A mixed hydrocarbon stream must be distilled in a continuous distillation column. Table 1 shows the...

 

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A mixed hydrocarbon stream must be distilled in a continuous distillation column. Table 1 shows the feed, distillate, bottoms products, and K-value. At the boiling point, the feed enters as a liquid. The K-value was determined at 4°C and 860 kPa. The K-values are assumed to be constant regardless of temperature variation. Table 1: The table of molar flowrates for the feed, distillate, bottoms products and the K-value Feed, kmol/h Distillate, kmol/h Bottoms, kmol/h Ki CH4 250 2.6 C₂H4 350 1.0 C₂H6 400 2 0.7 C3H6 30 9 0.3 C₂H₂ 12 0.25 n-C4H10 80 0.11 2.1. Determine the light key and heavy key. (2) 2.2. Calculate the relative volatility (a) of each component with respect to the heavy key component. (6) 2.3. Calculate the mole fraction for the feed, distillate and bottoms products. List all the numbers using the Table. (10) A mixed hydrocarbon stream must be distilled in a continuous distillation column. Table 1 shows the feed, distillate, bottoms products, and K-value. At the boiling point, the feed enters as a liquid. The K-value was determined at 4°C and 860 kPa. The K-values are assumed to be constant regardless of temperature variation. Table 1: The table of molar flowrates for the feed, distillate, bottoms products and the K-value Feed, kmol/h Distillate, kmol/h Bottoms, kmol/h Ki CH4 250 2.6 C₂H4 350 1.0 C₂H6 400 2 0.7 C3H6 30 9 0.3 C₂H₂ 12 0.25 n-C4H10 80 0.11 2.1. Determine the light key and heavy key. (2) 2.2. Calculate the relative volatility (a) of each component with respect to the heavy key component. (6) 2.3. Calculate the mole fraction for the feed, distillate and bottoms products. List all the numbers using the Table. (10)

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