Solvent Selection for Extractive Distillation

Optimization of extractive desulfurization of Malaysian diesel fuel using response surface methodology/Box–Behnken design

“…Some factors must to be considered in solvent selection, i.e. selectivity, density, recoverability, cost, viscosity, toxicity, inflammability, corrosiveness, freezing point and chemical reactivity [12,13]. Different kinds of solvents have been explored as reported in pioneering studies.…”

Assessing the Accuracy of Selectivity as a Basis for Solvent Screening in Extractive Distillation Processes

“…Traditionally, the screening of such solvents is done by ranking the solvents in the order of their selectivity at infinite dilution (2)(3)(4)(5). Selectivity at infinite dilution is therefore an important parameter for consideration in the screening of solvents for an extractive distillation process.…”

Solvent Selectivity for Hydrocarbons with Close Molar Volumes

“…For example, such an increase leads to selectivity, with benzene as solvent, of 1.65. Kyle and Leng (1965) in a study of hydrocarbon-polar solvent solutions reached the same conclusion observing that while increasing the value of X for isooctane by 0.5 gave better results, a similar increase of the value for n-heptane gave poorer results. They found that good results were obtained by increasing only the value of X for isooctane.…”

“…Attempts to explain the differences in terms of chemical effects were completely un- [ v p ; -v 3 c TI -7,121 x 10 2 successful. On the other hand, adjustment of the X value for isooctane, following the findings of Hildebrand (1950) and especially of Kyle and Leng (1965), gave much better results as seen from the values for P c a l c d . Again chemical effects could not explain the differences between SBcalcd and Sobsd while adjustment of the inductive contributions, Figure 1, resulted in excellent results as the values of Sbcalcd, Table X N , indicate.…”