Vapor Liquid Equilibrium Behaviour Of Liquefied Petroleum Gas In Storage

Abstract

The accurate prediction of phase equilibrium of fluid mixtures is extremely important in many industrial applications, such as reservoir modeling, process design, and gas processing and separation. One practicable example of phase equilibrium is the primary process in an oil refinery which involves the separation of the crude oil into the more valuable fractions i.e., gasoline, kerosene, diesel fuel, etc. by distillation. Equilibrium is a static condition in which no changes occur in the properties of a system with time. A state of equilibrium is a state of rest (Lewis and Randall, 1961). Phase-equilibrium thermodynamics seeks to establish the relations among the various properties, in particular, temperature, pressure and composition, that ultimately prevail when two or more phases reach a state of equilibrium wherein all tendencies for changes have ceased.