Интегральные характеристики зажигания капли органоводоугольного топлива при разных подходах ее помещения в поток разогретого окислителя

Abstract

The ignition and burning of single droplets of coal water fuel containing petrochemicals (CWFP) wereinvestigated. Two experimental approaches were applied. At first, the droplet was fixed inside the flow by special holder (thermal couple, metallic wire or ceramic rod) and the second way is free injection of the droplet into the combustion chamber. The main CWFP components were filter-cake (the coal processing waste), the used turbine oil, the plasticizer. The initial droplet radius was 0.5-1 mm, the temperature and the oxidant flow velocity were 400-1000 K and 0.5-5 m/s. The ignition delay times were defined. The comparison of parameters of the flying droplets ignition with corresponding values for droplets that were fixed by holder was done.