Part 4 - Non-Stationary Interphase Mass Transfer with Chemical Reactions

Abstract

This chapter discusses the nonstationary physical absorption. This can be explained with the help of a graph that explains that two layers of fluids: a liquid layer of depth “h” and a gas layer of height “b”. The gas layer is an admixture of an inner component and the diffusing component. . In a one-dimensional co-ordinate system, the problem of the nonstationary two-phase diffusion may be formulated. The enhancement of gas admixture cleaning in laboratory scale is usually due to the use of chemical sorbent instead of pure water. The common approach for the creation of the model of such an absorption process is to apply the idea of two additive diffusion resistances located in both phases. The model usually calculates the augmentation coefficients in the liquid. The common approach in theoretical studies on chemosorption is to assume that the whole mass transfer resistance is located in the liquid phase. In this chapter, the simple case of a non-stationary two-phase absorption is discussed. The reaction is irreversible.