3. Using the Chattanooga distillation column, quantify the effect of changing the reflux ratio and reboiler power on the product concentration and the mass transfer coefficient. All measurements should be taken after the column has reached steady-state, which must be confirmed by a mass balance, temperature profiles, and/or any other relevant measurable quantities. Explain and outline in the report the procedure you used for sampling so that Rotations 2 and 3 can use the same method.
4. Determine the operating conditions for which the column will flood. Determine if a generalized flooding correlation can be applied to this column so flooding can be predicted and prevented. To achieve the greatest throughput, it is suggested to operate the column at vapor flow rates just below flooding.
6. Prepare (in advance, whenever possible) McCabe-Thiele diagrams for each of your runs, and evaluate the placement (or misplacement) of the feed.