Multicomponent vapor‐liquid equilibria at high pressures: Part I. Experimental study of the nitrogen—oxygen—carbon dioxide system at 0°C

A description is given of a dynamic vapor‐liquid equilibrium apparatus in which both phases are recirculated by vane pumps especially designed for high‐pressure service. Equilibrium phase compositions as well as vapor and liquid molar volumes up to the critical pressure are reported for the two binary systems nitrogen‐carbon dioxide and oxygen‐carbon dioxide and for the ternary.