EP0037858A1 - Steam power station with pressure-fired fluidised bed steam generator - Google Patents

Steam power station with pressure-fired fluidised bed steam generator Download PDF

Info

Publication number
EP0037858A1
EP0037858A1 EP80200338A EP80200338A EP0037858A1 EP 0037858 A1 EP0037858 A1 EP 0037858A1 EP 80200338 A EP80200338 A EP 80200338A EP 80200338 A EP80200338 A EP 80200338A EP 0037858 A1 EP0037858 A1 EP 0037858A1
Authority
EP
European Patent Office
Prior art keywords
flue gas
steam
fluidized bed
steam generator
line
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.)
Granted
Application number
EP80200338A
Other languages
German (de)
French (fr)
Other versions
EP0037858B1 (en
Inventor
Tadeusz Dipl.-Ing. Zaba
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to DE8080200338T priority Critical patent/DE3066241D1/en
Priority to EP80200338A priority patent/EP0037858B1/en
Priority to US06/245,075 priority patent/US4380147A/en
Publication of EP0037858A1 publication Critical patent/EP0037858A1/en
Application granted granted Critical
Publication of EP0037858B1 publication Critical patent/EP0037858B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0015—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type

Definitions

  • the present invention relates to a steam power plant with a pressure-fired steam generator with a fluidized bed fire according to the preamble of claim 1.
  • a major disadvantage of such steam generators is that, due to the high temperature, the tubes lying in the fluidized bed are exposed to the corrosive attack of the combustion gases and therefore have to be replaced in a relatively short time.
  • the combustion air is supplied to a steam generator 1 from a charging group 2 under pressure, for example 8-10 bar, via a main air line 3 in various ways.
  • the charging group 2 consists of a gas turbine 4 driven by the flue gases of the steam generator with an open circuit, a compressor 5 rigidly coupled to the gas turbine and a starting motor 6 which is used to start up and which is uncoupled after the stationary operating state of the system has been reached.
  • An air supply line 7 branches off from line 3, through which air is conveyed under a perforated inflow floor 8, which forms the moving bed grate.
  • the air flowing through acts as a carrier stream for the fuel particles, which are kept in suspension and form the fluidized bed.
  • Another part of the combustion air is branched off from the line 7 through a cooling air line 9 and directed at 10 into a cooling air space delimited by the outer shell 11 and inner shell 12 of the steam generator, from which it is provided in the inner shell 12 below the inflow base 8 Slots 13 exits under the inflow floor.
  • the ash discharge device 14, the coal feed device 15 and the additive feed device 16, with which an additive, such as limestone or dolomite, for admixing the sulfur compounds in a known manner, are symbolically indicated on the left side of the steam generator 1.
  • the fluidized bed is designated 17.
  • the flue gases flow in sequence in the boiler train through a pre-evaporator tube bundle 18, a superheater tube bundle 19 and an evaporator tube bundle 20.
  • the steam collector 21 is arranged outside the flue gas stream in the flow direction of the boiler water after the evaporator tube bundle 20.
  • the steam excreted in the steam collector 21 enters the superheater tube bundle 19 and further through a steam line 22 into a steam turbine 24 of a steam turbine generator group 23, the generator 25 of which supplies the mains current.
  • the exhaust steam from the turbine 24 passes into a condenser 26, from which a feed water pump 27 conveys the condensate into the pre-evaporator heating bundle 18.
  • a bypass flue gas duct is provided, which is separated from the flue gas duct by partitions 28, 29 and 30, which form three short ducts.
  • a bypass flow control flap 31, 32 and 33 in each of these channels enables the flue gas flow through the individual sections of the flue gas flue with the three steam heating surfaces 18, 19 and 20 individually or combined in fine stages to control or regulate and, in cooperation with other regulators described below, to fine-tune the steam output and the temperature of the flue gases after the boiler to the respective requirements.
  • the flue gases pass from the steam generator 1 through a flue gas discharge line 34 into a cyclone dust separator 35, in which a large part of the unburned dust-like components is separated out. These are discharged with part of the flue gases via a dust return line 36 into an injector 37, which blows them into the fluidized bed through a dust introduction line 38.
  • a part of the remaining, partially dedusted flue gas passes into a secondary flow control circuit, consisting of a flue gas bypass line 39, 40, a flue gas bypass flap 41, a flue gas cooler 42 and a fan 43:
  • a flue gas bypass line 39, 40 When the flap 41 is open, the flue gas from the fan 43 is partly mentioned in the injector 37 Dust injection is conveyed via line 38 into the fluidized bed and partly into a flue gas / air mixer 44.
  • flue gas is mixed with combustion air branched off from line 3 in such a ratio and introduced through line 45 under the fluidized bed that the fluidized bed temperature is kept at an optimal value in connection with the other control options.
  • the main coolant for the flue gas cooler 42 is water, which, because of the relatively high flue gas temperature, which can still be 500 ° C., for example, is used to generate steam, for example working or heating steam or else to overheat the turbine steam can be.
  • a secondary bypass line 46 branches off from the flue gas bypass line 39, 140 in front of the flue gas bypass flap 41, in which a secondary bypass control flap 47 is provided and which opens in front of the fan 43 into the bypass line 40, via which the majority of the flue gas bypass branched off for temperature control in the fluidized bed normally flows.
  • the steam output can be varied or varied within a wide range . be managed.
  • the means with which the objectives of the invention are achieved thus consist of the three control flaps 31, 32, 33 in the steam generator, the flue gas bypass lines 39, 40, 46 and the flaps 41, 47 provided in these lines, as well as the cooler 42 and the fan 43.
  • the coolant flow through the cooler and the delivery capacity of the fan, the fluidized bed can be kept at an allowable temperature by avoiding the disadvantages that are associated with cooling pipes laid in the fluidized bed by the heat dissipation in the cooler 42 and the heat transferred to the heating surfaces in the steam boiler Optimally adapt the heat to the required steam output.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

Dampfkraftwerk mit druckgefeuertem Dampferzeuger (1) mit Fließbettfeuerung und durch die Rauchgase der Feuerung angetriebener Ladegruppe (2), wobei die Kesselheizflächen (18, 19, 20) ausschließlich außerhalb der Wirbelschicht (17) des Fließbettes angeordnet und im Dampferzeuger (1) Nebenstromregelklappen (31, 32, 33) zur Steuerung und Regelung der Dampfleistung vorgesehen sind. Zu diesem Zweck und zur Kühlung der Wirbelschicht ist außerdem eine Rauchgasnebenstromleitung (39, 40) mit mindestens einer Nebenstromregelklappe (41), einem Rauchgaskühler (42) und einem Ventilator (43) vorhanden.Steam power plant with a pressure-fired steam generator (1) with fluidized bed firing and a charging group (2) driven by the flue gases of the firing, the boiler heating surfaces (18, 19, 20) being arranged exclusively outside the fluidized bed (17) of the fluidized bed and in the steam generator (1) bypass flow control flaps (31 , 32, 33) are provided for controlling and regulating the steam output. For this purpose and for cooling the fluidized bed, there is also a flue gas bypass line (39, 40) with at least one bypass control flap (41), a flue gas cooler (42) and a fan (43).

Description

Die vorliegende Erfindung betrifft ein Dampfkraftwerk mit druckgefeuertem Dampferzeuger mit Fliessbettfeueruhg nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a steam power plant with a pressure-fired steam generator with a fluidized bed fire according to the preamble of claim 1.

Bei den bekannten druckgefeuerten Dampferzeugern mit Fliessbettfeuerung wird die Verbrennungswärme grösstenteils auf die in der Wirbelschicht der Fliessbettfeuerüng liegenden Wasserrohre übertragen; um eine Kühlung der Wirbelschicht und die optimale Verbrennungstemperatur zu erhalten.In the known pressure-fired steam generators with fluid bed firing, the heat of combustion is largely transferred to the water pipes in the fluidized bed of the fluid bed firing; to keep the fluidized bed cool and the optimal combustion temperature.

Ein grosser Nachteil solcher Dampferzeuger liegt darin, dass infolge der hohen Temperatur die in der Wirbelschicht lie- 'genden Rohre dem korrosiven Angriff der Verbrennungsgase ausgesetzt sind und daher in verhältnismässig kurzer Zeit erneuert werden müssen.A major disadvantage of such steam generators is that, due to the high temperature, the tubes lying in the fluidized bed are exposed to the corrosive attack of the combustion gases and therefore have to be replaced in a relatively short time.

Statt durch solche in die Wirbelschicht verlegte Kühlrohre kann die Verbrennungswärme der Wirbelschicht auch durch einen erhöhten Luftdurchsatz entzogen werden. Dies bringt aber den Nachteil mit sich, dass dann die Turbine ein grösseres Rauchgasvolumen zu verarbeiten hat und die Ladegruppe ebenso wie der Filter dementsprechend grösser dimensioniert werden muss. Mit der vorliegenden, im kennzeichnenden Teil des Patentanspruchs 1 definierten Erfindung sollen diese Nachteile vermieden und darüber hinaus ein Dampfkraftwerk mit druckgefeuertem Dampferzeuger geschaffen werden, das hohe Ansprüche in Bezug auf guten Wirkungsgrad, gute Regelbarkeit und wirtschaftlichen Betrieb erfüllt.Instead of such cooling pipes laid in the fluidized bed, the heat of combustion of the fluidized bed can also be removed by increasing the air throughput. However, this has the disadvantage that the turbine then has to process a larger volume of flue gas and the charging group and the filter have to be dimensioned accordingly. With the present invention defined in the characterizing part of patent claim 1, these disadvantages are to be avoided and, moreover, a steam power plant with a pressure-fired steam generator is to be created which meets high demands with regard to good efficiency, good controllability and economical operation.

Die Erfindung wird im folgenden unter Bezugnahme auf das in der Zeichnung dargestellte Ausführungsbeispiel näher beschrieben.The invention is described below with reference to the embodiment shown in the drawing.

Einem Dampferzeuger l wird die Verbrennungsluft von einer Ladegruppe 2 unter Druck, beispielsweise 8 - 10 bar, über eine Lufthauptleitung 3 auf verschiedenen Wegen zugeführt. Die Ladegruppe 2 besteht aus einer von den Rauchgasen des Dampferzeugers angetriebenen Gasturbine 4 mit offenem Kreislauf, einem mit der Gasturbine starr gekuppelten Verdichter 5 und einem zum Anfahren dienenden Startmotor 6, der nach Erreichen des stationären Betriebszustandes der Anlage abgekuppelt wird.The combustion air is supplied to a steam generator 1 from a charging group 2 under pressure, for example 8-10 bar, via a main air line 3 in various ways. The charging group 2 consists of a gas turbine 4 driven by the flue gases of the steam generator with an open circuit, a compressor 5 rigidly coupled to the gas turbine and a starting motor 6 which is used to start up and which is uncoupled after the stationary operating state of the system has been reached.

Von der Leitung 3 zweigt eine Luftzuführleitung 7 ab, durch die Luft unter einen gelochten Anströmboden 8 gefördert wird, der den Fliessbettrost bildet. Die durchströmende Luft wirkt als Trägerstrom für die Brennstoffpartikel, die damit in Schwebe gehalten werden und die Wirbelschicht bilden. Ein weiterer Teil der Verbrennungsluft wird aus der Leitung 7 durch eine Kühlluftleitung 9 abgezweigt und bei 10 in einen vom Aussenmantel 11 und Innenmantel 12 des Dampferzeugers begrenzten Kühlluftraum geleitet, aus dem sie durch unterhalb des Anströmbodens 8 im Innenmantel 12 vorgesehene Schlitze 13 unter dem Anströmboden austritt.An air supply line 7 branches off from line 3, through which air is conveyed under a perforated inflow floor 8, which forms the moving bed grate. The air flowing through acts as a carrier stream for the fuel particles, which are kept in suspension and form the fluidized bed. Another part of the combustion air is branched off from the line 7 through a cooling air line 9 and directed at 10 into a cooling air space delimited by the outer shell 11 and inner shell 12 of the steam generator, from which it is provided in the inner shell 12 below the inflow base 8 Slots 13 exits under the inflow floor.

Symbolisch angedeutet sind an der linken Seite des Dampferzeugers 1 die Aschenaustrageinrichtung 14, die Kohlezuführeinrichtung 15 und die Additivzuführeinrichtung 16, mit der in bekannter Weise der Kohlenwirbelschicht ein Zusatz, wie beispielsweise Kalkstein oder Dolomit, zur Neutralisierung der Schwefelverbindungen beigemischt wird. Die Wirbelschicht ist mit 17 bezeichnet.The ash discharge device 14, the coal feed device 15 and the additive feed device 16, with which an additive, such as limestone or dolomite, for admixing the sulfur compounds in a known manner, are symbolically indicated on the left side of the steam generator 1. The fluidized bed is designated 17.

Die Rauchgase durchströmen im Kesselzug der Reihe nach ein Vorverdampferrohrbündel 18, ein Ueberhitzerrohrbündel 19 und ein Verdampferrohrbündel 20. Der Dampfsammler 21 ist ausserhalb des Rauchgaszuges in Flussrichtung des Kessel- - wassers nach dem Verdampferrohrbündel 20 angeordnet. Der im Dampfsammler 21 ausgeschiedene Dampf gelangt in das Ueberhitzerrohrbündel 19 und weiter durch eine Dampfleitung 22 in eine Dampfturbine 24 einer Dampfturbogeneratorgruppe 23, deren Generator 25 den Netzstrom liefert. Der Abdampf aus der Turbine 24 gelangt in einen Kondensator 26, aus dem eine Speisewasserpumpe 27 das.Kondensat in das Vorverdampferheizbündel 18 fördert.The flue gases flow in sequence in the boiler train through a pre-evaporator tube bundle 18, a superheater tube bundle 19 and an evaporator tube bundle 20. The steam collector 21 is arranged outside the flue gas stream in the flow direction of the boiler water after the evaporator tube bundle 20. The steam excreted in the steam collector 21 enters the superheater tube bundle 19 and further through a steam line 22 into a steam turbine 24 of a steam turbine generator group 23, the generator 25 of which supplies the mains current. The exhaust steam from the turbine 24 passes into a condenser 26, from which a feed water pump 27 conveys the condensate into the pre-evaporator heating bundle 18.

Parallel zum Rauchgaszug, in dem sich die drei Dämpfheizflächen 18, 19, 20 befinden, ist ein Nebenstromrauchgaskanal vorgesehen, der gegenüber dem Rauchgaszug durch Trennwände 28, 29 und 30 separiert ist,die drei kurze Kanäle bilden. Je eine Nebenstromregelklappe 31, 32 und 33 in diesen Kanälen ermöglichen es, den Rauchgasstrom durch die einzelnen Abschnitte des Rauchgaszuges mit den drei Dampfheizflächen 18, 19 und 20 einzeln oder kombiniert feinstufig zu steuern oder zu regeln und damit im Zusammenwirken mit weiteren, im folgenden beschriebenen Regelorganen die Dampfleistung sowie die Temperatur der Rauchgase nach dem Kessel dem jeweiligen Bedarf feinstufig anzupassen.Parallel to the flue gas duct, in which the three steam heating surfaces 18, 19, 20 are located, a bypass flue gas duct is provided, which is separated from the flue gas duct by partitions 28, 29 and 30, which form three short ducts. A bypass flow control flap 31, 32 and 33 in each of these channels enables the flue gas flow through the individual sections of the flue gas flue with the three steam heating surfaces 18, 19 and 20 individually or combined in fine stages to control or regulate and, in cooperation with other regulators described below, to fine-tune the steam output and the temperature of the flue gases after the boiler to the respective requirements.

Aus dem Dampferzeuger 1 gelangen die Rauchgase durch eine Rauchgasableitung 34 in einen Zyklonstaubabscheider 35, in dem ein grosser Teil der unverbrannten staubförmigen Bestandteile ausgeschieden wird. Diese werden mit einem Teil der Rauchgase über eine Staubrückführleitung 36 in einen Injektor 37 abgeführt, der sie durch eine Staubeinführleitung 38 in die Wirbelschicht einbläst.The flue gases pass from the steam generator 1 through a flue gas discharge line 34 into a cyclone dust separator 35, in which a large part of the unburned dust-like components is separated out. These are discharged with part of the flue gases via a dust return line 36 into an injector 37, which blows them into the fluidized bed through a dust introduction line 38.

Vom restlichen, teilentstaubten Rauchgas gelangt ein Teil weiter in einen Nebenstromregelkreis, bestehend aus einer Rauchgasnebenstromleitung 39, 40, einer Rauchgasnebenstromklappe 41, einem Rauchgaskühler 42 und einem Ventilator 43: Bei offener Klappe 41 wird das Rauchgas vom Ventilator 43 teils in den Injektor 37 zur erwähnten Staubeinblasung über die Leitung 38 in die Wirbelschicht und teils in einen Rauchgas/Luft-Mischer 44 gefördert. In letzterem wird Rauchgas mit aus der Leitung 3 abgezweigter Verbrennungsluft in einem solchen Verhältnis gemischt und durch eine Leitung 45 unter das Fliessbett eingeführt, dass die Wirbelschichttemperatur in Verbindung mit den anderen Regelüngsmöglichkeiten auf einem jeweils optimalen Wert gehalten wird.A part of the remaining, partially dedusted flue gas passes into a secondary flow control circuit, consisting of a flue gas bypass line 39, 40, a flue gas bypass flap 41, a flue gas cooler 42 and a fan 43: When the flap 41 is open, the flue gas from the fan 43 is partly mentioned in the injector 37 Dust injection is conveyed via line 38 into the fluidized bed and partly into a flue gas / air mixer 44. In the latter, flue gas is mixed with combustion air branched off from line 3 in such a ratio and introduced through line 45 under the fluidized bed that the fluidized bed temperature is kept at an optimal value in connection with the other control options.

Als Kühlmittel für den Rauchgaskühler 42 kommt hauptsächlich Wasser in Frage, wobei dieses wegen der verhältnismässig hohen Rauchgastemperatur, die z.B. noch 500°C betragen kann, zur Erzeugung von Dampf, z.B. Arbeits- oder Heizdampf oder aber auch zur Ueberhitzung des Turbinendampfes, verwendet werden kann.The main coolant for the flue gas cooler 42 is water, which, because of the relatively high flue gas temperature, which can still be 500 ° C., for example, is used to generate steam, for example working or heating steam or else to overheat the turbine steam can be.

Von der Rauchgasnebenstromleitung 39, 140 zweigt vor der Rauchgasnebenstromklappe 41 eine sekundäre Nebenstromleitung 46 ab, in der eine sekundäre Nebenstromregelklappe 47 vorgesehen ist und die vor dem Ventilator 43 in die Nebenstromleitung 40 mündet, über die normalerweise der Hauptteil des für die Temperaturregelung im Wirbelbett abgezweigten Rauchgasnebenstromes fliesst.A secondary bypass line 46 branches off from the flue gas bypass line 39, 140 in front of the flue gas bypass flap 41, in which a secondary bypass control flap 47 is provided and which opens in front of the fan 43 into the bypass line 40, via which the majority of the flue gas bypass branched off for temperature control in the fluidized bed normally flows.

Mit den zwei vorerwähnten Nebenstromregelkreisen und den drei Nebenstromregelklappen 31, 32 und 33 im Dampferzeuger 1 sowie durch entsprechende Dosierung der in den Injektor 37 und in den Rauchgas/Luft-Mischer 44 abzuzweigenden abgekühlten Rauchgase bzw. Verbrennungsluft kann die Dampfleistung in einem weiten Bereich variiert bzw. geregelt werden.With the two aforementioned bypass flow control circuits and the three bypass flow control valves 31, 32 and 33 in the steam generator 1 and by appropriate metering of the cooled flue gases or combustion air to be branched off into the injector 37 and the flue gas / air mixer 44, the steam output can be varied or varied within a wide range . be managed.

Der Teil der Rauchgase, der hinter dem Zyklonabscheider 35 nach der Abzweigung der Leitung 39 noch übrigbleibt, naturgemäss der Hauptteil der im Dampferzeuger 1 gebildeten Rauchgase, gelangt nach Passieren eines Elektrofilters 48, aus dem der dort abgeschiedene Reststaub durch eine Staubableitung 49 entfernt wird, über eine Turbinenrauchgaszuleitung 50 zur Arbeitsleistung in die Gasturbine 4.The part of the flue gases that remains behind the cyclone separator 35 after the branching of the line 39, naturally the main part of the flue gases formed in the steam generator 1, passes over an electrostatic filter 48, from which the residual dust separated there is removed by a dust discharge line 49 a turbine smoke gas supply line 50 for work performance in the gas turbine 4.

Wie bei allen Dampferzeugern mit Fliessbettfeuerung werden die Heizflächen des Dampfsystems infolge des hohen Staubgehalts der Rauchgase nach der Wirbelschicht verhältnismässig rasch verschmutzen, so dass auch für diese Anlage eine Reinigungseinrichtung, beispielsweise nach dem Prinzip des Abklopfens oder Kugelstrahlens, vorgesehen werden muss. Die Mittel, mit denen die Ziele der Erfindung erreicht werden, bestehen also aus den drei Regelklappen 31, 32, 33 im Dampferzeuger, den Rauchgasnebenstromleitungen 39, 40, 46 und den in diesen Leitungen vorgesehenen Klappen 41, 47 sowie dem Kühler 42 und dem Ventilator 43. Durch die Stellung der . Klappen, den Kühlmitteldurchfluss durch den Kühler und die Förderleistung des Ventilators lässt sich die Wirbelschicht unter Vermeidung der Nachteile, die in der Wirbelschicht verlegte Kühlrohre mit sich bringen, durch die Wärmeabfuhr im Kühler 42 auf einer zulässigen Temperatur halten und die auf die Heizflächen im Dampfkessel übertragene Wärme der jeweils erforderlichen Dampfleistung optimal anpassen.As with all steam generators with fluid bed firing, the heating surfaces of the steam system will become soiled relatively quickly due to the high dust content of the flue gases after the fluidized bed, so that a cleaning device must also be provided for this system, for example based on the principle of tapping or shot peening. The means with which the objectives of the invention are achieved thus consist of the three control flaps 31, 32, 33 in the steam generator, the flue gas bypass lines 39, 40, 46 and the flaps 41, 47 provided in these lines, as well as the cooler 42 and the fan 43. By the position of the. Flaps, the coolant flow through the cooler and the delivery capacity of the fan, the fluidized bed can be kept at an allowable temperature by avoiding the disadvantages that are associated with cooling pipes laid in the fluidized bed by the heat dissipation in the cooler 42 and the heat transferred to the heating surfaces in the steam boiler Optimally adapt the heat to the required steam output.

B e z e i c h n u n g s l i s t eB e z e i c h n u n g s l i s t e

  • 1 Dampferzeuger1 steam generator
  • 2 Ladegruppe2 loading group
  • 3 Lufthauptleitung3 main air duct
  • 4 Gasturbine4 gas turbine
  • 5 Verdichter5 compressors
  • 6 Startmotor6 start motor
  • 7 Luftzuführleitung7 air supply line
  • 8 Anströmboden8 inflow floor
  • 9 Kühlluftleitung9 Cooling air line
  • 10 Eintrittsstelle der Kühlluft10 entry point of the cooling air
  • 11 Aussenmantel des Dampferzeugers11 outer jacket of the steam generator
  • 12 Innenmantel des Dampferzeugers12 Inner jacket of the steam generator
  • 13 Schlitze im Innenmantel 1213 slots in the inner jacket 12
  • 14 Aschenaustrageinrichtung14 ash discharge device
  • 15 Kohlezuführeinrichtung15 coal supply device
  • 16 Additivzuführeinrichtung16 Additive feed device
  • 17 Wirbelschicht17 fluidized bed
  • 18 Vorverdampferrohrbündel18 pre-evaporator tube bundles
  • 19 Ueberhitzerrohrbündel19 superheater tube bundles
  • 20 Verdampferrohrbündel20 evaporator tube bundles
  • 21 Dampfsammler21 steam collectors
  • 22 Dampfleitung22 steam pipe
  • 23 Dampfturbogeneratorgruppe23 steam turbine generator group
  • 24 Dampfturbine24 steam turbine
  • 25 Generator25 generator
  • 26 Kondensator26 capacitor
  • 27 Speisewasserpumpe27 Feed water pump
  • 28 Trennwand28 partition
  • 29 Trennwand29 partition
  • 30 Trennwand30 partition
  • 31 Nebenstromregelklappe31 Bypass flow control valve
  • 32 Nebenstromregelklappe32 Bypass flow control valve
  • 33 Nebenstromregelklappe33 Bypass flow control valve
  • 34 Rauchgasableitung34 Flue gas discharge
  • 35 Zyklonstaubabscheider35 cyclone dust separators
  • 36 Staubrückführleitung36 Dust return line
  • 37 Injektor37 injector
  • 38 Staubeinführleitung38 dust introduction line
  • 39, 40 Rauchgasnebenstromleitung39, 40 flue gas bypass
  • 41 Rauchgasnebenstromklappe41 flue gas bypass valve
  • 42 Rauchgaskühler42 flue gas cooler
  • 43 Ventilator43 fan
  • 44 Rauchgas/Luft-Mischer44 flue gas / air mixer
  • 45 Leitung45 line
  • 46 Sekundäre Rauchgasnebenstromleitung46 Secondary flue gas bypass
  • 47 Sekundäre Rauchgasnebenstromregelklappe47 Secondary flue gas bypass control valve
  • 48 Elektrofilter48 electrostatic precipitators
  • 49 Staubableitung49 Dust removal
  • 50 Turbinenrauchgaszuleitung50 turbine flue gas feed line

Claims (2)

1. Dampfkraftwerk mit druckgefeuertem Dampferzeuger mit Fliessbettfeuerung, mit einer von den Rauchgasen des Dampferzeugers angetriebenen, aus einer Gasturbine und einem Verdichter bestehenden Ladegruppe, die die verdichtete Verbrennungsluft unter das Fliessbett fördert, um auf diesem eine Wirbelschicht zu bilden, mit Einrichtungen zur Abscheidung, Filterung und Abführung der im Rauchgas enthaltenen staubförmigen Verunreinigungen sowie zur Steuerung und Regelung der Dampfleistung für die Dampfturbogeneratorgruppe, dadurch gekennzeichnet, dass alle Kesselheizflächen (18, 19, 20) ausserhalb der Wirbelschicht (17) des Fliessbettes angeordnet sind und dass die Einrichtungen zur Steuerung und Regelung der Dampfleistung aus im Dampferzeuger (1) angeordneten Nebenstromregelklappen (31, 32, 33) für das Rauchgas und aus einer nach dem Dampferzeuger (1) aus der Rauchgasableitung (34) abzweigenden Rauchgasnebenstromleitung (39, 40) bestehen, in der eine Rauchgasnebenstromklappe (41), ein Rauchgaskühler (42) und ein Ventilator (43) angeordnet sind und die unter dem Fliessbett in den.Dampferzeuger (1) einmündet.1. Steam power plant with a pressure-fired steam generator with fluidized bed combustion, with a charging group driven by the smoke gases of the steam generator, consisting of a gas turbine and a compressor, which conveys the compressed combustion air under the fluidized bed in order to form a fluidized bed thereon, with devices for separation, filtering and removal of the dust-like impurities contained in the flue gas and for controlling and regulating the steam output for the steam turbine generator group, characterized in that all boiler heating surfaces (18, 19, 20) are arranged outside the fluidized bed (17) of the fluid bed and that the devices for controlling and regulating the steam output consists of bypass flow control valves (31, 32, 33) for the flue gas arranged in the steam generator (1) and a flue gas bypass line (39, 40) branching off after the steam generator (1) from the flue gas discharge line (34), in which a flue gas bypass valve (41 ), a flue gas cooler (42) and a fan (43) are arranged and which opens under the fluidized bed into the steam generator (1). 2. Dampfkraftwerk nach Anspruch 1, dadurch gekennzeichnet, dass eine sekundäre Rauchgasnebenstromleitung (46) vorgesehen ist, die eine Stelle der Rauchgasnebenstromleitung (39, 40) vor der Rauchgasnebenstromklappe (41) mit einer Stelle der Rauchgasnebenstromleitung (39, 40) nach dem Rauchgaskühler (42) verbindet und eine sekundäre Rauchgasnebenstromklappe (47) enthält, dass aus der .Rauchgasnebenstromleitung (39, 40) nach dem Ventilator . (43) eine Rauchgasabzweigung in einen Injektor (37) zur Einblasung von aus der Rauchgasableitung (34) abgeschiedenen festen unverbrannten Bestandteilen in das Wirbelbett vorhanden ist, und dass in der Rauchgasnebenstromleitung (39, 40) vor ihrer Einführung unter das Fliessbett des Dampferzeugers (1) ein Rauchgas/Luft-Mischer (44) vorgesehen ist, der mit einer Abzweigung aus der Lufthauptleitung (3) in Verbindung steht.2. Steam power plant according to claim 1, characterized in that a secondary flue gas bypass line (46) is provided which has a point of the flue gas bypass line (39, 40) in front of the flue gas bypass valve (41) with a point of the flue gas bypass line (39, 40) after the flue gas cooler ( 42) connects and a secondary flue gas bypass valve (47) contains that from the .Flue gas bypass line (39, 40) after the fan. (43) there is a flue gas branch into an injector (37) for blowing solid unburned constituents separated from the flue gas discharge line (34) into the fluidized bed, and that the flue gas bypass line (39, 40) before it is inserted under the fluidized bed of the steam generator (1 ) a flue gas / air mixer (44) is provided, which is connected to a branch from the main air line (3).
EP80200338A 1980-04-16 1980-04-16 Steam power station with pressure-fired fluidised bed steam generator Expired EP0037858B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8080200338T DE3066241D1 (en) 1980-04-16 1980-04-16 Steam power station with pressure-fired fluidised bed steam generator
EP80200338A EP0037858B1 (en) 1980-04-16 1980-04-16 Steam power station with pressure-fired fluidised bed steam generator
US06/245,075 US4380147A (en) 1980-04-16 1981-03-18 Steam power plant containing pressure-fired steam generator with fluidized bed firing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80200338A EP0037858B1 (en) 1980-04-16 1980-04-16 Steam power station with pressure-fired fluidised bed steam generator

Publications (2)

Publication Number Publication Date
EP0037858A1 true EP0037858A1 (en) 1981-10-21
EP0037858B1 EP0037858B1 (en) 1984-01-25

Family

ID=8186987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200338A Expired EP0037858B1 (en) 1980-04-16 1980-04-16 Steam power station with pressure-fired fluidised bed steam generator

Country Status (3)

Country Link
US (1) US4380147A (en)
EP (1) EP0037858B1 (en)
DE (1) DE3066241D1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002755A1 (en) * 1985-10-23 1987-05-07 A. Ahlstrom Corporation Pressurized fluidized bed apparatus
WO1988005494A1 (en) * 1987-01-22 1988-07-28 Saarbergwerke Aktiengesellschaft Coal combustion with a fluidized incineration bed
EP0444927A2 (en) * 1990-03-01 1991-09-04 Foster Wheeler Energy Corporation Fluidized bed steam temperature enhancement system
EP0475029A2 (en) * 1990-09-13 1992-03-18 Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft Fluidized bed furnace with a stationary bed
RU2490543C2 (en) * 2011-10-25 2013-08-20 Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук Catalytic reactor - steam generator
RU2527238C1 (en) * 2013-05-24 2014-08-27 Общество с ограниченной ответственностью "Уникат" Organic waste and oil decontamination method

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU563279B2 (en) * 1982-06-22 1987-07-02 Lawrence Waldemar Ihnativ Processing waste materials
US4936098A (en) * 1987-05-13 1990-06-26 Gibbs & Hill, Inc. Utilization of circulating fluidized bed combustors for compressed air energy storage application
SE464715B (en) * 1987-12-02 1991-06-03 Asea Stal Ab PROVIDED TO REGULATE A PFBC PLANT FOR OPERATING DAMAGE IN A GAS TURBIN FITTING AND A PFBC PLANT WITH EQUIPMENT BEFORE SUCH REGULATION
SE459988B (en) * 1987-12-23 1989-08-28 Abb Stal Ab COULD COOL BEDDING MATERIAL IN A PFBC POWER PLANT AND PFBC POWER PLANT WITH A REFRIGERATOR CONNECTED TO THE BEDDER
US5279356A (en) * 1988-12-21 1994-01-18 American Hydrotherm Corporation Waste heat recovery system
FI85417C (en) * 1989-12-28 1992-04-10 Ahlstroem Oy A REQUIREMENTS FOR THE ADJUSTMENT OF TEMPERATURES IN A REACTOR WITH FLUIDISERAD BAEDD.
SE9101901D0 (en) * 1991-06-20 1991-06-20 Abb Carbon Ab SET AT PFBC PLANT
JP3209775B2 (en) * 1992-01-10 2001-09-17 株式会社日立製作所 Combined cycle power plant and its operation method
US5666801A (en) * 1995-09-01 1997-09-16 Rohrer; John W. Combined cycle power plant with integrated CFB devolatilizer and CFB boiler
US5953898A (en) * 1997-02-26 1999-09-21 Foster Wheeler Energia Oy Power generation method including control of temperature of flue gases entering a high temperature ceramic filter
US8858223B1 (en) * 2009-09-22 2014-10-14 Proe Power Systems, Llc Glycerin fueled afterburning engine
JP2013092053A (en) * 2011-10-24 2013-05-16 Mitsubishi Heavy Ind Ltd Liquefied gas processing system, control method thereof, liquefied gas carrying vessel including the same, and liquefied gas storage facility including the same
PT2834476T (en) * 2012-03-19 2020-03-05 Enea Agenzia Naz Per Le Nuove Tecnologie Lenergia E Lo Sviluppo Economico Sostenibile Back-up boiler system for a solar thermal power plant based on molten salt technology, a solar thermal power plant and a method for operating a solar thermal power plant
JP5711794B2 (en) * 2013-09-03 2015-05-07 月島機械株式会社 Pressurized fluidized incinerator equipment and control method of pressurized fluidized incinerator equipment
GB201509651D0 (en) * 2015-06-03 2015-07-15 Castle Europ Ltd Turbine system and method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB772991A (en) * 1955-09-07 1957-04-17 La Mont Int Ass Ltd Improvements in and relating to forced recirculation steam generators
FR2238898A1 (en) * 1973-07-25 1975-02-21 Foster Wheeler Corp
US3903846A (en) * 1971-05-04 1975-09-09 Douglas Ernest Elliott Fuel-burning heater
DE2424394A1 (en) * 1974-05-20 1975-12-04 Foster Wheeler Corp Steam-generator with heat-exchanger and fluidised beds - fuel beds have air passage for temp. regulation
GB1513795A (en) * 1976-04-14 1978-06-07 Coal Ind Boilers
DE2804073A1 (en) * 1977-01-31 1978-08-10 William Benedict Johnson FLUIDED BED COMBUSTION AND HEAT TRANSFER DEVICE AND METHOD FOR OPERATING SUCH DEVICE
GB2030689A (en) * 1978-08-04 1980-04-10 Energy Equip Method and means for controlling the operation of fluidised bed combustion apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1135935A (en) * 1965-12-08 1968-12-11 Humphreys & Glasgow Ltd Process and apparatus for the recovery of waste heat
SE406366B (en) * 1977-06-23 1979-02-05 Stal Laval Turbin Ab SWEET BURNING CHAMBER
US4287023A (en) * 1979-08-23 1981-09-01 Phillips Petroleum Co. Waste heat recovery

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB772991A (en) * 1955-09-07 1957-04-17 La Mont Int Ass Ltd Improvements in and relating to forced recirculation steam generators
US3903846A (en) * 1971-05-04 1975-09-09 Douglas Ernest Elliott Fuel-burning heater
FR2238898A1 (en) * 1973-07-25 1975-02-21 Foster Wheeler Corp
DE2424394A1 (en) * 1974-05-20 1975-12-04 Foster Wheeler Corp Steam-generator with heat-exchanger and fluidised beds - fuel beds have air passage for temp. regulation
GB1513795A (en) * 1976-04-14 1978-06-07 Coal Ind Boilers
DE2804073A1 (en) * 1977-01-31 1978-08-10 William Benedict Johnson FLUIDED BED COMBUSTION AND HEAT TRANSFER DEVICE AND METHOD FOR OPERATING SUCH DEVICE
GB2030689A (en) * 1978-08-04 1980-04-10 Energy Equip Method and means for controlling the operation of fluidised bed combustion apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BRENNSTOFF-WARME-KRAFT, vol. 30, Nr. 11, November 1978 VDI Verlag, Düsseldorf, DE H.D. SCHILLING "Die Wirbelschicht-feuerung-Einsatzmöglichkeiten für die Strom- und Wärmeerzeugung aus Kohle", Seiten 425-427. *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002755A1 (en) * 1985-10-23 1987-05-07 A. Ahlstrom Corporation Pressurized fluidized bed apparatus
WO1988005494A1 (en) * 1987-01-22 1988-07-28 Saarbergwerke Aktiengesellschaft Coal combustion with a fluidized incineration bed
EP0444927A2 (en) * 1990-03-01 1991-09-04 Foster Wheeler Energy Corporation Fluidized bed steam temperature enhancement system
EP0444927A3 (en) * 1990-03-01 1992-05-06 Foster Wheeler Energy Corporation Fluidized bed steam temperature enhancement system
EP0475029A2 (en) * 1990-09-13 1992-03-18 Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft Fluidized bed furnace with a stationary bed
EP0475029A3 (en) * 1990-09-13 1992-09-16 Deutsche Babcock Energie- Und Umwelttechnik Aktiengesellschaft Fluidized bed furnace with a stationary bed
RU2490543C2 (en) * 2011-10-25 2013-08-20 Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук Catalytic reactor - steam generator
RU2527238C1 (en) * 2013-05-24 2014-08-27 Общество с ограниченной ответственностью "Уникат" Organic waste and oil decontamination method
WO2014189404A1 (en) * 2013-05-24 2014-11-27 Общество с ограниченной ответственностью "Уникат" Method for the detoxification of organic wastes and oil

Also Published As

Publication number Publication date
US4380147A (en) 1983-04-19
DE3066241D1 (en) 1984-03-01
EP0037858B1 (en) 1984-01-25

Similar Documents

Publication Publication Date Title
EP0037858B1 (en) Steam power station with pressure-fired fluidised bed steam generator
EP0558899B1 (en) System for using the heat of the exhaust gases from a coal-fired boiler
DE3428041A1 (en) AIR STORAGE GAS TURBINE POWER PLANT WITH FLUID BED FIRING
EP0648323B1 (en) Steam power plant for generating electric power
EP2545337A1 (en) Method and device for producing cement clinker
EP0068301A1 (en) Steam generator with circulating atmospheric or supercharged fluidised-bed combustion
DD211358A5 (en) METHOD AND DEVICE FOR SMOKE-GASKING IN CARBOX FIRES
EP0209044B1 (en) Combined gas and steam turbine power station
EP1105624A1 (en) Gas and steam turbine unit
EP0086261A1 (en) Combination of a gas-turbine and steam-turbine cycle
EP0410118B1 (en) Combined cycle process
EP1099041A2 (en) Gas and steam turbine installation
DE3142994A1 (en) GAS TURBINE ENERGY SUPPLY SYSTEM WITH PROTECTION SYSTEM
DE69521248T2 (en) Combined power plant with a pressure reactor with a circulating fluidized bed
EP0098481B1 (en) Method for generating electric power in a combined power plant with fluidised bed combustion
WO1984002175A1 (en) Method and device for reheating desulphurated combustion gas
DE3642619A1 (en) Combined-cycle turbine power station with fluidised-bed coal gasification
EP0274637B1 (en) Steam generator with a circulating fluidised bed
DE4304124C1 (en) Method to generate electricity in combination power station - waste gas is separated from coal dust after grinding drying, and preheated fresh air transports coal dust
EP0044094A1 (en) Method for desulfurization with a fluidized bed in a power plant burning pulverized coal, and power plant working according to this method
DE4019343C2 (en)
EP0035783B1 (en) Method and means of generating electricity and heat from fuel
EP0212311A1 (en) Combined cycle power station
WO1989002564A1 (en) Controllable fluidized-bed combustion under pressure
DE3142995C2 (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE GB NL

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BBC AKTIENGESELLSCHAFT BROWN, BOVERI & CIE.

RBV Designated contracting states (corrected)

Designated state(s): CH DE GB LI NL

17P Request for examination filed

Effective date: 19820318

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE GB LI NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19840125

REF Corresponds to:

Ref document number: 3066241

Country of ref document: DE

Date of ref document: 19840301

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19840328

Year of fee payment: 5

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840724

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890331

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890430

Ref country code: CH

Effective date: 19890430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19900103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900416

GBPC Gb: european patent ceased through non-payment of renewal fee