Thermogravimetric Analysis of Tobacco Combustion Assuming DAEM Devolatilization and Empirical Char-Burnoff Kinetics

摘要: Two blends of tobacco (Virginia and Burley) were studied by thermogravimetry at linear nonlinear heating programs in gas flows containing 2, 4, 9% oxygen. A kinetic scheme successive devolatilization char-burnoff reactions was assumed. distributed activation energy model assumed for with a Gaussian distribution constant preexponential factor. The evaluations also carried out using nonconstant factors that depended on the energy. char burnoff described first-order kinetics an empirical took into account change reactivity conversion sample. dependence rate combustion oxygen concentration approximated power function. Series 15 30 experiments used determination parameters simultaneous least-squares evaluation experiments. considerations, methods, results can be fields biomass gasificat...