An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies
Abstract
Despite benefiting from vast fuel reserves, combustion of low-rank coals is commonly characterized by low thermal efficiency and high pollutant emissions, partly due to high moisture content of the coals in question. Thus, removal of moisture from low-rank coals is deemed an important quality upgrading method. The paper provides an overview of the current status of low-rank coal upgrading technologies, particularly with respect to utilization of drying and dewatering procedures. In order to examine the influence of relevant parameters on the moisture removal process, a model of convective coal drying in a packed, as well as in a fluid bed combustion arrangement, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the coal variety addressed herein (lignite) are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlunder is used to define heat tran...sfer mechanisms occurring in the packed bed. Similar two-phase fluidization model has been validated for different types of biomaterials. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Keywords:
Coal drying / Thermal treatment / Moisture transfer / Fluid bed / ModelingSource:
Chemical Engineering Research and Design, 2014, 92, 11, 2383-2395Funding / 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-MESTD-Technological Development (TD or TR)-33050)
- Development and improvement of technologies for energy efficient and environmentally sound use of several types of agricultural and forest biomass and possible utilization for cogeneration (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-42011)
DOI: 10.1016/j.cherd.2014.02.032
ISSN: 0263-8762; 1744-3563
WoS: 000345725500032
Scopus: 2-s2.0-84912564847
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Institution/Community
VinčaTY - JOUR AU - Stakic, Milan AU - Cvetinović, Dejan AU - Škobalj, Predrag D. AU - Spasojević, Vuk D. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/243 AB - Despite benefiting from vast fuel reserves, combustion of low-rank coals is commonly characterized by low thermal efficiency and high pollutant emissions, partly due to high moisture content of the coals in question. Thus, removal of moisture from low-rank coals is deemed an important quality upgrading method. The paper provides an overview of the current status of low-rank coal upgrading technologies, particularly with respect to utilization of drying and dewatering procedures. In order to examine the influence of relevant parameters on the moisture removal process, a model of convective coal drying in a packed, as well as in a fluid bed combustion arrangement, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the coal variety addressed herein (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 packed bed. Similar two-phase fluidization model has been validated for different types of biomaterials. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. T2 - Chemical Engineering Research and Design T1 - An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies VL - 92 IS - 11 SP - 2383 EP - 2395 DO - 10.1016/j.cherd.2014.02.032 ER -
@article{ author = "Stakic, Milan and Cvetinović, Dejan and Škobalj, Predrag D. and Spasojević, Vuk D.", year = "2014", abstract = "Despite benefiting from vast fuel reserves, combustion of low-rank coals is commonly characterized by low thermal efficiency and high pollutant emissions, partly due to high moisture content of the coals in question. Thus, removal of moisture from low-rank coals is deemed an important quality upgrading method. The paper provides an overview of the current status of low-rank coal upgrading technologies, particularly with respect to utilization of drying and dewatering procedures. In order to examine the influence of relevant parameters on the moisture removal process, a model of convective coal drying in a packed, as well as in a fluid bed combustion arrangement, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the coal variety addressed herein (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 packed bed. Similar two-phase fluidization model has been validated for different types of biomaterials. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.", journal = "Chemical Engineering Research and Design", title = "An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies", volume = "92", number = "11", pages = "2383-2395", doi = "10.1016/j.cherd.2014.02.032" }
Stakic, M., Cvetinović, D., Škobalj, P. D.,& Spasojević, V. D.. (2014). An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies. in Chemical Engineering Research and Design, 92(11), 2383-2395. https://doi.org/10.1016/j.cherd.2014.02.032
Stakic M, Cvetinović D, Škobalj PD, Spasojević VD. An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies. in Chemical Engineering Research and Design. 2014;92(11):2383-2395. doi:10.1016/j.cherd.2014.02.032 .
Stakic, Milan, Cvetinović, Dejan, Škobalj, Predrag D., Spasojević, Vuk D., "An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies" in Chemical Engineering Research and Design, 92, no. 11 (2014):2383-2395, https://doi.org/10.1016/j.cherd.2014.02.032 . .