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Absorption of acid gases, H2 S and CO2 , by methyl diethanol amine in a structured packed column equipped with Montz-Pak A3-500 was mathematically modeled. The dimensions of the channels as well as their number and liquid film flow model are similar to the Shilkin's work. Heat and mass transfer equations are derived for reacting liquid film and gas flowing counter currently into the column. Concentration distribution is calculated across the moving liquid film and no zone with equilibrium concentration conditions is considered in the reacting liquid. The results of the model for the structured column show a better performance for H2 S absorption compared with a tray column operating in the same conditions. The results obtained by the model indicate appreciable distribution of concentration and temperature along the column.

Comparison of Separation Performance of a Structured Packed Column with a Tray-Type Column for H2S and CO2

Comparison of Separation Performance of a Structured Packed Column with a Tray-Type Column for H₂S and CO₂