Abstract. The combustion of solid low-grade fuel in LTV-boiler furnaces is a pressing research questions currently. The aim of this work is to study the influence of flue gas entering the process fully-the boiler furnace. The result of the calculation of the resulting distribution of temperatures and oxygen concentrations along the height of the furnace. The analysis of the obtained results.

Abstract. The combustion of solid low-grade fuel in LTV-boiler furnaces is a pressing research questions currently. The aim of this work is the creation of a computational grid model LTV-furnace to calculate the package of applied programs FIRE 3D. The study created a model LTVfurnace. The model tested on brown coal from the Nazarovo Deposit. The resulting distribution of temperatures and velocities has proved the performance of the model.