THERMAL CONDUCTIVITY EXPERIMENTS

1
KINETICS OF BIOMASS PYROLYSIS Ville Hankalin,
Tuukka Ahonen and Risto Raiko Tampere
University of Technology Department of Energy
and Process Engineering
AIM OF THE RESEARCH The project studies
pyrolysis reaction kinetics in pyrolysis oil (bio
oil) production conditions and factors affecting
the kinetics. The project focuses especially on
effect of internal heat transfer rate of
wood-fuel particles on pyrolysis-product yields.
The work is linked to project Integrated
utilization chains of second-generation
pyrolysis of VTT. The main interest in year
2008 is wood and char heat conduction and thermal
capacity studies. A drop-tube reactor will be
built and experiments conducted during 2009. A
mathematical model for biomass pyrolysis
behaviour will be completed in 2010 based on the
experiments.

• THERMAL CONDUCTIVITY EXPERIMENTS
• A Fitch-type device was built and used to study
  thermal
• conductivities of fresh wood and char.
• Figure 1. An example of thermal conductivity
  experiments conducted for
• dried-fresh wood and pyrolysed wood during the
  summer

• LAMINAR-FLOW DROP-TUBE REACTOR FOR PRELIMINARY
  PYROLYSIS TESTS

Acknowledgements Finnish Funding Agency for
Technology and Innovation (Tekes) / BioRefine
Programme, Fortum Power and Heat Oy,
LassilaTikanoja Oyj, Metso Power Oyj,
UPM-Kymmene Oyj, The Graduate School for Energy
Science and Technology (EST)