A-5 強旋回気流を用いた拡散燃焼器の燃焼特性(燃焼・燃焼器II,一般講演)

概要

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Although the lean premixed combustion technology is the most effective means to reduce NOx emission from gas turbine combustors, consideration to prevent the mixture from flash-back, self-ignition or oscillatory combustion is necessary in designing a premixed type combustor. Then, the authors have devised a newly designed combustor where fuel and air supplied to the combustor mixes with each other rapidly by a highly turbulent shear flow generated by a strong swirl flow. To examine the availability of the rapid mixing diffusion combustor fundamental experiments have been conducted using a simplified can-type model combustor. Flame stability and NOx emission characteristics are remarkably influenced by fuel supply method. When the fuel is injected at an outer radial position, NOx emission decreases, increasing lower flame stability limit. However, the emissions of unburned ingredients are insensitive to fuel supply method and fuel injection radial position.
社団法人日本ガスタービン学会の論文
2004-10-01