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A particulate model of solid waste incineration in a fluidized bed combining combustion and heavy metal vaporization

A particulate model of solid waste incineration in a fluidized bed combining combustion and heavy metal vaporization

Authors :
Mazza, G.
Falcoz, Q.
Gauthier, D.
Flamant, G.
Source :
Combustion & Flame. Nov2009, Vol. 156 Issue 11, p2084-2092. 9p.
Publication Year :
2009

Abstract

Abstract: This study aims to develop a particulate model combining solid waste particle combustion and heavy metal vaporization from burning particles during MSW incineration in a fluidized bed. The original approach for this model combines an asymptotic combustion model for the carbonaceous solid combustion and a shrinking core model to describe the heavy metal vaporization. A parametric study is presented. The global metal vaporization process is strongly influenced by temperature. Internal mass transfer controls the metal vaporization rate at low temperatures. At high temperatures, the chemical reactions associated with particle combustion control the metal vaporization rate. A comparison between the simulation results and experimental data obtained with a laboratory-scale fluid bed incinerator and Cd-spiked particles shows that the heavy metal vaporization is correctly predicted by the model. The predictions are better at higher temperatures because of the temperature gradient inside the particle. Future development of the model will take this into account. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00102180
Volume :
156
Issue :
11
Database :
Academic Search Index
Journal :
Combustion & Flame
Publication Type :
Academic Journal
Accession number :
44418107
Full Text :
https://doi.org/10.1016/j.combustflame.2009.04.003