A numerical study of pulverized coal ignition by means of plasma torches in air-coal dust mixture ducts of utility boiler furnaces
Апстракт
Paper presents selected results of numerical simulation of processes in air-coal dust mixture duct of pulverized coal utility boiler furnace with plasma-system for pulverized coal ignition and combustion stabilization. Application of the system in utility boiler furnaces promises to achieve important savings compared with the use of heavy oil burners. Plasma torches are built in air-coal dust mixture ducts between coal mills and burners. Calculations have been performed for one of rectangular air-coal dust mixture ducts with two opposite plasma torches, used in 210 MWe utility boiler firing pulverized Serbian lignite. The simulations are based on a three-dimensional mathematical model of mass, momentum and heat transfer in reacting turbulent gas-particle flow, specially developed for the purpose. Characteristics of processes in the duct are analyzed in the paper, with respect to the numerical results. The plasma-system thermal effect is discussed as well, regarding corresponding saving...s of liquid fuel. It has been emphasized that numerical simulation of the processes can be applied in optimization of pulverized coal ignition and combustion stabilization and enables efficient and cost-effective scaling-up procedure from laboratory to industrial scale. (C) 2007 Elsevier Ltd. All rights reserved.
Кључне речи:
modeling / pulverized coal / ignition / plasma torches / utility boilerИзвор:
International Journal of Heat and Mass Transfer, 2008, 51, 7-8, 1970-1978
DOI: 10.1016/j.ijheatmasstransfer.2007.06.003
ISSN: 0017-9310
WoS: 000254725900047
Scopus: 2-s2.0-39749093087
Колекције
Институција/група
VinčaTY - JOUR AU - Belošević, Srđan AU - Sijercic, Miroslav AU - Stefanović, Predrag Lj. PY - 2008 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3403 AB - Paper presents selected results of numerical simulation of processes in air-coal dust mixture duct of pulverized coal utility boiler furnace with plasma-system for pulverized coal ignition and combustion stabilization. Application of the system in utility boiler furnaces promises to achieve important savings compared with the use of heavy oil burners. Plasma torches are built in air-coal dust mixture ducts between coal mills and burners. Calculations have been performed for one of rectangular air-coal dust mixture ducts with two opposite plasma torches, used in 210 MWe utility boiler firing pulverized Serbian lignite. The simulations are based on a three-dimensional mathematical model of mass, momentum and heat transfer in reacting turbulent gas-particle flow, specially developed for the purpose. Characteristics of processes in the duct are analyzed in the paper, with respect to the numerical results. The plasma-system thermal effect is discussed as well, regarding corresponding savings of liquid fuel. It has been emphasized that numerical simulation of the processes can be applied in optimization of pulverized coal ignition and combustion stabilization and enables efficient and cost-effective scaling-up procedure from laboratory to industrial scale. (C) 2007 Elsevier Ltd. All rights reserved. T2 - International Journal of Heat and Mass Transfer T1 - A numerical study of pulverized coal ignition by means of plasma torches in air-coal dust mixture ducts of utility boiler furnaces VL - 51 IS - 7-8 SP - 1970 EP - 1978 DO - 10.1016/j.ijheatmasstransfer.2007.06.003 ER -
@article{ author = "Belošević, Srđan and Sijercic, Miroslav and Stefanović, Predrag Lj.", year = "2008", abstract = "Paper presents selected results of numerical simulation of processes in air-coal dust mixture duct of pulverized coal utility boiler furnace with plasma-system for pulverized coal ignition and combustion stabilization. Application of the system in utility boiler furnaces promises to achieve important savings compared with the use of heavy oil burners. Plasma torches are built in air-coal dust mixture ducts between coal mills and burners. Calculations have been performed for one of rectangular air-coal dust mixture ducts with two opposite plasma torches, used in 210 MWe utility boiler firing pulverized Serbian lignite. The simulations are based on a three-dimensional mathematical model of mass, momentum and heat transfer in reacting turbulent gas-particle flow, specially developed for the purpose. Characteristics of processes in the duct are analyzed in the paper, with respect to the numerical results. The plasma-system thermal effect is discussed as well, regarding corresponding savings of liquid fuel. It has been emphasized that numerical simulation of the processes can be applied in optimization of pulverized coal ignition and combustion stabilization and enables efficient and cost-effective scaling-up procedure from laboratory to industrial scale. (C) 2007 Elsevier Ltd. All rights reserved.", journal = "International Journal of Heat and Mass Transfer", title = "A numerical study of pulverized coal ignition by means of plasma torches in air-coal dust mixture ducts of utility boiler furnaces", volume = "51", number = "7-8", pages = "1970-1978", doi = "10.1016/j.ijheatmasstransfer.2007.06.003" }
Belošević, S., Sijercic, M.,& Stefanović, P. Lj.. (2008). A numerical study of pulverized coal ignition by means of plasma torches in air-coal dust mixture ducts of utility boiler furnaces. in International Journal of Heat and Mass Transfer, 51(7-8), 1970-1978. https://doi.org/10.1016/j.ijheatmasstransfer.2007.06.003
Belošević S, Sijercic M, Stefanović PL. A numerical study of pulverized coal ignition by means of plasma torches in air-coal dust mixture ducts of utility boiler furnaces. in International Journal of Heat and Mass Transfer. 2008;51(7-8):1970-1978. doi:10.1016/j.ijheatmasstransfer.2007.06.003 .
Belošević, Srđan, Sijercic, Miroslav, Stefanović, Predrag Lj., "A numerical study of pulverized coal ignition by means of plasma torches in air-coal dust mixture ducts of utility boiler furnaces" in International Journal of Heat and Mass Transfer, 51, no. 7-8 (2008):1970-1978, https://doi.org/10.1016/j.ijheatmasstransfer.2007.06.003 . .