 92109886 CN92109886 CN 92109886 CN 92109886 A CN92109886 A CN 92109886A CN 1072458 A CN1072458 A CN 1072458A
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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Abstract
A kind of unidirectional top oxygen blown open-hearth furnace, it builds the burner of body of heater one side dead with refractory materials, cancel regenerator in another smoke evacuation side, and the heat of body of heater is mounted on the oxygen oil gun compensation heat supply of building dead side and furnace roof.The waste heat of waste gas cools off recovery by vaporize water black furnace head, water-cooled flue and waste heat boiler.Because this open hearth system inleakage reduces, the furnace thermal efficiency height, institute pollutes faint in proper order, and hourly output improves, and ton steel cost reduces greatly.Cancelled regenerator and the altering system that commutates owing to unidirectional top oxygen blown open-hearth furnace in addition, so facility investment is few, open hearth smelting technology index is good.
Description
The present invention relates to a kind of unidirectional top oxygen blown open-hearth furnace, belong to steel-making open hearth equipment.
In the open hearth that early occurs in field of steel-making, primary is fixed pair of uptake and three uptake formula open hearths, along with the continuous development of mechanization degree with the fixed tilting-type that transform as.Oxygenerating technology occur and maturation after, field of metallurgy is carried out strengthening smelting with oxygen in succession on open hearth, just produced the single uptake top blowing oxygen tilting open-hearth furnace of present general double fluid to (two commutation is discharged fume) thereupon.Need to be provided with two slag pockets at double fluid in the top blowing oxygen open hearth, two regenerator and a cover commutation are with the change valve system.Because will build a large amount of checker brick by laying bricks or stones in the regenerator, system's link is more in addition, systemic resistance is big, secondary pollution is serious thereby cause; Refractory consumption rate is big, ton steel cost is high; Drawbacks such as smelting cycle length and equipment complexity.At this situation, the present invention proposes a kind of unidirectional top oxygen blown open-hearth furnace.
Order of the present invention is exactly to provide a kind of single current of eliminating regenerator and commutation altering system to open hearth, reduces exhausted air quantity, and so as to reducing systemic resistance, the secondary pollution that solves open hearth improves the technico-economical comparison that open hearth is smelted.
Unidirectional top oxygen blown open-hearth furnace of the present invention, wing furnace head with the two-way top blowing oxygen open hearth of existing top blowing oxygen blocks exactly, the regenerator cancellation of opposite side (smoke evacuation side), the slag pocket of smoke evacuation side changes water seal funnel chain type continuous tapping mechanism into, the burner crack adopts endless tube folder elasticity refractory fibre mode to seal, and burner gas residual heat is by water-cooled gasifying furnace head and flue and technology and equipments such as waste heat boiler cooling and recovery.Heat with the oxygen oil gun blocking wing furnace end of body position and furnace roof, both solved the secondary pollution problem, improved the technico-economical comparison that open hearth is smelted again.
Foregoing of the present invention further specifies as follows in conjunction with the accompanying drawings:
Fig. 1, the unidirectional top oxygen blown open-hearth furnace system schematic.
Fig. 2, the A-A enlarged diagram of Fig. 1.
Unidirectional top oxygen blown open-hearth furnace of the present invention is mainly by body of heater (1), water-cooled uptake (2), oxygen rifle (3), oxygen oil gun (4), fire door (5) is subjected to iron mouth (6), tapping spout (7), burner crack sealing device (8), slag funnel (9), mucking machine (10) continuously, water-cooled flue section (11), flue (12), waste heat boiler (13), dust removal installation (14), chimney (15) and blower fan formations such as (16), the smelting of this open hearth adds with hopper from fire door (5) with steel scrap and slag making material, and molten iron is converted into from being subjected to iron mouth (6), and oxygen is blown into the molten bath by oxygen rifle (3) from furnace roof.One wing furnace head of body of heater (1) is built dead with refractory materials, and is building the oxygen oil gun (4) that dead position and furnace roof are equipped with the compensation heat.The high-temp waste gas that produces in the smelting is through water-cooled uptake (2), water-cooled flue section (11) and waste heat boiler (13) cool off and recovery waste heat, cooled waste gas after dust removal installation (14) dedusting, is discharged by chimney (15) by blower fan (16) again.In order to eliminate the slag pocket gas leak phenomenon, a water-cooled slag funnel (9) is set in the bottom of water-cooled uptake (2), the slag that falls is discharged after by continuous mucking machine (10) shrend.Because the total system sealing is tight, flue system is simply freely suitable, so systemic resistance is little, secondary pollution is faint.In unidirectional top oxygen blown open-hearth furnace of the present invention, owing to cancelled regenerator and commutation altering system, designs simplification, refractory consumption rate is low, and facility investment is few.Under the situation that system's inleakage significantly reduces, the furnace thermal efficiency height, smelting cycle is short, the hourly output height.
The positively effect of unidirectional top oxygen blown open-hearth furnace of the present invention and technico-economical comparison thereof, do following explanation in conjunction with the embodiments: Anshan Iron and Steel Company's steelworks transform a 300t double fluid as unidirectional top oxygen blown open-hearth furnace of the present invention to the top blowing oxygen tilting open-hearth furnace when the open hearth overhaul, and the main economic and technical indices contrast situation before and after it is transformed is listed in table 1.As can be seen from Table 1, unidirectional top oxygen blown open-hearth furnace not only can satisfy the open-hearth process requirement, and tap to tap time is short, the furnace campaign height, and raw materials consumption is low.Secondary pollution problem that the more important thing is it is under control basically, and test data shows that unidirectional top oxygen blown open-hearth furnace reduces by 47% and 81.4% than double fluid respectively to the secondary smoke quantity discharged and the smoke dust discharge concentration of top blowing oxygen open hearth.
Claims (3)
1, a kind of unidirectional top oxygen blown open-hearth furnace, mainly by body of heater (1), water-cooled uptake (2), oxygen rifle (3), oxygen oil gun (4), fire door (5), be subjected to iron mouth (6), tapping spout (7), stove head seal crack system (8), slag funnel (9), mucking machine (10), water-cooled flue section (11), flue (12), waste heat boiler (13), dust removal installation (14), chimney (15) and blower fan (16) etc. are formed continuously, it is characterized in that it is dead with the refractory materials block the burner of body of heater (1) one side, the regenerator cancellation of smoke evacuation side.
2, unidirectional top oxygen blown open-hearth furnace according to claim 1 is characterized in that carrying out heat compensation at burner position and the furnace roof of building dead side with oxygen oil gun (4).
3, unidirectional top oxygen blown open-hearth furnace according to claim 1 is characterized in that being cooled off and waste heat recovery by water-cooled uptake (2), water-cooled flue section (11) and waste heat boiler (13) from the high-temp waste gas that the smoke evacuation side is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109886 CN1025569C (en) | 1992-09-12 | 1992-09-12 | Unidirectional top oxygen blown open-hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109886 CN1025569C (en) | 1992-09-12 | 1992-09-12 | Unidirectional top oxygen blown open-hearth furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1072458A true CN1072458A (en) | 1993-05-26 |
| CN1025569C CN1025569C (en) | 1994-08-03 |
Family
ID=4944438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92109886 Expired - Fee Related CN1025569C (en) | 1992-09-12 | 1992-09-12 | Unidirectional top oxygen blown open-hearth furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1025569C (en) |
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1992
- 1992-09-12 CN CN 92109886 patent/CN1025569C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1025569C (en) | 1994-08-03 |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |