화학공학소재연구정보센터
Powder Technology, Vol.339, 995-1004, 2018
Hydrodynamic characteristics of sawdust in a pulsed slot-rectangular spouted bed
The effects of the pulsation frequency and slot dimensions on the hydrodynamic characteristics and the particle motion of sawdust of mean diameter 1.29 mm were investigated in a pulsed slot-rectangular spouted bed. Pulsation frequencies ranged from 1 to 5 Hz. The pulsed gas flow helped to mobilize the sawdust particles, regardless of the slot dimensions and initial bed height. The fountain height depended more on the slot dimensions than on the pulsation frequency. The time-average bed pressure drop increased with increasing pulsation frequency, while the maximum bed pressure drop was higher for low pulsation frequencies than for high frequency. A slot fully spanning the column thickness and a 3 Hz pulsation frequency were optimal conditions for spouting of sawdust particles without inert particles. (C) 2018 Elsevier B.V. All rights reserved.