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The design equations are based on the Underwood equations for the calculation of minimum reflux (reboil) ratio, the analytical formulations of the distillation line, the Eigenfunction and the number of theoretical stages for each mass transfer section of the column.
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A new rigorous method for the determination of the minimum reflux and reboil ratios for nonideal homogeneous distillation is outlined.
The minimum reflux provides the minimum energy requirements, and the infinite reflux provides the feasibility conditions.
For each design, different optimal reflux to minimum reflux ratio is assumed.
This method can be used to find the minimum reflux ratio, minimum number of stages at total reflux, and number of stages at given reflux ratio, as well as the reflux ratio with given number of stages.
The optimum reflux ratio was significantly higher than 1.2 times the minimum reflux ratio suggested by traditional heuristics.
The optimum reflux ratio predicted by the capacity variables is around 1.5 times the minimum reflux ratio, which is close to the accepted heuristic rule of 1.03 1.3 times the minimum reflux ratio.
The analysis of the joining of sectional trajectory bundles is carried out at minimum reflux ratio and reflux ratio above minimum.
In this work, the minimum reflux of Petyluk system for ideal ternary mixtures is considered.
Aspen Plus steady state simulation shows that this methodology estimates the minimum reflux values.
The design of distillation columns requires the calculation of the minimum reflux.
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