WO2006123388B1 - Scheme of power enhancement for combined cycle plants through steam injection - Google Patents

Scheme of power enhancement for combined cycle plants through steam injection

Info

Publication number
WO2006123388B1
WO2006123388B1 PCT/IT2006/000332 IT2006000332W WO2006123388B1 WO 2006123388 B1 WO2006123388 B1 WO 2006123388B1 IT 2006000332 W IT2006000332 W IT 2006000332W WO 2006123388 B1 WO2006123388 B1 WO 2006123388B1
Authority
WO
WIPO (PCT)
Prior art keywords
plant
combined cycle
power
gas turbine
steam
Prior art date
Application number
PCT/IT2006/000332
Other languages
French (fr)
Other versions
WO2006123388A2 (en
WO2006123388A3 (en
Inventor
Roberto Carapellucci
Adriano Milazzo
Original Assignee
Roberto Carapellucci
Adriano Milazzo
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 Roberto Carapellucci, Adriano Milazzo filed Critical Roberto Carapellucci
Priority to US11/920,631 priority Critical patent/US20090044534A1/en
Priority to EP06745335A priority patent/EP1888882A2/en
Publication of WO2006123388A2 publication Critical patent/WO2006123388A2/en
Publication of WO2006123388A3 publication Critical patent/WO2006123388A3/en
Publication of WO2006123388B1 publication Critical patent/WO2006123388B1/en

Links

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
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
    • F01K21/047—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas having at least one combustion gas turbine
    • 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
    • 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
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

Landscapes

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

Abstract

A combined cycle power plant has his power output augmented by addition of a gas turbine (GTl) with a dedicated heat recovery steam generator (HRSGl) . Steam produced by said heat recovery generator (HRSGl) is injected in the combustion chamber of the combined cycle plant . In this way the combined cycle plant power is augmented by the power of the additional gas turbine plus two further contributions due to steam injection. The first contribution is given by the increased flow rate through the gas turbine (GT) of the combined cycle plant. The- second contribution is given by the said increased flow rate flowing also through the heat recovery steam generator (HRSG) of the combined cycle plant, hence increasing the thermal power available herein and causing an increased power output at the steam turbine (ST) . With said method a significant power increase can be obtained by a given combined cycle plant, with good energy conversion efficiency and excellent load following capability, thus allowing a complete and effective exploitation of sites devoted to power production.

Claims

AMENDED CLAIMS received by the International Bureau on 9 May 2007 (09.05.07)Vy hat is claimed is:
1. A method for increasing the power of a combined cycle power plant, i.e. a power plant containing at least a gas turbine plant GT, at least a heat recovery steam generator HRSG and at least a steam turbine plant ST. Said method, departs from the prior art since it comprises: a. the addition to said combined cycle plant of a gas turbine GT1 delivering a first power contribution to the load U1; b. the addition of a heat recovery steam generator HRSG1 fed by the exhaust energy delivered by the gas turbine GT1; c. the injection of the steam produced by the generator HRSG1 in the combustion chamber or at the compressor discharge of the gas turbine GT of the base plant. This steam, injection increases the power delivered by the gas turbine GT to its load U; d. an increased flow rate through the heal recovery steam generator HRSG of the base plant, due to said steam injection, and consequently an increased power delivered by the steam turbine ST of the base plant to its load U.
2. A method for integration of a gas turbine and a combined cycle plant, either existing or in commissioning or in design phase, in which method the exhaust energy of said gas turbine is used to produce steam for subsequent injection within the gas turbine group of said combined cycle plant, as described in claim 1, and said integration allows the achievement of a global power exceeding the sum of those delivered by the two plants that are integrated, while the energy efficiency of the integrated plant is close to that of the combined cycle and significantly higher than that of the gas turbine in stand alone configuration.
PCT/IT2006/000332 2005-05-19 2006-05-09 Scheme of power enhancement for combined cycle plants through steam injection WO2006123388A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/920,631 US20090044534A1 (en) 2005-05-19 2006-05-09 Scheme of power enhancement for combined cycle plants through steam injection
EP06745335A EP1888882A2 (en) 2005-05-19 2006-05-09 Scheme of power enhancement for combined cycle plants through steam injection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITAQ2005A000007 2005-05-19
IT000007A ITAQ20050007A1 (en) 2005-05-19 2005-05-19 METHOD OF ENHANCEMENT WITH STEAM INJECTION FOR COMBINED CYCLE SYSTEMS

Publications (3)

Publication Number Publication Date
WO2006123388A2 WO2006123388A2 (en) 2006-11-23
WO2006123388A3 WO2006123388A3 (en) 2007-05-03
WO2006123388B1 true WO2006123388B1 (en) 2007-06-28

Family

ID=37262508

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000332 WO2006123388A2 (en) 2005-05-19 2006-05-09 Scheme of power enhancement for combined cycle plants through steam injection

Country Status (4)

Country Link
US (1) US20090044534A1 (en)
EP (1) EP1888882A2 (en)
IT (1) ITAQ20050007A1 (en)
WO (1) WO2006123388A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033116B2 (en) 2008-05-06 2011-10-11 General Electric Company Turbomachine and a method for enhancing power efficiency in a turbomachine
EP2568127B1 (en) * 2011-09-07 2015-02-25 Alstom Technology Ltd Method for operating a power plant
US9322333B2 (en) * 2012-01-06 2016-04-26 General Electric Company System and method for determining a cooling flow parameter downstream from a gas turbine combustor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879616A (en) * 1973-09-17 1975-04-22 Gen Electric Combined steam turbine and gas turbine power plant control system
US4949544A (en) * 1988-12-06 1990-08-21 General Electric Company Series intercooler
WO1996007019A2 (en) * 1994-08-31 1996-03-07 Westinghouse Electric Corporation A method of burning hydrogen in a gas turbine power plant
JP3196549B2 (en) * 1995-01-09 2001-08-06 株式会社日立製作所 Power generation system with fuel reformer
DE69634019T2 (en) * 1995-09-22 2005-11-03 Kabushiki Kaisha Toshiba Power plant with combined cycle
DE19615911A1 (en) * 1996-04-22 1997-10-23 Asea Brown Boveri Method for operating a combination system

Also Published As

Publication number Publication date
EP1888882A2 (en) 2008-02-20
WO2006123388A2 (en) 2006-11-23
WO2006123388A3 (en) 2007-05-03
US20090044534A1 (en) 2009-02-19
ITAQ20050007A1 (en) 2006-11-20

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