Patent ID: 7594402

Claim:
A method for the introduction of fuel into a premixing burner having a pilot gas feed and a premix gaseous fuel feed for the operation of a gas turbine in the entire load range, in which the pilot gas feed and liquid fuel feed are carried out via a common delivery line in a burner lance provided in the premixing burner and the premix gaseous fuel feed is carried out via side wall shells of the premixing burner, the method comprising: feeding the premix gaseous fuel; regulating the feed of the pilot gas so as to enable the setting of a mixture ratio between premix gaseous fuel and pilot gas; and regulating liquid fuel into the premixing burner via the burner lance in a load range when the pilot gas feed is interrupted; wherein the pilot gas feed and the liquid fuel feed alternatively pass though a same single fuel feed passage of said common delivery line.