연료(燃料) 과농(過濃)/희박(稀薄) 조절(調節)의 촉매연소(觸媒燃燒)에 의한 Fuel-Nox 저감(低減) 기술(技術)

Reducing technology of fuel-NOx generation using fuel-rich/-lean catalytic combustion

A two-step fuel-rich/fuel-lean catalytic combustion seems to be one of the most effective methods to control simultaneously the NO generation and the hydrocarbon (HC) conversion from fuel-bound nitrogen. By controlling equivalent air ratio for maintaining fuel-rich and fuel-lean condition over each catalytic layer, space velocity, inlet temperature, and catalyst component, the HCand ammonia conversion efficiency higher than 95% could be achieved, with ammonia conversion to NO remaining below 5%. The experimental results wouldbe applied to the combustion of land fill gas and to gasified refuse-derived fuels as a method of minimizing NO generation.