EP2278220B1 - Echangeur thermique destiné à la production de vapeur pour une centrale thermique solaire - Google Patents

Echangeur thermique destiné à la production de vapeur pour une centrale thermique solaire Download PDF

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Publication number
EP2278220B1
EP2278220B1 EP09008287.6A EP09008287A EP2278220B1 EP 2278220 B1 EP2278220 B1 EP 2278220B1 EP 09008287 A EP09008287 A EP 09008287A EP 2278220 B1 EP2278220 B1 EP 2278220B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
pipes
water
fluid
steam
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.)
Not-in-force
Application number
EP09008287.6A
Other languages
German (de)
English (en)
Other versions
EP2278220A1 (fr
Inventor
Jörg Dipl.-Ing. Stahlhut
Wolfgang Dr. Hegner
Dirk Band
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.)
Balcke Duerr GmbH
Original Assignee
Balcke Duerr GmbH
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
Priority to ES09008287.6T priority Critical patent/ES2467667T3/es
Application filed by Balcke Duerr GmbH filed Critical Balcke Duerr GmbH
Priority to EP09008287.6A priority patent/EP2278220B1/fr
Priority to AU2010265019A priority patent/AU2010265019A1/en
Priority to PCT/EP2010/003893 priority patent/WO2010149387A2/fr
Priority to CN2010800283104A priority patent/CN102483227A/zh
Priority to KR1020127001057A priority patent/KR101399714B1/ko
Priority to US13/379,731 priority patent/US20130118419A1/en
Publication of EP2278220A1 publication Critical patent/EP2278220A1/fr
Priority to ZA2011/09389A priority patent/ZA201109389B/en
Application granted granted Critical
Publication of EP2278220B1 publication Critical patent/EP2278220B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
    • 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
    • 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
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • 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
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/021—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers with heating tubes in which flows a non-specified heating fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B15/00—Water-tube boilers of horizontal type, i.e. the water-tube sets being arranged horizontally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
    • F22B3/02—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass involving the use of working media other than 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
    • F22B37/26—Steam-separating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B5/00—Steam boilers of drum type, i.e. without internal furnace or fire tubes, the boiler body being contacted externally by flue gas
    • 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
    • F22D1/16—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways
    • F22D1/20—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and directly connected to boilers

Definitions

  • the invention relates to a heat exchanger for generating a steam flow for a solar thermal power plant.
  • the invention is therefore based on the object to provide a heat exchanger for generating steam for a solar thermal power plant, which reduces or overcomes the disadvantages mentioned in the prior art.
  • the heat exchanger according to the invention for generating a steam flow for a solar thermal power plant comprises a jacket for receiving a shell-side fluid and tubes which run inside the shell, for a tube-side fluid. The heat is transferred via the tubes from the tube side fluid to the shell side fluid, wherein the tube side fluid is a thermal oil or salt and the shell side fluid is water.
  • the diameter of the shell can be significantly reduced.
  • the use of collectors instead of pipe washers reduces the mechanically required wall thickness even further.
  • the maximum allowable temperature gradients during start-up and alternating load operation can be significantly increased, resulting in greater thermal resilience and availability of the power plant.
  • the increased thermal elasticity also increases operational safety, as the risk of material fatigue and thermal cracking is significantly reduced.
  • the heat exchanger comprises a fluid inlet channel, which adjoins an inlet opening for the shell-side fluid and surrounds at least a part of the tubes in such a way that the fluid inlet channel is designed as a preheater path and / or a flow straightener for the shell-side fluid entering the jacket.
  • the cold water entering the heat exchanger jacket first passes through this fluid inlet channel before it mixes with the already heated water or water-steam mixture in the heat exchanger.
  • an integrated Vortageux is formed in some ways, which proves to be thermodynamically and fluidically favorable.
  • the fluid inlet channel serves as a flow straightener.
  • the fluid inlet channel surrounds about 1/8 of the surfaces of the tubes.
  • the fluid inlet channel is preferably box-shaped and encloses a part of the heat-emitting tube surfaces.
  • the fluid inlet channel can also be designed cylindrical.
  • the ratio of the tube surface enclosed by the fluid inlet channel to the entire tube surface in the heat exchanger is 1/8. Depending on the application, this value can be adjusted.
  • the heat exchanger comprises a fluid outlet channel, which is arranged in the region of an outlet opening for the shell-side fluid in such a way that the fluid outlet channel is formed as a flow straightener and / or water separator for the shell-side fluid emerging from the jacket. This provides for a directed flow of the exiting the heat exchanger steam.
  • the fluid outlet channel may comprise elements which serve a better water or droplet deposition.
  • the tubes are designed as a horizontal meander tube bundle. As a result, a large surface for heat transfer or steam generation and the longest possible residence time of the heat-emitting thermal oil in the heat exchanger is provided in a compact manner.
  • the dimension and arrangement of the tube bundle can be optimally designed according to the particular application.
  • the heat exchanger according to the invention has a steam drum, which is arranged above the heat exchanger and is coupled by riser and downcomers to the heat exchanger.
  • the steam formed in the heat exchanger passes through risers to the steam drum, from which it is removed for further use or overheating.
  • the condensate can be removed from the steam drum and returned to the heat exchanger.
  • the arrangement of the steam drum above the heat exchanger allows a natural circulation. Depending on the application, a forced circulation by means of a pump can be considered.
  • FIGS. 1 to 3 show a first embodiment of the heat exchanger according to the invention 1.
  • the horizontally mounted here heat exchanger 1 comprises a jacket 10 for receiving a shell-side fluid, water, and is constructed on a support structure 11. Within the shell 10 tubes 20 are arranged, the axes of symmetry are shown by dashed lines. This is a tube bundle with meandering curved tubes 20.
  • the hot, heat-emitting fluid, thermal oil occurs at a temperature of about 400 ° C and a pressure of about 20 bar via the oil inlet port 21 into the heat exchanger 1 and is a distributor 23 guided in the individual tubes 20 of the tube bundle.
  • the thermal oil leaves the heat exchanger 1 at a temperature of about 300 ° C. and a pressure of about 16 bar via a collector 24 and via an oil outlet 22 and is again the absorber tubes of the parabolic trough collectors (not shown ).
  • the water to be heated occurs at a temperature of about 300 ° C and a pressure of about 110 bar via the water inlet 12 or into the heat exchanger 1.
  • the cold water flows first into a fluid inlet channel 14.
  • the fluid inlet channel 14 is angled constructed box-shaped and has a rectangular opening 14 ', so that the water is force-fed after entering in the direction of arrow 15 and only after passing through the opening 14' with already heated water or water-steam mixture in contact.
  • the fluid inlet channel 14 thus serves to guide the flow and preheat the cold water.
  • the fluid inlet channel 14 includes a portion of the heat-emitting thermal oil-carrying tubes 20, so that it comes within the channel 14 to a forced convection. It has been found that the ratio of the surface of the tubes 20 enclosed by the fluid inlet channel 14 to the total surface area of the tubes 20 located in the heat exchanger 1 is ideally about 1/8.
  • the heat transfer from the thermal oil to the water steam is formed in the heat exchanger 1, so that there is a mixture of water and steam, due to the density difference of the water vapor formed in the direction of the steam drum 30 rises and water is mainly in the bottom region of the heat exchanger 1 , Via the openings 32, which are preferably in the vertical upper region of the heat exchanger 1, the steam passes into the risers 31 and further into the steam drum 30. From there, the steam is removed via the connection 35 and used further.
  • another heat exchanger (not shown) is connected for overheating of the steam.
  • the condensate located in the steam drum 30 is returned to the heat exchanger 1.
  • the steam taken out of the steam drum 30 has on average a temperature of about 380 ° C. and a pressure of about 108 bar.
  • FIGS. 4 to 6 show a second embodiment of the invention.
  • the heat exchanger 1 does not have a separate water inlet connection. Instead, the heat exchanger 1 is supplied via the downpipes 33 and the openings 34 with fresh water.
  • the steam drum 30 has a fresh water inlet 36.
  • the production costs can be reduced, since no separate water supply is required. It can also be dispensed with a fluid inlet channel 14, since the preheating of the cold water is already done in a separate preheater.
  • FIGS. 7 and 8 show a third embodiment of the invention.
  • this embodiment of the first embodiment ( Fig. 1-3 ) similar.
  • the tubes 20 ' are designed as a U-tube bundle.
  • the thermal oil enters via the side oil inlet port 21 in the direction of arrow 25 through the pipe 27 into the tubes 20 ', gives off heat to water and leaves the heat exchanger 1 in the direction of arrow 26 via the ⁇ lauslassstutzen 22.
  • the fluid inlet channel 14 is positioned in the region of the exit of the thermal oil.
  • Temperatures and pressures of the fluids in the heat exchanger may vary depending on the power plant location or size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Claims (6)

  1. Echangeur de chaleur avec une enveloppe (10) contenant de l'eau pour la production d'un flux de vapeur, dans lequel, à l'intérieur de l'enveloppe (10) sont disposés des faisceaux horizontaux de canalisations (20) pour un fluide à l'intérieur des canalisations, la chaleur étant transmise via les canalisations (20), du fluide à l'intérieur des canalisations à l'eau; dans lequel un conduit (14) d'entrée de fluide est prévu, qui est raccordé à une ouverture (12) d'entrée pour l'eau et qui entoure au moins une partie des canalisations (20) d'une façon telle que le conduit (14) d'entrée de fluide soit configuré comme un préchauffer pour l'eau pénétrant dans l'enveloppe (10),
    caractérisé en ce que
    un collecteur de vapeur séparé (30) est disposé au-dessus de l'échangeur de chaleur (1) pour la séparation de la vapeur d'eau d'avec la phase liquide et est couplé, au moyen de conduites (31, 33) ascendantes et descendantes, à l'échangeur de chaleur (1) de telle façon qu'une circulation naturelle se produise; dans lequel les canalisations (20) sont configurées comme un faisceau de canalisations horizontal à méandres; en ce que les canalisations (20) comprennent, côté entrée, un distributeur (23) par l'intermédiaire duquel le fluide fournisseur de chaleur est dirigé dans les canalisations individuelles (20) et, côté sortie, les canalisations (20) sont raccordées à un collecteur (24); en ce que le conduit (14) d'entrée de fluide pour l'eau, le distributeur (23) et le collecteur (24) sont entièrement disposés à l'intérieur de l'enveloppe (10); et en ce que le fluide à l'intérieur des canalisations est une huile thermique ou un sel.
  2. Echangeur de chaleur selon la revendication 1,
    caractérisé en ce que
    le faisceau de canalisations à méandres est configuré comme un faisceau de canalisations à trois voies, dans lequel une première voie est disposée, depuis le faisceau de canalisations (20), raccordée au distributeur (23), une deuxième voie, depuis le faisceau de canalisations (20), située au-dessous, et une troisième voie, depuis le faisceau de canalisations (20), raccordée au collecteur (24).
  3. Echangeur de chaleur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le conduit (14) d'entrée de fluide est configuré comme un orienteur d'écoulement pour l'eau pénétrant dans l'enveloppe (10).
  4. Echangeur de chaleur selon la revendication 1 ou 2,
    caractérisé en ce que
    le conduit (14) d'entrée de fluide entoure approximativement 1/8ème des surfaces des canalisations.
  5. Echangeur de chaleur selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    il comprend un conduit de sortie du fluide qui est configuré comme un orienteur d'écoulement et/ou un séparateur d'eau pour l'eau ressortant de l'enveloppe (10).
  6. Echangeur de chaleur selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le collecteur de vapeur (30) possède une entrée d'eau douce.
EP09008287.6A 2009-06-24 2009-06-24 Echangeur thermique destiné à la production de vapeur pour une centrale thermique solaire Not-in-force EP2278220B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP09008287.6A EP2278220B1 (fr) 2009-06-24 2009-06-24 Echangeur thermique destiné à la production de vapeur pour une centrale thermique solaire
ES09008287.6T ES2467667T3 (es) 2009-06-24 2009-06-24 Intercambiador de calor para la generación de vapor para una central térmica solar
PCT/EP2010/003893 WO2010149387A2 (fr) 2009-06-24 2010-06-24 Échangeur thermique destiné à produire de la vapeur pour une centrale thermique solaire
CN2010800283104A CN102483227A (zh) 2009-06-24 2010-06-24 为太阳能热电厂生成蒸汽的热交换器
AU2010265019A AU2010265019A1 (en) 2009-06-24 2010-06-24 Heat exchanger for steam generation for a solar-thermal power plant
KR1020127001057A KR101399714B1 (ko) 2009-06-24 2010-06-24 태양-열 발전기용 증기 생성을 위한 열 교환기
US13/379,731 US20130118419A1 (en) 2009-06-24 2010-06-24 Heat exchanger for steam generation for a solar thermal power plant
ZA2011/09389A ZA201109389B (en) 2009-06-24 2011-12-20 Heat exchanger for steam generation for a solar-thermal power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09008287.6A EP2278220B1 (fr) 2009-06-24 2009-06-24 Echangeur thermique destiné à la production de vapeur pour une centrale thermique solaire

Publications (2)

Publication Number Publication Date
EP2278220A1 EP2278220A1 (fr) 2011-01-26
EP2278220B1 true EP2278220B1 (fr) 2014-03-05

Family

ID=42668439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09008287.6A Not-in-force EP2278220B1 (fr) 2009-06-24 2009-06-24 Echangeur thermique destiné à la production de vapeur pour une centrale thermique solaire

Country Status (8)

Country Link
US (1) US20130118419A1 (fr)
EP (1) EP2278220B1 (fr)
KR (1) KR101399714B1 (fr)
CN (1) CN102483227A (fr)
AU (1) AU2010265019A1 (fr)
ES (1) ES2467667T3 (fr)
WO (1) WO2010149387A2 (fr)
ZA (1) ZA201109389B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020253924A1 (fr) 2019-06-17 2020-12-24 Aalborg Csp A/S Échangeur thermique à faisceau de tuyaux
US11739931B2 (en) 2018-10-01 2023-08-29 Header-coil Company A/S Heat exchanger, such as for a solar power plant

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CN104713057A (zh) * 2013-12-17 2015-06-17 苟仲武 热泵电蒸汽锅炉
RU2546934C1 (ru) * 2014-03-19 2015-04-10 Акционерное общество "Опытное Конструкторское Бюро Машиностроения имени И.И. Африкантова" (АО "ОКБМ Африкантов") Горизонтальный парогенератор
RU2570992C1 (ru) * 2014-12-12 2015-12-20 Открытое акционерное общество "Ордена Трудового Красного Знамени и ордена труда ЧССР опытное конструкторское бюро "ГИДРОПРЕСС" (ОАО ОКБ "ГИДРОПРЕСС") Горизонтальный парогенератор атомной электростанции и способ его сборки
RU2583321C1 (ru) * 2014-12-12 2016-05-10 Открытое акционерное общество "Ордена Трудового Красного Знамени и ордена труда ЧССР опытное конструкторское бюро "ГИДРОПРЕСС" (ОАО ОКБ "ГИДРОПРЕСС") Парогенератор с горизонтальным пучком теплообменных труб и способ его сборки
PL3267100T3 (pl) * 2016-07-08 2021-10-25 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Urządzenie wytwarzające parę
US20200232447A1 (en) * 2017-02-23 2020-07-23 COMBINED POWER LLC, dba HYPERLIGHT ENERGY Systems and methods of generating solar energy and dry cooling
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11739931B2 (en) 2018-10-01 2023-08-29 Header-coil Company A/S Heat exchanger, such as for a solar power plant
WO2020253924A1 (fr) 2019-06-17 2020-12-24 Aalborg Csp A/S Échangeur thermique à faisceau de tuyaux

Also Published As

Publication number Publication date
US20130118419A1 (en) 2013-05-16
EP2278220A1 (fr) 2011-01-26
AU2010265019A1 (en) 2012-01-19
AU2010265019A2 (en) 2012-01-19
CN102483227A (zh) 2012-05-30
KR20120055536A (ko) 2012-05-31
ZA201109389B (en) 2012-08-29
KR101399714B1 (ko) 2014-06-27
ES2467667T3 (es) 2014-06-12
WO2010149387A2 (fr) 2010-12-29
WO2010149387A3 (fr) 2011-09-29

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