Answered: Vapor Liquid Downflow area, A4 (from…

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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The following results were obtained for Tray n from a rate-basedcalculation of a ternary distillation at 14.7 psia, involving acetone (1), methanol (2), and water (3) in a 5.5-ft-diameter column using sieve trays with a 2-inch-high weir. Vapor and liquid phases are assumed to be completely mixed.The computed products of the gas-phase, binary mass-transfer coefficients
and interfacial area, using the Chan–Fair correlation of §6.6,are as follows in lbmol/:
k₁₂ =k₂₁=1, 955; k₁₃ =k₃₁ =2,407; k₂₃=k₃₂ = 2,797
(a) Compute the molar diffusion rates. (b) Compute the masstransfer
rates. (c) Calculate the Murphree vapor-tray efficiencies.

Vapor
Liquid
Downflow
area, A4
(from tray
above)
Downflow
area, A
(to tray
below)
Active
area, A.
Total area, A= A, + 244

Ул
K,
2.759
1.225
Component
0.2971
0.4631
0.3521
0.1700
0.1459
0.4677
0.1802
1.0000
0.4290
0.3865
0.2398
1.0000
0.4010
1.0000
0.3673
04676
1.0000

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