Page 27 - Separation process engineering

k , k xD
x,c
individual mass transfer coefficients in continuous and dispersed phases,
3
3
kg/(s·m ) or kmol/(s·m )
k , k
LD LC
individual mass transfer coefficients in continuous and dispersed phases with
driving force in concentration units, m/s

k , k V
L
individual liquid and vapor mass transfer coefficients in distillation, Eq. (16-
108), m/s
k

mass transfer coefficient in Maxwell-Stefan analysis, /Δz, m/s

K d
y/x, distribution coefficient for dilute extraction

K, K i

y/x, equilibrium vapor-liquid ratio
i i
K drum

parameter to calculate u perm for flash drums, Eq. (2-64)
K , K y
x
2
overall mass transfer coefficient in liquid or vapor, lbmol/ft h, or kmol/h·m 2
K LD

overall mass transfer coefficient in extraction based on dispersed phase in
concentration units, Eq. (16-80b analog), m/s

K O-ED
overall mass transfer coefficient in extraction based on dispersed phase, Eq.
3
3
(16-80a), kg/(s·m ) or kmol/(s·m )
l w

weir length, ft

L
length, m

L
liquid flow rate, kmol/h or lbmol/h

mass liquid flow rate, lb/h (Chapter 15)

L′
2
liquid flux, lb/(s)(ft )
L
g
liquid flow rate in gal/min, Chapter 10

m