International Sugar Journal

The influence of gas velocity and fibre density on the drying kinetics of bagasse* [Full subscriber]

Abstract The production efficiency of steam and electricity from cogeneration boilers can be optimised by employing waste heat (in the form of boiler flue gas) for pre-combustion drying of bagasse fibre. Safety and economic concerns demand accurate drying kinetics to guide dryer design and mitigate risk. This research involved the commissioning of a convective drying apparatus to manipulate and control gas temperature, gas velocity and fibre density. Bagasse moisture content was monitored over time and moisture ratio data were fit to Fick’s Second Law of Diffusion. The experimental design was formulated such that the impact of gas velocities and fibre…

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