Question: 2. A continuous still fitted with a partial reboiler is fed with 200 kmol/h of an ethanol/water mixture containing 15 mol% ethanol. The feed is

2. A continuous still fitted with a partial reboiler is fed

2. A continuous still fitted with a partial reboiler is fed with 200 kmol/h of an ethanol/water mixture containing 15 mol% ethanol. The feed is a liquid at bubble point. The vapour that leaves the column at 106.8 kmol/h is completely condensed, but not sub-cooled. A reflux ratio of 2 is used, and the bottom product contains 2 mol% ethanol. 2a. Find the composition of the distillate product. 2b. Find the temperature of the vapour leaving the reboiler. 2c. Find the composition of the liquid running down from the 3rd theoretical plate in the column. 2d. Calculate the heat load of the condenser in W

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