Abstract
Continuous carbonization of crushed waste wood by partial combustion in a stirred fluidized bed of 15cm in diameter was investigated. The size of the crushed wood used in this study between 1.4 and 2.9mm. The experimental ranges were as follows: The carbonization temperature was from 400 to 600°C, the feed rate of wood particle from 18 to 48g/min, the L. P. G. rate from 24 to 38N-cm3/sec, and the coefficient of excess air from 1.2 to 1.8.
The product charcoal was in the mean size of about 1mm. Its yield was 6 to 15 wt%, and the ratio of the fixed carbon in the product to that in the raw material was from 0.4 to 0.5 in weight. It was found that the fraction of fixed carbon in the product charcoal in these experiments was about 2 to 15% higher than the literature data by other carbonization methods.
