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3(65) A stream enters distillation tower #1 containing methanol (M), ethanol (E), and water (W), with...


3(65) A stream enters distillation tower #1 containing methanol (M), ethanol (E), and water (W), with composition as shown on next page. A vapor stream leaves tower #1, with total flow rate of 100 mols, containing 90 mol% M and 10 mol% E. No water leaves in this vapor stream. The liquid stream leaving tower #1 contains only ethanol and water (no methanol), and is fed to tower #2, 90% of the water in the feed to tower #2 leaves the tower in the liquid stream. This liquid stream has a composition of 5 mol% ethanol, 95 mol% water. The vapor stream leaving tower #2 also contains E and W (10 points) Completely label the diagram; assign variable names (with units) as needed. (5 points) Perform a degree of freedom for tower #1 Number of unknowns: names: Number of equations names. Degree of freedom (5 points) Perform a degree of freedom for the overall process. Number of unknowns: ames: Number of equations: names: Degree of freedom- (45 points) Calculate the total flow rate and compositions of each stream. Show composition in mole %. Show your work on the next page, write answers here Feed stream entering tower #1, flow rate mol/min mol/s; Liquid stream leaving tower #1, flow rate composition: mol% E. mol% W mol/min; vapor stream leaving tower #2, flow rate composition: -mol% E, -mol% W - Liquid stream leaving tower #2, flow rate
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3(65) A stream enters distillation tower #1 containing methanol (M), ethanol (E), and water (W), with composition as shown on next page. A vapor stream leaves tower #1, with total flow rate of 100 mols, containing 90 mol% M and 10 mol% E. No water leaves in this vapor stream. The liquid stream leaving tower #1 contains only ethanol and water (no methanol), and is fed to tower #2, 90% of the water in the feed to tower #2 leaves the tower in the liquid stream. This liquid stream has a composition of 5 mol% ethanol, 95 mol% water. The vapor stream leaving tower #2 also contains E and W (10 points) Completely label the diagram; assign variable names (with units) as needed. (5 points) Perform a degree of freedom for tower #1 Number of unknowns: names: Number of equations names. Degree of freedom (5 points) Perform a degree of freedom for the overall process. Number of unknowns: ames: Number of equations: names: Degree of freedom- (45 points) Calculate the total flow rate and compositions of each stream. Show composition in mole %. Show your work on the next page, write answers here Feed stream entering tower #1, flow rate mol/min mol/s; Liquid stream leaving tower #1, flow rate composition: mol% E. mol% W mol/min; vapor stream leaving tower #2, flow rate composition: -mol% E, -mol% W - Liquid stream leaving tower #2, flow rate
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