The production processes included catalytic dehydration of methanol in an adiabatic fixed-bed reactor and two columns product separations. In this study, the technological process for dimethyl ether (DME) synthesis is built on PRO/II platform based on the combined parameters of the reaction dynamic model for methanol dehydration reaction, the improved NRTL model of the liquid phase, the PR mode...

ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept, as reported recently in this journal. The present paper describes the first application of this concept to the evaluation of thermophysical properties for binary chemical systems. Five activity-coefficient models have been implemented for representation of phase-equilibrium data (vapo...

The presence of both critical and azeotropic states in the vapor-liquid equilibria (VLE) is a very important issue chemical refrigeration engineering. knowledge phase behavior (subcritical phase/supercritical phase) refrigerant allows designing optimizing industrials processes. However, it rare to find data for this information, which poses great challenge researchers develop predictive correla...

The current challenges of the pharmaceutical industry regarding environmental impact caused by its waste have led to design and development more efficient industrial processes. In this context, solubility studies are at core different processes, such as formulation, preformulation, synthesis, purification, recrystallization, quantification, quality control. This research evaluates sulfamerazine...

Terpenes are important varietal compounds responsible for the characteristic aromas of alcoholic beverages. Reliable vapor–liquid equilibrium (VLE) data this class aroma in hydroalcoholic media is essential to understand their behavior during distillation and thus achieve a desired quality distilled products. In work, experimental measurements VLE ?-terpineol highly diluted ethanol–water mixtur...

Methanol (also known as CH3OH, methyl alcohol, hydroxymethane, wood or carbinol) is a widely used primary raw material. It one of the first organic chemicals to find extensive laboratory and industrial use. water are ideal binary systems that can be separated by conventional distillation. This study aims separate methanol-water using simulated double-effect distillation process in Aspen Plus. T...

Acetaldehyde diethyl acetal (herein called acetal) is an important pollutant of anhydrous ethanol. Isobaric vapor–liquid equilibrium (VLE) ethanol–acetal binary system was measured using a vapor condensate and liquid circulation VLE still. The experimental data were correlated with Wilson, nonrandom two-liquid (NRTL), universal quasichemical (UNIQUAC) activity coefficient models, which found su...