Self-Synergistic Effect of Ethylene-Heptane Mixture on Soot Formation

DOI

10.2991/icreet-16.2017.37How to use a DOI?

Keywords

ethylene; heptane; soot volume fraction; opposed-flow flame; self-synergistic effect.

Abstract

The combustion and soot formation process of ethylene-heptane mixture was numerical calculated in an opposed-flow flame by an improved kinetic mechanism. The mechanism contains 211 species and 1410 reactions, including the pyrolysis reactions of heptane, core reactions of C0-C4, the formation of benzene, PAH growth up to coronene (A7). This mechanism was well validated by the mole fraction of major species in a heptane premixed flame and aromatic species in an ethylene/air opposed-flow flame. Numerical simulation in ethylene-heptane opposed-flow diffusion flame shows a self-synergistic effect on soot formation. As the ratio of heptane increases, the soot volume fraction (SVF), soot number density (SND), peak mole fraction of benzene and key PAH species all increase first and then decrease. A maximum peak of SVF and SND is reached when 5% heptane is added to the fuel. Propyl and methyl play important roles in the synergistic effect of the formation of benzene.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Liang Qiu
AU  - Xiao-Bei Cheng
AU  - Zhong-Qiu Li
PY  - 2017/03
DA  - 2017/03
TI  - Self-Synergistic Effect of Ethylene-Heptane Mixture on Soot Formation
BT  - Proceedings of the 2016 4th International Conference on Renewable Energy and Environmental Technology (ICREET 2016)
PB  - Atlantis Press
SP  - 216
EP  - 221
SN  - 2352-5401
UR  - https://doi.org/10.2991/icreet-16.2017.37
DO  - 10.2991/icreet-16.2017.37
ID  - Qiu2017/03
ER  -