廃棄物焼却におけるチャーNO_x生成挙動に対するCO₂及びH₂Oの影響

抄録

In recent years, low air ratio high temperature combustion has become the mainstream in waste stoker incinerators in order to improve boiler efficiencies, while NO_x generation due to high temperature in the furnace has become a new problem. In this study, the NO_x generation behavior derived from nitrogen in char was evaluated by simulating the char combustion area in the incinerator in the combustion experiment of the biomass char sample by DTF (Drop tube Furnace) using the combustion atmosphere as a parameter. In particular, we focused on the effects of high-concentration H₂O and CO₂ concentrations due to exhaust gas recirculation and confirmed that H₂O contributes to the reduction of NO_x emissions.