A gas mixture at 300K and 1 bar analyzing by volume 20% N2 and 80% CH4 is subjected to liquefaction at the rate of 1500 kg/hr. It is found that only 30% (weight) of the entering gas is liquefied and the concentration of N2 in the liquid is 60% by weight. The unliquefied gas leaves the unit at 273K and 1 bar. Show the process flow diagram and determine (a) the volume of the unliquefied gas, m3 /hr (b) the composition of the gas leaving expressed as volume %.

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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 gas mixture at 300K and 1 bar analyzing by volume 20% N₂ and 80% CH₄ is subjected to liquefaction at the rate of 1500 kg/hr. It is found that only 30% (weight) of the entering gas is liquefied and the concentration of N₂ in the liquid is 60% by weight. The unliquefied gas leaves the unit at 273K and 1 bar. Show the process flow diagram and determine (a) the volume of the unliquefied gas, m³ /hr (b) the composition of the gas leaving expressed as volume %.

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