title: Characteristics of fundamental combustion and NOx emission using various rank coals.
abstract: Eight types of coals of different rank were selected and their fundamental combustion characteristics were examined along with the conversion of volatile nitrogen (N) to nitrogen oxides (NOx)/fuel N to NOx. The activation energy, onset temperature, and burnout temperature were obtained from the differential thermogravimetry curve and Arrhenius plot, which were derived through thermo-gravimetric analysis. In addition, to derive the combustion of volatile N to NOx/fuel N to NOx, the coal sample, which was pretreated at various temperatures, was burned, and the results were compared with previously derived fundamental combustion characteristics. The authors' experimental results confirmed that coal rank was highly correlated with the combustion of volatile N to NOx/fuel N to NOx.
authors.affiliation: Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University, Gyeonggi-do, Korea.
authors.forename: Sung Su
authors.initials: SS
authors.lastname: Kim
authors.forename: Youn Suk
authors.initials: YS
authors.lastname: Kang
authors.forename: Hyun Dong
authors.initials: HD
authors.lastname: Lee
authors.forename: Jae-Kwan
authors.initials: JK
authors.lastname: Kim
authors.forename: Sung Chang
authors.initials: SC
authors.lastname: Hong
mesh_terms: D003031:Coal / Q000706:statistics & numerical data*; D009584:Nitrogen / Q000032:analysis; D009589:Nitrogen Oxides / Q000032:analysis*
chemical_list: D003031:Coal; D009589:Nitrogen Oxides; D009584:Nitrogen