38mm Metal Pall Rings for Efficient Distillation & Absorption
description1
Size (Inch/mm)
|
Bulk density (304,kg/m3) |
Number (per m3) |
Surface area (m2/m3) | Free volume(%) | Dry Packing Factor m-1 | |
| 1/4” | 6*6*0.3 | 900 | 4000000 | 904 | 88.6 | 1307.4 |
| 3/8” | 10*10*0.3 | 480 | 768000 | 482 | 93.8 | 583.8 |
| 1/2” | 13*13*0.3 | 420 | 410000 | 415 | 4.8 | 489.2 |
| 5/8” | 16*16*0.3 | 348 | 201000 | 344 | 95.5 | 393.2 |
| 1” | 25*25*0.4 | 288 | 53500 | 212 | 96.2 | 229.8 |
| 1” | 25*25*0.5 | 367 | 53500 | 216 | 95 | 237.2 |
| 1” | 25*25*0.6 | 439 | 53500 | 219 | 94.2 | 244.1 |
| 1.5” | 38*38*0.4 | 193 | 15180 | 143 | 97.2 | 148.4 |
| 1.5” | 38*38*0.5 | 246 | 15180 | 145 | 96.7 | 151.7 |
| 1.5” | 38*38*0.6 | 328 | 15000 | 146 | 95.9 | 154.6 |
| 2” | 50*50*0.5 | 185 | 6500 | 106 | 97.5 | 128.5 |
| 2” | 50*50*0.8 | 315 | 6500 | 108 | 96.8 | 130.5 |
| 2” | 50*50*1.0 | 380 | 6500 | 132.5 | 96 | 134 |
| 3” | 76*76*1.0 | 265 | 1920 | 69 | 97.4 | 79.6 |
| 3.5” | 89*89*1.0 | 224 | 1220 | 61 | 97.1 | 66.2 |
Application Cases of 38mm Metal Pall Rings
Petrochemical & Refining Industry
Case 1: Atmospheric & Vacuum Distillation Tower Revamp
Unit: Atmospheric tower & vacuum tower for separation of gasoline, kerosene and diesel oil
Packing: 38mm SS304 Metal Pall Ring, wall thickness 0.8mm
Original issue: Traditional ceramic Raschig rings caused high pressure drop, low separation efficiency and frequent clogging
Operation results:
Separation efficiency increased by 20–25%
Pressure drop reduced by over 40%, energy consumption cut down by 25%
Processing capacity raised by 15%, overall tower height decreased by 30%
Case 2: Quench Tower for Ethylene Cracking
Working condition: High temperature hydrocarbon gas (350–450°C), heavy component separation and coking tendency
Packing: 38mm SS321 Metal Pall Ring (high temperature resistant grade)
Operation results:
Separation efficiency of heavy components improved by 40%
Open structure effectively prevents coking; continuous service life extended to 18 months
Avoid unplanned shutdown caused by packing blockage
Case 3:Extraction Tower for Furfural Plant
Process: Furfural refining and solvent recovery
Packing: 38mm SS316L Metal Pall Ring, total loading volume: 68 m³
Operation results: Excellent resistance to furfural and aromatic solvent corrosion; service life over 10 years. Reusable after cleaning with low maintenance cost.
Case 4: Natural Gas Dehydration & Purification Tower
Working condition: High-pressure natural gas with hydrogen sulfide, for H₂S removal and deep dehydration
Packing: 38mm SS316L Metal Pall Ring
Operation Results:
H₂S removal efficiency over 98%
Dew point of treated natural gas below -40°C
Good sulfide corrosion resistance, service life more than 8 years
