TY - GEN
T1 - Numerical study of flow, combustion and emissions characteristics in a 625 MWe tangentially fired boiler with composition of coal 70% LRC and 30% MRC
AU - Sa'Adiyah, Devy
AU - Bangga, Galih
AU - Widodo, Wawan
AU - Ikhwan, Nur
N1 - Publisher Copyright:
© 2017 Author(s).
PY - 2017/8/1
Y1 - 2017/8/1
N2 - Tangential fired boiler is one of the methods that can produce more complete combustion. This method applied in Suralaya Power Plant, Indonesia. However, the boiler where supposed to use low rank coal (LRC), but at a given time must be mixed with medium rank coal (MRC) from another unit because of lack of LRC coal. Accordingly to the situation, the study about choosing the right position of LRC and MRC in the burner elevation must be investigated. The composition of coal is 70%LRC / 30%MRC where MRC will be placed at the lower (A & C - Case I)) or higher (E & G - Case II) elevation as the cases in this study. The study is carried out using Computational Fluid Dynamics (CFD) method. The simulation with original case (100%LRC) has a good agreement with the measurement data. As the results, MRC is more recommended at the burner elevation A & C rather than burner elevation E & G because it has closer temperature (880?K) compared with 100%LRC and has smaller local heating area between upper side wall and front wall with the range of temperature 1900 - 2000?K. For emissions, case I has smaller NOx and higher CO2 with 104?ppm and 15,6%. Moreover, it has samller O2 residue with 5,8% due to more complete combustion.
AB - Tangential fired boiler is one of the methods that can produce more complete combustion. This method applied in Suralaya Power Plant, Indonesia. However, the boiler where supposed to use low rank coal (LRC), but at a given time must be mixed with medium rank coal (MRC) from another unit because of lack of LRC coal. Accordingly to the situation, the study about choosing the right position of LRC and MRC in the burner elevation must be investigated. The composition of coal is 70%LRC / 30%MRC where MRC will be placed at the lower (A & C - Case I)) or higher (E & G - Case II) elevation as the cases in this study. The study is carried out using Computational Fluid Dynamics (CFD) method. The simulation with original case (100%LRC) has a good agreement with the measurement data. As the results, MRC is more recommended at the burner elevation A & C rather than burner elevation E & G because it has closer temperature (880?K) compared with 100%LRC and has smaller local heating area between upper side wall and front wall with the range of temperature 1900 - 2000?K. For emissions, case I has smaller NOx and higher CO2 with 104?ppm and 15,6%. Moreover, it has samller O2 residue with 5,8% due to more complete combustion.
UR - http://www.scopus.com/inward/record.url?scp=85028021525&partnerID=8YFLogxK
U2 - 10.1063/1.4994410
DO - 10.1063/1.4994410
M3 - Conference contribution
AN - SCOPUS:85028021525
T3 - AIP Conference Proceedings
BT - International Conference on Mathematics - Pure, Applied and Computation
A2 - Adzkiya, Dieky
PB - American Institute of Physics Inc.
T2 - 2nd International Conference on Mathematics - Pure, Applied and Computation: Empowering Engineering using Mathematics, ICoMPAC 2016
Y2 - 23 November 2016
ER -