Selection of the distillation column reflux ratio
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I’m a beginner with HYSYS. I would like to ask the more experienced users: when calculating a distillation column, how is the reflux ratio determined? Or which parameters or graphs should be used to find the appropriate reflux ratio? Thank you
I’m not familiar with HYSIS; in Aspen, it’s done this way: first, a simplified model (dustwu) is used to obtain an estimate of the minimum number of theoretical plates and the minimum reflux ratio. When more detailed calculations are carried out, the reflux ratio is usually set at 1.2 to 2 times the minimum value, with the specific value chosen depending on the separation requirements. HYSIS should have a similar function as well