Effect of Alcohol Addition to Gasoline on Soot Distribution Characteristics in Laminar Diffusion Flames

Fushui Liu, Yang Hua, Han Wu, Chia Fon Lee, Xu He

Research output: Contribution to journalArticlepeer-review

Abstract

Alcohols are widely used as alternative fuel for spark ignition engines to reduce soot emission. 2D soot distributions of alcohols-gasoline blends were studied in laminar diffusion flames by two-color laser-induced incandescence technique. The soot volume fraction decreases significantly with the alcohol blending ratio. At the same blending ratio, the soot-reducing ability declined with the carbon length of the alcohol, but the reducing effect for short-chain alcohols, i.e., methanol and ethanol, deteriorated at high blending ratio while it remained constant for the long-chain alcohol n-butanol. At fixed oxygen content, the soot-reducing ability of a short-chain alcohol is still higher than that of a long-chain alcohol, i.e., not only the oxygen content but also the molecular structure dominates the soot-reducing ability.

Original languageEnglish (US)
Pages (from-to)897-906
Number of pages10
JournalChemical Engineering and Technology
Volume41
Issue number5
DOIs
StatePublished - May 2018

Keywords

  • Alcohol addition
  • Gasoline
  • Laminar diffusion flames
  • Soot distribution characteristics
  • Two-color laser-induced incandescence

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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