212314 Transport Characteristics of Modern Structured Packing Types for Absorption and Distillation Columns (Mellapak250Y, 350Y, 452Y, 500Y)
The work presents absorption transfer characteristics for modern and industrially often used structured packing types Mellapak250Y, 350Y, 452Y a 500Y. The characteristics were determined using the standard measuring methods (Rejl et. al., 2009). Liquid side volumetric mass transfer coefficient, kLa, were determined using an absorption system O2/air – water, in which the main mass transfer resistance is on the liquid side. Oxygen desorption from water into a stream of nitrogen were used (Linek et al., 1984). The kLa values were calculated from the readings of oxygen probes in liquid samples obtained from the ‘head' and ‘bottom' of a packing. Gas side volumetric mass transfer coefficient, kGa, were determined using an absorption system SO2 (0.03 vol. %) /air – 1 M NaOH solution. In this absorption system, the main resistance against mass transfer is on the gas side. For effective interfacial area measurement, chemical method using absorption of diluted CO2 from air (1 vol. %) into a NaOH solution of initial concentration 1 kmol/m3 were used. Characteristics were obtained in the flow range commonly used in the course of absorption operations, and of vacuum and atmospheric distillation operations. The kGa data for mentioned structured packing types have not been till this time published.
See more of this Group/Topical: Topical 8: The Dr. James Fair Heritage Distillation Symposium