Laminar jet dispersion and jet atomization in pressurized carbon dioxide

被引：60

作者：

Badens, E ^{[1
]}

Boutin, O ^{[1
]}

Charbit, G ^{[1
]}

机构：

[1] Univ Paul Cezanne, CNRS, UMR 6181, Lab Proc Propres & Environm, F-13545 Aix En Provence, France

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2005年 / 36卷 / 01期

关键词：

dynamic interfacial tension; supercritical fluids; liquid jet dispersion; jet disintegration; jet atomization;

D O I：

10.1016/j.supflu.2005.03.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Laminar jet dispersion and more particularly jet atomization of water, methylene chloride and ethyl alcohol into pressurized carbon dioxide are investigated under experimental conditions of pressure, temperature and liquid flow rate commonly used for supercritical anti solvent (SAS) precipitation processes. The different modes of dispersion are characterized as a function of the jet velocity. Axisymmetrical, asymmetrical and atomized jets are observed at 308 K, under a pressure ranging from 6 to 9 MPa, and for a liquid jet velocity ranging from to 0.14 to 8.02 m s(-1). A new correlation is given between the jet Reynolds number and the Ohnesorge number, determining the transition to the atomization regime. Experimental values of dynamic interfacial tensions are used to elaborate the correlation. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：81 / 90

页数：10

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