HIGH-PRESSURE PHASE-EQUILIBRIUM MODELING OF MIXTURES CONTAINING ASSOCIATING COMPOUNDS AND GASES

In the present work, the group contribution-associating-equation of st ate (GCA-EOS) is applied for modeling high pressure phase equilibrium of mixtures containing gases and associating fluids. The GCA performan ce is compared with other group contribution local composition EOS. Ba sed on extensive testing, it is concluded that the GCA-EOS is a reliab le method for modeling the extraction and dehydration of alcohols from aqueous solutions using gases at near critical conditions as solvents (dehyextract process). The parameter tables for the GCA-EOS model hav e been revised and extended. (C) 1997 Elsevier Science B.V.