3. A saturated liquid mixture containing 50% benzene in chlorobenzene is to be separated in a distillation column. The desired distillate composition is 90% benzene, with the distillate flow rate being 50% of the feed flow rate. The y-x diagram for the system at the system pressure is provided in Slide 4 a) Determine the minimum number of stages that must be used for this separation using McCabe-Thiele b) If we use a reflux ratio = 1.2, determine the required number of stages, assuming optimal feed location. Use McCabe-Thiele method. c) In an implementation in a distillation column using the same reflux ratio and compositions as the above, it was found that 10 actual stages are required. Give an estimate of the overall efficiency of the column. 1 0.9 0.8 0.7 0.6 0.5 GEHO SLICI COLOUSO Hints that you may find useful for solving this problem - 1. Recall under what conditions you require the minimum number of stages for a certain separation and how you draw these stages on the M-T chart. 2. Optimal feed stage is where the enrichings operating line meets the stripping operating porseline - if you know two of these, you should be able to find the 3rd one. 0.4 0.3 0.2 0.1 0 0 0.1 0.2 0.3 0.4 0.5 X 0.6 0.7 0.8 0.9 1 ng mga bata 12 BAGUS