A new asymmetric, polyimide polymer membrane has been developed for the separation of N2 from CH4. At 30oC, permeance values are 50,000 and 10,000 barrer/cm for N2 and CH4, respectively.If this new membrane is used to perform the separation in Figure,determine the membrane surface area in m2, and the kmol/h of CH4 in the permeate. Base the driving force for diffusion on the arithmetic average of the partial pressures of the entering feed and the exiting retentate, with the permeate-side partial pressures at the exit condition. Feed5,500 kPa30°CRetentate5,450 kPa30°CMembranekmol/hseparatorkmol/hN2CH4200N2CH4208001,000Permeate100 kPa30°Ckmol/hN2CH4180

a) Given : For N2 Permeance , A2N2=50,000barrerscm 1barrercm=1.205x10-10Kmolm2-hr-kPa…

Answered: Feed 5,500 kPa 30°C Retentate 5,450 kPa…

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 new asymmetric, polyimide polymer membrane has been developed for the separation of N₂ from CH₄. At 30^oC, permeance values are 50,000 and 10,000 barrer/cm for N₂ and CH₄, respectively.If this new membrane is used to perform the separation in Figure,determine the membrane surface area in m², and the kmol/h of CH₄ in the permeate. Base the driving force for diffusion on the arithmetic average of the partial pressures of the entering feed and the exiting retentate, with the permeate-side partial pressures at the exit condition.

Feed
5,500 kPa
30°C
Retentate
5,450 kPa
30°C
Membrane
kmol/h
separator
kmol/h
N2
CH4
200
N2
CH4
20
800
1,000
Permeate
100 kPa
30°C
kmol/h
N2
CH4
180

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