Page 304 - Packed bed columns for absorption, desorption, rectification and direct heat transfer

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Table 29. Characteristics of the packings used in obtaining the experimental constants in
equations (202) and (203).
No Packing Material Free Specific Equlv, Height of Ref.
section surface diameter elements
E, tu /m area a, 4 m h, m
2
m /m 3
1 Raschig rings 25 Ceramic 0.64 228 0.0112 0.025 [140]
mm diameter
2 Raschig rings 50 Ceramic 0.72 112.5 0.0264 0.05 [140]
mm diameter
3 Raschig rings 80 Ceramic 0.73 79.5 0.0368 0.08 [140]
mm diameter
4 Raschig rings Ceramic 0.72 59.5 0.0484 0.1 [140]
100 mm
diameter
5 Tubes 50x100 Ceramic 0.7 112 0.0250 0.1 [140]
mm
6 Tubes 50x200 Ceramic 0.72 107 0.0269 0.2 [140]
mm*
7 Rectang. blocks Ceramic 0.69 91 0.0303 0.1 [140]
(h=100mm)*
e Honeycomb Ceramic 0.8 79 0.0405 0.1 [140]
blocks
(h=10Qmmf*
9 Honeycomb Ceramic O.S 75 0.0426 0.2 [140]
blocks
(h=200mm)**
10 Honeycomb Plastic 0J36 187 0.02 0.235 [97]
blocks*
11 Honeycomb Plastic 0.936 187 0.02 0.117 [97]
blocks
12 Honeycomb Plastic 0.936 187 0.02 0.058 [97]
blocks
13 Honeycomb Plastic 0.83 185.5 0.0179 0.031 [97]
blocks
Desorption of O 2 from water in air
Desorption of COj from water in air