TY - CONF
T1 - Numerical study on the effect of coal composition on a pilot-scale turbulent coal combustion furnace
AU - Ahn, Seongyool
AU - Watanabe, Hiroaki
AU - Kitagawa, Toshiaki
N1 - Funding Information:
This work is partially supported by JSPS KAKENHI Grant Number, 25420173 and 16K06125, and MEXT (Ministry of Education, Culture, Sports, Science and Technology Japan) as ”Priority issue on Post-K computer” (Accelerated Development of Innovative Clean Energy Systems), Project ID: hp160220, hp170273 and hp180203. This study is partially supported by Academia-Industry Cooperation Program: Development and Validation of Combustion Simulation Platform for Advanced Industrial Design Process in Combustion Society of Japan, and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology, 2013R1A6A3A03027849 as well.
Publisher Copyright:
© Asia-Pacific Conference on Combustion, ASPACC 2019.All right reserved.
PY - 2019
Y1 - 2019
N2 - A numerical simulation was performed to investigate the effect of coal composition on pulverized coal combustion by means of LES. The simulation was carried out for a pilot-scale turbulent coal combustion furnace. Two coals were employed to make comparison which have different fuel ratio. The simulation was validated by comparison with experiment. Distributions of the gaseous temperature and velocity were similar for the both cases. The predicted peak and gaseous temperature were higher than that of experiment at upstream, but the predicted results met experiment after OFA injection. The recirculating flows were well captured such as inside of outside of the flame, in addition to middle stream. The recirculating flow was stronger in the case of Newlands coal than that of Tanltohalum coal. With respect to mole fractions of species, more oxygen remained in the case of Tanltohalum coal at upstream due to lower fuel ratio, but the all oxygen was completely consumed when OFA was injected. Some devolatilized gas was observed at upstream in the case of Tanltohalum coal as well. Mole fraction of CO2 was higher at upstream in the case of Tanltohalum coal.
AB - A numerical simulation was performed to investigate the effect of coal composition on pulverized coal combustion by means of LES. The simulation was carried out for a pilot-scale turbulent coal combustion furnace. Two coals were employed to make comparison which have different fuel ratio. The simulation was validated by comparison with experiment. Distributions of the gaseous temperature and velocity were similar for the both cases. The predicted peak and gaseous temperature were higher than that of experiment at upstream, but the predicted results met experiment after OFA injection. The recirculating flows were well captured such as inside of outside of the flame, in addition to middle stream. The recirculating flow was stronger in the case of Newlands coal than that of Tanltohalum coal. With respect to mole fractions of species, more oxygen remained in the case of Tanltohalum coal at upstream due to lower fuel ratio, but the all oxygen was completely consumed when OFA was injected. Some devolatilized gas was observed at upstream in the case of Tanltohalum coal as well. Mole fraction of CO2 was higher at upstream in the case of Tanltohalum coal.
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M3 - Paper
AN - SCOPUS:85083950218
T2 - 12th Asia-Pacific Conference on Combustion, ASPACC 2019
Y2 - 1 July 2019 through 5 July 2019
ER -