Question

a stream of aqueous methanol having 45 mol % ch3oh is to be separated into a...

a stream of aqueous methanol having 45 mol % ch3oh is to be separated into a top product having 96 mole % methanol and a bottom liquid with 4% methanol. the feed is at its bubble point and the operating pressure is 101.3 kpa. a reflux ratio of 1.5 is suggested. (a) Determine the number of ideal trays. (b) Find the number of real trays of the "overall tray efficiency" is 40%. On wish tray should the feed be introduced?

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
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:...
FULL SOLUTION PLEASE Fifty mol% methanol in water at 101 kPa is continuously distilled in a...
FULL SOLUTION PLEASE Fifty mol% methanol in water at 101 kPa is continuously distilled in a seven-plate, perforated-tray column, with a total condenser and a partial reboiler heated by steam. Normally 100 kmol/h of feed is introduced on the third plate from the bottom. The overhead product contains 90 mol% methanol, and the bottoms 5 mol%. One mole of reflux is returned for each mole of overhead product. Recently it has been impossible to maintain the product purity in spite...
Consider the distillation of a saturated liquid feed of 0.16 mol fraction methanol and 0.84 mol...
Consider the distillation of a saturated liquid feed of 0.16 mol fraction methanol and 0.84 mol fraction water. The column has a side stream of composition 0.5 mol fraction methanol and a flow rate of 7.7% of the feed rate. The top product is to contain 0.77 mol fraction methanol and the bottom product is to contain 0.02 mol fraction methanol. The column operates at 1 atm, and the usual simplifying assumptions can be made. The external reflux ratio is...
Fifty mol% methanol in water at 101 kPa is continuously distilled in a seven-plate, perforated-tray column,...
Fifty mol% methanol in water at 101 kPa is continuously distilled in a seven-plate, perforated-tray column, with a total condenser and a partial reboiler heated by steam. Normally 100 kmol/h of feed is introduced on the third plate from the bottom. The overhead product contains 90 mol% methanol, and the bottoms 5 mol%. One mole of reflux is returned for each mole of overhead product. Recently it has been impossible to maintain the product purity in spite of an increase...
A distillation column should separate benzene and toluene in a 30 t/h feed flow containing 40...
A distillation column should separate benzene and toluene in a 30 t/h feed flow containing 40 % benzene and 60 % toluene. The overhead product should be 97 % benzene and bottom product 98 % toluene. The molar reflux ratio RD = 3.5 and the saturated liquid feed has a boiling point of 95 °C. Calculate flow rates of distillate and bottom product . determine the number of ideal trays needed for the separation . Where is the feed tray...
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...
Q2) Consider 100 kmole/h of feed which includes 20 mole % ethanol in water. We wish...
Q2) Consider 100 kmole/h of feed which includes 20 mole % ethanol in water. We wish to concentrate ethanol to 60 % with a bottom product that is no more than 2 % ethanol. The feed is a saturated liquid. The reflux ratio should be 1.5*Rmin (Rmin: Minimum reflux ratio). If the trays have a Murphree efficiency of 75 % based on the vapor, calculate the number of stages and optimal feed stage. The column is run at 1 atm....
Methyl tertiary butyl ether (MTBE) is used as an anti-knock additive in petrol (gasoline). It is...
Methyl tertiary butyl ether (MTBE) is used as an anti-knock additive in petrol (gasoline). It is manufactured by the reaction of isobutene (T = 50 oC, P=400 kPa) with methanol (T=25 degree C, P=400 kPa): CH3OH (l) + C4H8 (l) -> C5H12O (l) The reaction is highly selective and practically any C4 stream containing isobutene can be used as a feedstock. A 10 per cent excess of methanol is used to suppress side reactions. The mixture of the two feed...