COAL-GASIFICATION IN A STIRRED BED REACTOR

Two Canadian non-caking coal chars of millimetre particle size were ga sified in a stirred bed reactor at atmospheric pressure using steam-ni trogen mixtures. Experimental results showed that the reaction atmosph ere changed with carbon conversion and the unit operated as a typical integral reactor. Some properties of the partially reacted chars were measured. The effects of gas superficial velocity, char particle size, steam partial pressure and temperature on conversion were examined. T he role of transport resistance was assessed and empirical kinetic mod els were tested. Copyright (C) 1996 Elsevier Science Ltd.