Page 148 - Packed bed columns for absorption, desorption, rectification and direct heat transfer
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z
Ni in Figs. 18-20 is the number of drip points per m .
Because the experimental installation operates at condition of a total
reflux, the operating line coincides with the diagonal in the X-Y diagram, Fig.
9, Chapter 1.
The number of mass transfer units and the number of the theoretical
stages can be determined according to paragraph 1.5.4.2.3.
Physical properties of some test systems, largely used for experiments
in hot stand, are presented in Table 1 [86].
Table 1. Physical properties of some test systems largely used for experiments in hot stand
System P PG %xl0 s PL v £ xl0 8
2
mbar kg/m 3 H1 /S kg/m 3 m /s
2
Methanol/ethanol 1000 1.30 8.5 738 0.52
Ethanol/water 1000 1.29 8.4 791 0.50
Chlorobenzene/ethylbenzene 33 0.14 46,0 963 0.60
CMorobenzene/ethylbenzene 67 0.27 28.9 949 0.52
Chlorobenzene/ethylbenzene 133 0.51 15.9 926 0.54
Chlarobenzene/ethylbenzene 266 0J6 8.8 905 0.39
Chlorobenzene/ethylbenzene 532 1.8 4.9 886 0.34
Chlorobenzene/ethylbenzene 1000 3.28 2.9 866 0.30
Toluene/n-octane 100 0.35 20.8 839 0.52
Toluene/n-octane 133 0.46 16.4 833 0.49
Toluene/n-octane 266 0.90 8.5 763 0.43
Trans-/eis- Decahydronaphtalene 13 0.06 105.8 844 1.24
1,2 Diehloroethane/toluene 1000 3.22 2.9 924 0.38
Ethylbenzene/styrene 133 0.48 15.9 833 0.45
Nomenclature
- attenuation;
2
3
a- packing specific surface area, m /m ;