Why is it necessary to continuously increase the reflux ratio in a batch distillation column to ensure product quality?
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Dear fellow distillation enthusiasts: I have just started working with batch distillation, and there is one issue I don’t understand. I would like to ask everyone for their advice; I hope you can kindly help me. The question is as follows: Why is it necessary to continuously increase the reflux ratio in a batch distillation column in order to ensure product quality? Or in other words, why does the product quality keep declining under constant reflux ratio operating conditions? Thank you all
Why is it necessary to continuously increase the reflux ratio in a batch distillation column to ensure product quality? In the operation of a distillation column, if the feed composition and feed conditions remain unchanged and only the reflux ratio is increased, what effect does this have on the product at the top of the column? Increasing the reflux ratio reduces the number of trays required to achieve the desired quality of the product at the top of the column.
In batch distillation, the composition of the overhead product changes throughout the process, as does its quantity; increasing the reflux ratio can stabilize the operation
Increasing the reflux in continuous distillation works the same way; this is basic distillation knowledge!