CELL MODEL OF NONISOTHERMAL GAS-ABSORPTION IN GAS-LIQUID BUBBLY MEDIA

A model for combined mass and heat transfer during nonisothermal gas a bsorption in a two-phase gas-liquid bubbly medium with a high gas cont ent and/or large times of gas-liquid contact is suggested. Diffusion a nd thermal interactions between bubbles is taken into account in the a pproximation of a cellular model of a bubbly medium whereby a bubbly m edium is viewed as a periodic structure consisting of identical spheri cal cells with periodic boundary conditions at a cell boundary. Distri bution of concentration of dissolved gas, temperature distribution in liquid and coefficients of mass and heat transfer during nonisothermal absorption of a soluble pure gas from a bubble by liquid are determin ed. In the limiting case of absorption without heat release the derive d formulas recover the expressions for isothermal absorption.