TY - JOUR
TI - Numerical research of heat and mass transfer during low-temperature ignition of a coal particle
AU - Glushkov Dmitrii O
AU - Strizhak Pavel A
AU - Vysokomornaya Olga V
JN - Thermal Science
PY - 2015
VL - 19
IS - 1
SP - 285
EP - 294
PT - Article
AB - Numerical researches have been carried out to study the influence of air flow  temperature and a fossil fuel particle rate on sufficient conditions of  ignition in a “coal particle - air” system. Developed mathematical model  takes into account interconnected processes of heat transfer in a coal  particle and gas area, thermal decomposition of organic material, diffusion  and gas-phase oxidation of volatiles, heating of a coke (carbon) and its  heterogeneous ignition. The effect of low-temperature (about 600 K) ignition  for a single coal particle is impossible even at variation of its rate  (radius) from 0.05 mm to 0.5 mm. Nevertheless this process is possible for  group of particles (two, three, et al.) situated at close-range from each  other. The physical aspects of the problem are discussed.