1-4-4 Char gasification behavior and surface morphology change during gasification in O_2/CO_2 environments

Abstract

Char gasification mechanisms in O_2/CO_2, O_2/Ar, and Ar/CO_2 environments were studied. O_2/CO_2 gasification contributed to higher char consumption than O_2/Ar or Ar/CO_2 gasification at the high temperature at which an effect of CO_2 gasification signicantly appeared, although it was less than the summation of the gasification rates of O_2/Ar and Ar/CO_2. With progressing gasification, the gasification rate under O_2/CO_2 is increased due to the change of char surface morphology.