Gravityreturn Reflux Versus Pumpedback Reflux

Many arguments have taken place as to whether it is better to locate the condenser overhead and provide gravity return reflux, or to locate the condenser at ground level (or nearly so) and pump the reflux back to the column. With the condenser overhead, the vapor and reflux lines can be short, which favors good overhead composition control. On the other hand, a ground level condenser r.

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