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A compressed liquid feed stream containing an equimolar mixture of n-pentane and n-hexane flows into a flash unit at flow rate F. At steady state, 33.3% of the feed stream is vaporized and leaves the drum as a vapor stream with flow rate V. The rest leaves as liquid with flow rate L. If the flash temperature is 20°C, what is the pressure required? What are the composition of the liquid and vapor exit streams? Vapor pressures of n-pentane and n-hexane at 20°C are 0.56 bar and 0.16 bar, respectively.

A compressed liquid feed stream containing an equimolar mixture of n-pentane and n-hexane flows into a flash unit at flow rate F. At steady state, 33.3% of the feed stream is vaporized and leaves the drum as a vapor stream with flow rate V. The rest leaves as liquid with flow rate L. If the flash temperature is 20°C, what is the pressure required? What are the composition of the liquid and vapor exit streams? Vapor pressures of n-pentane and n-hexane at 20°C are 0.56 bar and 0.16 bar, respectively.

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 compressed liquid feed stream containing an equimolar mixture of n-pentane and n-hexane flows into a flash unit at flow rate F. At steady state, 33.3% of the feed stream is vaporized and leaves the drum as a vapor stream with flow rate V. The rest leaves as liquid with flow rate L. If the flash temperature is 20°C, what is the pressure required? What are the composition of the liquid and vapor exit streams? Vapor pressures of n-pentane and n-hexane at 20°C are 0.56 bar and 0.16 bar, respectively.
Transcribed Image Text:A compressed liquid feed stream containing an equimolar mixture of n-pentane and n-hexane flows into a flash unit at flow rate F. At steady state, 33.3% of the feed stream is vaporized and leaves the drum as a vapor stream with flow rate V. The rest leaves as liquid with flow rate L. If the flash temperature is 20°C, what is the pressure required? What are the composition of the liquid and vapor exit streams? Vapor pressures of n-pentane and n-hexane at 20°C are 0.56 bar and 0.16 bar, respectively.
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