CN102218526A - High-efficiency and energy-saving roasting device for steel ladles - Google Patents
High-efficiency and energy-saving roasting device for steel ladles Download PDFInfo
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- CN102218526A CN102218526A CN2011101367442A CN201110136744A CN102218526A CN 102218526 A CN102218526 A CN 102218526A CN 2011101367442 A CN2011101367442 A CN 2011101367442A CN 201110136744 A CN201110136744 A CN 201110136744A CN 102218526 A CN102218526 A CN 102218526A
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Abstract
The invention provides a high-efficiency and energy-saving roasting device for steel ladles, comprising a steel ladle body; a cover is hermetically arranged on the upper part of the steel ladle body; a nozzle and a smoke gas outlet are arranged on the cover; the steel ladle body is internally provided with a clapboard that divides the internal space of the steel ladle into two halves; a smoke gas passage is remained at the bottom of the steel ladle body; and the nozzle and the smoke gas outlet are arranged at two sides of the clapboard. The high-efficiency and energy-saving roasting device for steel ladle has high combustion efficiency, high thermal utilization ratio, and excellent environment-friendly performance.
Description
Technical field
The present invention relates to the steelmaking equipment field, especially a kind of ladle heater.
Background technology
Because iron and steel production has also proposed more higher requirements to the attention of quality and cost for ladle, ladle and pans baking temperature and energy consumption.On the one hand need also to guarantee ladle baking simultaneously the uniformity of baking temperature also will cut down the consumption of energy, reduce environmental pollution on the other hand as far as possible to higher temperature.
The roaster that present domestic iron and steel enterprises generally adopts is telescopic or metal self-preheating type roaster.Its shortcoming is: the energy consumption height, stoving time is long, baking temperature is low, baking quality is poor.Its flue gas loss accounts for 80% of burning total amount of heat, wants to improve the operating efficiency of Ladle-casting apparatus, and optimal path reduces its exhaust gas temperature exactly.Enter the nineties, because the development of ceramic industry, making small-sized ceramic honeycomb heat storage be applied to burner becomes possibility, and a lot of novel Ladle-casting apparatus are succeeded in developing.With the recovery of cigarette device waste heat be pushed into the limit (air preheating temperature up to 1000 ℃～1400 ℃, the temperature difference of itself and flame narrows down to 50 ℃), and with having realized low NOx thing discharging, significantly improved the efficient of flue gas waste heat recovery, make combustion air and gas preheating to unprecedented high temperature (greater than 1000 ℃), exhaust gas temperature is then reduced to about 100 ℃.Flame is more stable, and temperature is more even, and the discharge capacity of pollutant is lower.The New Regenerative combustion technology has very significant advantage, shows as: 1. can use low-calorie fuel.2. but energy savings 50%～70%; 3. baking speed improves 3～5 times; 4. disposal of pollutants can reduce more than 50%; 5. structure is fastening, and control is flexible, and applicability is strong; 6. investment is short return period, the benefit height.Compare with the traditional combustion technology, novel high preheat temperature Regenerative Combustion Technology all has incomparable advantage in all fields, we can say, it is the flue gas revolution on the combustion technology.
At present, the heat storing type ladle baker in domestic newly-built continuous casting workshop all adopts traditional two burner alternation schemes, owing to do not take into full account the design feature and the working environment of ladle, mostly service efficiency is not very desirable.The subject matter of its existence is: (1) owing to be new technique, therefore, equipment such as heating furnace, burner do not adapt to its requirement yet, remain in the problem of design with operating aspect.(2) high temperature brings pipeline, equipment more fragile etc.(3) heat storage lumps, the life-span is long etc.(4) furnace pressure changes greatly, causes heat to shed in a large number, fails to reach actual energy-saving effect.(5) regular maintenance amount, cost increase.By the practice in surplus ten years, each large enterprises and unit were to having hankered after Regenerative Combustion Technology like that originally.At present, the arguement between opposition and the support is very fierce.
Summary of the invention
For the deficiency that efficiency of combustion is lower, heat utilization efficiency is lower, the feature of environmental protection is relatively poor that overcomes existing ladle heater, the invention provides the energy-efficient apparatus for baking of ladle that a kind of efficiency of combustion is higher, heat utilization efficiency is high, the feature of environmental protection is good.
The technical solution adopted for the present invention to solve the technical problems is:
The energy-efficient apparatus for baking of a kind of ladle, comprise the ladle inclusion, clad is installed in described ladle inclusion top seal, described clad is provided with nozzle and exhanst gas outlet, establish dividing plate in the described ladle inclusion, ladle inside is separated into two halves, and the flue gas passageway is left in the bottom of described ladle inclusion, and described nozzle and exhanst gas outlet lay respectively at the both sides of dividing plate.
Further, described exhaust gases passes is the gap between the bottom of described dividing plate bottom and described ladle inclusion.
Or: described exhaust gases passes is a plurality of semicircle breach of described dividing plate bottom.Described exhaust gases passes also can be selected other shapes.
Further again, described dividing plate adopts the surface to be coated with far infrared radiation coating thistle board or adopts the carbofrax material preparation of high radiation character.
Described dividing plate is spliced by the polylith separator unit, and this frame mode is convenient to realize assembling, certainly, also can adopt whole preparation.
Described nozzle and exhanst gas outlet are the center symmetric arrangement with described dividing plate.
Described clad and described dividing plate are one.
Described apparatus for baking also is provided with heat-exchanger rig, described exhanst gas outlet is communicated with the gas approach of described heat-exchanger rig, the air intlet of described heat-exchanger rig is communicated with atmosphere, and the air outlet slit of described heat-exchanger rig is communicated with described nozzle, and the exhanst gas outlet of described heat-exchanger rig is communicated with chimney.Gas approach in the described heat-exchanger rig and the passage between the exhanst gas outlet are for the flue gas circulation, and the passage between air intlet and the air outlet slit is recycled the waste heat in the flue gas for circulation of air, realize air preheat.
Described exhanst gas outlet is provided with the Pd-Rh-Pt arrangement for catalytic purification, for the occasion that heat-exchanger rig is not set, is set directly at exhanst gas outlet 7 places and gets final product; If be provided with heat-exchanger rig, then the Pd-Rh-Pt arrangement for catalytic purification is installed in the chimney place.
Technical conceive of the present invention is: conclude on existing technical foundation and improve, it is recycling etc. that this baking technology relates to pre-recuperation of heat, catalytic combustion and purification and high-temperature flue gas, break through original baking technology notion, no longer be confined to a certain combustion technology, but an integration of these technology.It has efficiency of combustion height, heat utilization efficiency height and the few feature of noxious gas emission this project technology, has simultaneously that flue-gas temperature is adjustable, a characteristic of temperature rise good uniformity and fast baking, and the inclusion upper and lower temperature difference is little.
Beneficial effect of the present invention mainly shows: 1, form a complete flue gas flow channel by the mode of introducing internal partition in bag, allow hot flue gas flow along ladle wall, evenly heat ladle inner wall, take away steam simultaneously, the ladle internal partition adopts high far-infrared composite material preparation, also can be at its surface-coated far ultrared paint, make it to absorb the energy in the flue gas, with the mode oven wall of far infrared radiation, improve heat utilization efficiency, and the introducing arrangement for catalytic purification is used to reduce CO and NOx discharging; 2, make full use of the high-temperature residual heat of burning back flue gas, improved the combustion gas service efficiency, fast baking, energy-conservation more than 50% than conventional roaster, in addition, reduced pollutant emission to greatest extent, energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the structural representation of the energy-efficient apparatus for baking of ladle of embodiment 1.
Fig. 2 is the structural representation of the energy-efficient apparatus for baking of ladle of embodiment 2.
Fig. 3 is the structural representation of the energy-efficient apparatus for baking of ladle of embodiment 3.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1, the energy-efficient apparatus for baking of a kind of ladle, comprise ladle inclusion 5, clad is installed in described ladle inclusion 5 top seals, described clad is provided with nozzle 4 and exhanst gas outlet 7, establishes dividing plate 6 in the described ladle inclusion, and ladle inside is separated into two halves, the flue gas passageway is left in the bottom of described ladle inclusion, and described nozzle 4 and exhanst gas outlet 7 lay respectively at the both sides of dividing plate 6.
Described exhaust gases passes is a plurality of semicircle breach of described dividing plate bottom.Described exhaust gases passes also can be selected other shapes.
Described dividing plate 6 adopts the surface to be coated with far infrared radiation coating thistle board.
Described dividing plate 6 is spliced by the polylith separator unit, and this frame mode is convenient to realize assembling, certainly, also can adopt whole preparation.
Described nozzle 4 and exhanst gas outlet 7 are the center symmetric arrangement with described dividing plate 6.
Described clad and described dividing plate 6 are one, certainly, also both can be fixed together.
Described apparatus for baking also is provided with heat-exchanger rig 2, described exhanst gas outlet is communicated with the gas approach of described heat-exchanger rig, the air intlet 10 of described heat-exchanger rig is communicated with atmosphere, and the air outlet slit of described heat-exchanger rig is communicated with described nozzle, and the exhanst gas outlet of described heat-exchanger rig is communicated with chimney.Gas approach in the described heat-exchanger rig and the passage between the exhanst gas outlet are for the flue gas circulation, and the passage between air intlet and the air outlet slit is recycled the waste heat in the flue gas for circulation of air, realize air preheat.
Described exhanst gas outlet 7 is provided with the Pd-Rh-Pt arrangement for catalytic purification, for the occasion that heat-exchanger rig is not set, is set directly at exhanst gas outlet 7 places and gets final product; If be provided with heat-exchanger rig, then the Pd-Rh-Pt arrangement for catalytic purification is installed in the chimney place.
Adopt fibre block to seal between ladle clad and the inclusion.
This roaster comprises ladle inclusion 5, bag internal partition 6, clad, burner, catalytic combustion honeycomb 4, heat exchanger 2, arrangement for catalytic purification and hot smoke circulating device 9 compositions.Coal gas is from fuel gas inlet 3 inputs, coal gas and combustion air premix are after nozzle is ejected in the ladle internal combustion, also can in catalyzed honeycomb, enter ladle after the catalytic combustion, gas fume after burning can not flow out ladle at once, but flow along the flue that the ladle internal partition forms, downwards by at the bottom of the ladle bag and the flue gas passageway of dividing plate formation, upwards entered the smoke inlet that is arranged on the heat exchanger on the clad then before this, carry out heat exchange with the cold air in the heat exchanger, the discharging of cooling back.
With reference to Fig. 2, in the present embodiment, described exhaust gases passes is the gap between the bottom of described dividing plate 6 bottoms and described ladle inclusion.
Described apparatus for baking also is provided with hot smoke circulating device, is provided with the connection arm between the import of described nozzle 4 and exhanst gas outlet, and hot smoke circulating device 9 is set on the described connection arm, the flue gas of exhanst gas outlet 7 directly can be back in the nozzle 4.
Other structures of present embodiment are all identical with embodiment 1.
This roaster comprises ladle inclusion, bag internal partition, clad, burner, catalytic combustion honeycomb, heat exchanger, arrangement for catalytic purification and hot smoke circulating device composition.Coal gas and combustion air premix are after nozzle is ejected in the ladle internal combustion, also can in catalyzed honeycomb, enter ladle after the catalytic combustion, gas fume after burning can not flow out ladle at once, but flow with the flue that forms along the ladle internal partition, before this downwards by at the bottom of the ladle bag and the flue gas passageway of dividing plate formation, upwards enter the smoke inlet that is arranged on the heat exchanger on the clad then, carry out heat exchange, the discharging of cooling back with cold air in the heat exchanger.Also can enter ladle to hot flue gas once more by hot smoke circulating device and be used to heat ladle, take away steam, also can partly enter heat exchanger heating combustion air, part enters hot smoke circulating device.This device forms a complete flue gas flow channel by the mode of introducing internal partition in bag, allow hot flue gas flow along ladle wall, evenly heat ladle inner wall, take away steam simultaneously, the ladle internal partition adopts high far-infrared composite material preparation, also can be at its surface-coated far ultrared paint, make it to absorb the energy in the flue gas, with far mode oven wall, improve heat utilization efficiency, and the introducing arrangement for catalytic purification is used to reduce CO and NO
XThis device has made full use of the high-temperature residual heat of burning back flue gas, improves the combustion gas service efficiency, and fast baking is energy-conservation more than 50% than conventional roaster, in addition, has reduced pollutant emission to greatest extent, energy-conserving and environment-protective.
With reference to Fig. 3, described dividing plate 6 adopts the carbofrax material preparation of high radiation character.
Other structures of present embodiment are all identical with embodiment 1.
This roaster comprises ladle inclusion, bag internal partition, clad, burner, catalytic combustion honeycomb, heat exchanger, arrangement for catalytic purification and hot smoke circulating device composition.Coal gas and combustion air enter ladle after the catalytic combustion in catalyzed honeycomb, gas fume after burning can not flow out ladle at once, but flow along the flue that the ladle internal partition forms, before this downwards by at the bottom of the ladle bag and the flue gas passageway of dividing plate formation, upwards enter the smoke inlet that is arranged on the heat exchanger on the clad then, carry out heat exchange with the cold air in the heat exchanger, the discharging of cooling back.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (9)
1. energy-efficient apparatus for baking of ladle, comprise the ladle inclusion, it is characterized in that: clad is installed in described ladle inclusion top seal, described clad is provided with nozzle and exhanst gas outlet, establish dividing plate in the described ladle inclusion, ladle inside is separated into two halves, and the flue gas passageway is left in the bottom of described ladle inclusion, and described nozzle and exhanst gas outlet lay respectively at the both sides of dividing plate.
2. the energy-efficient apparatus for baking of ladle as claimed in claim 1 is characterized in that: described exhaust gases passes is the gap between the bottom of described dividing plate bottom and described ladle inclusion.
3. the energy-efficient apparatus for baking of ladle as claimed in claim 1 is characterized in that: described exhaust gases passes is a plurality of semicircle breach of described dividing plate bottom.
4. as the energy-efficient apparatus for baking of the described ladle of one of claim 1～3, it is characterized in that: described dividing plate adopts the surface to be coated with far infrared radiation coating thistle board or adopts the carbofrax material preparation of high radiation character.
5. as the energy-efficient apparatus for baking of the described ladle of one of claim 1～3, it is characterized in that: described dividing plate is spliced by the polylith separator unit or constitutes for single monoblock dividing plate.
6. as the energy-efficient apparatus for baking of the described ladle of one of claim 1～3, it is characterized in that: described nozzle and exhanst gas outlet are the center symmetric arrangement with described dividing plate.
7. as the energy-efficient apparatus for baking of the described ladle of one of claim 1～3, it is characterized in that: described clad and described dividing plate are one.
8. as the energy-efficient apparatus for baking of the described ladle of one of claim 1～3, it is characterized in that: described apparatus for baking also is provided with heat-exchanger rig, described exhanst gas outlet is communicated with the gas approach of described heat-exchanger rig, the air intlet of described heat-exchanger rig is communicated with atmosphere, the air outlet slit of described heat-exchanger rig is communicated with described nozzle, and the exhanst gas outlet of described heat-exchanger rig is communicated with chimney.
9. as the energy-efficient apparatus for baking of the described ladle of one of claim 1～3, it is characterized in that: described exhanst gas outlet is provided with the Pd-Rh-Pt arrangement for catalytic purification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110136744.2A CN102218526B (en) | 2011-05-25 | 2011-05-25 | High-efficiency and energy-saving roasting device for steel ladles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110136744.2A CN102218526B (en) | 2011-05-25 | 2011-05-25 | High-efficiency and energy-saving roasting device for steel ladles |
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| Publication Number | Publication Date |
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| CN102218526A true CN102218526A (en) | 2011-10-19 |
| CN102218526B CN102218526B (en) | 2014-03-12 |
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| CN201110136744.2A Expired - Fee Related CN102218526B (en) | 2011-05-25 | 2011-05-25 | High-efficiency and energy-saving roasting device for steel ladles |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903941A (en) * | 2016-06-01 | 2016-08-31 | 江苏永钢集团有限公司 | Online steel ladle roaster |
| CN106270470A (en) * | 2015-05-28 | 2017-01-04 | 鞍钢股份有限公司 | A kind of ladle baking facilities and baking method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2138365C1 (en) * | 1998-01-29 | 1999-09-27 | Открытое акционерное общество "Северсталь" | Method for drying and heating of steel-teeming ladle multilayer lining |
| KR20030021728A (en) * | 2001-09-07 | 2003-03-15 | 주식회사 포스코 | Heating apparatus of tundish for anti heat leak |
| CN2678799Y (en) * | 2004-02-17 | 2005-02-16 | 北京恒拓远博高科技发展有限公司 | High efficiency heat storage ladle baker |
| CN2920484Y (en) * | 2006-07-13 | 2007-07-11 | 武汉市致新材料有限公司 | Steel melting pouring basket high efficiency energy saving roaster |
| CN101251300A (en) * | 2008-03-14 | 2008-08-27 | 江苏焱鑫科技集团有限公司 | Pipe type heating furnace |
| JP2008279480A (en) * | 2007-05-10 | 2008-11-20 | Nippon Furnace Co Ltd | Heat retentive burner apparatus for ladle |
| CN101664679A (en) * | 2009-11-17 | 2010-03-10 | 中国科学院大连化学物理研究所 | Coal bed gas deoxidation catalyst as well as preparation method and application thereof |
| CN101862824A (en) * | 2010-06-12 | 2010-10-20 | 河北文丰钢铁有限公司 | Stretch-in ladle heat exchange roasting nozzle |
-
2011
- 2011-05-25 CN CN201110136744.2A patent/CN102218526B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2138365C1 (en) * | 1998-01-29 | 1999-09-27 | Открытое акционерное общество "Северсталь" | Method for drying and heating of steel-teeming ladle multilayer lining |
| KR20030021728A (en) * | 2001-09-07 | 2003-03-15 | 주식회사 포스코 | Heating apparatus of tundish for anti heat leak |
| CN2678799Y (en) * | 2004-02-17 | 2005-02-16 | 北京恒拓远博高科技发展有限公司 | High efficiency heat storage ladle baker |
| CN2920484Y (en) * | 2006-07-13 | 2007-07-11 | 武汉市致新材料有限公司 | Steel melting pouring basket high efficiency energy saving roaster |
| JP2008279480A (en) * | 2007-05-10 | 2008-11-20 | Nippon Furnace Co Ltd | Heat retentive burner apparatus for ladle |
| CN101251300A (en) * | 2008-03-14 | 2008-08-27 | 江苏焱鑫科技集团有限公司 | Pipe type heating furnace |
| CN101664679A (en) * | 2009-11-17 | 2010-03-10 | 中国科学院大连化学物理研究所 | Coal bed gas deoxidation catalyst as well as preparation method and application thereof |
| CN101862824A (en) * | 2010-06-12 | 2010-10-20 | 河北文丰钢铁有限公司 | Stretch-in ladle heat exchange roasting nozzle |
Non-Patent Citations (2)
| Title |
|---|
| 王春凯等: "蓄热式钢包烘烤系统在鞍钢的应用", 《冶金能源》, vol. 28, no. 3, 31 May 2009 (2009-05-31) * |
| 高靖超: "蓄热式钢包烘烤器的开发与应用", 《炼钢》, vol. 23, no. 5, 31 October 2007 (2007-10-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270470A (en) * | 2015-05-28 | 2017-01-04 | 鞍钢股份有限公司 | A kind of ladle baking facilities and baking method |
| CN105903941A (en) * | 2016-06-01 | 2016-08-31 | 江苏永钢集团有限公司 | Online steel ladle roaster |
| CN105903941B (en) * | 2016-06-01 | 2018-03-27 | 江苏永钢集团有限公司 | Ladle online baking device |
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| Publication number | Publication date |
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| CN102218526B (en) | 2014-03-12 |
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Granted publication date: 20140312 Termination date: 20140525 |