Abstract
In this study, a 100MW class gas turbine DLN combustor, which is widely operated for the use of power generation, was tested to analyze variations of the concentration of emissions such as unburned hydrocarbon(UHC), carbon monoxide, and nitrogen oxide. Concentrations of emissions were measured through changing influencing factors at each load ; pilot fuel fraction and combustion air flow. The result showed that it was effective for the purpose of decreasing UHC, and carbon monoxide to increase pilot fuel fraction at no load and light load, whereas to decrease combustion air flow at higher load. It also indicated that pilot fuel fraction had a great proportional effect on nitrogen oxide emission concentration, but the combustion air flow had an inversely proportional relationship with it.
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