Desorbent Consumption (m
3
STP,desorbent /kg A or B ):
DC R ¼
Q D
y A
R
Q R P= RT
À
Á
M
A
ð44Þ
DC X
Q D
y B
X
Q X P= RT
À
Á
M
B
ð45Þ
Productivity (kg A or B /(hÁm
3
adsorbent )
Prod R ¼
y A
R
Q R P= RT
À
Á
M
A
V S
ð46Þ
Prod X ¼
y B
X
Q X P= RT
À
Á
M
B
V S
ð47Þ
Martins et al. validated the SMB model with experimental data obtained in
several experiments; however, the best cycle was performed using zeolite 13X/iC 4 H 10 as adsorbent/desorbent pair, a 4-2-2 configuration in open loop at 423 K,
150 kPa, and switching time of 80 s. The experimental conditions are presented in
Table 11.
The performance parameters obtained for the experiment are presented in
Table 12.
This experiment presents the best performance results in terms of propylene
purity at the extract stream (Pu X ¼ 99.9%), recovery, (Rec X ¼ 99.5%), productivity
Table 11 Experimental conditions of the SMB cycles performed using iC 4 H 10 as desorbent, with a
4-2-2 column configuration at 423 K and 150 kPa
Switching time, s
Q F , SLPM
Q D , SLPM
Q X , SLPM
Q R , SLPM
80
0.03 C 3 H 8 (y C3H8 ¼ 0.19)
0.14 C 3 H 6 (y C3H6 ¼ 0.81)
1.31
1.01
0.45
Table 12 Performance parameters of the SMB experiment
Run
C 3 H 6
C 3 H 8
Pu X ,%
Rec X ,%
DC X ,
a
Prod X ,
b
Pu R ,%
Rec R ,%
DC R ,
a
Prod R ,
b
Exp
99.9
99.5
0.8
2.9
98.1
99.7
1.3
0.7
Sim
100.0
100.0
–
2.5
100.0
100.0
–
0.5
a m
3
STP,iC4H10 kg
À1
C3
b mol C3 h
À1 kg
À1
adsorbent
Perspectives of Scaling Up the Use of Zeolites for Selective Separations from. . .
181
3
STP,desorbent /kg A or B ):
DC R ¼
Q D
y A
R
Q R P= RT
À
Á
M
A
ð44Þ
DC X
Q D
y B
X
Q X P= RT
À
Á
M
B
ð45Þ
Productivity (kg A or B /(hÁm
3
adsorbent )
Prod R ¼
y A
R
Q R P= RT
À
Á
M
A
V S
ð46Þ
Prod X ¼
y B
X
Q X P= RT
À
Á
M
B
V S
ð47Þ
Martins et al. validated the SMB model with experimental data obtained in
several experiments; however, the best cycle was performed using zeolite 13X/iC 4 H 10 as adsorbent/desorbent pair, a 4-2-2 configuration in open loop at 423 K,
150 kPa, and switching time of 80 s. The experimental conditions are presented in
Table 11.
The performance parameters obtained for the experiment are presented in
Table 12.
This experiment presents the best performance results in terms of propylene
purity at the extract stream (Pu X ¼ 99.9%), recovery, (Rec X ¼ 99.5%), productivity
Table 11 Experimental conditions of the SMB cycles performed using iC 4 H 10 as desorbent, with a
4-2-2 column configuration at 423 K and 150 kPa
Switching time, s
Q F , SLPM
Q D , SLPM
Q X , SLPM
Q R , SLPM
80
0.03 C 3 H 8 (y C3H8 ¼ 0.19)
0.14 C 3 H 6 (y C3H6 ¼ 0.81)
1.31
1.01
0.45
Table 12 Performance parameters of the SMB experiment
Run
C 3 H 6
C 3 H 8
Pu X ,%
Rec X ,%
DC X ,
a
Prod X ,
b
Pu R ,%
Rec R ,%
DC R ,
a
Prod R ,
b
Exp
99.9
99.5
0.8
2.9
98.1
99.7
1.3
0.7
Sim
100.0
100.0
–
2.5
100.0
100.0
–
0.5
a m
3
STP,iC4H10 kg
À1
C3
b mol C3 h
À1 kg
À1
adsorbent
Perspectives of Scaling Up the Use of Zeolites for Selective Separations from. . .
181