Щудло Т. Biomass and Ukrainian deposits coal сo-firing features in pulverized coal boilers

The dissertation is devoted to determination of optimal conditions of coal with solid biomass co-firing in domestic boilers. Experimental studies of anthracite with pine wood co-firing, as well as bituminous coal with pine pellets, wheat straw and sunflower husks were carried out in the flow reactor and their optimal ratios were determined, which provide the highest degree of fuel mixture combustion. The method of calculation and on the basis of thermogravimetric studies of thermal decomposition, calculated kinetic constants for the stages of dehydration, volatile and charcoal combustion residue for mixtures of anthracite samples with pellets of pine and wheat straw, as well as for samples of solid biomass of Ukraine. The results of experiments to determine the optimal in terms of burning rate and grinding costs of biomass pine wood pellets particle size, wheat straw and sunflower husks in a laboratory fluidized bed stand are presented. The scheme of introduction of co-firing technology on TPP-210A boilers is developed. The results of thermal calculation of the boiler TPP-210A to replace 10% of its capacity with pine pellets are presented.