Development of non-CO2 emission factors from MSW pyrolysis melting treatment in Korea

In Korea, few investigations from the waste incineration were conducted on greenhouse gas emitted. This research calculates and compares non-CO2 concentrations and emission factors for the facilities of an incinerator comprising a pyrolysis melting incineration type (incinerator A) and a stoker incineration type (incinerator B). An analysis was made of daily average concentrations of the samples collected over a 24-h period, and the results show that incinerator A had a CH4 concentration of about 1.9 ppm and a N2O concentration of about 1.2 ppm; incinerator B had a CH4 concentration of about 2.1 ppm and a N2O concentration of about 4.5 ppm. A pyrolysis melting incineration type showed a similar value to the emission factor derived from a gasification melting furnace suggested by NIR in Japan, and there is about a 5.1 times difference between the pyrolysis melting incineration type and the stoker incineration type used in this study. This implies that, when the same default emission factor is applied without giving consideration to the characteristics of each incinerator, greenhouse gas emissions may be excessively calculated.