TY - JOUR
T1 - Investigation of MSWI fly ash melting characteristic by DSC-DTA
AU - Li, Rundong
AU - Wang, Lei
AU - Yang, Tianhua
AU - Raninger, Bernhard
PY - 2007
Y1 - 2007
N2 - The melting process of MSWI (Municipal Solid Waste Incineration) fly ash has been studied by high-temperature DSC-DTA experiments. The experiments were performed at a temperature range of 20-1450 °C, and the considerable variables included atmosphere (O2 and N2), heating rates (5 °C/min, 10 °C/min, 20 °C/min) and CaO addition. Three main transitions were observed during the melting process of fly ash: dehydration, polymorphic transition and fusion, occurring in the temperature range of 100-200 °C, 480-670 °C and 1101-1244 °C, respectively. The apparent heat capacity and heat requirement for melting of MSWI fly ash were obtained by DSC (Differential Scanning Calorimeter). A thermodynamic modeling to predict the heat requirements for melting process has been presented, and it agrees well with the experimental data. Finally, a zero-order kinetic model of fly ash melting transition was established. The apparent activation energy of MSWI fly ash melting transition was obtained.
AB - The melting process of MSWI (Municipal Solid Waste Incineration) fly ash has been studied by high-temperature DSC-DTA experiments. The experiments were performed at a temperature range of 20-1450 °C, and the considerable variables included atmosphere (O2 and N2), heating rates (5 °C/min, 10 °C/min, 20 °C/min) and CaO addition. Three main transitions were observed during the melting process of fly ash: dehydration, polymorphic transition and fusion, occurring in the temperature range of 100-200 °C, 480-670 °C and 1101-1244 °C, respectively. The apparent heat capacity and heat requirement for melting of MSWI fly ash were obtained by DSC (Differential Scanning Calorimeter). A thermodynamic modeling to predict the heat requirements for melting process has been presented, and it agrees well with the experimental data. Finally, a zero-order kinetic model of fly ash melting transition was established. The apparent activation energy of MSWI fly ash melting transition was obtained.
UR - http://www.scopus.com/inward/record.url?scp=34547095247&partnerID=8YFLogxK
U2 - 10.1016/j.wasman.2006.11.017
DO - 10.1016/j.wasman.2006.11.017
M3 - 文章
C2 - 17346958
AN - SCOPUS:34547095247
SN - 0956-053X
VL - 27
SP - 1383
EP - 1392
JO - Waste Management
JF - Waste Management
IS - 10
ER -
