GASIFICATION REACTIVITY OF SOME WESTERN CANADIAN COALS

Chars derived under one set of pyrolysis conditions from seven Western Canadian coals ranging from lignite to bituminous, and with an averag e particle size of 1.3 mm, were gasified with steam in a stirred-bed r eactor at 870 and 930 degrees C. Carbon conversion was plotted versus time, and the kinetics were evaluated according to semi-empirical mode ls from the literature. The reactivity changes with rank were correlat ed with coal and char properties, and the data fitted to generalized e quations.