pL = Liquid density, kg/m3

Fp = Packing factor, m-1

^L = Viscosity of Liquid, mPa s

Y = Ratio, (density of water)/(density of liquid)

g = Gravitational constant, 9.81 m/s2

FIG. 5.20.3 Generalized correlation for the calculation of pressure drops in packed columns.

Using Figure 5.20.3, the engineer can then calculate the G value and hence the required column diameter.

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