Enhancement factors for gas‐absorption with second‐order irreversible chemical reaction

TLDR: 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.