TY - JOUR
T1 - Field and laboratory simulation study of hot spots in stockpiled bituminous coal
AU - Green, Uri
AU - Aizenshtat, Zeev
AU - Metzger, Lionel
AU - Cohen, Haim
PY - 2012/12/20
Y1 - 2012/12/20
N2 - Large coal piles (50-150 000 tons) undergo weathering processes during long-term storage in open air. Chemisorption of atmospheric oxygen, formation of surface oxides, and partial oxidative decomposition of the coal macromolecule matrix result in the release of organic and inorganic gases [e.g., methane (CH4), ethylene (C2H4), ethane (C 2H6), carbon dioxide (CO2), carbon monoxide (CO), and hydrogen (H2)]. Some of these processes are exothermic, and when the rate of heat dissipation in the pile is lower than that of its formation, a significant increase in the temperature can be measured. These places are termed "hot spots", which, in extreme cases, can result in fire eruptions. The maximal temperature measured in the hot spots was 330 °C. Monitoring of hot spots at the Israel Electric Company (IEC) bituminous coal storage sites has been conducted. A unique monitoring unit that can penetrate up to 8 m into the coal pile to sample gases and also measure the temperature was used.
AB - Large coal piles (50-150 000 tons) undergo weathering processes during long-term storage in open air. Chemisorption of atmospheric oxygen, formation of surface oxides, and partial oxidative decomposition of the coal macromolecule matrix result in the release of organic and inorganic gases [e.g., methane (CH4), ethylene (C2H4), ethane (C 2H6), carbon dioxide (CO2), carbon monoxide (CO), and hydrogen (H2)]. Some of these processes are exothermic, and when the rate of heat dissipation in the pile is lower than that of its formation, a significant increase in the temperature can be measured. These places are termed "hot spots", which, in extreme cases, can result in fire eruptions. The maximal temperature measured in the hot spots was 330 °C. Monitoring of hot spots at the Israel Electric Company (IEC) bituminous coal storage sites has been conducted. A unique monitoring unit that can penetrate up to 8 m into the coal pile to sample gases and also measure the temperature was used.
UR - http://www.scopus.com/inward/record.url?scp=84871543747&partnerID=8YFLogxK
U2 - 10.1021/ef301474t
DO - 10.1021/ef301474t
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AN - SCOPUS:84871543747
SN - 0887-0624
VL - 26
SP - 7230
EP - 7235
JO - Energy and Fuels
JF - Energy and Fuels
IS - 12
ER -