Experimental study of polycyclic aromatic hydrocarbons (PAHs) in n-Heptane laminar diffusion flames from1.0 to 3.0 bar

Lei Zhou; G. Xiong; M. Zhang; L. Chen; D. Shirun; L.P.H. de Goey

doi:10.1016/j.fuel.2017.07.074

Experimental study of polycyclic aromatic hydrocarbons (PAHs) in n-Heptane laminar diffusion flames from1.0 to 3.0 bar

Lei Zhou, G. Xiong, M. Zhang, L. Chen, D. Shirun, L.P.H. de Goey

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Abstract

As PAHs (Polycyclic Aromatic Hydrocarbons) are the main precursor of soot formation during the combustion, the investigation of PAHs formation is essential for the understanding of the soot formation and soot reduction in combustion. In this study, a specially designed burner and the corresponding fueling system was used to stabilize a laminar diffusion flame of n-heptane up to 3.0 bar before it becomes unstable. Using the combination of LII (Laser Induced Incandescence) and LIF (Laser Induced Fluorescence) techniques, the PAHs and soot formation and their distributions in the studied flames were obtained and explained. The results showed that PAHs were almost surrounded by soot and were present in the lower part of the flame. Moreover, the integral soot and PAH intensities exhibited a power law dependence on the pressure, being proportional to pn with n of 1.38 ± 0.32 and 1.49 ± 0.25 respectively under the pressure range of 1.0–3.0 bar.

Original language	English
Pages (from-to)	265-273
Number of pages	9
Journal	Fuel
Volume	209
DOIs	https://doi.org/10.1016/j.fuel.2017.07.074
Publication status	Published - 1 Dec 2017

Keywords

Elevated pressure
LIF
LII
Laminar diffusion flames
PAHs
Soot
n-heptane

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@article{90583ff3d4dc40a686a53fbfdccbebdd,

title = "Experimental study of polycyclic aromatic hydrocarbons (PAHs) in n-Heptane laminar diffusion flames from1.0 to 3.0 bar",

abstract = "As PAHs (Polycyclic Aromatic Hydrocarbons) are the main precursor of soot formation during the combustion, the investigation of PAHs formation is essential for the understanding of the soot formation and soot reduction in combustion. In this study, a specially designed burner and the corresponding fueling system was used to stabilize a laminar diffusion flame of n-heptane up to 3.0 bar before it becomes unstable. Using the combination of LII (Laser Induced Incandescence) and LIF (Laser Induced Fluorescence) techniques, the PAHs and soot formation and their distributions in the studied flames were obtained and explained. The results showed that PAHs were almost surrounded by soot and were present in the lower part of the flame. Moreover, the integral soot and PAH intensities exhibited a power law dependence on the pressure, being proportional to pn with n of 1.38 ± 0.32 and 1.49 ± 0.25 respectively under the pressure range of 1.0–3.0 bar.",

keywords = "Elevated pressure, LIF, LII, Laminar diffusion flames, PAHs, Soot, n-heptane",

author = "Lei Zhou and G. Xiong and M. Zhang and L. Chen and D. Shirun and {de Goey}, L.P.H.",

year = "2017",

month = dec,

day = "1",

doi = "10.1016/j.fuel.2017.07.074",

language = "English",

volume = "209",

pages = "265--273",

journal = "Fuel",

issn = "0016-2361",

publisher = "Elsevier",

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TY - JOUR

T1 - Experimental study of polycyclic aromatic hydrocarbons (PAHs) in n-Heptane laminar diffusion flames from1.0 to 3.0 bar

AU - Zhou, Lei

AU - Xiong, G.

AU - Zhang, M.

AU - Chen, L.

AU - Shirun, D.

AU - de Goey, L.P.H.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - As PAHs (Polycyclic Aromatic Hydrocarbons) are the main precursor of soot formation during the combustion, the investigation of PAHs formation is essential for the understanding of the soot formation and soot reduction in combustion. In this study, a specially designed burner and the corresponding fueling system was used to stabilize a laminar diffusion flame of n-heptane up to 3.0 bar before it becomes unstable. Using the combination of LII (Laser Induced Incandescence) and LIF (Laser Induced Fluorescence) techniques, the PAHs and soot formation and their distributions in the studied flames were obtained and explained. The results showed that PAHs were almost surrounded by soot and were present in the lower part of the flame. Moreover, the integral soot and PAH intensities exhibited a power law dependence on the pressure, being proportional to pn with n of 1.38 ± 0.32 and 1.49 ± 0.25 respectively under the pressure range of 1.0–3.0 bar.

AB - As PAHs (Polycyclic Aromatic Hydrocarbons) are the main precursor of soot formation during the combustion, the investigation of PAHs formation is essential for the understanding of the soot formation and soot reduction in combustion. In this study, a specially designed burner and the corresponding fueling system was used to stabilize a laminar diffusion flame of n-heptane up to 3.0 bar before it becomes unstable. Using the combination of LII (Laser Induced Incandescence) and LIF (Laser Induced Fluorescence) techniques, the PAHs and soot formation and their distributions in the studied flames were obtained and explained. The results showed that PAHs were almost surrounded by soot and were present in the lower part of the flame. Moreover, the integral soot and PAH intensities exhibited a power law dependence on the pressure, being proportional to pn with n of 1.38 ± 0.32 and 1.49 ± 0.25 respectively under the pressure range of 1.0–3.0 bar.

KW - Elevated pressure

KW - LIF

KW - LII

KW - Laminar diffusion flames

KW - PAHs

KW - Soot

KW - n-heptane

UR - http://www.scopus.com/inward/record.url?scp=85026649172&partnerID=8YFLogxK

U2 - 10.1016/j.fuel.2017.07.074

DO - 10.1016/j.fuel.2017.07.074

M3 - Article

SN - 0016-2361

VL - 209

SP - 265

EP - 273

JO - Fuel

JF - Fuel

ER -

Experimental study of polycyclic aromatic hydrocarbons (PAHs) in n-Heptane laminar diffusion flames from1.0 to 3.0 bar

Abstract

Keywords

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