Absorption Hydraulic and Mass-Transfer Characteristics of Raschig Super-Pak 250

This paper refers on the hydraulic and mass-transfer characteristics of metal sheet Raschig Super-Pak 250 structured packing under absorption conditions. The pressure drop measurements were performed with air – water system. The mass-transfer characteristics were measured using standard absorption systems of oxygen desorption from water (k_La measurement), SO₂ chemisorption into the NaOH aqueous solution (k_Ga measurement) and CO₂ chemisorption into the NaOH aqueous solution (effective area, a, measurement). Measurements were performed with four elements of the packing with diameter of 0.29 m and total height of 0.84 m. The evaluated values of mass-transfer characteristics are compared with the ones calculated from the models designed for the prediction of the mass-transfer characteristics in corrugated sheet structured packings (Rocha, J. A.; Bravo, J. L.; Fair, J. R. Ind. Eng. Chem. Res. 1996, 35, 1660; Olujic, Z.; Kamerbeek, A. B.; Graauw, J. Chem. Eng. Process. 1999, 38, 683). The hydraulic (C_S, C_Fl, C_h and C_P,0) and mass-transfer (C_L and C_V) parameters of the Billet-Schultes model (Billet, R.; Schultes, M. Chem. Eng. Res. Des. 1999, 77, 498) obtained using the experimental data are presented.