Chemistry Reference
In-Depth Information
40
>1% O in A
35
Satisfactory
operation
30
O/A = 0.1
O/A = 1
O/A = 10
>1% A in O
25
0
5
10
15
20
25
Flow rate in arbitrary units
FIGURe 10.15
Operating curves for the same centrifugal contactor with an aqueous-
phase density of 1000 g/L, an organic-phase density of 810 g/L, and O/A flow ratios of
0.1 to 10.
40
>1% O in A
35
Satisfactory
operation
30
O/A = 0.1
O/A = 1
O/A = 10
>1% A in O
25
0
5
10
15
20
25
Flow rate in arbitrary units
FIGURe 10.16
Operating curves for the same centrifugal contactor with an aqueous-
phase density of 1000 g/L, an organic-phase density of 900 g/L, and O/A flow ratios of
0.1 to 10.
LW also had to be larger so that
r
LW*
/
r
U
was considerably greater than 0.46. This
condition decreased the volume per unit length in the separating zone, thus, allowing
L
/
D
R,i
to be considerably greater than the value of 2.2 mentioned earlier. The final
volume of the separating zone was about the same as would be attained if
r
LW*
/
r
U
was 0.46 and
L
/
D
R,i
was 2.2.
Inside the separating zone of the typical contactor rotor are four vertical vanes
that divide the rotor into four quadrants (see Figure 10.4). The vanes are formed by
