Experimental Studies of Combustion of Biofuel in a Fluidized Bed
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2017, Vol 23, Issue
Abstract
Results of experimental studies of heat losses due to mechanical underburning of various types of wood fuel in the furnaces of the fluidized bed are presented. Influence of the bed temperature and the air excess factor on the magnitude of mechanical underburning is shown. A significant increase in the content of combustible components in the entrainment is observed at the temperature below 750 °C, the completeness of combustion of the fuel increases at the temperature of the boiling layer above 800 °C. The optimum values of the excess air factor (1.4 ... 1.6) are determined, which ensure minimum fuel drift from the boiler furnace volume, as well as the fluidization number for various operating modes of the furnace. The results of determining the burning rate of wood waste (wood chips, sawdust) and granulated wood fuel (pellets) at the absence of heat removal are given. It is noted that the burning out of granulated fuel is more prolonged than the burning rate of unprepared wood waste, while the loss of heat due to mechanical incompleteness of combustion for such fuel is lower, since the compressed fuel has a higher density and less sail than sawdust and chips
Authors and Affiliations
O. Redko, I. Redko, Yu. Pivnenko
Keywords
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