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A Study on Drying Kinetics of Low Rank Coal(Indonesia-IBC) through the Fixed-Bed Reactor Experiments  

Kang, Tae-Jin (Division of energy System Research, Ajou Univ.)
Jeon, Do-Man (Division of energy System Research, Ajou Univ.)
Jeon, Young-Sin (Division of energy System Research, Ajou Univ.)
Kang, Suk-Hwan (Institute for Advanced Engineering)
Lee, Si-Hyun (Korea Institute of Energy Research)
Kim, Sang-Do (Korea Institute of Energy Research)
Kim, Hyung-Taek (Division of energy System Research, Ajou Univ.)
Publication Information
Resources Recycling / v.19, no.6, 2010 , pp. 43-50 More about this Journal
Abstract
The crisis of energy gives rise to the growing concerns over continuing uncertainty in the energy market. Under these circumstances, there are also increasing interests on coals. In particular, Low Rank Coal (LRC) is receiving gradual attentions from green industry. But due to is high moisture content range from 30 - 60%, drying process has to be preceded before being utilized as power plant. In this study drying kinetics of LRC is induced by using a fixed-bed reactor. The drying kinetics was evaluated in from of the particle size, the inlet gas temperature, the drying time, the gas velocity, and the LID ratio. The consideration of the reynold's number was taken for correction of gas velocity, particle size and LID was taken for correction of reactor diameter, packing height of coal. As being seen as characteristic of drying coal, it can be found that fixed-bed reactor can contributed to active drying of free water. In this sense, it could be considered that phase boundary reaction is appropriate mechanism.
Keywords
low rank coal; drying; fixed-bed reactor; drying mechanism; drying kinetics;
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