A stream of 100 kmol/h of a binary mixture of Acetone and Methanol contains 45 mol% of the most volatile and needs to be distilled to provide solutions of its components in high purity. A continuous column of dishes with reflux (fractional distillation) will be used for the service, where the mixture will be fed as a saturated liquid. It is desired to obtain a liquid solution of the most volatile with 95% in mol as the top product. Thus, a total capacitor will be used. As a bottom product, 90% by mol of the least volatile should be obtained. The column will be operated at about 1atm. A reflux ratio of 3 mol fed back for each mol of distillate withdrawn will be used. Using the McCabe-Thiele method, one asks: a) What is the distillate output from the column? What is the bottom of the column production? b) How many equilibrium stages would the column have? How many ideal dishes would be needed for the service? In that case, what would be the number of the feeding plate? c) If we used a partial condenser, how many ideal dishes would be needed for the service? In that case, what would be the number of the feeding plate?
A stream of 100 kmol/h of a binary mixture of Acetone and Methanol contains 45 mol% of the most volatile and needs to be distilled to provide solutions of its components in high purity. A continuous column of dishes with reflux (fractional distillation) will be used for the service, where the mixture will be fed as a saturated liquid. It is desired to obtain a liquid solution of the most volatile with 95% in mol as the top product. Thus, a total capacitor will be used. As a bottom product, 90% by mol of the least volatile should be obtained. The column will be operated at about 1atm. A reflux ratio of 3 mol fed back for each mol of distillate withdrawn will be used. Using the McCabe-Thiele method, one asks:
a) What is the distillate output from the column? What is the bottom of the column production?
b) How many equilibrium stages would the column have? How many ideal dishes would be needed for the service? In that case, what would be the number of the feeding plate?
c) If we used a partial condenser, how many ideal dishes would be needed for the service? In that case, what would be the number of the feeding plate?
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