Extractive distillation modeling of the ternary system 2-methoxy-2-methylpropane-methanol-butan-1-ol
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Zuzana Labovská
,
Pavol Steltenpohl
Abstract
Influence of model complexity on the separation equipment performance was investigated. As an example, separation of azeotrope formed by 2-methoxy-2-methylpropane and methanol was considered using butan-1-ol as an extractive solvent. Non-equilibrium model of a column for extractive distillation accounting for the mass and heat transfer rates was composed according to the rigorous Maxwell-Stefan theory. An empirical AICHE correlation was adopted for the calculation of binary mass transfer coefficients at column trays. Results of the column steady-state operation were compared with those obtained assuming different equilibrium models. Effect of the quality of the vapor-liquid equilibrium (VLE) description on the results of the separation simulation considering real behavior of either liquid or both equilibrium phases was tested. Real behavior of the liquid phase was computed according to the NRTL equation taking into account binary and, in some cases, also ternary equilibrium data. In case of real behavior of the vapor phase, the equation of state in the form of virial expansion was employed. Qualitative agreement was found comparing the simulation results calculated by equilibrium and non-equilibrium models of the extractive distillation column while using the same description of ternary VLE.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
Artikel in diesem Heft
- Mathematical model of aerobic stabilization of old landfills
- Investigation of kinetics of anaerobic digestion of Canary grass
- Extractive distillation modeling of the ternary system 2-methoxy-2-methylpropane-methanol-butan-1-ol
- Agitation of a gas-solid-liquid system in a vessel with high-speed impeller and vertical tubular coil
- Experimental analysis of the hydrodynamics of a three-phase system in a vessel with two impellers
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- Mixed oxides of transition metals as catalysts for total ethanol oxidation
- Speciation of heavy metals in sewage sludge after mesophilic and thermophilic anaerobic digestion
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Artikel in diesem Heft
- Mathematical model of aerobic stabilization of old landfills
- Investigation of kinetics of anaerobic digestion of Canary grass
- Extractive distillation modeling of the ternary system 2-methoxy-2-methylpropane-methanol-butan-1-ol
- Agitation of a gas-solid-liquid system in a vessel with high-speed impeller and vertical tubular coil
- Experimental analysis of the hydrodynamics of a three-phase system in a vessel with two impellers
- Influence of the ionic form of a cation-exchange adsorbent on chromatographic separation of galactooligosaccharides
- Mixed oxides of transition metals as catalysts for total ethanol oxidation
- Speciation of heavy metals in sewage sludge after mesophilic and thermophilic anaerobic digestion
- Oxidation of ammonia using modified TiO2 catalyst and UV-VIS irradiation
- Antioxidant potential and authenticity of some commercial fruit juices studied by EPR and IRMS
- Etching and recovery of gold from aluminum substrate in thiourea solution
