ALGORITHMS OF SOME COMPUTATIONAL METHODS OF MULTICOMPONENT MASS-TRANSPORT IN MIXTURES OF REAL FLUIDS

For Method I and Method II (Kubaczka and Bandrowski, Chem. Engng Sci. 46, 539, 1991) of calculation of multicomponent mass transfer in mixtu res of real fluids, the computation of ''matrizant'' in the form of a power function: [Phi] = [Phi(0)] + {[Phi(1)] - [Phi(0)]} x l(4) has be en proposed. The results of the calculation of mass transport in the g aseous phase and in the process of multicomponent condensation in the presence of an inert component have been presented. Also a few variant s of algorithms of calculation of fluxes for these methods with new an d old forms of the ''matrizant'' function have been analyzed with the aim of selecting the most effective algorithm for a given method. It h as been shown that the effectiveness of the chosen algorithm for Metho d I and Method II is comparable with the effectiveness of Taylor's (Co mputers chem. Engng 6, 69-75 1982b) algorithm for the method of Stewar t and Prober (Ind. Engng Chem. Fundam. 3, 224-235, 1964) and with that of the algorithm of Taylor and Webb (Computers chem. Engng 5, 61-73, 1981) for the method of Krishna (Chem. Engng Sci. 32, 659-667 1977).