Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace
Аутори
Milićević, AleksandarBelošević, Srđan
Tomanović, Ivan D.
Crnomarković, Nenad Đ.
Tucaković, Dragan R.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
A comprehensive mathematical model for prediction of turbulent transport processes and reactions during co-combustion of pulverized fuels in furnace fired by 150 kW swirl stabilized-burner has been developed. Numerical simulations have been carried out by using an in-house developed computer code, with Euler-Lagrangian approach to the two-phase flow modelling and sub-models for individual phases during complex combustion process: evaporation, devolatilization, combustion of volatiles, and char combustion. For sub-model of coal devolatilization the approach of Merrick is adopted, while for biomass devolatilization the combination models of Merrick, and of Xu and Tomita are selected. Products of devolatilization of both the pulverized coal and biomass are considered to contain the primary gaseous volatiles and tar, which further decomposes to secondary gaseous volatiles and residual soot. The residual soot in tar and carbon in coal and biomass char are oxidized directly, with ash remaini...ng. For volatiles combustion the finite rate/eddy break-up model is chosen, while for char oxidation the combined kinetic-diffusion model is used. The comprehensive combustion model is validated against available experimental data from the case-study cylindrical furnace. The agreement of the simulations with the data for the main species in the furnace is quite good, while some discrepancies from experimental values are found in the core zone. The presented model is a good basis for further research of co-combustion processes and is able to provide analysis of wide range of pulverized fuels, i. e. coal and biomass. At the same time, the model is relatively simple numerical tool for effective and practical use.
Кључне речи:
co-firing / modelling / pu / swirl burner / validation / biomass / experimental furnace / devolatilization / tar / sootИзвор:
Thermal Science, 2018, 22, 1 (Part B), 709-719Финансирање / пројекти:
- Повећање енергетске и еколошке ефикасности процеса у ложишту за угљени прах и оптимизација излазне грејне површине енергетског парног котла применом сопствених софтверских алата (RS-MESTD-Technological Development (TD or TR)-33018)
DOI: 10.2298/TSCI170525206M
ISSN: 0354-9836; 2334-7163
WoS: 000429384500032
Scopus: 2-s2.0-85045313150
URI
http://www.doiserbia.nb.rs/Article.aspx?ID=0354-98361700206Mhttps://vinar.vin.bg.ac.rs/handle/123456789/7628
Колекције
Институција/група
VinčaTY - JOUR AU - Milićević, Aleksandar AU - Belošević, Srđan AU - Tomanović, Ivan D. AU - Crnomarković, Nenad Đ. AU - Tucaković, Dragan R. PY - 2018 UR - http://www.doiserbia.nb.rs/Article.aspx?ID=0354-98361700206M UR - https://vinar.vin.bg.ac.rs/handle/123456789/7628 AB - A comprehensive mathematical model for prediction of turbulent transport processes and reactions during co-combustion of pulverized fuels in furnace fired by 150 kW swirl stabilized-burner has been developed. Numerical simulations have been carried out by using an in-house developed computer code, with Euler-Lagrangian approach to the two-phase flow modelling and sub-models for individual phases during complex combustion process: evaporation, devolatilization, combustion of volatiles, and char combustion. For sub-model of coal devolatilization the approach of Merrick is adopted, while for biomass devolatilization the combination models of Merrick, and of Xu and Tomita are selected. Products of devolatilization of both the pulverized coal and biomass are considered to contain the primary gaseous volatiles and tar, which further decomposes to secondary gaseous volatiles and residual soot. The residual soot in tar and carbon in coal and biomass char are oxidized directly, with ash remaining. For volatiles combustion the finite rate/eddy break-up model is chosen, while for char oxidation the combined kinetic-diffusion model is used. The comprehensive combustion model is validated against available experimental data from the case-study cylindrical furnace. The agreement of the simulations with the data for the main species in the furnace is quite good, while some discrepancies from experimental values are found in the core zone. The presented model is a good basis for further research of co-combustion processes and is able to provide analysis of wide range of pulverized fuels, i. e. coal and biomass. At the same time, the model is relatively simple numerical tool for effective and practical use. T2 - Thermal Science T1 - Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace VL - 22 IS - 1 (Part B) SP - 709 EP - 719 DO - 10.2298/TSCI170525206M ER -
@article{ author = "Milićević, Aleksandar and Belošević, Srđan and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Tucaković, Dragan R.", year = "2018", abstract = "A comprehensive mathematical model for prediction of turbulent transport processes and reactions during co-combustion of pulverized fuels in furnace fired by 150 kW swirl stabilized-burner has been developed. Numerical simulations have been carried out by using an in-house developed computer code, with Euler-Lagrangian approach to the two-phase flow modelling and sub-models for individual phases during complex combustion process: evaporation, devolatilization, combustion of volatiles, and char combustion. For sub-model of coal devolatilization the approach of Merrick is adopted, while for biomass devolatilization the combination models of Merrick, and of Xu and Tomita are selected. Products of devolatilization of both the pulverized coal and biomass are considered to contain the primary gaseous volatiles and tar, which further decomposes to secondary gaseous volatiles and residual soot. The residual soot in tar and carbon in coal and biomass char are oxidized directly, with ash remaining. For volatiles combustion the finite rate/eddy break-up model is chosen, while for char oxidation the combined kinetic-diffusion model is used. The comprehensive combustion model is validated against available experimental data from the case-study cylindrical furnace. The agreement of the simulations with the data for the main species in the furnace is quite good, while some discrepancies from experimental values are found in the core zone. The presented model is a good basis for further research of co-combustion processes and is able to provide analysis of wide range of pulverized fuels, i. e. coal and biomass. At the same time, the model is relatively simple numerical tool for effective and practical use.", journal = "Thermal Science", title = "Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace", volume = "22", number = "1 (Part B)", pages = "709-719", doi = "10.2298/TSCI170525206M" }
Milićević, A., Belošević, S., Tomanović, I. D., Crnomarković, N. Đ.,& Tucaković, D. R.. (2018). Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace. in Thermal Science, 22(1 (Part B)), 709-719. https://doi.org/10.2298/TSCI170525206M
Milićević A, Belošević S, Tomanović ID, Crnomarković NĐ, Tucaković DR. Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace. in Thermal Science. 2018;22(1 (Part B)):709-719. doi:10.2298/TSCI170525206M .
Milićević, Aleksandar, Belošević, Srđan, Tomanović, Ivan D., Crnomarković, Nenad Đ., Tucaković, Dragan R., "Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace" in Thermal Science, 22, no. 1 (Part B) (2018):709-719, https://doi.org/10.2298/TSCI170525206M . .