Growth of soot particles in counterflow diffusion flames of ethylene

J. Y. Hwang; S. H. Chung

doi:10.1016/S0010-2180(00)00234-0

Growth of soot particles in counterflow diffusion flames of ethylene

J. Y. Hwang, S. H. Chung^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

107 Scopus citations

Abstract

The structures of sooting and polycyclic aromatic hydrocarbon (PAH) zones in counterflow diffusion flames have been investigated experimentally. The rate of soot mass growth is modeled, considering C₂H₂ addition to the surface of soot particles and coagulation of PAHs with soot particles. The results show that hydrocarbon radicals can play an important role in the activation of a soot particle's surface for C₂H₂ to add to it when free H atoms are nearly absent from the soot growth region. Coagulation of PAHs with soot is also important for soot growth in the low temperature region of diffusion flames, which have relatively high concentrations of PAHs. The combined mechanism of C₂H₂ addition to soot and PAH-soot coagulation is capable of successfully predicting the growth rate of soot particles determined experimentally.

Original language	English (US)
Pages (from-to)	752-762
Number of pages	11
Journal	Combustion and Flame
Volume	125
Issue number	1-2
DOIs	https://doi.org/10.1016/S0010-2180(00)00234-0
State	Published - 2001
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
General Physics and Astronomy

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10.1016/S0010-2180(00)00234-0

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title = "Growth of soot particles in counterflow diffusion flames of ethylene",

abstract = "The structures of sooting and polycyclic aromatic hydrocarbon (PAH) zones in counterflow diffusion flames have been investigated experimentally. The rate of soot mass growth is modeled, considering C2H2 addition to the surface of soot particles and coagulation of PAHs with soot particles. The results show that hydrocarbon radicals can play an important role in the activation of a soot particle's surface for C2H2 to add to it when free H atoms are nearly absent from the soot growth region. Coagulation of PAHs with soot is also important for soot growth in the low temperature region of diffusion flames, which have relatively high concentrations of PAHs. The combined mechanism of C2H2 addition to soot and PAH-soot coagulation is capable of successfully predicting the growth rate of soot particles determined experimentally.",

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T1 - Growth of soot particles in counterflow diffusion flames of ethylene

AU - Hwang, J. Y.

AU - Chung, S. H.

PY - 2001

Y1 - 2001

N2 - The structures of sooting and polycyclic aromatic hydrocarbon (PAH) zones in counterflow diffusion flames have been investigated experimentally. The rate of soot mass growth is modeled, considering C2H2 addition to the surface of soot particles and coagulation of PAHs with soot particles. The results show that hydrocarbon radicals can play an important role in the activation of a soot particle's surface for C2H2 to add to it when free H atoms are nearly absent from the soot growth region. Coagulation of PAHs with soot is also important for soot growth in the low temperature region of diffusion flames, which have relatively high concentrations of PAHs. The combined mechanism of C2H2 addition to soot and PAH-soot coagulation is capable of successfully predicting the growth rate of soot particles determined experimentally.

AB - The structures of sooting and polycyclic aromatic hydrocarbon (PAH) zones in counterflow diffusion flames have been investigated experimentally. The rate of soot mass growth is modeled, considering C2H2 addition to the surface of soot particles and coagulation of PAHs with soot particles. The results show that hydrocarbon radicals can play an important role in the activation of a soot particle's surface for C2H2 to add to it when free H atoms are nearly absent from the soot growth region. Coagulation of PAHs with soot is also important for soot growth in the low temperature region of diffusion flames, which have relatively high concentrations of PAHs. The combined mechanism of C2H2 addition to soot and PAH-soot coagulation is capable of successfully predicting the growth rate of soot particles determined experimentally.

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U2 - 10.1016/S0010-2180(00)00234-0

DO - 10.1016/S0010-2180(00)00234-0

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SN - 0010-2180

VL - 125

SP - 752

EP - 762

JO - Combustion and Flame

JF - Combustion and Flame

IS - 1-2

ER -

Growth of soot particles in counterflow diffusion flames of ethylene

Abstract

ASJC Scopus subject areas

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