Numerical study on the effect of coal composition on a pilot-scale turbulent coal combustion furnace

Seongyool Ahn, Hiroaki Watanabe, Toshiaki Kitagawa

Research output: Contribution to conferencePaper

Abstract

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.

Original languageEnglish
Publication statusPublished - 2019
Event12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, Japan
Duration: Jul 1 2019Jul 5 2019

Conference

Conference12th Asia-Pacific Conference on Combustion, ASPACC 2019
CountryJapan
CityFukuoka
Period7/1/197/5/19

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Numerical study on the effect of coal composition on a pilot-scale turbulent coal combustion furnace'. Together they form a unique fingerprint.

  • Cite this

    Ahn, S., Watanabe, H., & Kitagawa, T. (2019). Numerical study on the effect of coal composition on a pilot-scale turbulent coal combustion furnace. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.