TY - JOUR
T1 - Coal combustion by-product quality at two stoker boilers
T2 - Coal source vs. fly ash collection system design
AU - Mardon, Sarah M.
AU - Hower, James C.
AU - O'Keefe, Jennifer M.K.
AU - Marks, Maria N.
AU - Hedges, Daniel H.
PY - 2008/9/15
Y1 - 2008/9/15
N2 - Fly ashes from two stoker boilers burning Pennsylvanian Eastern Kentucky high volatile A bituminous coal blends were examined for their petrology and chemistry. The source coals have similar trace element contents. One of the ash collection systems was retrofitted with a baghouse (fabric filter) system, collecting a finer fly ash at a cooler flue gas temperature than the plant that has not been reconfigured. The baghouse ash has a markedly higher trace element content than the coarser fly ash from the other plant. The enhanced trace element content is most notable in the As concentration, reaching nearly 9000 ppm (ash basis) for one of the collection units. Differences in the ash chemistry are not due to any substantial differences in the coal source, even though the coal sources were from different counties and from different coal beds, but rather to the improved pollution control system in the steam plant with the higher trace element contents.
AB - Fly ashes from two stoker boilers burning Pennsylvanian Eastern Kentucky high volatile A bituminous coal blends were examined for their petrology and chemistry. The source coals have similar trace element contents. One of the ash collection systems was retrofitted with a baghouse (fabric filter) system, collecting a finer fly ash at a cooler flue gas temperature than the plant that has not been reconfigured. The baghouse ash has a markedly higher trace element content than the coarser fly ash from the other plant. The enhanced trace element content is most notable in the As concentration, reaching nearly 9000 ppm (ash basis) for one of the collection units. Differences in the ash chemistry are not due to any substantial differences in the coal source, even though the coal sources were from different counties and from different coal beds, but rather to the improved pollution control system in the steam plant with the higher trace element contents.
KW - Arsenic
KW - Bottom ash
KW - Coal
KW - Fly ash
KW - Mercury
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U2 - 10.1016/j.coal.2008.07.004
DO - 10.1016/j.coal.2008.07.004
M3 - Article
AN - SCOPUS:50349086696
SN - 0166-5162
VL - 75
SP - 248
EP - 254
JO - International Journal of Coal Geology
JF - International Journal of Coal Geology
IS - 4
ER -