回転炉内の粒子軸方向混合と滞留時間分布

概要

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Residence time distributions of particles in a horizontally rotating cylinder were theoretically and experimentally studied. A mathematical model of the axial dispersion of particles was analytically solved and the following expression for their residence time distribution was obtained : [numerical formula] Dimensionless Peclet number as a function of variances in residence time distribution was given as follows : 1/Pe=(-1+√<1+σ^2>)/2 Measurements were based on an impulse response method of tracers into spherical alumina particles stream through a rotary cylinder which is made of vinyl chloride resin. An empirical correlation among Peclet number, operational conditions, and geometrical factors was determined : 1/Pe=9.46×10^<-5>(F/D_<t^3ρ>N)^<-0.516>(L/D_t)^<-0.524>(d_p/D_t)^<0.604>f^<-5.550> Upon examinations of effects of the revolution rate on the axial dispersion coefficient, it was shown that the latter was directly proportional to the former.
社団法人日本鉄鋼協会の論文
1974-08-01