Title: Graphical exergy analysis of retrofitted distillation column

Authors: Arief Budiman, Sutijan, Dyah Retno Sawitri

Addresses: Faculty of Engineering, Gadjah Mada University, Yogyakarta 55281, Indonesia. ' Faculty of Engineering, Gadjah Mada University, Yogyakarta 55281, Indonesia. ' Faculty of Industrial Technology, Islamic University of Indonesia, Yogyakarta 55501, Indonesia

Abstract: Thermodynamic analysis of a distillation column has important role for synthesising and developing energy-efficient distillation process. We have invented representation of this analysis to integrate characteristics of separation performance and exergy features of internal distillation column using Material-Utilisation Diagram (MUD). In this paper, we analyse separation performance and exergy loss phenomena for retrofitted distillation column, i.e., side heating–cooling and pump around in a distillation, on MUD. This MUD methodology displays Minimum Driving Force (MDF) for side heating-cooling and Close to Equilibrium Point (CEP) for pump-around system at a particular heat load.

Keywords: exergy analysis; MUD; material-utilisation diagram; distillation column; minimum driving force; retrofitting; thermodynamics; separation performance; side heating–cooling; pump around.

DOI: 10.1504/IJEX.2011.041034

International Journal of Exergy, 2011 Vol.8 No.4, pp.477 - 493

Received: 12 May 2010
Accepted: 05 Dec 2010
Published online: 28 Jun 2011 *

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