440
Chapter 10
0,1
ra
0,01
0,001
100
10000
Figure
10.6
Double logarithmic plot of the influence of the stirring speed
N
(s'1) on the volumetric mass
transfer coefficient
kft.
(s'1). The aeration rate is
vg
= KT* m3 s'1. The line is the regression line for the
correlation in Eq. (1).
k,a
= 4.5 ■
10”5
N *'*
(
1
)
and
ksa
= 27.0v°323
(
2
)
From the correlation for the influence of the aeration rate, we find
/
, \ 0,523 / .
\ 0.523
k,a = 2 l J ? f
(4V
J
= 4.42«
and
kta
= 4.42«;
0.523
f N
(16.7
-4 .,0 .5 2 3 \r3.I46
= 6.3-10
«,
AT
(3)
(4)
1
10
100
vQ
(L min’1)
Figure 10.7. Double logarithmic plot of the influence of the aeration rate
vg
on the volumetric mass transfer
coefficient
kp.
The stirring speed is 16.7 s'1. The line is the regression line for the correlation in Eq. (2).
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