A mixture containing 45% benzene (B) and 55% toluene (T) by mass is fed to a...
A mixture containing 45% benzene (B) and 55% toluene (T) by mass is fed to a distillation column an overhead stream of 95% B is produced, and 8% of the benzene fed to the column leaves in the bottom stream. The feed rate is 2000kg/h. 1- suggest the suitable material to fabricate the distillation column. 2-Ideentify the corrosive behavior of chemicals to the selected material and calculate the corrosive allowance for thickness of the column. 3-Explain the suitable maintenance procedure involved in distillation column.
Homework Answers
Ans 1 . The suitable material to fabricate the distillation column is assymetric polyvinylidene fluoride (PVDF) hollow fibre membrane.
Ans2.PVDFmembrane has been prepared by in situ grafting of spinning solution and provides higher water flux which helps in the distillation process.It has a small tensile strength.
Ans 3. The maintenance procedure involved in distillation column is as follows:-
After the distillation process of benzene- toluene is acheived upto 99% under a optimal operating condition . The distillation should be carried under reduced pressure because both benzene and toluene has a vapour pressure equal to its atmospheric pressure so the liquid will have a very high temperature and we shouldnot heat the distillating column to dryness.
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A mixture containing 45% benzene (B) and 55% toluene (T) by mass
is fed to a...
A liquid mixture containing 45.0 % benzene (B) and 55.0 % toluene (T) by mass is...
A liquid mixture containing 45.0 % benzene (B) and 55.0 % toluene (T) by mass is fed to a distillation column. A product stream leaving the top of the column (the overhead product) contains 95.0 mole % B, and a bottom product stream contains 8.0 % of the benzene fed to the column (meaning that 92% of the benzene leaves with the overhead product). the volumetric flow rate of the feed stream is 2000 L/h and the specific gravity of...
A mixture containing 42% benzene and 58% toluene by mass is fed to a distillation column....
A mixture containing 42% benzene and 58% toluene by mass is fed to a distillation column. A second mixture is also fed to the distillation column and has a composition of 65% toluene and 35% acetone by mass. The flowrates of the mixtures are 2500 kg h1 and 1500 kg h1 respectively. An overhead distillate exit stream of 800 kg h-1 containing 23% acetone and a bottom exit stream of 25% benzene are produced. Determine the bottom exit flowrate and...
A distillation column is fed with a liquid mixture of 25.0 mole % benzene, 30 %...
A
distillation column is fed with a liquid mixture of 25.0 mole %
benzene, 30 % toluene and 45 % xylene. The bottom product from the
distillation column contains 97 mole % xylene and no benzene. The
other stream (upper one) contains 29 % benzene and it is fed to a
second distillation column. The upper...
Problem 2. A distillation column is fed with a liquid mixture of 25.0 mole benzene, 30 toluene, and 45 xylene. The bottom product from...
Problem 4.40 Sequential Distillation A liquid mixture containing 30.0 mole% benzene (B), 25.0% toluene (T), and...
Problem 4.40 Sequential Distillation A liquid mixture containing 30.0 mole% benzene (B), 25.0% toluene (T), and the balance xylene (X) is fed to a distillation column. The bottoms product contains 98.0 mole% X and no B, and 85.5% of the X in the feed is recovered in this stream. The overhead product is fed to a second column. The overhead product from the second column contains 91.0% of the B in the feed to this column. The composition of this...
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...
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...
Question 2 A feed material stream flowing at a rate of 100 kg/h is fed to...
Question 2 A feed material stream flowing at a rate of 100 kg/h is fed to a distillation column. The feed contains 45 wt.% benzene (C6H6) and the remainder toluene (C6H5CH3). The distillate stream contains 98 wt.% benzene. The bottom stream contains 10 wt.% of the benzene fed to the distillation column. a) Draw a block flow diagram of the process and annotate appropriately with the data provided, state the basis and define variables for unknown flow rates and compositions....
Problem One [35 marks] A liquid mixture of benzene and toluene contains 55% benzene by mass,...
Problem One [35 marks] A liquid mixture of benzene and toluene contains 55% benzene by mass, the rest is toluene is to be distilled continuously to produce two streams: the Overhead stream (v) in kg/hr and bottom stream (L.) in kg/hr. The overhead stream was analysed and was found to have 85% by mass benzene and the rest is toluene. The bottom stream was analysed and found to have 89.4% toluene and the rest is benzene. 1) Draw a flowchart...
100 moles of benzene (A) and toluene (B) mixture containing 50 mol% of benzene is subjected...
100 moles of benzene (A) and toluene (B) mixture containing 50 mol% of benzene is subjected to a differential distillation at atmospheric pressure till the composition of the benzene in the residue is 33 mol% Calculate the total moles of the mixture distilled. Assume a relative volatility of 2.25
HW3 Differential Distillation of Benzene-Toluene. A mixture containing 70 mol % benzene and 30 mol %...
HW3 Differential Distillation of Benzene-Toluene. A mixture containing 70 mol % benzene and 30 mol % toluene is distilled under differential conditions at 101.32 kPa (1 atm). A total of one third of the moles in the feed is vaporized. Calculate the average composition of the distillate and the composition of the remaining liquid. Use equilibrium data in Table 11.1-1. given as mole fraction n-heptane. 0.284 0.097 0.067 0.459 0.184 0.131 0.039 0.012 0.078 0.025
A mixture containing 42% benzene and 58% toluene by mass is fed to a distillation column. A second mixture is also fed to the distillation column and has a composition of 65% toluene and 35% acetone by mass. The flowrates of the mixtures are 2500 kg h1 and 1500 kg h1 respectively. An overhead distillate exit stream of 800 kg h-1 containing 23% acetone and a bottom exit stream of 25% benzene are produced. Determine the bottom exit flowrate and...
A
distillation column is fed with a liquid mixture of 25.0 mole %
benzene, 30 % toluene and 45 % xylene. The bottom product from the
distillation column contains 97 mole % xylene and no benzene. The
other stream (upper one) contains 29 % benzene and it is fed to a
second distillation column. The upper...
Problem 2. A distillation column is fed with a liquid mixture of 25.0 mole benzene, 30 toluene, and 45 xylene. The bottom product from...
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...
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...
Question 2 A feed material stream flowing at a rate of 100 kg/h is fed to a distillation column. The feed contains 45 wt.% benzene (C6H6) and the remainder toluene (C6H5CH3). The distillate stream contains 98 wt.% benzene. The bottom stream contains 10 wt.% of the benzene fed to the distillation column. a) Draw a block flow diagram of the process and annotate appropriately with the data provided, state the basis and define variables for unknown flow rates and compositions....
Problem One [35 marks] A liquid mixture of benzene and toluene contains 55% benzene by mass, the rest is toluene is to be distilled continuously to produce two streams: the Overhead stream (v) in kg/hr and bottom stream (L.) in kg/hr. The overhead stream was analysed and was found to have 85% by mass benzene and the rest is toluene. The bottom stream was analysed and found to have 89.4% toluene and the rest is benzene. 1) Draw a flowchart...
100 moles of benzene (A) and toluene (B) mixture containing 50 mol% of benzene is subjected to a differential distillation at atmospheric pressure till the composition of the benzene in the residue is 33 mol% Calculate the total moles of the mixture distilled. Assume a relative volatility of 2.25
HW3 Differential Distillation of Benzene-Toluene. A mixture containing 70 mol % benzene and 30 mol % toluene is distilled under differential conditions at 101.32 kPa (1 atm). A total of one third of the moles in the feed is vaporized. Calculate the average composition of the distillate and the composition of the remaining liquid. Use equilibrium data in Table 11.1-1. given as mole fraction n-heptane. 0.284 0.097 0.067 0.459 0.184 0.131 0.039 0.012 0.078 0.025
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