SK8595A3 - Process and arrangment for operating a combined power station - Google Patents

Process and arrangment for operating a combined power station Download PDF

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Publication number
SK8595A3
SK8595A3 SK85-95A SK8595A SK8595A3 SK 8595 A3 SK8595 A3 SK 8595A3 SK 8595 A SK8595 A SK 8595A SK 8595 A3 SK8595 A3 SK 8595A3
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Slovakia
Prior art keywords
flue gas
fluidized bed
combustion
gas
bed furnace
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SK85-95A
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Slovak (sk)
Inventor
Franz Bauer
Horst Wetzel
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Ver Energiewerke Ag
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Priority claimed from DE4224959A external-priority patent/DE4224959A1/en
Priority claimed from DE19924236512 external-priority patent/DE4236512C2/en
Application filed by Ver Energiewerke Ag filed Critical Ver Energiewerke Ag
Publication of SK8595A3 publication Critical patent/SK8595A3/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02Plants 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
    • F01K23/06Plants 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
    • F01K23/061Plants 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 combustion in a fluidised bed
    • F01K23/062Plants 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 combustion in a fluidised bed the combustion bed being pressurised
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/205Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products in a fluidised-bed combustor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Turbines (AREA)
  • Soil Working Implements (AREA)
  • Control Of Ac Motors In General (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Control Of Eletrric Generators (AREA)
  • Hybrid Cells (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

A process and an arrangement are disclosed for operating a composite power station with a circulating fluidized bed furnace for solid fuels, in particular brown coal. The object of the invention is to recover and use combustion gas with high caloric values, i.e. to ensure an optimum post-combustion of the flue gas in order to achieve a maximum entrance temperature in the gas turbine. For that purpose, the flue gas partial current (15) is diverted in the substoichiometrically operated area of the fluidized bed furnace, upstream of the secondary air inlet (5), or the boiler is substoichiometrically operated as a carburetor and fresh air is added to the flue gas after the flue gas is cleaned and before it is subsequently burned. To implement this process, the combustion gas channel (15) is embedded in the substoichiometrically operated area of the fluidized bed furnace, upstream of the secondary air inlet (5), or the air channel is subdivised upstream of the boiler into controllable partial channels. One partial channel is embedded in the fluidized bed furnace and the other partial channel is embedded in the flue gas channel or in the post-combustion device.

Description

Vynález sa dotýka spôsobu prevádzkovania kombinovanej elektrárne s podstechiometricky pracujúcim kotlom na pevné pal i vá, najmä hnedé uhlie, obsahujúcim kúrenisko cirkulujúcou fluidnou vrstvou, pričom spaliny z kúreniska s cirkulujúcou fluidnou vrstvou, opatreného prívodom primárneho vzduchu a s prívodmi sekundárneho a terciárneho vzduchu alebo bez nich.The invention relates to a method of operating a combined-cycle power plant with a solid fuel boiler, in particular brown coal, having a stoichiometric flowing fluidized bed furnace, wherein the flue gases from the circulating fluidized bed furnace are provided with or without secondary and tertiary air intakes.

sa čistia a priamo dodatočne ohrievajú a ako horúci plyn sa pr i vádzaj ú do plynovej turbíny, a že celý koto 1 pracuj e v prevádzke podobnému splynovaču a do spalín sa po vyčistení privádza čistý vzduch na dodatočné spaľovanie.They are cleaned and directly reheated and fed to the gas turbine as hot gas, and that the whole of the koto 1 operates in a gasifier-like operation, and clean air is supplied to the flue gas after purification for re-combustion.

Doterajší stav technikyBACKGROUND OF THE INVENTION

Na dosiahnutie vyšších vstupných teplôt horúcehoTo achieve higher hot inlet temperatures

P1 ynu privádzaného do plynovej turbíny sa tento horúci plyn priamo dodatočne ohrieva v prídavnom kúrenisku čiastkovým prúdom spalín, ktorý sa odvádza z kúreniska s fluidnou vrstvou a čistí (DE-OS 36 13In the gas turbine, this hot gas is directly additionally heated in a supplementary furnace with a partial flow of flue gas which is discharged from the fluidized bed furnace and cleaned (DE-OS 36 13).

300). Tento spôsob prevádzky má síce výhodu v tom, že prevádzka kúreniska s fluidnou vrstvou a prídavného kúren i ska je zaručený iba jedným palivom, avšak jeho nevýhodou je, že v kúrenisku s cirkulačnou fluidnou vrstvou existujú vyššie náklady na zariadenie a na získavanie horľavého čiže vykurovacieho plynu na dodatočný ohrev sa vykonáva v potrubiu na palivo a po po 1 a v oblasti pr í vodu pa1 i va .300). This mode of operation has the advantage that the operation of the fluidized bed furnace and the additional furnace and the ska is guaranteed by only one fuel, but the disadvantage is that in the fluidized bed furnace there are higher equipment costs and for obtaining a combustible or fuel gas. for additional heating, it is carried out in the fuel line and after 1 and in the water supply zone.

Riadenie potrebného spaľovacieho vzduchu nie ďalších opatrení, takže je dosiahnuté iba využitia vykurovacieho plynu z čiastkového prúdu spalín.Control of the necessary combustion air, not further measures, so that only the use of fuel gas from the partial flue gas stream is achieved.

Ďalej je známe odoberanie tohoto čiastkového prúdu spalín v podstechiometricky prevádzkovanej oblasti kúreniska s fluidnou vrstvou pred prívodom sekundárneho vzduchu (EP 03 40 351). Na spaľovanie v zariadení na dodatočné spaľovanie sa k tomu potrebný čistý vzduch vedie prívodnými potrubiami vzduchu, kúreniskom s fluidnou vrstvou a čistiacimi, ako aj deliacimi zariadeniami. Tým sú tieto zariadenia zaťažené značnými objemovými prúdeniami a čistý vzduch je obohatený jemnými pevnými čiastôčkami, takže nie je možné dosiahnuť požadované výhody.Further, it is known to remove this partial flue gas stream in a substantially stoichiometric operation of the fluidized bed furnace prior to the supply of secondary air (EP 03 40 351). For combustion in the afterburning plant, the clean air required for this is led through the air supply ducts, the fluidized bed furnace and the cleaning and separating devices. As a result, these devices are loaded with considerable volumetric flows and clean air is enriched with fine solid particles, so that the desired benefits cannot be achieved.

Pre kombinovanú elektráreň s vyvíjačom, pary vykurovaným uhlím je známe tento vyvíjač pary s podstechiometricky prevádzkovaným kúreniskom s fluidnou vrstvou opatriť ďalej zaradeným integrovaným odlučovačom prachu a kotlom s taviacou komorou opatreným horákmi (DE-OS 36 44 030). Tento vyvíjač pary však má nevýhodu v tom, že iba hrubo vyčistené spaliny so všetkými škodlivými látkami (napríklad alkáliami) sa síce v taviacej komore zbavuje popola, avšak škodlivé látky sa stanú úplne prchavými. Tieto škodlivé látky spôsobujú poškodenie plynovej turbíny. Navyše je aj tu celý prúd spalín a čistého plynu vedený všetkými zariadeniami.For a combined power plant with a coal-fired steam generator, it is known to provide the fluidized-bed furnace with a substoichiometric operation of a fluidized bed furnace with an integrated dust separator and a boiler with a melting chamber equipped with burners (DE-OS 36 44 030). However, this steam generator has the disadvantage that only roughly cleaned flue gas with all harmful substances (e.g. alkali) is free of ash in the melting chamber, but the harmful substances become completely volatile. These harmful substances cause damage to the gas turbine. In addition, the entire flue gas and clean gas flow is conducted through all the devices.

Pre kombinovaný proces s plynovými a parnými turbínami je známe spracovanie 80 % paliva čiastkovým splynovaním v splynovači a 20 % paliva ako zvyšky po splyňovaní spaľovať v kotli s kúreniskom s fluidnou vrstvou (DE-OS 36 12 888). Táto technológia nevyžaduje iba nákladnú techniku zariadenia, lež navyše vedie ešte k znečisteniu odpadného plynu z turbín spaľovaním zvyškov zo spaľovania. a preto vyžaduje ešte zvláštne čistenie spalín, zaradenej za kotlom.For a combined process with gas and steam turbines, it is known to treat 80% of the fuel by partial gasification in a gasifier and 20% of the fuel as gasification residues in a fluidized bed boiler (DE-OS 36 12 888). This technology not only requires expensive equipment technology, but also leads to contamination of the off-gas from turbines by combustion of the combustion residues. and therefore requires a special cleaning of the flue gas downstream of the boiler.

Úlohou vynálezu je pomocou jednoduchého zariadenia a technológie získať a využiť vykurovací čiže horľavý plyn s vysokými kalorickými hodnotám i to znamená dosiahnuť optimálneho dodatočného spálenia spalín pre maximálnu vstupnú teplotu do plynovej turbíny.SUMMARY OF THE INVENTION The object of the invention is to obtain and utilize, with the help of a simple device and technology, a heating or combustible gas with high calorific values.

Podstata vynálezuSUMMARY OF THE INVENTION

Túto úlohu splňuje spôsob prevádzkovania kombinovanej elektrárne s podstechiometricky pracujúcim kotlom na pevné palivá.This task is accomplished by the method of operating the combined power plant with a substoichiometric solid fuel boiler.

najmä hnedé uhlie.especially brown coal.

obsahujúcim kúrenisko cirkulujúcou fluidnou vrstvou, pričom spaliny z kúreniska s cirkulujúcou fluidnou vrstvou, opatreného prívodom pri már neho vzduchu a s prívodmi sekundárneho a terciárneho vzduchu alebo bez nich, sa čistí a priamo dodatočne ohrievajú a ako horúci plyn sa privádzajú do plynovej turbíny, a že celý kotol pracuje v prevádzke podobnom splynovači a do spalín sa po vyčistení privádza čistý vzduch na dodatočné spaľovanie, podľa vynálezu, ktorého podstatou je, že čistý vzduch sa delí medz i kotol a zariadenie na dodatočné spaľovanie v pomere 1 í až a tak sa v kotli udržuje vzduchový pomercomprising a circulating fluidized bed combustion chamber, wherein the flue gases from the circulating fluidized bed combustion chamber, with or without secondary air and secondary air inlets, are cleaned and directly additionally heated and supplied as hot gas to a gas turbine and the boiler operates in a gasifier-like operation and after cleaning the flue gas is supplied with clean air for post-combustion according to the invention, the principle being that clean air is split between the boiler and the post-combustion device in a ratio of 1 to air ratio

0.5 až0.5 to

0,7 a r i ad i pomer množstva spaľovacieho vzduchu k čistému vzduchu sa v závislosti na kvalite paliva.0.7 and the ratio of the amount of combustion air to clean air depends on the fuel quality.

Výhody dosiahnuté spôsobom podľa vynálezu sú nasledujúce:The advantages achieved by the method according to the invention are as follows:

- zvýšenie stupňa účinnosti dosiahnuteľnými vstupnými teplotami do plynovej turbíny a zmenšením obsahu CO,- increasing the degree of efficiency attainable gas turbine inlet temperatures and reducing CO content,

- zmenšenie emisií COz- reduction of CO 2 emissions

- intenzívne využitie entalpie spalín v plynovej turbíne,- intensive use of flue gas enthalpy in a gas turbine,

- je potrebné iba jedného paliva pre kúrenisko s fluidnou vrstvou a pre zariadenie na dostatočné spaľovanie využitím plynnej atmosféry obsahujúci CO z prívodu sekundárneho vzduchu,- only one fuel is needed for the fluidized bed furnace and for the combustion plant using sufficient gas containing CO from the secondary air supply,

- ochrana plynovej turbíny pred znečistením čiastočkami paliva a popola,- protection of the gas turbine against contamination by fuel particles and ash,

- rozdelenie prúdov spalín umožňuje použiť menšie komponenty zariadenia, asplitting the flue gas streams allows the use of smaller components of the equipment, and

- zaistenie veľmi dobrého spaľovania a regulačného ovládania celého procesu.- ensuring very good combustion and regulatory control over the process.

Prehľad obrázkov na výkreseOverview of the figures in the drawing

Vynález bude ďalej bližšie objasnený na príklade vyhotovenia podľa priloženého výkresu, na ktorom je znázornené principiálna schéma kombinovanej elektrárne s kotlom na výrobu pary, obsahujúcim kúrenisko s fluidnou vrstvou, a s turboústrojenstvom s plynovou turbínou.The invention will be further elucidated by way of example with reference to the accompanying drawing, in which a schematic diagram of a combined power plant with a steam boiler comprising a fluidized bed furnace and a gas turbine turbo engine is shown.

ís

Príklady vyhotovenia vynálezuDETAILED DESCRIPTION OF THE INVENTION

Kotol 1 na výrobu pary je opatrený prívodom 2 paliva, kúreniskom 3 s cirkulačnou fluidnou vrstvou, nábežným dnom 4 a prívodom 5 spaľovacieho vzduchu. Kotol 1_ na výrobu pary je opatrený potrubím 6 na vedenie spalín, ktoré ústi do zariadenia 7 na čistenie spalín vo forme cyklónu. Z neho vedie výstupné potrubie 8, ktoré ústi do zariadenia 9 na dodatočné spaľovanie, ktoré je opatrené prívodom 10 čistého vzduchu. Zariadenie 9 na dodatočné spaľovanie je potrubím 11 na vedenie horúceho plynu spojené s plynovou turbínou 12, opatrenou potrubím 13 na odpadný plyn. S plynovou turbínou 12 je spojený kompresor 14, ktorý je opatrený prívodným potrubím čerstvého vzduchu a výstupom 16. Výstup 16 je potrubím 17 na vedenie spaľovacieho vzduchu spojený s prívodom 5 spaľovacieho vzduchu a potrubím 18 na vedenie čistého vzduchu s prívodom 10 čistého vzduchu. Potrubie 17 a 18 sú opatrené regulačnými zariadeniami 19. 20, ktoré sú opatrené pohonmi 21 , 22. PohonyThe steam boiler 1 is provided with a fuel supply 2, a furnace 3 with a circulating fluidized bed, a leading bottom 4 and a combustion air supply 5. The steam boiler 7 is provided with a flue gas duct 6 which flows into the flue gas cleaning device 7 in the form of a cyclone. An outlet pipe 8 leads therefrom to an afterburner 9 which is provided with a clean air inlet 10. The afterburner 9 is a hot gas line 11 connected to a gas turbine 12 provided with a waste gas line 13. A compressor 14 is connected to the gas turbine 12, which is provided with a fresh air inlet and an outlet 16. The outlet 16 is connected to a combustion air supply line 17 with a combustion air supply 5 and a clean air supply line 18 to a clean air supply 10. Pipes 17 and 18 are provided with control devices 19, 20 which are provided with drives 21, 22. Drives

21, 22 sú vedeniami 23, 24 spojené s riadiacim zariadením 25, ktoré je riadiacim vedením 26 spojené s meracím zariadením 40 na meranie kvality paliva. Odvádzacie potrubie 27 popola zo zariadenia 7 na čistenie spalín ústi do kúreniska 3 s fluidnou vrstvou a je opatrené odtahom 28 popola.21, 22 are connected via lines 23, 24 to a control device 25, which is connected to the control device 26 with a fuel quality measuring device 40. The ash discharge pipe 27 from the flue gas cleaning device 7 flows into the fluidized bed furnace 3 and is provided with an ash withdrawal 28.

Spôsob činnosti je nasledujúci:The method of operation is as follows:

Prívodom 2 paliva fluidnou vrstvou privádza závislosti na kvalite pal sa do kúreniska 3 s cirkulačnou palivo 30, napríklad hnedé uhlie.The fluidized bed fuel supply 2 supplies fuel-fired furnaces 30, for example brown coal, depending on the quality of the fuel.

prúd 31 čistého vzduchu medzi dodatočné spaľovanie pomocou regulačných zariadení 1_9,a clean air flow 31 between the afterburner by means of the control devices 19,

Privedením signálu oApplying a signal o

'kva 1 i te pa 1 i va sa na do r i adi aceho zariadenia 25 sa prúd 31 čistého vzduchu delí v pomere 1In the control device 25, the clean air stream 31 is divided in a ratio of 1

1, takže príslušný podiel množstva čiastkového prúdu 33 spaľovacieho vzduchu sa vedie do kotla 1 č i astkového prúdu 34 čistého vzduchu do zariadenia 9 na dodatočné spaľovanie. V kotli 1^ sa preto vytvárajú spaliny bohaté na CO tým, že kúrenisko 3 fluidnou vrstvou pracuje so vzduchovým pomerom1, so that an appropriate fraction of the amount of combustion air sub-stream 33 is fed to boiler 1 or clean air sub-stream 34 to post-combustion apparatus 9. Therefore, CO-rich flue gas is produced in the boiler 1 by operating the furnace 3 with the fluidized bed at an air ratio.

0,5 v prevádzke podobnej splynovači.0.5 in a gasifier-like operation.

Spaliny 35 sa vedú do zariadenia 7 na čistenie spalín. Tu sa vylučuje suchý popol 36 s ešte obsiahnutými škodlivými látkami. Na zachovanie rovnováhy množstva sa čiastkový prúd 37 popola vedie do kúreniska 3 s fluidnou vrstvou a čiastkový prúd 29 popola sa odvádza odťahom 28 popola. Výstupným potrubím 8 sa vyčistené spaliny 38 privádzajú do zariadenia 9 na dodatočné spaľovanie. V zariadení 9 na dodatočné spaľovanie sa vyčistené spaliny 38 bohaté na CO pomocou čiastkového prúdu 34 čistého vzduchu dodatočne spaľujú a tým vzniká horúci plyn 39. Tento horúci plyn 39 sa vedie do plynovej turbíny 1 2. Odpadný plyn sa vedie potrubím 13 na odpadný plyn napríklad do kotla na odpadné teplo. Plynová turbína 12 poháňa generátor a kompresor 14, takže prívodným potrubím 15 čerstvého vzduchu sa na výstupe 16 pripravuje potrebný prúd 31_ čistého vzduchu.The flue gas 35 is fed to a flue gas cleaning device 7. Here, dry ash 36 with the harmful substances still contained is eliminated. In order to maintain the equilibrium of the quantity, the partial ash stream 37 is fed to the fluidized bed furnace 3 and the partial ash stream 29 is discharged by drawing ash 28. Through the outlet pipe 8, the cleaned flue gas 38 is fed to the afterburner 9. In the post-combustion plant 9, the cleaned CO-rich flue gas 38 is recycled through the clean air sub-stream 34, thereby producing hot gas 39. This hot gas 39 is fed to a gas turbine 12. to the waste heat boiler. The gas turbine 12 drives the generator and the compressor 14, so that the fresh air supply line 15 prepares the necessary clean air stream 31 at the outlet 16.

Podstechiometrickou prevádzkou sa dosiahne podstatný nárast množstva paliva, čím je dosiahnutý vyšší výkon kotla 1 na výrobu pary. Súčasne sa s rozdelením spaľovacieho procesu dosiahne vyššia teplotná úroveň horúceho plynu a pomocou s tým spojeného vyššieho stupňa účinnosti plynovej turbíny je umožnené zvýšenie výkonu celého zariadenia. Okrem toho sa vyššou účinnosťou emituje menej COz , čím je menej zaťažované okolité prostredie.Substoichiometric operation results in a substantial increase in the amount of fuel, thereby achieving a higher output of the steam boiler 1. At the same time, a higher temperature level of the hot gas is achieved with the distribution of the combustion process, and the associated higher degree of efficiency of the gas turbine makes it possible to increase the performance of the entire plant. In addition, less CO 2 is emitted by higher efficiency, thus less burdening the environment.

n.n.

Výhody vynálezu vznikajú aj v kúrenisku s cirkulačnou fluidnou vrstvou s prívodom primárneho, sekundárneho a terciárneho vzduchu, keď je čiastkové potrubie horľavého plynu odberovým i m í estam i zaústené do podstech i ometr i cky prevádzkovanej časti kúren i ska s fluidnou vrstvou pred prívodom sekundárneho vzduchu. Čiastkové potrubie horľavého plynu vedie cez zariadenie na čistenie horľavého plynu do zariadenia na dodatočné spaľovanie opatreného prívodom čistého plynu. Takto získaným vysokoka1 or ickým horľavým plynom, ktorý neobsahuje prachové čiastôčky, v zariadení na dodatočné spaľovanie vyrábajú spaliny z kúreniska s fluidnou vrstvou horúci plyn s teplotami nad :l 100 “C.The advantages of the invention also arise in a circulating fluidized bed furnace with a primary, secondary and tertiary air supply, where the combustible gas sub-duct is connected to the fluidized bed part of the furnace and the fluidized bed prior to the secondary air supply. The combustible gas sub-conduit leads through the combustible gas scrubber to a post-combustion plant equipped with a clean gas supply. The thus obtained high-grade, non-particulate combustible gas in a post-combustion plant produces hot gas from a fluidized bed furnace with temperatures above: 1100 ° C.

Claims (1)

PATENTOVPATENTS Spôsob prevádzkovani a komb i novanej elektrárne s podstechiometricky pracujúcim kot1om na pevné palivá, najmä c i rkuluj úcou f 1 u i dnou vrstvou, pričom spaliny z kúreniska c i rkuluj úcou f 1 u i dnou vrstvou, opatreného prívodom primárneho vzduchu a pr í vodm i sekundárneho a terciárneho vzduchu alebo bez nich, sa čistia a priamo dodatočne ohrievajú a ako horúci plyn sa pr i vádzajú do plynovej turbíny, a že celý kotol pracuje v prevádzke podobnej splynovači a do spalín sa po vyčistení privádza čistý vzduch na dodatočné spaľovanie, vyznačujúci sa tým, že čistý vzduch sa delí dodatočné spaľovanie v pomere 1 udržuje vzduchový pomerA method of operating a combined power plant with a substoichiometric working solid fuel boiler, in particular flue gas layer, wherein the flue gas from the furnace or flue gas layer is provided with primary air supply and secondary and tertiary water supply. air or without them, are cleaned and directly additionally heated and supplied as hot gas to a gas turbine and that the whole boiler is operating in a gasifier-like operation and clean air is supplied to the flue gas after cleaning, characterized in that clean air is divided by post-combustion at a ratio of 1 maintaining the air ratio 0,5 až 0,7 a pomer množstva spaľovacieho vzduchu k čistenému vzduchu sa riadi v závislosti0.5 to 0.7 and the ratio of the amount of combustion air to the purified air is controlled depending on
SK85-95A 1992-07-24 1993-06-16 Process and arrangment for operating a combined power station SK8595A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4224959A DE4224959A1 (en) 1992-07-24 1992-07-24 Method to operate combination power station - uses part flue gas flow, which is branched-off in substoichiometric combustion area, in front of secondary air supply
DE19924236512 DE4236512C2 (en) 1992-10-26 1992-10-26 Method for operating a combined cycle power plant, wherein flue gas from a boiler is cleaned with a fluidized bed combustion operated stoichiometrically in gasifier-like operation, afterburned with the supply of clean air and fed to a gas turbine
PCT/EP1993/001522 WO1994002711A1 (en) 1992-07-24 1993-06-16 Process and arrangement for operating a combined power station

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SK8595A3 true SK8595A3 (en) 1995-06-07

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FI963459A0 (en) * 1996-09-04 1996-09-04 Imatran Voima Oy Production and capacity building

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CH246788A (en) * 1945-02-27 1947-01-31 Bbc Brown Boveri & Cie Process for operating gas generators under pressure for solid fuels in connection with multi-stage gas turbine systems with intermediate heating of the working medium as well as a device for carrying out the process.
DE3612888A1 (en) * 1986-04-17 1987-10-29 Metallgesellschaft Ag COMBINED GAS / STEAM TURBINE PROCESS
AU604884B2 (en) * 1988-05-03 1991-01-03 Foster Wheeler Energy Corporation Method for driving a gas turbine
US5050374A (en) * 1990-08-01 1991-09-24 John Hunter Gasification/combustion system

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CZ11395A3 (en) 1995-11-15
WO1994002711A1 (en) 1994-02-03
DK0651854T3 (en) 1996-07-29
RU95105440A (en) 1997-01-10
DE59301985D1 (en) 1996-04-25
ATE135794T1 (en) 1996-04-15
EP0651854A1 (en) 1995-05-10
AU4418593A (en) 1994-02-14
EP0651854B1 (en) 1996-03-20

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