Volatile flame visualization of single pulverized fuel particles

Cited 5 time in webofscience Cited 0 time in scopus
  • Hit : 224
  • Download : 0
Experimental observation of solid particles and their volatile flames was performed to present the characteristic combustion behavior of solid fuels used in energy-production industries, i.e. coal, biomass, and petro-chemical polymers. In a hot gas stream at similar to 1240 K and a rapid heating rate of similar to 100 K/ms, time-resolved visualization of a sub-millimeter fuel particle at high magnification showed patterns of flame development of the particle, demonstrating the sub-processes of particle heat-up, devolatilization, and char combustion. The shadow images of moving particle and its surrounding volatile flame could be visualized at the same time. Repeatable experiments were able to present volatile flame patterns, which were unique in accordance with the fuel type in the corresponding combustion environment. Among the different formation patterns, a concentric and spherical volatile flame was chosen as a reference. The parameters, particle size (75-200 mu m) and O-2 concentration (21.1-40.2 vol %), which affected the patterns were considered for understanding influence on them. Visible appearance was quantified by using a length scale that measured the apparent flame diameter and a set of newly-defined time scales that described its chronological variation. Using quantitative identifiers and feature descriptions, the observed flame behaviors were discussed as unique signatures for characterizing the combustion process of burning fuel particle. (C) 2017 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2018-06
Language
English
Article Type
Article
Keywords

COAL PARTICLES; COMBUSTION CHARACTERISTICS; SOOT PARTICLES; HEATING RATES; BIOMASS; DEVOLATILIZATION; IGNITION; BEHAVIOR; MODELS; IMPACT

Citation

POWDER TECHNOLOGY, v.333, pp.353 - 363

ISSN
0032-5910
DOI
10.1016/j.powtec.2018.04.048
URI
http://hdl.handle.net/10203/243690
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 5 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0