Packing data Berl saddles, ceramic

Sater and Levenspiel43 studied an air-water system in a 10.16-cm-i.d. glass column packed with either 1.27-cm ceramic Berl saddles or 1.27-cm Raschig rings to a height of 3.66 m. Iodine-131 was used as liquid-phase tracer. The dynamic liquid holdup data obtained under trickle-flow conditions correlated well with the above Eq. (8-3) of Otake and Okada.38... 

The same goes for the comparison between the calculated values and the new experimental data presented by Pilhofer [18] for 15 mm ceramic Berl saddles, see Table 7-6. In the case of systems with the ratio dh/dy > 1, the prediction of the maximum capacity of the packing by means of Eq. (7-21) is very accurate. Table 7-6, point 4, shows that the droplet size occurring in the system toluol (D)/water corresponds to the size of the free channels dh. Hence, the droplet fall in the packing is marked by a strong decelerating effect, which means that the experimental values (ud + uc)max. clearly fall below the values (uD+uc)cal calculated acc. to Eq. (7-21). 

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