Energy-saving distillation flowsheets for crude isopropanol separation with different solvents
The work is devoted to the development of energy-saving schemes for the separation of crude isopropanol. The model for describing vapor-liquid equilibrium in the crude isopropanol was selected. The entrainer selection for the separation of crude isopropanol was carried out. Technological flowsheets for the separation of crude isopropanol were designed, and their optimization was carried out. Aspen Plus© software package was used for all calculations. It was found that the three-column extractive distillation flowsheet with glycerin as entrainer is more energy effective.