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Dynamics of Mobile Concentration Fronts in Gas–Liquid Reaction Systems: Analysis and Numerical Experiment
Theoretical Foundations of Chemical Engineering ( IF 0.8 ) Pub Date : 2020-05-10 , DOI: 10.1134/s0040579520020025
V. V. Dil’man , L. M. Musabekova , A. M. Brener , A. T. Kalbayeva , S. D. Kurakbayeva

Abstract

A mathematical model has been developed for the process of chemosorption with the moving front of an instantaneous irreversible reaction at small Reynolds numbers in a gas–liquid system before and after the reaction front formation moment. An analytical solution of this model has been found for the time period to the formation of a mobile chemosorption front with consideration for the effect of a reaction product on the dynamics of chemosorption. In contrast to the earlier known results, the model takes into account the effect of the diffusion transfer of a reaction product on the kinetic characteristics of chemosorption and different stages of the formation and motion of the concentration front. Some results of the processing and analysis of numerical experiment data are presented. The characteristic depths and times of the penetration of a captured component are plotted as functions of all the process-control parameters. Sherwood numbers and absorption acceleration and mass transfer coefficients are calculated for the captured component in the liquid phase.


中文翻译:

气液反应系统中移动浓度前沿的动力学:分析和数值实验

摘要

在反应前沿形成时刻之前和之后,在气液系统中,当雷诺数较小时,瞬时不可逆反应的移动前沿的化学吸附过程已经建立了数学模型。考虑到反应产物对化学吸附动力学的影响,在形成移动化学吸附前沿的时间段内已经找到了该模型的解析解。与较早的已知结果相反,该模型考虑了反应产物的扩散转移对化学吸附的动力学特征以及浓度前沿形成和运动的不同阶段的影响。给出了数值实验数据处理和分析的一些结果。将所捕获组分的特征深度和渗透时间绘制为所有过程控制参数的函数。计算液相中捕获组分的舍伍德数,吸收加速度和传质系数。
更新日期:2020-05-10
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