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A continuous fractionating column is required to separate a mixture containing 0.40 mol fraction n-heptane (MW= 100) and 0.60 mol fraction n-octane (MW = 114) into overhead products of 99 mol% heptane and bottom products of 1 mol% heptane. The column is to operate at a pressure (at top) of 101.3 kN/m² with a pressure drop across the tower of 25 kPa. The feed is a saturated mixture with 30% vapor, and is supplied to the column at 0.070 kmol/s. The reflux ratio (L/D) is 2.5 and the fraction of the cross-sectional area available for vapor flow is 0.88. If the vapor velocity is 0.8 m/s, determine the required diameter on stripping section based on the conditions at the bottom of the tower, where you can use pure n-octane for the evaluation of vapor density. Vapor pressure for n-octane In P*(kPa) = 14.2368 - 3304.16/(T(K) - 55.2278) Gas constant R = 8314 J/kmol K. Hint: First find the pressure at the bottom of the column, then determine the temperature using the vapor pressure equation

A continuous fractionating column is required to separate a mixture containing 0.40 mol fraction n-heptane (MW= 100) and 0.60 mol fraction n-octane (MW = 114) into overhead products of 99 mol% heptane and bottom products of 1 mol% heptane. The column is to operate at a pressure (at top) of 101.3 kN/m² with a pressure drop across the tower of 25 kPa. The feed is a saturated mixture with 30% vapor, and is supplied to the column at 0.070 kmol/s. The reflux ratio (L/D) is 2.5 and the fraction of the cross-sectional area available for vapor flow is 0.88. If the vapor velocity is 0.8 m/s, determine the required diameter on stripping section based on the conditions at the bottom of the tower, where you can use pure n-octane for the evaluation of vapor density. Vapor pressure for n-octane In P*(kPa) = 14.2368 - 3304.16/(T(K) - 55.2278) Gas constant R = 8314 J/kmol K. Hint: First find the pressure at the bottom of the column, then determine the temperature using the vapor pressure equation

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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A continuous fractionating column is required to separate a mixture containing 0.40 mol fraction n-heptane (MW= 100) and 0.60 mol fraction n-octane (MW = 114) into overhead products of 99 mol% heptane and bottom products of 1 mol% heptane. The column is to operate at a pressure (at top) of 101.3 kN/m² with a pressure drop across the tower of 25 kPa. The feed is a saturated mixture with 30% vapor, and is supplied to the column at 0.070 kmol/s. The reflux ratio (L/D) is 2.5 and the fraction of the cross-sectional area available for vapor flow is 0.88. If the vapor velocity is 0.8 m/s, determine the required diameter on stripping section based on the conditions at the bottom of the tower, where you can use pure n-octane for the evaluation of vapor density. Vapor pressure for n-octane In P*(kPa) = 14.2368 - 3304.16/(T(K) - 55.2278) Gas constant R = 8314 J/kmol K. Hint: First find the pressure at the bottom of the column, then determine the temperature using the vapor pressure equation.
Transcribed Image Text:A continuous fractionating column is required to separate a mixture containing 0.40 mol fraction n-heptane (MW= 100) and 0.60 mol fraction n-octane (MW = 114) into overhead products of 99 mol% heptane and bottom products of 1 mol% heptane. The column is to operate at a pressure (at top) of 101.3 kN/m² with a pressure drop across the tower of 25 kPa. The feed is a saturated mixture with 30% vapor, and is supplied to the column at 0.070 kmol/s. The reflux ratio (L/D) is 2.5 and the fraction of the cross-sectional area available for vapor flow is 0.88. If the vapor velocity is 0.8 m/s, determine the required diameter on stripping section based on the conditions at the bottom of the tower, where you can use pure n-octane for the evaluation of vapor density. Vapor pressure for n-octane In P*(kPa) = 14.2368 - 3304.16/(T(K) - 55.2278) Gas constant R = 8314 J/kmol K. Hint: First find the pressure at the bottom of the column, then determine the temperature using the vapor pressure equation.
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