MULTI-FUEL-CAPABLE GAS TURBINE COMBUSTOR

摘要

Provided is a multi-fuel-capable gas turbine combustor that can sufficiently use various fuels having characteristics departing from a premix characteristic range suitable for generating premixed gas, even while maintaining favorable low-emission performance resulting from premix combustion. The present invention is provided with: a main burner (12) that supplies premixed gas (M) containing a first fuel for premixing to a first combustion region (S1) in a combustion chamber (10), and causes premix combustion; and a reheating burner (20) that supplies a second fuel for reheating having a composition differing from that of the first fuel to a second combustion region downstream from the first combustion region (S1) in the combustion chamber (10) and causes diffuse combustion. The first fuel has a premix characteristic range suitable for generating a premixed gas (M), and the second fuel has characteristics departing from the premix characteristic range.