Relationship between distillation column reflux ratio and feed rate
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In our actual production, I have found that when the feed rate increases, it is possible to reduce the reflux rate appropriately; even if the reflux rate isn’t reduced, the feed rate doesn’t increase either, which is contrary to the need to maintain a certain reflux ratio. Yet the product quality can still be ensured
This actually indicates that your distillation section capacity is surplus.
This indicates that your tower has a high degree of operational flexibility, or that the feed rate to the tower was not optimal in the past.
When the tower is operating under overload conditions, the reflux ratio is usually a bit lower than under normal conditions. If the control is based strictly on the original reflux ratio, it can easily lead to components not meeting the required standards, and in severe cases, to flooding. The specific reflux ratio depends on the proportions of the components in the feed; if the content of light components is high, the reflux ratio will be lower, while it will be higher in the opposite case. .
It indicates that there is still a surplus in the reflux ratio of the distillation tower