Fractionation of edible oil model mixtures by supercritical carbon dioxide in a packed column. 2. A mass-transfer study

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Abstract

A mixture that partially resembles the distillates obtained from the deodorization process of olive oils was used as a case study to test and develop mass-transfer models valid for supercritical fluid processes. Such models are useful engineering tools that provide a theoretical background for the scale-up of industrial plants. In the first part of this series of papers, the fractionation performance of the model mixture squalene/methyl oleate by supercritical carbon dioxide in a countercurrent packed column containing a corrugated gauze-type structured packing was presented. This second part presents a general correlation for predicting the mass-transfer efficiency of the high-pressure packed column. Several correlations taken from the literature were used and their results compared with the experimentally determined mass-transfer coefficients and holdup. A model formerly developed for distillation columns was found to be valid for our high-pressure system. It was found that the area of the gauze packing effectively used for the mass transfer is important for the improvement of the accuracy of the model.

Original languageEnglish
Pages (from-to)2305-2315
Number of pages11
JournalIndustrial and Engineering Chemistry Research
Volume41
Issue number9
DOIs
Publication statusPublished - 1 May 2002

Keywords

  • Oils and fats
  • Supercritical fluids
  • Carbon dioxide
  • Distillation
  • High pressure effects
  • Mass transfer
  • Mixtures

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