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Raschig Ring was developed by F. Raschig in 1914. It is the first invented with a fixed geometry bulk packing. Its shape is simple, and the height is equal to the diameter of the diameter. Widely used in adsorption, steaming and distilling performance, oil refinery, petrochemical industry, chemical industry and air pollution control etc., and also contracts anticorrosion engineering and environmental protection.
Specification:
| Size | D x H x T (mm) | Surface (M2/M3) | Free Vol(%) | Number (Pc/m3) | Weight (kg/m3) | Dry packing factor (m-1) |
| 16 | 16x16x0.4 | 338 | 0.94 | 216479 | 496 | 407 |
| 25 | 25x25x0.5 | 184 | 0.95 | 46262 | 355 | 215 |
| 38 | 38x38x0.6 | 128 | 0.96 | 14126 | 294 | 145 |
| 50 | 50x50x0.8 | 95 | 0.96 | 5933 | 296 | 107 |
| 76 | 76x76x1.0 | 66 | 0.97 | 1801 | 250 | 72 |
