| 摘要 |
In a gas turbine and steam turbine installation (1) with a waste-heat steam generator (30) whose flue gas side is connected downstream of the gas turbine (2), the heating surfaces of which waste-heat steam generator (30) being connected into the water/steam cycle (24) of the steam turbine (20), a gasification device (132) is connected upstream of the combustion chamber (6) of the gas turbine (2) by means of a fuel line (130) for integrated gasification of a fossil fuel (B). A saturator (150) is connected into the fuel line (130). In such a gas turbine and steam turbine installation (1), reliable operation of the saturator (150) is to be ensured independently of the operating condition of the gasification device (132). For this purpose and in accordance with the invention, a saturator-water heat exchanger (184) connected on the secondary side into the saturator cycle (152) is subjected, on the primary side, to feed water (S) extracted from the water/steam cycle (24) of the steam turbine (20), it being possible to heat the feed water (S) cooled in the saturator-water heat exchanger (184) by means of a partial flow (T) of compressed air, it being possible to supply the partial flow (T) of compressed air to an air separation installation (138) connected upstream of the gasification device (132).
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