May I ask the experienced masters?
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What are the advantages and disadvantages of using external control to regulate the reflux temperature compared to using reflux control in the operation of a distillation column?
I don’t understand – using external control to regulate the backflow temperature? Aren’t feed control and reflux control the more common ones?
What should be controlled is the top temperature of the tower. Top temperature control is a prerequisite for ensuring quality. Therefore, reflux control is important, while reflux ratio control is relatively easy to manage.
Reflux is used to control the temperature at the top of the tower, while export generally refers to the removal of the product