A powerful solution algorithm for single-stage flash problems

Maximum separation in binary and multicomponent flash operations

“…It is a common industrial practice (Mansouri, 1979) and a basic precursor to the teaching of staged distillation. Flash calculations are routine in most material and energy balance simulator packages and other computer methods (Kinoshita and Takamatsu, 1986). Flash calculations can arise in various processes (Morozova et al, 1974;Elliot, 1976) and in multiphase flow situations (Shock, 1976).…”

Iterated linear programming strategies for non-smooth simulation: A penalty based method for vapor—liquid equilibrium applications

“…Usually, however, the number of phases is not known a priori. Typically, procedures have been proposed to address this nonsmooth problem (Boston and Britt, 1978;Fournier and Boston, 1981;Kinoshita and Takamatsu, 1986;and Nelson, 1987). A more systematic approach, involving the minimization of Gibbs free energy, has been implemented in the form of nonlinear programs (Gautam and Seider, 1979 In this study we identify and formulate a class of problems related to vapor-liquid equilibrium (VLE) which can be treated directly using a penalty function extension of our iterated LP constrained simulation approach.…”