Gas and steam turbine plant

摘要

In a gas and steam turbine plant with a waste-heat steam generator, a fuel gasification device is located upstream of the combustion chamber of the gas turbine via a fuel line. The after-heat steam generator is located downstream of the gas turbine on the flue-gas side and the heating surfaces of which are connected into the water/steam circuit of the steam turbine for the integrated gasification of a fossil fuel. For especially high plant efficiency, a heat exchanger is connected on the primary side into the fuel line between the gasification device and a saturator. In addition to a mixing device for admixing nitrogen, the heat exchanger likewise is connected on the secondary side into the fuel line between the saturator and the combustion chamber.