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Thermodynamics • Braz. J. Chem. Eng. 31 (2) • June 2014 • https://doi.org/10.1590/0104-6632.20140312s00001590 linkcopy

Open-access Simple multicomponent batch distillation procedure with a variable reflux policy

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    Abstract

    This paper describes a shortcut procedure for batch distillation simulation with a variable reflux policy. The procedure starts from a shortcut method developed by Sundaram and Evans in 1993 and uses an iterative cycle to calculate the reflux ratio at each moment. The functional relationship between the concentrations at the bottom and the dome is evaluated using the Fenske equation and is complemented with the equations proposed by Underwood and Gilliland. The results of this procedure are consistent with those obtained using a fast method widely validated in the relevant literature.

    Batch distillation; Variable reflux policy; Shortcut procedure

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