V vasfi - Department of Polymer Engineering, Amirkabir University of Technology
b Hashemi Shahraki - Department of Gas Engineering, Petroleum University of Technology, Ahwaz Faculty of Petroleum University

The contacting of a gas with a liquid (fluid-fluid system) for the purpose of mass transfer of one or more components is very important operation in chemical engineering and industrial plants; often the mass transfer is followed by a chemical reaction. One or both of the phases are normally subdivided in such a contacting operation. The purpose of this phase subdivision is generally twofold. It increases the interfacial area and it produces relative motion between the phases. Both these effects contribute to an increase in overall mass transfer rate. Because of the great importance of this contacting operation this paper has been done to see which phase should be dispersed to achieve the best performance. The present paper is concerned with the different methods that are used in absorption process to enhance mass transfer between a gas phase and liquid phase. The removal of one or more selected components from a mixture of gases by absorption into a suitable liquid is the second major operation of chemical engineering that is based on interface mass transfer controlled largely by rates of diffusion.

Absorption, fluid-fluid mass transfer, operating condition, phase dispersion