EP2609300A2 - Dispositif et procédé pour produire une vapeur d'eau surchauffée - Google Patents

Dispositif et procédé pour produire une vapeur d'eau surchauffée

Info

Publication number
EP2609300A2
EP2609300A2 EP11766961.4A EP11766961A EP2609300A2 EP 2609300 A2 EP2609300 A2 EP 2609300A2 EP 11766961 A EP11766961 A EP 11766961A EP 2609300 A2 EP2609300 A2 EP 2609300A2
Authority
EP
European Patent Office
Prior art keywords
water
steam
heat
reheater
heat transfer
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Withdrawn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
EP11766961.4A
Other languages
German (de)
English (en)
Inventor
Arno Czimczik
Guenther Beckesch
Waldemar Hoffmann
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
Publication of EP2609300A2 publication Critical patent/EP2609300A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
    • 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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
    • F01K7/22—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 the turbines having inter-stage steam heating
    • 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
    • F01K7/22—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 the turbines having inter-stage steam heating
    • F01K7/223—Inter-stage moisture separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/003—Devices for producing mechanical power from solar energy having a Rankine cycle
    • F03G6/005—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
    • 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
    • F22B37/26—Steam-separating arrangements
    • F22B37/266—Separator reheaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
    • F22G3/004—Steam tubes with steam flowing in opposite directions in one pipe, e.g. Field tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S90/00—Solar heat systems not otherwise provided for
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

Definitions

  • the invention relates to a device for generating superheated steam by means of solar energy and a method for generating superheated steam using the device. In addition, a use of the superheated steam is indicated.
  • solar thermal power plants as an alternative to conventional power generation is a way to defuse the existing carbon dioxide problem.
  • solar energy solar energy
  • ie electromagnetic radiation ⁇ ment of the sun converted into electrical energy.
  • a solar thermal power plant with indirect evaporation has a steam generator.
  • the steam generator includes a heat transfer circuit (primary circuit) with a heat ⁇ carrier medium and a water / steam circuit (secondarily circuit) with water.
  • the water and the water vapor act as working fluid.
  • the heat transfer medium of the heat transfer circuit absorbs the solar energy in the form of heat (thermal energy). That would ⁇ melic medium is heated.
  • the heat absorbed by the heat transfer medium is removed with the help of feedwater Preheater, evaporator and superheater transferred to the water or to the water vapor of the water / steam cycle This superheated steam is generated.
  • the stored in superheated steam thermal energy is used to Ge ⁇ win the electrical energy. It comes to the conversion of thermal energy into electrical energy.
  • the conversion of the thermal energy of the superheated steam into electrical energy takes place in the "conventional part of a solar thermal power plant, for example by means of a steam turbine, via which a generator is driven.
  • Object of the present invention is to show how efficiently superheated steam with low water content can be obtained with the help of solar energy, which can be used for the generation of electrical energy.
  • a device for generating superheated steam by solar energy comprising at least one heat transfer circuit with a heat transfer medium for receiving the solar energy in the form of heat and at least one water / steam cycle with water and / or steam for forming the superheated steam, wherein in the water / steam cycle the water and / or steam can flow in a flow direction, the heat transfer circuit and the water / water vapor Circuit for generating the superheated steam are thermally coupled to one another via at least one heat exchanger of at least one reheater , in which water / steam circuit in the flow direction before the heat exchanger at least one water separator for separating water and water vapor from each other, so that in the heat exchanger essentially only water vapor can pass, and the heat exchanger and the water separator are arranged in a common reheater pressure vessel.
  • a method for generating superheated steam using the device with the following process steps is given: a) providing the heat transfer medium, b) converting solar energy into heat of the heat transfer medium, c) providing a What ⁇ d) transfer of water from the water / water vapor mixture by means of the water separator and d) transfer of the heat of the heat transfer medium to the remaining water vapor of Was ⁇ water / steam mixture, wherein the superheated steam is generated.
  • a use of the superheated steam generated by the described method for obtaining electrical energy is specified, wherein with the aid of superheated steam, a steam turbine is driven.
  • the separated water is preferably supplied to the What ⁇ ser / steam cycle.
  • ⁇ one or more pumps are used.
  • the reheater With the reheater, the efficiency is increased, with which a downstream steam turbine is operated. With the reheater thermal energy is introduced into the water vapor of the water / steam cycle.
  • To introduce the thermal energy of the reheater is solar thermal operated:
  • the reheater has a reheater water pipe for receiving the water vapor.
  • For intermediate overheating hot with the aid of solar energy (electromagnetic radiation, which is sent from the sun ⁇ and meets the earth's surface) heated heat transfer medium is passed to the reheater water pipe.
  • Reheater water pipe and heat transfer medium are thermally coupled together. By passing the heat transfer medium, the water vapor in the reheater water pipe is overheated.
  • the reheater In order to effect the flow of the heat transfer medium to the reheater water pipe, for example, a heat transfer pump or a plurality of heat transfer pumps are used.
  • the heat transfer medium is pumped past the water pipe.
  • the reheater has a verti ⁇ cal structure, so that the hot heat transfer medium from "top to bottom” through the heat exchanger can flow .. With the vertical structure of the reheater beyond a natural movement of the water vapor in the ⁇ overheater water pipe exploited from "bottom to top".
  • the heat exchanger is arranged vertically above the water separator.
  • the separated water can be removed in a simple manner and fed to the water / steam circuit for further use.
  • the heat exchanger has at least one reheater water pipe for guiding the water vapor of the water / steam cycle.
  • the reheater water pipe has at least one tube shape selected from the group of straight shape, U-shape and helix shape.
  • the U-shape and the helical shape is provided for an efficient heat exchange.
  • the heat transfer medium flows in reheater heat transfer tubes.
  • the steam of the water steam cycle flows past the outer walls Eisenüb ⁇ heaters heat transfer tubes. This leads to heat transfer.
  • the heat exchanger has at least one reheater heat transfer tube for guiding the heat transfer medium of the heat transfer circuit.
  • the reheater heat carrier tube has at least one tube shape selected from the group of straight, U-shaped and helical shapes.
  • the U-shape and the helix shape ensure efficient heat exchange.
  • reheater water pipe bundle For a given pipe volume is a (total) pipe surface over which takes place the thermal coupling of the heat transfer medium and the water vapor is higher at an intermediate ⁇ superheater water tube bundle as compared to a single reheater water pipe.
  • the heat transfer medium can be routed channeled to the reheater water pipe or de: reheater water pipes over.
  • a plurality of Umleitblechen for changing the flow direction of the Wär meristo medium available.
  • a plurality of reheaters is present.
  • the plurality of steam generators are connected in parallel to a larger reheater unit.
  • FIG. 1 shows a first example of a device for generating superheated steam in a lateral view.
  • FIG. 2 shows a second example of a device for generating superheated steam in a lateral view.
  • the starting point is a device 1 for generating superheated steam 30 by means of solar energy.
  • the device comprises the following components: A heat transfer circuit 2 with a heat transfer medium 20 for receiving the solar energy in the form of heat and a water / steam circuit 3 with water and / or water vapor to form the superheated steam.
  • the water and / or the steam can flow in a flow direction 33 in the water / steam cycle.
  • the heat transfer circuit and the water / steam circuit are thermally coupled together to generate the superheated steam over at least one heat exchanger at least one reheater 4.
  • reheater hot heat transfer medium 22 is introduced.
  • Cold heat transfer medium 23 leaves the furnishedtau ⁇ shear of reheater and is again to receive solar energy available.
  • a water separator 5 for separating water and water vapor from each other is arranged in the flow direction in front of the heat exchanger, so that essentially only water vapor can enter the heat exchanger.
  • the heat exchanger and the water separator are arranged in a common reheater pressure vessel.
  • the water separated in the water separator 50 is returned to the water / steam cycle.
  • Example 2 The construction of the apparatus is similar to Example 1. Instead of U-tubes, reheater water pipes with helical shape are installed in the bundle. To reduce the flow area, the bundle is divided into two parts. The operating principle is comparable to that of the U-tube arrangement.
  • reheater water pipes having a U-shape and intermediate superheater ⁇ water pipes are used with helical shape.
  • examples include the leadership of the liquid heat transfer medium in the tube interior. It is used reheater heat transfer tubes with U-shape and / or reheater heat transfer tubes with helical shape. The water vapor of the water / steam cycle can flow past the outer surfaces of the reheater heat transfer tubes, resulting in the exchange of energy.
  • the device described is used to generate superheated steam by means of solar energy.
  • the following process steps are carried out: a) providing the heat transfer medium, b) converting solar energy into heat of the heat transfer medium, c) providing a water / water vapor mixture of the water / steam cycle, d) separating water from Water / steam mixture with the aid of the water separator and d) transferring the heat of the heat transfer medium to the remaining water vapor of Was ⁇ water / steam mixture, wherein the superheated steam is generated.
  • the generated, superheated steam is forwarded to a steam turbine for the production of electricity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention concerne un dispositif pour produire de la vapeur d'eau surchauffée à l'aide d'énergie solaire. Le dispositif présente les caractéristiques suivantes : au moins un circuit de transfert thermique doté d'un fluide caloporteur pour recevoir l'énergie solaire sous forme de chaleur et au moins un circuit eau/vapeur d'eau doté d'eau et/ou de vapeur d'eau pour former la vapeur d'eau surchauffée. Dans le circuit eau/vapeur d'eau, l'eau et/ou la vapeur d'eau s'écoule dans une direction d'écoulement. Le circuit de fluide caloporteur et le circuit eau/vapeur d'eau sont thermiquement couplés pour produire la vapeur d'eau surchauffée par l'intermédiaire d'au moins un échangeur de chaleur d'au moins un resurchauffeur. Au moins un séparateur d'eau pour séparer l'eau de la vapeur d'eau, est implanté en amont de l'échangeur de chaleur dans le circuit eau/vapeur d'eau vu dans la direction d'écoulement, de telle façon que sensiblement seule de la vapeur d'eau parvienne à l'échangeur de chaleur. L'échangeur de chaleur et le séparateur d'eau sont disposés dans un réservoir sous pression commun du resurchauffeur.
EP11766961.4A 2010-09-30 2011-09-29 Dispositif et procédé pour produire une vapeur d'eau surchauffée Withdrawn EP2609300A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010041734A DE102010041734A1 (de) 2010-09-30 2010-09-30 Vorrichtung und Verfahren zur Erzeugen von überhitztem Wasserdampf mittels solarthermisch betriebenem Zwischenüberhitzer sowie Verwendung des überhitzten Wasserdampfs
PCT/EP2011/067027 WO2012041980A2 (fr) 2010-09-30 2011-09-29 Dispositif et procédé pour produire une vapeur d'eau surchauffée à l'aide d'un resurchauffeur fonctionnant à l'énergie héliothermique, et utilisation de la vapeur d'eau surchauffée

Publications (1)

Publication Number Publication Date
EP2609300A2 true EP2609300A2 (fr) 2013-07-03

Family

ID=44764134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11766961.4A Withdrawn EP2609300A2 (fr) 2010-09-30 2011-09-29 Dispositif et procédé pour produire une vapeur d'eau surchauffée

Country Status (7)

Country Link
US (1) US20130233301A1 (fr)
EP (1) EP2609300A2 (fr)
KR (1) KR20140004075A (fr)
CN (1) CN103429853A (fr)
DE (1) DE102010041734A1 (fr)
RU (1) RU2013119908A (fr)
WO (1) WO2012041980A2 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041989A1 (fr) * 2010-09-30 2012-04-05 Siemens Aktiengesellschaft Dispositif et procédé pour produire de la vapeur d'eau surchauffée au moyen d'énergie solaire sur la base du concept de circulation forcée avec guidage hélicoïdal de l'eau/la vapeur d'eau ainsi qu'utilisation de la vapeur d'eau surchauffée

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574303A (en) * 1968-09-30 1971-04-13 Westinghouse Electric Corp Moisture separator reheater for pressurized vapor
US3713278A (en) * 1968-11-18 1973-01-30 Gen Electric Combined moisture separator and reheater
DE2130244A1 (de) * 1971-06-18 1972-12-21 Babcock & Wilcox Ag Einrichtung zum Trocknen und UEberhitzen von Zwischendruckdampf durch Hochdruckdampf
US3887003A (en) * 1972-05-17 1975-06-03 Foster Wheeler Corp Bayonet tube heat exchanger
EP0128252B1 (fr) * 1983-06-13 1987-06-10 The Babcock & Wilcox Company Centrale nucléaire et appareil pour surchauffer la vapeur
DE3445609A1 (de) * 1984-12-14 1986-06-26 L. & C. Steinmüller GmbH, 5270 Gummersbach Vorrichtung zum trocknen von nassdampf und anschliessendem ueberhitzen des getrockneten dampfes
KR910002216B1 (ko) * 1985-03-29 1991-04-08 가부시끼가이샤 도시바 습분분리 재열장치
US4685511A (en) * 1985-10-08 1987-08-11 Westinghouse Electric Corp. Tube support for moisture separator reheater
DE4216278A1 (de) * 1992-05-16 1993-11-18 Erno Raumfahrttechnik Gmbh Dampferzeuger
US5526386A (en) * 1994-05-25 1996-06-11 Battelle Memorial Institute Method and apparatus for steam mixing a nuclear fueled electricity generation system
DE202008002599U1 (de) * 2008-02-25 2008-04-24 Flagsol Gmbh Solarthermisches Hybrid-Kraftwerk
EP2177757A1 (fr) * 2008-10-16 2010-04-21 Siemens Aktiengesellschaft Procédé et dispositif de surchauffe intermédiaire à l'aide de vapeur saturée pendant l'évaporation directe solaire dans une centrale thermique solaire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041989A1 (fr) * 2010-09-30 2012-04-05 Siemens Aktiengesellschaft Dispositif et procédé pour produire de la vapeur d'eau surchauffée au moyen d'énergie solaire sur la base du concept de circulation forcée avec guidage hélicoïdal de l'eau/la vapeur d'eau ainsi qu'utilisation de la vapeur d'eau surchauffée

Also Published As

Publication number Publication date
KR20140004075A (ko) 2014-01-10
WO2012041980A3 (fr) 2013-05-30
CN103429853A (zh) 2013-12-04
DE102010041734A1 (de) 2012-04-05
RU2013119908A (ru) 2014-11-10
US20130233301A1 (en) 2013-09-12
WO2012041980A2 (fr) 2012-04-05

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