Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers
2016
Преузимање 🢃
Аутори
Belošević, SrđanTomanović, Ivan D.
Crnomarković, Nenad Đ.
Milićević, Aleksandar
Tucaković, Dragan R.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Pulverized coal-fired power plants should provide higher efficiency of energy conversion, flexibility in terms of boiler loads and fuel characteristics and emission reduction of pollutants like nitrogen oxides. Modification of combustion process is a cost-effective technology for NOx control. For optimization of complex processes, such as turbulent reactive flow in coal-fired furnaces, mathematical modeling is regularly used The NOx emission reduction by combustion modifications in the 350 MWe Kostolac B boiler furnace, tangentially fired by pulverized Serbian lignite, is investigated in the paper. Numerical experiments were done by an in-house developed 3-D differential comprehensive combustion code, with fuel- and thermal-NO formation/destruction reactions model. The code was developed to be easily used by engineering staff for process analysis in boiler units. A broad range of operating conditions was examined, such as fuel and preheated air distribution over the burners and tiers, ...operation mode of the burners, grinding fineness and quality of coal, boiler loads, cold air ingress, recirculation of flue gases, water-walls ash deposition and combined effect of different parameters. The predictions show that the NOx emission reduction of up to 30% can be achieved by a proper combustion organization in the case-study furnace, with the flame position control. Impact of combustion modifications on the boiler operation was evaluated by the boiler thermal calculations suggesting that the facility was to be controlled within narrow limits of operation parameters. Such a complex approach to pollutants control enables evaluating alternative solutions to achieve efficient and low emission operation of utility boiler units.
Кључне речи:
modeling / pulverized coal combustion / NOx emission reduction / furnace / utility boiler efficiencyИзвор:
Thermal Science, 2016, 20, S183-S196Финансирање / 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/TSCI150604223B
ISSN: 0354-9836; 2334-7163
WoS: 000378584200017
Scopus: 2-s2.0-84982845033
Колекције
Институција/група
VinčaTY - JOUR AU - Belošević, Srđan AU - Tomanović, Ivan D. AU - Crnomarković, Nenad Đ. AU - Milićević, Aleksandar AU - Tucaković, Dragan R. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1143 AB - Pulverized coal-fired power plants should provide higher efficiency of energy conversion, flexibility in terms of boiler loads and fuel characteristics and emission reduction of pollutants like nitrogen oxides. Modification of combustion process is a cost-effective technology for NOx control. For optimization of complex processes, such as turbulent reactive flow in coal-fired furnaces, mathematical modeling is regularly used The NOx emission reduction by combustion modifications in the 350 MWe Kostolac B boiler furnace, tangentially fired by pulverized Serbian lignite, is investigated in the paper. Numerical experiments were done by an in-house developed 3-D differential comprehensive combustion code, with fuel- and thermal-NO formation/destruction reactions model. The code was developed to be easily used by engineering staff for process analysis in boiler units. A broad range of operating conditions was examined, such as fuel and preheated air distribution over the burners and tiers, operation mode of the burners, grinding fineness and quality of coal, boiler loads, cold air ingress, recirculation of flue gases, water-walls ash deposition and combined effect of different parameters. The predictions show that the NOx emission reduction of up to 30% can be achieved by a proper combustion organization in the case-study furnace, with the flame position control. Impact of combustion modifications on the boiler operation was evaluated by the boiler thermal calculations suggesting that the facility was to be controlled within narrow limits of operation parameters. Such a complex approach to pollutants control enables evaluating alternative solutions to achieve efficient and low emission operation of utility boiler units. T2 - Thermal Science T1 - Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers VL - 20 SP - S183 EP - S196 DO - 10.2298/TSCI150604223B ER -
@article{ author = "Belošević, Srđan and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Milićević, Aleksandar and Tucaković, Dragan R.", year = "2016", abstract = "Pulverized coal-fired power plants should provide higher efficiency of energy conversion, flexibility in terms of boiler loads and fuel characteristics and emission reduction of pollutants like nitrogen oxides. Modification of combustion process is a cost-effective technology for NOx control. For optimization of complex processes, such as turbulent reactive flow in coal-fired furnaces, mathematical modeling is regularly used The NOx emission reduction by combustion modifications in the 350 MWe Kostolac B boiler furnace, tangentially fired by pulverized Serbian lignite, is investigated in the paper. Numerical experiments were done by an in-house developed 3-D differential comprehensive combustion code, with fuel- and thermal-NO formation/destruction reactions model. The code was developed to be easily used by engineering staff for process analysis in boiler units. A broad range of operating conditions was examined, such as fuel and preheated air distribution over the burners and tiers, operation mode of the burners, grinding fineness and quality of coal, boiler loads, cold air ingress, recirculation of flue gases, water-walls ash deposition and combined effect of different parameters. The predictions show that the NOx emission reduction of up to 30% can be achieved by a proper combustion organization in the case-study furnace, with the flame position control. Impact of combustion modifications on the boiler operation was evaluated by the boiler thermal calculations suggesting that the facility was to be controlled within narrow limits of operation parameters. Such a complex approach to pollutants control enables evaluating alternative solutions to achieve efficient and low emission operation of utility boiler units.", journal = "Thermal Science", title = "Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers", volume = "20", pages = "S183-S196", doi = "10.2298/TSCI150604223B" }
Belošević, S., Tomanović, I. D., Crnomarković, N. Đ., Milićević, A.,& Tucaković, D. R.. (2016). Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers. in Thermal Science, 20, S183-S196. https://doi.org/10.2298/TSCI150604223B
Belošević S, Tomanović ID, Crnomarković NĐ, Milićević A, Tucaković DR. Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers. in Thermal Science. 2016;20:S183-S196. doi:10.2298/TSCI150604223B .
Belošević, Srđan, Tomanović, Ivan D., Crnomarković, Nenad Đ., Milićević, Aleksandar, Tucaković, Dragan R., "Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers" in Thermal Science, 20 (2016):S183-S196, https://doi.org/10.2298/TSCI150604223B . .