A liquid mixture of n-hexane and n-heptane is to be flashed. How much energy per second...
A liquid mixture of n-hexane and n-heptane is to be flashed. How much energy per second is required to heat 1 mol/s of a mixture of 75 mol% n-hexane and 25 mol% n-heptane from 25ºC to 75ºC at 1 atm pressure (with vapor and liquid product streams leaving at 75ºC at equilibrium)? Also find the vapor and liquid product flowrates and compositions.
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A liquid mixture of n-hexane and n-heptane is to be flashed. How
much energy per second...
A mixture containing 240 kg ethanol and 301.6 Kg acetone is flashed at 1 atm. The...
A mixture containing 240 kg ethanol and 301.6 Kg acetone is flashed at 1 atm. The feed rate is 541.6 kg/hr. a. Calculate the fractional vaporization required to obtain 66 mole % of ethanol in the liquid product stream leaving the bottom of the flash tank. b. Find the operating temperature which will achieve this separation. C. What are the compositions (mole %) in the product streams? d. Calculate the L/min of acetone in the vapor stream leaving the top...
CONFIDENTIAL BKC/1617/BKF2343 QUESTION 1 An equimolar vapor mixture of n-pentane and n-hexane at 110°C and 1 atm is fed into a condenser at a rate of 200 L min When the feed is cooled and compress...
CONFIDENTIAL BKC/1617/BKF2343 QUESTION 1 An equimolar vapor mixture of n-pentane and n-hexane at 110°C and 1 atm is fed into a condenser at a rate of 200 L min When the feed is cooled and compressed in the condenser, some of the vapor is condensed. The products are separated and discharged in separate streams. The vapor and liquid products at the top and the bottom of the condenser are(in equilibrium at 60°C and pressure P mmHg. The vapor product stream...
A mixture of 100 mol containing 60 mol% n-pentane and 40 mol% n-heptane is vaporized at...
A mixture of 100 mol containing 60 mol% n-pentane and 40 mol% n-heptane is vaporized at 101.325 kPa abs pressure until 40 mol of vapor and 60 mol of liquid in equilibrium with each other are produced. This occurs in a single-stage system and the vapor and liquid are kept in contact with each other until the vaporization is complete. Calculate the composition of the vapor and liquid. The equilibrium data are as follows, where x and y aremole fractions...
A binary mixture of benzene(1) and toluene(2) is flashed to 75kPa and 90°C. Analysis of the effluent liquid and vapor streams from the separator yields: x1 = 0.1604 and y1 = 0.2919. An operator remark...
A binary mixture of benzene(1) and toluene(2) is flashed to 75kPa and 90°C. Analysis of the effluent liquid and vapor streams from the separator yields: x1 = 0.1604 and y1 = 0.2919. An operator remarks that the product streams are “off-spec” and hence might affect the final application of the binary mixture. You are asked to diagnose the problem. a) Verify that the exiting streams are not in binary equilibrium b) Verify that an air leak into the separator could...
Hand Calculations (40 %)-(must not exceed 2 pages) The process involves the separation of a binary mixture containing heptane and ethylbenzene using a countercurrently operated continuous fractio...
Hand Calculations (40 %)-(must not exceed 2 pages) The process involves the separation of a binary mixture containing heptane and ethylbenzene using a countercurrently operated continuous fractionation unit. A feed at a flowrate of 252 mol/h containing 43 wt% heptane and 57 wt% ethyl benzene is to be fractionated at 1 bar to give a distillate with 95 mol% heptane and a bottom product with 95 m0196 ethyl benzene. The reflux ratio will be 70% more than the minimum. The...
Flashing a hydrocarbon mixture An equimolar mixture of propane, n-butane, i-butene and pentane is flashed at...
Flashing a hydrocarbon mixture An equimolar mixture of propane, n-butane, i-butene and pentane is flashed at a total pressure of 4 bar so that the ratio of the molar vapor phase flow rate and molar liquid phase flow rate is 1: nv RL Retrieve the physical properties needed from reliable sources and write a Mat- lab or Mathematica or Excel script that calculates the temperature at which the mixture has to be flashed.
4.42. An equimolar liquid mixture of benzene and toluene is separated into two product streams by...
4.42. An equimolar liquid mixture of benzene and toluene is separated into two product streams by distillation. A process flowchart and a somewhat oversimplified description of what happens in the process follow: Vapor-97% mole benzene Overhead product Reflux n(mol) n1(mol) CONDENSER Feed 100 mol DISTILLATION COLUMN 0.500 mol B/mol 0.500 mol T/mol Boilup yBmol B(v)/mol] Bottoms product REBOILER *B[mol B(1)/mol] Inside the column a liquid stream flows downward and a vapor stream rises. At each point in the column some...
N-Heptane / Cycloheptane Separation. A saturated liquid feed of 600 mol/hr containing 54 mole % n-heptane...
N-Heptane / Cycloheptane Separation. A saturated liquid feed of 600 mol/hr containing 54 mole % n-heptane is to be fractionated at 101.325kPa (abs) in order to form a distillate containing 94 mole % n-heptane and a bottoms product of 10 mole % cycloheptane. Assume Raoult’s Law behavior applies (calculated results provided). The distillate reflux ratio to be used is 8:1. a) Calculate the flowrates (mol/hr) of the distillate and bottoms. b) Determine the minimum reflux ratio, RMIN and the minimum...
An equimolar liquid mixture of benzene and toluene is separated into two product streams by distillation....
An equimolar liquid mixture of benzene and toluene is separated into two product streams by distillation. A process flowchart and a somewhat oversimplified description of what happens in the process follow: Vapor-97% mole benzene A Reflux Overhead product Filmoi) 24 CONDENSER", mot Feed 100 mol 0.500 mol Bimal La DISTILLATION 0.500 mol/mol Bollup mol B[/mol) 1 Bottoms product REBOILER mol B/D/mol Inside the column a liquid stream flows downward and a vapor stream rises. At each point in the column...
2. (no calculations required) A mixture of n-butanol and water is being separated using two distillation...
2. (no calculations required) A mixture of n-butanol and water is being separated using two distillation columns coupled together by a liquid-liquid separator. Both columns have 30 trays and operate at 1 atm with the internal reflux ratio adjusted to four times the minimum Vapor-liquid- liquid equilibrium data for this system at 1 atm is provided below in the form of a T-x-y diagram. If the feed to the distillation towers is a saturated liquid that contains 65 mol% water,...
A mixture containing 240 kg ethanol and 301.6 Kg acetone is flashed at 1 atm. The feed rate is 541.6 kg/hr. a. Calculate the fractional vaporization required to obtain 66 mole % of ethanol in the liquid product stream leaving the bottom of the flash tank. b. Find the operating temperature which will achieve this separation. C. What are the compositions (mole %) in the product streams? d. Calculate the L/min of acetone in the vapor stream leaving the top...
CONFIDENTIAL BKC/1617/BKF2343 QUESTION 1 An equimolar vapor mixture of n-pentane and n-hexane at 110°C and 1 atm is fed into a condenser at a rate of 200 L min When the feed is cooled and compressed in the condenser, some of the vapor is condensed. The products are separated and discharged in separate streams. The vapor and liquid products at the top and the bottom of the condenser are(in equilibrium at 60°C and pressure P mmHg. The vapor product stream...
Hand Calculations (40 %)-(must not exceed 2 pages) The process involves the separation of a binary mixture containing heptane and ethylbenzene using a countercurrently operated continuous fractionation unit. A feed at a flowrate of 252 mol/h containing 43 wt% heptane and 57 wt% ethyl benzene is to be fractionated at 1 bar to give a distillate with 95 mol% heptane and a bottom product with 95 m0196 ethyl benzene. The reflux ratio will be 70% more than the minimum. The...
Flashing a hydrocarbon mixture An equimolar mixture of propane, n-butane, i-butene and pentane is flashed at a total pressure of 4 bar so that the ratio of the molar vapor phase flow rate and molar liquid phase flow rate is 1: nv RL Retrieve the physical properties needed from reliable sources and write a Mat- lab or Mathematica or Excel script that calculates the temperature at which the mixture has to be flashed.
4.42. An equimolar liquid mixture of benzene and toluene is separated into two product streams by distillation. A process flowchart and a somewhat oversimplified description of what happens in the process follow: Vapor-97% mole benzene Overhead product Reflux n(mol) n1(mol) CONDENSER Feed 100 mol DISTILLATION COLUMN 0.500 mol B/mol 0.500 mol T/mol Boilup yBmol B(v)/mol] Bottoms product REBOILER *B[mol B(1)/mol] Inside the column a liquid stream flows downward and a vapor stream rises. At each point in the column some...
An equimolar liquid mixture of benzene and toluene is separated into two product streams by distillation. A process flowchart and a somewhat oversimplified description of what happens in the process follow: Vapor-97% mole benzene A Reflux Overhead product Filmoi) 24 CONDENSER", mot Feed 100 mol 0.500 mol Bimal La DISTILLATION 0.500 mol/mol Bollup mol B[/mol) 1 Bottoms product REBOILER mol B/D/mol Inside the column a liquid stream flows downward and a vapor stream rises. At each point in the column...
2. (no calculations required) A mixture of n-butanol and water is being separated using two distillation columns coupled together by a liquid-liquid separator. Both columns have 30 trays and operate at 1 atm with the internal reflux ratio adjusted to four times the minimum Vapor-liquid- liquid equilibrium data for this system at 1 atm is provided below in the form of a T-x-y diagram. If the feed to the distillation towers is a saturated liquid that contains 65 mol% water,...
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