CN1025569C - Unidirectional top oxygen blown open-hearth furnace - Google Patents
Unidirectional top oxygen blown open-hearth furnace Download PDFInfo
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- CN1025569C CN1025569C CN 92109886 CN92109886A CN1025569C CN 1025569 C CN1025569 C CN 1025569C CN 92109886 CN92109886 CN 92109886 CN 92109886 A CN92109886 A CN 92109886A CN 1025569 C CN1025569 C CN 1025569C
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- hearth furnace
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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Abstract
The present invention a unidirectional top oxygen blowing open hearth furnace. A furnace end on one side of a furnace body is walled up by a refractory material, a checker chamber on the other fume exhaust side is omitted, and the heat of the furnace body is compensated and supplied by oxygen oil guns arranged on the side walled up by the refractory material and a furnace top. Residual heat of waste vapor is cooled and recovered by a vaporization water cooling furnace end, a water cooling flue and a residual heat boiler. Because the open hearth furnace system has reduced air leakage, the heat efficiency of the open hearth furnace is high, the secondary pollution is less, the output of each hour is increased, and the cost of each ton of steel is greatly reduced. In addition, because the checker chamber and a reversing alteration system of the unidirectional top oxygen blowing open hearth furnace are omitted, the device investment is less, and the smelting technical indexes of the open hearth furnace are excellent.
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, and 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 increased channel (2), oxygen rifle (3), oxygen oil gun (4), fire door (5) is subjected to iron mouth (6), lander (7), burner crack sealing device (8), slag funnel (9), continuously mucking machine (10), water-cooled flue section (11), flue (12), waste heat boiler (13), cleaner (14), the formations such as chimney (15) and blower fan (16), the smelting of this open hearth adds with hopper from fire door (5) with steel scrap and slag material, molten iron from be subjected to iron mouth (6) convert into, 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 material, and is building dead position and furnace roof and be equipped with the oxygen oil gun (4) of heat compensation. The high-temp waste gas that produces in the smelting is through water-cooled increased channel (2), water-cooled flue section (11) and waste heat boiler (13) cool off and recovery waste heat, cooled waste gas after cleaner (14) dedusting, is discharged by chimney (15) by blower fan (16) again. In order to eliminate the cinder pocket gas leak phenomenon, a water-cooled slag funnel (9) is set in the bottom of water-cooled increased channel (2), the slag that falls is discharged after by continuous mucking machine (10) shrend. Because whole system sealing is tight, flue system simply smoothly, so SR 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 equipment investment is few. In the situation that the system air leakage amount greatly 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 (1)
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 compositions such as (4), the smelting of this open hearth adds with hopper from fire door (5) with steel scrap and slag making material, molten iron is converted into from being subjected to iron mouth (6), oxygen is blown into the molten bath by oxygen rifle (3) from furnace roof, the high-temp waste gas that produces in the smelting is through water-cooled uptake (2), water-cooled flue section (11) etc. is cooled off recovery, cooled waste gas is discharged by chimney (15) by blower fan (16) after dust removal installation (14) dedusting again, a side that it is characterized in that body of heater (1) is built dead with refractory materials, and being equipped with oxygen oil gun (4) building dead side, the waste gas that produces in the stove is from being provided with water-cooled uptake (2), one side of water-cooled flue section (11) and waste heat boiler (13) is got rid of.
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 CN1072458A (en) | 1993-05-26 |
| CN1025569C true 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) |
-
1992
- 1992-09-12 CN CN 92109886 patent/CN1025569C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1072458A (en) | 1993-05-26 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |