The conversion of a second-order reaction in a tubular reactor with axial dispersion, can be overestimated by

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The conversion of a second-order reaction in a tubular reactor with axial dispersion,Dea dC dx dC dx v- - KC = 0

can be overestimated by replacing the second-order reaction by a first-order reaction using the maximal concentration in the reactor,dC dx Dea - V dC dx - KCINC = 0,

where CIN is the inlet concentration. A better approximation is obtained if CIN is replaced by the average concentration, calculated from the solution of the first simple approximation with CIN . Using the average concentration will underestimate the conversion in the first part of the reactor by giving a reaction rate at the inlet that is too low and consequently overestimating the reaction rate in the rear part.

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Mathematical Modeling In Chemical Engineering

ISBN: 9781107049697

1st Edition

Authors: Anders Rasmuson, Bengt Andersson, Louise Olsson, Ronnie Andersson

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