CN201071741Y - Electric furnace flue gas waste heat power generation system - Google Patents
Electric furnace flue gas waste heat power generation system Download PDFInfo
- Publication number
- CN201071741Y CN201071741Y CNU2007201753600U CN200720175360U CN201071741Y CN 201071741 Y CN201071741 Y CN 201071741Y CN U2007201753600 U CNU2007201753600 U CN U2007201753600U CN 200720175360 U CN200720175360 U CN 200720175360U CN 201071741 Y CN201071741 Y CN 201071741Y
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- China
- Prior art keywords
- steam
- flue gas
- electric furnace
- heat boiler
- exhaust heat
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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
- Y02P10/20—Recycling
Abstract
The utility model discloses a waste heat power generation system of electric furnace flue gas, which is invented in order to solve problems of the prior electric furnace on unsuitable utilization of the flue gas with high temperature and high dust. The utility model comprises a flue gas & air system, a steam system, a steam turbine, a water system and a waste heat boiler; through adopting steam thermal storage technology and steam turbine power generation technology, the system can sufficiently utilize the steam produced by the waste heat boiler, thereby realizing objective on energy conservation, consumption reduction and emission reduction of electric furnace steelmaking, expanding method of waste heat utilization, reducing enterprise manufacturing cost, and improving enterprise market competitiveness, which can create valuable economic benefit, environmental benefit and social benefit with more impact.
Description
Technical field
The utility model relates to a kind of power generation system, relates in particular to a kind of power generation system of utilizing the useless fume afterheat of electric furnace.
Background technique
In the prior art, Electrosmelting Of Steel can produce the high temperature with high dust flue gas of very big flow, is subjected to the influence of electric furnace manufacture cycle, and the fume afterheat of discharge has intermittence, wave properties and periodicity, causes this part energy to waste.In order to satisfy the requirement of dusting apparatus, the flue gas of high temperature must cool off by mechanical air cooler, needs a large amount of power electricity to support the operation of cooling system in this process again simultaneously.
The model utility content
For overcoming above-mentioned defective, the utility model provides a kind of electric furnace flue gas afterheat generating system that can save the energy, reduce production costs.
For achieving the above object, the utility model electric furnace flue gas afterheat generating system comprises air and gas system, vapour system, steam turbine, water system and exhaust heat boiler;
Air and gas system: heating surface, dust pelletizing system, induced draught fan, chimney by electric furnace, combustion settling chamber, exhaust heat boiler are formed; Wherein, the high-temperature flue gas that electric furnace produced outputs to the heating surface of exhaust heat boiler through combustion settling chamber, exports dust pelletizing system to after the high-temperature flue gas heat release finishes, and discharges after induced draught fan outputs to chimney again;
Vapour system: comprise exhaust heat boiler, thermal accumulator and steam dryer; Wherein, the high-quality steam that exhaust heat boiler produced is passed through thermal accumulator, steam dryer, is exported to steam turbine;
Water system: form by condenser, condensation water tank, condensate pump, oxygen-eliminating device, thermal accumulator water pump, circulating water pump, afterheat boiler system; Wherein, the waste steam of discharging from the outlet of steam turbine is back to exhaust heat boiler by condenser, condensation water tank, condensate pump, oxygen-eliminating device, thermal accumulator water pump, water pump.
Further, also comprise a heating system that is connected with thermal accumulator, described heating system comprises heating user, heat exchange station, hot user; Wherein, the high-quality steam in the thermal accumulator heats to the heating user by heat exchange station.
Wherein, above-mentioned exhaust heat boiler is more than two or two; Be provided with gas-distributing cylinder between above-mentioned many exhaust heat boilers and thermal accumulator, described exhaust heat boiler more than two or two is exported steam by gas-distributing cylinder to thermal accumulator.
Wherein, above-mentioned thermal accumulator is more than two or two, and the thermal accumulator more than two or two adopts the mode of serial or parallel connection to connect.
Wherein, above-mentioned steam dryer is: steam-water separator, steam superheater or steam mixer.
Further, between combustion settling chamber and dust pelletizing system, be provided with mechanical air cooler.
The utlity model has following advantage:
1, the useless fume afterheat power generation system of electric furnace of the present utility model, the electric furnace high-temperature flue gas produces saturated vapour by exhaust heat boiler, saturated vapour drives the Turbo-generator Set generating, fully recycled the used heat of electric furnace flue gas, saved the energy, reduced cost of production, the environmental pollution of the flue gas of minimizing;
2, when system runs into fault and maybe needs to overhaul, the flue gas that electric furnace produced can be guaranteed the normal stable operation of main process for making by the dedusting smoke evacuation of machine power air cooling system cooling back;
3, in system, use steam accumulator,, realize that " peak load shifting makes the stable operation of generating and heating system energy in order to adjust the peak valley of exhaust heat boiler producing steam.
Description of drawings
Fig. 1 is the structural representation of the utility model electric furnace flue gas afterheat generating system.
Fig. 2 is two structural representations that exhaust heat boiler connects in the utility model electric furnace flue gas afterheat generating system shown in Figure 1.
Fig. 3 is the structural representation of heating system in the utility model electric furnace flue gas afterheat generating system shown in Figure 1.
Fig. 4 is the thermal accumulator structural representation that uses in parallel in the utility model electric furnace flue gas afterheat generating system shown in Figure 1.
Fig. 5 is the structural representation that the thermal accumulator series connection is used in the utility model electric furnace flue gas afterheat generating system shown in Figure 1.
Embodiment
The utility model is further described below in conjunction with accompanying drawing.
The utility model is the heat generation saturated vapor that absorbs flue gas by exhaust heat boiler, comes the pushing turbine acting with saturated vapor, sends the electric energy of cleaning.As shown in Figure 1, the utility model electric furnace flue gas afterheat generating system comprises air and gas system, vapour system, steam turbine, water system and exhaust heat boiler;
Air and gas system: heating surface, dust pelletizing system 17, induced draught fan 18, chimney 19 by electric furnace 14, combustion settling chamber 15, exhaust heat boiler are formed;
Vapour system: comprise exhaust heat boiler 1, thermal accumulator 3 and steam dryer 4;
Water system: form by condenser 7, condensation water tank 8, condensate pump 9, oxygen-eliminating device 10, thermal accumulator water pump 11, circulating water pump 12,13, exhaust heat boiler 1;
The working procedure of whole generating system is such: the flue gas of high temperature with high dust enters dusting apparatus 17 after cooling off by exhaust heat boiler 1 heat exchange, and the flue gas after the dedusting enters chimney 19 by induced draught fan 18 and enters atmosphere again.The water that water supply system is come becomes saturation water and mixture of steam after boiler heating surface 1 absorbs heat, in drum 27, realize carbonated drink separation, water returns the heating surface heat absorption, steam then flows to gas-distributing cylinder 2, process gas-distributing cylinder 2 parts enter 6 generatings of steam turbine 5 acting driving generators after entering steam-water separator 4, and a part enters thermal accumulator 3 and stores.The steam of finishing merit enters condensation water tank 8 after the condensation in vapour condenser 7, condensed water enters oxygen-eliminating device 10 by condensate pump 9, and the water after the deoxygenation enters boiler-steam dome through feed water pump 12,13 and so circulates.Some enters thermal accumulator 3 through thermal accumulator water pump 11 water that oxygen-eliminating device 10 comes out.The moisturizing that DW system demineralized water system comes adds the condensation water tank of vapour condenser.
As further improvement of the utility model, as shown in figures 1 and 3, native system can be kept apart steam turbine generator, with the steam that produces directly to user's 30 heat supplies, also can be by 29 pairs of sub-district heating 28 of heat exchange station, perhaps enlarge the heating radius by heat pump again, realize the heat supply in winter of powering summer, perhaps heat, electricity, warm three alliances.
Improve further as of the present utility model as shown in Figure 2, described exhaust heat boiler is more than two or two; Be provided with gas-distributing cylinder between described many exhaust heat boilers and thermal accumulator, described exhaust heat boiler more than two or two is exported steam by gas-distributing cylinder to thermal accumulator.
Shown in Figure 5 as Fig. 4, above-mentioned thermal accumulator can be selected the platform number as required, can also can be more than two or two for one, and the thermal accumulator more than two or two can adopt the mode of serial or parallel connection to connect.
During concrete enforcement, the power in the system can use electric energy such as water pump 13 fully; Also can use steam driven, as water pump 12, it is to drive by the part high temperature and high pressure steam of telling in the gas-distributing cylinder 2.
During concrete enforcement, steam-water separator 4 can change steam superheater 25 parts into, and saturated steam is heated into superheated vapor again, uses superheated steam generation, and its superheat steam temperature is 300-450 ℃.Its heating thermal source can be other energy such as electric energy, high-temperature flue gas heat energy, solar energy; Also can change steam mixer 26 into, utilize the steam of High Temperature High Pressure to mix the overheated purpose of realization with it.
In order to prevent when system runs into fault and maybe needs to overhaul, to guarantee the normal stable operation of main process for making; Between combustion settling chamber 15 and dust pelletizing system 17, be provided with mechanical air cooler 16, like this, can on the pipeline between combustion settling chamber 15 and the mechanical air cooler 16, switching valve 23 be set, on the pipeline between combustion settling chamber 15 and the exhaust heat boiler 1, switching valve 24 be set.When system need overhaul, open switching valve 23, close switching valve 24, the flue gas that electric furnace produced can be discharged fume by mechanical air cooler cooling back dedusting, thereby can guarantee the normal stable operation of main process for making.
During concrete enforcement, the flue gas of high dust loading enters exhaust heat boiler, adopts the technology ash disposal of gas shock wave, guarantees that boiler is stable, safety, efficient operation, discharges fume behind the outlet flue gas ash removal, can effectively protect deduster, increases the service life.
In summary, native system can make full use of the steam that electric furnace is produced by taking steam heat storage technology and steam turbine generation technology.Realize the target of Electrosmelting Of Steel saving energy, lowering energy consumption and reducing pollutants discharge like this, enlarged the approach of UTILIZATION OF VESIDUAL HEAT IN, reduced the cost of production of enterprise, improved the market competitiveness of enterprise.Certainly, should be known in that as those of ordinary skill in the art native system is not only applicable to electric furnace flue gas heat recovery system, also be widely used in recycling the waste heat thermal source that is worth.
Claims (6)
1. an electric furnace flue gas afterheat generating system is characterized in that: comprise air and gas system, vapour system, steam turbine, water system and exhaust heat boiler;
Air and gas system: heating surface, dust pelletizing system, induced draught fan, chimney by electric furnace, combustion settling chamber, exhaust heat boiler are formed; Wherein, the high-temperature flue gas that electric furnace produced outputs to the heating surface of exhaust heat boiler through combustion settling chamber, exports dust pelletizing system to after the high-temperature flue gas heat release finishes, and discharges after induced draught fan outputs to the cigarette fontanel again;
Vapour system: comprise exhaust heat boiler, thermal accumulator and steam dryer; Wherein, the high-quality steam that exhaust heat boiler produced is passed through thermal accumulator, steam dryer, is exported to steam turbine;
Water system: form by condenser, condensation water tank, condensate pump, oxygen-eliminating device, thermal accumulator water pump, circulating water pump, afterheat boiler system; Wherein, the waste steam of discharging from the outlet of steam turbine is back to exhaust heat boiler by condenser, condensation water tank, condensate pump, oxygen-eliminating device, thermal accumulator water pump, water pump.
2. electric furnace flue gas afterheat generating system as claimed in claim 1 is characterized in that: also comprise a heating system that is connected with thermal accumulator, described heating system comprises heating user, heat exchange station, hot user; Wherein, the high-quality steam in the thermal accumulator heats to the heating user by heat exchange station.
3. electric furnace flue gas afterheat generating system as claimed in claim 1 is characterized in that: described exhaust heat boiler is more than two or two; Described more than two or two exhaust heat boiler and thermal accumulator between be provided with gas-distributing cylinder, described exhaust heat boiler more than two or two is exported steam by gas-distributing cylinder to thermal accumulator.
4. electric furnace flue gas afterheat generating system as claimed in claim 1 is characterized in that: described thermal accumulator is more than two or two, and the thermal accumulator more than two or two adopts the mode of serial or parallel connection to connect.
5. electric furnace flue gas afterheat generating system as claimed in claim 1 is characterized in that: described steam dryer is: steam-water separator, steam superheater or steam mixer.
6. electric furnace flue gas afterheat generating system as claimed in claim 1 is characterized in that: be provided with mechanical air cooler between combustion settling chamber and dust pelletizing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201753600U CN201071741Y (en) | 2007-09-07 | 2007-09-07 | Electric furnace flue gas waste heat power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201753600U CN201071741Y (en) | 2007-09-07 | 2007-09-07 | Electric furnace flue gas waste heat power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071741Y true CN201071741Y (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201753600U Expired - Lifetime CN201071741Y (en) | 2007-09-07 | 2007-09-07 | Electric furnace flue gas waste heat power generation system |
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| CN (1) | CN201071741Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243025A (en) * | 2011-06-20 | 2011-11-16 | 北京中冶设备研究设计总院有限公司 | Process and device for recycling flue gas afterheat of electric furnace |
| CN102564147A (en) * | 2012-02-29 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Combined recycling system for fume waste heat of furnace cover and flue of iron alloy electric furnace |
| CN103147812A (en) * | 2013-03-25 | 2013-06-12 | 上海西重所重型机械成套有限公司 | Screw expander type flue gas waste heat power generation device |
| CN104654807A (en) * | 2015-02-05 | 2015-05-27 | 山东水泥厂有限公司 | Cement kiln head low-temperature air recycling equipment and method |
| CN109269315A (en) * | 2018-11-12 | 2019-01-25 | 中冶赛迪技术研究中心有限公司 | Make steel waste heat recycling system |
| CN109990611A (en) * | 2019-04-09 | 2019-07-09 | 安徽工业大学 | A kind of electric furnace flue gas high-effective dust-removing and residual neat recovering system and method |
| CN113006893A (en) * | 2021-03-19 | 2021-06-22 | 国能龙源蓝天节能技术有限公司 | Combined heat and power control method and system |
| CN113776345A (en) * | 2021-10-08 | 2021-12-10 | 中冶南方都市环保工程技术股份有限公司 | Efficient power generation system using flue gas waste heat of electric furnace |
-
2007
- 2007-09-07 CN CNU2007201753600U patent/CN201071741Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243025A (en) * | 2011-06-20 | 2011-11-16 | 北京中冶设备研究设计总院有限公司 | Process and device for recycling flue gas afterheat of electric furnace |
| CN102243025B (en) * | 2011-06-20 | 2013-07-10 | 北京中冶设备研究设计总院有限公司 | Process and device for recycling flue gas afterheat of electric furnace |
| CN102564147A (en) * | 2012-02-29 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Combined recycling system for fume waste heat of furnace cover and flue of iron alloy electric furnace |
| CN103147812A (en) * | 2013-03-25 | 2013-06-12 | 上海西重所重型机械成套有限公司 | Screw expander type flue gas waste heat power generation device |
| CN103147812B (en) * | 2013-03-25 | 2016-03-30 | 上海西重所重型机械成套有限公司 | A kind of screw expander formula flue gas waste heat power generation device |
| CN104654807A (en) * | 2015-02-05 | 2015-05-27 | 山东水泥厂有限公司 | Cement kiln head low-temperature air recycling equipment and method |
| CN109269315A (en) * | 2018-11-12 | 2019-01-25 | 中冶赛迪技术研究中心有限公司 | Make steel waste heat recycling system |
| CN109990611A (en) * | 2019-04-09 | 2019-07-09 | 安徽工业大学 | A kind of electric furnace flue gas high-effective dust-removing and residual neat recovering system and method |
| CN113006893A (en) * | 2021-03-19 | 2021-06-22 | 国能龙源蓝天节能技术有限公司 | Combined heat and power control method and system |
| CN113006893B (en) * | 2021-03-19 | 2023-04-25 | 国能龙源蓝天节能技术有限公司 | Combined heat and power control method and system |
| CN113776345A (en) * | 2021-10-08 | 2021-12-10 | 中冶南方都市环保工程技术股份有限公司 | Efficient power generation system using flue gas waste heat of electric furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080611 |