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
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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, 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
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TL;DR: In this article, when a gaseous component is absorbed by a liquid under simultaneous reaction with a component of the liquid, the overall rate of reaction proves to be a dimensionless function of four limiting rates.
Abstract: When a gaseous component is absorbed by a liquid under simultaneous reaction with a component of the liquid, the overall rate of reaction proves to be a dimensionless function of four limiting rates:
a.the maximum rate of diffusion of the gaseous component through the liquid film
b.the maximum rate of diffusion of the liquid-component through the liquid film
c.the limiting rate of reaction within the liquid film (during diffusion)
d.the maximum rate of reaction within the main body of the liquid.
A graphical representation of the theoretical relationship enables one to predict the overall rates of interphase mass exchange under arbitrary conditions, as soon as reaction velocity coefficients and mass transfer coefficients are available.
213 citations
TL;DR: In this article, an approximate solution for absorption with irreversible second-order chemical reaction by the Danckwerts model is derived and discussed, which corresponds to the well known relation of van Krevelen and Hoftijzer for the film model.
Abstract: An approximate solution for absorption with irreversible second-order chemical reaction by the Danckwerts model is derived and discussed. This corresponds to the well known relation of van Krevelen and Hoftijzer for the film model. The derivation consists of developing a ‘bridging relation’ between concentrations of reactants and using this relation to obtain an explicit approximate expression for the enhancement factor. The resulting expression is more convenient than previous approximations, and it agrees as well or better with available numerical results. The method can be extended to other forms of chemical kinetics.
126 citations