【摘要】 液固流化床中颗粒循环运动机理的初步研究胡新辉朱家骅夏素兰石炎福（四川联合大学化学工程系，成都６１００６５）关键词：液固流化床颗粒运动径向液速分布１引言随着流态化技术在生物化工与能源等领域的不断推广应用，对液固流化床需要更深入的研究。以前的研究认为在...更多还原

【Abstract】 Based on the separating phase model, it is proposed that the circulating movements of particles in liquid-solid fluidized beds are caused by the parabolic radial distribution of liquid velocity. This parabolic distribution leads the particles in the axial region to move upward and those near the wall to move downward. The turning point is found to ber=R[1-d2p·ε4.836·u0·μ·β(ρs-)g]12Experimental results of liquid residence time distribution show good evidence of the parabolic distribution of liquid velocioy. For the particle velocity radial distribution, good agreements between the model and the reported data were achieved.更多还原