Work has been recently carried out on fast pyrolysis of Euphorbia in a 6 g/h externally heated fluid bed microreactor. A maximum total liquid yield of 44 wt% was obtained at 500*C (29).

3.5.2.8 _ University of Twente (Netherlands)

An ablative pyrolysis reactor was developed based on particles sliding over a heated rotating cone mixed with heated sand. Total liquid yields of up to 50 wt% were obtained at capacity of 7 kg/h (30). Work is continuing on development of the system to recycle the sand and char in associated fluid beds and a standpipe to provide a continuous system (31). A 50 kg/h unit has been sold to the University of Beijing in China and is due for commissioning early in 1995 (31).

3.5.2.9 Other

TGA studies are being carried out at the University of Zaragoza, Spain (32) and the Hungarian Academy of Sciences (18); free fall or drop tube experiments at RIT, Sweden (33); modelling studies at the University of Naples, Itafy (34); bio-oil analysis studies at the University of Corsica, France (35) and UCL, Belgium (36); wire mesh pyrolysis at Imperial College, London, UK (37); waste wood fast pyrolysis at the Institute of Wood Chemistry, Hamburg, Germany; and waste pyrolysis at low temperature at the University of Cardiff, UK (38).