Solution technique for pure-component phase equilibria near the critical point



An iterative technique is presented for determining pure-component phase equilibrium that essentially does not depend on initiation. The technique uses both the real and the complex conjugate root information obtained from the analytical solution to cubic equations of state to extend substantially the domain of convergence. The technique is robust and effective close to the critical point. © 2005 American Institute of Chemical Engineers AIChE J, 2006