Effect of influencing factors on fluidization quality of fluidized bed

Sand was taken as the experimental material and fluidizing experiments were conducted with the spacious entered-pipe and bottom entered-pipe at room temperature. Effects of biomass particle size, opening hole rate and method of gas introduction on the quality of fluidization were studied. Sand(particle size of 0.2～0.45 mm) was mixed with biomass of different particle sizes(0.2～0.45 mm and 0.45～0.6 mm). Results showed that better fluidizing qualities were achieved at different kinds of conditions. The fluidization quality turned better with the decrease of opening hole rate when the opening hole rate ranged from 0.5% to 3%. The spacious entered-pipe achieved better fluidization quality than bottom entered-pipe.