Factors affecting stable operation of countercurrent multistage fluidized bed of solid-liquid system - Dimensions of downspout

被引：0

作者：

Tokuyama, H ^{[1
]}

Natsume, M ^{[1
]}

Nii, S ^{[1
]}

Kawaizumi, F ^{[1
]}

Takahashi, K ^{[1
]}

机构：

[1] Nagoya Univ, Dept Chem Engn, Nagoya, Aichi 4648603, Japan

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2004年 / 82卷 / 02期

关键词：

fluidized bed; multistage fluidized bed; ion exchange resin; solid-liquid; downspout; pressure drop; terminal settling velocity;

D O I：

暂无

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

For the effective use of an ion exchange resin, a counter-current multistage fluidized bed has been developed. An appropriate design of the downspout, which works to let particles flow down to next stage, is essential to obtain a stable resin flow. From an experimental study on the particle holdup and pressure drop in the multistage fluidized bed, a method to determine the downspout size has been developed. The relation between the liquid velocity within the downspout and the superficial liquid velocity has been derived from considering the pressure balance between the part of the fluidized bed and that of the downspout.

引用

页码：243 / 248

页数：6

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