WO2016116216A1 - Préchauffage d'eau brute dans des centrales électriques - Google Patents

Préchauffage d'eau brute dans des centrales électriques Download PDF

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Publication number
WO2016116216A1
WO2016116216A1 PCT/EP2015/079113 EP2015079113W WO2016116216A1 WO 2016116216 A1 WO2016116216 A1 WO 2016116216A1 EP 2015079113 W EP2015079113 W EP 2015079113W WO 2016116216 A1 WO2016116216 A1 WO 2016116216A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
water
raw water
wastewater
power plant
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.)
Ceased
Application number
PCT/EP2015/079113
Other languages
German (de)
English (en)
Inventor
Michael Haegel
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to CN201580074344.XA priority Critical patent/CN107208880A/zh
Priority to JP2017534669A priority patent/JP2018508732A/ja
Priority to EP15816388.1A priority patent/EP3204622B1/fr
Priority to KR1020177023085A priority patent/KR20170105596A/ko
Priority to US15/539,307 priority patent/US20180016947A1/en
Publication of WO2016116216A1 publication Critical patent/WO2016116216A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/28—Feed-water heaters, i.e. economisers or like preheaters for direct heat transfer, e.g. by mixing water and steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D7/00—Auxiliary devices for promoting water circulation
    • F22D7/04—Injectors for water or steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D7/00—Auxiliary devices for promoting water circulation
    • F22D7/12—Control devices
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type

Definitions

  • the invention relates to a method for preheating raw water, in particular in a power plant.
  • the invention further relates to a power plant with a water-steam cycle.
  • demineralized also: demineralized
  • the raw water does not have the temperature required for the production of deionized material, especially at low outside temperatures.
  • the raw water was previously preheated by steam or electrically, resulting in a high mechanical engineering or electrical engineering effort to reduce the efficiency or increased Eigenbe ⁇ may.
  • the task is to further develop the abovementioned method and apparatus so that a considerable reduction of the effort is achieved.
  • Wastewater is the water that leaves the water-steam cycle and is usually discharged into the cooling water or discarded after appropriate recooling.
  • wastewater is added to the raw water for heating the raw water, no heat losses occur, as in the case of heating via low-pressure steam. Also, with appropriate choice of wastewater, this can be used again as raw water.
  • Blowdown water from the steam generator is, in particular from steam drums.
  • wastewater is a condensate from the steam pipes, which are automatically dewatered at low points.
  • a raw water temperature is regulated via a change in a quantity of blow-off water.
  • the power plant comprising a steam ⁇ generator, a steam turbine and steam lines that at least partially connect the steam generator with the steam turbine, a raw water mixing device and a container for waste water from the water-steam cycle ,
  • the Rohwasser ⁇ mixing device and the container for wastewater from the water-steam cycle are fluidly interconnected, wherein in the raw water mixing device, a device for distributing the waste water is provided in the raw water. A distribution of the wastewater in the raw water improves the mixing.
  • the container for wastewater from the water-steam cycle is connected to the steam generator.
  • the steam drums of the steam generator falls regularly to drain water.
  • the container for wastewater from the water-steam cycle is connected to steam lines. These are automatically dewatered at their lowest points and the resulting condensate is usually not verunrei ⁇ tended.
  • a control device for regulating the raw water temperature is provided.
  • the optimum temperature for the production of deionized can be adjusted.
  • control for the raw water ⁇ temperature includes a control of Abschlemmiganmenge. Unlike condensate from the steam lines, the amount of drainage water can be adjusted easily.
  • Figure 1 shows a power plant
  • Figure 2 shows the method for preheating raw water according to the invention.
  • FIG. 1 shows a power plant 1 according to the invention.
  • the power plant 1 according to the figure 1 is designed as a gas and steam turbine plant, and includes a gas turbine nena sheet 11 and a steam turbine plant 12.
  • the Gasturbi ⁇ nena layer 11 comprises a gas turbine 13 with a coupled air compressor 14 and the gas turbine 13 upstream combustion chamber 15, which at a compressed air line 16 of the compressor 14 is connected.
  • the gas turbine 13 and the air compressor 14 and a generator 17 are arranged on a common shaft 18.
  • the fuel supply takes place via a fuel line 40.
  • the steam turbine plant 12 comprises a steam turbine 4 with a coupled generator 19 and in a water-steam circuit 2 a steam turbine 4 downstream condenser 20 and a heat recovery steam generator 3.
  • the steam turbine 4 is shown in Figure 1 very simplified and usually consists of several in large plants in the figure 1, not shown, which typically drive the generator 19 via a devissa ⁇ me shaft 21.
  • a feedwater tank / degasser 25 is over a
  • Condensate line 26 in which a condensate pump unit 27 is connected, with condensate from the condenser 20th
  • a feed water pump 28 brings the feed water flowing out of the feed water tank / degasser 25 to a suitable pressure level.
  • the feed water is fed to a corresponding pressure stage in the heat recovery steam generator 3 via a feedwater preheater 29, which is connected on the output side to a steam drum 30.
  • the steam drum 30 is connected to a heat recovery steam generator is arrange ⁇ th in 3 evaporator 31 to form a water-steam circulation.
  • the steam drum 30 is connected to a superheater 32 arranged in the heat recovery steam generator 3, which is connected on the output side via steam lines 5 to a steam inlet 33 of the steam turbine 4.
  • a steam extraction 34 for a steam supply system is shown by way of example.
  • steam decoupling may be provided at various points of the steam turbine, but also in the region of the heat recovery steam generator 3.
  • a condensate return 35 opens into the condensate line 26 by way of example.
  • the power plant 1 further comprises a Rohwassermisch- device 6 and a container 7 for wastewater from the
  • Water-steam cycle 2 which are fluid technically connected to each other according to the invention.
  • a device 8 for distributing the waste water in the raw water is provided.
  • the container 7 for wastewater from the water-steam cycle 2 is both with the steam generator 3 and there in particular with the steam drum 30, and connected to the steam pipes 5.
  • a crizeinrich-dev is provided 9, which on the one hand, detected by a temperature sensor 36, a current raw water temperature, and at the other ⁇ hand, with the into the water pipe 41 between container 7 and raw water mixing device 6 connected pump 37 an appropriate amount of waste water from the tank 7 in transported the raw water mixing device 6.
  • the heat requirement for the preheating of the raw water in the raw water mixing device 6 exceeds that which can be achieved by the presence in the container 7 What ⁇ sermenge, increasing the elutriated amount of water via an appropriate controller 10, even if this is due to a request to the water chemistry is not he ⁇ would be necessary.
  • FIG. 1 shows a device 38 for water treatment including demineralization, which is arranged between raw water mixing device 6 and feed water tank / degasser 25 with corresponding pumps 39.
  • FIG. 2 shows the method for preheating raw water in a power plant 1, in which raw water for a deionized production is heated by waste water from the water-steam circuit 2.
  • a first step 42 it is checked whether the temperature of the raw water has to be raised at all. If this is not the case, the process is ended 43. If the temperature of the raw water to be raised, is checked in a second step 44, if the existing amount of Ab ⁇ water would be sufficient for this purpose.
  • a third step 45 from the container 7 for wastewater from the water-steam cycle 2 wastewater is fed into the raw water mixing device 6. If the amount is insufficient, a fourth step 46 is performed in addition to the third 45, in which a further blowdown takes place, whereby the water inflow to the container 7 is raised.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Physical Water Treatments (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

L'invention concerne un procédé de préchauffage d'eau brute dans une centrale électrique (1) au moyen d'un circuit eau-vapeur (2), la centrale électrique (1) comprenant un générateur de vapeur (3), une turbine à vapeur (4) et des conduits de vapeur (5) dont au moins certains relient le générateur de vapeur (3) à la turbine à vapeur (4). L'eau brute destinée à la production d'eau déminéralisée est chauffée par l'eau d'évacuation sortant du circuit eau-vapeur (2) et l'eau d'évacuation est mélangée à l'eau brute pour chauffer l'eau brute. L'invention concerne en outre une centrale électrique (1).
PCT/EP2015/079113 2015-01-23 2015-12-09 Préchauffage d'eau brute dans des centrales électriques Ceased WO2016116216A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201580074344.XA CN107208880A (zh) 2015-01-23 2015-12-09 发电设施中的原水预热
JP2017534669A JP2018508732A (ja) 2015-01-23 2015-12-09 発電所設備における未処理水の予熱
EP15816388.1A EP3204622B1 (fr) 2015-01-23 2015-12-09 Préchauffage d'eau brute dans des centrales électriques
KR1020177023085A KR20170105596A (ko) 2015-01-23 2015-12-09 발전소에서의 미처리수의 예열
US15/539,307 US20180016947A1 (en) 2015-01-23 2015-12-09 Preheating of untreated water in power plants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015201143.7 2015-01-23
DE102015201143 2015-01-23

Publications (1)

Publication Number Publication Date
WO2016116216A1 true WO2016116216A1 (fr) 2016-07-28

Family

ID=55024070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/079113 Ceased WO2016116216A1 (fr) 2015-01-23 2015-12-09 Préchauffage d'eau brute dans des centrales électriques

Country Status (6)

Country Link
US (1) US20180016947A1 (fr)
EP (1) EP3204622B1 (fr)
JP (1) JP2018508732A (fr)
KR (1) KR20170105596A (fr)
CN (1) CN107208880A (fr)
WO (1) WO2016116216A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20240015A1 (fi) * 2024-03-05 2025-09-06 Vesa Juhani Hukkanen Painevoimakoneen laitejärjestelmä ja menetelmä

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052418A (fr) *
US20100199671A1 (en) * 2009-02-06 2010-08-12 Siemens Energy, Inc. Deaerator Apparatus in a Superatmospheric Condenser System
WO2012137010A2 (fr) * 2011-04-08 2012-10-11 Emvertec Limited Centrale à biomasse
CN202970814U (zh) * 2012-12-17 2013-06-05 严利 高温蒸汽余热发电节能系统
DE102012217717A1 (de) * 2012-09-28 2014-04-03 Siemens Aktiengesellschaft Verfahren zur Rückgewinnung von Prozessabwässern einer Dampfkraftanlage
US20140150699A1 (en) * 2011-07-29 2014-06-05 Siemens Aktiengesellschaft Method and fossil-fuel-fired power plant for recovering a condensate

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510755A (en) * 1983-08-10 1985-04-16 Transamerica Delaval Inc. Demineralization of feed water in a steam system
EP0340218A1 (fr) * 1986-11-25 1989-11-08 Spirax Sarco Limited Systeme de chaudiere a vapeur
EP1662096A1 (fr) * 2004-11-30 2006-05-31 Siemens Aktiengesellschaft 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
KR20080114274A (ko) * 2007-06-27 2008-12-31 엘지전자 주식회사 디지털 방송 신호와 상기 신호를 처리하는 방법 및 수신기
CN202132931U (zh) * 2011-06-28 2012-02-01 三峡电力职业学院 锅炉排污余热回收利用系统
CN202118881U (zh) * 2011-06-30 2012-01-18 内蒙古电力勘测设计院 电站生水加热系统
JP6191070B2 (ja) * 2012-05-25 2017-09-06 三菱重工環境・化学エンジニアリング株式会社 アンモニア処理システム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052418A (fr) *
US20100199671A1 (en) * 2009-02-06 2010-08-12 Siemens Energy, Inc. Deaerator Apparatus in a Superatmospheric Condenser System
WO2012137010A2 (fr) * 2011-04-08 2012-10-11 Emvertec Limited Centrale à biomasse
US20140150699A1 (en) * 2011-07-29 2014-06-05 Siemens Aktiengesellschaft Method and fossil-fuel-fired power plant for recovering a condensate
DE102012217717A1 (de) * 2012-09-28 2014-04-03 Siemens Aktiengesellschaft Verfahren zur Rückgewinnung von Prozessabwässern einer Dampfkraftanlage
CN202970814U (zh) * 2012-12-17 2013-06-05 严利 高温蒸汽余热发电节能系统

Also Published As

Publication number Publication date
JP2018508732A (ja) 2018-03-29
KR20170105596A (ko) 2017-09-19
EP3204622B1 (fr) 2018-08-01
US20180016947A1 (en) 2018-01-18
CN107208880A (zh) 2017-09-26
EP3204622A1 (fr) 2017-08-16

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