Modeling devolatilization process of Serbian lignites using chemical percolation devolatilization model
2019
Аутори
Životić, Miodrag M.Trninić, Marta
Manić, Nebojša
Stojiljković, Dragoslava
Jovović, Aleksandar
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Different mathematical models can describe coal devolatilization as the part of combustion process. Some models are simple, while others are more complex and take into account coal's complexity and heterogeneity of structure. A chemical percolation devolatilization model for describing the devolatilization process of two Serbian lignites from Kostolac and Kolubara open coal mines was studied. Results of the model were compared to devolatilization measurements obtained from two experimental methods - a wire mesh reactor and thermogravimetric analysis. Two coal samples with four different granulations were investigated for each lignite under different experimental conditions (different maximum temperatures and heating rates). Total volatile yields obtained from the wire mesh reactor and thermogravimetric analysis together with results predicted by the chemical percolation devolatilization model are presented and compared with literature data. For thermogravimetric analysis simulation, th...e chemical percolation devolatilization model yielded better results in cases where the kinetic parameters obtained under experimental conditions were used rather than kinetic parameters derived from predefined values in the model itself. For wire mesh reactor, the chemical percolation devolatilization model predictions of devolatilization were mixed and were dependent on temperature.
Кључне речи:
wire mesh reactor / thermogravimetric analysis / lignite / devolatilization / chemical percolation devolatilization modelИзвор:
Thermal Science, 2019, 23, S1543-S1557Издавач:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
DOI: 10.2298/TSCI180627195Z
ISSN: 0354-9836
WoS: 000509489400013
Scopus: 2-s2.0-85057114158
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Životić, Miodrag M. AU - Trninić, Marta AU - Manić, Nebojša AU - Stojiljković, Dragoslava AU - Jovović, Aleksandar PY - 2019 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3163 AB - Different mathematical models can describe coal devolatilization as the part of combustion process. Some models are simple, while others are more complex and take into account coal's complexity and heterogeneity of structure. A chemical percolation devolatilization model for describing the devolatilization process of two Serbian lignites from Kostolac and Kolubara open coal mines was studied. Results of the model were compared to devolatilization measurements obtained from two experimental methods - a wire mesh reactor and thermogravimetric analysis. Two coal samples with four different granulations were investigated for each lignite under different experimental conditions (different maximum temperatures and heating rates). Total volatile yields obtained from the wire mesh reactor and thermogravimetric analysis together with results predicted by the chemical percolation devolatilization model are presented and compared with literature data. For thermogravimetric analysis simulation, the chemical percolation devolatilization model yielded better results in cases where the kinetic parameters obtained under experimental conditions were used rather than kinetic parameters derived from predefined values in the model itself. For wire mesh reactor, the chemical percolation devolatilization model predictions of devolatilization were mixed and were dependent on temperature. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Modeling devolatilization process of Serbian lignites using chemical percolation devolatilization model EP - S1557 SP - S1543 VL - 23 DO - 10.2298/TSCI180627195Z ER -
@article{ author = "Životić, Miodrag M. and Trninić, Marta and Manić, Nebojša and Stojiljković, Dragoslava and Jovović, Aleksandar", year = "2019", abstract = "Different mathematical models can describe coal devolatilization as the part of combustion process. Some models are simple, while others are more complex and take into account coal's complexity and heterogeneity of structure. A chemical percolation devolatilization model for describing the devolatilization process of two Serbian lignites from Kostolac and Kolubara open coal mines was studied. Results of the model were compared to devolatilization measurements obtained from two experimental methods - a wire mesh reactor and thermogravimetric analysis. Two coal samples with four different granulations were investigated for each lignite under different experimental conditions (different maximum temperatures and heating rates). Total volatile yields obtained from the wire mesh reactor and thermogravimetric analysis together with results predicted by the chemical percolation devolatilization model are presented and compared with literature data. For thermogravimetric analysis simulation, the chemical percolation devolatilization model yielded better results in cases where the kinetic parameters obtained under experimental conditions were used rather than kinetic parameters derived from predefined values in the model itself. For wire mesh reactor, the chemical percolation devolatilization model predictions of devolatilization were mixed and were dependent on temperature.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Modeling devolatilization process of Serbian lignites using chemical percolation devolatilization model", pages = "S1557-S1543", volume = "23", doi = "10.2298/TSCI180627195Z" }
Životić, M. M., Trninić, M., Manić, N., Stojiljković, D.,& Jovović, A.. (2019). Modeling devolatilization process of Serbian lignites using chemical percolation devolatilization model. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23, S1543-S1557. https://doi.org/10.2298/TSCI180627195Z
Životić MM, Trninić M, Manić N, Stojiljković D, Jovović A. Modeling devolatilization process of Serbian lignites using chemical percolation devolatilization model. in Thermal Science. 2019;23:S1543-S1557. doi:10.2298/TSCI180627195Z .
Životić, Miodrag M., Trninić, Marta, Manić, Nebojša, Stojiljković, Dragoslava, Jovović, Aleksandar, "Modeling devolatilization process of Serbian lignites using chemical percolation devolatilization model" in Thermal Science, 23 (2019):S1543-S1557, https://doi.org/10.2298/TSCI180627195Z . .