Microexplosions in the upgrading of biomass-derived pyrolysis oils and the effects of simple fuel processing

Andrew R. Teixeira, Richard J. Hermann, Jacob S. Kruger, Wieslaw J. Suszynski, Lanny D. Schmidt, David P. Schmidt, Paul J. Dauenhauer

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The development of biofuels produced from biomass-derived pyrolysis oils (bio-oil) requires a deeper understanding of the bio-oil vaporization required for catalytic hydrodeoxygenation, reforming and combustion processes. Through the use of high-speed photography, bio-oil droplets on a 500 °C alumina disk in nitrogen gas were observed to undergo violent microexplosions capable of rapidly dispersing the fuel. High speed photography of the entire droplet lifetime was used to determine explosion times, frequency and evaporation rates of the bio-oil samples that have been preprocessed by filtering or addition of methanol. Filtration of the oil prior to evaporation significantly reduced the fraction of droplets that explode from 50% to below 5%. Addition of methanol to bio-oil led to uniform vaporization while also increasing the fraction of droplets that exploded. Experiments support the necessity of dissolvable solids for the formation of a volatile core and heavy shell which ruptures and rapidly expands to produce a violent bio-oil microexplosion.

Original languageEnglish (US)
Pages (from-to)341-348
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Volume1
Issue number3
DOIs
StatePublished - Mar 4 2013

Fingerprint

pyrolysis
Oils
Biomass
Pyrolysis
oil
biomass
droplet
Processing
High speed photography
vaporization
photography
Vaporization
Methanol
methanol
Evaporation
evaporation
Catalytic reforming
Biofuels
Aluminum Oxide
effect

Keywords

  • Bio-oil
  • Biofuels
  • Combustion
  • Evaporation
  • Fuel additives
  • Pyrolysis

Cite this

Microexplosions in the upgrading of biomass-derived pyrolysis oils and the effects of simple fuel processing. / Teixeira, Andrew R.; Hermann, Richard J.; Kruger, Jacob S.; Suszynski, Wieslaw J.; Schmidt, Lanny D.; Schmidt, David P.; Dauenhauer, Paul J.

In: ACS Sustainable Chemistry and Engineering, Vol. 1, No. 3, 04.03.2013, p. 341-348.

Research output: Contribution to journalArticle

Teixeira, Andrew R. ; Hermann, Richard J. ; Kruger, Jacob S. ; Suszynski, Wieslaw J. ; Schmidt, Lanny D. ; Schmidt, David P. ; Dauenhauer, Paul J. / Microexplosions in the upgrading of biomass-derived pyrolysis oils and the effects of simple fuel processing. In: ACS Sustainable Chemistry and Engineering. 2013 ; Vol. 1, No. 3. pp. 341-348.
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