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Random Packing
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Random Packing Creates A Larger Surface Area for Gas-Liquid Contact

Random packing can be made of metal, plastic or ceramic materials. It is an efficient tower packing widely used in distillation, absorption and fractionation links in chemical plants and refineries. Random packing is divided into Raschig rings, Pall rings, saddle rings, mini rings and customized rings by structure, featuring low pressure drop, high flow rate and high mass transfer performance. We can offer random packing to satisfy your separation demands and working environments.

Random packing in different materials and structures are displayed.
Working Principle

Random packing is widely used in absorption towers, distillation towers, degasification towers and stripping towers, aiming to achieve gas-liquid mass transfer. The following is an example of the working principle of random packing in stripping towers.

Stripping is a process of recovering the solute absorbed from the fluid and separating liquid from solute. First, differing from the orderly distribution of structured packing, random packing is randomly distributed on the packed bed, strippant (gas) enters from the bottom and moves upward. Dirty water sprays downward from tray distributors. During the process, the solute molecules are transferred into gases through an endothermic process. Gases and liquids contact each other in a form of counter-flow in the tower. The irregular distribution of random packing increases the surface area and enhances the mass transfer between two fluids. The solute turns into gas and mixes with strippant. Droplets are removed through the mist eliminator at the top of the tower and flows out from the top of the tower. Clean liquid moves downward due to gravity and flows out at the bottom of the tower.

The working principle of random packing in gas towers
Specification
  • Material: metal (stainless steel, carbon steel or other alloy), plastic (PP, PE, PVDF, etc.), ceramic
  • Structure: Raschig ring, Pall ring, saddle ring, mini ring, etc.
Popular Types
2 Raschig rings are displayed.
Raschig ring Metal/plastic/ceramic
Detailed Specifications
Raschig ring
Raschig ring model interpretation
able 1: Popular Specifications of Raschig Ring
Model Size (D × T × H) (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage( %)
BD-M-RR-01 16 × 0.5 × 16 660 2480000 350 90
BD-M-RR-02 25 × 0.8 × 25 610 55000 220 93
BD-M-RR-03 50 × 1.0 × 50 430 7000 110 95
BD-M-RR-04 80 × 1.0 × 80 400 1820 60 96
BD-P-RR-05 25 × 1.0 × 25 88 48500 210 90
BD-P-RR-06 50 × 1.5 × 50 65 6500 105 92
BD-C-RR-07 6 × 2 × 6 750 3110000 789 73
BD-C-RR-08 10 × 2 × 10 700 720000 460 70
BD-C-RR-09 15 × 2 × 15 700 250000 350 70
BD-C-RR-10 25 × 2.5 × 25 600 49000 235 78
BD-C-RR-11 38 × 4 × 38 550 1200 178 75
BD-C-RR-12 50 × 5 × 50 530 6800 136 81
BD-C-RR-13 80 × 8 × 80 650 1930 108 680
BD-C-RR-14 100 × 10× 10 680 100 90 70
BD-C-RR-15 150 × 15 × 150 700 295 75 68
×
2 Pall rings are displayed.
Pall ring Metal/plastic/ceramic
Detailed Specifications
Pall ring
Pall ring model interpretation
Table 2: Popular Specifications of Pall Ring
Model Size (D×T×H) (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%)
BD-M-PR-01 16 × 0.3 × 16 360 201000 346 95.5
BD-M-PR-02 25 × 0.4 × 25 302 5100 212 96.2
BD-M-PR-03 25 × 0.5× 25 400 54000 216 95
BD-M-PR-04 25 × 0.6 × 25 461 5400 219 94.2
BD-M-PR-05 38 × 0.4 × 38 262 15180 145 96.7
BD-M-PR-06 38 × 0.6 × 38 328 15000 146 95.9
BD-M-PR-07 50 × 0.5 × 50 194 6500 106 97.5
BD-M-PR-08 50 × 0.7 × 50 285 6500 108 96.4
BD-M-PR-09 50 × 0.9 × 50 365 6500 109 95.4
BD-M-PR-10 76 × 0.8 × 76 205 183 69 97.4
BD-M-PR-11 90 × 1.0 × 90 229 1160 62 97.1
BD-P-PR-12 16 × 1 × 16 141 230000 260 91
BD-P-PR-13 25 × 1.2 × 25 85 48300 213 91
BD-P-PR-14 38 × 1.4× 38 82 15800 151 91
BD-P-PR-15 50 × 1.5 × 50 60 6300 100 92
BD-P-PR-16 76 × 2.6 × 76 62 1930 72 92
BD-C-PR-17 38 × 4 × 38 570 13400 150 75
BD-C-PR-18 50 × 5 × 50 550 6800 120 78
BD-C-PR-19 80 × 8 × 80 520 1950 75 80
×
2 saddle rings are displayed.
Saddle ring Metal/plastic/ceramic
Detailed Specifications
Saddle ring
Saddle ring model interpretation
Table 3: Popular Specifications of Saddle Ring
Model Size (D×T×H) (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-M-SR-01 16.5 × 0.25 × 10.6 223 324110 275 97.2 300.2
BD-M-SR-02 16.5 × 0.3 × 10.6 263 324110 275 96.7 304.9
BD-M-SR-03 25.9 × 0.25 × 12.6 163 127180 415 94.8 489.2
BD-M-SR-04 25.9 × 0.3 × 12.6 192 127180 344 95.5 393.2
BD-M-SR-05 25.9 × 0.4 × 12.6 266 127180 199 96.6 221
BD-M-SR-06 35.4 × 0.25 × 18.8 124 51180 151 98.4 158.3
BD-M-SR-07 35.4 ×0.3 × 18.8 146 51180 151 98.1 159.7
BD-M-SR-08 35.4 × 0.4 × 18.8 203 51180 151 97.4 163.2
BD-M-SR-09 48.5 × 0.3 × 28.6 95 15550 97 98.8 101
BD-M-SR-10 48.5 × 0.4 × 28.6 132 15550 97 98.3 102.5
BD-M-SR-11 48.5 × 0.5 × 28.6 169 15550 97 97.9 103.9
BD-M-SR-12 67 × 0.4 × 37 113 9000 84 98.6 87.3
BD-M-SR-13 67 × 0.5 × 37 145 9000 84 98.2 88.4
BD-M-SR-14 76.5 × 0.4 × 42.5 83 4690 61 99 62.9
BD-M-SR-15 76.5 × 0.5 × 42.5 106 4690 61 98.7 63.5
BD-P-SR-16 25 × 1.2 × 13 102 97680 288 85 467
BD-P-SR-17 38 × 1.2 × 19 91 25200 264 95 309
BD-P-SR-18 50 × 1.5 × 25 75 9400 250 96 282
BD-P-SR-19 76 × 3 × 38 59 3700 200 97 220
BD-C-SR-20 16 × 2 × 12 710 382000 450 70 1311
BD-C-SR-21 25 × 3 × 19 610 84000 250 74 617
BD-C-SR-22 38 × 4 × 30 590 25000 164 75 389
BD-C-SR-23 50 × 5 × 40 560 9300 142 76 323
BD-C-SR-24 76 × 9 × 57 520 1800 91 78 194
×
3 cascade mini rings are displayed.
Cascade mini ring Metal/plastic/ceramic
Detailed Specifications
Cascade mini ring
Cascade mini ring model interpretation
Table 4: Popular Specifications of Cascade Mini Ring
Model Size (D×T×H) (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-M-CMR-01 25 × 0.5 ×12.5 383 98120 221 95 257
BD-M-CMR-02 38 × 0.6 × 19 325 30040 153 96 173
BD-M-CMR-03 50 × 0.8 × 25 308 12340 109 96 123
BD-M-CMR-04 76 × 1.2 × 38 306 3540 72 96 81
BD-P-CMR-05 25 × 1.2 × 13 98 81500 228 90 313
BD-P-CMR-06 38 × 1.4 × 19 58 27200 133 93 176
BD-P-CMR-07 50 × 1.5 × 25 55 10740 114 94 143
BD-P-CMR-08 76 × 3 × 38 698 3420 90 93 112
BD-C-CMR-09 25 × 3 × 15 650 72000 210 73 540
BD-C-CMR-10 38 × 4 × 23 630 21600 153 74 378
BD-C-CMR-11 50 × 5 × 30 580 9100 102 76 232
BD-C-CMR-12 76 × 9 × 46 530 2500 75 78 158
×
2 metal super mini rings are displayed.
Super mini ring Metal/plastic/ceramic
Detailed Specifications
Super mini ring
Super mini ring model interpretation
Table 5: Popular Specifications of Super Mini Ring
Model Size (D×T×H) (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-M-SMR-01 16 × 0.5 × 5.5 604 630000 348 92 312
BD-M-SMR-02 25 × 0.6 × 9 506 160000 228 94 280
BD-M-SMR-03 38 × 0.7 × 12.7 390 48000 150 95 175
BD-M-SMR-04 50 × 0.8 × 17 275 21500 115 97 156
BD-P-SMR-05 38 × 1.2 × 12 70 46000 145 92 186
BD-P-SMR-06 50 × 1.5 × 17 67 21500 128 93 159
BD-P-SMR-07 76 × 2.5 × 26 58 6500 116 93 144
BD-C-SMR-08 16 × 1.5 × 10 750 300500 250 87 1150
BD-C-SMR-09 25 × 2.0 × 16 700 87040 180 85 800
BD-C-SMR-10 30 × 2.5 × 18 690 55000 170 85 850
BD-C-SMR-11 38 × 3.5 × 23 720 27600 140 85 905
BD-C-SMR-12 50 × 4.5 × 30 650 10100 110 84 880
×
4 metal super Raschig rings are displayed.
Super Raschig ring Metal only
Detailed Specifications
Super Raschig ring
Super Raschig ring model interpretation
Table 6: Popular Specifications of Super Raschig Ring
Model Size (inch) Bulk Density 304(kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-M-SRR-01 0.3 230 180000 315 97.1 343.9
BD-M-SRR-02 0.5 275 145000 250 96.5 278
BD-M-SRR-03 0.6 310 145000 215 96.1 393.2
BD-M-SRR-04 0.7 240 45500 180 97 242.2
BD-M-SRR-05 1 220 32000 150 97.2 163.3
BD-M-SRR-06 1.5 170 13100 120 97.8 128
BD-M-SRR-07 2 165 9500 100 97.9 106.5
BD-M-SRR-08 3 150 4300 80 98.1 84.7
BD-M-SRR-09 3.5 150 3600 67 98.1 71
×
A metal VSP ring is displayed.
VSP ring Metal only
Detailed Specifications
VSP ring
VSP ring model interpretation
Table 7: Popular Specifications of Metal VSP Ring
Model Size (D×T×H) (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-M-VSPR-01 25 × 0.6 × 25 420 59200 250 93 310
BD-M-VSPR-02 38 × 0.6 × 38 396 14000 138 94.7 163
BD-M-VSPR-03 50 × 0.8 × 50 350 7000 121 95 144
BD-M-VSPR-04 76 × 1.0 × 76 280 1950 75 95 86
×
5 Dixon rings are displayed.
Dixon ring Metal only
Detailed Specifications
Dixon ring
Dixon ring model interpretation
Table 8: Popular Specification of Dixon Ring
Model Specs (mm) Mesh Size (mesh) Tower Diameter Theoretical Plate (pcs/m) Bulk Density (kg/m3) Surface Area (m2/m3) Voidage (%) Pressure Drop (mbar/m)
BD-M-DR-01 2 × 2 100 10–35 60–65 670 3700 91 30
BD-M-DR-02 3 × 3 100 20–50 50–55 520 2800 93 15
BD-M-DR-03 4 × 4 100 20–70 30–32 380 1700 95 10
BD-M-DR-04 5 × 5 100 20–100 15–20 295 1100 95 10
BD-M-DR-05 6 × 6 80 20–150 12–15 280 950 95 10
BD-M-DR-06 7 × 7 80 20–200 14–17 265 800 95 8
BD-M-DR-07 8 × 8 80 20–250 12–20 235 750 95 8
BD-M-DR-08 10 × 10 80 20–300 7–8 200 550 95 8
×
2 plastic polyhedral hollow balls are displayed.
Polyhedral hollow ball Plastic only
Detailed Specifications
Polyhedral hollow ball
Polyhedral hollow ball model interpretation
Table 9: Popular Specifications of Plastic Polyhedral Hollow Ball
Model Size (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-P-PHB-01 25 64 64000 460 90 776
BD-P-PHB-02 38 72.5 25000 325 91 494
BD-P-PHB-03 50 52 11500 237 91 324
BD-P-PHB-04 76 75 3000 214 92 193
BD-P-PHB-05 100 56 1500 330 92 155
×
2 plastic Tri-Packs are displayed.
Tri-Pack Plastic only
Detailed Specifications
Tri-Pack
Tri-Pack model interpretation
Table 10: Popular Specifications of Plastic Tri-Pack
Model Size (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-P-TPR-01 25 81 81200 85 90 28
BD-P-TPR-02 32 70 25000 70 92 25
BD-P-TPR-03 50 62 11500 48 93 16
BD-P-TPR-04 95 45 1800 38 95 12
×
2 plastic pentagon rings are displayed.
Pentagon ring Plastic only
Detailed Specifications
Pentagon ring
Pentagon ring model interpretation
Table 11: Popular Specifications of Plastic Pentagon Ring
Model Size (D×T×H) (mm) Bulk Density (kg/m3) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-P-PR-01 38 × 12 × 1.2 112 46000 246 95 260.3
BD-P-PR-02 50 × 17 × 1.5 107 21500 218 97 225.2
BD-P-PR-03 76 × 26 × 2.5 92 6500 198 96 207.1
×
Various plastic and ceramic super saddle rings are displayed.
Super saddle ring Plastic/ceramic
Detailed Specifications
Super saddle ring
Supper saddle ring model interpretation
Table 12: Popular Specifications of Supper Saddle Ring
Model Size (D×T×H) (mm) Bulk Quantity (pcs/m3) Surface Area (m2/m3) Voidage (%) Packing Factor (m-1)
BD-P-SSR-01 25 × 1.2 × 20 56000 238 85 340
BD-P-SSR-02 38 × 1.2 × 19 25200 178 75 201
BD-P-SSR-03 50 × 1.5 × 25 9400 168 68 184
BD-P-SSR-04 76 × 3 × 38 3700 130 52 138
BD-C-SSR-05 25 × 3 × 20 76600 190 78 340
BD-C-SSR-06 38 × 4 × 30 24600 131 84 190
BD-C-SSR-07 50 × 6 × 42 7344 88.4 81 166
BD-C-SSR-08 76 × 9 × 53 1976 58.5 77 127
×
Features
  • Multiple materials are available to suit to different environments.
  • Multiple types for different packed towers
  • High flux and low pressure drop
  • High temperature resistance and good chemical stability
  • High mass transfer performance
  • High efficiency and low resistance
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