Fig. 11 Experimental molar fraction profiles obtained by SMB, at cyclic steady state: (a) internal
profile as a function of column number and sample collected at the middle of the switching time
(26th cycle), (b) extract (18th cycle), and (c) raffinate (21st cycle) composition as a function of a
switching time. Points correspond to experimental data and lines represent the simulation results
Table 13 Transport
parameters
Parameter
Values
U, WÁm
À2
ÁK
À1
20
h w , WÁm
À2
ÁK
À1
40
h f , WÁm
À2
ÁK
À1
128
λ, WÁm
À1
ÁK
À1
0.3763
k f , mÁs
À1
2 Â 10
À02
D ax , m
2
Ás
À1
7.95 Â 10
À05
Cpw, JÁkg
À1
ÁK
À1
500
Cps, JÁkg
À1
ÁK
À1
920
D cA , m
2
Ás
À1
C 3 H 8 : 2.9 Â 10
À11
C 3 H 6 : 9.6 Â 10
À12
i-C 4 H 10 : 3.7 Â 10
À12
D cB , m
2
Ás
À1
C 3 H 8 : 5.9 Â 10
À11
C 3 H 6 : 6.0 Â 10
À11
i-C 4 H 10 : 1.5 Â 10
À11
Perspectives of Scaling Up the Use of Zeolites for Selective Separations from. . .
183