EP4083502B1 - Wärmerückgewinnungsdampferzeuger und dampfkraftwerk - Google Patents

Wärmerückgewinnungsdampferzeuger und dampfkraftwerk Download PDF

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Publication number
EP4083502B1
EP4083502B1 EP22170899.3A EP22170899A EP4083502B1 EP 4083502 B1 EP4083502 B1 EP 4083502B1 EP 22170899 A EP22170899 A EP 22170899A EP 4083502 B1 EP4083502 B1 EP 4083502B1
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EP
European Patent Office
Prior art keywords
steam
heat transfer
steam generator
transfer fluid
superheating
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.)
Active
Application number
EP22170899.3A
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English (en)
French (fr)
Other versions
EP4083502A1 (de
EP4083502C0 (de
Inventor
Guido VOLPI
Daniele CROCIATI
Vincenzo PANEBIANCO
Ruggiero DADDUZIO
Lorenzo BINI
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AC Boilers SpA
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AC Boilers SpA
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Publication of EP4083502B1 publication Critical patent/EP4083502B1/de
Publication of EP4083502C0 publication Critical patent/EP4083502C0/de
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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
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
    • F22G7/12—Steam superheaters characterised by location, arrangement, or disposition in flues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
    • F22G5/123—Water injection apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
    • F22G5/14—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays by live steam

Definitions

  • Thermal plants for generating steam normally comprise a recovery steam generator, which is connected to a source of hot flue-gases.
  • the source of hot flue-gases may be a gas turbine or an industrial plant.
  • the plant 1 is configured to produce electric energy and therefore the steam generated is used to generate electricity, as we shall see shortly in detail.
  • the superheating banks 27 are also referred to as re-superheating banks to emphasise the fact that they are supplied with steam which has been already superheated by the superheating banks 22 and coming from the steam turbine unit 3.
  • the first heat transfer fluid is steam and the second heat transfer fluid is water.
  • the inlet portion 35 is connected to a respective manifold pipe of the tube bundle (non-visible) defining the superheating bank 22 arranged upstream along the direction V, while the outlet portion 36 is connected to a respective manifold pipe of the tube bundle (non-visible) defining the superheating bank 22 arranged downstream along the direction V.
  • the injection pipe 30 of the first fluid substantially fits in the curved section 39 of the inlet portion 35, while the injection pipe 31 fits in the rectilinear section 41c of the intermediate portion 37.
  • control device 34 when the control device 34 deems it necessary to change the temperature or the flow rate of the steam circulating in the connecting pipes 25 (or also in the connecting pipes 29 according to the above-described variant), it adjusts the control valves 33a 33b so as to supply appropriate flow rates of the first fluid and, possibly, of the second fluid.
  • the same considerations made for the connecting pipes 25 may be applied to the connecting pipes 29. Therefore, if required, the control device 34 may adjust the supply of one or more heat transfer fluids in the connecting pipes 29 as well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Claims (14)

  1. Rückgewinnungsdampferzeuger (4), umfassend:
    eine Rauchgasströmungskammer (11), die sich entlang einer Längsachse (A) erstreckt und mit einem Einlass (16) und einem Auslass (17) versehen ist;
    einen Dampfkreislauf (14), dem Wasser zugeführt wird und der sich mindestens teilweise in der Rauchgasströmungskammer (11) erstreckt, um die Wärme der Rauchgase zur Erzeugung von Dampf zu nutzen; wobei der Dampfkreislauf (14) Folgendes umfasst:
    - einen Überhitzungsabschnitt (20), umfassend mindestens zwei in Reihe zueinander angeordnete Überhitzungsbänke (22; 27);
    - eine Vielzahl von Verbindungsleitungen (25, 29), die so konfiguriert sind, dass sie die mindestens zwei Überhitzungsbänke (22; 27) in Reihe miteinander verbinden;
    - mindestens eine Vielzahl von ersten Einspritzleitungen (30; 31), die so konfiguriert sind, dass sie ein erstes Wärmeübertragungsfluid in jede der Verbindungsleitungen (25; 25, 29) einspritzen;
    - eine Steuervorrichtung (34), die so konfiguriert ist, dass sie den Förderstrom des über die ersten Einspritzleitungen (30; 31) zugeführten ersten Wärmeübertragungsfluids regelt;
    wobei der Rückgewinnungsdampferzeuger (4) dadurch gekennzeichnet ist, dass die ersten Einspritzleitungen (30) mit einem ersten Verteiler (32a) verbunden sind, der mit einem ersten Ventil (33a) versehen ist, und dadurch, dass die Steuervorrichtung (34) so konfiguriert ist, dass sie das erste Ventil (33a) einstellt, um den Förderstrom des ersten Wärmeübertragungsfluids zu steuern, das dem ersten Verteiler (32a) zugeführt wird.
  2. Dampferzeuger nach Anspruch 1, wobei das erste Wärmeübertragungsfluid Wasser ist.
  3. Dampferzeuger nach Anspruch 2, wobei der Dampfkreislauf (14) einen Verdampfungsabschnitt (19) umfasst, der stromaufwärts des Überhitzungsabschnitts (20) angeordnet ist; wobei die ersten Einspritzleitungen (31) so konfiguriert sind, dass sie stromaufwärts des Verdampfungsabschnitts (19) Wasser ziehen.
  4. Dampferzeuger nach Anspruch 3, wobei der Dampfkreislauf (14) einen stromaufwärts des Verdampfungsabschnitts (19) angeordneten Economiser-Abschnitt (21) umfasst; wobei die ersten Einspritzleitungen (31) so konfiguriert sind, dass sie Wasser aus dem Economiser-Abschnitt (21) ziehen.
  5. Dampferzeuger nach Anspruch 1, wobei das erste Wärmeübertragungsfluid Dampf ist.
  6. Dampferzeuger nach Anspruch 5, wobei die ersten Einspritzleitungen (30) so konfiguriert sind, dass sie stromaufwärts der Überhitzungsbänke (22; 29) Dampf ziehen.
  7. Dampferzeuger nach Anspruch 5 oder 6, wobei der Dampfkreislauf einen Verdampfungsabschnitt (19) umfasst, der stromaufwärts des Überhitzungsabschnitts (20) angeordnet ist; wobei die ersten Einspritzleitungen (30) so konfiguriert sind, dass sie Dampf aus dem Verdampfungsabschnitt (19) oder von einem Punkt zwischen dem Verdampfungsabschnitt (19) und dem Überhitzungsabschnitt (20) ziehen.
  8. Dampferzeuger nach Anspruch 1, wobei das erste Wärmeübertragungsfluid Kohlendioxid ist.
  9. Dampferzeuger nach Anspruch 1, wobei der Dampfkreislauf (14) mindestens eine Vielzahl von zweiten Einspritzleitungen (31; 30) umfasst, die so konfiguriert sind, dass sie ein zweites Wärmeübertragungsfluid in jede der Verbindungsleitungen (25; 25, 29) einspritzen; wobei sich das zweite Wärmeübertragungsfluid von dem ersten Wärmeübertragungsfluid unterscheidet; wobei die Steuervorrichtung (34) so konfiguriert ist, dass sie auch den Förderstrom des zweiten Wärmeübertragungsfluids, das über die zweiten Einspritzleitungen (31; 30) zugeführt wird, reguliert.
  10. Dampferzeuger nach Anspruch 9, wobei das erste Wärmeübertragungsfluid Dampf und das zweite Wärmeübertragungsfluid Wasser ist.
  11. Dampferzeuger nach Anspruch 10, wobei der Dampfkreislauf (14) einen Verdampfungsabschnitt (19) umfasst, der stromaufwärts des Überhitzungsabschnitts (20) angeordnet ist; wobei die ersten Einspritzleitungen (30) so konfiguriert sind, dass sie stromaufwärts der Überhitzungsbänke (22; 29) Dampf ziehen, und die zweiten Einspritzleitungen (31) so konfiguriert sind, dass sie stromaufwärts des Verdampfungsabschnitts (19) Wasser ziehen.
  12. Dampferzeuger nach Anspruch 11, wobei jede erste Einspritzleitung (30) mit der jeweiligen Verbindungsleitung (25; 25, 29) gekoppelt und mit einer jeweiligen Auslassdüse (55) versehen ist, die so konfiguriert ist, dass sie das erste Wärmeübertragungsfluid im Wesentlichen in einem zentralen Abschnitt innerhalb der jeweiligen Verbindungsleitung (25; 25, 29) auslässt.
  13. Dampferzeuger nach einem der Ansprüche 9 bis 12, wobei die zweiten Einspritzleitungen (31) mit einem zweiten Verteiler (32b) verbunden sind, der mit einem zweiten Ventil (33b) versehen ist, wobei die Steuervorrichtung (34) so konfiguriert ist, dass sie das zweite Ventil (33b) einstellt, um den Förderstrom des zweiten Wärmeübertragungsfluids zu steuern, das dem zweiten Verteiler (32b) zugeführt wird.
  14. Thermische Dampferzeugungsanlage, umfassen mindestens einen Rückgewinnungsdampferzeuger (4) nach einem der vorstehenden Ansprüche.
EP22170899.3A 2021-04-29 2022-04-29 Wärmerückgewinnungsdampferzeuger und dampfkraftwerk Active EP4083502B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000010919A IT202100010919A1 (it) 2021-04-29 2021-04-29 Generatore di vapore a recupero e impianto comprendente detto generatore di vapore a recupero

Publications (3)

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EP4083502A1 EP4083502A1 (de) 2022-11-02
EP4083502B1 true EP4083502B1 (de) 2025-04-16
EP4083502C0 EP4083502C0 (de) 2025-04-16

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050274113A1 (en) * 2004-06-11 2005-12-15 Takaaki Sekiai Steam temperature control system, method of controlling steam temperature and power plant using the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4929010B2 (ja) * 2007-03-30 2012-05-09 東京電力株式会社 発電システム
US8104283B2 (en) * 2007-06-07 2012-01-31 Emerson Process Management Power & Water Solutions, Inc. Steam temperature control in a boiler system using reheater variables
WO2008152205A1 (en) * 2007-06-15 2008-12-18 Åf-Consult Oy Combustion plant and method for the combustion
EP2363577A1 (de) * 2010-02-24 2011-09-07 Alstom Technology Ltd Dampfturbinenanlage
US9188028B2 (en) * 2012-10-05 2015-11-17 General Electric Company Gas turbine system with reheat spray control
WO2015082364A1 (en) * 2013-12-02 2015-06-11 Alstom Technology Ltd Combined cycle system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050274113A1 (en) * 2004-06-11 2005-12-15 Takaaki Sekiai Steam temperature control system, method of controlling steam temperature and power plant using the same

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IT202100010919A1 (it) 2022-10-29
EP4083502C0 (de) 2025-04-16

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