To provide a gas turbine to reduce the generation of NOx and maintain reduction of a cost being the original advantage of the diffusion type as it is, in a diffusion combustion type gas turbine to separately supply fuel and air which are burnt in a combustor.
A diffusion combustion gas turbine 3 is constituted that an exhaust route 5 for exhaust gas of the gas turbine 3 and a fuel route for fuel supply of a combustor 2 are intercommunicated through a recirculation route 8 to recirculate exhaust gas through an exhaust gas compressor 7. By mixing exhaust gas of the gas turbine 3 in fuel through the recirculation route 8, high calory fuel is reformed to low calory fuel and a flame temperature under combustion is reduced and NOx generation concentration is decreased.
ITSURA TETSUO
FUKUE ICHIRO
AKAMATSU SHINJI
