The effect of equivalence ratio on the soot onset chemistry in one-dimensional, atmospheric-pressure, premixed ethylbenzene flames

Soot loading, temperature and size of single coal particle envelope flames in conventional- and oxy-combustion conditions (O2/N2 and O2/CO2)

“…4 and 5, increasing the O 2 mole fraction in either N 2 or CO 2 environments increased the peak f v to maximum values at 30-40% O 2 and decreased them thereafter. This trend is attributed to competition between soot formation and oxidation mechanisms, as explored in previous relevant research in this laboratory [55][56][57], when both the flame temperature and the availability of O 2 in the flame zone increase [58]. Moreover, it should also be noted that in this case the flame duration decreases with increasing O 2 , i.e., the residence time of the soot and its precursors in the flame decreases.…”

An experimental study of the rich premixed ethylbenzene flame at low pressure

“…Published by Elsevier Inc. All rights reserved. doi:10.1016/j.proci.2008.05.025 fractions of 0.2-4% in gasoline blends and presents with small quantities in diesel oils and jet fuels [3]. It is involved in PAHs formation, not only due to its role as actual fuel, but also because it serves as a common intermediate in combustion of other aromatic fuels, such as benzene [4] and toluene (Y.Y.…”

“…There are a limited number of experimental researches on ethylbenzene oxidation and combustion [3,[6][7][8][9][10][11][12][13][14][15]. Among these valuable works, mole fraction profiles of combustion intermediates were measured using probe sampling method in non-premixed methane doped-ethylbenzene flames [11,12] and in premixed atmospheric-pressure ethylbenzene flames [3,14,15].…”

“…Among these valuable works, mole fraction profiles of combustion intermediates were measured using probe sampling method in non-premixed methane doped-ethylbenzene flames [11,12] and in premixed atmospheric-pressure ethylbenzene flames [3,14,15]. Besides, kinetic studies were carried out basing on the results of the premixed atmospheric-pressure ethylbenzene flames [3,14]. Due to the limitation of detection procedures in these works, identification of combustion intermediates in ethylbenzene flames remains ambiguous and incomplete, especially for radicals and isomeric species, preventing the further understanding of ethylbenzene involved flame chemistry.…”

Critical evaluation of the oxygen-enhanced combustion in gas burners for industrial applications and heating systems

“…Ergut et al 47 carried out a study regarding the evolution of products from incomplete combustion (PIC) emitted by ethylbenzene laminar flames, in order to identify the role of the equivalence ratio in the evolution of PAH and other PIC as soot precursors. In order to achieve their objectives, they have measured the temperatures and collected samples at various heights above the burner, and samples were analyzed for soot, PAH, oxygenated species, fixed gases and light hydrocarbons.…”