Answered: A ﬂuidized coal reactor has been…

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 ﬂuidized coal reactor has been proposed for a new power plant. If the coal can be assumed to be spherical, reduce the general differential equation for mass transfer to obtain a speciﬁc differential equation for describing the steady-state diffusion of oxygen to the surface of the coal particle. Determine the Fick’s law relationship for the ﬂux of oxygen from the surrounding air environment if

a. only carbon monoxide, CO, is produced at the surface of the carbon particle;

b. only carbon dioxide, CO2, is produced at the surface of the carbon particle.

If the reaction at the surface of the carbon particle is instantenous, give two boundary conditions that might be used in solving the differential equation.

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