EP1819909A1 - Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant - Google Patents

Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant

Info

Publication number
EP1819909A1
EP1819909A1 EP05803061A EP05803061A EP1819909A1 EP 1819909 A1 EP1819909 A1 EP 1819909A1 EP 05803061 A EP05803061 A EP 05803061A EP 05803061 A EP05803061 A EP 05803061A EP 1819909 A1 EP1819909 A1 EP 1819909A1
Authority
EP
European Patent Office
Prior art keywords
water
steam
power plant
pressure stage
steam power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05803061A
Other languages
German (de)
English (en)
Inventor
Michael SCHÖTTLER
Anja Wallmann
Rainer Wulff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP05803061A priority Critical patent/EP1819909A1/fr
Publication of EP1819909A1 publication Critical patent/EP1819909A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/06—Treating live steam, other than thermodynamically, e.g. for fighting deposits in engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F01K23/106—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with water evaporated or preheated at different pressures in exhaust boiler

Definitions

  • the present invention relates to a method for operating a steam power plant and more particularly to a method for operating a power plant for generating at least electrical energy with a steam power plant, wherein the steam ⁇ power plant has a water cycle with at least one pressure ⁇ level and water if necessary from the Water cycle ⁇ run or from the pressure stages, can be drained.
  • the power plant has at least one electric generator which can be driven by the steam power plant.
  • the invention also relates to a steam power plant for generating electrical energy minimum to ⁇ at which the inventive process can be performed.
  • Such a steam power plant usually includes one or more circulating steam generators with steam drums (pressure drums) with associated heating surfaces.
  • steam drums pressure drums
  • Pressure stage of the steam turbine can be supplied.
  • the steam turbine ⁇ may also comprise one or more so-called.
  • a disadvantage of the prior art is in particular that the dewatered deionized produced at high cost is not returned to the water cycle, but discarded in the form of waste water into the environment. Therefore, in conventional steam power plants, the costs incurred for deionized, especially in frequent take-off and start-up operations, significantly increased. In addition, the environment is significantly burdened by the high discharge of wastewater.
  • the nachgepeiste is significantly burdened by the high discharge of wastewater.
  • Deionate has high oxygen and carbon dioxide levels that require ei ⁇ ne degassing of the deionized, whereby the startup time of the steam power plant is extended.
  • the object of the invention is to eliminate the disadvantages of the prior art. In detail, it is therefore the task the invention, the ongoing costs of a steam power plant and a power plant for the production of electrical energy with such a steam power plant, which arise by the Deionatbe- provision to significantly reduce. Another object of the invention is to significantly reduce the pollution of the environment by wastewater and the consumption of water. It is also an object of the invention to shorten the startup time of the steam power plant ⁇ with low resources.
  • the object is according to the invention with a method with the
  • the invention has the advantage over the prior art that the costs for the provision of deionized water, especially in the case of frequent take-off and start-up operations, are significantly reduced. With the help of the invention it is also possible to operate steam power plants in regions with severe lack of water. Furthermore, much water can be saved by the invention and the environment is less burdened with Cleange ⁇ benem wastewater.
  • the start-up time of the steam power plant or the power plant is shortened. In particular, this is achieved by the feedback of substantially all of the dehydrated water, wherein substantially implies, for example, be ⁇ that approximately 99% of the drained amount of water is Retired ⁇ leads.
  • At least one further pressure level is included, the pressure level of which is lower than that of the highest pressure level, whereby all pressure levels can also be included in a corresponding further training.
  • all pressure levels can also be included in a corresponding further training.
  • the dewatered water is subjected to a liquid water vapor separation, wherein the separated steam can be supplied to the condenser of the steam power plant.
  • the result ⁇ separated clean steam can be easily cooled by this measure in the condenser and liquefied. A special cooling measure on the stored water can thus largely be avoided. It is also given in this way a simp ⁇ che recycling collected water in the water cycle.
  • the accumulating during a shutdown process drained water is only as far back into the water cycle Retired ⁇ that at the end of the shutdown process, so at standstill, the drainable water, so the maximum drainable What ⁇ sermenge is attached stores , Furthermore, the so drained water quantity is then the water cycle next to ⁇ driving process again is supplied.
  • At least part of the dehydrated water is returned to the water circulation via a water treatment plant. At least a part of the
  • Condenser water are also passed through the water treatment plant, where it also possible lent is the two partial streams before entry into the Wasserauf ⁇ treatment plant to mix.
  • the nature, in particular the degree of soiling, of the water supplied to the water treatment plant can thus be adjusted.
  • the burden on the water treatment plant can thus be easily protected against overloading.
  • Fig. 1 shows an embodiment of a steam power plant according to the invention with three pressure levels.
  • a first embodiment of an inventions ⁇ to the invention steam power plant 2 is shown.
  • the steam power anläge 2 is part of a power plant 1, which may be the game as embodied in a power plant ⁇ also as a combined gas and steam turbine ⁇ .
  • the steam power plant 2 comprises a steam turbine 4 with different issue in the embodiment under three ⁇ pressure ranges.
  • the steam power plant 2 in the exemplary embodiment, a water cycle with essentially the steam turbine 4, a condenser 6, a condensate pump 7 and three pressure stages 8, 9, 10, which are each associated with the individual respective pressure ranges of the steam turbine 4.
  • the water cycle also includes a feedwater pump, not shown.
  • the pressure stages 8, 9, 10 are connected to the pressure ranges of the steam turbine 4 in each case by steam lines 11.
  • the pressure stages 8, 9, 10 are divided into the first pressure stage 8 designed as a high-pressure stage, the second pressure stage 9 designed as a medium-pressure stage and the third pressure stage 10 designed as a low-pressure stage.
  • the first pressure stage 8 of the water circuit has an running steam generator 12 with a continuous heating surface 16 and ei ⁇ ner separator bottle 15.
  • the second pressure stage 9 has a first circulation steam generator 13 with a first pressure drum 17 and a first circulation heating surface 18 designed as a circulation evaporator.
  • the third pressure stage 10 constructed similar to the second pressure stage 9 has a second circulation steam generator 14 with a second pressure drum 19 and a second circulation heating surface 20 designed as a circulation evaporator.
  • the heating surfaces 16, 18, 20 are arranged in a boiler 5, which may be formed, for example, as in the embodiment as a horizontal waste heat boiler and is fed by the exhaust gases of a gas turbine, not shown.
  • the steam generators 12, 13, 14 is in each case an over ⁇ superheater 21 downstream in the embodiment.
  • the output of the respective superheater 21 is connected via the respective steam line 11 with its associated pressure range of the steam turbine 4 in connection.
  • Each steam line 11 is part of each pressure stage 8, 9, 10th
  • the emerging from the high pressure region of the steam turbine 4 in the form of steam water is conventionally supplied to the next lower pressure stage via lines, which are not shown for the sake of clarity.
  • exporting ⁇ approximately example of the steam turbine 4 in the form of steam escaping water is supplied so the second pressure stage 9 from the high pressure region.
  • From the medium pressure range of the steam turbine 4 in the form of steam escaping water is the third pressure stage 10, and thus at the end and the lowest pressure range of the steam turbine 10 is supplied.
  • the water emerging from the low-pressure region of the steam turbine 4 is supplied to the condenser 6 for cooling and liquefaction via an exhaust steam line 41.
  • the exhaust steam line 41 closes the water cycle of the steam power plant 2 between the steam turbine 4 and the condenser 6.
  • the water emerging from the condensate pump 7 is supplied via the feedwater pump, not shown, mainly the first pressure stage 8.
  • 9 10 amount of water flowing in the first pressure stage 8 amount of water in the embodiment in operation has a share of about 75%, as in her compared to the other pressure levels 9, 10 significantly more power is implemented ,
  • the energy supplied in the steam of the steam turbine 4 is converted into rotational energy in the steam turbine 4 and thus delivered to the connected electric generator 3.
  • ⁇ watered water is added tung 22 first through a Sammelvorrich ⁇ , which in the embodiment by a first raw line bundle 23 and a second pipe bundle 24 is out ⁇ , collected.
  • ⁇ 17 and 19 continuously dehydrated in nominal operation of the steam turbine 2 water drums. This process is also referred to as sludging, since accumulated by the circulation operation in the pressure drums 17, 18, which must be ablated. For example, about 0.5% to 1% of the throughput of water of the printing drum 17, 18 constantly ent ⁇ watered.
  • the in the embodiment of the pressure stages 8, 9, 10 ent ⁇ watered and collected water is then angespei ⁇ chert.
  • a plurality of storage containers 25, 26, 27 and 28 are provided, which may be more or less filled depending on the operating state of the power plant 1.
  • the out of the pressure drums 17, 19 dewatered water chert 15 drained water and the dehydrated from the superheaters 21 water is first supplied from the trap bottle to the first storage tank 25 and angespei there ⁇ .
  • the first storage tank 25 is sized so ⁇ laid out that he can initially accumulate when starting up or shutdown of the steam power plant 2 very high supply of dehydrated water for some time and so can buffer.
  • the first storage tank 25 acts as a first separator 32 because the hot, drained water in the first Spei ⁇ cher varietieser 25 evaporates, liquid water is overall steam separates, wherein the in itself impurities of impurities via a first return line 29 to the input of the capacitor 6 is supplied and the liquid water is initially stored in the storage tank 25. If necessary, liquid water stored in the first storage tank 25 is pumped into a third storage tank 27 by means of a first pump 34. By a arranged after the output of the first pump 34 branch, the pumped amount of water can be partially or completely pumped through a first cooler 37 back into the first storage tank 25 by a corresponding position of a valve, not shown. As a result, additional cooling of the water stored in the first storage tank 25 is possible. In particular, can be reduced by the use of the first radiator 37, the evaporating amount of water and the heat load of the capacitor 6 verrin ⁇ siege.
  • the water drained from the steam lines 11 of the pressure stages 8, 9, 10 is dewatered through the second pipe bundle 24 and stored in the second storage tank 26.
  • a cooling circuit consisting of a second pump 35 and a second cooler 38 is also associated with the second storage tank 26.
  • the second storage tank 26 has a second separating device 33, which is provided as in the first storage tank 25, wherein the water vapor, which is clean per se, can also be fed to the inlet of the condenser 6 via a second return line 30.
  • the liquid water stored in the second storage tank 26 can also be supplied to the third storage tank 27 via the second pump 35 if required.
  • This is stored in the third storage vessel 27 diessigwas ⁇ ser is in the exemplary embodiment, if necessary via a third cooler 39, a third pump 36, and a water treatment anläge 40 to the input of the condensate pump 7 through a third recirculation line 31 is supplied.
  • the water treatment system 40 is connected so ⁇ and is arranged that it is passed in the entire liquid phase of the water the dehydrated and conditioned before this liquid phase ⁇ réellege- in the water circuit of the steam turbine 2 is lead.
  • the entire water emerging from the third storage tank 27 is passed through the water treatment plant 40 and processed there.
  • the water treatment plant 40 is arranged in the secondary flow of the water circulation ⁇ run, wherein a partial flow of the condensate from a fourth condensate container formed as a fourth storage tank 28 exiting water via the third pump 36 of the water treatment plant 40 can be fed.
  • the partial flow can be mixed with the liquid water coming from the third storage tank 27 before it reaches the water treatment plant 40.
  • the well as the whole are guided from the Kon ⁇ capacitor 6 water exiting through the water treatment system 40, wherein the water treatment system 40 then is located in the main flow of the emerging from the condenser 6 water.
  • the entire amount of dewatered water accumulating over a certain period of time is collected in the exemplary embodiment, stored to a certain extent and then released to the water cycle.
  • the water drained from all pressure stages 8, 9, 10 is collected, stored and returned.
  • the water from only one, preferably the highest pressure stage 8 dehydrated water can be collected in this way, stored and returned.
  • the inventive arrangement and application of the water treatment plant 40 inariessbei ⁇ game since in the embodiment in the highest pressure stage 8, a continuous steam generator 12 is used.
  • Throughput steam generator 12 place increased demands on the water quality, which can be usually produced only by the treatment plant Wasseraufberei ⁇ 40 and secured.
  • the other requirements for water quality compared to the requirements of circulating steam generators 13, 14 relate in particular to the pH value and the oxygen content. Since the water ⁇ treatment plant 40 because of the once-through steam generator 12 is necessary anyway, it is more advantageous, the comparatively ⁇ as low from the circulation steam generator 13, also due 14 dewatered amounts of water through the water treatment system 40 to the water circuit, as this fen to Verwer ⁇ .
  • the Wasseraufbreitungsstrom 40 may, in particular a mechanical ⁇ African cleaning and a cation / anion exchanger have.
  • the Wasseraufbreitungsstrom 40 prepares led him fed ⁇ water in particular with regard to its chemical properties egg on.
  • the entire water circuit in particular the Sammelvorrich ⁇ tung 22, the storage containers 25, 26, 27, 28 and the return lines 29, 30, 31, are to the atmosphere off closed to prevent an uncontrolled entry of air into the dehydrated water.
  • the features of the embodiment may be bined together kom ⁇ .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'un groupe-vapeur (2) et d'une centrale électrique (1) ainsi qu'un groupe-vapeur (2) correspondant. L'eau drainée d'au moins un étage de pression (8, 9, 10) du groupe-vapeur (2) est sensiblement entièrement collectée, enrichie et renvoyée au circuit d'eau du groupe-vapeur (2).
EP05803061A 2004-11-30 2005-11-16 Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant Withdrawn EP1819909A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05803061A EP1819909A1 (fr) 2004-11-30 2005-11-16 Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04028295A EP1662096A1 (fr) 2004-11-30 2004-11-30 Procédé de fonctionnement d'une centrale à vapeur, notamment d'une centrale à vapeur pour la production de l'éléctricité au moins et la centrale à vapeur correspondante
PCT/EP2005/056008 WO2006058845A1 (fr) 2004-11-30 2005-11-16 Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant
EP05803061A EP1819909A1 (fr) 2004-11-30 2005-11-16 Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant

Publications (1)

Publication Number Publication Date
EP1819909A1 true EP1819909A1 (fr) 2007-08-22

Family

ID=34927576

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04028295A Withdrawn EP1662096A1 (fr) 2004-11-30 2004-11-30 Procédé de fonctionnement d'une centrale à vapeur, notamment d'une centrale à vapeur pour la production de l'éléctricité au moins et la centrale à vapeur correspondante
EP05803061A Withdrawn EP1819909A1 (fr) 2004-11-30 2005-11-16 Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04028295A Withdrawn EP1662096A1 (fr) 2004-11-30 2004-11-30 Procédé de fonctionnement d'une centrale à vapeur, notamment d'une centrale à vapeur pour la production de l'éléctricité au moins et la centrale à vapeur correspondante

Country Status (6)

Country Link
US (1) US7886538B2 (fr)
EP (2) EP1662096A1 (fr)
JP (1) JP4901749B2 (fr)
KR (1) KR101259515B1 (fr)
CN (1) CN101065559B (fr)
WO (1) WO2006058845A1 (fr)

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CN106895388A (zh) * 2016-12-30 2017-06-27 芜湖顺景自动化设备有限公司 安全节能的智能光速蒸汽机设备

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US8984892B2 (en) * 2009-03-31 2015-03-24 General Electric Company Combined cycle power plant including a heat recovery steam generator
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CN103732989B (zh) 2012-01-17 2016-08-10 阿尔斯通技术有限公司 单程水平蒸发器中的管和挡板布置
CN103717969B (zh) 2012-01-17 2016-02-10 阿尔斯通技术有限公司 用于单程水平蒸发器的启动系统
KR101245088B1 (ko) 2012-08-13 2013-03-18 서영호 전기로를 이용한 발전장치
DE102012217717A1 (de) * 2012-09-28 2014-04-03 Siemens Aktiengesellschaft Verfahren zur Rückgewinnung von Prozessabwässern einer Dampfkraftanlage
EP2746656A1 (fr) * 2012-12-19 2014-06-25 Siemens Aktiengesellschaft Drainage d'une centrale
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KR20170105596A (ko) * 2015-01-23 2017-09-19 지멘스 악티엔게젤샤프트 발전소에서의 미처리수의 예열
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CN106895388A (zh) * 2016-12-30 2017-06-27 芜湖顺景自动化设备有限公司 安全节能的智能光速蒸汽机设备

Also Published As

Publication number Publication date
US20080104959A1 (en) 2008-05-08
CN101065559B (zh) 2011-07-13
JP2008522124A (ja) 2008-06-26
CN101065559A (zh) 2007-10-31
KR101259515B1 (ko) 2013-05-06
EP1662096A1 (fr) 2006-05-31
US7886538B2 (en) 2011-02-15
JP4901749B2 (ja) 2012-03-21
KR20070089837A (ko) 2007-09-03
WO2006058845A1 (fr) 2006-06-08

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