A feed stream consisting of 32.1 mole% n-C4 and 67.9 mole% n-Cs is supplied to a...
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A feed stream consisting of 32.1 mole% n-C4 and 67.9 mole% n-Cs is supplied to a fractionating column as a saturated liquid at 50 psig. The feed rate is 100 lbmole/hr, and a distillate containing 88.5 mole% n-C4 is produced at a rate of 30 lbmoles/hr. A total condenser at the top of the column removes 1.0 10° BTU/hr in producing a saturated liquid for the distillate and reflux streams. The heat of vaporization of both n-C4 and n-Cs is 8500 BTU/lbmole. Please determine the following: (a) The composition of all terminal streams. . (b) The external reflux ratio. (c) The molar flowrate of vapor and of liquid passing through the column above the feed plate. (d) The molar flowrate of vapor and of liquid passing through the column below the feed plate. (e) The number of theoretical trays required to produce the given separation, assuming the feed is introduced at the optimum location, and a partial reboiler is used for vapor return. (f) The temperature at each theoretical tray in the column. (g) The heat duty on the partial reboiler (BTU/hr). (h) The minimum reflux ration, Rmin. A feed stream consisting of 32.1 mole% n-C4 and 67.9 mole% n-Cs is supplied to a fractionating column as a saturated liquid at 50 psig. The feed rate is 100 lbmole/hr, and a distillate containing 88.5 mole% n-C4 is produced at a rate of 30 lbmoles/hr. A total condenser at the top of the column removes 1.0 10° BTU/hr in producing a saturated liquid for the distillate and reflux streams. The heat of vaporization of both n-C4 and n-Cs is 8500 BTU/lbmole. Please determine the following: (a) The composition of all terminal streams. . (b) The external reflux ratio. (c) The molar flowrate of vapor and of liquid passing through the column above the feed plate. (d) The molar flowrate of vapor and of liquid passing through the column below the feed plate. (e) The number of theoretical trays required to produce the given separation, assuming the feed is introduced at the optimum location, and a partial reboiler is used for vapor return. (f) The temperature at each theoretical tray in the column. (g) The heat duty on the partial reboiler (BTU/hr). (h) The minimum reflux ration, Rmin.
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