CRITICAL PROPERTIES OF DILUTE MULTICOMPONENT MIXTURES

Equations for the critical properties of dilute multicomponent mixtures have been derived using the Soave‐Redlich‐Kwong equation of state. The utility and limitations of the approach are described using data on 47 mixtures from the literature. New data on three dilute multicomponent mixtures have also been measured in this work and are compared with the predictions of our method. In general, it is possible to predict all three critical properties of dilute multicomponent systems with a satisfactory degree of accuracy. Predictions are as good as those obtained from conventional equation of state methods, which employ a rigorous solution of the Gibbs criteria for the critical point, but offer the advantage that no iterations are required in the calculations. Copyright © 1990 American Institute of Chemical Engineers