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Liquid Dispersion in Large Diameter Bubble Columns, with and without Internals

✍ Scribed by Ann Forret; Jean-Marc Schweitzer; Thierry Gauthier; Rajamani Krishna; Daniel Schweich

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
625 KB
Volume
81
Category
Article
ISSN
0008-4034

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✦ Synopsis

Abstract

Liquid mixing has been studied in a 1 m diameter bubble column, with and without internals (vertical cooling tubes). The presence of internals significantly affects both large scale recirculation and local dispersion. The most common approach to model liquid mixing is the one‐dimensional axial dispersion model, validated many times in small bubble columns without internals. This paper shows that this model is still appropriate to large columns, but without internals. A two‐dimensional model, taking into account a radially dependent axial velocity profile, and both axial and radial dispersion, is required to account for the internals on liquid mixing.

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