Question: Please provide the step-by-step calculation for the mass balance and also the schematic diagram of the distillation process . 11.12. Extraction distillation with phenol. Four

Please provide the step-by-step calculation for the mass balance and also the schematic diagram of the distillation process.
11.12. Extraction distillation with phenol. Four hundred Ibmol/h of an equimolar mixture of n-heptane and toluene at 200F and 20 psia is to be separated by extractive distilla- tion at 20 psia, using phenol at 220F as the solvent, at a flow rate of 1,200 lbmol/h. Design a suitable two-column system to obtain rea- sonable product purities with minimal solvent loss
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