IGTC-104 The Emission Characteristics of a Lean Premixed Combustor(Organized Session IV NO_x ABATEMENT COMBUSTORS)

概要

論文の詳細を見る
The lean combustion technique applied to the gas turbine combustor was examined on the exhaust emission and combustion characteristics for a wide range of operating conditions by using a model combustor. When the combustor operated with a lean air/fuel mixture, all the pollutant emissions are sufficiently low without fall of combustion efficiency. A recirculation zone generated in the upstream region by strong swirl motion and a flame holder plays an important role in flame stabilization by exchanging heat and active species with the main flow. At a very lean condition, below 0.6 of equivalence ratio, the flame around the recirculation zone partially blows off due to insufficient support of flame holding by the low temperature recirculation zone and combustion efficiency is remarkably reduced with unburned gas emission.