Simulating the transformation of heavy metals during coal or sewage sludge combustion.
A mathematical model (FPM) is presented to predict the transformation of heavy metals in the downstream of combustor or incinerator. The model accounts for the transformation of heavy metals through the combined effect of condensation, nucleation, coagulation, external force and thermophoresis force. The calculation of heavy metals is embodied in the post-processor appended to Fluent soft. Before the simulation, velocity, temperature, PbCl2 concentration and other initial parameters are obtained by experiment. In addition, the transformation of PbCl2 is also experimentally studied. The comparison of experimental and predicted results indicate that the fine particle model (FPM) is valid for predicting the transformation of heavy metals in the downstream of incinerator or combustor.
Han
Jun
J
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China. hanjun77@gmail.com
Xu
Minghou
M
Yao
Hong
H
Furuuchi
Masami
M
Sakano
Takeo
T
Kim
Hee Joon
HJ
D003031:Coal / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D017745:Incineration; D007854:Lead / Q000737:chemistry; D019216:Metals, Heavy / Q000737:chemistry*; D008962:Models, Theoretical; D012722:Sewage / Q000032:analysis*
D003031:Coal; D019216:Metals, Heavy; D012722:Sewage; D007854:Lead; C029891:lead chloride