CN101694354A - Combustion settling chamber of electric stove fume - Google Patents
Combustion settling chamber of electric stove fume Download PDFInfo
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- CN101694354A CN101694354A CN200910191168A CN200910191168A CN101694354A CN 101694354 A CN101694354 A CN 101694354A CN 200910191168 A CN200910191168 A CN 200910191168A CN 200910191168 A CN200910191168 A CN 200910191168A CN 101694354 A CN101694354 A CN 101694354A
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- settling chamber
- combustion
- electric stove
- combustion settling
- stove fume
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention belongs to the technical field of separation and relates to a combustion settling chamber of electric stove fume. The combustion settling chamber has the functions of removing dust of fume, storing heat, promoting the complete combustion of CO and the like. The adopted settling chamber comprises a fume inlet, an air inlet and a fume outlet and is characterized by arranging a heat storage wall in a combustion chamber. The settling chamber can act on the electric stove fume in removing dust, storing heat and promoting the complete combustion of CO, is beneficial to the sensible heat recovery of electric stove fume, is a significant technology in the recovery of waste heat and emission reduction of smoke dust and CO for an electric steel plant, and has higher economic and social benefits, as well as stronger popularizing value.
Description
Technical field
The invention belongs to separation technology field, relate to a kind of combustion settling chamber of electric stove fume, this combustion settling chamber has functions such as flue gas ash removal, accumulation of heat and promotion CO after-flame.
Background technology
Produce a large amount of flue gases in the process of electric furnace steel making, be subjected to the influence of process for making process, in the steel-making cycle, the flow of electric furnace flue gas, composition and temperature be fluctuation in time all.In order to cool off the flue gas that electric furnace steel making produces, adopt the water-cooled flue cooling usually, consume a large amount of water, electric energy.In order to reclaim the sensible heat of electric furnace flue gas, also can adopt the mode of vaporization cooling to produce steam, because the fluctuation of electric furnace flue gas has brought difficulty for the setting of evaporated cooling system.
The dustiness of electric furnace flue gas is bigger, and has the characteristics of light, thin, greatly dispersed and mobile difference, very easily is bonded on the heat-transfer surface of evaporated cooling system.Usually the combustion settling chamber that adopts adopts the method sedimentation flue dust that increases circulation area, reduces flue gas flow rate at present, the combustion settling chamber that adopts in the engineering is generally simple rectangular structure at present, inside is the cuboid space, when flowing through combustion settling chamber, flue gas increases because of flow area, flowing velocity reduces, and oarse-grained dust deposition is got off.Traditional combustion settling chamber dust removing effects is relatively poor, and particularly relatively poor to the stronger fine grained dust removing effects of caking property, the combustion settling chamber temperature is with electric furnace smelting cycle acute variation.
Contain a spot of CO (usually in 10%) in the electric furnace flue gas, the CO of low concentration does not have recovery value, if but effective after-flame may set off an explosion, and the CO that diffuses also can cause pollution.The combustion characteristics of CO is subjected to the influence of factors such as temperature, oxygen concentration, the time of staying, usually the combustion settling chamber that adopts is not considered the after-flame problem of CO from chemical kinetics at present, do not take measures to reduce CO concentration from modes such as reaction temperature, CO and Air mixing, CO concentration is higher when causing the electric furnace flue gas discharging.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of combustion settling chamber of electric stove fume is provided, this expansion chamber has the function of flue gas ash removal, accumulation of heat and promotion CO after-flame simultaneously, helps the waste heat recovery of electric furnace flue gas.
Main solution of the present invention is achieved in that
The combustion settling chamber of electric stove fume that the present invention adopts comprises smoke inlet, air inlet and exhaust opening, it is characterized in that: Heat Storing Wall is set in the combustion chamber.
Furnace lid water-cooled elbow, water-cooled sliding sleeve are connected with smoke inlet, and during electric furnace steel making, electric furnace flue gas imports to combustion settling chamber by smoke inlet.One or more layers Heat Storing Wall is set in the combustion chamber, and Heat Storing Wall is made up of heat-storing material, and when the electric furnace flue gas temperature was higher, electric furnace flue gas was heated when flowing through Heat Storing Wall, and the electric furnace flue gas temperature reduces; Along with the fluctuation of electric furnace flue gas temperature, when the electric furnace flue gas temperature was low, electric furnace flue gas was heated by Heat Storing Wall when flowing through Heat Storing Wall, and temperature raises.Owing to the accumulation of heat effect of Heat Storing Wall, can regulate and control to enter the electric furnace flue gas temperature of evaporated cooling system.
Resistance when flowing through Heat Storing Wall in order to reduce electric furnace flue gas, Heat Storing Wall is built into by gitter brick, and stays exhaust gases passes between gitter brick.Also can on Heat Storing Wall, arrange grain bed; particle in the grain bed is made by heat-storing material; particle had both played the effect of accumulation of heat; all right dust removal by filtration; reduce the electric furnace flue gas dustiness that enters gasification cooling flue; help protecting the heat-transfer surface of gasification cooling flue, prolong gasification cooling flue service life.Ash discharging hole is set between Heat Storing Wall regularly gets rid of electric furnace dust, blowing pipe is set after Heat Storing Wall, utilize the mode cleaned at regular intervals Heat Storing Wall of blowback.
The sidewall of combustion settling chamber of electric stove fume is provided with one or more air inlets, and air inlet is provided with control valve outward.During electric furnace steel making,, guarantee the burning of CO by the air capacity of control valve control importing combustion settling chamber.
In the temperature range of electric furnace flue gas, the burn rate of CO is influenced with the situation of mixing of oxygen by temperature and CO mainly.CO and oxygen reaction generate CO
2Reaction be exothermic reaction, lower temperature helps reaction and carries out thoroughly, but higher temperature can be accelerated the speed of CO combustion reaction again, therefore has the optimum temperature of a CO after-flame.The present invention is provided with the water-cooled heat exchanger tube on the combustion settling chamber of electric stove fume interior wall, by the temperature of water-cooled heat exchanger tube to the cooling effect reduction flue gas of flue gas, the flue-gas temperature that makes the combustion settling chamber outlet is within the optimum temperature range that helps the CO after-flame.When carrying out the design of combustion settling chamber, after the optimum temperature of determining the CO after-flame, determine to be arranged in the quantity of the water-cooled heat exchanger tube in the combustion settling chamber according to heat Balance Calculation.Be arranged in water-cooled heat exchanger tube on the combustion settling chamber interior wall and can be used as the part of electric furnace flue gas waste heat recovery evaporated cooling system.
The present invention also is provided with on the side wall under the electric furnace flue gas exhaust opening and mixes the cigarette angle, mixes the flow field that the cigarette angle can change electric furnace flue gas, promotes the mixing of CO and oxygen, helps the after-flame of CO.
The present invention has following advantage:
1) to the accumulation of heat effect of electric furnace flue gas, compares, increased the thermal inertia in the combustion settling chamber, reduce the influence of electric furnace flue gas temperature fluctuation the waste-heat recovery device evaporated cooling system with the traditional combustion expansion chamber of hollow;
2) employing changes temperature in the combustion settling chamber, adds modes such as mixing the cigarette angle, promotes CO in the combustion settling chamber internal combustion;
3) Heat Storing Wall can adopt stratum granulosum; utilize the granular bed filter dedusting technology; adopt on the basis that reduces flow velocity sedimentation flue dust at the traditional combustion expansion chamber; further reduce the electric furnace flue gas dustiness that enters gasification cooling flue; help protecting the heat-transfer surface of gasification cooling flue, prolong gasification cooling flue service life.
In sum, the present invention can play the effect of dedusting, dedusting, accumulation of heat and promotion CO after-flame to electric furnace flue gas, helping that electric furnace flue gas is carried out sensible heat reclaims, be electric steel plant waste heat recovery and the important technology that reduces flue dust, CO discharging, have high economic benefit and social benefit, have stronger promotional value.
Description of drawings
Fig. 1 is a main cutaway view of the present invention;
Fig. 2 is a vertical view of the present invention.
The specific embodiment
The invention will be further described below in conjunction with the specific embodiment of attached Fig. 1 and 2.
Combustion settling chamber of electric stove fume comprises smoke inlet 3, air inlet 1 and exhaust opening 4, and Heat Storing Wall 2 is set in the combustion chamber; Heat Storing Wall 2 adopts one or more layers gitter brick to be built into, and leaves exhaust gases passes between the gitter brick.Blowing pipe 7 is set after the Heat Storing Wall 2.Ash discharging hole 6 is set between the Heat Storing Wall 2.Control valve 6 is set on the air inlet 1.On the side wall under the electric furnace flue gas exhaust opening 4, be provided with and mix cigarette angle 5.Water-cooled heat exchanger tube 9 is set on indoor wall.
During electric furnace work, electric furnace flue gas imports to combustion settling chamber by smoke inlet 3.When the electric furnace flue gas temperature is higher, heating Heat Storing Wall 2 when electric furnace flue gas is flowed through Heat Storing Wall 2, the electric furnace flue gas temperature reduces; Along with the fluctuation of electric furnace flue gas temperature, when the electric furnace flue gas temperature was low, electric furnace flue gas was heated by Heat Storing Wall 2 when flowing through Heat Storing Wall 2, and temperature raises.Owing to the accumulation of heat effect of Heat Storing Wall 2, can regulate and control to enter the electric furnace flue gas temperature of evaporated cooling system.Wherein Heat Storing Wall 2 is built into by gitter brick, and stays exhaust gases passes between gitter brick.Ash discharging hole 6 is set between Heat Storing Wall 2 regularly gets rid of electric furnace dust,, utilize the mode cleaned at regular intervals Heat Storing Wall 2 of blowback at the blowing pipe 7 that Heat Storing Wall 2 backs are provided with.The sidewall of combustion settling chamber of electric stove fume is provided with one or more air inlets 1, and air inlet is provided with control valve 8 outward.During electric furnace steel making,, guarantee the burning of CO by the air capacity of control valve 8 control importing combustion settling chambers.The water-cooled heat exchanger tube 9 that is provided with on the combustion settling chamber interior wall, by the temperature of water-cooled heat exchanger tube to the cooling effect reduction flue gas of flue gas, the flue-gas temperature that makes the combustion settling chamber outlet is within the optimum temperature range that helps the CO after-flame.Be arranged in water-cooled heat exchanger tube on the combustion settling chamber interior wall as the part of electric furnace flue gas waste heat recovery evaporated cooling system.In addition, the mixed cigarette angle 5 that is provided with on the side wall under the electric furnace flue gas exhaust opening 4 can change the flow field of electric furnace flue gas, promotes the mixing of CO and oxygen, helps the after-flame of CO.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the present invention program's the scope.
Claims (8)
1. a combustion settling chamber of electric stove fume comprises smoke inlet (3), air inlet (1) and exhaust opening (4), it is characterized in that: Heat Storing Wall (2) is set in the combustion chamber.
2. combustion settling chamber of electric stove fume according to claim 1 is characterized in that: described Heat Storing Wall (2) adopts one or more layers gitter brick to be built into, and leaves exhaust gases passes between the gitter brick.
3. combustion settling chamber of electric stove fume according to claim 2 is characterized in that: described Heat Storing Wall (2) goes up arranges grain bed.
4. combustion settling chamber of electric stove fume according to claim 1 is characterized in that: blowing pipe (7) is set after described Heat Storing Wall (2).
5. combustion settling chamber of electric stove fume according to claim 2 is characterized in that: ash discharging hole (6) is set between described Heat Storing Wall (2).
6. combustion settling chamber of electric stove fume according to claim 1 is characterized in that: control valve (6) is set on the described air inlet (1).
7. combustion settling chamber of electric stove fume according to claim 1 is characterized in that: be provided with on the side wall under the electric furnace flue gas exhaust opening (4) and mix cigarette angle (5).
8. combustion settling chamber of electric stove fume according to claim 1 is characterized in that: water-cooled heat exchanger tube (9) is set on indoor wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101911684A CN101694354B (en) | 2009-10-20 | 2009-10-20 | Combustion settling chamber of electric stove fume |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101911684A CN101694354B (en) | 2009-10-20 | 2009-10-20 | Combustion settling chamber of electric stove fume |
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| CN101694354A true CN101694354A (en) | 2010-04-14 |
| CN101694354B CN101694354B (en) | 2011-08-31 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338567A (en) * | 2011-08-29 | 2012-02-01 | 中冶赛迪工程技术股份有限公司 | Combustion settling chamber |
| CN102534111A (en) * | 2012-01-19 | 2012-07-04 | 苏州海陆重工股份有限公司 | Combustion settling chamber for electric furnace steel making |
| CN104061793A (en) * | 2014-04-30 | 2014-09-24 | 上海宝钢节能环保技术有限公司 | Step-by-step waste heat recovery system and method for electric furnace flue gas on whole temperature section |
| CN106482533A (en) * | 2016-11-28 | 2017-03-08 | 中国科学院过程工程研究所 | A kind of gas cleaning and heat-exchange integrated device |
| CN108678793A (en) * | 2018-04-24 | 2018-10-19 | 中国矿业大学(北京) | A kind of return air residual heat in mine recovery system |
| CN110686521A (en) * | 2019-11-20 | 2020-01-14 | 中冶南方工程技术有限公司 | Electric furnace flue gas waste heat utilization method and system |
| CN111735305A (en) * | 2020-07-27 | 2020-10-02 | 宁夏乐天碳素有限公司 | Flue gas recovery device of carbonization furnace |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3395512A (en) * | 1966-03-21 | 1968-08-06 | Universal Oil Prod Co | Method and means for cooling and cleaning hot converter gases |
| CN1138676A (en) * | 1995-06-16 | 1996-12-25 | 东方锅炉厂 | Garbage incineration furnace |
| AT412579B (en) * | 2003-09-23 | 2005-04-25 | Voest Alpine Ind Anlagen | METHOD OF COLLECTING AND TREATING REACTION GASES FROM A PRODUCTION FACILITY FOR MELT LIQUID METALS AND DUST REMOVERING SYSTEM THEREFOR |
| CN201106856Y (en) * | 2007-06-06 | 2008-08-27 | 江西省陶研所海泰窑炉开发中心 | Dual-purpose apparatus for flue gas purification and utilization of waste heat |
| CN201179403Y (en) * | 2007-08-06 | 2009-01-14 | 山东省冶金设计院有限责任公司 | Heat recovering device and dust removing system with the heat recovering device |
-
2009
- 2009-10-20 CN CN2009101911684A patent/CN101694354B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338567A (en) * | 2011-08-29 | 2012-02-01 | 中冶赛迪工程技术股份有限公司 | Combustion settling chamber |
| CN102534111A (en) * | 2012-01-19 | 2012-07-04 | 苏州海陆重工股份有限公司 | Combustion settling chamber for electric furnace steel making |
| CN104061793A (en) * | 2014-04-30 | 2014-09-24 | 上海宝钢节能环保技术有限公司 | Step-by-step waste heat recovery system and method for electric furnace flue gas on whole temperature section |
| CN106482533A (en) * | 2016-11-28 | 2017-03-08 | 中国科学院过程工程研究所 | A kind of gas cleaning and heat-exchange integrated device |
| CN106482533B (en) * | 2016-11-28 | 2019-01-01 | 中国科学院过程工程研究所 | A kind of gas cleaning and heat-exchange integrated device |
| CN108678793A (en) * | 2018-04-24 | 2018-10-19 | 中国矿业大学(北京) | A kind of return air residual heat in mine recovery system |
| CN110686521A (en) * | 2019-11-20 | 2020-01-14 | 中冶南方工程技术有限公司 | Electric furnace flue gas waste heat utilization method and system |
| CN111735305A (en) * | 2020-07-27 | 2020-10-02 | 宁夏乐天碳素有限公司 | Flue gas recovery device of carbonization furnace |
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| CN101694354B (en) | 2011-08-31 |
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