Effects of n-butanol addition on sooting tendency and formation of C1 –C2 primary intermediates of n-heptane/air mixture in a micro flow reactor with a controlled temperature profile

Mohd Hafidzal Bin Mohd Hanafi, Hisashi Nakamura, Susumu Hasegawa, Takuya Tezuka, Kaoru Maruta

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Effects of n-butanol addition on the sooting tendency and formations of C1 and C2 primary intermediates of n-heptane/air mixtures were studied in a micro flow reactor with a controlled temperature profile. Sooting tendency was investigated over equivalence ratios of 1.5–4.0 at a maximum wall temperature of 1300 K. Experimental observations indicated two types of flames: a flame alone (type I) or a flame with soot (type II). The critical sooting equivalence ratio, at which the flame switched from type I to type II, increased with the increase of butanol content in the fuel blend. Results show that the sooting tendency of n-heptane decreases as the amount of n-butanol is increased. Computational results obtained using the Chemical Reaction Engineering and Chemical Kinetics mechanism show fair agreement with measurement results obtained at equivalence ratio of 2.0 and the maximum wall temperature of 1166 K. The validity in initial-stage reaction progress of existing mechanisms was examined.

Original languageEnglish
Pages (from-to)2066-2081
Number of pages16
JournalCombustion science and technology
Volume190
Issue number12
DOIs
Publication statusPublished - 2018 Dec 2

Keywords

  • Microcombustion
  • polycyclic aromatic hydrocarbons
  • soot precursors and oxygenated fuels

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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