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Journal ArticleDOI

Closed‐form Solutions for the Performance of Gas‐Liquid CSTRs with Second‐order Reactions

TL;DR: Mise en place d'une equation analytique permettant de predire les performances and la cinetique du reacteur du titre dans le cas d'un reaction irreversible d'ordre 2 as discussed by the authors.
Abstract: Mise en place d'une equation analytique permettant de predire les performances et la cinetique du reacteur du titre dans le cas d'une reaction irreversible d'ordre 2
Citations
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Journal ArticleDOI
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

3 citations

Journal ArticleDOI
TL;DR: In this article, the authors examined the feasibility of using explicit, approximate factors in modelling and predicting the steady-state behaviour of nonisothermal gas-liquid continuous-stirred tank reactors (CSTRs).
Abstract: It is the purpose of the investigation to examine in detail the feasibility of using explicit, approximate factors in modelling and predicting the steady-state behaviour of nonisothermal gas-liquid continuous-stirred tank reactors (CSTRs). The principal objective is to investigate whether uniqueness and multiplicity of steady states in an industrially important gas-liquid reacting system can be adequately described by models based on explicit enhancement factors
References
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Journal ArticleDOI
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

Book ChapterDOI
01 Jan 1983
TL;DR: A comprehensive survey of gas-liquid reaction analysis can be found in this paper, with a focus on the difficulties associated with the analysis of gas liquid reactions in the context of the interpretation of the reaction performance.
Abstract: That reactions between gases and liquids are important in chemical engineering can be judged from the vast literature on this subject. Almost all of the published work up to 1970 has been thoroughly reviewed, drawn together and elegantly summarised in the very comprehensive “Gas-Liquid Reactions” by Danckwerts (1). Since 1970 a number of associated surveys and monographs have been produced, notably those of Juvekar and Sharma (2), Barona (3) and Charpentier (4). This present survey is an attempt to draw attention to the difficulties associated with the analysis of gas-liquid reactions in the context of the interpretation of gas-liquid reactor performance. It is restricted to consideration of reactors which do not involve volatile intermediates or products and those which do not involve a third solid phase. The subject of desorption with reaction has been thoroughly dealt with by Shah and Sharma (5) and a definitive account of gas-liquid-solid reactors has been undertaken by Shah (6).

4 citations

Journal ArticleDOI
TL;DR: The prediction of the reactant concentration in each stage and hence the conversion depended on a search procedure initiated along a straight line representing the mass balance equation at the given stage and drawn from the known feed stage located on the abscissa in a E-IU diagram for the given system.

1 citations