Flow distribution in different microreactor scale-out geometries and the effect of manufacturing tolerances and channel blockage

被引：163

作者：

Amador, C ^{[1
]}

Gavriilidis, A ^{[1
]}

Angeli, P ^{[1
]}

机构：

[1] UCL, Dept Chem Engn, London WC1E 7JE, England

来源：

CHEMICAL ENGINEERING JOURNAL | 2004年 / 101卷 / 1-3期

关键词：

flow distribution; scale-out; microreactor; tolerance; blockage;

D O I：

10.1016/j.cej.2003.11.031

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

High throughput microreaction systems require a large number of microchannels operating in parallel (scale-out/number-up). Manifold structures should ensure the same residence time in all microchannels for operations involving heat/mass transfer and reactions. In this paper, flow distribution has been studied for two different manifold structures, namely consecutive and bifurcation, using a method based on electrical resistance networks. The method is validated against finite element simulations. The analytical model developed can be applied to both circular and rectangular channels and is used to study the effects of manufacturing tolerances and of channel blockages on flow distribution. Guidelines are drawn on the suitability of the manifold structures studied under different operating conditions, fabrication constraints and design objectives, based on their ability to produce narrow residence time distributions in the microchannel reactors. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：379 / 390

页数：12