| 摘要 |
One of the objects of the invention is to provide a water-saving type advanced humid air gas turbine system (AHAT) that can decrease the amount of makeup water to be supplied from the outside, by reducing the amount of water consumed when the gas turbine system is starting up, shut down, or subjected to load rejection. The AHAT includes a gas turbine system; a heat recovery steam generator 10 for generating steam by use of exhaust gas from a turbine 4; a water recovery system 6 for recovering moisture contained in the exhaust gas; a first steam system for supplying steam, coming from the heat recovery steam generator 10, to a compressed air header; and a second steam system for supplying steam, coming from the heat recovery steam generator 10, to the heat recovery steam generator 10 or the water recovery system 6. The gas turbine system includes a compressor 1, the compressed air header 2 for generating humidified combustion air, a combustor 3 for generating combustion gas, and the turbine 4. When the gas turbine system is starting up, shut down or subjected to load rejection, steam coming from the heat recovery steam generator 10 is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator 10. |
