Abstract:
This research utilized the exergy loss analysis in any process of distillation column with equilibrium model to take driving force of light component evaporation and of heavy component condensation for shortcut design of intermediate condenser / reboiler. The results showed that the column has not been optimum. Therfore, the premixing model is introduced for the calculation of exergy loss of any process in each tray with the limitation of the demonstation of exergy loss of premixing in vapor phase and liquid phase of feed tray. However, this information still sufficient for improving energy efficiency by the concept that the high energy efficiency comes from the smooth exergy loss along the column, since profile of exergy loss is single parameter that account the driving force of mass and heat trasfer in column. This concept is verified with case for the non-reaction multicomponent distillation of n-heptane, n-octane, n-nonane, n-decane and n-C15 with 30 trays. The results show that the column has been improved by analysis of distribution of exergy loss in column and any processes exergy loss of tray have high efficient (94.48 percent) than column without the analysis of any exergy loss processes of tray (94.23 percent). Hence, detail of any process exergy loss and parameter that influence to exergy loss can help to improve efficiency of column.