Thermoanalytical study of drying kinetics of lignocellulosic fuels

Abstract

Lignocellulosic matter is usually hydrophilic, so its drying, in addition to the heat of the phase transition for water, also requires compensation of adsorption energy. In the present work experimental studies have been carried out to quantify the moisture adsorption energy, for wood sawdust, cellulose and lignin with varying moisture content. The experiments were performed on the basis of a thermal analysis complex STA449F1. The data were obtained for isothermal drying conditions at different temperatures. A mathematical model is proposed for the evaporation rate of various water energy forms in lignocellulosic fuel. A method is proposed for the experimental determination of the binding energy of water molecules with organic matter and its dependence on moisture content.