Carbonization of Coal in Continuous Fluidized Bed

Abstract

Carbonization of non-caking coal (Taiheiyo in Hokkaido, mean particle size = 350 micron) was carried out in continuous laboratory scale fluidized bed. Yields and composition of produced char, tar and gas were investigated at various levels of both carbonization temperature (440°C880°C) and coal residence time.
The maximum yield of tar was attained at ca. 600°C and the corresponding residence time of coal to complete carbonization was more than ten minutes.