Question

Minimum number of trays 100 kmol/hr of a feed of 60% benzene and 40% heptane is...

Minimum number of trays

100 kmol/hr of a feed of 60% benzene and 40% heptane is to be separated by distillation. The distillate is to be 90% benzene and the bottoms 10% benzene. The feed enters the column as 30 mol% vapor. Use R 1.5 times the minimum. Assume a constant relative voltaility of (alpha) of 4 and that the pressure is constant throughout the column at 1atm.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A mixture of Mol-100 kmol containing 70% benzene and 30% toluene must be separated at a...
A mixture of Mol-100 kmol containing 70% benzene and 30% toluene must be separated at a total pressure of 101.325 KPA (1 atm). A differential distillation column and an equilibrium(flash) distillation column are available in the enterprise to perform this operation. If 45 kmol distillate (top product) is obtained; a -) the composition of the distillate and remaining liquid obtained by differential distillation, B -) determine the composition of distillate and liquid obtained from equilibrium distillation. What distillation process would...
Distillation- McCabe-Thiele A saturated vapor feed (pure vapor at the dew point) containing 52 mol% toluene...
Distillation- McCabe-Thiele A saturated vapor feed (pure vapor at the dew point) containing 52 mol% toluene and 48 mol% n-octane is to be fractionated at 101.3 kPa abs. to give a distillate containing 95 mol% toluene at 10 kmol/hr and a bottoms containing 5 mol% toluene. Use McCabe-Thiele graphical method to answer the following questions: a) Draw a vapor-liquid equilibrium diagram. Do this in excel and use gridlines to produce a nice figure that you can use for the rest...
A distillation column has a feed of 100 kmol/h. The feed is 15 mol% heavy non-key,...
A distillation column has a feed of 100 kmol/h. The feed is 15 mol% heavy non-key, 35 mol% heavy key, and 50 mol% light key. The reflux ratio is 1.4 times the minimum. It is desired to have 99% recovery of the light key in the distillate. The mole fraction of light key in the distillate should be 0.85. Use the FUG approach to determine the number of ideal stages required. Equilibrium data: aLNK =3.5 aLK =1.5 aHK =0.85
The feed stream to a distillation column is 40 mol-% n-pentane and 60 mol% n-hexane. Feed...
The feed stream to a distillation column is 40 mol-% n-pentane and 60 mol% n-hexane. Feed flow rate is 2500 mol/h and feed temperature is 30 °C. The column operates at 1 atm pressure and uses a total condenser. A distillate with 97 mol-% n-pentane is desired. Bottoms from the column should contain 98 mol-% n-hexane. Calculate both product flow rates
We wish to separate a mixture of 60 mol% ethanol and 40 mol% n-propanol in a...
We wish to separate a mixture of 60 mol% ethanol and 40 mol% n-propanol in a distillation column with a partial reboiler and a total condenser. The feed rate is 1000 kmol/h, and feed is a saturated vapour. We desire a distillate product of 99 mol% ethanol and a bottoms product that is 0.8 mol% ethanol. Reflux is saturated liquid and CMO can be used. Equilibrium data can be approximated with an average relative volatility of 2.1 (ethanol is more...
1.   The liquid product from a flash distillation has a mole fraction of the more volatile...
1.   The liquid product from a flash distillation has a mole fraction of the more volatile component that is lower than the specified liquid purity. Should we decrease, increase, or hold constant the vapor molar flowrate to meet the specified liquid purity? Draw a sketch and explain why? 2.   If the reflux ratio increases, do the molar flowrates for the distillate, bottoms, reflux, and overhead vapor decrease, stay the same, or increase? Support your answer. 3)1000 kmol/h of feed with...
A saturated liquid feed at 1000.0 kmol/h that is 8.0 mol% ethane, 33.0 mol% propane, 49.0...
A saturated liquid feed at 1000.0 kmol/h that is 8.0 mol% ethane, 33.0 mol% propane, 49.0 mol% n-butane, and 10.0 mol% n-pentane is fed to a distillation column operating at 5.0 atm. The column has a total condenser and a partial reboiler. Recovery of propane in the distillate is 99.7%, and n-butane recovery in the bottoms is 99.8%. a) Find N min from the Fenske equation (hand calculation). b) Find (L/D) min from the Underwood equation (hand calculation). c) Use...
A liq mixture of benzene-toluene is to be distilled in a fractionating tower at 101.3 kPa...
A liq mixture of benzene-toluene is to be distilled in a fractionating tower at 101.3 kPa pressure. The feed of 100 kg mol/h is liq and it contains 45 mole % benzene and 55 mole % toluene and enters at 327.6 K (130 ◦F). A distillate containing 95 mole % benzene and 5 mole % toluene and a bottoms containing 10 mole % benzene and 90 mole % toluene are to be obtained. The reflux ratio is 4:1. The average...
Rectification. McCabe-Thiele Method. A mixture of benzene-toluene is to be distilled in a fractionating tower at...
Rectification. McCabe-Thiele Method. A mixture of benzene-toluene is to be distilled in a fractionating tower at 101.3 kPa. The column is fed 120 kg mol /h of a saturated liquid at the boiling point with 60 mol % benzene and 40 mol % toluene. The content of the distillate is 92 mol % benzene, and of the bottoms 5 mol % benzene. The reflux ratio is 3:1. (a) Calculate the kg mol/h distillate: D=_______ (b) Calculate the kg mol/h bottoms:...
Separation Process: Suppose a saturated liquid feed of a benzene (B)/toluene (T) mixture (50 mol% B)...
Separation Process: Suppose a saturated liquid feed of a benzene (B)/toluene (T) mixture (50 mol% B) to a column is to be separated into a high purity distillate that is has a mole fraction of B equal to 0.9999 with a bottoms product mole fraction of 0.10. You may take the relative volatility to be aBT = 2.49 at the temperature that the column is operated. You are also given the reflux ratio to be 10.0, assuming a total condenser....