CN1240852C - Electricity generating apparatus of comprehensive using rotating furnace gas and waste heat of steam - Google Patents
Electricity generating apparatus of comprehensive using rotating furnace gas and waste heat of steam Download PDFInfo
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- CN1240852C CN1240852C CNB2004100585420A CN200410058542A CN1240852C CN 1240852 C CN1240852 C CN 1240852C CN B2004100585420 A CNB2004100585420 A CN B2004100585420A CN 200410058542 A CN200410058542 A CN 200410058542A CN 1240852 C CN1240852 C CN 1240852C
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- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 title claims abstract description 12
- 230000005611 electricity Effects 0.000 title abstract description 8
- 239000003034 coal gas Substances 0.000 claims description 27
- 238000002485 combustion reaction Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000010248 power generation Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 235000014171 carbonated beverage Nutrition 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004146 energy storage Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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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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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The present invention relates to a comprehensive utilization electricity generating device for converter gas and waste heat steam, which belongs to the field of converters. The present invention has the technical scheme that a heat accumulator and a steam dividing cylinder are added on the basis of a fuel chamber using converter gas as fuel, a steam generator, a steam drum, a superheater and a converter waste heat boiler; the heat accumulator is respectively connected with the steam drum and the steam dividing cylinder; the steam dividing cylinder is also connected with a collector for collecting the steam of the converter waste heat boiler and other undulation or non-ondulation waste heat steam; the steam dividing cylinder is connected with a steam-turbine generator through the superheater, and a complete closed-circuit electricity generating system is formed. The present invention has the advantages that steam with stable pressure, temperature and flow capacity can be conveyed to the steam-turbine generator under the condition of changeable converter gas and converter waste heat steam through the energy storage adjustment of the heat accumulator, and the steam-turbine generator can be used for generating electricity persistently and stably.
Description
Technical field
The invention belongs to the converter field, relate to the comprehensive utilization of coal gas of converter and afterheat steam, also relate to generation power device.
Background technology
In the prior art, coal gas of converter also acts as a fuel except that being used for the steel-making of this enterprise, steel rolling heating, utilizes coal gas of converter burning steam boiler more than needed, and the steam that is produced is used for generating.In addition, have also that the supporting waste heat boiler of the converter of utilizing produces in, the steam that produces of low-pressure steam and other waste heat, as the power source of turbo-generator, be used for generating.But because coal gas of converter is periodically variable, unsettled, steam flow that is produced and pressure change are also very big, bring great difficulty for effective utilization of steam.For this reason, the converter steam of the enterprise that has only be used on a small quantity heating and life with vapour etc. to vapor pressure and the not high user of traffic requirement, the then emptying of most of steam has been wasted.That is to say that in the prior art, coal gas of converter and converter afterheat steam fail to obtain comprehensively and effectively to use.
Chinese patent CN1434132A discloses a kind of whole blast furnace combined cycle method, and it is integrated oxygen generation system and an association circulating power generation system in system for blast furnace ironmaking.The coal gas that is produced by blast furnace ironmaking enters the combustion chambers burn of internal combustion turbine after dedusting, cooling and compression, the high-temperature gas that burning produces expands, and the propelling gas turbine engine acting drives generator for electricity generation; The high-temp waste gas that internal combustion turbine is discharged and the combustion exhaust of hotblast stove enter waste heat boiler, and the steam that is produced promotes the steam turbine acting, drives generator for electricity generation.The weak point of this patent application is when blast furnace running is unstable or undesired, supplies with when undesired when blast furnace gas in other words, then can not drive the continual and steady generating of generator.In addition, its complex structure is not only manufactured the cost height, and runs and safeguard, repair difficulty.
Summary of the invention
The object of the present invention is to provide a kind of coal gas of converter and afterheat steam comprehensive utilization power generation assembly that can fully utilize the supporting waste heat boiler steam of coal gas of converter and converter comprehensively and effectively.
At above-mentioned purpose, the present invention is with the coal gas of converter on the basis of the combustion chamber that is fuel, vapour generator, drum, superheater and the supporting waste heat boiler of converter, newly establish thermophore and steam distributor, thermophore links to each other with the drum of combustion chamber, thermophore links to each other with steam distributor again, steam distributor and converter waste heat boiler steam and other fluctuation or non-fluctuation afterheat steam summary device link to each other, and steam distributor links to each other with turbo-generator by superheater, forms complete closed cycle power generation system.When the coal gas of converter abundance, the steam that vapour generator produced for a long time, excessive steam enters drum, and the input thermophore, and high-temperature steam heats the water in the thermophore, store with the heat energy form, not enough or the interruption when coal gas of converter, perhaps when converter waste heat boiler steam and other fluctuation or non-fluctuation afterheat steam deficiency, the high temperature saturation water in the thermophore flashes to steam rapidly, and in the input steam distributor, vapor pressure and flow that steam distributor is supplied with to superheater are constant.Satisfy the stable generating requirement that turbo-generator continues.
Now in conjunction with the accompanying drawings, the present invention is elaborated.
Description of drawings
Accompanying drawing 1 is the structural representation of coal gas of converter of the present invention and afterheat steam comprehensive utilization power generation assembly.
Embodiment
Find out that by accompanying drawing 1 coal gas of converter of the present invention and afterheat steam comprehensive utilization power generation assembly is made up of combustion chamber 30, drum 1, vapour generator 2, burner 8, economizer 4, air preheater 7, superheater 5, thermophore 3, steam distributor 6, turbo-generator 40, converter waste heat boiler steam and other fluctuation or non-fluctuation afterheat steam summary device 41 and corresponding pipeline thereof and valve.Burner 8 straight through combustion chamber 30, vapour generator 2 and superheater 5 are in the top of combustion chamber 30,7 in economizer 4 and air preheater are in the flue of combustion chamber 30, vapour generator 2 links to each other with drum 1 with water lines 29 by steam pipe road 28, superheater 5 links to each other with feedwater piping 27 with superheater desuperheat valve 16 by pipeline 44, superheater 5 links to each other with turbo-generator 40 with superheater outlet regulating valve 17 by pipeline 37, economizer 4 links to each other with drum 1 with carbonated drink outlet valve 18 by feedwater piping 27, air preheater 7 links to each other with burner 8 with air control valve 19 by pipeline 26, and coal gas of converter pipeline 25 links to each other with burner 8 by gas regulator 20; Thermophore 3 links to each other with drum 1 with main steam stop valve 10 and steam inlet valve 21 by pipeline 32, thermophore 3 also opens and closes valve 11, pipeline 33 by steam, and link to each other with steam distributor 6 by 34 fens two-way of steam reducing valve 12 and pipeline, steam distributor 6 links to each other with superheater 5 with superheater inlet valve 15 by steam distributor outlet valve 14, and steam distributor 6 passes through pipeline 38 and converter waste heat boiler steam and other fluctuation or non-fluctuation afterheat steam summary device 41 and links to each other; In addition, superheater spray cooling device 42 is installed on the intermediate duct of superheater 5, so that control is by the vapor temperature of superheater output.
9 is feed-regulating valve among the figure, and 43 is the outlet port of the final flue gas in combustion chamber after dedusting.
The working process of coal gas of converter of the present invention and afterheat steam comprehensive utilization power generation assembly, that is specific implementation process is as follows:
At first open air control valve 19 and gas regulator 20, air preheater 7 is with heat exchange mode, utilize the fume afterheat of combustion chamber 30, will be by the normal temperature air heating of pipeline 35 inputs, can be heated to 150～250 ℃, warm air enters burner 8 by air control valve 19, coal gas of converter is imported burners 8 through gas regulator 20 by pipeline 25, and mixes with the warm air of input, burn the high-temperature flue gas of generation more than 1300 ℃, directly enter combustion chamber 30, with the heating of the water in the vapour generator 2 wherein, produce steam, this steam 28 enters in the drum 1 by the road.The size of the quantity of steam of vapour generator 2 required generations can be controlled by regulating air control valve 19 and gas regulator 20, and air and coal gas ratio are regulated automatically by burner 8.Meanwhile, open feed-water valve 9, outside water through desalination and deoxygenation enters economizer 4 by pipeline 36, with heat exchange method, utilize the fume afterheat of combustion chamber 30, feed temperature is heated to 200～280 ℃ (feedwater was heated to 104 ℃ by deoxygenator before entering economizer 4) by 104 ℃; At this moment, open carbonated drink outlet valve 18, feedwater then enters in the drum 1, and in drum 1, feedwater and by the vapor mixing of vapour generator 2 input makes feed temperature can bring up to 250 ℃, by the road the 29 introducing vapour generators 2 that will feed waters.Vapour generator 2 is with heat exchange mode, and the heating of will feeding water becomes steam water interface, 28 turns back in the drum 1 by the road.In drum 1, after carbonated drink was separated, water returned vapour generator 2 by pipeline 29, and steam then enters in the thermophore 3 through main steam stop valve 10, pipeline 32 and steam inlet valve 21, and this moment, steam off opened and closed valve 11 and steam reducing valve 12.After steam entered thermophore 3, with the heating of the water in the thermophore 3 accumulation of energy, water temperature rose to 300 ℃ for 180 ℃ in direct-fired mode, and promptly the temperature range of thermophore 3 steam import and exports is 180～300 ℃; Thermophore 3 steam inlet pressure reach 2.0～6.0MPa; After water is finished heating, open steam reducing valve 12, steam more than needed replenishes steam for steam distributor 6 by pipeline 34, and the thermophore steam exit pressure reaches 1.0～3.5MPa.In steam distributor 6, by the steam of thermophore 3 input with by steam summary device 41 by the road the steam of 38 inputs converge, mixed steam enters in the superheater 5 through steam distributor outlet valve 14 and superheater inlet valve 15 in steam distributor 6.Superheater 5 utilizes the hot flue gas of combustion chamber 30 in the mode of heat exchange, and vapor temperature is heated to 220～450 ℃, and the steam inlet temperature of superheater 5 is 180～300 ℃, and steam exit temperature is 220～450 ℃; The steam inlet pressure of superheater 5 is 2.0～6.0MPa, and steam exit pressure is 0.5～3.5MPa, and the steam after heating enters turbo-generator 40 through superheater outlet regulating valve 17 and pipeline 37 and generates electricity.The final smog discharge temperature of combustion chamber 30 is 160～200 ℃.
Steam in steam distributor 6 is imported superheater 5 continuously, cause when vapor pressure reduces in the steam distributor 6, the steam of opening thermophore 3 opens and closes valve 11, steam off reducing valve 12, vapor pressure reduces in the thermophore 3, reduce to 1.0～4.0MPa by 2.5～6.0MPa, 3 external heat releases of thermophore, make the high temperature saturation water flash to steam, input steam distributor 6, replenish the steam in the steam distributor 6,, guarantee to supply with stable and competent steam to turbo-generator 40 so that it is constant to keep the vapor pressure and the flow of steam distributor 6 outputs.The steam exit temperature of superheater 5 is regulated and is controlled by the spray cooling device 42 and the superheater desuperheat valve 16 that are arranged in the pipeline 44.
In sum, when the coal gas of converter abundance, the steam that vapour generator 2 is produced for a long time, excessive steam enters drum 1, and input thermophore 3, high-temperature steam heats the water in the thermophore 3, store with the heat energy form, the not enough or interruption when coal gas of converter is perhaps when converter waste heat boiler steam and other fluctuation or non-fluctuation afterheat steam deficiency, the steam of steam summary device 41 outputs after a little while, close the steam reducing valve 12 of thermophore 3, open steam and open and close valve 11, the high temperature saturation water in the thermophore 3 flashes to steam rapidly, and in the input steam distributor 6, vapor pressure and flow that steam distributor 6 is supplied with to superheater 5 are constant.That is to say that under the changeable situation of coal gas that converter is supplied with and afterheat steam, the present invention still can supply pressure and the stable steam of flow, guarantees the needs of generating.
Compared with prior art, the present invention has following advantage:
(1) under the changeable situation of coal gas of converter and afterheat steam, still can guarantee that turbo-generator can generate electricity sustainedly and stably to turbo-generator supply pressure and all stable steam of flow, satisfy customer requirements.
(2) can fully utilize byproduct-coal gas and the afterheat steam of converter except that steel-making, improve the comprehensive utilization ratio of enterprise, improve the comprehensive benefit of enterprise.
(3) comprehensive cost of reduction enterprise.
(4) minimizing is to the pollution of environment.
Embodiment
According to coal gas of converter of the present invention and afterheat steam comprehensive utilization power generation assembly, and above-mentioned specific implementation process, carried out three tests, three tests have related parameter as shown in table 1.Wherein thermophore is in heat accumulation and exothermic process, and its temperature is to change, so in three tests, this parameter is a scope.
The relevant concrete parameter of table 1 coal gas of converter with three tests of afterheat steam comprehensive utilization generating
Claims (3)
1 one kinds of coal gas of converter and waste heat boiler integrated steam using power generation assembly comprise combustion chamber (30), drum (1), vapour generator (2), burner (8), economizer (4), air preheater (7), superheater (5), turbo-generator (40) and corresponding pipeline and valve; Burner (8) straight through combustion chamber (30), vapour generator (2) and superheater (5) are in the top of combustion chamber (30), economizer (4) and air preheater (7) then are in the flue of combustion chamber (30), vapour generator (2) links to each other with drum (1) with water lines (29) by steam pipe road (28), superheater (5) links to each other with feedwater piping (27) with superheater desuperheat valve (16) by pipeline (44), superheater (5) links to each other with turbo-generator (40) with superheater outlet regulating valve (17) by pipeline (37), economizer (4) links to each other with drum (1) with carbonated drink outlet valve (18) by feedwater piping (27), air preheater (7) links to each other with burner (8) with air control valve (19) by pipeline (26), and coal gas of converter pipeline (25) links to each other with burner (8) by gas regulator (20); It is characterized in that:
(1) this device also contains thermophore (3), steam distributor (6) and corresponding pipeline and valve, thermophore (3) links to each other with drum (1) with main steam stop valve (10) and steam inlet valve (21) by pipeline (32), thermophore (3) also opens and closes valve (11) by steam, pipeline (33), and link to each other with steam distributor (6) by steam reducing valve (12) and pipeline (34) branch two-way, steam distributor (6) is by steam distributor outlet valve (14), superheater inlet valve (15) links to each other with superheater (5) with pipeline (31), and steam distributor (6) links to each other by pipeline (38) and converter waste heat boiler steam and other fluctuation or non-fluctuation afterheat steam summary device (41);
(2) superheater spray cooling device (42) is installed on the intermediate duct of superheater (5).
2. device according to claim 1, the steam inlet pressure that it is characterized in that thermophore (3) is 2.0～6.0MPa, and steam exit pressure is 1.0～3.5MPa, and the temperature range of thermophore (3) steam import and export is 180～300 ℃.
3. device according to claim 1, the steam inlet temperature that it is characterized in that superheater (5) is 180～300 ℃; Temperature out is 220～450 ℃; The steam inlet pressure of superheater (5) is 2.0～6.0MPa; Steam exit pressure is 0.5～3.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100585420A CN1240852C (en) | 2004-08-19 | 2004-08-19 | Electricity generating apparatus of comprehensive using rotating furnace gas and waste heat of steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100585420A CN1240852C (en) | 2004-08-19 | 2004-08-19 | Electricity generating apparatus of comprehensive using rotating furnace gas and waste heat of steam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1597999A CN1597999A (en) | 2005-03-23 |
| CN1240852C true CN1240852C (en) | 2006-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100585420A Expired - Fee Related CN1240852C (en) | 2004-08-19 | 2004-08-19 | Electricity generating apparatus of comprehensive using rotating furnace gas and waste heat of steam |
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| Country | Link |
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| CN (1) | CN1240852C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052108A (en) * | 2010-09-30 | 2011-05-11 | 天壕节能科技股份有限公司 | Heat accumulating type power generation adjusting device and heat accumulating type power generation heating device |
| CN103343955A (en) * | 2013-07-25 | 2013-10-09 | 南京凯盛开能环保能源有限公司 | Comprehensive recycling boiler device of extra coal gas and saturated steam of steel plant |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476015B (en) * | 2008-01-02 | 2010-09-01 | 中冶京诚工程技术有限公司 | AOD converter flue gas waste heat recovery device |
| CN101482373B (en) * | 2009-01-19 | 2012-07-04 | 徐文玉 | Waste heat recovery and utilization system for waste gas of revolving furnace |
| CN101545725B (en) * | 2009-05-01 | 2011-08-17 | 枣庄新中兴实业有限责任公司 | Power generation process with waste heat of tunnel kiln |
| CN101691624B (en) * | 2009-09-21 | 2011-10-05 | 无锡市东方环境工程设计研究所有限公司 | Purifying and recovering process of absolute dry bag-type converter gas negative energy |
| CN102297604A (en) * | 2011-06-03 | 2011-12-28 | 句容市华联特种设备制造有限公司 | Refining furnace residual heat recovery continuously steam supply method and device thereof |
| CN102384459B (en) * | 2011-11-02 | 2012-12-26 | 苏州海陆重工股份有限公司 | Waste heat boiler for preparing olefins from methanol |
| CN103205516B (en) * | 2013-04-03 | 2015-05-06 | 北京首钢股份有限公司 | Method and device for desalting blast furnace gas |
| CN106052407B (en) * | 2016-08-08 | 2018-06-01 | 中冶华天南京工程技术有限公司 | heating furnace waste heat comprehensive utilization system |
-
2004
- 2004-08-19 CN CNB2004100585420A patent/CN1240852C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052108A (en) * | 2010-09-30 | 2011-05-11 | 天壕节能科技股份有限公司 | Heat accumulating type power generation adjusting device and heat accumulating type power generation heating device |
| CN102052108B (en) * | 2010-09-30 | 2013-11-13 | 天壕节能科技股份有限公司 | Heat accumulating type power generation adjusting device and heat accumulating type power generation heating device |
| CN103343955A (en) * | 2013-07-25 | 2013-10-09 | 南京凯盛开能环保能源有限公司 | Comprehensive recycling boiler device of extra coal gas and saturated steam of steel plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1597999A (en) | 2005-03-23 |
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Address after: 100081 Beijing city Haidian District willow Yangchun Sinorama homes Maple Garden 8 1205 Patentee after: Beijing bpbk energy-saving environmental protection Limited by Share Ltd Address before: 100081 Beijing city Haidian District willow Yangchun Sinorama homes Maple Garden 8 1205 Patentee before: Beijing Bopeng Beike Technology Co., Ltd. |
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