Mass transfer with chemical reaction and longitudinal dispersion in two-phase continuous flow operations-1-

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  • Mass Transfer with Chemical Reaction Longitudinal Dispersion in Two-Phase Continuous-Flow Operations. I.

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The evaluations of the concentration distributions necessary for predicting the extents of chemical reaction and mass transfer and the length of the apparatus required for obtaining the desired completions of the chemical reaction and mass transfer are permitted by a general theoretical treatment, taken into consideration the effect of longitudinal dispersion of both fluids for two-phase continuous-flow systems accompanying general second order chemical reaction, mass transfer and longitudinal dispersion. The general solutions for the concentration distributions were numerically obtained by a digital computer. The effects of stage number in the finite difference equation, chemical reaction rate and residence time on the concentration distribution were shown by numerical calculations through Equations (11) to (13). The influence of chemical reaction rate on the concentration distribution is less as the resistance to mass transfer in phase with chemical reaction is less than that in the other phase without chemical reaction and for example, the reaction rate or the mass transfer rate in the phase with chemical reaction is higher. The concentration distribution can be estimated analytically in the case where the resistance to mass transfer in the phase without chemical reaction is controlling or the degree of longitudinal dispersion is very high.

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