An Explicit Reaction Factor for General Second-Order Gas-Liquid Reactions
01 Jun 1995-Journal of Chemical Engineering of Japan (The Society of Chemical Engineers, Japan)-Vol. 28, Iss: 3, pp 346-348
TL;DR: In this article, the authors developed an explicit empirical relationship for the computation of the reaction factor for the common irreversible second-order reaction case, and the accuracy of the explicit expression has been thoroughly tested.
Abstract: The importance of the reaction (or enhancement) factor in the interpretation of kinetic data, and in the modeling of gas-liquid reactors, has provided the authors with an incentive to look for a mathematically explicit representation for the common irreversible second-order reaction case. The authors have developed an explicit empirical relationship for the computation of the reaction factor. The accuracy of the explicit expression has been thoroughly tested
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TL;DR: In this article, a generalized film model is used to describe isothermal reactive gas absorption without limitation on the reaction regime, and a computational analysis is performed in order to examine criteria given in the literature for the condition(s) under which the contribution of the bulk reaction can be significant.
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TL;DR: In this article, a relatively simple and explicit mathematical expression has been developed for estimating the enhancement factors for mass transfer accompanied by a second-order irreversible chemical reaction, based on asymptotic characteristics, i.e., limiting solutions.
Abstract: A relatively simple and explicit mathematical expression has been developed for estimating the enhancement factors for mass transfer accompanied by a second-order irreversible chemical reaction. The development is based on asymptotic characteristics, i.e., limiting solutions, for second-order enhancement factors. The resulting mathematical relation and other approximate analytical formulations previously presented in the literature have been critically compared with a numerical solution for the diffusion-reaction process based on film theory.
On a mis au point une expression mathematique relativement simple et explicite pour evaluer les facteurs de promotion d'un transfert de masse accompagne d'un reaction chimique irreversible et de second ordre. Ledit developpement est base sur des caracteristiques asymptotiques, c'est-a-dire des solutions limiteuses, pour les facteurs de promotion de second ordre. On a compare d'une maniere critique la relation mathematique qui en resulte, et d'autres formulations analytiques et approximatives anterieurement presentees dans la litterature, avec une solution numerique pour le procede de reaction et diffusion base sur la theorie des pellicules.
98 citations
TL;DR: In this article, a model for mass transfer in packed towers is proposed which considers local transfer conditions by taking into account the liquid residence time distribution function, which describes well physical and chemical absorption data, using parameters independent from the liquid flow rate.
27 citations
TL;DR: In this paper, the steady state behavior of a non-adiabatic gas-liquid CSTR is classified applying a second-order reaction model without any limitation on the reaction regime.
Abstract: Steady-state behavior of a non-adiabatic gas-liquid CSTR is classified applying a second-order reaction model without any limitation on the reaction regime. Uniqueness and multiplicity regions are determined in the parameter space of reactivity versus liquid residence time, with the ignition and extinction points explicitly shown. An isola with five steady states is found possible for the adiabatic reactor; however, even a small heat loss reduces the number of steady states to three.
14 citations