Page 312 - Packed bed columns for absorption, desorption, rectification and direct heat transfer

298

where s is turbulizer pitch in m.
In obtaining Eq. (204), the dimensionless numbers are changed in the
following ranges; if- between 0.0291 and 0.141, Re G- between 1930 and
8980, h/d h -between 2.8 and 12.5, and sld h - between 0.120 and 0.725.
The comparison of the experimental data and equation (204) is
presented in Fig. 68,

<M 2.5

s" z
+10X
'sin
•

-I0Z

o.i
1.8 2 6 8 10
Re e.1O- 3

Fig. 6i. Fitting Eq, (204) to the experimenlal data for the packing with totalizers (Table 31),

3.2.2.2.2.1.3.2. Pressure drop and loading point of irrigated packings
To calculate Aoand AA, the following equations are proposed [153]:

44
\0.27
4 = 13. rl (h / d /* " (s/d ) (205)
h
h
and
029
3
9
Ls
M = 2.2x10* [w 1 /(g.d )] .(L .a/gf (s/d )- . (206)
h
h
The dimensionless numbers varied within the following limits: Rei -
2
4
1
from 10.8 to 1060, Fr L - from 1.67X10" to 3.05xl0" , [w f(gd h)]- from 17.7
3
2
4
to 77.5, (L afg)- from UlxlO" to 7.62xlO" , and [l.p L /(w o.p G)]- from
0.68 to 18.4. The mean error of Eq. (205) is 8.2% and of Eq, (206) - 12.6%.
The dimensionless parameters are defined as follows: