EP0584072B1 - Gas- und dampfturbinenanlage - Google Patents

Gas- und dampfturbinenanlage Download PDF

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Publication number
EP0584072B1
EP0584072B1 EP92900067A EP92900067A EP0584072B1 EP 0584072 B1 EP0584072 B1 EP 0584072B1 EP 92900067 A EP92900067 A EP 92900067A EP 92900067 A EP92900067 A EP 92900067A EP 0584072 B1 EP0584072 B1 EP 0584072B1
Authority
EP
European Patent Office
Prior art keywords
gas
steam
turbine
heat exchanger
air
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.)
Expired - Lifetime
Application number
EP92900067A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0584072A1 (de
Inventor
Wolfgang Vollmer
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP0584072A1 publication Critical patent/EP0584072A1/de
Application granted granted Critical
Publication of EP0584072B1 publication Critical patent/EP0584072B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01K23/103—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 with afterburner in exhaust boiler

Definitions

  • the invention relates to a gas and steam turbine system with a steam generator connected downstream of the gas turbine on the exhaust gas side for generating steam for the steam turbine in a water-steam cycle, the steam generator comprising a combustion system connected downstream of a coal mill.
  • Such a gas and steam turbine system with a steam generator with associated combustion system and upstream coal mill is known from US-A-3,095,699.
  • the exhaust gas stream of the gas turbine is divided into partial streams, one partial stream being used as combustion air for the furnace and another partial stream for drying coal, and further a partial stream for preheating the feed water.
  • US-A-3,314,231 it is also known to first lead the exhaust gas from a gas turbine system via a heat recovery steam generator before it is fed to a firing system of a downstream steam generator.
  • the invention is therefore based on the object of achieving the highest possible overall efficiency when retrofitting an existing steam turbine system with a gas turbine in all operating states.
  • the greatest possible utilization of existing assemblies should be made possible.
  • a first adjustable subset of the exhaust gas cooled in a heat exchanger can be supplied as combustion air from the gas turbine of the furnace, that a second adjustable subset of the cooled exhaust gas can be supplied to a heat exchanger for heating air for the coal mill and that one third subset of the cooled exhaust gas the flue gas flowing through the steam generator from the combustion system can be admixed.
  • the heat exchanger or cooler through which the exhaust gas flows from the gas turbine is expediently connected to the water-steam circuit of the steam turbine.
  • the exhaust gas from the gas turbine is advantageously cooled to the maximum temperature permitted in the design of the existing flue gas ducts of the steam turbine system.
  • part of the air warmed up in the second heat exchanger can be supplied to the first part of the cooled exhaust gas from the gas turbine.
  • the air heated in the second heat exchanger can be mixed with cold air for the coal mill.
  • the advantages achieved by the invention consist in particular in that, on the one hand, by cooling the exhaust gases from the gas turbine in a heat exchanger, overheating of already existing flue gas ducts of the steam turbine system is reliably avoided, and on the other hand, by dividing the cooled exhaust gases into controllable portions, additional use of the the exhaust gases contain heat for the overall process and thus a high overall efficiency of the system is achieved regardless of the operating state.
  • FIG. 1 shows a schematic representation of a gas and steam turbine system with a division of the exhaust gases from the gas turbine into three controllable partial flows.
  • the gas and steam turbine system comprises a steam generator 2 and a steam turbine 4 connected to a water-steam circuit 3 with a connected generator 5 as well as a gas turbine 6 upstream of the steam generator 2 with a coupled generator 7.
  • the steam generator 2 comprises a combustion system 8 which is connected to a coal mill 10 via a fuel line 9.
  • a condenser 15 and a pump 16 connected downstream of the condenser 15 and a preheater 17 arranged in the steam generator 2 are connected in the water-steam circuit 3 of the steam turbine 4, which is shown in simplified form.
  • the preheater 17 is connected via a first branch 18, into which a valve 19 is connected, to a heat exchanger 20 heated by the hot exhaust gas a from the gas turbine 6.
  • the preheater 17 is also connected via a second branch 22 to a heating device 24 arranged in the steam generator 2 in the region of a combustion chamber 23.
  • the heat exchanger 20 is connected on the output side to the steam turbine 4 via a steam line 21.
  • the heat exchanger 20 is connected on the primary side to an exhaust line 25 connected to the gas turbine 6.
  • a first partial flow line 26 is connected to the exhaust line 25 and opens into the combustion system 8.
  • the exhaust gas line 25 is also connected via a second partial flow line 27 to an inlet 2a of the steam generator 2.
  • the exhaust line 25 also has a third partial flow line 28, into which a second heat exchanger 29 is connected.
  • Flaps 30, 31 and 32 for example throttle valves or other control elements, are connected in the partial flow lines 26, 27 and 28. The flaps 30, 31 and 32 can be actuated by motors, not shown.
  • the hot exhaust gas a flowing out of the gas turbine 6 is cooled in the heat exchanger 20 to about 400 ° C., so that the walls of the partial flow lines 26, 27 and 28 designed as flue gas channels are not heated above 400 ° C.
  • the exhaust gas a is divided into three adjustable subsets t1, t2 and t3.
  • the partial quantity t1 flowing via the partial flow line 26 is adjusted to the combustion air system 8's need for combustion air, ie in particular as a function of the operating state of the system.
  • the partial quantity t1 compressed and preheated in the heat exchanger 29 air L from an air compressor 35 can be added.
  • the air compressor 35 is connected to the partial flow line 26 via an air line 36 connected in the heat exchanger 29 on the secondary side.
  • a flap 37 is connected in the air line 36 to set the required amount of air.
  • the part of the exhaust gases a not required for the combustion system 8 is conducted via the partial flow lines 27 and 28 on the one hand into the steam generator 2 and on the other hand via the second heat exchanger 29.
  • the partial quantity t3 of the exhaust gas a flowing via the partial flow line 27 is mixed with the flue gas r generated in the combustion system 8.
  • the partial quantity t3 of the exhaust gas a and the flue gas r leave the steam generator 2 via its outlet 2b and via a gas filter 40 in the direction of a chimney (not shown).
  • the adjustable partial quantity t2 of the exhaust gas a conducted via the partial flow line 28 heats the air L flowing through the air line 36 in the heat exchanger 29 and is subsequently mixed with the flue gas r flowing out of the steam generator 2 behind the gas filter 40.
  • the temperature of the air L for the coal mill 10 is adjusted by admixing an amount of cold air that can be adjusted by means of the flap 46 to the heated air L from the heat exchanger 29.
  • the flue gas r from the combustion system 8 and the partial quantity t3 of the exhaust gas a flowing into the steam generator 2 via the partial flow line 27 serve to generate steam for the steam turbine 4.
  • water from the condenser 15 is pumped into the flue gas r and pumped by the exhaust gas a preheater 17 and preheated there.
  • the heated water flowing over the branch 22 is evaporated and overheated in the heating surfaces 24 heated by the hot flue gases r from the furnace 8.
  • the superheated steam is fed to the steam turbine 4 via a steam line 50.
  • the heated water flowing via the branch 18 is likewise evaporated and overheated in the heat exchanger 20 and fed to the steam turbine 4. There, the superheated steam is expanded and then condensed in the condenser 15.
  • the gas turbine 6 Due to the inventive division of the cooled exhaust gases a from the gas turbine 6 into three adjustable subsets t1, t2 and t3, on the one hand the gas turbine 6 is decoupled from the requirements of the combustion system with regard to the amount of air required in different operating states. On the other hand, the steam generator 2 and thus the steam process can be operated independently of the load state of the gas turbine 6.

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)
  • Air Supply (AREA)
EP92900067A 1991-05-16 1991-12-06 Gas- und dampfturbinenanlage Expired - Lifetime EP0584072B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4116065A DE4116065A1 (de) 1991-05-16 1991-05-16 Gas- und dampfturbinenanlage
DE4116065 1991-05-16
PCT/DE1991/000952 WO1992020905A1 (de) 1991-05-16 1991-12-06 Gas- und dampfturbinenanlage

Publications (2)

Publication Number Publication Date
EP0584072A1 EP0584072A1 (de) 1994-03-02
EP0584072B1 true EP0584072B1 (de) 1996-05-22

Family

ID=6431811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92900067A Expired - Lifetime EP0584072B1 (de) 1991-05-16 1991-12-06 Gas- und dampfturbinenanlage

Country Status (7)

Country Link
US (1) US5367870A (uk)
EP (1) EP0584072B1 (uk)
JP (1) JP3231761B2 (uk)
DE (2) DE4116065A1 (uk)
RU (1) RU2090761C1 (uk)
UA (1) UA27727C2 (uk)
WO (1) WO1992020905A1 (uk)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08503060A (ja) * 1992-11-17 1996-04-02 アパラーテバウ ローテミューレ ブラント ウント クリッツラー ゲゼルシャフト ミット ベシュレンクテル ハフツング 燃焼設備
ES2064242B1 (es) * 1992-12-02 1997-09-01 Ingenieria Y Promocion Ind S A Sistema de regulacion de gases de escape de turbinas de gas en una caldera de recuperacion y caldera correspondiente.
DE4304124C1 (de) * 1993-01-23 1994-03-31 Steinmueller Gmbh L & C Verfahren zur Erzeugung von elektrischer Energie in einem Kombi-Kraftwerk und Kombi-Kraftwerk zur Durchführung des Verfahrens
AT411183B (de) * 1994-10-28 2003-10-27 Ae Energietechnik Gmbh Verfahren und kombikraftwerk zur thermischen leistungserhöhung
DE19542917A1 (de) * 1994-12-21 1996-06-27 Abb Management Ag Kombianlage mit konventionellem Wasser/Dampf-Kreislauf
DE19626011A1 (de) * 1996-06-28 1998-01-02 Lentjes Kraftwerkstechnik Kombinierte Gas-Dampf-Kraftanlage und Prozeß
DE10001997A1 (de) * 2000-01-19 2001-07-26 Alstom Power Schweiz Ag Baden Verbund-Kraftwerk sowie Verfahren zum Betrieb eines solchen Verbund-Kraftwerkes
EP1174591A1 (de) * 2000-07-21 2002-01-23 Siemens Aktiengesellschaft Verfahren zur Primärregelung mit einer kombinierten Gas- und Dampfturbinenanlage
DE10225126B4 (de) * 2001-06-13 2014-05-15 Alstom Technology Ltd. Verfahren zur Verfeuerung eines festen und/oder pastösen Brennstoffes sowie ein staubbefeuerter Dampferzeuger zur Durchführung des Verfahrens
ITVE20090055A1 (it) * 2009-10-02 2011-04-03 Giovanni Parise Aumento di efficienza degli impianti termoelettrici
CN103170398A (zh) * 2013-03-26 2013-06-26 上海理工大学 一种利用微电站余热的烘干破碎机系统
JP6351389B2 (ja) * 2014-06-10 2018-07-04 大阪瓦斯株式会社 排気再燃システム
US11319874B1 (en) * 2020-10-30 2022-05-03 Doosan Heavy Industries & Construction Co., Ltd. Air supplying apparatus and method of hybrid power generation equipment

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055385A (en) * 1933-08-08 1936-09-22 Bbc Brown Boveri & Cie Pulverizing plant
FR927969A (fr) * 1946-04-26 1947-11-14 Réchauffage de la vapeur en cours de détente dans une machine par les gaz d'échappement d'une machine thermique à gaz
US3095699A (en) * 1958-12-18 1963-07-02 Babcock & Wilcox Co Combined gas-steam turbine power plant and method of operating the same
GB904536A (en) * 1960-04-08 1962-08-29 Mini Of Mines & Technical Surv Combined steam and gas turbine plant
US3314231A (en) * 1965-12-29 1967-04-18 Combustion Eng Steaming feedwater system utilizing gas turbine exhaust
FR2030500A5 (uk) * 1969-01-31 1970-11-13 Stein Industrie
CH528702A (de) * 1970-09-08 1972-09-30 Sulzer Ag Abgasdampferzeuger
DE2044619C3 (de) * 1970-09-09 1975-01-09 Bayer Ag, 5090 Leverkusen Basische Azolindolin-Farbstoffe, Verfahren zu deren Herstellung und deren Verwendung zum Färben und Bedrucken von organischen Fasermaterialien
JPH0678536B2 (ja) * 1985-08-27 1994-10-05 三菱重工業株式会社 コンバインドプラント
DE3668347D1 (de) * 1985-09-02 1990-02-22 Siemens Ag Kombiniertes gas- und dampfturbinenkraftwerk.

Also Published As

Publication number Publication date
EP0584072A1 (de) 1994-03-02
DE59107850D1 (de) 1996-06-27
JP3231761B2 (ja) 2001-11-26
JPH06507459A (ja) 1994-08-25
US5367870A (en) 1994-11-29
DE4116065A1 (de) 1992-11-19
RU2090761C1 (ru) 1997-09-20
WO1992020905A1 (de) 1992-11-26
UA27727C2 (uk) 2000-10-16

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