Raschig Super-Ring

Fs-Factor, ft/s(lb/ft 3 ) 0.5
0.00 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20
0.80
0.70
p = 0.33 bar
90 % System Limit
30.94
27.94
HETP, m
0.60
0.50
0.40
0.30
0.20
Mellapak Tested in
1.22m F.R.I. Column
24.94
21.94
18.94
15.94
12.94
9.94
6.94
HETP, inches
0.10
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
Fs-Factor, Pa 0.5
RSP-250 wSE M250.Y 1987 TDP (midbed 40-96%, 90-96%C6) B1-250
Figure 6 Mass transfer efficiency (HETP) comparison at total reflux. Raschig Super-Pak
RSP-250 wSE vs. Standard B1-250 and M250Y (FRI 1987) at 0.333 bar,
0.43 m I.D. SRP column, 3.05 m bed, C 6 /C 7 system, High capacity distributors
3.94
Fs-Factor, ft/s(lb/ft 3 ) 0.5
0.00 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20
0.80
p = 0.33 bar
90 % System Limit
0.70
30.94
27.94
HETP, m
0.60
0.50
0.40
0.30
0.20
Mellapak Tested in
1.22m F.R.I. Column
0.10
3.94
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
Fs-Factor, Pa 0.5
24.94
21.94
18.94
15.94
12.94
9.94
6.94
HETP, inches
RSP-250 wSE RSP-300 woSE M252.Y VKG 5.3 mm (midbed 45-52%C6) B1-250M
Figure 7. Mass transfer efficiency (HETP) comparison at total reflux. Raschig Super-Pak
RSP-250 wSE vs. RSP-300 woSE, High Capacity B1-250M and M252Y (FRI) at 0.333 bar,
0.43 m I.D. SRP column, 3.05 m bed, C 6 /C 7 system, High capacity distributors.
10