Combustion Characteristics of Small Size Gas Turbine Combustor Fueled by Biomass Gas Employing Flameless Combustion

One approach to achieving 99% combustion efficiency (C.E.) and 10 ppmV or lower NO_x (at 15%O₂) in a micro gas turbine (MGT) combustor fueled by biomass gas at a variety of operating conditions is with the use of flameless combustion (FLC). This paper compares experimentally obtained results and CHEMKIN analysis conducted for the developed combustor. As a result, increase the number of stage of FLC combustion enlarges the MGT operation range with low-NO_x emissions and high-C.E. The composition of fuel has a small effect on the characteristics of ignition in FLC. In addition, NO_x in the engine exhaust is reduced by higher levels of CO₂ in the fuel.