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Separator Design 349

Mass Balance

Yik = Y2k' + (nip' / ms) (x lk' - ) (6.3 1 .2)
x 2k
x 2k = (l- e')x, k ' (6.32.3)

Operating Solvent Flow Rate

ny/ms = C' (m F'/m SM) (6.32.4)

Number of Equilibrium Stages

Ne
(l/A E) = ———————— (1 - A E) + A E (6.32.5)

Extractor Height

Z E = N e (HETS) + D (6.32.6)

Extractor Diameter

A = [ (m F' / p F ') + (rag / p s') ] / JT (6.32.7)

2
A = D /4 (6.32.8)
n
(HETS) ( D V' 38
———— =1 —— I (6.32.9)

System Properties

K k =f(T') (6.32.10)
J T = f(co', extractor geometry) — Table 6.31 (6.32.11)

17 3
HETS / D , f (interfacial tension') — Figure 6.23 (6.32.12)

A E = (m F '/m s )/K k (6.32.13)
Variables
m SM - K k - y 2k - x 2k - m SM - m s - Z - N e - HETS - D - J T - A - A E

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