WO2014114535A1 - Brûleur muni d'un système central d'alimentation en combustible - Google Patents

Brûleur muni d'un système central d'alimentation en combustible Download PDF

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Publication number
WO2014114535A1
WO2014114535A1 PCT/EP2014/050687 EP2014050687W WO2014114535A1 WO 2014114535 A1 WO2014114535 A1 WO 2014114535A1 EP 2014050687 W EP2014050687 W EP 2014050687W WO 2014114535 A1 WO2014114535 A1 WO 2014114535A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
central
nozzles
fuel supply
burner
Prior art date
Application number
PCT/EP2014/050687
Other languages
German (de)
English (en)
Inventor
Jürgen MEISL
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2014114535A1 publication Critical patent/WO2014114535A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/36—Supply of different fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00016—Preventing or reducing deposit build-up on burner parts, e.g. from carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00004—Preventing formation of deposits on surfaces of gas turbine components, e.g. coke deposits

Definitions

  • Burner with a central fuel supply arrangement The invention relates to a burner with a central one
  • Fuel supply arrangement for lean premix combustion also for liquid fuels with increased coking tendency.
  • burners have been developed in recent years that have particularly low emissions of nitrogen oxides (NOx).
  • NOx nitrogen oxides
  • Such burners can be operated either selectively or in combination not only with one fuel, but also with different fuels, for example oil and natural gas, in order to increase the supply reliability and flexibility of the operation.
  • Such burners are described, for example, in EP 0 276 696 B1.
  • the burner described in EP 0 276 696 B1 is a hybrid burner for premixing operation with gas and / or oil, as it is used in particular for gas turbine plants.
  • the burner comprises a central fuel supply arrangement, in which also a pilot burner system is integrated, which is operable with gas and / or oil as a so-called diffusion burner or as a separate premix burner.
  • a pilot burner system is integrated, which is operable with gas and / or oil as a so-called diffusion burner or as a separate premix burner.
  • the central fuel supply assembly is surrounded by a main burner system having an air supply annular channel system with a swirler blading therein having a plurality of vanes and pre-mixing gas nozzles located upstream of the vanes.
  • inlet nozzles for oil in the area of the swirl vanes are present in the fuel supply arrangement, which allow premixing of the main air flow with oil.
  • the fuel gas can also be injected through arranged in the swirl blades nozzle orifices in the air duct, as described for example in EP 0 580 683 Bl.
  • the object of the invention is to provide a burner of the type mentioned, in which the ⁇ l -Verkokung is avoided in the internal oil distribution system of premix burners.
  • the invention solves this problem by providing that in such a burner having a central fuel supply arrangement, an annular air duct surrounding the central fuel supply arrangement for supplying combustion air, first fuel nozzles for injecting a substantially gaseous fuel into the annular air duct, wherein the first fuel nozzles of a first fuel distributors in the fuel supply arrangement and second fuel nozzles for injecting a substantially liquid fuel into the annular air channel, the second fuel nozzles being fed from a second fuel distributor in the first fuel distributor
  • Fuel supply arrangement are fed, the second fuel distributor in the central fuel supply assembly through an air gap substantially from the rest of the central Fuel supply arrangement is thermally decoupled, wherein the second fuel nozzles are arranged in the central fuel supply arrangement on the annular air channel and in the region of the second fuel nozzles, the air gaps relative to the annular air duct are closed.
  • the invention is based on the recognition that the oxygen responsible for the oil coking in the oil can not be completely removed and therefore coking must be prevented or reduced by reducing the heat input.
  • the burner internal ⁇ lvertei- is largely thermally separated from the rest of the burner, so that the oil distribution channel is not just a channel in the burner body, as in previous hybrid burners, but is largely separated by a surrounding air gap from the rest of the burner ,
  • the central fuel supply assembly includes not only the second fuel distributor for the second fuel nozzles for injecting a substantially liquid fuel, but also the corresponding fuel supply to the second fuel distributor. It is therefore advantageous if this fuel supply is also thermally decoupled by an air gap substantially from the rest of the central fuel supply arrangement.
  • the heat flow is reduced to the oil distribution channel, reduces the heating of the oil and lowered the coking risk.
  • the reduction of the heat input is a necessary condition for a permanent and trouble-free combustion. free operation.
  • the advantages of the invention can also be used for fuels with low to moderate coking tendency.
  • the burner 1 according to the invention which can optionally be used in conjunction with a plurality of identical burners, for example in the combustion chamber of a gas turbine plant, comprises an inner pilot burner system and a main burner system concentrically surrounding the pilot burner system.
  • the figure essentially shows the main burner system. Both the pilot burner system and the main burner system may optionally be operated with gaseous and / or liquid fuels, such as natural gas or fuel oil.
  • the main burner system comprises a central fuel supply arrangement 2 and an annular air channel 3 surrounding this central fuel supply arrangement 2, through which a plurality of swirl vanes 11 of a swirl blading extend. These swirl vanes 11 have first fuel nozzles 4, through which fuel gas in the inflowing through the annular air channel 3
  • Air 12 can be injected.
  • oil or other liquid fuels
  • air 12 can be injected into the air 12 flowing through the annular air channel 3 by means of second fuel nozzles 6.
  • the arranged in the swirl vanes 11 first fuel nozzles 4, as well as arranged in the central fuel supply assembly 2 on the annular air duct 3 second fuel nozzles 6 are supplied via the central fuel supply assembly 2, the so-called hub with fuel.
  • first 5 and second fuel distributor 7 are arranged, which supply the first fuel nozzles 4 with gaseous and the second fuel nozzles 6 with liquid fuel.
  • the central fuel supply arrangement 2 comprises fuel feeds.
  • the figure shows the BrennstoffZu arrangement 9 for the second fuel distributor 7, ie the oil supply.
  • the second fuel distributor 7 in the central fuel supply arrangement 2 is substantially thermally decoupled from the remainder of the central fuel supply arrangement 2 by an air gap 8 surrounding it, which is closed in the region of the second fuel nozzles 6 with respect to the annular air duct 3, for example by welding (End 13 for air gap 8), so as to avoid a flow through the air gap 8 with Ver whorend Kunststoff 12.
  • the fuel supply 9 to the second fuel distributor 7 is thermally decoupled from the rest of the central fuel supply arrangement 2 by an air gap 10.
  • the second fuel distributor 7 and the fuel feed 9 are free of oil. Thus, it can not come to a coking in these areas.
  • oil operation the coking is now avoided or at least reduced, that a better cooling of the second fuel distributor 7 and the fuel supply 9 by the flowing oil itself, because due to the air gaps 8, 10 a smaller amount of heat from the annular air duct 3 at the second

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

L'invention concerne un brûleur (1) muni d'un système central d'alimentation en combustible (2), d'un conduit d'air annulaire (3) entourant le système central d'alimentation en combustible (2) et servant à l'amenée d'air de combustion, de premiers injecteurs de combustible (4) servant à l'injection d'un combustible sensiblement gazeux dans le conduit d'air annulaire (3), les premiers injecteurs de combustible (4) étant alimentés dans le système central d'alimentation en combustible (2) par un premier distributeur de combustible (5), et de seconds injecteurs de combustible servant à l'injection d'un combustible sensiblement liquide dans le conduit d'air annulaire (3), les seconds injecteurs de combustible étant alimentés dans le système central d'alimentation en combustible (2) par un second distributeur de combustible (7). Dans le système central d'alimentation en combustible (2), le second distributeur de combustible (7) est sensiblement désaccouplé thermiquement du reste du système central d'alimentation en combustible (2) par un entrefer (8), les seconds injecteurs de combustible sont agencés dans le système central d'alimentation en combustible (2) sur le conduit d'air annulaire (3), et les entrefers (8) sont fermés par rapport au conduit d'air annulaire (3) dans la zone des seconds injecteurs de combustible.
PCT/EP2014/050687 2013-01-25 2014-01-15 Brûleur muni d'un système central d'alimentation en combustible WO2014114535A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013201232.2 2013-01-25
DE201310201232 DE102013201232A1 (de) 2013-01-25 2013-01-25 Brenner mit einer zentralen Brennstoffzufuhranordnung

Publications (1)

Publication Number Publication Date
WO2014114535A1 true WO2014114535A1 (fr) 2014-07-31

Family

ID=49999905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/050687 WO2014114535A1 (fr) 2013-01-25 2014-01-15 Brûleur muni d'un système central d'alimentation en combustible

Country Status (2)

Country Link
DE (1) DE102013201232A1 (fr)
WO (1) WO2014114535A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276696B1 (fr) 1987-01-26 1990-09-12 Siemens Aktiengesellschaft Brûleur hybride pour fonctionnement en prémélange au gaz et/ou au mazout, notamment pour turbines à gaz
EP0580683B1 (fr) 1991-04-25 1995-11-08 Siemens Aktiengesellschaft Bruleur, en particulier pour turbines a gaz, pour la combustion peu polluante du gaz de houille et d'autres combustibles
EP1793169A2 (fr) * 2005-11-30 2007-06-06 General Electric Company Buses de carburant pour turbines à gaz et méthode d'assemblage associée
EP2230458A1 (fr) * 2009-03-17 2010-09-22 Siemens Aktiengesellschaft Agencement de brûleur pour combustibles liquides et procédé de fabrication d'un agencement de brûleur
EP2236933A1 (fr) * 2009-03-17 2010-10-06 Siemens Aktiengesellschaft Agencement de brûleur pour combustibles liquides et procédé de fabrication d'un agencement de brûleur
US20120198853A1 (en) * 2009-10-13 2012-08-09 Snecma Multipoint injection device for a combustion chamber of a turbine engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070826A (en) * 1975-12-24 1978-01-31 General Electric Company Low pressure fuel injection system
US4735044A (en) * 1980-11-25 1988-04-05 General Electric Company Dual fuel path stem for a gas turbine engine
CH666340A5 (en) * 1985-05-29 1988-07-15 Bbc Brown Boveri & Cie Gas turbine combustion chamber - has fuel lines to burner nozzles extending through secondary air duct and contained in tubes connected to atmosphere
CA2056480C (fr) * 1991-01-18 2000-01-04 Thomas Maclean Collecteur d'admission de turbine a gaz
US7654088B2 (en) * 2004-02-27 2010-02-02 Pratt & Whitney Canada Corp. Dual conduit fuel manifold for gas turbine engine
US20090111063A1 (en) * 2007-10-29 2009-04-30 General Electric Company Lean premixed, radial inflow, multi-annular staged nozzle, can-annular, dual-fuel combustor
US8443608B2 (en) * 2008-02-26 2013-05-21 Delavan Inc Feed arm for a multiple circuit fuel injector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276696B1 (fr) 1987-01-26 1990-09-12 Siemens Aktiengesellschaft Brûleur hybride pour fonctionnement en prémélange au gaz et/ou au mazout, notamment pour turbines à gaz
EP0580683B1 (fr) 1991-04-25 1995-11-08 Siemens Aktiengesellschaft Bruleur, en particulier pour turbines a gaz, pour la combustion peu polluante du gaz de houille et d'autres combustibles
EP1793169A2 (fr) * 2005-11-30 2007-06-06 General Electric Company Buses de carburant pour turbines à gaz et méthode d'assemblage associée
EP2230458A1 (fr) * 2009-03-17 2010-09-22 Siemens Aktiengesellschaft Agencement de brûleur pour combustibles liquides et procédé de fabrication d'un agencement de brûleur
EP2236933A1 (fr) * 2009-03-17 2010-10-06 Siemens Aktiengesellschaft Agencement de brûleur pour combustibles liquides et procédé de fabrication d'un agencement de brûleur
US20120198853A1 (en) * 2009-10-13 2012-08-09 Snecma Multipoint injection device for a combustion chamber of a turbine engine

Also Published As

Publication number Publication date
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