Page 341 - Applied Process Design For Chemical And Petrochemical Plants Volume II
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330 Applied Process Design for Chemical and Petrochemical Plants
Packing Capacity
The Efficient Capacity of the
packing in a non-foaming system
can be estimated as:
Efficient Capacity, C,, = C, [&]O’l* [&] -0.11
Flow Parameter, X
Nomenclature and
Definitions
L - Liquid mass rate
G - Gas mass rate u - Surface tension, dyne/cm ,u - Liquid viscosity, cp
pL - Liquid density
PO - Gas density
V - Superficial gas velocity, m/s or ft/s
x - LP parameter Norton routinely designs towers up
FIOW
G PL to 90% of Efficient Capacity. The limit
of 90% of Efficient Capacity leaves an
C, - v ,/T m/s or ftls estimated 11% turn-up before the
PL- PO packing loses its design efficiency.
Figure 9-55. Capaclty correlation for two types of Intarox@ shuctumd packing. Data range: 5 a u I 73 and 0.07 s p s 1 .l. Used by permission
of Norton Chemical Process Products Corp., Bull. ISP-2 (1994).
