| 摘要 |
1. Combined gas and steam turbine power plant, with a coal gasification apparatus arranged upstream of the gas turbine part, with a heat exchanger installation arranged downstream, considering the flow of raw gas, of the coal gasification apparatus and having a high-pressure steam generator, a raw gas/purified gas heat exchanger and a low-pressure steam generator, with a gas purification installation arranged downstream of the heat exchanger installation, with a purified gas conduit leading from the gas purification installation to the combustion chamber of the gas turbine, with a waste-heat steam generator installation having the exhaust gas of the gas turbine flowing therethrough and having an economiser and a high-pressure steam generator, and with a steam turbine power plant part which is connected to the waste-heat steam generator installation, the feed water piping being also divided upstream of the economiser into a plurality of runs extending independently of one another, characterized in that parallel to the first feed water piping run (53) leading to the waste-heat steam generator installation (28) a further feed water piping run (54) is taken, by way of a heating surface (32) arranged downstream, considering the flow of gas, of other heating surfaces (41, 43) of the waste-heat steam generator installation, to the high-pressure steam generator (8) of the heat exchanger installation (6) which is arranged downstream of the coal gasification apparatus (4). |
