Gas-turbine combined-cycle power generation is expected to lead to a long-term extension of
power-generation markets all over the world by providing clean and economic thermal power
plants. Mitsubishi Heavy Industries (MHI) is developing technologies that will be applied to a
1700°C-class gas turbine as part of a national project in order to pursue much higher efficiency,
and has been promoting the development of a combustor with an exhaust gas recirculation (EGR)
system for achievement of low NOx combustion systems for ultrahigh-temperature gas turbines. In
2011, the last year of development research of technologies for practical application, MHI
constructed a high-pressure combustion test device simulating exhaust gas recirculation, and
obtained test results that attained the development target of NOx concentration of 50 ppm or less
with exhaust gas recirculation. This document describes a high-pressure combustion test that
simulates exhaust gas recirculation.
