CN102620572A - Ferroalloy mine heat furnace system with waste heat power generation system - Google Patents
Ferroalloy mine heat furnace system with waste heat power generation system Download PDFInfo
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- CN102620572A CN102620572A CN2012101103256A CN201210110325A CN102620572A CN 102620572 A CN102620572 A CN 102620572A CN 2012101103256 A CN2012101103256 A CN 2012101103256A CN 201210110325 A CN201210110325 A CN 201210110325A CN 102620572 A CN102620572 A CN 102620572A
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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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Abstract
A ferroalloy mine heat furnace system with a waste heat power generation system comprises a motor control system, an electrode slipping device, an electrode positioning system, a charging system, iron tapping equipment, a protection facility, an electrode water cooling system, a waste heat recovery power generation system and a dust collecting system, wherein the waste heat recovery power generation system recovers the high-temperature flue gas generated during the production process of the ferroalloy mine heat furnace system, generates steam through a waste heat boiler and drives a supporting steam turbine generator set to generate electricity. Through additional arrangement of waste heat recovery power generation system, the ferroalloy mine heat furnace system provided by the invention not only recovers flue gas and avoids secondary energy waste, but also reduces the thermal pollution of high-temperature flue gas to the working environment of workers, and is the novel ferroalloy mine heat furnace system which meets the development mode of circular economy.
Description
Technical field
The present invention relates to a kind of ferroalloy submerged arc furnace system that has afterheat generating system.
Background technology
The production method of ferroalloy has blast furnace process, ore deposit heat furnace method, perrin process, vacuum resistance oven process and oxygen coverter method etc. according to the device class of using.Wherein, the ore deposit heat furnace method is the main method that ferroalloy is produced, and about 72% is to produce with this method in the ferroalloy output.The ore deposit heat furnace method is to make reducing agent with charcoal to produce ferroalloy, and used electric furnace is used ore reduction stove (being called for short the hot stove in ore deposit) always.The source of heat is an electric energy in the smelting process, makes reducing agent with charcoal.
The plant equipment of the hot stove in ferroalloy ore deposit is more numerous and diverse, comprises mainly that except that the hot furnace body in ore deposit electrode holder system, electrode press device, rise fall of electrodes system, charging system, the equipment that taps a blast furnace, protective equipment, electrode water-cooling system etc.Protective equipment mainly is meant the dust pelletizing system that flue dust carries out dedusting through petticoat pipe, chimney, emptying or access deduster.
In ferroalloy mine heat furnace smelting process, being attended by a large amount of CO gas produces.In semiclosed furnace, the few part in these CO gases rising pass in the furnace charge process with raw material in oxide react, be reduced to low oxide to high oxide, self is oxidized to CO
2Major part is then directly burnt at fire door and is changed CO into
2Gas.The ferroalloy trade mark is different, and the CO gas flow of generation is difference to some extent.With the silicomanganese alloy is example, and the CO gas flow that product per ton produces is approximately 750m
3These CO directly burn and emit the heat of about 9,370,000 kilojoules, amount to electric energy 2600 kilowatt hours, are equivalent to melting electric consumption about 65%.
As shown in Figure 1; The ferroalloy submerged arc furnace system comprises the hot furnace body 4 in ore deposit in the traditional handicraft; Be the charging system 1 of hot furnace body 4 feed in ore deposit, be used to raw materials heating in the hot furnace body in ore deposit 4 electrode holder, press and jacking system 2, be used for the system of tapping a blast furnace 5 that the Railway transportation after the melting is gone out; Be used to the electrode water-cooling system 3 and the high-temperature flue 6 that is used for hot furnace body 4 high-temperature flue gas in discharging ore deposit of electrode cooling, with the dust pelletizing system etc. that is connected and is high temperature fume dust removal with high-temperature flue.Wherein, dust pelletizing system comprises surface cooler 18, deduster 15, dedusting fan 16 and the blowdown stack 17 that connects successively; Wherein showing cold air links to each other with the high-temperature flue gas floss hole of the hot furnace body 4 in ore deposit through high-temperature flue 6.High-temperature flue 6 is a steel light pipe flue; High-temperature flue 6 with high-temperature flue gas by deriving in the hot furnace body 4 in ore deposit; And high-temperature flue gas is delivered in the surface cooler 18 cooling, and then through deduster 15 dedustings, and be input in the blowdown stack 17 by dedusting fan 16 and enter atmosphere.Processing mode to high-temperature flue gas in the prior art makes a large amount of valuable flue gas heat in steel light pipe flue 6 and surface cooler 18, be lost in the atmosphere, has not only wasted valuable residual heat resources, has also caused the thermal pollution of workman's production environment.
Summary of the invention
To existing problem in the prior art; The object of the invention provides a kind of ferroalloy submerged arc furnace system that has afterheat generating system; This ferroalloy submerged arc furnace system is except each part that comprises traditional handicraft ferroalloy submerged arc furnace system, and also newly-increased waste heat recovery and electricity generation system reclaim the waste heat of the high-temperature flue gas that produces in the hot stove production process in ferroalloy ore deposit; Produce steam through waste heat boiler, and drive supporting steam turbine generating set generating.Advantage of the present invention is: the one, and the waste heat of recovery flue gas is avoided the waste of secondary energy sources, and the 2nd, reduce the thermal pollution of high-temperature flue gas to workman's production environment.
For realizing above-mentioned purpose; A kind of ferroalloy submerged arc furnace system that has afterheat generating system of the present invention comprises the hot furnace body in ore deposit, is the charging system of the hot furnace body feed in said ore deposit; Be used to raw material heating in the hot furnace body in ore deposit electrode holder, press and jacking system; Be used for the system of tapping a blast furnace that the iron after the melting is transported by circuit body; Be used to electrode cooling the electrode water-cooling system, be used for high-temperature flue that the hot furnace body flue gas in ore deposit is discharged, be connected and high-temperature flue gas carried out the dust pelletizing system and the afterheat generating system of dedusting with high-temperature flue; Said dust pelletizing system links to each other with the fume emission mouth of the hot furnace body in said ore deposit through high-temperature flue; Said afterheat generating system is arranged between said high-temperature flue and the deduster, the generating set that comprises waste heat boiler, is made up of steam turbine and generator; Said waste heat boiler will generate saturation water by the high-temperature flue gas conversion that emits in the hot furnace body in ore deposit, and said saturation water rises and enters in the drum of waste heat boiler, and in said drum, carry out producing carbonated drink separation steam; Said steam feeds steam turbine expansion acting, drawing generator generating simultaneously.
Further, drain into atmosphere through the said high-temperature flue gas after the said waste heat boiler cooling through said dust pelletizing system.
Further, said ferroalloy submerged arc furnace system also comprises cooling water treatment system, and this system is arranged between said steam turbine and the said waste heat boiler, comprises condenser, condensate pump, oxygen-eliminating device and feed pump; Exhaust steam after the said steam turbine acting, is sent into waste heat boiler via said feed pump again and is carried out waterpower circulation next time after said condensate pump gets into said oxygen-eliminating device deoxygenation by said condenser condenses.
Further, between said high-temperature flue and the said deduster, the also parallelly connected surface cooler that is provided with said waste heat boiler; And on said high-temperature flue, set up Flue valve; When said waste heat boiler moves, the pathway closure that is connected with surface cooler, high-temperature flue gas enters into waste heat boiler; When waste heat boiler overhauled, the pathway closure that is connected with waste heat boiler, high-temperature flue gas get in the surface cooler lowered the temperature.
Further, described high-temperature flue is the interior insulation flue of insulation form in adopting, the heat-resistance stainless steel flue or the gasification cooling flue of the outer insulation of employing.
Further, said waste heat boiler is horizontal boiler or vertical boiler.
The advantage of patent of the present invention is: replaceable steel light pipe flue and the surface cooler that falls in the traditional handicraft of insulation flue and waste heat boiler in utilizing; Not only can reclaim the hot fume afterheat in ore deposit is used; Practice thrift secondary energy sources; And reduced the thermal pollution that hot driving causes production environment, and produce steam in addition and can be used for generating, export the power resource of convenient use.
Description of drawings
Fig. 1 is a ferroalloy submerged arc furnace system structural representation in the prior art
Fig. 2 has the ferroalloy submerged arc furnace system process chart of afterheat generating system for the present invention;
Fig. 3 has the ferroalloy submerged arc furnace system process chart of surface cooler as the afterheat generating system bypass for the present invention.
The specific embodiment
As shown in Figure 2, the ferroalloy submerged arc furnace system that has afterheat generating system in the present embodiment comprises: charging system 1, electrode holder, press and the hot furnace body of jacking system 2, electrode water-cooling system 3, ore deposit 4, the system of tapping a blast furnace 5, afterheat generating system and dust pelletizing system etc.Wherein afterheat generating system comprises: high-temperature flue 6, waste heat boiler 7, electricity generation system and water treatment system etc.Wherein electricity generation system comprises steam turbine 9 and generator 10, and water treatment system comprises condenser 11, condensate pump 12, oxygen-eliminating device 13 and feed pump 14; Dust pelletizing system comprises dedusting fan 16, blowdown stack 17.The heat-resistance stainless steel flue or the gasification cooling flue of the interior insulation flue of insulation form, the outer insulation of employing in high-temperature flue 6 can adopt.Waste heat boiler 7 can be vertical boiler or horizontal boiler.
Waste heat boiler 7 links to each other with the exhanst gas outlet of the hot furnace body 4 in ore deposit through high-temperature flue 6; High-temperature flue gas A by discharging in the hot furnace body 4 in ore deposit is input in the waste heat boiler 7 as thermal source; The steam that waste heat boiler 7 is produced is through drum 8 outputs, and drum 8 connects with the main inlet throttle-stop valve of steam turbine 9 through pipeline, and steam is input in the steam turbine 9; And the acting of in steam turbine 9, expanding, drive generator 10 work.The exhaust steam (low-pressure steam) that steam after the acting forms is drained in the closed cycle loop of being made up of condenser 11, cooling tower (not shown) and water circulating pump (not shown) through pipeline carries out condensation.Form the hot well that condensed water flows into condenser 11, entering into oxygen-eliminating device 13 deoxygenations via the pipeline that is provided with condensate pump 12, the water of process deoxygenation is input in the waste heat boiler 7 through the pipeline that is provided with boiler feed pump 14 again, accomplishes whole operation cycle.The exhaust opening of waste heat boiler 7 links to each other with former mineral heating furnace flue dust pelletizing system, and the flue gas B that waste heat boiler 7 is discharged directly enters into the deduster 15 of former mineral heating furnace flue dust pelletizing system, and the suction through dedusting fan 16 gets into blowdown stack 17 and enters atmosphere more afterwards.
As shown in Figure 3; Basic identical among the composition of the ferroalloy submerged arc furnace system in the present embodiment and version and the embodiment 1; Its difference is also to be provided with surface cooler 18 in the ferroalloy submerged arc furnace system in the present embodiment, and this surface cooler 18 is arranged between high-temperature flue gas pipeline 6 and the dust pelletizing system as the bypass of afterheat generating system is parallelly connected with afterheat generating system.This system keeps the surface cooler 18 in the intrinsic mineral heating furnace flue dust pelletizing system; Make the parallelly connected bypass of waste heat boiler 7 as surface cooler 18; When waste heat boiler 7 operations; Close surface cooler 18 these branch roads and open waste heat boiler 7 these branch roads through the operation Flue valve, the heat of the hot stove high-temperature flue gas in ore deposit is cemented out from waste heat boiler 7; When waste heat boiler 7 maintenance, open surface cooler 18 these branch roads and close waste heat boiler 7 these branch roads through the operation Flue valve, the heat of the hot stove high-temperature flue gas in ore deposit is cemented out from surface cooler 18.When waste heat boiler 7 maintenance, do not influence the ordinary production of the hot stove in ferroalloy ore deposit like this.
Because the dust granules degree in the ferroalloy mineral heating furnace flue is very little, viscosity is very high again; The ash-clearing technology that described waste heat boiler adopts is very crucial; Can adopt the dust cleaning form of a certain Mechanical Contact formula (like scraper plate, the ball that falls, wire brush etc.), also can adopt the purge mode of multiple indirectly-acting (like rapping, sound wave, shock wave etc.) to combine.
Claims (6)
1. a ferroalloy submerged arc furnace system that has afterheat generating system comprises the hot furnace body in ore deposit, is the charging system of the hot furnace body feed in said ore deposit; Be used to raw material heating in the hot furnace body in ore deposit electrode holder, press and jacking system; Be used for the system of tapping a blast furnace that the iron after the melting is transported by circuit body; Be used to electrode cooling the electrode water-cooling system, be used for high-temperature flue that the hot furnace body flue gas in ore deposit is discharged; The dust pelletizing system that is connected with said high-temperature flue and high-temperature flue gas is carried out dedusting, said dust pelletizing system links to each other with the fume emission mouth of the hot furnace body in said ore deposit through high-temperature flue; It is characterized in that said ferroalloy submerged arc furnace system also comprises afterheat generating system; Said afterheat generating system is provided with between the deduster in said high-temperature flue and the dust pelletizing system, the generating set that comprises waste heat boiler, is made up of steam turbine and generator; Said waste heat boiler will generate saturation water by the high-temperature flue gas conversion that emits in the hot furnace body in ore deposit, and said saturation water rises and enters in the drum of waste heat boiler, and in said drum, carry out producing carbonated drink separation steam; Said steam feeds said steam turbine expansion acting, drags said generator for electricity generation simultaneously.
2. according to the submerged arc furnace system of ferroalloy described in the claim 1, it is characterized in that, drain into atmosphere through said dust pelletizing system through the said high-temperature flue gas after the said waste heat boiler cooling.
3. according to the submerged arc furnace system of ferroalloy described in the claim 1; It is characterized in that; Said ferroalloy submerged arc furnace system also comprises cooling water treatment system, and this system is arranged between said steam turbine and the said waste heat boiler, comprises condenser, condensate pump, oxygen-eliminating device and feed pump; Exhaust steam after the said steam turbine acting, is sent into waste heat boiler via said feed pump again and is carried out waterpower circulation next time after said condensate pump gets into said oxygen-eliminating device deoxygenation by said condenser condenses.
4. according to the submerged arc furnace system of ferroalloy described in the claim 1, it is characterized in that, between said high-temperature flue and the said deduster, the also parallelly connected surface cooler that is provided with said waste heat boiler; And on said high-temperature flue, set up Flue valve; When said waste heat boiler moves, the pathway closure that is connected with surface cooler, high-temperature flue gas enters into waste heat boiler; When waste heat boiler overhauled, the pathway closure that is connected with waste heat boiler, high-temperature flue gas get in the surface cooler lowered the temperature.
5. according to the submerged arc furnace system of ferroalloy described in the claim 1, it is characterized in that described high-temperature flue is the interior insulation flue of insulation form in adopting, the heat-resistance stainless steel flue or the gasification cooling flue of the outer insulation of employing.
6. according to the submerged arc furnace system of ferroalloy described in the claim 1, it is characterized in that said waste heat boiler is horizontal boiler or vertical boiler.
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| CN2012101103256A CN102620572A (en) | 2012-04-16 | 2012-04-16 | Ferroalloy mine heat furnace system with waste heat power generation system |
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| CN2012101103256A CN102620572A (en) | 2012-04-16 | 2012-04-16 | Ferroalloy mine heat furnace system with waste heat power generation system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914172A (en) * | 2012-11-16 | 2013-02-06 | 宁夏光合能源科技有限公司 | Method and device for recycling and storing comprehensive residual heat of ferroalloy furnace so as to generate electricity |
| CN102937379A (en) * | 2012-11-16 | 2013-02-20 | 宁夏光合能源科技有限公司 | Method and device for recycling and storing ferroalloy furnace flue waste heat for generating power |
| CN103047871A (en) * | 2012-12-28 | 2013-04-17 | 北京世纪源博科技股份有限公司 | Comprehensive iron alloy submerged arc furnace waste heat recovery and utilization system |
| CN103307892A (en) * | 2013-06-04 | 2013-09-18 | 广州资源环保水电工程有限公司 | High-temperature flue gas flow-guiding device |
| CN104883001A (en) * | 2015-05-15 | 2015-09-02 | 成都中冶节能环保工程有限公司 | Heat inductance coke oven waste heat recovery power generating system based on boost power circuit |
| CN106766950A (en) * | 2016-11-23 | 2017-05-31 | 北京天朗致达节能环保科技有限公司 | A kind of high temperature pelletizing heat recovering device and recovery method |
| CN111272000A (en) * | 2020-01-21 | 2020-06-12 | 董荣华 | Slab vaporization cooling device and slab sensible heat recovery power generation system |
| CN111457723A (en) * | 2020-04-21 | 2020-07-28 | 佛山市南海创利有色金属制品有限公司 | Secondary aluminum smelting energy-saving and waste heat recovery process |
| ES2788684A1 (en) * | 2019-04-10 | 2020-10-22 | Palacios Miguel Angel Iglesias | METHOD AND SYSTEM OF ENERGY COGENERATION OF A STEEL TRANSFORMATION PLANT (Machine-translation by Google Translate, not legally binding) |
| CN114508947A (en) * | 2022-02-10 | 2022-05-17 | 宁夏瑞资联实业有限公司 | A kind of submerged arc furnace supporting waste heat power generation system |
| CN115216781A (en) * | 2022-05-26 | 2022-10-21 | 亚洲硅业(青海)股份有限公司 | A system for efficient utilization of tail gas of polysilicon reduction furnace |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937379A (en) * | 2012-11-16 | 2013-02-20 | 宁夏光合能源科技有限公司 | Method and device for recycling and storing ferroalloy furnace flue waste heat for generating power |
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| CN103307892A (en) * | 2013-06-04 | 2013-09-18 | 广州资源环保水电工程有限公司 | High-temperature flue gas flow-guiding device |
| CN103307892B (en) * | 2013-06-04 | 2015-03-25 | 广州资源环保水电工程有限公司 | High-temperature flue gas flow-guiding device |
| CN104883001A (en) * | 2015-05-15 | 2015-09-02 | 成都中冶节能环保工程有限公司 | Heat inductance coke oven waste heat recovery power generating system based on boost power circuit |
| CN106766950A (en) * | 2016-11-23 | 2017-05-31 | 北京天朗致达节能环保科技有限公司 | A kind of high temperature pelletizing heat recovering device and recovery method |
| CN106766950B (en) * | 2016-11-23 | 2019-03-29 | 北京天朗致达节能环保股份有限公司 | A kind of high temperature pelletizing heat recovering device and recovery method |
| ES2788684A1 (en) * | 2019-04-10 | 2020-10-22 | Palacios Miguel Angel Iglesias | METHOD AND SYSTEM OF ENERGY COGENERATION OF A STEEL TRANSFORMATION PLANT (Machine-translation by Google Translate, not legally binding) |
| CN111272000A (en) * | 2020-01-21 | 2020-06-12 | 董荣华 | Slab vaporization cooling device and slab sensible heat recovery power generation system |
| CN111457723A (en) * | 2020-04-21 | 2020-07-28 | 佛山市南海创利有色金属制品有限公司 | Secondary aluminum smelting energy-saving and waste heat recovery process |
| CN114508947A (en) * | 2022-02-10 | 2022-05-17 | 宁夏瑞资联实业有限公司 | A kind of submerged arc furnace supporting waste heat power generation system |
| CN115216781A (en) * | 2022-05-26 | 2022-10-21 | 亚洲硅业(青海)股份有限公司 | A system for efficient utilization of tail gas of polysilicon reduction furnace |
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Application publication date: 20120801 |