Simultaneous imaging of Mie scattering, PAHs laser induced fluorescence and soot laser induced incandescence to a lab-scale turbulent jet pulverized coal flame

Jun Hayashi, Nozomu Hashimoto, Noriaki Nakatsuka, Kazuki Tainaka, Hirofumi Tsuji, Kenji Tanno, Hiroaki Watanabe, Hisao Makino, Fumiteru Akamatsu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In this study, transient soot formation processes in a small-scale jet burner (CRIEPI burner) were investigated by simultaneous measurements of coal particles, polycyclic aromatic hydrocarbons (PAHs) and soot. Pairs of simultaneous measurements of "Mie scattering measurement for coal particles with laser induced fluorescence (LIF) for PAHs" and "LIF for PAHs with laser induced incandescence (LII) for soot" were performed to understand the transitive formation processes of soot formation in pulverized coal flame, whose signals were successfully separated. Findings in the present study are as follows. Coal particles, PAHs and soot were distributed in this order in radial direction from the central axis. Existing regions of coal particles, PAHs and soot were overlapped from the time averaged viewpoint while there were few overlapping areas of coal particles, PAHs and soot from the instantaneous viewpoint. This result indicates that a long time is required for the formation of soot from 2 to 3 rings PAHs through larger PAHs.

Original languageEnglish
Pages (from-to)3045-3052
Number of pages8
JournalProceedings of the Combustion Institute
Volume37
Issue number3
DOIs
Publication statusPublished - Jan 1 2019

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

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