Theory of Residence Time Distributions

Rodrigues, Alírio E.

doi:10.1007/978-94-011-8098-6_4

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2021

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Cited by 4 publications

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“…Zwietering derived an equation to compute this minimum value of J with the given RTD. The theory of maximum mixedness has been widely discussed in literature (Rodrigues, 1981;Nauman and Buffham, 1983;Tavare, 1986). As a key measure in this theory, the degree of mixing has also been widely discussed in mixing literature but it has mainly remained as a concept since no method is available to calculate its specific value for a general flow system.…”

Section: Introductionmentioning

confidence: 99%

A method for computing the degree of mixing in steady continuous flow systems

Liu¹

2011

Chemical Engineering Science

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Section: Introductionmentioning

confidence: 99%

A method for computing the degree of mixing in steady continuous flow systems

Liu¹

2011

Chemical Engineering Science

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Modelling of the synthetic dye Orange II degradation using Fenton’s reagent: From batch to continuous reactor operation

Ramírez

Duarte

Martins

et al. 2009

Chemical Engineering Journal

127

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Residence time distribution (RTD) revisited

Rodrigues

2021

Chemical Engineering Science

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100

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Residence Time Distribution (RTD) theory is revisited and tracer technology discussed. The background of RTD following Danckwerts ideas is presented by introducing “distribution” functions for residence time, internal age and intensity function and how to experimentally obtain them with tracer techniques (curves C and F of Danckwerts). Compartment models to describe fluid flow in real reactors are reviewed and progressive modeling of chromatographic processes discussed in some detail. The shortcomings of Standard Dispersion Model (SDM) are addressed, the Taylor-Aris model discussed and the Wave Model of Westerterp’s group introduced. The contribution of Computational Fluid Dynamics (CFD) is highlighted to calculate RTD from momentum and mass transport equations and to access spatial age distribution and degree of mixing. Finally smart RTD and future challenges are discussed.

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Theory of Residence Time Distributions

Cited by 4 publications

References 62 publications

A method for computing the degree of mixing in steady continuous flow systems

A method for computing the degree of mixing in steady continuous flow systems

Modelling of the synthetic dye Orange II degradation using Fenton’s reagent: From batch to continuous reactor operation

Residence time distribution (RTD) revisited

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