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US 6,178,738 B2Granted
Method of operating a gas-turbine group by directing a fuel/water mixture to the combustion chamber
AssigneeAsea Brown Boveri AG
InventorHans Ulrich Frutschi
Life of this patent
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Abstract
In a method of operating a gas-turbine group, an exhaust-gas flow (9) of the gas-turbine group is admitted to a heat-exchange stage (14, 18), through which a liquid fuel (12) and a water quantity (16) flow. The thermally processed media (12, 16) are then brought together, whereby an emulsion (19) is formed, and this emulsion (19) is used to operate a burner of a combustion chamber. In this way, the spraying of this very hot emulsion (19) into the combustion air ensures good mixing.
Claims6
A method of operating a gas-turbine group, comprising the steps of:
- providing a compressor unit, at least one combustion chamber, at least one turbine and a generator;
- operating said at least one combustion chamber with the aid of a burner composed of a combustion-air-swirled premix section;
- admitting a gas flow from the gas-turbine group to a heat-exchange stage, wherein a liquid fuel and a water quantity flow through this heat-exchange stage and are subjected to thermal processing there;
- forming an emulsion with the hot liquid fuel and the hot water;
- and
- operating the burner of the combustion chamber with the emulsion.
3 more elements
A method of operating a gas-turbine group, comprising the steps of:
- providing a compressor unit, at least one combustion chamber, at lest one turbine and a generator;
- operating said at least one combustion chamber with the aid of a burner composed of a combustion-air-swirled premix section;
- admitting a gas flow from the gas-turbine group to a heat-exchange stage, wherein a liquid fuel and a water quantity flow through this heat-exchange stage and are subjected to thermal processing there;
- directing the hot fuel into superheated steam generated from the water;
- and
- operating the burner of the combustion chamber with this fuel/steam mixture.
3 more elements
Dependencies are inferred from the claim text.