Question: *. McCabe-Thiele Side Stream (6D21) A distillation column with a total condenser and a total reboiler is separating ethanol from water. Reflux is returned as

*. McCabe-Thiele Side Stream (6D21) A distillation column with a total

*. McCabe-Thiele Side Stream (6D21) A distillation column with a total condenser and a total reboiler is separating ethanol from water. Reflux is returned as a saturated liquid, and boilup is returned as a saturated vapor. Constant molal overflow can be assumed. Assume that the stages are equilibrium stages. Column pressure is 1atm. A saturated liquid feed that is 32mole% ethanol is fed to the column at 1000kgmoles/hr. The feed is to be input on the optimum feed stage. We desire a distillate composition of 80 mole % ethanol and a bottoms composition that is 2mole% ethanol. A liquid side stream is removed on the eighth stage from the top of the column at a flow rate of S=457.3kg moles /hr. This liquid is sent to an intermediate reboiler and vaporized to a saturated vapor, which is returned to the column at its optimum feed location. The external reflux ratio is L0/D=1.86. Find the optimum feed locations of the feed and of the vapor from the intermediate reboiler. Find the total number of equilibrium stages required. Be very neat

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