A General Approach to Phase Diagrams for Binary Systems

Abstract

This chapter illustrates the wide variety of binary fluid phase equilibrium diagrams that can be obtained using models of the equation of state (EOS) type. It also highlights the need for paying attention to the predicted binary key lines, such as critical and liquid–liquid–vapor (LLV) equilibrium lines, when fitting binary interaction parameters of an EOS model. Besides, efficient algorithms for the EOS-based automated computation of complete Univariant Lines Phase Equilibrium Diagrams and of complete restricted binary phase equilibrium diagrams, such as isoplethic, isothermal, or isobaric diagrams, are described.