WO1999028608A1 - Prechauffage de l'air d'admission pour installations de turbine a gaz - Google Patents

Prechauffage de l'air d'admission pour installations de turbine a gaz Download PDF

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Publication number
WO1999028608A1
WO1999028608A1 PCT/DE1998/003478 DE9803478W WO9928608A1 WO 1999028608 A1 WO1999028608 A1 WO 1999028608A1 DE 9803478 W DE9803478 W DE 9803478W WO 9928608 A1 WO9928608 A1 WO 9928608A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas turbine
air
gas
turbine system
steam
Prior art date
Application number
PCT/DE1998/003478
Other languages
German (de)
English (en)
Inventor
Martin Krill
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1999028608A1 publication Critical patent/WO1999028608A1/fr

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
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/047—Heating to prevent icing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/08—Heating air supply before combustion, e.g. by exhaust gases

Definitions

  • the invention relates to a gas turbine system in which intake air can be fed to the combustion chamber of a gas turbine. It further relates to a method for operating such a system. Furthermore, it relates to a gas and steam turbine system, which comprises a gas turbine system of the type mentioned above.
  • a gas turbine system is usually used to generate electrical energy.
  • the energy content of a fuel is used to generate a rotational movement of a turbine shaft, which in turn drives a generator or a work machine.
  • ambient air is usually sucked in and compressed to a high pressure in a valve assigned to the gas turbine.
  • Most of the compressed air enters one or more combustion chambers and is mixed there with the fuel, usually gas. Waste heat generated during operation of the gas turbine plant is usually dissipated into the environment.
  • a gas turbine system for example, a gas turbine system is known in which the air to be supplied to the combustion chamber is preheated by an air heater operated with hot exhaust gases.
  • DE 37 02 654 AI a gas and steam turbine plant is known, in which to directly preheat the intake air of the compressor unit, these hot exhaust gases are admixed from the boiler.
  • DE 41 37 946 AI in turn calls the use of steam emerging from a steam generator for preheating the combustion air which is fed to the combustion chamber.
  • the invention has for its object to provide a gas turbine system of the type mentioned above, which has a particularly high system efficiency.
  • a method for operating such a gas turbine system is to be specified, with which a particularly high system efficiency can be achieved.
  • intake air to be supplied to the compressor of a gas turbine can be preheated via heated exhaust air from an air-cooled generator, an exhaust air line of the air-cooled generator being divided into a first shut-off partial exhaust air line and a second shut-off partial exhaust air line branches, the first partial exhaust line opening into an intake air line upstream of the compressor of the gas turbine system.
  • the invention is based on the consideration that a particularly high -rue: i ⁇ iij> -.- '. Should be made available in the plant process waste heat to the maximum extent ⁇ "-k ngsgrad This should include the waste heat in the various Buildings of the gas turbine plant are produced, at least partially returned to the plant process, in which case it proves to be particularly advantageous if waste heat from an air-cooled generator reaches the intake house of the gas turbine in order to heat the air to be drawn in by the gas turbine.
  • the preheating of the intake air of the gas turbine By preheating the intake air of the gas turbine, the total mass flow of fuel-air mixture that can be supplied to the gas turbine per unit of time is reduced, so that the maximum output that can be achieved by the gas turbine is less than if the intake air is not preheated.
  • the preheating of the intake air causes the fuel consumption to drop more than the maximum achievable power output, so that the overall The efficiency of the system increases in this so-called partial load operation.
  • the gas turbine plant is particularly suitable for use in a gas and Dd.iLijjl ⁇ . j-iifci-.i dge gecigutL.
  • D ⁇ _j-- - ⁇ ⁇ ⁇ * ⁇ orte ⁇ lhafter- example be supplied to the compressor of the gas turbine intake air over m accumulating the Dampfturbmenstrom heated air from ⁇ a generator of Dampfturbmenstrom entnen bar. Because this use of waste heat enables a particularly high system efficiency of the gas and steam turbine plant in partial load operation by using the waste heat of the generator.
  • the waste heat of the generator ...-- Lc OiiJe-L ⁇ can be used in a cost-effective manner to provide a quick power reserve. This may also be necessary, for example, in the shortest response time to support the network frequencies in the power network fed by the gas and steam turbine system.
  • the waste heat generated by the Gerantor is only dissipated to the environment. This prevents preheating of the intake air for the gas turbine. This leads to a rapid increase in the maximum power delivered by the gas turbine.
  • the steam turbine system can be designed such that the heated exhaust air is only used in certain operating modes.
  • an exhaust air line advantageously has a branching into a first shut-off partial exhaust air line and into a second shut-off partial exhaust air line.
  • the first partial exhaust air line opens into an intake air line upstream of the compressor of the gas turbine system.
  • the stated object is achieved by preheating intake air to be supplied to the compressor of a gas turbine via heated exhaust air from an air-cooled generator.
  • this heat is used by the transfer of waste heat to the intake air for the gas turbine for the plant process of a gas uuibinenäniage ai -rj-. This also applies if this form of waste heat utilization is transferred to a gas and steam turbine plant.
  • the gas turbine system or the gas and steam turbine system thus has a particularly high system efficiency. Due to the comparatively slightly reduced maximum power output of the gas turbine, the efficiency is more favorable
  • such a gas turbine system or gas and steam turbine system also has comparatively lower pollutant emissions.
  • the so-called switchover point is relevant for the pollutant emissions of a gas turbine installation or a gas and steam turbine installation, which indicates the output at which the gas turbine is to be switched from diffusion operation to pre-operation.
  • the gas turbine system or the gas and steam turbine system with preheated intake air for the The gas turbine has a comparatively lower switchover point, so that it can be operated even in the case of comparatively low load conditions in the premix mode which is more favorable for low pollutant emissions.
  • FIG. 1 An embodiment of the invention is explained in more detail with reference to a drawing.
  • the figure schematically shows a gas turbine system which is integrated in a gas and steam turbine system.
  • the gas and steam turbine system 2 shown schematically in the figure comprises a gas turbine system 2a and a steam turbine system 2b.
  • the gas turbine plant 2a comprises a gas turbine 4 with a coupled air compressor 6.
  • the air compressor 6 is connected on the inlet side to an intake air line 8.
  • a gas chamber 4 is connected upstream of a combustion chamber 10, which is connected to a fresh air line 12 of the air compressor 6.
  • a fuel storage unit 14 opens into the combustion chamber 10 of the gas turbine 4. -.Li ⁇ i. ⁇ _; -> ran working medium AM from the combustion chamber 10 into the gas turbine 4, a line 15 is provided.
  • the gas turbine 4 and the air compressor 6 and a generator 16 are seated on a common shaft 18.
  • the steam turbine system 2b comprises a steam turbine 20 with a coupled generator 22.
  • the steam turbine system 2b also comprises a main condenser 26 which is placed in a water-steam circuit 24 of the steam turbine 20 and a heat recovery steam generator 28.
  • the steam turbine 20 consists of a first pressure stage or a High pressure part 20a and a second pressure stage or a medium pressure part 20b and a third pressure stage or a low pressure part 20c, which drive the generator 22 via a common shaft 30.
  • an exhaust gas line 32 is connected to an inlet 28a of the heat recovery steam generator. gers 28 connected.
  • the relaxed working medium AM 'from the steam turbine 4 leaves the heat recovery steam generator 28 via its outlet 28b in the direction of a comb (not shown in more detail).
  • the waste heat steam generator 28 comprises a high-pressure preheater or economizer 34, which is connected to a high-pressure drum 40 via a line 38 which can be shut off by a valve 36.
  • the high-pressure drum 40 is connected to a high-pressure evaporator 42 arranged in the waste heat steam generator 28 to form a water-steam circuit 44.
  • the high-pressure drum 40 is connected to a high-pressure superheater 46 which is arranged in the waste heat steam generator 28 and is connected on the outlet side to the steam inlet 48 of the high pressure part 20a of the steam turbine 20.
  • the Dampfa gga 50. ⁇ _- H uiuiucKtcj.! -. 2ü ⁇ _. r- ⁇ j ⁇ ) fturbine 20 is connected via a steam line 52 to an intermediate superheater 54 whose output 56 is connected via a steam line 58 to the steam inlet 60 of the medium-pressure part 20b of the steam turbine 20th
  • Its steam outlet 62 is connected via an overflow line 64 to the steam inlet 66 of the low-pressure part 20c of the steam turbine 20.
  • the steam outlet 68 of the low pressure part 20c of the steam turbine 20 is connected to the main condenser 26 via a steam line 70. This is about a 72, into which a feed water pump 74 is connected, connected to the economizer 34, so that a closed water-Da pf circuit 24 is formed.
  • heating surfaces are connected in a suitable manner to the steam inlet 60 of the medium pressure part 20b of the steam turbine 20 or to the steam inlet 66 of the low pressure part 20c of the steam turbine 20.
  • the gas and steam turbine system 2 is designed to achieve a particularly high degree of efficiency.
  • a first partial exhaust line 78a of the exhaust air line 78 of the generator 16 of the gas turbine system 2a opens into the intake air line 8 and can be shut off with a valve 76.
  • a second partial exhaust air line 78b, which can be shut off with a valve 80, of the exhaust air line 78 of the generator 16 of the gas turbine system 2a opens into the surroundings of the gas and steam turbine system 2.
  • the generator 22 of the steam turbine system 2b also has an exhaust air line 82, which is divided into a first one branched with a valve 84 partial exhaust line 82a and branched into a second partial exhaust line 82b which can be blocked with a valve 86.
  • the partial exhaust air _ • - .. -! _. l r 82a opens into the intake line o unu aie Ifc.-_ ic.j_- air line 82b opens into the surroundings of the gas and steam turbine system 2.
  • the intake air L to be supplied to the gas turbine 4 of the gas turbine system 2a can be preheated via waste heat A.
  • the waste heat A is heated waste air AL from the generator 16 of the gas turbine installation 2a and / or the generator 22 of the steam turbine installation 2b.
  • the heated exhaust air AL of the generator 16 of the gas turbine system 2a can be fed to the intake air line 8 of the air compressor 6 of the gas turbine system 2a via the shut-off partial exhaust line 78a.
  • the heated exhaust air from the generator 16 can also be discharged to the surroundings of the gas and steam turbine system 2 via a second shut-off partial flow line 78b.
  • the heated exhaust air AL of the generator 22 of the steam turbine system 2b of the intake air line 8 of the air compressor 6 of the gas turbine system 2a is likewise supplied via the shut-off partial exhaust air line 82a. bar.
  • the heated exhaust air of the generator 22 can also be supplied to the surroundings of the gas and steam turbine system 2 via the shut-off partial exhaust line 82b.
  • the gas and steam turbine system 2 By transferring the heated exhaust air AL, which either comes from the gas turbine system 2a and / or the steam turbine system 2b, to the intake air L for the gas turbine system 2a, this heat is returned to the energy conversion process of the gas and steam turbine system 2.
  • the gas and steam turbine system 2 thus has a particularly high system efficiency.
  • the preheating of the intake air L for the gas turbine system 2a also has the effect that the total mass flow of the working medium AM which can be supplied to the gas turbine 4 is lower than if the intake air L is not preheated.
  • the operation of the gas and steam turbine system 2 with preheating of the intake air L by heated exhaust air AL is therefore particularly suitable for the xeiiias r-et-riej. Zuciet .. is.
  • This mode of operation in a particularly simple form ensures a fast power reserve of the gas and steam turbine system 2. This is because if the preheating of the intake air L is switched off rapidly, the gas turbine 4 can rapidly increase the power output due to the then comparatively increased total mass flow of working medium AM that can be supplied.

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  • 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

L'invention concerne une installation de turbine à gaz (2a) conçue pour garantir un degré d'efficacité particulièrement élevé. A cet effet, on peut préchauffer l'air d'aspiration (L) amené au compresseur (6) d'une turbine à gaz (4) avec l'air (AL) sortant d'un générateur (16) refroidi par air.
PCT/DE1998/003478 1997-12-01 1998-11-25 Prechauffage de l'air d'admission pour installations de turbine a gaz WO1999028608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19753264.0 1997-12-01
DE1997153264 DE19753264C1 (de) 1997-12-01 1997-12-01 Gasturbinenanlage und Verfahren zum Betreiben einer Gasturbinenanlage sowie Gas- und Dampfturbinenanlage

Publications (1)

Publication Number Publication Date
WO1999028608A1 true WO1999028608A1 (fr) 1999-06-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/003478 WO1999028608A1 (fr) 1997-12-01 1998-11-25 Prechauffage de l'air d'admission pour installations de turbine a gaz

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DE (1) DE19753264C1 (fr)
WO (1) WO1999028608A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2500454A (en) * 2012-03-21 2013-09-25 Mitsui Shipbuilding Eng Gas turbine intake anti-icing device
CN105705735A (zh) * 2013-11-05 2016-06-22 西门子公司 利用发电机的废热的热力发电厂

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2196633A1 (fr) * 2008-12-15 2010-06-16 Siemens Aktiengesellschaft Centrale dotée d'une unité de turbine et d'un générateur

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508397A (en) * 1948-12-14 1950-05-23 Kane Saul Allan Cooling means for gas turbogenerators
DE865842C (de) * 1945-04-13 1953-02-05 Siemens Ag Gleichdruck-Gasturbinenmaschinensatz
DE1751613A1 (de) * 1968-06-28 1971-04-29 Klaue Hermann Durch Verbrennungsturbine angetriebener Elektrogenerator,insbesondere fuer Fahrzeugantriebe
DE3002615A1 (de) * 1979-12-05 1981-06-11 BBC AG Brown, Boveri & Cie., Baden, Aargau Verfahren und einrichtung fuer den teillastbetrieb von kombinierten kraftanlagen
DE3702654A1 (de) 1986-02-07 1987-08-13 Westinghouse Electric Corp Verfahren zum betrieb einer gasturbinenanlage mit heizwertschwachem brennstoff
DE3833832A1 (de) 1988-10-05 1990-04-12 Krantz Gmbh Energieplanung H Verfahren zum betreiben einer waerme-kraft-anlage
DE4137946A1 (de) 1991-11-18 1993-05-19 Siemens Ag Gas- und dampfkraftwerk mit verbesserter dampfnutzung
DE19622057A1 (de) * 1996-05-31 1997-12-04 Energieversorgung Halle Gmbh Verfahren und Vorrichtung zur effizienten Nutzung von Abwärmen bei Leistungskraftmaschinen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865842C (de) * 1945-04-13 1953-02-05 Siemens Ag Gleichdruck-Gasturbinenmaschinensatz
US2508397A (en) * 1948-12-14 1950-05-23 Kane Saul Allan Cooling means for gas turbogenerators
DE1751613A1 (de) * 1968-06-28 1971-04-29 Klaue Hermann Durch Verbrennungsturbine angetriebener Elektrogenerator,insbesondere fuer Fahrzeugantriebe
DE3002615A1 (de) * 1979-12-05 1981-06-11 BBC AG Brown, Boveri & Cie., Baden, Aargau Verfahren und einrichtung fuer den teillastbetrieb von kombinierten kraftanlagen
DE3702654A1 (de) 1986-02-07 1987-08-13 Westinghouse Electric Corp Verfahren zum betrieb einer gasturbinenanlage mit heizwertschwachem brennstoff
DE3833832A1 (de) 1988-10-05 1990-04-12 Krantz Gmbh Energieplanung H Verfahren zum betreiben einer waerme-kraft-anlage
DE4137946A1 (de) 1991-11-18 1993-05-19 Siemens Ag Gas- und dampfkraftwerk mit verbesserter dampfnutzung
DE19622057A1 (de) * 1996-05-31 1997-12-04 Energieversorgung Halle Gmbh Verfahren und Vorrichtung zur effizienten Nutzung von Abwärmen bei Leistungskraftmaschinen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2500454A (en) * 2012-03-21 2013-09-25 Mitsui Shipbuilding Eng Gas turbine intake anti-icing device
JP2013194619A (ja) * 2012-03-21 2013-09-30 Mitsui Eng & Shipbuild Co Ltd ガスタービン吸気凍結防止装置
CN105705735A (zh) * 2013-11-05 2016-06-22 西门子公司 利用发电机的废热的热力发电厂

Also Published As

Publication number Publication date
DE19753264C1 (de) 1999-06-17

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