GASIFIERS
GASIFIERS
Biomass and other gasifier technologies also rely on chemical or reaction kinetics, and hence thousands of reaction variables that require modelling to enable increased performance and efficiency, particularly in efforts to make these technologies more competitive over traditional state of the art, such as fossil fuel energy production or landfilling / incineration of waste.
Schematic steps of biomass gasification.
As an example, Wang and Kinoshita (1993) describe a kinetic model for biomass gasification developed based on the mechanism of surface reactions. The apparent rate constants are computed by minimising the differences between experimental data and theoretical results for different residence times and different temperatures. The kinetic model is validated by comparing experimental data with the theoretical results for different equivalence ratios. Simulations are performed to evaluate the effects of: (a) type of oxidant, (b) residence time, (c) char particle size, (d) temperature, (e) pressure, (f) equivalence ratio, and (g) moisture.
For more information on direct chemical kinetics example applications, follow the FACSIMILE Applications links: