Evaporation of pyrolysis oil: Product distribution and residue char analysis

Guus van Rossum*, Berta Matas Güell, Ragavendra P. Balegedde Ramachandran, Kulathuiyer Seshan, Leon Lefferts, Wim P.M. van Swaaij, Sascha R.A. Kersten

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

27 Citations (Scopus)
14 Downloads (Pure)

Abstract

The evaporation of pyrolysis oil was studied at varying heating rates (∼1–106°C/min) with surrounding temperatures up to 850°C. A total product distribution (gas, vapor, and char) was measured using two atomizers with different droplet sizes. It was shown that with very high heating rates (∼106°C/min) the amount of char was significantly lowered (∼8%, carbon basis) compared to the maximum amount, which was produced at low heating rates using a TGA (∼30%, carbon basis; heating rate 1°C/min). The char formation takes place in the 100–350°C liquid temperature range due to polymerization reactions of compounds in the pyrolysis oil. All pyrolysis oil fractions (whole oil, pyrolytic lignin, glucose and aqueous rich/lean phase) showed charring behavior. The pyrolysis oil chars age when subjected to elevated temperatures (≥700°C), show similar reactivity toward combustion and steam gasification compared with chars produced during fast pyrolysis of solid biomass. However, the structure is totally different where the pyrolysis oil char is very light and fluffy. To use the produced char in conversion processes (energy or syngas production), it will have to be anchored to a carrier
Original languageEnglish
Pages (from-to)2200-2210
Number of pages11
JournalAIChE journal
Volume56
Issue number8
DOIs
Publication statusPublished - 2010

Keywords

  • 2025 OA procedure
  • Char
  • Droplet
  • Evaporation
  • Pyrolysis oil
  • Gasification

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