A spherical catalyst of radius d₂ = 15 mm is used in a packed bed reactor. The fluid containing Cab = 1.25 of the reactant A, flows past the catalyst at a free - stream L velocity of u = 0.75m. Fluid properties are given: diffusivity DAB = 2.5× 10-117 and the momentum diffusivity v = 1.0 × 10-6 m² If the reaction is external mass transfer limiting and proceeds instantaneously, calculate the mass flux of A at the boundary. • If the reaction has the following rate law: -TAS = K+CAs and if k = 3.0 × 10-6 m³ 0-6 m², what will be the mass flux of A at the boundary?
A spherical catalyst of radius d₂ = 15 mm is used in a packed bed reactor. The fluid containing Cab = 1.25 of the reactant A, flows past the catalyst at a free - stream L velocity of u = 0.75m. Fluid properties are given: diffusivity DAB = 2.5× 10-117 and the momentum diffusivity v = 1.0 × 10-6 m² If the reaction is external mass transfer limiting and proceeds instantaneously, calculate the mass flux of A at the boundary. • If the reaction has the following rate law: -TAS = K+CAs and if k = 3.0 × 10-6 m³ 0-6 m², what will be the mass flux of A at the boundary?
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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note: this is about chemical
Transcribed Image Text:containing Cab = 1.25
1.25 mol
A spherical catalyst of radius d = 15 mm is used in a packed bed reactor. The fluid
of the reactant A, flows past the catalyst at a free-stream
velocity of u = 0.75. Fluid properties are given: diffusivity DAB = 2.5 X
10-11 m²
s
and the momentum diffusivity v = 1.0 x 10-6 m
• If the reaction is external mass transfer limiting and proceeds instantaneously,
calculate the mass flux of A at the boundary.
• If the reaction has the following rate law:
-TA's=k,.CAs and if k, = 3.0 × 10-6 m², what will be the mass flux of A at
the boundary?
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