Phase-boundary calculations in systems involving more than two phases, with application to hydrocarbon mixtures

An algorithm to track phase boundaries in systems with more than two phases is presented. The method follows the basic principles for phase diagram co nstruction developed by Michelsen. The method is applied successfully to so me normal alkane systems with solid-liquid-vapor (SLV) phase behavior. Some thermodynamic aspects of correlating the phase-boundary data for these sys tems are discussed, particularly the influence of equation of state paramet ers on the solid-liquid and SLV boundary calculation.