INFLUENCE OF THE ORIGIN OF CHARS, PRODUCED FROM LIGNITE BY DIFFERENT METHODS, ON FEATURES OF THEIR ACTIVATION PROCESS

Features of activation of chars, produced from Kansk-Achinsk lignite b y different pyrolysis technologies, were studied in installation with a fluidized bed reactor. The influence of lignite carbonization parame ters of the char reaction ability towards its activation by water stea m and oxygen and char sorption properties was established and discusse d. Some relations between the degree of lignite carbonization, the tim e of treatment and chars surface area, and their sorption ability were found. The empirical equation was obtained describing the dynamics at char gasification at 400-700 degrees C and oxygen concentration 1%-4% . (C) 1998 Elsevier Science Ltd. All rights reserved.