height of the bed.
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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Transcribed Image Text:a) Deleye and Froment (1986) have reported the data on absorption of CO2 in
aqueous solution of monoethanol amine (MEA) in a packed bed absorber. Gas
containing CO2 at a partial pressure of 2 atm is to be purified by absorption into
an aqueous solution of MEA in a packed bed filled with 5 cm diameter steel pal
rings. Assuming excess concentration of MEA in a solution, the reaction between
CO2 and MEA is treated as pseudo-first order reaction with rate constant k = 7.194
x 104 s1. A quantity of 6500 m/h of gas is treated with 1000 m3/h of MEA solution.
Partial pressure of CO2 is to be reduced to 0.02 bar. Column diameter is 2 m and
it is operating at a pressure of 14.3 bar and a temperature of 315 K. Calculate the
height of the bed. The following data are reported.
kG = 2.639 x 10º kmol/m²sPa
KAL = 3.889 x 104 m/s
%3D
DAL = 2.39 x 10º m²/s
ɛ = bed porosity = 0.45
Sp = specific surface area = 105 m²/m³
HA = Henry's law constant t = 4.89 x 106 m³ Pa/kmol
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