Global Patent Index - EP 2263045 A1

EP 2263045 A1 20101222 - FUEL STAGING IN A BURNER

Title (en)

FUEL STAGING IN A BURNER

Title (de)

BRENNSTOFFVERSORGUNG IN EINEM BRENNER

Title (fr)

ÉTAGEMENT DE COMBUSTIBLE DANS UN BRÛLEUR

Publication

EP 2263045 A1 20101222 (EN)

Application

EP 09726632 A 20090326

Priority

  • EP 2009053562 W 20090326
  • EP 08006661 A 20080401
  • EP 09726632 A 20090326

Abstract (en)

[origin: EP2107313A1] The invention relates to a method for staging operation at start up of a burner for a gas turbine engine combustor. It is one object of the invention to stabilize the combustion of a lean-rich partially premixed low emission burner for a gas turbine combustor at all engine load conditions. The method includes the steps of: - adding fuel (23) mixed with air (24) to the pilot combustor (5); - igniting the mixture utilizing an ignitor (34) provided at an upstream end of the pilot combustor (5) for initiating a lean flame (35) inside the pilot combustor (5) and for providing a flow of said radicals (32) and heat; - imparting a swirl of fuel (30b) and air (27) at an outside at the exit (6) of the pilot combustor (5) at an upstream end of a combustion room for creating and sustaining a main lean flame (7); - gradually adding a swirl of air (12) and fuel (14) for establishing a full load stage to at least one channel (10, 11).

IPC 8 full level

F23R 3/34 (2006.01)

CPC (source: EP US)

F23R 3/343 (2013.01 - EP US); F23R 3/346 (2013.01 - EP US); F23D 2900/00015 (2013.01 - EP US)

Citation (search report)

See references of WO 2009121779A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

EP 2107313 A1 20091007; CN 102099628 A 20110615; CN 102099628 B 20140205; EP 2263045 A1 20101222; RU 2010144537 A 20120510; RU 2468298 C2 20121127; US 2011033806 A1 20110210; WO 2009121779 A1 20091008

DOCDB simple family (application)

EP 08006661 A 20080401; CN 200980111287 A 20090326; EP 09726632 A 20090326; EP 2009053562 W 20090326; RU 2010144537 A 20090326; US 93593009 A 20090326