MASS-TRANSFER DURING GAS-ABSORPTION FROM A LINEAR CLUSTER OF SLUGS INTHE PRESENCE OF INERT-GASES

A model of mass transfer during isothermal gas absorption in the prese nce of inert gas from a slug rising in a channel filled with liquid is suggested. The work studies the case of a small amount of soluble gas inside a slug and employs the approximation of a thin concentration b oundary layer. Theoretical results of mass transfer analysis for a sin gle gas slug are applied for determination of mass transfer rate in ga s liquid slug flow. In the assumption of a perfect mixing of the disso lved gas in liquid plugs, recurrent relations for the dissolved gas co ncentration in the n-th liquid plug and mass flux from the n-th gas sl ug are derived. The mass transfer coefficient in gas-liquid slug flow is determined. In the limiting case the derived formulas for mass tran sfer in the presence of inert admixtures recover the obtained expressi ons for mass transfer during absorption of a pure gas. Theoretical res ults are compared with available experimental data.