Open AccessMechanisms and optimization of coal combustion. Semiannual report, May 1, 1998--October 31, 1998
Author(s) -
Kyriacos Zygourakis
Publication year - 1999
Language(s) - English
Resource type - Reports
DOI - 10.2172/754423
Subject(s) - combustion , coal , reactivity (psychology) , pyrolysis , diffusion , chemistry , coal combustion products , chemical engineering , environmental science , thermodynamics , organic chemistry , engineering , medicine , physics , alternative medicine , pathology
The effects of process conditions on the reactivity of Illinois No. 6 coal were studied using a new sequential combustion procedure. This procedure was developed to accurately simulate the reacting zones of industrial coal combustors. Reactivity patterns in the diffusion controlled regime were significantly affected by the pyrolysis heating rates, as well as by the oxygen concentration and combustion temperature. These results clearly show the importance of the macropore structure of chars in determining their combustion kinetics under conditions where diffusional limitations are important