Energy balance control for fractionation tower

Distillation: processes – separatory – With measuring – testing or inspecting – Of temperature or pressure

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202160, B01D 342

Patent

active

042921384

ABSTRACT:
This invention relates to an improved apparatus and process for controlling heat input to a fractionation tower so that a proper energy balance is maintained. The apparatus and method for controlling a fractionation tower and process wherein feed and heat flow into the tower and feed is distilled and separated into distillate and bottoms, said distillate flowing from the tower through an overhead line into a condenser where it is allowed to condense before it is drawn off as product with a portion of this product being returned to the tower as reflux, and said bottoms being allowed to at least partially collect in the tower thereby establishing a liquid level which is allowed to fluctuate within predetermined limits, which method comprises generating and using the signal:

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