Transient behavior of the vertical distribution of solid holdup with a step change in liquid velocity in a long bubble column

被引：0

作者：

Hidaka, Nobuyuki ^{[1
]}

Masuda, Takahiro ^{[1
]}

Matsumoto, Toshitatsu ^{[1
]}

Morooka, Shigeharu ^{[1
]}

机构：

[1] Kagoshima Univ, Kagoshima, Japan

来源：

Industrial and Engineering Chemistry Research | 1993年 / 32卷 / 08期

关键词：

Bubble columns - Dispersions - Flow of fluids - Fluidization - Mathematical models - Sedimentation - Sieves - Velocity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Sieved glass beads 480 μm in diameter are suspended by upward concurrent gas and liquid flow in a vertical bubble column of 7-cm diameter and 4.85-m height. Transient changes in the holdups of gas and solid particles are caused by a step change in the liquid velocity, and the time-dependent behavior of the axial distributions of the phase holdups is measured by sectioning the column simultaneously with 20 horizontal plates. A one-dimensional sedimentation-dispersion model is applied to describe the transient response of the solid holdup. The model developed is in good agreement with the data over an entire column consisting of dense and dilute regions.

引用

页码：1588 / 1591