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

Joelle Rizk 1 Maroun Nemer 1 Denis Clodic 1
1 CEP/Paris
CEP - Centre Énergétique et Procédés
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.
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Submitted on : Wednesday, January 2, 2013 - 2:23:05 PM
Last modification on : Thursday, September 24, 2020 - 5:22:04 PM

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Joelle Rizk, Maroun Nemer, Denis Clodic. A real column design exergy optimization of a cryogenic air separation unit. Energy, Elsevier, 2012, 37 (1), pp.417-429. ⟨10.1016/j.energy.2011.11.012⟩. ⟨hal-00769595⟩

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