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Separator Design 287

1.0ft

Figure 6.5 A horizontal gas-liquid separator.

Table 6.11 Summary of Equations - Sizing Horizontal Gas-Liquid
Separators__________________________________

Subscripts: L = liquid — V = vapor
V v' = 0.5v v A (6.11.1)

fp L '-Pv'Y /2
v v = 1.25 k v I ————— I (6.11.2)
I Pv' )

k v = 0.10 ft/s (0.0305 m/s) — with no mist eliminator (6.11.3)
k v = 0.35 ft/s (0.107 m/s) — with a mist eliminator

2
A = 7iD /4 — minimumD = 5.5 ft(1.67m) (6.11.4)
(6.11.5)
0.5LA = V L't s
7.5 <t s < lOmin (6.11.6)

Variables

Vy - A - ky - D - L - t s____________________________________________________
the mist eliminator from flooding because of a rising liquid level. We will design
for a liquid level at the center of the separator. These rules result in a minimum
diameter of 5.5 ft if the liquid level is at the center of the separator, as shown in

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