LIQUID-VAPOR PHASE-EQUILIBRIA IN SYSTEMS OF FLUOROBENZENE AND BENZENEWITH DIMETHYLFORMAMIDE AND N-METHYLPYRROLIDONE

Liquid-vapor phase equilibria were studied in binary systems consistin g of fluorobenzene with dimethylformamide and N-methylpyrrolidone and the binary interaction parameters of the components of this system wer e determined. Satisfactory accord was found between the experimental d ata and calculated results obtained using the Wilson equation on the l iquid-vapor phase equilibria in three-component systems consisting of benzene, fluorobenzene, and a solvent. The suitability of the Wilson e quation as a model for the liquid-vapor phase equilibrium for the comp uter calculation of an extraction distillation column for the removal of benzene from fluorobenzene using dimethylformamide as a selective s olvent was shown.