Question

A mixture of 1000 kg/h contains an equal parts by mass of methanol and water is...

A mixture of 1000 kg/h contains an equal parts by mass of methanol and water is distilled. Product streams leave the top and the bottom of the distillation column. The flow rate of the bottom stream is measured at 673kg/h and the overhead stream is analyzed and found to contain 96 wt % methanol. a. construct a flowchart of the process and perform the degree of freedom analysis. [6 marks] b' Determine the mass and mole fractions of methanol and water in the bottom product stream. [5 marks] calculate the rnolar flow rates of methanol and water in the bottom product stream. [5 marks] The bottom product stream is analyzed and the mole fraction of rnethanol is found to be significantly higher than the value calculated in part (b&c), state FOUR reasons for the discrepancy.

Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A liquid mixture contains 50 wt% ethanol (E), '10 wt% of a dissolved solute (S) and...
A liquid mixture contains 50 wt% ethanol (E), '10 wt% of a dissolved solute (S) and the balance is water (W). A stream of this mixture F, is fed to a continuous distillation column operating at a steady state. Two streams emerge from the column as the top product, P and the bottom waste Q, respectively. The column design class for the product streams is to have equal mass flow rate, and for the top product stream, P is to...
Problem 4.20: A 100 kmol/h stream that is 97 mol% carbon tetrachloride (CCl4) and 3% carbon...
Problem 4.20: A 100 kmol/h stream that is 97 mol% carbon tetrachloride (CCl4) and 3% carbon disulfide (CS2) is to be recovered from the bottom of a distillation column. The feed to the column is 16 mol% CS2 and 84% CCl4, and 2% of the CCl4 entering the column is contained in the overhead stream leaving the top of the column. (a.) Draw and label a flowchart of the process and do the degree-of-freedom analysis. (b.) Calculate the mass and...
A distillation column is used to separate 280 kg /h of a mixture containing 30 wt%...
A distillation column is used to separate 280 kg /h of a mixture containing 30 wt% Propanol (C3 H8 O) in Octanol (C8 H14 O), to give top product of 83% mole Propanol and 67% mole Octanol waste (at bottom). 1. Calculate the mole flow rate, mole fraction and mole percentage of each stream in the (F, D & W) around the column? All results should be tabulated in the Table below. 2. Calculate the heat removed by condenser? Given...
A distillation column is used to separate 930 kg /h of a mixture containing 40 wt%...
A distillation column is used to separate 930 kg /h of a mixture containing 40 wt% Butanol (C4 H10 O) in Pentanol (C5 H12 O), to give top product of 70% mole Butanol and 60% mole Pentanol waste (at bottom). 1. Calculate the mole flow rate, mole fraction and mole percentage of each stream in the (F, D & W) around the column? All results should be tabulated in the Table below. 2. Calculate the heat removed by condenser? Given...
A stream containing 25 wt% methanol in water is to be diluted with a second stream...
A stream containing 25 wt% methanol in water is to be diluted with a second stream containing 10% methanol in water to form a product solution containing 17% methanol. Draw and label a flowchart of this process, and calculate the ratio of the mass flow of the solution that consists of 17% methanol to that with 25% methanol. (0.875)
A distillation column is used to separate an ethanol-water feed into a high purity alcohol and...
A distillation column is used to separate an ethanol-water feed into a high purity alcohol and waste water. The feed has a composition of 20 mole % C2H5OH, the distillate contains 85 mole % alcohol and the bottoms have a 3 mole % alcohol concentration. (a) For 2.5 t/h of feed draw a carefully labelled process flow diagram. (b) Calculate the molar flow rates of the distillate and bottom streams. (c) What percentage of the alcohol is recovered in the...
A process is carried out in which a mixture containing 25.0 wt% methanol, 42.5% ethanol, and...
A process is carried out in which a mixture containing 25.0 wt% methanol, 42.5% ethanol, and the balance water is separated into two fractions. A technician draws and analyzes samples of both product streams and reports that one stream contains 39.8% methanol and 31.5% ethanol and the other contains 19.7% methanol and 41.2% ethanol. You examine the reported figures and tell the technician that they must be wrong and that stream analyses should be carried out again. Is your statement...
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...
1000 kg/h of a hydrocarbon mixture containing 25% xylene by mass is fed to an extraction...
1000 kg/h of a hydrocarbon mixture containing 25% xylene by mass is fed to an extraction unit which partially removes the xylene by contacting the hydrocarbon stream with 2000 kg/h of an immiscible solvent initially containing 0.5% xylene by mass. The raffinate stream will contain 2% xylene by mass. Calculate the mass flowrates of the extract and raffinate streams and the composition of the extract.
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...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT