The structure of a coal dust flame propagation has been investigated theoretically and solved numerically.
The effects of particle size, volatile contents, equivalence ratio on laminar burning velocity and the role of radiative heat transfer have been sought in the one dimensional, steady state coal dust flame.
The model included heterogeneous reaction of carbon, homogeneous combustion of volatile gas and pyrolysis of the volatile matter. The calculated results have shown that laminar burning velocities are of the order 1m/s and the radiative heat transfer from reaction zone to particles was found to play an important role.
