A gas turbine with a catalytic combustor and method of operating such a gas turbine

(19)

(11)

EP 1 010 947 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.03.2002 Bulletin 2002/12

(43)	Date of publication A2:
	21.06.2000 Bulletin 2000/25

(21)	Application number: 99124944.2

(22)	Date of filing: 14.12.1999

(51)	International Patent Classification (IPC)⁷: F23R 3/40, F02C 3/04, F02C 3/00

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

14.12.1998 US 211147

(71)	Applicant: UNITED TECHNOLOGIES CORPORATION
	Hartford, CT 06101 (US)

(72)	Inventor:
	Sangiovanni, Joseph J. West Suffield, CT 06093 (US)

(74)	Representative: Klunker . Schmitt-Nilson . Hirsch
	Winzererstrasse 106 80797 München 80797 München (DE)

(54)	A gas turbine with a catalytic combustor and method of operating such a gas turbine

(57) The present invention is a method and apparatus for operating a gas turbine that includes a catalytic combustor. The catalyst in the catalytic combustor is electrically heated, thereby initiating catalytic combustion without preheating the intake air. Eliminating the need to preheat the intake air allows removal of the preburner which otherwise produces an undesirable amount of oxides of nitrogen NO_x, especially at start up and low load conditions.

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