Ladder ring is a the mass transfer companies in the UK to develop a new kind of open-celled filler. Its height of about half the diameter of one side has a conical flanging, the ring wall there fenestrae, and a curved blade toward the ring center. Since the height is reduced, and the special structure of the cone flanging, will not only improve the gas-liquid distribution within the packing layer, and increase the gas-liquid contact point, is conducive to the liquid constantly updated convergence dispersed and membrane surface, have been strengthened so that the mass transfer, separation efficiency is greatly improved. The general ladder ring packing more Pall ring packing flux can be increased by 10-20%, the pressure reduced by 30-40% separation efficiency, as the technology has improved to varying degrees. So far, ladder ring filler tower over the world there are more than 1000 applications in the absorption, steaming and distillation operations. Depending on the circumstances, the ladder ring can represent Raschig rings, Pall rings, blister board, floating valve plate and sieve to achieve efficient and productive as well as energy-saving purposes.

Size |
Thickness (mm) |
Dimension (mm) |
Number per m3 |
Bulk density (kg/m3) |
Surface area (m2/m3) |
Free volume (%) |
0P |
0.25 |
Ф17×6 |
530000 |
347 |
420 |
96 |
1P |
0.3 |
Ф25×8 |
150000 |
247 |
238 |
96.9 |
1.5P |
0.35 |
Ф34×11 |
61000 |
208 |
164 |
97.4 |
2P |
0.35 |
Ф43×14 |
33000 |
203 |
160 |
97.5 |
2.5P |
0.4 |
Ф51×17 |
15700 |
159 |
105 |
98 |
3P |
0.4 |
Ф66×21 |
10140 |
165 |
108 |
97.9 |
4P |
0.4 |
Ф86×28 |
4310 |
120 |
78 |
98.5 | |