Main characteristics of flame continuum within active combustion area of boiler unit

The analysis of heterogeneous flame characteristics shows that using the curve of complete residues for describing fractional combustion of coal dust is difficult. For this reason, an innovative mathematical model of combustion of multi-fractional disperse medium is proposed, which is based on the normal function of the distribution of fractions and the standard deviation function. A number of dependencies adapted to actual combustion processes is offered to adjust the function of the coal dust combustion according to spatial and time flame variables. The authors consider aeromechanical and thermal processes in the flame. They highlight the initial flame portion to the volatile ignition plane and the main flame portion connected with a fractional burn-off of carbon residuals. Adjustment of carbon residual burn-off to linear flame dimensions allows determining a longitudinal distribution of the adiabatic temperature of the flame continuum and an actual flame temperature value with due regard to the model of heat transfer within an active combustion area of the boiler unit.