(234a) Thermodynamic Mechanism of Self-Heat Recuperative Distillation System

In the last several years the authors have been developing the self-heat recuperation technology for the heating and cooling thermal processes in which the heat of an effluent stream is recuperated and recycled for feed stream heating by the adiabatic compression of gas and/or vapor. Applying this technology to the distillation system, a drastic energy saving of more than 80% can be achieved.

In this study, the thermodynamic mechanism of self-heat recuperative distillation system is clarified in terms of exergy analysis by using module expression process flowsheet and temperature-entropy diagram.