TY - JOUR N2 - The effective diffusivity of water in brown coal of Bełchatów mine was experimentally determined. The experiments were performed in superheated steam at 200°C and atmospheric pressure using slightly compressed pellets of cylindrical shape. The drying and temperature curves of the sample were used to identify diffusivity. An inverse problem was formulated and solved by the finite element method for 3D axially symmetric cylindrical geometry of the sample. A satisfactory fit of the simulated curves to experimental results was obtained. The obtained dependence of effective diffusivity on moisture content and temperature may be used in designing lignite dryers. L1 - http://www.journals.pan.pl/Content/84675/PDF/04-ZS-paper-Pakowski.pdf L2 - http://www.journals.pan.pl/Content/84675 PY - 2012 IS - No 1 March EP - 51 DO - 10.2478/v10176-012-0004-3 KW - diffusion KW - moisture KW - lignite A1 - Pakowski, Zdzisław A1 - Adamski, Robert A1 - Kwapisz, Stanisław PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2012 T1 - Effective diffusivity of moisture in low rank coal during superheated steam drying at atmospheric pressure SP - 43 UR - http://www.journals.pan.pl/dlibra/publication/edition/84675 T2 - Chemical and Process Engineering ER -