Patent ID: 8434312

Claim:
A method for the low-CO emissions operation of a gas turbine with sequential combustion, wherein the gas turbine includes a first turbine, a second turbine, at least one compressor wherein the at least one compressor includes a row of variable compressor inlet guide vanes, a first combustor which is connected downstream to the compressor and the hot gases of which first combustor are admitted to the first turbine, and a second combustor which is connected downstream to the first turbine and the hot gases of which are admitted to the second turbine, the second combustor including operative burners each having an air ratio (λ), the method comprising: maintaining the air ratio (λ) of the operative burners of the second combustor below a maximum air ratio (λ max ); with a load increase, before operating the second combustor, increasing a turbine inlet temperature (TIT 1 ) to a part load limit, and opening the row of variable compressor inlet guide vanes; and when engaging the second combustor, closing the row of variable compressor inlet guide vanes and introducing fuel into the second combustor.