The selection of test mixtures for distillation columns

✍ Scribed by D.G. Peacock

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 353 KB
• Volume: 22
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(67)80160-x

✦ Synopsis

The selection of mixtures for testing fractionating columns involves a number of factors, often mutually conflicting. The choice may be quite difficult. The tests involve the analysis of samples and analytical errors may seriously affect the results obtained. The importance of this factor depends not only on the accuracy of the analytical methods available but also on the range of compositions handled. The latter is itself dependent on the choice of mixture. This aspect of the selection is discussed. For a given separating power there is an optimum relative volatility of the chosen test mixture, at which analytical errors are least important. A chart is presented showing this optimum and the effect of departures from it, to provide a quantitative basis for this aspect of the choice.