Modelling of char beds

The project has consisted of the establishment of a series of mathematical descriptions of char beds, starting with relatively simple steady models, to models of increasing complexity including unsteady effects, gas-solid heat exchange and reaction kinetics of wood and char. The project has reached the intended objectives: The knowledge gained by establishing these models constitutes a sound foundation upon which futher modelling activities can be based. Application of the model has lead to a number of concrete results including a novel control strategy for the gasifier. The experimental data on the kinetics of wood gasification are unique and contribute importantly to the basic knowledge in the field