Experimental study on drying and moisture re-adsorption kinetics of an Indonesian low rank coal |
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| Authors: | Xianchun LI Hui SONG Qi WANG Chatphol MEESRI Terry WALL Jianglong YU |
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| Affiliation: | 1. Thermal Energy Research Centre, Shenyang Aerospace University, Shenyang 110136, PR China;2. Key Laboratory of Advanced Coal and Coking Technology of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, PR China;3. Chemical Engineering, University of Newcastle, Callaghan, NSW 2308, Australia |
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| Abstract: | The drying kinetics of an Indonesian low rank coal and moisture re-adsorption of the dried coal using a thermobalance and a climatic chamber were investigated. Results show that the drying kinetics is best represented by two stages, as a constatnt rate stage followed by a rate decay stage. The water removal rate is dependent mainly on drying temperature and coal sample size. The apparent activation energy (E) of drying was 26.58 kJ/mol. A rate equation for drying of the coal was obtained from the experimental data. The moisture re-adsorption rate was dependent on drying temperature, coal particle size, and relative humidity of the atmosphere. |
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