Elastic Interaction Between the Bed and the Distributor in a Vibrated Fluidized Bed
振动流化床中浅床层时床层与分布板之间的弹性作用

Literature reported that the mechanism of the energy transfer from a vibration body to a bed in a vibrated fluidized bed (VFB) was collision between two bodies. The enhancement of particle motion in the bed resulted in improvement of fluidization behavior. In this paper, the force acted on the distributor by the bed is measured to analyze the interaction of the distributor and the bed in VFB. Continuous and elastic interaction between the distributor and the bed is revealed from the experimental analysis. An elastic interaction model is proposed: the energy of the periodical vibration is elastically transferred to the bed from the distributor and propagated in the elastic bed as wave. The wave propagation forms a shear force field and enhances the gas-solid contact in the bed. The calculated results from the elastic model of a uniform bed agree with the experimental results under the condition of resonance in a shallow bed.