Page 204 - Packed bed columns for absorption, desorption, rectification and direct heat transfer

194

1/6
jr. (54)
1/6
a 8 Pi) \PG

is the liquid superficial velocity at the loading point.
The function y/ s is given by the equation:

f f \0.4 -2n,
g (ML) (55)
C 2 UJ

(56)

^L l£e_£0.4 n s=-0.326 from Table 6.
V

0,1588
Fo r ±L Bt n s= -ft723 C s2 = 0.695CJ&-

C ti is an experimental constant presented in Table 6, depending on the packing
type and dimension. L L and V are the liquid, respectively the gas, flow rate in
kg/h.
For determination of the flooding point Billet and Schultes [316]
proposed the equations:

Wr = (57)
,1/2
a \p G

H tF is the total holdup of the liquid phase at the flooding point The function
is calculated by the equation