CN202304455U - Intermittent saturated steam overheating power generation system for iron and steel enterprises - Google Patents
Intermittent saturated steam overheating power generation system for iron and steel enterprises Download PDFInfo
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- CN202304455U CN202304455U CN2011203932103U CN201120393210U CN202304455U CN 202304455 U CN202304455 U CN 202304455U CN 2011203932103 U CN2011203932103 U CN 2011203932103U CN 201120393210 U CN201120393210 U CN 201120393210U CN 202304455 U CN202304455 U CN 202304455U
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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
The utility model discloses an intermittent saturated steam overheating power generation system for iron and steel enterprises. The system comprises a converter, a converter afterheat furnace, a converter afterheat furnace steam drum, a saturated steam heat accumulator, an external source type overheater, a steam turbine, a generator, a condenser, a condensate pump and a gas boiler. In the working process of the converter, intermittent saturated steam is generated by the converter afterheat furnace, and sequentially enters the saturated steam heat accumulator and the external source type overheater; and generated overheated steam enters the steam turbine, and applies work to drive the generator, and the exhaust steam of the steam turbine is condensed, deoxygenated and delivered back to the converter afterheat furnace steam drum through the condensate pump to finish a working medium cycle. A heat source of the external source type overheater is the gas boiler. By the system, high-quality steam is generated by dynamically integrating the intermittent saturated steam generated by the converter, a heat accumulation technology and the overheating process of the gas boiler, and is provided for a steam turbine generator; and therefore, the afterheat utilization efficiency of the ion and steel enterprises can be improved, and energy consumption can be reduced.
Description
Technical field
The utility model relates to a kind of afterheat generating system, relates in particular to a kind of intermittent saturated vapor and crosses heat generating system.
Background technology
Iron and steel enterprise can produce a certain amount of saturated vapor (such as from converter waste heat boiler etc.) in process of production usually; Utilization to this part saturated vapor can have difficulties usually: the one, and the quality of saturated vapor is relatively low, can produce serious cavitation with the saturated vapor generating to steam turbine; The 2nd, the saturated vapor that produces is normally intermittent, and this brings difficulty for the continuous operation of generating equipment.Simultaneously, iron and steel enterprise all is provided with gas boiler usually in order to make full use of blast furnace gas, coal gas of converter, the coke-stove gas that produces in the production process.If the saturated vapor of iron and steel enterprise's generation; Through in gas boiler, arranging suitable heating surface; It is overheated that saturated vapor is carried out, and then enter into steam turbine acting generating, or be used for Process heat, heating/refrigeration (absorption refrigeration) etc.; So just can efficiently utilize, thereby reach the purpose that improves UTILIZATION OF VESIDUAL HEAT IN efficient, reduces iron and steel enterprise's energy consumption cost this part heat.
Summary of the invention
The utility model mainly is in order to overcome the deficiency that existing in prior technology part heat can not efficiently utilize; Thereby develop the intermittent saturated vapor of a kind of iron and steel enterprise and cross heat generating system, the purpose that improve UTILIZATION OF VESIDUAL HEAT IN efficient to reach, reduces iron and steel enterprise's energy consumption cost.
In the production of iron and steel enterprise; In order to make full use of the technology waste heat, the UTILIZATION OF VESIDUAL HEAT IN equipment of various ways is installed usually: such as the converter waste heat boiler that is used to reclaim the process for making waste heat, be used to reclaim the coke waste heat dry coke quenching residual heat boiler, be used to sintering machine waste heat boiler that reclaims the iron ore waste heat etc.Waste heat recovery apparatus such as converter waste-heat oven can produce intermittent saturated vapor usually in technological process; If these intermittent saturated vapors are used for generating, can be owing to reasons such as cavitation are difficult to carry out; Therefore only can be used for winter heating usually, utilization rate is low; And in other season that does not have the heating demand, this part heat waste is just more serious.
With 180 tons converters is example, and its smelting cycle is about 38 minutes, and the oxygen blast cycle is about 15 minutes, saturated vapor flow and this cycle basically identical that the converter waste-heat oven produces; The average discharge of this type converter steam is about 64t/h in the oxygen blast phase, and the average discharge in whole smelting cycle has only 25t/h.This cyclophysis of converter waste-heat oven brings difficulty for the further utilization of waste heat.In the utility model, the intermittent saturated vapor that produces the technology waste heat is incorporated into saturated storage heater, and saturated storage heater has bigger volume and thermal capacitance, and it can make the steam pressure of output and flow more stable.In order further to improve the steam quality of this part, the saturated vapor that comes out from storage heater is introduced in external source formula superheater.External source formula superheater is arranged on the correct position of gas boiler exhaust gases passes according to the demand of relevant parameter.The overheated vapour that comes out from external source formula superheater be used to do work generating, Process heat, heating/refrigeration (absorption refrigeration) etc.
Gas boiler is to utilize the coal gas that produces in ironmaking, steel-making, the process of coking and a kind of residual heat using device that drops into; It not only can reduce the direct discharging of coal gas or the pollution that the discharging of burning back causes; Can also bring good economic benefit, gas boiler is popularized in the application of iron and steel enterprise.The course of work of gas boiler: the air after the air preheater heating mixes at the burner outlet place with coal gas, then in the burner hearth internal combustion.The high-temperature flue gas that burning the produces heat-absorbent surfaces such as superheater, external source formula superheater, economizer, air preheater of successively flowing through are discharged from chimney again.The flow process of water conservancy project matter is: condensate gets into economizer and carries out preheating after boosting, enter into the gas burner drum then; The burner hearth arranged around has water-cooling wall, is used to absorb the radiant heat of high-temperature flue gas, makes the water in the gas burner drum accomplish the vaporization evaporating course gradually; The saturated vapor that the comes out gas burner superheater of flowing through is accomplished steam superheating, and superheated steam is introduced in steam turbine and accomplishes expansion acting process; Steam after the acting becomes condensate after condensation, so far accomplish a working medium circulation.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: the intermittent saturated vapor of a kind of iron and steel enterprise is crossed heat generating system, it is characterized in that: have converter, converter waste-heat oven, converter waste-heat oven drum, saturated storage heater, external source formula superheater, gas boiler, steam turbine, generator, condenser, condensate pump; Get into the converter waste-heat oven from come out intermittent saturated vapor of converter; Get into converter waste-heat oven drum then, the intermittent saturated vapor that converter waste-heat oven drum produces is incorporated into saturated storage heater, and saturated storage heater plays peak load shifting to steam parameter (pressure, temperature and flow); The saturated vapor that comes out from saturated storage heater is incorporated into external source formula superheater again; The superheated steam that produces from external source formula superheater is introduced in the steam turbine acting, drives generator and produces electric energy, and the steam of discharging from steam turbine becomes condensate after the condenser cooling; Carry rotary furnace waste-heat oven drum through condensate pump again, so far accomplish the process of a working medium circulation.Said external source formula superheater is arranged in the exhaust gases passes of gas boiler, if be arranged in the high-temperature flue gas district, in system's shutdown process, should be noted that the variation of steam flow in the external source formula superheater, prevents that external source formula superheater is in dry-fire condition for a long time.Therefore when carrying out the design of external source formula superheater, should consider the outlet steam parameter of this heating surface and the flue-gas temperature of workspace, and choose the higher material of tolerable temperature as far as possible.Through the improvement of the design link and the method for operation, external source formula superheater can be coordinated with gas boiler each other, realizes whole system safety, running efficiently.
The technical scheme of the utility model can also be further perfect:
As preferably; Said gas boiler comprises burner hearth and the flue that links to each other with burner hearth; Burner, water-cooling wall and superheater are installed in the said burner hearth successively; Certain position in the said flue is equipped with external source formula superheater, is furnished with economizer and air preheater successively at the flue afterbody, and gas boiler is connected with the gas burner drum; The course of work of gas boiler is: cold air enters into burner after the air preheater preheating, produces intense mixing with coal gas in the exit of burner, fully burning behind the entering burner hearth; In order to absorb the heat that combustion process produces; Be furnished with the pattern water-cooling wall around the said burner hearth; Saturation water in the gas burner drum enters into water-cooling wall behind down-comer, accomplish the process of evaporation, vaporization therein gradually, and the saturated vapor of generation enters into superheater; Superheated steam is introduced in the steam turbine acting, drives generator and produces electric energy, and the steam of discharging from steam turbine becomes condensate after the condenser cooling, be sent in the economizer again, after preheating, enters into the gas burner drum, accomplishes a working medium circulation of gas burner.
High energy consumption is a distinguishing feature of iron and steel enterprise, and in power consumption, its special production technology can produce a large amount of waste heats again, and this part energy was called as used heat in the past and has directly been emitted; If can make full use of this part heat, not only can reduce pollution to environment, can also be enterprise's considerable economic benefit.The energy-saving and emission-reduction that are applied as iron and steel enterprise of equipment such as gas boiler, converter waste-heat oven, dry coke quenching waste-heat oven, sintering machine waste-heat oven provide strong support.The utility model is a kind of innovation of UTILIZATION OF VESIDUAL HEAT IN technology on systems approach; It is the intermittent saturated vapor of generations such as converter waste-heat oven; Get up through heat storage technology and gas boiler organic assembling; In external source formula superheater, realize steam superheating, produce high-quality steam, the generating that is used to do work, Process heat, heating/refrigeration (absorption refrigeration) etc.This method can significantly improve the UTILIZATION OF VESIDUAL HEAT IN efficient of iron and steel enterprise, less hot driving to environment, considerable economic benefit simultaneously.
The utility model combines the superheating process of intermittent saturated vapor, heat storage technology and gas boiler that converter produces, produces high-quality steam steam supply turbine generator, has following distinguishing feature:
(1) need not increase extra combustion apparatus, utilize the existing gas boiler of iron and steel enterprise, design on the rational position of its exhaust gases passes, layout one group of heating surface (external source formula superheater) are realized the overheated of steam; This mode has advantages such as initial cost is economized, payoff period is short, the system reform is convenient.
(2) the saturated vapor heat storage technology combines with external source formula superheater; Realize the overheated of intermittent saturated vapor; Produce high-quality continuous steam, the generating that is used to do work, Process heat, heating/refrigeration (absorption refrigeration) etc. have improved the UTILIZATION OF VESIDUAL HEAT IN efficient of equipment such as converter waste-heat oven greatly.
(3) if gas boiler, converter waste-heat oven, steam power system etc. are carried out the globality design; So only need a cover steamer electricity generation system; The steam that promptly produces external source formula superheater is incorporated into the steam turbine air intake that is complementary with parameter; Realize the expansion acting process of steam, can save a large amount of initial costs like this.
(4) as far as gas boiler, owing to increased by one group of heat-absorbent surface (external source formula superheater), therefore can reduce the exhaust gas temperature of gas boiler, make its thermal efficiency be able to promote.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model.
Description of reference numerals: 1, converter, 2, the converter waste-heat oven, 3, converter waste-heat oven drum, 4, saturated storage heater, 5, external source formula superheater; 6, gas boiler, 61, burner hearth, 62, burner, 63, water-cooling wall; 64, gas burner drum, 65, superheater, 66, economizer, 67, air preheater; 7, steam turbine, 8, generator, 9, condenser, 10, condensate pump.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment:
The intermittent saturated vapor of iron and steel enterprise as shown in Figure 1 is crossed heat generating system, comprising: converter 1, converter waste-heat oven 2, converter waste-heat oven drum 3, saturated storage heater 4, external source formula superheater 5, gas boiler 6, steam turbine 7, generator 8, condenser 9, condensate pump 10; Gas boiler 6 comprises: burner hearth 61, burner 62, water-cooling wall 63, gas burner drum 64, superheater 65, economizer 66, air preheater 67 etc.
The normal workflow of the utility model is following: converter 1 periodically produces high-temperature flue gas in steelmaking process, converter waste-heat oven 2 absorbs the heat of high-temperature flue gas, produces intermittent saturated vapor, is incorporated into saturated storage heater 4 from converter waste-heat oven drum 3 again.4 pairs of steam parameters of saturated storage heater (pressure, temperature and flow) play peak load shifting, and the steam parameter that therefore comes out from saturated storage heater 4 becomes more continuously, more steady.Saturated vapor enters into external source formula superheater 5 again, and the superheated steam of generation is introduced in steam turbine 7 actings, drives generator 8 and produces electric energy; The steam of discharging from steam turbine 7 becomes condensate after condenser 9 coolings, carry rotary furnace waste-heat oven drum 3 through condensate pump 10 again; So far accomplish the process of a working medium circulation.
External source formula superheater 5 is arranged in the exhaust gases passes of gas boiler 6; The course of work of gas boiler 6 is following: cold air enters into burner 61 after air preheater 67 preheatings; Produce intense mixing with coal gas in the exit of burner 61, get into the fully burning of burner hearth 61 backs; In order to absorb the heat that combustion process produces; Be furnished with pattern water-cooling wall 63 around the burner hearth 61; Saturation water in the gas burner drum 64 enters into water-cooling wall 63 behind down-comer, accomplish the process of evaporation, vaporization therein gradually, and the saturated vapor of generation enters into superheater 64; Superheated steam is introduced in the acting of steamer electricity generation system, and the steam after the acting of expanding is cooled and becomes condensate, from newly be sent to economizer 66, after preheating, enters into gas burner drum 64, accomplishes a working medium circulation of gas burner 6.
External source formula superheater 5 is arranged in the gas boiler 6, if be arranged in the high-temperature flue gas district, in system's shutdown process, should be noted that the variation of steam flow in the external source formula superheater 5, prevents that external source formula superheater 5 is in dry-fire condition for a long time.
In above-mentioned example system, the intermittent saturated vapor that produces converter waste-heat oven 2 is incorporated into saturated storage heater 4, the flow of saturated vapor, pressure and other parameters is kept relative stability, and be incorporated into external source formula superheater 5, and the superheated steam of generation is used for the acting generating.This mode has overcome the deficiency of converter waste-heat oven 2 independent operating modes, has improved the UTILIZATION OF VESIDUAL HEAT IN level of iron and steel enterprise, and can produce good economic benefit.This invention has simultaneously made full use of gas boiler 6 existing equipments such as grade, under less modification scheme, realizes whole system optimum organization, has remarkable advantages such as reduced investment, payoff period be short.This system meets the industrial policy of national UTILIZATION OF VESIDUAL HEAT IN, energy-saving and emission-reduction, has a extensive future.
Claims (2)
1. the intermittent saturated vapor of iron and steel enterprise is crossed heat generating system; It is characterized in that: have converter (1), converter waste-heat oven (2), converter waste-heat oven drum (3), saturated storage heater (4), external source formula superheater (5), gas boiler (6), steam turbine (7), generator (8), condenser (9), condensate pump (10), be linked to be integral body through pipeline; The saturated vapor that produces from converter waste-heat oven drum (3) is incorporated into saturated storage heater (4); The saturated vapor that comes out from saturated storage heater is incorporated into external source formula superheater (5) again; The superheated steam that produces from external source formula superheater is introduced in steam turbine (7) acting, drives generator (8) and produces electric energy, and the steam of discharging from steam turbine (7) condenses condenser (9); Carried rotary furnace waste-heat oven drum (3) by condensate pump (10), so far accomplish the process of a working medium circulation; Said external source formula superheater (5) is arranged in the exhaust gases passes of gas boiler (6).
2. the intermittent saturated vapor of iron and steel enterprise according to claim 1 is crossed heat generating system; It is characterized in that: said gas boiler (6) comprises burner hearth (61) and the flue that links to each other with burner hearth; Burner (62), water-cooling wall (63) and superheater (65) are installed in the said burner hearth successively; Certain position in the said flue is equipped with external source formula superheater (5); At the flue afterbody economizer (66) and air preheater (67) are installed successively, said gas boiler (6) is connected with gas burner drum (64).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203932103U CN202304455U (en) | 2011-10-17 | 2011-10-17 | Intermittent saturated steam overheating power generation system for iron and steel enterprises |
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| CN2011203932103U CN202304455U (en) | 2011-10-17 | 2011-10-17 | Intermittent saturated steam overheating power generation system for iron and steel enterprises |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980169A (en) * | 2012-11-29 | 2013-03-20 | 杭州锅炉集团股份有限公司 | Thermodynamic system combined with solar energy water heat absorption device and low limit load boiler |
| CN104456507A (en) * | 2014-10-09 | 2015-03-25 | 中石化宁波工程有限公司 | Saturating and overheating integrated boiler |
| CN105066720A (en) * | 2015-08-31 | 2015-11-18 | 中冶南方工程技术有限公司 | Waste heat utilization system for sinter cooler |
| CN105689360A (en) * | 2016-03-03 | 2016-06-22 | 中冶东方工程技术有限公司 | System and technology utilizing converter gas for gasifying household refuse to achieve incineration and power generation |
| CN108870503A (en) * | 2018-07-16 | 2018-11-23 | 中国能源建设集团山西省电力勘测设计院有限公司 | To the intermittent waste heat comprehensive utilization system with vapour user steam supply industrial over long distances |
| CN110160036A (en) * | 2019-06-03 | 2019-08-23 | 嘉兴灵群贸易有限公司 | A kind of metallurgy type refining slag special for ladle and preparation method thereof |
| CN111272000A (en) * | 2020-01-21 | 2020-06-12 | 董荣华 | Slab vaporization cooling device and slab sensible heat recovery power generation system |
| CN112627922A (en) * | 2020-12-16 | 2021-04-09 | 攀钢集团攀枝花钢钒有限公司 | Metallurgical waste heat steam power generation system |
| CN114440207A (en) * | 2022-02-10 | 2022-05-06 | 山东中杰特种装备股份有限公司 | Stable tunnel kiln waste heat power generation process |
| CN115900376A (en) * | 2023-02-20 | 2023-04-04 | 南京金瀚环保科技有限公司 | Converter saturated steam reheating type power generation device and method thereof |
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2011
- 2011-10-17 CN CN2011203932103U patent/CN202304455U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980169B (en) * | 2012-11-29 | 2015-04-22 | 杭州锅炉集团股份有限公司 | Thermodynamic system combined with solar energy water heat absorption device and low limit load boiler |
| CN102980169A (en) * | 2012-11-29 | 2013-03-20 | 杭州锅炉集团股份有限公司 | Thermodynamic system combined with solar energy water heat absorption device and low limit load boiler |
| CN104456507A (en) * | 2014-10-09 | 2015-03-25 | 中石化宁波工程有限公司 | Saturating and overheating integrated boiler |
| CN105066720B (en) * | 2015-08-31 | 2017-07-11 | 中冶南方工程技术有限公司 | A kind of sinter cooler afterheat utilizing system |
| CN105066720A (en) * | 2015-08-31 | 2015-11-18 | 中冶南方工程技术有限公司 | Waste heat utilization system for sinter cooler |
| CN105689360B (en) * | 2016-03-03 | 2017-12-26 | 中冶东方工程技术有限公司 | A kind of system and technique of the domestic garbage burning electricity generation that gasified using coal gas of converter |
| CN105689360A (en) * | 2016-03-03 | 2016-06-22 | 中冶东方工程技术有限公司 | System and technology utilizing converter gas for gasifying household refuse to achieve incineration and power generation |
| CN108870503A (en) * | 2018-07-16 | 2018-11-23 | 中国能源建设集团山西省电力勘测设计院有限公司 | To the intermittent waste heat comprehensive utilization system with vapour user steam supply industrial over long distances |
| CN108870503B (en) * | 2018-07-16 | 2023-12-22 | 中国能源建设集团山西省电力勘测设计院有限公司 | Waste heat comprehensive utilization system for long-distance industrial steam supply of intermittent steam utilization users |
| CN110160036A (en) * | 2019-06-03 | 2019-08-23 | 嘉兴灵群贸易有限公司 | A kind of metallurgy type refining slag special for ladle and preparation method thereof |
| CN110160036B (en) * | 2019-06-03 | 2021-01-29 | 浙江麦知网络科技有限公司 | Special metallurgical refining slag equipment for steel ladle |
| CN111272000A (en) * | 2020-01-21 | 2020-06-12 | 董荣华 | Slab vaporization cooling device and slab sensible heat recovery power generation system |
| CN112627922A (en) * | 2020-12-16 | 2021-04-09 | 攀钢集团攀枝花钢钒有限公司 | Metallurgical waste heat steam power generation system |
| CN114440207A (en) * | 2022-02-10 | 2022-05-06 | 山东中杰特种装备股份有限公司 | Stable tunnel kiln waste heat power generation process |
| CN115900376A (en) * | 2023-02-20 | 2023-04-04 | 南京金瀚环保科技有限公司 | Converter saturated steam reheating type power generation device and method thereof |
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