CN102218526B - 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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- CN102218526B CN102218526B CN201110136744.2A CN201110136744A CN102218526B CN 102218526 B CN102218526 B CN 102218526B CN 201110136744 A CN201110136744 A CN 201110136744A CN 102218526 B CN102218526 B CN 102218526B
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- Prior art keywords
- ladle
- dividing plate
- heat
- gas outlet
- exchanger rig
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- 229910000831 Steel Inorganic materials 0.000 title abstract description 13
- 239000010959 steel Substances 0.000 title abstract description 13
- 239000007789 gas Substances 0.000 claims description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 28
- 239000003546 flue gas Substances 0.000 claims description 28
- 238000000746 purification Methods 0.000 claims description 11
- 230000003197 catalytic effect Effects 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 7
- 241000132536 Cirsium Species 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 17
- 239000000779 smoke Substances 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 description 12
- 238000005192 partition Methods 0.000 description 10
- 238000007084 catalytic combustion reaction Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000013459 approach Methods 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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 steelmaking equipment field, especially a kind of ladle heater.
Background technology
Because iron and steel is produced the attention to quality and cost, for ladle, ladle and pans baking temperature and energy consumption, more higher requirements have also been proposed.Ladle baking also to need to be guaranteed to the uniformity of baking temperature to higher temperature on the one hand simultaneously, also will reduce as far as possible on the other hand energy consumption, reduce environmental pollution.
The roaster that domestic iron and steel enterprises generally adopts is at present telescopic or metal self-preheating type roaster.Its shortcoming is: energy consumption is high, baking 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, due to 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.By 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 discharge, significantly improved the efficiency of flue gas waste heat recovery, make combustion air and gas preheating to unprecedented high temperature (being greater than 1000 ℃), exhaust gas temperature is down to 100 ℃ of left and right.Flame is more stable, and temperature is more even, and the discharge capacity of pollutant is lower.New Regenerative combustion technology has very significant advantage, shows as: 1. can use low-calorie fuel.2. can save the energy 50%～70%; 3. baking speed improves 3～5 times; 4. disposal of pollutants can reduce more than 50%; 5. fastening structure, controls flexibly, and applicability is strong; 6. investment is short return period, and benefit is high.Compare with traditional combustion technology, novel high preheat temperature Regenerative Combustion Technology has unrivaled advantage in all fields, can say, it is the flue gas revolution in combustion technology.
At present, the heat storing type ladle baker of domestic newly-built continuous casting workshop all adopts traditional two burner alternation schemes, and owing to not taking into full account 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 being new technique, therefore, the equipment such as heating furnace, burner do not adapt to its requirement yet, remains the problem with operating aspect in design.(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 more than ten years put into practice ，Ge large enterprises and unit not to originally having hankered after Regenerative Combustion Technology like that.At present, the arguement between opposition and support is very fierce.
Summary of the invention
In order to overcome the deficiency that efficiency of combustion is lower, heat utilization efficiency is lower, the feature of environmental protection is poor of existing ladle heater, the invention provides the ladle high-efficiency energy-saving baking device 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:
A kind of ladle high-efficiency energy-saving baking device, comprise ladle inclusion, clad is installed in described ladle inclusion top seal, described clad is provided with nozzle and exhanst gas outlet, in described ladle inclusion, establish dividing plate, ladle interior separation into two, 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 described dividing plate bottom and the bottom of 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 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 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 arranged symmetrically with centered by described dividing plate.
Described clad and described dividing plate are one.
Described apparatus for baking is also 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 described heat-exchanger rig and the passage between exhanst gas outlet are for flue gas circulation, and the passage between air intlet and air outlet slit, for circulation of air, is recycled the waste heat in flue gas, realizes air preheat.
Described exhanst gas outlet arranges 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; If be provided with heat-exchanger rig, Pd-Rh-Pt arrangement for catalytic purification is arranged on to chimney place.
Technical conceive of the present invention is: in existing technical foundation, conclude and improve, this baking technology relates to pre-recuperation of heat, catalytic combustion and purification and high-temperature flue gas recycles etc., break through original baking technology concept, no longer be confined to a certain combustion technology, but an integration of these technology.It has the feature that efficiency of combustion is high, heat utilization efficiency is high and noxious gas emission is few this project technology, has that flue-gas temperature is adjustable, a characteristic of temperature rise good uniformity and fast baking simultaneously, and inclusion upper and lower temperature difference is little.
Beneficial effect of the present invention is mainly manifested in: 1, by introduce the mode of internal partition in bag, form a complete flue gas flow channel, allow hot flue gas flow along ladle wall, homogeneous heating ladle inner wall, take away steam, ladle internal partition adopts high far-infrared composite material preparation simultaneously, also can apply far ultrared paint on its surface, make it to absorb the energy in flue gas, with the mode oven wall of far infrared radiation, improve heat utilization efficiency, and introduce arrangement for catalytic purification for reducing CO and NOx discharge; 2, take full advantage of the high-temperature residual heat of the rear flue gas of burning, improve combustion gas service efficiency, fast baking, energy-conservation more than 50% than conventional roaster, in addition, reduced to greatest extent pollutant emission, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ladle high-efficiency energy-saving baking device of embodiment 1.
Fig. 2 is the structural representation of the ladle high-efficiency energy-saving baking device of embodiment 2.
Fig. 3 is the structural representation of the ladle high-efficiency energy-saving baking device of embodiment 3.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1, a kind of ladle high-efficiency energy-saving baking device, 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, ladle interior separation into two in described ladle inclusion, 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 surface to be coated with far infrared radiation coating thistle board.
Described dividing plate 6 is spliced by 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 arranged symmetrically with centered by described dividing plate 6.
Described clad and described dividing plate 6 are one, certainly, also both can be fixed together.
Described apparatus for baking is also 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 described heat-exchanger rig and the passage between exhanst gas outlet are for flue gas circulation, and the passage between air intlet and air outlet slit, for circulation of air, is recycled the waste heat in flue gas, realizes air preheat.
Described exhanst gas outlet 7 arranges 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; If be provided with heat-exchanger rig, Pd-Rh-Pt arrangement for catalytic purification is arranged on to chimney place.
Between ladle clad and inclusion, adopt fibre block to seal.
This roaster comprises that 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 form.Coal gas is from fuel gas inlet 3 inputs, coal gas and combustion air premix are ejected in ladle internal combustion by nozzle, also can in catalyzed honeycomb, after catalytic combustion, enter ladle, flue gas after burning can not flow out ladle at once, but the flue forming along ladle internal partition is mobile, the flue gas passageway forming by bottom of steel ladle and dividing plate downwards before this, then upwards entered the smoke inlet that is arranged on the heat exchanger on clad, carry out heat exchange with the cold air in heat exchanger, cooling rear discharge.
With reference to Fig. 2, in the present embodiment, described exhaust gases passes is the gap between described dividing plate 6 bottoms and the bottom of described ladle inclusion.
Described apparatus for baking is also provided with hot smoke circulating device, between the import of described nozzle 4 and exhanst gas outlet, is provided with connection arm, and hot smoke circulating device 9 is set on described connection arm, the flue gas of exhanst gas outlet 7 directly can be back in nozzle 4.
Other structures of the present embodiment are all identical with embodiment 1.
This roaster comprises that ladle inclusion, bag internal partition, clad, burner, catalytic combustion honeycomb, heat exchanger, arrangement for catalytic purification and hot smoke circulating device form.Coal gas and combustion air premix are ejected in ladle internal combustion by nozzle, also can in catalyzed honeycomb, after catalytic combustion, enter ladle, flue gas after burning can not flow out ladle at once, but flow with the flue forming along ladle internal partition, the flue gas passageway forming by bottom of steel ladle and dividing plate downwards before this, then upwards enter the smoke inlet that is arranged on the heat exchanger on clad, carry out heat exchange with the cold air in heat exchanger, cooling rear discharge.Also hot flue gas can be entered to ladle for heating ladle again by hot smoke circulating device, 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 introduce the mode of internal partition in bag, allow hot flue gas flow along ladle wall, homogeneous heating ladle inner wall, take away steam, ladle internal partition adopts high far-infrared composite material preparation simultaneously, also can apply far ultrared paint on its surface, make it to absorb the energy in flue gas, with far mode oven wall, improve heat utilization efficiency, and introduce arrangement for catalytic purification for reducing CO and NO
x.This device takes full advantage of the high-temperature residual heat of the rear flue gas of burning, improves combustion gas service efficiency, and fast baking is energy-conservation more than 50% than conventional roaster, in addition, has reduced to greatest extent pollutant emission, 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 the present embodiment are all identical with embodiment 1.
This roaster comprises that ladle inclusion, bag internal partition, clad, burner, catalytic combustion honeycomb, heat exchanger, arrangement for catalytic purification and hot smoke circulating device form.Coal gas and combustion air enter ladle in catalyzed honeycomb after catalytic combustion, flue gas after burning can not flow out ladle at once, but the flue forming along ladle internal partition flows, the flue gas passageway forming by bottom of steel ladle and dividing plate downwards before this, then upwards enter the smoke inlet that is arranged on the heat exchanger on clad, carry out heat exchange with the cold air in heat exchanger, cooling rear discharge.
Content described in this description embodiment is only 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 and in those skilled in the art, according to the present invention, conceive the equivalent technologies means that can expect.
Claims (5)
1. a ladle high-efficiency energy-saving baking device, comprise 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, in described ladle inclusion, establish dividing plate, ladle interior separation into two, flue gas passageway is left in the bottom of described ladle inclusion, described nozzle and exhanst gas outlet lay respectively at the both sides of dividing plate, described exhaust gases passes is the gap between described dividing plate bottom and the bottom of described ladle inclusion, a plurality of semicircle breach of described dividing plate bottom, described apparatus for baking is also provided with heat-exchanger rig, described exhanst gas outlet is communicated with an import of described heat-exchanger rig, the secondary import of described heat-exchanger rig is communicated with atmosphere, the secondary outlet of described heat-exchanger rig is communicated with described nozzle, the once outlet of described heat-exchanger rig is communicated with chimney, described exhanst gas outlet arranges Pd-Rh-Pt arrangement for catalytic purification.
2. ladle high-efficiency energy-saving baking device as claimed in claim 1, is characterized in that: described dividing plate adopts surface to be coated with far infrared radiation coating thistle board or adopts the carbofrax material preparation of high radiation character.
3. ladle high-efficiency energy-saving baking device as claimed in claim 1, is characterized in that: described dividing plate is spliced or is formed for single monoblock dividing plate by polylith separator unit.
4. ladle high-efficiency energy-saving baking device as claimed in claim 1, is characterized in that: described nozzle and exhanst gas outlet are arranged symmetrically with centered by described dividing plate.
5. ladle high-efficiency energy-saving baking device as claimed in claim 1, is characterized in that: described clad and described dividing plate are one.
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 |
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| 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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| CN102218526A CN102218526A (en) | 2011-10-19 |
| CN102218526B true 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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270470B (en) * | 2015-05-28 | 2019-03-26 | 鞍钢股份有限公司 | Baking method of ladle baking device |
| 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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|---|---|---|---|---|
| RU2138365C1 (en) * | 1998-01-29 | 1999-09-27 | Открытое акционерное общество "Северсталь" | Method for drying and heating of steel-teeming ladle multilayer lining |
| 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 |
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| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100424812B1 (en) * | 2001-09-07 | 2004-03-30 | 주식회사 포스코 | Heating apparatus of tundish for anti heat leak |
| JP4540125B2 (en) * | 2007-05-10 | 2010-09-08 | 日本ファーネス株式会社 | Regenerative burner device 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 |
| CN101664679B (en) * | 2009-11-17 | 2012-09-12 | 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 |
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2011
- 2011-05-25 CN CN201110136744.2A patent/CN102218526B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| RU2138365C1 (en) * | 1998-01-29 | 1999-09-27 | Открытое акционерное общество "Северсталь" | Method for drying and heating of steel-teeming ladle multilayer lining |
| 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 |
| 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 (5)
| Title |
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