Abstract
Entrained-bed gasifier is used in the IGCC system, which is believed to be an efficient power plant. It is essential to understand gasification behavior of coal. In this study, the structure and gasification reactivity of solid carbons prepared under entrained-bed gasifier conditions were examined. It was found that solid carbons consist of char and coke, which are devolatilized char and carbon deposit from volatile matters, respectively, and their gasification reactivity are different. Gasification reactivity of solid carbons prepared under oxygen-containing atmosphere was higher than that of solid carbons prepared under inert atmosphere.
