EP0586425B1 - Energy generating process in a combined gas/steam generating power station - Google Patents
Energy generating process in a combined gas/steam generating power station Download PDFInfo
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- EP0586425B1 EP0586425B1 EP92910154A EP92910154A EP0586425B1 EP 0586425 B1 EP0586425 B1 EP 0586425B1 EP 92910154 A EP92910154 A EP 92910154A EP 92910154 A EP92910154 A EP 92910154A EP 0586425 B1 EP0586425 B1 EP 0586425B1
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- steam
- steam generator
- gas
- power station
- turbine
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- 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
Definitions
- the invention relates to a combined gas-steam power Plant for the production of energy with a firing chamber having gas turbine cycle and a coal-fired steam turbine circuit, being the gas turbine one with water Heat recovery steam generator system fed from the steam turbine cycle downstream and a connecting line between the steam side exit of the Heat recovery steam generator system and the steam-side outlet of the steam generator is provided.
- the hot turbine gases for those with increasing Gas turbine development rising gas turbine inlet temperatures are aimed at showing higher ones Temperatures lower oxygen levels. This performs in auxiliary fired steam generators that both the gas turbine exhaust heat as well as that in the gas turbine exhaust contained oxygen for combustion in the Want to use additional firing, so that the hereby Provided oxygen concentration through fresh air must be increased to complete combustion to ensure.
- the setting and control of the steam temperature is essentially carried out by additional firing directly at the hot end of the heat recovery steam generation system (see FIG. 1 and page 50 bottom left).
- This additional firing increases the exhaust gas temperature of the gas turbine as a whole, which means that the steam temperature in the superheater can also be influenced, with corresponding effects but also on the heat exchanger surfaces downstream of the superheater in the direction of the cold end.
- Such a control concept is relatively complex and yet sluggish, since the entire mass flow must be treated in each case.
- the present invention is based on the object a process for generating energy in one combined gas-steam power plant of the aforementioned Kind both to achieve higher efficiencies than also to further develop availability.
- this object is achieved by that in the steam-carrying connecting line between the heat recovery steam generator system and the steam generator an additional boiler with its own furnace for adjustment the temperature of the steam flow from the heat recovery steam generator the temperature of the steam flow from the steam generator is integrated.
- the combined gas-steam power plant according to the invention is characterized by a full firing side Decoupling of the two energy generation cycles out. Compared to the state of the So the hot exhaust gas from the gas turbine does not become technology introduced into the steam generator, but for generation of process steam in its own heat recovery steam generator utilized.
- the invention is therefore particularly suitable for Retrofitting or expansion of existing steam power plants, since there are no interventions in the firing area of the steam generator or in the flue gas path integrated heat dissipation and gas cleaning systems become necessary.
- thermodynamic connection of the two energy generation cycles takes place exclusively via the Water-steam cycle.
- the two in the heat recovery steam generator and high-voltage generated in the steam generator Steam streams are adjusted after their Vapor states, essentially their temperatures, mixed and then in the same steam turbine relaxed working.
- This also includes the adjustment of the steam flows required additional heat without influencing the furnace of the steam generator and generated in an additional boiler transferred, d. H. it is Z. B. not vorese hen, if the additional heat in an additional firing is generated, the hot flue gases of this additional firing in the combustion output zone of the steam generator initiate.
- the invention provides for the case of an additional boiler with its own furnace, the hot flue gas flow this furnace either the exhaust gas from the gas turbine before entering the heat recovery steam generator system or also the flue gas from the steam generator behind the Add the firing power zone to then the residual heat either in the heat recovery steam generator itself or in the in the Rauchgsweg of the steam generator integrated heat exchangers. It offers then an admixture to the exhaust gas from the gas turbine if the additional firing with gas or oil as fuel is operated while an admixture to Flue gas flow from the steam generator for one with coal operated auxiliary firing is more likely.
- the power ratio between the heat recovery steam generator system and the steam generator in the gas-steam power plant operated according to the invention is expediently ⁇ 1, preferably between 1: 1 and 1: 4.
- the required or desired power ratio of the heat recovery steam generator system to the steam generator can be set by arranging a plurality of gas turbines, the respective heat recovery steam generator systems of which are connected in parallel with respect to the steam flow.
- the figure shows schematically one according to the invention Processed combined gas-steam power plant.
- the relaxed working steam in three turbine stages 9, 10 and 11, which are arranged on the same shaft with a generator 12, is condensed in a condenser 13 and conveyed as condensate by means of a pump via preheaters 15 and 16 connected in parallel into a feed water tank 17.
- the water collected in the feed water tank 17 is pumped to process pressure in a high-pressure pump 18 and then divided into two partial flows.
- the one partial flow first passes through a line 19 to a heat exchanger 20 heated by extraction steam and is then fed to a coal-fired steam generator system 21, for example it can be the steam generator of an existing coal-fired power plant.
- a coal-fired steam generator system 21 for example it can be the steam generator of an existing coal-fired power plant.
- the second partial flow of the pressurized feed water is fed via a line 22 to the heat recovery steam generator system 7 and is evaporated and heated in heating surfaces 23 in heat exchange with the hot exhaust gas from the gas turbine 4.
- the steam thus obtained, which has not yet been completely overheated, is fed via line 24 to an additional boiler 25 which is gas-heated in this exemplary embodiment and is further heated there by supplying additional heat to the temperature of the superheated steam produced in the steam generator 21.
- Both partial streams from the auxiliary boiler 25 and the steam generator system 21, now adjusted in their steam states, are mixed with one another and fed to the first stage 9 of the three-stage steam turbine.
- the partially expanded steam stream is reheated.
- the steam flow is divided into two partial flows.
- the intermediate superheating of the one partial flow takes place in heating surfaces 27 within the gas-heated additional boiler 25, while the second partial flow is reheated in an intermediate superheater 28 integrated into the flue gas path of the steam generator.
- the partial steam flow in the heating surfaces 27 corresponds in quantity to the steam flow flowing out of the heat recovery steam generator system 7 via the line 24.
- the intermediate superheating of the steam generated in the heat recovery steam generator 7 takes place independently of the heat generation and heat transfer systems of the steam generator 21, so that, for. B. a standstill of the steam generator 21 has no effect on the reheating of the steam from the heat recovery steam generator 7.
- the still hot flue gas accumulating in the auxiliary boiler 25 is drawn off according to the invention via a line 26, mixed with the hot exhaust gas of the gas turbine 4 flowing in line 6 and cooled together with this in the heat recovery steam generator system 7 and then withdrawn from the system.
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- Engine Equipment That Uses Special Cycles (AREA)
Description
Die Erfindung betrifft eine kombinierte Gas-Dampfkraft anlage zur Erzeugung von Energie mit einem eine Brenkammer aufweisenden Gasturbinenkreislauf und einem einen kohlebefeuerten Dampferzeuger aufweisenden Dampfturbinenkreislauf, wobei der Gasturbine eine mit Wasser aus dem Dampfturbinenkreislauf gespeiste Abhitzedampferzeugeranlage nachgeschaltet und eine Verbindungsleitung zwischen dem dampfseitigen Ausgang der Abhitzedampferzeugeranlage und dem dampfseitigen Ausgang des Dampferzeugers vorgesehen ist.The invention relates to a combined gas-steam power Plant for the production of energy with a firing chamber having gas turbine cycle and a coal-fired steam turbine circuit, being the gas turbine one with water Heat recovery steam generator system fed from the steam turbine cycle downstream and a connecting line between the steam side exit of the Heat recovery steam generator system and the steam-side outlet of the steam generator is provided.
Bei einer bekannten kombinierten Gas-Dampfkraftanlage zur Erzeugung elektrischer Energie wird das in der öl- oder gasbefeuerten Brennkammer der Gasturbine anfallende verdichtete Arbeitsgas bei einer Temperatur von inzwischen über 1000° C zunächst in der Gasturbine arbeitsleistend entspannt. Die heißen Turbinenabgase werden in die Feuerungsleistungszone des Dampferzeugers eingespeist, wobei dann auch die Restwärme des Gasturbinenabgases im Dampferzeuger genutzt wird. Aufgrund der hohen Temperaturdifferenz zwischen dem Eingang der Gasturbine und dem Ausgang der Dampfturbine weist ein derartiger kombinierter Prozeß einen relativ hohen Wirkungsgrad auf.In a known combined gas-steam power plant to generate electrical energy, this is done in the oil or gas-fired combustion chamber of the gas turbine compressed working gas at a temperature of meanwhile above 1000 ° C initially working in the gas turbine relaxed. The hot turbine exhaust into the firing power zone of the steam generator fed in, then the residual heat of the Gas turbine exhaust gas is used in the steam generator. Because of the high temperature difference between the input the gas turbine and the output of the steam turbine such a combined process has a relative high efficiency.
Die heißen Turbinengase, für die mit fortschreitender Gasturbinenentwicklung steigende Gasturbineneintrittstemperaturen angestrebt werden, weisen mit höheren Temperaturen geringere Sauerstoffgehalte auf. Dies führt in zusatzgefeuerten Dampferzeugern, die sowohl die Gasturbinenabgaswärme als auch den im Gasturbinenabgas enthaltenen Sauerstoff zur Verbrennung in der Zusatzfeuerung nutzen wollen, dazu, daß die hiermit gebotene Sauerstoffkonzentration durch weitere Frischluft erhöht werden muß, um eine vollständige Verbrennung zu gewährleisten.The hot turbine gases, for those with increasing Gas turbine development rising gas turbine inlet temperatures are aimed at showing higher ones Temperatures lower oxygen levels. This performs in auxiliary fired steam generators that both the gas turbine exhaust heat as well as that in the gas turbine exhaust contained oxygen for combustion in the Want to use additional firing, so that the hereby Provided oxygen concentration through fresh air must be increased to complete combustion to ensure.
Dadurch erhöht sich bei gleicher Dampferzeugerleistung der Abgas- bzw. Rauchgasmassenstrom durch den Dampferzeuger und die nachgeschalteten Komponenten, wie Elektrofilter, Saugzug, Entstickungsanlage und Rauchgasentschwefelungsanlage. Größeres Gasturbinenvolumen und zusätzliche Frischluft führten im Vergleich zu einer Verbrennung ausschließlich mit Frischluft wiederum zu einer Erhöhung des Energieeigenbedarfes der Kraftwerksanlage, so daß ein Teil der durch die Kombination von Gasturbine und Dampfturbine gewonnenen Wirkungsgradverbesserung wieder aufgezehrt wird.This increases with the same steam generator output the exhaust gas or flue gas mass flow through the steam generator and the downstream components, such as electrostatic filters, Suction draft, denitrification plant and flue gas desulphurization plant. Larger gas turbine volume and additional fresh air compared to one Combustion only with fresh air too an increase in the energy needs of the power plant, so part of that through the combination efficiency improvement obtained from gas turbine and steam turbine is consumed again.
Auch ist nicht auszuschließen, daß durch die enge und vielfache Verknüpfung der beiden Teilprozesse die Verfügbarkeit der Gesamtanlage negativ beeinflußt wird.Also it cannot be ruled out that the close and multiple linking of the two sub-processes the availability the entire system is adversely affected.
Die Zeitschrift "Oil and Gas Journal" ( Vol 27, Nr.
21, May 27, 1974, S. S. 48 - 51) offenbart eine kombinierte
Gas-Dampfkraftanlage, bei der in der Brennkammer
der Gasturbine Erdgas und in Zusatzboilern Butan
verbrannt^21 wird. Die entsprechende Feuerung ist so
ausgelegt, daß mit Sicherheit keine Flüssigkeit in die
Turbine gelangen und dort die Turbinenschaufeln zerstören
kann. Insoweit sind die Boiler mit dem erfindungsgemäßen
Zusatzkessel nicht vergleichbar. The magazine "Oil and Gas Journal" (
Gemäß der Veröffentlichung erfolgt die Einstellung und
Regelung der Dampftemperatur im wesentlichen durch eine
Zusatzfeuerung direkt am heißen Ende der Abhitzedampferzeugungsanlage
(vgl. Figur 1 und Seite 50 links
unten). Durch diese Zusatzfeuerung wird die Abgastemperatur
der Gasturbine insgesamt erhöht, wodurch dann
auch auf die Dampftemperatur im Überhitzer Einfluß genommen
werden kann, mit entsprechenden Auswirkungen
aber auch auf die dem Überhitzer in Richtung kaltes
Ende nachgeschalteten Wärmetauscherflächen.
Ein derartiges Regelkonzept ist relativ aufwendig und
doch träge, da jeweils der gesamte Massenstrom behandelt
werden muß.According to the publication, the setting and control of the steam temperature is essentially carried out by additional firing directly at the hot end of the heat recovery steam generation system (see FIG. 1 and page 50 bottom left). This additional firing increases the exhaust gas temperature of the gas turbine as a whole, which means that the steam temperature in the superheater can also be influenced, with corresponding effects but also on the heat exchanger surfaces downstream of the superheater in the direction of the cold end.
Such a control concept is relatively complex and yet sluggish, since the entire mass flow must be treated in each case.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Erzeugung von Energie in einer kombinierten Gas-Dampfkraftanlage der eingangs genannten Art sowohl zur Erzielung höherer Wirkungsgrade als auch zur Erhöhung der Verfügbarkeit weiterzuentwickeln.The present invention is based on the object a process for generating energy in one combined gas-steam power plant of the aforementioned Kind both to achieve higher efficiencies than also to further develop availability.
Diese Aufgabe wird erfindgungsgemäß dadurch gelöst, daß in die dampfführende Verbindungsleitung zwischen der Abhitzedampferzeugeranlage und dem Dampferzeuger ein Zusatzkessel mit eigener Feuerung zur Angleichung der Temperatur des Dampfstromes aus der Abhitzedampferzeugungsanlage an die Temperatur des Dampfstromes aus dem Dampferzeuger integriert ist.According to the invention, this object is achieved by that in the steam-carrying connecting line between the heat recovery steam generator system and the steam generator an additional boiler with its own furnace for adjustment the temperature of the steam flow from the heat recovery steam generator the temperature of the steam flow from the steam generator is integrated.
Die erfindungsgemäße kombinierte Gas-Dampfkraftanlage zeichnet sich durch eine vollständige feuerungseitige Entkopplung der beiden Energieerzeugungskreisläufe aus. Im Vergleich zum bekanntgewordenen Stand der Technik wird also das heiße Abgas der Gasturbine nicht in den Dampferzeuger eingeleitet, sondern zur Erzeugung von Prozeßdampf in einer eigenen Abhitzedampferzeugeranlage genutzt.The combined gas-steam power plant according to the invention is characterized by a full firing side Decoupling of the two energy generation cycles out. Compared to the state of the So the hot exhaust gas from the gas turbine does not become technology introduced into the steam generator, but for generation of process steam in its own heat recovery steam generator utilized.
Durch eine derartige Entkopplung entfällt eine wesentliche Nahtstelle in der Gesamtanlage mit Vorteilen im Hinblick auf die Verbesserung von deren Verfügbarkeit.Such decoupling eliminates one of the essential ones Interface in the overall system with advantages in In terms of improving their availability.
Auch werden bei einer erfindungsgemäßen Gas-Dampfkraftanlage der Dampferzeuger selbst und in der Regel auch die nachgeschalteten Aggregate nicht mit zusätzlichen Abgasmengen aus dem Gasturbinenprozeß bzw. einer ggf. vorhandenen Zusatzfeuerung zur Erzeugung der benötigten Zusatzwärme belastet.Also in a gas-steam power plant according to the invention the steam generator itself and in the Do not usually include the downstream units either additional exhaust gas quantities from the gas turbine process or any existing additional firing for generation the additional heat required.
Die Erfindung eignet sich somit insbesondere auch zur Nachrüstung bzw. Erweiterung bestehender Dampfkraftwerke, da hierbei keine Eingriffe in den Feuerungsbereich des Dampferzeugers bzw. in die in den Rauchgasweg integrierten Wärmeableitungs- und Gasreinigungssysteme erforderlich werden.The invention is therefore particularly suitable for Retrofitting or expansion of existing steam power plants, since there are no interventions in the firing area of the steam generator or in the flue gas path integrated heat dissipation and gas cleaning systems become necessary.
Die thermodynamische Verknüpfung der beiden Energieerzeugungskreisläufe erfolgt ausschließlich über den Wasser-Dampfkreislauf. Die beiden in der Abhitzedampferzeugeranlage und im Dampferzeuger erzeugten hochgespannten Dampfteilströme werden nach Angleichung ihrer Dampfzustände, also im wesentlichen ihrer Temperaturen, vermischt und dann in der gleichen Dampfturbine arbeitsleistend entspannt.The thermodynamic connection of the two energy generation cycles takes place exclusively via the Water-steam cycle. The two in the heat recovery steam generator and high-voltage generated in the steam generator Steam streams are adjusted after their Vapor states, essentially their temperatures, mixed and then in the same steam turbine relaxed working.
Dabei wird auch die zur Angleichung der Dampfströme benötigte Zusatzwärme ohne Einflußnahme auf die Feuerung des Dampferzeugers erzeugt und in einen Zusatzkessel übertragen, d. h. es ist z. B. nicht vorgese hen, sofern die Zusatzwärme in einer Zusatzfeuerung erzeugt wird, die heißen Rauchgase dieser Zusatzfeuerung in die Feuerungsleistungszone des Dampferzeugers einzuleiten.This also includes the adjustment of the steam flows required additional heat without influencing the furnace of the steam generator and generated in an additional boiler transferred, d. H. it is Z. B. not vorese hen, if the additional heat in an additional firing is generated, the hot flue gases of this additional firing in the combustion output zone of the steam generator initiate.
Die Erfindung sieht für den Fall eines Zusatzkessels mit eigener Feuerung vielmehr vor, den heißen Rauchgasstrom dieser Feuerung entweder dem Abgas der Gasturbine vor Eintritt in die Abhitzedampferzeugeranlage oder auch dem Rauchgas des Dampferzeugers hinter der Feuerungsleistungszone zuzumischen, um dann die Restwärme entweder in der Abhitzedampferzeugeranlage selbst oder auch in den im Rauchgsweg des Dampferzeugers integrierten Wärmetauschern zu nutzen. Dabei bietet sich eine Zumischung zum Abgas der Gasturbine dann an, wenn die Zusatzfeuerung mit Gas oder Öl als Brennstoff betrieben wird, während eine Zumischung zum Rauchgasstrom des Dampferzeugers bei einer mit Kohle betriebenen Zusatzfeuerung eher in Frage kommt.The invention provides for the case of an additional boiler with its own furnace, the hot flue gas flow this furnace either the exhaust gas from the gas turbine before entering the heat recovery steam generator system or also the flue gas from the steam generator behind the Add the firing power zone to then the residual heat either in the heat recovery steam generator itself or in the in the Rauchgsweg of the steam generator integrated heat exchangers. It offers then an admixture to the exhaust gas from the gas turbine if the additional firing with gas or oil as fuel is operated while an admixture to Flue gas flow from the steam generator for one with coal operated auxiliary firing is more likely.
Das Leistungsverhältnis zwischen der Abhitzedampferzeugeranlage
und dem Dampferzeuger liegt bei der erfindungsgemäß
betriebenen Gas-Dampfkraftanlage zweckmäßigerweise
bei ≤ 1, vorzugsweise zwischen 1 : 1 und
1: 4.
Dabei kann nach einem weiteren Merkmal der Erfindung
das jeweils geforderte bzw. gewünschte Leistungsverhältnis
von Abhitzedampferzeugeranlage zu Dampferzeuger
durch die Anordnung mehrerer Gasturbinen, deren
jeweilige Abhitzedampferzeugeranlagen in Bezug auf die
Dampfführung parallel geschaltet sind, eingestellt
werden. The power ratio between the heat recovery steam generator system and the steam generator in the gas-steam power plant operated according to the invention is expediently ≤ 1, preferably between 1: 1 and 1: 4.
According to a further feature of the invention, the required or desired power ratio of the heat recovery steam generator system to the steam generator can be set by arranging a plurality of gas turbines, the respective heat recovery steam generator systems of which are connected in parallel with respect to the steam flow.
Weitere Erläuterungen zu der Erfindung sind dem in der Figur schematisch dargestellten Ausführungsbeispiel zu entnehmen.Further explanations of the invention are in the Figure schematically illustrated embodiment remove.
Die Figur zeigt schematisch eine nach dem erfindungsgemäßen Verfahren arbeitende kombinierte Gas-Dampfkraftanlage.The figure shows schematically one according to the invention Processed combined gas-steam power plant.
Im Gasturbinenkreislauf wird über eine Leitung 1 angesaugte
Frischluft in einem Verdichter 2 auf den Arbeitsdruck
der Gasturbine verdichtet, in einer mit
Erdgas befeuerten Brennkammer 3 stark erhitzt und dann
in einer Gasturbine 4 arbeitsleistend entspannt. Die
dabei gewonnene Energie wird an einen Generator 5 bzw.
den Verdichter 2 abgegeben. Das noch heiße Abgas der
Gasturbine wird über eine Leitung 6 einer Abhitzedampferzeugeranlage
7 zugeführt und dann über eine Leitung
8 und einen nicht dargestellten Kamin ins Freie geleitet.In the gas turbine circuit, intake is made via a
Im Dampfturbinenkreislauf wird der in drei Turbinenstufen
9, 10 und 11, die auf gleicher Welle mit einem
Generator 12 angeordnet sind, entspannte Arbeitsdampf
in einem Kondensator 13 kondensiert und als Kondensat
mittels einer Pumpe über parallel geschaltete Vorwärmer
15 und 16 in einen Speisewasserbehälter 17 gefördert.
Das im Speisewasserbehälter 17 gesammelte Wasser wird
in einer Hochdruckpumpe 18 auf Verfahrensdruck gepumpt
und dann in zwei Teilströme aufgeteilt.In the steam turbine cycle, the relaxed working steam in three
The water collected in the
Der eine Teilstrom passiert über eine Leitung 19 zunächst
einen entnahmedampfbeheizten Wärmetauscher 20
und wird dann einer kohlebefeuerten Dampferzeugeranlage
21, beispielsweise kann es sich hier um den Dampferzeuger
eines bestehenden Kohlekraftwerkes handeln,
zugeführt.
Der zweite Teilstrom des auf Druck gebrachten Speisewassers
wird nach der Erfindung über eine Leitung 22
der Abhitzedampferzeugeranlage 7 zugeführt und in
Heizflächen 23 im Wärmetausch mit dem heißen Abgas der
Gasturbine 4 verdampft und überhitzt. Der dabei gewonnene,
noch nicht endüberhitzte Dampf wird über eine
Leitung 24 einem in diesem Auführungsbeispiel gasbeheizten
Zusatzkessel 25 zugeführt und dort durch Zufuhr
von Zusatzwärme auf die Temperatur des im Dampferzeuger
21 anfallenden überhitzten Wasserdampfes
weiter erhitzt.
Beide nunmehr in ihren Dampfzuständen angeglichenen
Teilströme aus dem Zusatzkessel 25 und der Dampferzeugeranlage
21 werden miteinander vermischt und der
ersten Stufe 9 der dreistufigen Dampfturbine zugeführt.
Vor Eintritt in die zweite Entspannungsstufe 10
wird der teilentspannte Dampfstrom zwischenüberhitzt.
Hierzu wird der Dampfstrom in zwei Teilströme aufgeteilt.
Die Zwischenüberhitzung des einen Teilstromes
erfolgt in Heizflächen 27 innerhalb des gasbeheizten
Zusatzkessels 25, während der zweite Teilstrom in einem
in den Rauchgasweg des Dampferzeugers integrierten
Zwischenüberhitzer 28 erneut erhitzt wird. Zweckmäßigerweise
entspricht dabei der in den Heizflächen 27
geführte Dampfteilstrom mengenmäßig dem über die Leitung
24 aus der Abhitzdedampferzeugeranlage 7 strömenden
Dampfstrom. Auf diese Weise erfolgt auch die Zwischenüberhitzung
des in der Abhitzedampferzeugeranlage
7 erzeugten Dampfes unabhängig von den
Wärmeerzeugungs- und Wärmeübertragungssystemen des
Dampferzeugers 21, so daß z. B. ein Stillstand des
Dampferzeugers 21 keine Auswirkungen auf die Zwischenüberhitzung
des Dampfes aus der Abhitzedampferzeugeranlage
7 hat.
Das im Zusatzkessel 25 anfallende noch heiße Rauchgas
wird gemäß der Erfindung über eine Leitung 26 abgezogen,
mit dem in der Leitung 6 strömenden heißen Abgas
der Gasturbine 4 vermischt und zusammen mit diesem in
der Abhitzedampferzeugeranlage 7 abgekühlt und dann
aus der Anlage abgezogen.The one partial flow first passes through a
According to the invention, the second partial flow of the pressurized feed water is fed via a
Both partial streams from the
The still hot flue gas accumulating in the
Claims (5)
- Combined gas/steam power station for generating energy with a gas turbine circuit exhibiting a combustion chamber (3) and a steam turbine circuit exhibiting a coal-fired steam generator (21), whereby the gas turbine (4) is followed by a waste heat steam generator installation (7) fed with water from the steam turbine circuit and a connecting pipe is provided between the steam-side outlet of the waste heat steam generator installation (7) and the steam-side outlet of the steam generator (21), characterised in that an auxiliary boiler (25) with its own firing system is incorporated in the steam-conveying connecting pipe between the waste heat steam generator installation (7) and the steam generator (21) to adjust the temperature of the stream of steam (24) from the waste heat steam generator installation (17) to the temperature of the stream of steam from the steam generator (21).
- Combined gas/steam power station according to claim 1, characterised in that the auxiliary boiler (25) exhibits a firing system operated with oil or gas as fuel and on the flue gas side is connected to the outlet of the gas turbine.
- Combined gas/steam power station according to claim 1, characterised in that the auxiliary boiler (25) exhibits a coal firing system and on the flue gas side is connected to the flue gas outlet of the steam generator (21) behind the firing system output zone.
- Combined gas/steam power station according to one of claims 1 to 3, whereby renewed intermediate superheating is provided at least after a first steam expansion stage, characterised in that heat exchanger surfaces (27) are provided in the auxiliary boiler (25) for the intermediate superheating of at least one steam part stream.
- Combined gas/steam power station according to claim 4, characterised in that the steam part stream undergoing intermediate superheating in the heat exchanger surfaces (27) of the auxiliary boiler (25) matches the steam part stream from the waste heat steam generator installation (7) in quantity.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914117191 DE4117191C2 (en) | 1991-05-25 | 1991-05-25 | Combined gas-steam power plant to generate energy |
| DE4117191 | 1991-05-25 | ||
| PCT/DE1992/000414 WO1992021860A1 (en) | 1991-05-25 | 1992-05-21 | Energy generating process in a combined gas/steam generating power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0586425A1 EP0586425A1 (en) | 1994-03-16 |
| EP0586425B1 true EP0586425B1 (en) | 1998-08-05 |
Family
ID=6432471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92910154A Expired - Lifetime EP0586425B1 (en) | 1991-05-25 | 1992-05-21 | Energy generating process in a combined gas/steam generating power station |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0586425B1 (en) |
| AU (1) | AU1694692A (en) |
| DE (2) | DE4117191C2 (en) |
| DK (1) | DK0586425T3 (en) |
| ES (1) | ES2121013T3 (en) |
| WO (1) | WO1992021860A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012012683A1 (en) * | 2012-06-27 | 2014-01-02 | RERUM COGNITIO Institut GmbH | Method for electric power generation in cyclic process in two-stage combined gas and steam turbine process, involves obtaining high temperatures with positive effect of efficiency in low pressures upto material limit |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2116136B1 (en) * | 1993-05-03 | 1998-12-16 | Rosado Serafin Luis Mendoza | COMBINATION IMPROVEMENT PROCEDURE BETWEEN A GAS TURBINE AND A VAPOR CYCLE WITH ANOTHER NON-FOSSIL SOURCE OF PRIMARY ENERGY. |
| ES2116139B1 (en) * | 1993-05-14 | 1999-04-16 | Rosado Serafin Mendoza | IMPROVEMENTS INTRODUCED IN INVENTION PATENT N-9301044 TITLED AN IMPROVEMENT PROCEDURE FOR COMBINED CYCLE POWER PLANTS WITH PARALLEL ENERGY CONTRIBUTION TO THE STEAM CYCLE IN A FOSSIL FUEL BOILER. |
| ES2116137B1 (en) * | 1993-05-14 | 1999-04-16 | Rosado Serafin Mendoza | AN IMPROVEMENT PROCEDURE FOR COMBINED CYCLE POWER PLANTS WITH SUPPLY OF ENERGY TO THE STEAM CYCLE IN A FOSSIL FUEL BOILER. |
| DE10001995A1 (en) | 2000-01-19 | 2001-07-26 | Alstom Power Schweiz Ag Baden | Method for setting or regulating the steam temperature of the live steam and / or reheater steamer in a composite power plant and composite power plant for carrying out the method |
| GB2390121B (en) * | 2000-01-19 | 2004-08-04 | Alstom | Combined cycle power plant |
| IT1402363B1 (en) * | 2010-06-10 | 2013-09-04 | Turboden Srl | ORC PLANT WITH SYSTEM TO IMPROVE THE HEAT EXCHANGE BETWEEN THE SOURCE OF WARM FLUID AND WORK FLUID |
| DE102011102929A1 (en) * | 2011-05-31 | 2012-12-06 | Linde Aktiengesellschaft | Method and apparatus for the production of superheated steam |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3118429A (en) * | 1961-11-08 | 1964-01-21 | Combustion Eng | Power plant in which single cycle gas turbine operates in parallel with direct fired steam generator |
| DE2512774C2 (en) * | 1975-03-22 | 1982-09-02 | Brown, Boveri & Cie Ag, 6800 Mannheim | Combined gas-steam turbine system |
| CH645433A5 (en) * | 1980-04-11 | 1984-09-28 | Sulzer Ag | COMBINED GAS TURBINE STEAM POWER PLANT. |
| DE3815536C1 (en) * | 1988-05-06 | 1989-07-20 | Wolff Walsrode Ag, 3030 Walsrode, De | Heating and power station and method for generating heat energy in the form of steam and generating electrical energy |
| DE3926964A1 (en) * | 1989-08-16 | 1991-02-21 | Siemens Ag | METHOD FOR REDUCING THE CARBON DIOXIDE CONTENT OF THE EXHAUST GAS FROM A GAS AND STEAM TURBINE POWER PLANT AND POST-WORKING POWER PLANT |
-
1991
- 1991-05-25 DE DE19914117191 patent/DE4117191C2/en not_active Expired - Fee Related
-
1992
- 1992-05-21 AU AU16946/92A patent/AU1694692A/en not_active Abandoned
- 1992-05-21 DK DK92910154T patent/DK0586425T3/en active
- 1992-05-21 EP EP92910154A patent/EP0586425B1/en not_active Expired - Lifetime
- 1992-05-21 WO PCT/DE1992/000414 patent/WO1992021860A1/en not_active Ceased
- 1992-05-21 ES ES92910154T patent/ES2121013T3/en not_active Expired - Lifetime
- 1992-05-21 DE DE59209451T patent/DE59209451D1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012012683A1 (en) * | 2012-06-27 | 2014-01-02 | RERUM COGNITIO Institut GmbH | Method for electric power generation in cyclic process in two-stage combined gas and steam turbine process, involves obtaining high temperatures with positive effect of efficiency in low pressures upto material limit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0586425A1 (en) | 1994-03-16 |
| DE4117191C2 (en) | 1994-11-24 |
| WO1992021860A1 (en) | 1992-12-10 |
| DE4117191A1 (en) | 1992-12-03 |
| AU1694692A (en) | 1993-01-08 |
| ES2121013T3 (en) | 1998-11-16 |
| DE59209451D1 (en) | 1998-09-10 |
| DK0586425T3 (en) | 1999-05-03 |
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