EP1706667A1 - Procede et dispositif de deflegmation dans un groupe-vapeur - Google Patents

Procede et dispositif de deflegmation dans un groupe-vapeur

Info

Publication number
EP1706667A1
EP1706667A1 EP04787068A EP04787068A EP1706667A1 EP 1706667 A1 EP1706667 A1 EP 1706667A1 EP 04787068 A EP04787068 A EP 04787068A EP 04787068 A EP04787068 A EP 04787068A EP 1706667 A1 EP1706667 A1 EP 1706667A1
Authority
EP
European Patent Office
Prior art keywords
water
steam
separated
power plant
separation
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.)
Granted
Application number
EP04787068A
Other languages
German (de)
English (en)
Other versions
EP1706667B1 (fr
Inventor
Rainer Wulff
Michael SCHÖTTLER
Anja Wallmann
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 EP04787068.8A priority Critical patent/EP1706667B1/fr
Priority to PL04787068T priority patent/PL1706667T3/pl
Publication of EP1706667A1 publication Critical patent/EP1706667A1/fr
Application granted granted Critical
Publication of EP1706667B1 publication Critical patent/EP1706667B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/486—Devices for removing water, salt, or sludge from boilers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/54—De-sludging or blow-down devices

Definitions

  • the present invention relates to a method and a device for dewatering in a steam power plant.
  • the present invention further relates to a steam power plant.
  • Such a steam power plant usually contains one or more steam drums with associated evaporators, with which, in particular at different pressure levels, steam is generated, which can be fed to a steam turbine.
  • Contaminations in the water-steam circuit of the steam power plant must be removed.
  • a concentration of impurities arises in the steam drum. Due to the removal of saturated steam from the steam drum remain non-volatile substances in the steam drum. These non-volatile substances are removed from the circulation by leaching.
  • effluents and steam through drainages which contain no impurities, but still largely discarded and not used.
  • the replenished deionate has high levels of oxygen and carbon dioxide, which require degassing of the deionate, thereby extending the startup time of the steam raft. Furthermore, costs are incurred and the environment is burdened.
  • the invention has for its object to enable a technically effective way of dewatering in a steam power plant, the burden on the environment should be low. In particular, no contaminated water should be released and it should be handled sparingly with the water.
  • This object is achieved according to the invention with a method and a device for dewatering in a steam power plant, wherein according to a degree of contamination of a number of partial amounts of water a separate collection of the respective partial amounts of water is performed.
  • the object is likewise achieved with a steam power plant which has a device according to the invention.
  • the possibility is advantageously created to significantly reduce the waste water accumulation. As a result, environmental requirements are more easily met. In addition, less deionate must be refilled.
  • the method and apparatus of the present invention is applicable to both steam and steam-driven steam generators (e.g., a forced-circulation boiler).
  • a steam power plant without a steam drum only the sludge and / or a subsequent cleaning is eliminated.
  • the advantage of the invention lies in particular in relation to an introduction of the drains directly into a condenser in that the condenser does not have to be used for receiving water or steam when the steam power plant is at a standstill. At standstill, particularly large quantities of stationkondensat, which are fed into the water * steam cycle.
  • At least one steam drum is taken off an amount of water (eg drum slurry) and fed to a " water treatment.” This can be used to clean a water-steam cycle of the steam power plant and to feed in the recovered, clean water.
  • At least one superheater and / or one steam line a further amount of the water (for example, drainage condensate or steam) is removed and fed to a storage tank. It is thus ensured that even in these components accrued water, not from the
  • Turbine can be processed, recycled into the circuit.
  • This additional amount of water can be supplied to the water-steam cycle of Dampfkraftanläge without prior water treatment, so that the accumulation of wastewater can be kept small.
  • the water removed from the steam drum is subjected to a first water-steam separation and the separated and concentrated water is fed to the water treatment.
  • the separated clean steam and the further amount of water taken from the at least one superheater and / or the steam line is fed to a second water-steam separation. This can minimize the amount of water that needs to be cleaned.
  • the water separated during the first or second water-steam separation is supplied to the storage container.
  • This water is clean and does not have to go on be recycled to be re-injected into the water-steam cycle.
  • the steam separated in the first or second water-vapor separation is fed to a condenser.
  • a return of the steam is given in a simple way in the water-steam cycle.
  • the water contained in the storage tank is kept isolated from the ambient air.
  • Fig. 1 shows a first embodiment of a dewatering device according to the invention a steam power plant with a steam drum and
  • Fig. 2 shows a second embodiment of the invention EntskyssVorraum the Dampfkraftanläge with three steam drums, which have different pressure levels.
  • FIG. 1 shows a first embodiment of a dewatering device 1 according to the invention, which is part of a steam power plant 2 for generating electricity.
  • the dewatering apparatus 1 is sealed from the atmosphere to prevent air leakage into the water-steam cycle of the To prevent steam power plant 2.
  • various components of Dampfkraftanläge 2 are connected by means of lines for the transmission of water or steam. Dashed lines indicate dirty water lines, dashed lines indicate clean water lines and solid lines clean steam lines.
  • the steam power plant 2 contains one or more steam turbines 3, whose steam is supplied via a superheater.
  • FIG. 1 shows a combination of the superheater and an evaporator with the reference numeral 4.
  • the drainage device 1 contains a tank, which is designed as a separator tank 5 for water-steam separation. An input of the separator tank 5 is connected via a line to an outlet of the evaporator / superheater combination 4. Via this line, a first partial amount of water is drained from the superheater contaminated water into the separator 5 and relaxed to further concentrate the Abschlimmernwasser and separate clean water in the form of vapor from the contaminated water.
  • the separated in the separator 5 contaminated and further concentrated water is conveyed via a line in a recycling tank in the form of a Atoschlämmtanks 21, and processed in a cleaning system or water treatment 6.
  • the treated water can be supplied to a condenser 7 of the steam power plant 2 for further utilization.
  • the steam separated in the separator tank 5 contains no impurities and is introduced into a tank.
  • the tank 8 is a flash tank and condensing tank, which is connected to the evaporator / superheater Kobination 4 and is introduced into the drained from the superheater, clean water as a second partial amount of water-
  • the tank 8 is compared with a so-called cushion steam to slight overpressure held the environment so that air or carbon dioxide is not registered in the water in the tank 8.
  • In the tank 8 also takes place a water-steam separation, wherein the Separated water is fed to a tank 9, which serves as a condensate storage tank.
  • the separated steam is fed to the condenser 7 via a suitable conduit.
  • the dewatering device 1 further comprises a tank 10, whose inlet is connected via a drainage line to a steam line 11 for supplying steam to the steam turbine 3.
  • This steam line 11 can thereby be dewatered in particular when starting and stopping the steam power plant 2 by the amount of water discharged during the dewatering as a third part of the water quantity is fed to the tank 10.
  • the water occurring during this drainage is clean.
  • the tank 10 is a flash tank and condensing tank in which a water-steam separation takes place.
  • the separated, clean water is supplied to the tank 9 and the separated, clean steam to the condenser 7.
  • the water condensate supplied to the tank 9 is cached under exclusion of air, in particular with the aid of auxiliary steam, and fed back to the water-steam cycle, if necessary, by being fed into the condenser 7.
  • the introduced from the tanks 8 and 10 in the condenser 7 steam is condensed in the operation of the steam power plant 2 in the condenser 7.
  • the connecting lines from the tank 8 and from the tank 10 to the condenser 7 are closed and the steam is cooled by a cooling water system of the steam power plant 2, condensed and the condensate fed to the tank 9.
  • the water in the condenser 7 is pumped via a hotwell into the steam drum of the steam drum / superheater combination 4, and the steam generated is then fed via the superheater to the steam drum / superheater combination 4 of the steam turbine 3.
  • the second tank 8 has been used to receive water from the steam drum / Mathhi zerKombination 4.
  • the tank 10 was used to receive water from the steam line 11. It is also possible to supply both the water from the steam drum / superheater combination 4 and the water from the steam line 11 to a common tank in which a water-steam separation can then be carried out.
  • the dewatering device 1 is part of the steam power plant 2, which here has three steam drums which have different pressure levels.
  • the steam power plant 2 here includes a high pressure (HD) steam drum 12 having an HD pressure level, a medium pressure (MD) steam drum 13 having an MD pressure level lower than the HD pressure level, and a depression (ND).
  • Print drum 14 with a ND pressure level that is lower than the MD pressure level.
  • Each of the three steam drums 12, 13, 14 is connected to the separator tank 5 for discharging polluted water discharged therefrom.
  • the contaminated water separated in the separator tank 5 is supplied to a slurry tank 21 for storing the contaminated water.
  • This sludge tank 21 can also be supplied with other contaminated liquids.
  • the cleaning system 6 receives from the Abschlämmtank 21 contaminated liquid, which is processed in the cleaning system 6.
  • the treated water can then be fed to the capacitor 7.
  • the separator tank 5 is also connected to a raw water tank 22 on the output side.
  • the three superheaters 15, 16, 17 are respectively connected to the tank 8 for introducing clean water or vapor occurring during their drainage.
  • the three steam lines 18, 19, 20, in turn, are each connected to the tank 10 for introducing clean water or steam occurring during their drainage.
  • the basic structure and the principle of operation of the dewatering apparatus 1 according to this second embodiment correspond to those of the first embodiment according to FIG. 1.
  • the structure and operation of the separator tank 5, the tank 8, the tank 9, the fourth tanks 10, and the cleaning system 6, and the structure of the connecting lines between these components and the other components of the steam power plant 2 correspond to those of the first embodiment according to FIG. 1.
  • the structure and operation of the separator tank 5, the tank 8, the tank 9, the fourth tanks 10, and the cleaning system 6, and the structure of the connecting lines between these components and the other components of the steam power plant 2 the structure and the operation, as described above with reference to the first embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Abstract

L'invention concerne un procédé et un dispositif (1) pour assurer une déflegmation dans un groupe-vapeur (2), ainsi qu'un groupe-vapeur (2). En fonction du degré d'impureté d'un nombre de quantités d'eau partielles, il est effectué une collecte séparée des quantités d'eau partielles concernées.
EP04787068.8A 2004-01-20 2004-09-30 Procede et dispositif de deflegmation dans un groupe-vapeur Not-in-force EP1706667B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04787068.8A EP1706667B1 (fr) 2004-01-20 2004-09-30 Procede et dispositif de deflegmation dans un groupe-vapeur
PL04787068T PL1706667T3 (pl) 2004-01-20 2004-09-30 Sposób i urządzenie do odwadniania w siłowni parowej

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04001042 2004-01-20
EP04787068.8A EP1706667B1 (fr) 2004-01-20 2004-09-30 Procede et dispositif de deflegmation dans un groupe-vapeur
PCT/EP2004/010936 WO2005068905A1 (fr) 2004-01-20 2004-09-30 Procede et dispositif de deflegmation dans un groupe-vapeur

Publications (2)

Publication Number Publication Date
EP1706667A1 true EP1706667A1 (fr) 2006-10-04
EP1706667B1 EP1706667B1 (fr) 2014-10-29

Family

ID=34778182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04787068.8A Not-in-force EP1706667B1 (fr) 2004-01-20 2004-09-30 Procede et dispositif de deflegmation dans un groupe-vapeur

Country Status (8)

Country Link
US (1) US7487640B2 (fr)
EP (1) EP1706667B1 (fr)
CN (1) CN100578083C (fr)
EG (1) EG24219A (fr)
ES (1) ES2523848T3 (fr)
IL (1) IL176839A (fr)
PL (1) PL1706667T3 (fr)
WO (1) WO2005068905A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102317595A (zh) * 2007-10-12 2012-01-11 多蒂科技有限公司 带有气体分离的高温双源有机朗肯循环
US20110094231A1 (en) * 2009-10-28 2011-04-28 Freund Sebastian W Adiabatic compressed air energy storage system with multi-stage thermal energy storage
ITMI20102121A1 (it) * 2010-11-16 2012-05-17 Ansaldo Energia Spa Impianto a ciclo combinato per la produzione di energia e metodo per operare tale impianto
WO2013170916A1 (fr) * 2012-05-14 2013-11-21 Siemens Aktiengesellschaft Procédé et dispositif d'épuration d'eaux usées industrielles
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
CN106062319B (zh) * 2014-03-05 2018-12-21 西门子公司 闪蒸槽设计
DE102015206484A1 (de) * 2015-04-10 2016-10-13 Siemens Aktiengesellschaft Verfahren zum Aufbereiten eines flüssigen Mediums und Aufbereitungsanlage
US11421663B1 (en) 2021-04-02 2022-08-23 Ice Thermal Harvesting, Llc Systems and methods for generation of electrical power in an organic Rankine cycle operation
US11592009B2 (en) 2021-04-02 2023-02-28 Ice Thermal Harvesting, Llc Systems and methods for generation of electrical power at a drilling rig
US11486370B2 (en) 2021-04-02 2022-11-01 Ice Thermal Harvesting, Llc Modular mobile heat generation unit for generation of geothermal power in organic Rankine cycle operations
US11187212B1 (en) 2021-04-02 2021-11-30 Ice Thermal Harvesting, Llc Methods for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on working fluid temperature
US11644015B2 (en) 2021-04-02 2023-05-09 Ice Thermal Harvesting, Llc Systems and methods for generation of electrical power at a drilling rig
US11293414B1 (en) 2021-04-02 2022-04-05 Ice Thermal Harvesting, Llc Systems and methods for generation of electrical power in an organic rankine cycle operation
US11493029B2 (en) 2021-04-02 2022-11-08 Ice Thermal Harvesting, Llc Systems and methods for generation of electrical power at a drilling rig
US11359576B1 (en) 2021-04-02 2022-06-14 Ice Thermal Harvesting, Llc Systems and methods utilizing gas temperature as a power source
US11480074B1 (en) 2021-04-02 2022-10-25 Ice Thermal Harvesting, Llc Systems and methods utilizing gas temperature as a power source

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Also Published As

Publication number Publication date
IL176839A0 (en) 2006-10-31
EP1706667B1 (fr) 2014-10-29
US7487640B2 (en) 2009-02-10
CN1926381A (zh) 2007-03-07
ES2523848T3 (es) 2014-12-02
WO2005068905A1 (fr) 2005-07-28
PL1706667T3 (pl) 2015-04-30
IL176839A (en) 2012-12-31
EG24219A (en) 2008-11-05
US20070289304A1 (en) 2007-12-20
CN100578083C (zh) 2010-01-06

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