A vapor-liquid mixture consisting of 25% steam and 75% methanol (A) and 25% ethanol (B) as mole percentage is fed to a distillation column continuously operating at atmospheric pressure conditions at...

Extracted text: A vapor-liquid mixture consisting of 25% steam and 75% methanol (A) and 25% ethanol (B) as mole percentage is fed to a distillation column continuously operating at atmospheric pressure conditions at a flow rate of 100 kmol / h. From this column operated with 1.2 times the minimum riflax, a head product containing 96% methanol in mole percent, a by-product containing 80% ethanol and a base product containing 95% ethanol is drawn. If the by- product flow rate is 15 kmol / h, find the location of the feed and by-product racks and the required theoretical number of racks using the McCabe-Thiele graphical method using the balance values given in the table. System balance values (1 atm) 0.000 0.134 0.242 0.398 0.32 0.401 0.542 0.652 0.79 0.873 1.000 XA(m ol frak.) yA(m 0.000 0.183 0.326 0.836 0.428 0.529 0.676 0.759 0.858 0.919 1.000 ol frak.)