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Fast hydrothermal liquefaction of native and torrefied wood

Abstract

The work presented in this paper aimed to examine the effect of heating rate on the bio-crude yield of wood hydrothermal liquefaction. Three different heating methods were developed, resulting in heating rates ranging from 66 °C/min to 179 °C/min. The experiments were conducted using Norway spruce wood as feedstock at an operation temperature of 350 °C and with a total reaction time of 15 minutes. The bio-crude product was collected and separated using dichloromethane (DCM) as solvent and a centrifugal separator. The results confirm that heating rate has a clear positive effect on the bio-crude oil yield, increasing from 18.9 wt% for the lower heating rate of 66 °C/min to 35.8 wt% for the higher heating rate of 179 °C/min. It is also shown that the effect of feedstock pre-treatment via torrefaction on the bio-crude yield is negative.
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Category

Academic article

Language

English

Author(s)

Affiliation

  • SINTEF Energy Research / Termisk energi
  • Mid Sweden University
  • Norwegian University of Science and Technology

Year

2017

Published in

Energy Procedia

Volume

105

Page(s)

218 - 223

View this publication at Norwegian Research Information Repository