EP 2848865 A1 20150318 - Thermoacoustic stabilization method
Title (en)
Thermoacoustic stabilization method
Title (de)
Thermoakustisches Stabilisierungsverfahren
Title (fr)
Procédé de stabilisation thermoacoustique
Publication
Application
Priority
EP 13184151 A 20130912
Abstract (en)
The invention relates to a method for thermoacoustic stabilization of gas turbine combustors (1) with multiple burners (2), which are arranged in at least one burner group (3) and each of the burners (2) is supplied with fuel (5) and oxidant (6). The method is characterized in operating neighboring burners (2) within that burner group (3) at different nominal velocities of oxidant through controlling of the pressure drop of the oxidant flow across individual burners (2) (velocity staging). In a preferred embodiment identical burners (2) are used wherein at least one burner (2) of the burner group (3) is both operated with a different amount of oxidant (6) and with a different amount of fuel (5) than the other burners (2) in that burner group (3). With such a velocity and fuel staging the flame temperatures are equal which means on one hand that there is no NOx penalty and on the other hand that a good mitigation for pulsation is achieved.
IPC 8 full level
F23R 3/26 (2006.01)
CPC (source: EP)
F23M 20/005 (2015.01); F23R 3/26 (2013.01); F23R 2900/00014 (2013.01)
Citation (applicant)
- EP 0321809 B1 19910515
- US 4932861 A 19900612 - KELLER JAKOB [CH], et al
- EP 1158247 B1 20060419 - ALSTOM TECHNOLOGY LTD [CH]
- WO 2010115980 A2 20101014 - ALSTOM TECHNOLOGY LTD [CH], et al
- US 8205714 B2 20120626 - SCHUERMANS BRUNO [CH], et al
Citation (search report)
- [X] EP 1906093 A2 20080402 - UNITED TECHNOLOGIES CORP [US]
- [XY] WO 9812478 A1 19980326 - SIEMENS AG [DE], et al
- [YA] WO 9811383 A2 19980319 - SIEMENS AG [DE], et al
- [A] GB 2375601 A 20021120 - SIEMENS AG [DE]
- [A] WO 2006082210 A1 20060810 - ENEL PRODUZIONE SPA [IT], et al
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 13184151 A 20130912