Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Binary isobaric vapor-liquid equilibrium (VLE) data for methanol (MeOH) + 2-(methoxymethoxy)-butane (SMMB), 2-butanol (SBOH) + di-sec-butoxymethane (DSBM) and SMMB + DSBM at 101.3 kPa were measured. The saturated vapor pressures for SMMB and DSBM in the corresponding temperature range were determined, and then regressed to obtain the Antoine parameters by Aspen Plus. The thermodynamic consistency of all the VLE data were confirmed by Herington area method and Van Ness differential test. T-x-y diagrams of the three systems were plotted. Related binary interaction parameters were obtained through the correlation using Wilson, NRTL and UNIQUAC models. Circular reaction approach was proposed and designed to solve the separation of azeotropic composition (SBOH + SMMB). Then the separation process for the quinary system of MeOH + methylal (DMM) + SBOH + SMMB + DSBM was proposed and simulated in Aspen Plus. The purity of the main product DSBM was 99.32 wt %.