Part 3 - Chemically Reacting Gas-Liquid Systems

Abstract

The interphase mass transfer of a particular substance between a gas and a liquid complicated with a chemical reaction in the liquid phase is strongly affected by the rate of chemical transformations. In this case, the interphase mass transfer process is a result of the balance between convective and diffusion transports in both phases. The macrokinetics of the chemical transformations in gas-liquid systems is determined by the interphase mass transfer rate between both phases taking into consideration the reaction rate in the liquid. Taking into account that the initial concentration of the absorbed substances in the liquid is always zero, the driving force of the mass transfer depends on the initial concentration gradient in the gas phase. The results obtained show that the chemical reactions in the liquid phase increase the overall mass transfer rate. The increase depends on the chemical reaction rate. At very slow reactions, the mass transfer in the liquid limits the interphase mass transfer rate. The effect of the high concentration gradients on the physical parameters of the hydrodynamics, the heat, and the mass transfer can be explain on the bases of falling liquid film.