Page 251 - Packed bed columns for absorption, desorption, rectification and direct heat transfer

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0,06

0,02

0.02 0.04 0.08
KJ.mh

Fig. 37. Comparison of the data for gas-side controlled mass transfer coefficient for the piston
+
flow model (KG) and for the diffusion model (Kg ) for the packings presented in Table 19.

Table 19. Packings used in Fig. 37
2
Packing a, m /m 3 <4_m Symbol
Raschig rings 10x10x1.5 mm 440 0.006
o
Raschig rings 15x15x2 mm 330 0.009 e
Raschig rinp 25x25x3 mm 200 0.015 <D
Raschig rings 35x35x4 mm 140 0.022 D
Raschig rings 50x50x5 mm 90 0.035 d
Pall rings 25x25x3 mm 220 0.014 D
Pall rings 35x35x4 mm 165 0.018 •
Pall rings 60x60x6 mm 96 0.033 B
Intalox Saddles 12.5 mm 625 0.005 A
Intalox Saddles 19 mm 335 0.008 V
Intalox Saddles 25 mm 225 0.012 •
Inialox Saddles 38 mm 195 0.017