Raschig Super-Ring
Raschig Super-Ring Raschig Super-Ring
Pressure Drop, Pa/m packing 2500 2000 1500 1000 500 Hydraulic Performance of Raschig RSP-250wSE vs RSP-300woSE RSP-250 DP Dry RSP-300 DP Dry RSP-250 24.48 m3/m2h RSP-300 24.48 m3/m2h RSP-250 36.72 m3/m2h RSP-300 36.72 m3/m2h RSP-250 48.96 m3/m2h RSP-300 48.96 m3/m2h RSP-250 73.44 m3/m2h RSP-300 73.44 m3/m2h 0 0.00 1.00 2.00 3.00 4.00 5.00 F-factor (m/s) (kg/m 3 ) 0.5 Figure 2. Pressure drop per meter packed height comparison of Raschig Super-Pak RSP-250wSE vs. RSP-300woSE for select constant liquid rates. Column ID 0.43 m, Bed Height 3.05 m. Air/water tests at Separations Research Program, University of Texas at Austin, Austin, Texas. HETP, m Liquid Rate, gpm/ft 2 0.0 4.0 8.0 12.0 16.0 20.0 24.0 0.80 90 % System Limit 0.70 0.60 0.50 0.40 0.30 0.20 30.94 27.94 24.94 21.94 18.94 15.94 12.94 9.94 6.94 HETP, inches 0.10 3.94 0.0 10.0 20.0 30.0 40.0 50.0 60.0 Liquid Rate, m 3 /m 2 /h RSP-250 wSE - 0.333 bar [4.83 psia] RSP-300 woSE - 0.333 bar [4.83 psia] RSP-250 wSE - 1.655 bar [24.0 psia] RSP-300 woSE - 1.655 bar [24.0 psia] Figure 3. Effect of liquid rate and operating pressure on HETP of Raschig Super-Pak RSP-250wSE compared with RSP-300woSE at total reflux, 0.43 m I.D. SRP Column, 3.05 m Bed, C6/C7 System, High capacity drip tube distributor 8
HETP, m 0.00 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20 0.80 0.70 0.60 0.50 0.40 0.30 0.20 p = 1.03 - 1.65 bar Mellapak Tested in 1.22m F.R.I. Column Fs-Factor, ft/s(lb/ft 3 ) 0.5 90 % System Limit 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 30.94 27.94 24.94 21.94 18.94 15.94 12.94 RSP-250 wSE B1-250 [1.03 bar] M250.Y 1987 TDP (midbed 44-53%, 61-79%C6) Figure 4 Mass transfer efficiency (HETP) comparison at total reflux. Raschig Super-Pak RSP-250 wSE vs. Standard B1-250 [1.03 bar] and M250Y (FRI 1987) at 1.655 bar, 0.43 m I.D. SRP column, 3.05 m bed, C 6 /C 7 system, High capacity distributors. 9.94 6.94 HETP, inches HETP, m 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.00 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20 p = 1.03 - 1.65 bar Mellapak Tested in 1.22m F.R.I. Column Fs-Factor, ft/s(lb/ft 3 ) 0.5 90 % System Limit 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 30.94 27.94 24.94 21.94 18.94 15.94 12.94 9.94 6.94 HETP, inches RSP-250 wSE M252.Y VKG 6.7 mm (midbed 34-58%C6) RSP-300 woSE B1-250M [1.03 bar] Figure 5 Mass transfer efficiency (HETP) comparison at total reflux. Raschig Super-Pak RSP-250 wSE vs. RSP-300 woSE, High Capacity B1-250M [1.03 bar] and M252Y (FRI) at 1.655 bar, 0.43 m I.D. SRP column, 3.05 m bed, C 6 /C 7 system, High capacity distributors 9
- Page 1 and 2: REACHING NEW PERFORMANCE LEVELS WIT
- Page 3 and 4: consists of a regular sequence of s
- Page 5 and 6: For the lowest operating pressure o
- Page 7: Nomenclature C 6 C 7 Cyclohexane n-
- Page 11 and 12: 3.80 90% System Limit 3.00 Max. Use
- Page 13: DP/Stage, mbar Fs-Factor, ft/s(lb/f
HETP, m<br />
0.00 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20<br />
0.80<br />
0.70<br />
0.60<br />
0.50<br />
0.40<br />
0.30<br />
0.20<br />
p = 1.03 - 1.65 bar<br />
Mellapak Tested in<br />
1.22m F.R.I. Column<br />
Fs-Factor, ft/s(lb/ft 3 ) 0.5<br />
90 % System Limit<br />
0.10<br />
3.94<br />
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00<br />
Fs-Factor, Pa 0.5<br />
30.94<br />
27.94<br />
24.94<br />
21.94<br />
18.94<br />
15.94<br />
12.94<br />
RSP-250 wSE B1-250 [1.03 bar] M250.Y 1987 TDP (midbed 44-53%, 61-79%C6)<br />
Figure 4 Mass transfer efficiency (HETP) comparison at total reflux. <strong>Raschig</strong> <strong>Super</strong>-Pak<br />
RSP-250 wSE vs. Standard B1-250 [1.03 bar] and M250Y (FRI 1987) at 1.655 bar,<br />
0.43 m I.D. SRP column, 3.05 m bed, C 6 /C 7 system, High capacity distributors.<br />
9.94<br />
6.94<br />
HETP, inches<br />
HETP, m<br />
0.80<br />
0.70<br />
0.60<br />
0.50<br />
0.40<br />
0.30<br />
0.20<br />
0.00 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20<br />
p = 1.03 - 1.65 bar<br />
Mellapak Tested in<br />
1.22m F.R.I. Column<br />
Fs-Factor, ft/s(lb/ft 3 ) 0.5<br />
90 % System Limit<br />
0.10<br />
3.94<br />
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00<br />
Fs-Factor, Pa 0.5<br />
30.94<br />
27.94<br />
24.94<br />
21.94<br />
18.94<br />
15.94<br />
12.94<br />
9.94<br />
6.94<br />
HETP, inches<br />
RSP-250 wSE<br />
M252.Y VKG 6.7 mm (midbed 34-58%C6)<br />
RSP-300 woSE<br />
B1-250M [1.03 bar]<br />
Figure 5 Mass transfer efficiency (HETP) comparison at total reflux. <strong>Raschig</strong> <strong>Super</strong>-Pak<br />
RSP-250 wSE vs. RSP-300 woSE, High Capacity B1-250M [1.03 bar] and M252Y (FRI) at 1.655 bar,<br />
0.43 m I.D. SRP column, 3.05 m bed, C 6 /C 7 system, High capacity distributors<br />
9
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