000 01736nab a2200193 4500
005 20260520000827.0
008 260224s2009 xxu
245 0 0 _aEmission control of mercury and sulfur by mild thermal upgrading of coal
260 _a
_b
_cene. 2009
270 _a24/07/2009 ; 24/07/2009
300 _a7 p. ; 766-773
520 _aTranscripción del resúmen publicado por el autor: Mercury and sulfur emissions from power plants is becoming increasingly an environmental concern. In this study, two Chinese coals from the Guizhou province and one Canadian coal from Alberta were selected to study the potential of thermal upgrading as mercury and sulfur emission control strategy prior to coal use. A low-temperature asher (LTA) and X-ray diffractometer (XRD) were used to characterize the occurrence of mercury and sulfur in coal. An experiment of mild thermal upgrading at different atmospheres was performed to explore the removal efficiencies of mercury before combustion. Our study shows that mercury is associated with different minerals in these coal samples. The correlation between mercury and sulfur is also investigated. Mercury was found to be removed effectively by mild thermal upgrading at 400 °C under a 4% O2-N2 atmosphere. An oxidizing atmosphere increased the removal of pyritic sulfur significantly at low temperatures. The mercury release rate was found to be higher under an oxidizing atmosphere than under a nitrogen atmosphere between 300 and 400 °C during mild thermal upgrading.
773 0 _tEnergy & fuels
_g23
942 _cARTICULO
100 1 _aZhang, Cheng
_938078
100 1 _aChen, Gang
_938079
100 1 _aGupta, Rajender
_938071
999 _c170193
_d170193