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Macmillan Learning A distillation column, as shown in the figure, is a device used to separate components with different volatilities. In a specific process, a distillation column is used to separate a feed stream containing 0.4500 mol ethanol/mol and 0.5500 mol water/mol into two product streams: an overhead stream that is ethanol-rich and a bottoms stream that is water-rich. Vapor containing 0.7910 mol ethanol/mol and 0.2090 mol water/mol leaves the top of the distillation column and enters a condenser, where the stream condenses completely into a liquid. This stream is then split; the reflux returns to the column, and the overhead product leaves the process. The ratio of the flow rates of reflux to overhead product is given by the reflux ratio R= AM flow rate of reflux flow rate of overhead product = YE/XE yw/xw YE/XE (1-YE)/(1-XE) Feed YE/(1-YE) XE/(1 − XE) Distillation column Reflux Boilup and for this particular process, R = 1.69. Liquid leaving the bottom of the distillation column enters a reboiler, where a fraction of the stream is vaporized and returns to the distillation column as boilup, while the liquid fraction leaves the process as bottoms product. The composition of the boilup and the bottoms-product streams are governed by the relative volatility, a, of ethanol and water. Condenser Overhead product Reboiler Bottoms product where yg is the mole fraction of ethanol in the vapor stream, yw is the mole fraction of water in the vapor stream, xg is the mole fraction of ethanol in the liquid stream, and xw is the mole fraction of water in the liquid stream. For this particular process a = 6.286, and the ratio of ethanol leaving the reboiler in the boilup to ethanol leaving the reboiler in the bottoms product is 1880 mol of overhead product is produced. Given this basis, answer the questions. 86°F Mostly sunny

Macmillan Learning A distillation column, as shown in the figure, is a device used to separate components with different volatilities. In a specific process, a distillation column is used to separate a feed stream containing 0.4500 mol ethanol/mol and 0.5500 mol water/mol into two product streams: an overhead stream that is ethanol-rich and a bottoms stream that is water-rich. Vapor containing 0.7910 mol ethanol/mol and 0.2090 mol water/mol leaves the top of the distillation column and enters a condenser, where the stream condenses completely into a liquid. This stream is then split; the reflux returns to the column, and the overhead product leaves the process. The ratio of the flow rates of reflux to overhead product is given by the reflux ratio R= AM flow rate of reflux flow rate of overhead product = YE/XE yw/xw YE/XE (1-YE)/(1-XE) Feed YE/(1-YE) XE/(1 − XE) Distillation column Reflux Boilup and for this particular process, R = 1.69. Liquid leaving the bottom of the distillation column enters a reboiler, where a fraction of the stream is vaporized and returns to the distillation column as boilup, while the liquid fraction leaves the process as bottoms product. The composition of the boilup and the bottoms-product streams are governed by the relative volatility, a, of ethanol and water. Condenser Overhead product Reboiler Bottoms product where yg is the mole fraction of ethanol in the vapor stream, yw is the mole fraction of water in the vapor stream, xg is the mole fraction of ethanol in the liquid stream, and xw is the mole fraction of water in the liquid stream. For this particular process a = 6.286, and the ratio of ethanol leaving the reboiler in the boilup to ethanol leaving the reboiler in the bottoms product is 1880 mol of overhead product is produced. Given this basis, answer the questions. 86°F Mostly sunny

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Macmillan Learning spaces. Variable names are given for reference later. x₁ = (1-x) = 6.286 0.5500 Feed 0.2090 Answer Bank unknown 0.720 0.4500 100 mol mol E/mol mol W/mol 1.69 0.7910 48.89 n₂ = y₂ = (1-y₂2)= Distillation column n₁ = x₂ = (1-x) = Reflux n = x₂ = (1-x) = Boilup n₂ = y₂ = (1-y₂)= Given the basis, what is no, the moles of bottoms product? mol mol E/mol mol W/mol mol mol E/mol mol W/mol mol mol E/mol mol W/mol mol mol E/mol Emol W/mol Condenser Overhead product mol mol E/mol mol W/mol Reboiler n = (1-x₂)= Bottoms product n = x = (1-x) = A mol mol E/mol mol W/mol
Transcribed Image Text:Macmillan Learning spaces. Variable names are given for reference later. x₁ = (1-x) = 6.286 0.5500 Feed 0.2090 Answer Bank unknown 0.720 0.4500 100 mol mol E/mol mol W/mol 1.69 0.7910 48.89 n₂ = y₂ = (1-y₂2)= Distillation column n₁ = x₂ = (1-x) = Reflux n = x₂ = (1-x) = Boilup n₂ = y₂ = (1-y₂)= Given the basis, what is no, the moles of bottoms product? mol mol E/mol mol W/mol mol mol E/mol mol W/mol mol mol E/mol mol W/mol mol mol E/mol Emol W/mol Condenser Overhead product mol mol E/mol mol W/mol Reboiler n = (1-x₂)= Bottoms product n = x = (1-x) = A mol mol E/mol mol W/mol
ment Score: n 1 of 3 0% Macmillan Learning R= A distillation column, as shown in the figure, is a device used to separate components with different volatilities. In a specific process, a distillation column is used to separate a feed stream containing 0.4500 mol ethanol/mol and 0.5500 mol water/mol into two product streams: an overhead stream that is ethanol-rich and a bottoms stream that is water-rich. Vapor containing 0.7910 mol ethanol/mol and 0.2090 mol water/mol leaves the top of the distillation column and enters a condenser, where the stream condenses completely into a liquid. This stream is then split; the reflux returns to the column, and the overhead product leaves the process. The ratio of the flow rates of reflux to overhead product is given by the reflux ratio flow rate of reflux flow rate of overhead product α= YE/XE yw/xw Resources Ex Give Up! YE/XE (1 - YE)/(1-XE) YE/ (1 - YE) XE/(1 − XE) Feed Distillation column Reflux Hint Boilup Condenser and for this particular process, R = 1.69. Liquid leaving the bottom of the distillation column enters a reboiler, where a fraction of the stream is vaporized and returns to the distillation column as boilup, while the liquid fraction leaves the process as bottoms product. The composition of the boilup and the bottoms-product streams are governed by the relative volatility, a, of ethanol and water. Overhead product Reboiler Bottoms product Check Answer where YE is the mole fraction of ethanol in the vapor stream, yw is the mole fraction of water in the vapor stream, xg is the mole fraction of ethanol in the liquid stream, and xw is the mole fraction of water in the liquid stream. For this particular process a = 6.286, and the ratio of ethanol leaving the reboiler in the boilup to ethanol leaving the reboiler in the bottoms product is 86°F Mostly sunny 700 Fior a basis of 100 mol of feed. 48.89 mol of overhead product is produced. Given this basis, answer the questions.
Transcribed Image Text:ment Score: n 1 of 3 0% Macmillan Learning R= A distillation column, as shown in the figure, is a device used to separate components with different volatilities. In a specific process, a distillation column is used to separate a feed stream containing 0.4500 mol ethanol/mol and 0.5500 mol water/mol into two product streams: an overhead stream that is ethanol-rich and a bottoms stream that is water-rich. Vapor containing 0.7910 mol ethanol/mol and 0.2090 mol water/mol leaves the top of the distillation column and enters a condenser, where the stream condenses completely into a liquid. This stream is then split; the reflux returns to the column, and the overhead product leaves the process. The ratio of the flow rates of reflux to overhead product is given by the reflux ratio flow rate of reflux flow rate of overhead product α= YE/XE yw/xw Resources Ex Give Up! YE/XE (1 - YE)/(1-XE) YE/ (1 - YE) XE/(1 − XE) Feed Distillation column Reflux Hint Boilup Condenser and for this particular process, R = 1.69. Liquid leaving the bottom of the distillation column enters a reboiler, where a fraction of the stream is vaporized and returns to the distillation column as boilup, while the liquid fraction leaves the process as bottoms product. The composition of the boilup and the bottoms-product streams are governed by the relative volatility, a, of ethanol and water. Overhead product Reboiler Bottoms product Check Answer where YE is the mole fraction of ethanol in the vapor stream, yw is the mole fraction of water in the vapor stream, xg is the mole fraction of ethanol in the liquid stream, and xw is the mole fraction of water in the liquid stream. For this particular process a = 6.286, and the ratio of ethanol leaving the reboiler in the boilup to ethanol leaving the reboiler in the bottoms product is 86°F Mostly sunny 700 Fior a basis of 100 mol of feed. 48.89 mol of overhead product is produced. Given this basis, answer the questions.
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