| 摘要 |
PURPOSE: To spray ammonia into the exhaust gas of a gas turbine easily. CONSTITUTION: The described group comprises mainly at least one compressor 1a, 1b, at least one gas turbine 15, 19 and at least one electric machine. A first heat generator 7 is arranged upstream of the first turbine 15 and another heat generator 18 is arranged downstream of the first turbine 15 when the gas turbine is divided into a plurality of pressure stages irrelative with each other in flow direction. Ammonia 16 is sprayed into exhaust gas for the first turbine 15 downstream of the first turbine 15 and upstream of the another heat generator 18. Thus, the NOx emission in exhaust gas is deoxydized by spraying ammonia thereto without efficiency loss.
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