A real column design exergy optimization of a cryogenic air separation unit

J. Rizk, M. Nemer and D. Clodic

Energy, 2012, vol. 37, issue 1, 417-429

Abstract: Distillation columns are one of the main methods used for separating air components. Their inconvenient is their high energy consumption. The distillation process is simulated in three types of columns and the exergy losses in the different parts calculated. A sensitivity analysis is realized in order to optimize the geometric and the operational parameters of each type of column. A comparative exergy analysis between the distillation columns considered for cryogenic air separation shows that the exergy efficiency of a double diabatic column, with heat transfer all through the length of the column, is 23% higher than that of the conventional adiabatic double columns.

Keywords: Exergy analysis; Distillation columns; Diabatic process; Cryogenic air separation (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:37:y:2012:i:1:p:417-429

DOI: 10.1016/j.energy.2011.11.012

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