Residence time distribution in multiorifice baffled tubes: A numerical study

被引：28

作者：

Gonzalez-Juarez, D. ^{[1
]}

Solano, J. P. ^{[1
]}

Herrero-Martin, R. ^{[1
]}

Harvey, A. P. ^{[2
]}

机构：

[1] Univ Politecn Cartagena UPCT, Dept Ingn Term & Fluidos, Campus Muralla del Mar, Cartagena 30202, Spain

[2] Newcastle Univ, Sch Chem Engn & Adv Mat CEAM, Claremont Rd, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2017年 / 118卷

基金：

英国工程与自然科学研究理事会;

关键词：

Oscillatory baffled reactors; Plug flow; Transport of species; CFD; RTD; OSCILLATORY FLOW; SUSPENSION POLYMERIZATION; REACTOR; OPTIMIZATION;

D O I：

10.1016/j.cherd.2016.12.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The fluid flow and the transport of species in an intensified topology of oscillatory baffled reactors is analyzed here by means of CFD. The classic configuration with equidistant single orifice plate baffles has been replaced by multiple-orifice disks, of the same open crosssectional area. The flow through these disks generates an array of parallel jets downstream and upstream, exhibiting various swirl structures that increase the radial mixing. Time-dependent flow patterns are presented here for configurations of disks with 1, 3, 7, 19 and 43 orifices. The evaluation of their mixing performance has been accomplished by injecting a pulse of a tracer, for a constant oscillatory Reynolds number of Re. = 800. The concentration-time profile of the tracer throughout the reactor was analyzed and an axial dispersion coefficient was derived on the basis of a 1D plug flow with dispersion model. It was clear that the quality of plug flow increased with increasing number of holes. Pressure-drop was reported by means of Fanning friction factor and power density dissipation. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：259 / 269

页数：11

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