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Distillation of a Complex Mixture. Part II: Performance Analysis of a Distillation Column Using Exergy

Department of Chemical Engineering, University of Mostaganem, Mostaganem, Algeria
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Entropy 2007, 9(3), 137-151; https://doi.org/10.3390/e9030137
Received: 7 December 2006 / Accepted: 13 September 2007 / Published: 25 September 2007
To analyze the performance of the separation process, we have introduced thethermodynamic concept of exergy through the exergetic efficiency of the column. Thesimulation results show that the exergetic output is relatively low and that the producedirreversibility fluxes are distributed throughout the whole column in a non-uniform manner.They are particularly significant in the condenser, boiler and tray feed. The influence of thevarious operating parameters (temperature, concentration and irreversibility in both sectionsof the column) is also established. To emphasize the results, the relation in equation 17, ispresented graphically to evaluate the cumulative irreversibilities from the overhead to thebottom. This presentation is equivalent to the Grassmann diagram. View Full-Text
Keywords: High pressure distillation; complex mixture; exergetic efficiency; irreversibility; pinch temperature. High pressure distillation; complex mixture; exergetic efficiency; irreversibility; pinch temperature.
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Mustapha, D.; Sabria, T.; Fatima, O. Distillation of a Complex Mixture. Part II: Performance Analysis of a Distillation Column Using Exergy. Entropy 2007, 9, 137-151.

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