WO2010149387A2 - Échangeur thermique destiné à produire de la vapeur pour une centrale thermique solaire - Google Patents

Échangeur thermique destiné à produire de la vapeur pour une centrale thermique solaire Download PDF

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Publication number
WO2010149387A2
WO2010149387A2 PCT/EP2010/003893 EP2010003893W WO2010149387A2 WO 2010149387 A2 WO2010149387 A2 WO 2010149387A2 EP 2010003893 W EP2010003893 W EP 2010003893W WO 2010149387 A2 WO2010149387 A2 WO 2010149387A2
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
side fluid
shell
fluid
jacket
Prior art date
Application number
PCT/EP2010/003893
Other languages
German (de)
English (en)
Other versions
WO2010149387A3 (fr
Inventor
Jörg Stahlhut
Wolfgang Hegner
Dirk Band
Original Assignee
Balcke-Dürr 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
Application filed by Balcke-Dürr GmbH filed Critical Balcke-Dürr GmbH
Priority to CN2010800283104A priority Critical patent/CN102483227A/zh
Priority to US13/379,731 priority patent/US20130118419A1/en
Priority to AU2010265019A priority patent/AU2010265019A1/en
Priority to KR1020127001057A priority patent/KR101399714B1/ko
Publication of WO2010149387A2 publication Critical patent/WO2010149387A2/fr
Publication of WO2010149387A3 publication Critical patent/WO2010149387A3/fr
Priority to ZA2011/09389A priority patent/ZA201109389B/en

Links

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 sunlight is bundled by means of parabolic mirror on the absorber tubes, so that the thermal oil located in the absorber tubes is heated to a temperature of about 400 0 C.
  • thermal energy is extracted from the thermal oil and transferred to water for the purpose of evaporation, so that the steam generated thereby in a connected steam power plant in a conventional manner drives a turbine for power production.
  • heat exchangers with U-tube bundles for steam generation are used, in which the separation of the vaporous water from the liquid phase takes place in a jacket region above the tube bundle, which is created by an extension of the cladding diameter.
  • 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 vapor stream for a solar thermal power plant comprises a jacket for receiving a shell-side fluid and tubes that run within 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 gradient during start-up and change load operation significantly increase, 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 portion of the tubes in such a way that the fluid inlet channel as a preheater and / or a flow straightener for the jacket-side fluid entering the jacket is trained.
  • 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 jacket-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 formed in the heat exchanger shell as a U-tube bundle.
  • 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 tubes can also run in a meandering bent. The dimension and arrangement of the tube bundle can be optimally designed according to the particular application.
  • the heat exchanger according to the invention on a steam drum, which is arranged above the heat exchanger and is coupled by riser and downpipes 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.
  • the steam drum has a fresh water inlet.
  • the water to be heated passes according to this embodiment via the fresh water inlet into the steam drum and on via the downpipes in the heat exchanger.
  • FIG. 2 is a front view of the first embodiment of FIG. 1;
  • Fig. 3 is a sectional view taken along the line A-A of Fig. 1;
  • Fig. 4 is a side view of a second embodiment of the invention.
  • Fig. 5 is a front view of the second embodiment of Fig. 4;
  • Fig. 6 is a sectional view taken along the line B-B of Fig. 4;
  • Fig. 7 is a side view of a third embodiment of the invention.
  • FIG. 8 is a front view of the third embodiment of FIG. 7.
  • 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 at a temperature of about 300 0 C and a pressure of about 16 bar via a collector 24 and via an oil outlet 22, the heat exchanger 1 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 0 C and a pressure of about 110 bar via the water inlet nozzle 12 or in the heat exchanger 1.
  • the cold water flows first into a fluid inlet channel 14.
  • the Fluids passage channel 14 angled box-shaped and has a rectangular opening 14 ', so that the water is forcibly guided after the entry in the direction of arrow 15 and only after passing through the opening 14' with already heated water or water-steam mixture comes into 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.
  • 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 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.
  • Figures 7 and 8 show a third embodiment of the invention.
  • this embodiment is similar to the first embodiment ( Figures 1-3).
  • the main difference is that the tubes 20 'are designed as a U-tube bundle.
  • the thermal oil enters the tubes 20 'via the lateral oil inlet connection 21 in the direction of arrow 25 via the tube 27, gives off heat to water and leaves the heat exchanger 1 in the direction of arrow 26 via the oil outlet connector 22.
  • the water to be evaporated occurs via the water inlet nozzle 12 into the heat exchanger jacket 10 and flows through the fluid inlet channel 14, wherein the position of the water inlet nozzle 12 and thus also of the fluid inlet channel 14 is changed in comparison to the first embodiment.
  • 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.

Abstract

L'invention concerne un échangeur thermique destiné à produire un flux de vapeur pour une centrale thermique solaire, comportant une gaine destinée à recevoir un fluide côté gaine et des tubes s'étendant à l'intérieur de la gaine, destinés à recevoir un fluide côté tubes, la chaleur étant transmise au moyen des tubes, du fluide côté tubes au fluide côté gaine. Le fluide côté gaine est de l'eau et le fluide côté tubes est une huile thermique ou du sel. L'invention permet d'augmenter les gradients de démarrage et les gradients de charge alternative de manière à améliorer la disponibilité de la centrale et la sécurité de fonctionnement.
PCT/EP2010/003893 2009-06-24 2010-06-24 Échangeur thermique destiné à produire de la vapeur pour une centrale thermique solaire WO2010149387A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
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
US13/379,731 US20130118419A1 (en) 2009-06-24 2010-06-24 Heat exchanger for steam generation for a solar thermal power plant
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
ZA2011/09389A ZA201109389B (en) 2009-06-24 2011-12-20 Heat exchanger for steam generation for a solar-thermal power plant

Applications Claiming Priority (2)

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
EP09008287.6 2009-06-24

Publications (2)

Publication Number Publication Date
WO2010149387A2 true WO2010149387A2 (fr) 2010-12-29
WO2010149387A3 WO2010149387A3 (fr) 2011-09-29

Family

ID=42668439

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/003893 WO2010149387A2 (fr) 2009-06-24 2010-06-24 Échangeur thermique destiné à produire de la 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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104713057A (zh) * 2013-12-17 2015-06-17 苟仲武 热泵电蒸汽锅炉

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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
WO2018156529A1 (fr) * 2017-02-23 2018-08-30 COMBINED POWER LLC, dba HYPERLIGHT ENERGY Systèmes et procédés de production d'énergie solaire et de refroidissement à sec
WO2020069704A1 (fr) 2018-10-01 2020-04-09 Aalborg Csp A/S Échangeur de chaleur, par exemple pour centrale solaire
CA3139844A1 (fr) * 2019-06-17 2020-12-24 Aalborg Csp A/S Echangeur thermique a faisceau de tuyaux
EP4030119A1 (fr) 2021-01-15 2022-07-20 Johnson Controls Denmark ApS Unité de traitement de réfrigérant, procédé d'évaporation d'un réfrigérant et utilisation d'une unité de traitement de réfrigérant

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Also Published As

Publication number Publication date
ZA201109389B (en) 2012-08-29
EP2278220A1 (fr) 2011-01-26
KR101399714B1 (ko) 2014-06-27
AU2010265019A2 (en) 2012-01-19
KR20120055536A (ko) 2012-05-31
ES2467667T3 (es) 2014-06-12
AU2010265019A1 (en) 2012-01-19
US20130118419A1 (en) 2013-05-16
WO2010149387A3 (fr) 2011-09-29
EP2278220B1 (fr) 2014-03-05
CN102483227A (zh) 2012-05-30

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