| 摘要 |
A fully-fired combined plant includes a boiler, a boiler feed air line provided with an air heater for feeding heated air to the boiler, a gas turbine, a gas turbine exhaust gas line connected to the gas turbine and the boiler feed air line downstream of the air heater for feeding exhaust gas from the gas turbine into the boiler feed air line. A shutter is provided on the gas turbine exhaust gas line for shutting the line at the time the operation of the gas turbine is stopped, and a ventilator is provided on the gas turbine exhaust gas line on the upstream side of the shutter with respect to a gas turbine exhaust gas flow for ventilating the gas turbine exhaust gas line on the upstream side of the shutter.
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