Alstom Technology Limited

Ansaldo Energia Switzerland Ag

Ansaldo Energia IP UK Limited

Andreas Brautsch

Richard Carroni

Dieter Winkler

Patrick Queloz

Eribert Benz

Bettina Paikert

Herbert E Andrus, Jr

Carl R Bozzuto

Martin Zajadatz

Corinne Beal

Paul R Thibeault

Gregory N Liljedahl

John H Chiu

Michal Tadeusz Bialkowski

Michel Vandycke

Daniel Burri

Gisbert Wolfgang Kaefer

Floris Van Straaten

Laurent Maghdissian

Felix Güthe

Bernd Socher

Gian-Luigi Agostinelli

Hanspeter Hardegger

George Mitsis

Floris M Azn Van Straaten

Jr Herbert E Andrus

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 COemission 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.

Method for operating a gas turbine installation and equipment for carrying out the method

A power plant includes a gas turbine unit adapted to feed flue gases into a boiler of a steam turbine unit, to be then diverted into a recirculated flow and discharged flow. The recirculated flow is mixed with fresh air forming a mixture that is fed into a gas turbine unit compressor. The discharged flow is fed into a COcapture unit that is an amine based or chilled ammonia based COcapture unit. A cooler for the flue gases can be configured as a shower cooler located upstream of the COcapture unit. The plant can also include a washing unit to neutralize ammonia drawn by the flue gases that can be fed with nitric acid gathered at the cooler.

[object Object]

A method and installation are disclosed which can, for example, provide for reliable, low-Nox-emission operation of a gas turbine installation with hydrogen-rich fuel gas. An exemplary gas turbine installation includes an arrangement for flue gas recirculation into a compressor inlet and for fuel gas dilution. Oxygen content in combustion air can be reduced by recirculation of recooled flue gas, and the fuel gas can be diluted with compressed flue gas. The oxygen reduction in the combustion air can lead to minimum residual oxygen in the flue gas which can be used for fuel gas dilution. As a result of the flue gas recirculation, water content in the combustion air can be increased by feedback of the water which results as a combustion product. The oxygen reduction, increased water content, and fuel dilution can reduce the flame velocity of hydrogen-rich fuel gases and enable a robust, reliable and low-emission combustion.

Gas turbine installation with flue gas recirculation dependent on oxygen content of a gas flow

A hot solids process selectively operable for purposes of generating at least one predetermined output based on what the specific nature of the primary purpose of the hot solids process is for which the at least one predetermined output that is selected from a multiplicity of predetermined outputs, such as H2 and CO2, is being produced, and wherein such primary purpose of the hot solids process is designed to be pre-selected from a group of primary purposes of the hot solids process that includes at least two of the generation of H2 for electric power purposes, the generation of SynGas for electric power production as well as for other industrial uses, the production of steam for electric power generation as well as for other uses, the production of process heat, the production of CO2 for agricultural purposes, and the generation of a feedstock such as H2 for use for the production of liquid hydrocarbons.

Hot solids process selectively operable based on its primary purpose

A lance for a hybrid burner of a combustor of a gas turbine, includes an inner passage for a liquid fuel, an outer passage coaxially enclosing the inner passage for a gaseous fuel, a plurality of star like arranged outer nozzles branching off radially from the outer passage, a plurality of inner nozzles, which branch off radially from the inner passage and which each extend coaxially inside one of the outer nozzles, and a distributor section, which is arranged upstream of the outer nozzles in the outer passage and has a plurality of star like arranged, coaxially extending through-openings for the gaseous fuel. In order to reduce the flow resistance in the gas path of the lance, the through-openings each have an opening width which is larger in the circumferential direction than in the radial direction.

Hybrid burner lance

A method for operating a turbogroup, especially of a power generating plant, is provided. The turbogroup includes a compressor for compressing combustion air, a combustion chamber with at least one burner for producing a hot gas, and a turbine for expanding the hot gas, performing work. The method includes feeding combustion air to a compressor, where it is compressed, and fed to at least one burner and feeding a fuel to the at least one burner. The method also includes injecting water into the combustion air upstream of the burner where it is evaporated, mixing the fuel in the burner with the combustion air-water vapor mixture, combusting the fuel-combustion air-water vapor mixture in the combustion chamber, and feeding the hot gas which is produced in the combustion chamber to the turbine where it is expanded and performs work.

Operating method for a turbogroup

A method for operating a gas turbine set comprises the compression of an air mass flow in a compressor, feeding the compressed air mass flow into a first combustion chamber, burning the first mass fuel flow in the first combustion chamber in the compressed mass air flow, expanding the resulting hot gas in the first turbine, feeding the partially expanded hot gas into a second combustion chamber, and burning a second mass fuel flow in the second combustion chamber in the partially expanded hot gas. The method furthermore comprises supplying to the gas turbine set the first mass fuel flow and the second mass fuel flow preferably in a common supply line with a fuel supply pressure, and stipulating division of the total mass flow into a first and second mass fuel flow according to a normal operation concept. When the boundary value of the fuel supply pressure for example in the preferably common supply line is not reached, there is a deviation from the division according to the normal operating concept. Relative to the normal operation concept the first mass fuel flow is reduced by the difference mass flow and the second mass fuel flow is increased at least by the difference mass flow.

Method for the operation of a gas turbo group

A method for operating a gas-supply system, particularly for a gas turbine, having a gas-carrying pipeline, a controllable compressor arranged in the pipeline and at least one consumer connected to the pipeline and located downstream from the compressor. The compressor is regulated as a function of a comparison between the setpoint discharge pressure of the compressor and the actual discharge pressure of the compressor. The energy consumption of the compressor can be reduced in that the setpoint discharge pressure of the compressor is determined as a function of a setpoint admission pressure of the consumer.

Gas supply arrangement and associated method, particularly for a gas turbine

A method of operating a thermal power plant, such as a gas turbine power plant, in which a rotary unit, such as at least one gas turbine stage, is driven by burning gaseous fuel inside a combustion chamber, with hot gases being formed, the rotary energy of which rotary unit is converted into another form of energy, such as into electrical energy. A load set point (L) of the thermal power plant is set by regulating the quantity of gaseous fuel fed to the combustion process. The thermal power plant is operated at a load set point (L), provided the gaseous fuel is fed to the combustion process through a gas line at a gas pressure p, with(),where p(L) represents a pressure value which depends at least on the load set point (L) of the thermal power plant.

Method of operating a thermal power plant

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Wuerenlingen, Switzerland

Andreas Brautsch