TY  - JOUR
AU  - Stupar, Goran
AU  - Tucaković, Dragan R.
AU  - Živanović, Titoslav
AU  - Belošević, Srđan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/415
AB  - The European normatives prescribe content of 200 mg/Nm(3) NO for pulverized coal combusting power plants. In order to reduce content of NOx in Serbian thermal power plant (TPP) square Kostolac B square its necessary to implement particular measures until 2016. The mathematical model of lignite combustion in the steam boiler furnace is defined and applied to analyze the possibility of implementing certain primary measures for reducing nitrogen oxides and their effects on the steam boiler operation. This model includes processes in the coal-fired furnace and defines radiating reactive two-phase turbulent flow. The model of turbulent flow also contains sub-model of fuel and thermal NOx formation and destruction. This complex mathematical model is related to thermal and aerodynamic calculations of the steam boiler within a unified calculation system in order to analyze the steam boiler overall work. This system provides calculations with a number of influential parameters. The steam boiler calculations for unit 1 (350 MWe) of TPP square Kostolac B square are implemented for existing and modified combustion system in order to achieve effective, reliable and ecological facility work. The paper presents the influence analysis of large number of parameters on the steam boiler operation with an accepted concept of primary measures. Presented system of calculations is verified against measurements in TPP square Kostolac B square. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Applied Thermal Engineering
T1  - Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler
VL  - 78
SP  - 397
EP  - 409
DO  - 10.1016/j.applthermaleng.2014.12.074
ER  - 

@article{
author = "Stupar, Goran and Tucaković, Dragan R. and Živanović, Titoslav and Belošević, Srđan",
year = "2015",
abstract = "The European normatives prescribe content of 200 mg/Nm(3) NO for pulverized coal combusting power plants. In order to reduce content of NOx in Serbian thermal power plant (TPP) square Kostolac B square its necessary to implement particular measures until 2016. The mathematical model of lignite combustion in the steam boiler furnace is defined and applied to analyze the possibility of implementing certain primary measures for reducing nitrogen oxides and their effects on the steam boiler operation. This model includes processes in the coal-fired furnace and defines radiating reactive two-phase turbulent flow. The model of turbulent flow also contains sub-model of fuel and thermal NOx formation and destruction. This complex mathematical model is related to thermal and aerodynamic calculations of the steam boiler within a unified calculation system in order to analyze the steam boiler overall work. This system provides calculations with a number of influential parameters. The steam boiler calculations for unit 1 (350 MWe) of TPP square Kostolac B square are implemented for existing and modified combustion system in order to achieve effective, reliable and ecological facility work. The paper presents the influence analysis of large number of parameters on the steam boiler operation with an accepted concept of primary measures. Presented system of calculations is verified against measurements in TPP square Kostolac B square. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Applied Thermal Engineering",
title = "Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler",
volume = "78",
pages = "397-409",
doi = "10.1016/j.applthermaleng.2014.12.074"
}

Stupar, G., Tucaković, D. R., Živanović, T.,& Belošević, S.. (2015). Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler. in Applied Thermal Engineering, 78, 397-409.
https://doi.org/10.1016/j.applthermaleng.2014.12.074

Stupar G, Tucaković DR, Živanović T, Belošević S. Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler. in Applied Thermal Engineering. 2015;78:397-409.
doi:10.1016/j.applthermaleng.2014.12.074 .

Stupar, Goran, Tucaković, Dragan R., Živanović, Titoslav, Belošević, Srđan, "Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler" in Applied Thermal Engineering, 78 (2015):397-409,
https://doi.org/10.1016/j.applthermaleng.2014.12.074 . .

TY  - JOUR
AU  - Belošević, Srđan
AU  - Beljanski, Vladimir
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad Đ.
AU  - Tucaković, Dragan R.
AU  - Živanović, Titoslav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6938
AB  - Considerable research efforts focus on modeling NOx formation/destruction and predicting NOx emission so that it can be controlled. A motivation for this numerical study was to examine the efficiency of combustion modifications in the furnaces of Kostolac B 350 MWe boiler units, tangentially fired by pulverized lignite. Numerical analysis was done by an in-house developed NOx submodel, coupled with differential comprehensive combustion model, previously developed and validated. The NOx submodel focuses on homogeneous reactions of both the fuel and the thermal NO formation/destruction processes. The submodel was validated by comparison of predicted NOx emissions with available measurements at the boiler units. Selected predictions of the emission, the furnace exit gas temperature, NO concentration, gas temperature, and velocity field are given for the case-study furnace under different operating conditions. The individual or combined effects of coal and preheated air distribution over the individual burners and the burner tiers, the grinding fineness and quality of coal, and the cold air ingress were investigated. Reduced emissions of up to 20-30% can be achieved only by proper organization of the combustion process. Obtained results were verified by the boiler thermal calculations. An optimal range of the furnace exit gas temperatures was proposed, with respect to the safe operation of the steam superheater. Simulations by means of a computer code developed for the purpose, showed that the air staging using overfire air ports might provide the NOx emission reduction of up to 24% in the test-cases with relatively high emission and up to 7% of additional reduction in already optimized cases.
T2  - Energy and Fuels
T1  - Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler
VL  - 26
IS  - 1
SP  - 425
EP  - 442
DO  - 10.1021/ef201380z
ER  - 

@article{
author = "Belošević, Srđan and Beljanski, Vladimir and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Tucaković, Dragan R. and Živanović, Titoslav",
year = "2012",
abstract = "Considerable research efforts focus on modeling NOx formation/destruction and predicting NOx emission so that it can be controlled. A motivation for this numerical study was to examine the efficiency of combustion modifications in the furnaces of Kostolac B 350 MWe boiler units, tangentially fired by pulverized lignite. Numerical analysis was done by an in-house developed NOx submodel, coupled with differential comprehensive combustion model, previously developed and validated. The NOx submodel focuses on homogeneous reactions of both the fuel and the thermal NO formation/destruction processes. The submodel was validated by comparison of predicted NOx emissions with available measurements at the boiler units. Selected predictions of the emission, the furnace exit gas temperature, NO concentration, gas temperature, and velocity field are given for the case-study furnace under different operating conditions. The individual or combined effects of coal and preheated air distribution over the individual burners and the burner tiers, the grinding fineness and quality of coal, and the cold air ingress were investigated. Reduced emissions of up to 20-30% can be achieved only by proper organization of the combustion process. Obtained results were verified by the boiler thermal calculations. An optimal range of the furnace exit gas temperatures was proposed, with respect to the safe operation of the steam superheater. Simulations by means of a computer code developed for the purpose, showed that the air staging using overfire air ports might provide the NOx emission reduction of up to 24% in the test-cases with relatively high emission and up to 7% of additional reduction in already optimized cases.",
journal = "Energy and Fuels",
title = "Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler",
volume = "26",
number = "1",
pages = "425-442",
doi = "10.1021/ef201380z"
}

Belošević, S., Beljanski, V., Tomanović, I. D., Crnomarković, N. Đ., Tucaković, D. R.,& Živanović, T.. (2012). Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler. in Energy and Fuels, 26(1), 425-442.
https://doi.org/10.1021/ef201380z

Belošević S, Beljanski V, Tomanović ID, Crnomarković NĐ, Tucaković DR, Živanović T. Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler. in Energy and Fuels. 2012;26(1):425-442.
doi:10.1021/ef201380z .

Belošević, Srđan, Beljanski, Vladimir, Tomanović, Ivan D., Crnomarković, Nenad Đ., Tucaković, Dragan R., Živanović, Titoslav, "Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler" in Energy and Fuels, 26, no. 1 (2012):425-442,
https://doi.org/10.1021/ef201380z . .