TY - JOUR
TI - Fluid bed drying as upgrading technology for feasible treatment of Kolubara lignite
AU - Erić Milić D
AU - Stakić Milan B
AU - Banjac Miloš J
JN - Thermal Science
PY - 2016
VL - 20
IS - 11
SP - 167
EP - 181
PT - Article
AB - An overview of the current status of low-rank coal upgrading technologies is  presented in the paper, particularly with respect to drying and dewatering  procedures. In order to calculate the significant parameters of the moisture  removal process, a model of convective coal drying in a fluid bed, based on  the two-phase (bubbling) fluidization model proposed by Kunii and Levenspiel,  is developed and presented. Product-specific data (intraparticle mass  transfer, gas-solid moisture equilibrium) related to the particular coal  variety addressed here (Kolubara lignite) are obtained through preliminary  investigations. Effective thermal conductivity of the packed bed as defined  by Zehner/Bauer/Schlünder is used to define heat transfer mechanisms  occurring in the suspension phase of the fluid bed. A completely new set of  experimental data obtained has been successfully used to validate the model  additionally. [Projekat Ministarstva nauke Republike Srbije, br. TR33050 i  III42010]