Mass transfer with chemical reaction during gas absorption on a sieve plate

On the basis of measurements of the rate of absorption of carbon dioxide into potassium carbonate—potassium bicarbonate buffer solutions, containing sodium hypochlorite and potassium chloride, and into sodium hydroxide solutions it has been proved that the Danckwerts' pseudo-first order reaction method may be successfully used for the determination of interfacial area and mass transfer coefficients on sieve plates. The values of interfacial area and mass transfer coefficient have been measured by this method for sieve plates of various geometry, at different gas velocities and clear liquid heads. It was found that the interfacial area per unit volume of the froth is almost independent of these parameters. A method of computation of the plate efficiency for absorption with reaction process has been suggested and tested experimentally. The results of investigations of the kinetics of the chemical reactions involved are also given.