Method for operating a gas turbine installation and equipment for carrying out the method
AssigneeAnsaldo Energia Switzerland AG
InventorsAndreas Brautsch, Richard Carroni
Life of this patent
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Abstract
A method is provided for operating a gas turbine installation which has at least one compressor for compressing combustion air, at least one combustion chamber for combusting a supplied fuel, using the compressed combustion air, and also at least one turbine which is exposed to throughflow by the hot gases from the at least one combustion chamber. Both a first fuel on a carbon base, especially in the form of natural gas, and also a second fuel, in the form of a hydrogen-rich fuel or pure hydrogen, are used as fuel. A reduction of the CO2 emission without basic modifications to the installation is achieved by the first and the second fuels being intermixed and combusted together in the at least one combustion chamber.
Claims9
A method for operating a gas turbine installation in a plant, the gas turbine installation comprising at least one compressor for compressing combustion air, at least one combustion chamber for combusting a supplied fuel using the compressed combustion air, and at least one turbine which is exposed to throughflow by hot gases from the at least one combustion chamber, wherein both a first fuel on a carbon base, in the form of natural gas, and a second fuel, exclusively in the form of pure hydrogen, are used simultaneously as the supplied fuel, the method comprising:
- producing raw hydrogen gas from a feedstock of the plant;
- processing the raw hydrogen gas to produce the pure hydrogen used as the second fuel;
- and
- intermixing and combusting, using premix burners arranged in the at least one combustion chamber, the first and the second fuels together simultaneously in the at least one combustion chamber, the premix burners each comprising a premix device in the form of a double cone and a mixer tube connected to a downstream end of the premix device, relative to a flow direction through the premix burners,
- wherein the first fuel is injected in the premix device via a plurality of nozzles formed on the double cone that are perpendicular to a cone surface of the premix device, and the second fuel is injected as a flow of the pure hydrogen downstream of the premix device via passages in a wall of the mixer tube to dilute the second fuel using the injected first fuel as a diluter.
Dependencies are inferred from the claim text.