Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite
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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/Schlunder 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.
Keywords:
low-rank coal / moisture removal / drying coefficient / fluid bedSource:
Thermal Science, 2016, 20, S167-S181Funding / projects:
- Domestic Lignite Quality and Combustion Technology Enhancement for Energy Efficiency Increase and Reduction of Harmful Gases and Particulate Matter Emissions from Thermal Power Plants of Public Enterprise ”Electric Power Industry of Serbia” (RS-33050)
- Pollution Reduction from Thermal Power Plants of the Public Enterprise “Electric Power Industry of Serbia” (RS-42010)
DOI: 10.2298/TSCI150725172E
ISSN: 0354-9836; 2334-7163
WoS: 000378584200016
Scopus: 2-s2.0-85082370747
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VinčaTY - JOUR AU - Erić, Milić D. AU - Stakić, Milan B. AU - Banjac, Miloš J. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1142 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/Schlunder 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. T2 - Thermal Science T1 - Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite VL - 20 SP - S167 EP - S181 DO - 10.2298/TSCI150725172E ER -
@article{ author = "Erić, Milić D. and Stakić, Milan B. and Banjac, Miloš J.", year = "2016", abstract = "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/Schlunder 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.", journal = "Thermal Science", title = "Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite", volume = "20", pages = "S167-S181", doi = "10.2298/TSCI150725172E" }
Erić, M. D., Stakić, M. B.,& Banjac, M. J.. (2016). Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite. in Thermal Science, 20, S167-S181. https://doi.org/10.2298/TSCI150725172E
Erić MD, Stakić MB, Banjac MJ. Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite. in Thermal Science. 2016;20:S167-S181. doi:10.2298/TSCI150725172E .
Erić, Milić D., Stakić, Milan B., Banjac, Miloš J., "Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite" in Thermal Science, 20 (2016):S167-S181, https://doi.org/10.2298/TSCI150725172E . .