Homogeneous gas-solid suspensions for efficient downflow reactors

被引：2

作者：

Zenklusen, F

Reh, L ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Inst Proc Engn IVUK, CH-8092 Zurich, Switzerland

[2] F Hoffmann La Roche & Co Ltd, Teranol AG Lalden, CH-3930 Visp, Switzerland

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 2000年 / 181卷

关键词：

gas/solid suspensions; two phase flow; solid jet dispersion; gas/solid mixing; downflow reactors;

D O I：

10.1080/00986440008912815

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In order to increase heat and mass transfer and to accelerate high temperature gas-solids reactions of fine powders, downflow tube-reactors have attracted growing attention. Short reaction times of fractions of a second require short term constant Feeding of gas and solids followed by the continuous and rapid formation of homogeneous suspensions with low fluctuations in time to meet required mole ratios. The objective of the present study is the preparation of short-term constant, homogeneous gas-solid suspensions under gravitational flow conditions in downflow reactors. The dynamics of dispersing a very compact dense solids jet to achieve a homogeneous gas-solid suspension was investigated in a semi-industrial test unit with a maximum solids throughput of 5 t/h and different tube geometries.

引用

页码：57 / 67

页数：11